Fix player joins resetting the server timestep.

Fix a desync in GpsDot.IsTargetableBy.
World.ShroudExplores depends on RenderPlayer, which makes it completely bogus for this purpose.
2016-10-19 21:05:37 +02:00 · 2016-10-19 19:16:41 +02:00 · 2016-10-15 15:57:28 +01:00 · 2016-10-15 12:02:12 +02:00 · 2016-10-14 19:00:58 +02:00 · 2016-10-14 19:00:46 +02:00
2782 changed files with 62984 additions and 183740 deletions
--- a/.editorconfig
+++ b/.editorconfig
@@ -4,7 +4,6 @@ root = true
 ; Unix-style newlines
 [*]
 end_of_line = LF
-insert_final_newline = true

 ; 4-column tab indentation
 [*.cs]
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,10 +1,12 @@
 # Enforce LF normalization on Windows
 *.yaml eol=lf
 *.lua eol=lf
-*.cs eol=lf
-*.csproj eol=lf
-*.sln eol=lf
 * text=lf

 # Custom for Visual Studio
 *.cs     diff=csharp
+*.sln    merge=union
+*.csproj merge=union
+*.vbproj merge=union
+*.fsproj merge=union
+*.dbproj merge=union
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -1,39 +0,0 @@
-<!--
-  This is a guideline, which shall help to write enhancement requests or bug reports.
-  Fill in the placeholders below. Delete any headings and placeholders that you do not use.
-
-  Before you start check if a similar request/bug report already exists in this Github issue tracker and comment there.
-
-When submitting a feature or enhancement request:
-
-1. Explain briefly what the enhancement is and why you think it would be useful.
-2. Provide any other necessary or useful information regarding your issue, such as (code) examples or related links.
-
-
-When submitting a bug report, please follow the template below:
-->
-
-### Issue Summary
-<!-- Explanation of the issue. Expectation vs. actual behavior. -->
-... ... ...
-
-#### System Information
- **Operating System:** [e.g. Windows 10, Mac OS 10.12, Ubuntu 16.04, ...]
- **.NET / Mono Version:** [e.g. .NET 4.7.1, Mono 4.6.2, ...]
- **OpenRA Version:** [e.g. release-20180218, playtest-20180208, ...]
- **Mod:** [e.g. Red Alert, Tiberian Dawn, Dune2000, ...]
-
-#### Additional Information:
- Steps to reproduce
-	1. Step
-	2. Step
-	3. ...
-
- Logs
-<!-- If you have a log (e.g. debug.log, exception.log), zip and attach it. -->
-
- OpenRA Replays
-<!-- You have to zip it before you can attach it. When does the issue appear [e.g. 10:33]? -->
-
- Screenshots & Videos
-<!-- You should be able to attach screenshots by drag&drop. Videos need to be uploaded to an external platform (e.g. https://www.youtube.com, https://www.dropbox.com) -->
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,16 +0,0 @@
-Thank you for your contribution to OpenRA!
-
-Please be aware that we do not have enough project maintainers to match the rate of contributions, so it may take several days before somebody is able to respond to your Pull Request.
-
-You can help speed up the review process by following a few steps:
-
-* Make sure that you have read and understand the OpenRA Coding Standard (see https://github.com/OpenRA/OpenRA/wiki/Coding-Standard).
-* Write quality commit messages (see https://chris.beams.io/posts/git-commit/).
-* Only commit changes that directly relate to your Pull Request.  Use your Git interface to unstage any unrelated changes to project files, line endings, whitespace, or other files.
-* Review the code diff view below to double check that your changes satisfy the above three points.
-* Use the `make test` and `make check` commands to check for (and fix!) any issues that are reported by our automated tests.
-* If you are changing shared mod or engine code, make sure that you have tested your changes in all four default mods.
-* Respond to review comments as soon as you reasonably can.  Reviewers will usually prioritize Pull Requests that are still fresh in their minds.  Make sure to leave a comment when you push new changes, otherwise GitHub does not automatically notify reviewers!
-* Leave a polite comment asking for reviews if a week or more has passed without feedback.
-
-If you need any help you can ask in the #openra IRC channel on freenode (most active during European evenings).
--- a/.gitignore
+++ b/.gitignore
@@ -1,69 +1,80 @@
-# Visual Studio
-Release
-bin
-obj
-*.ncb
-*.vcproj*
-*.suo
-*.user
-*.sln.cache
-*.manifest
-*.CodeAnalysisLog.xml
-*.lastcodeanalysissucceeded
-_ReSharper.*/
-/.vs
-
-# binaries
-mods/*/*.dll
-mods/*/*.mdb
-mods/*/*.pdb
-/*.dll
-/*.dll.config
-/*.so
-/*.dylib
-/*.pdb
-/*.mdb
-/*.exe
-/*.exe.config
-thirdparty/download/*
-*.mmdb.gz
-
-# backup files by various editors
-*~
-*.orig
-\#*
-.*.sw?
-
-# Monodevelop
-*.pidb
-*.userprefs
-
-# Mac OS X
-.DS_Store
-
-# auto-generated documentation
-DOCUMENTATION.md
-WEAPONS.md
-Lua-API.md
-Settings.md
-*.html
-openra.6
-update.log
-
-# StyleCop
-*.Cache
-StyleCopViolations.xml
-
-# SublimeText
-*.sublime-project
-*.sublime-workspace
-
-# NUnit
-/TestResult.xml
-/lib/
-
-# Support directory
-/Support
-
-# IntelliJ files
-.idea
+# Visual Studio
+Release
+bin
+obj
+*.ncb
+*.vcproj*
+*.suo
+*.user
+*.sln.cache
+*.manifest
+*.CodeAnalysisLog.xml
+*.lastcodeanalysissucceeded
+_ReSharper.*/
+
+# movies
+*.vqa
+
+# archives
+*.mix
+
+# binaries
+mods/*/*.dll
+mods/*/*.mdb
+/*.dll
+/*.dll.config
+/*.so
+/*.dylib
+/*.pdb
+/*.mdb
+/*.exe
+thirdparty/download/*
+*.mmdb.gz
+
+# backup files by various editors
+*~
+*.orig
+\#*
+.*.sw?
+
+# Monodevelop
+*.pidb
+*.userprefs
+
+# Mac OS X
+.DS_Store
+
+# XCode
+packaging/osx/launcher/build/
+packaging/osx/launcher/OpenRA.xcodeproj/*.pbxuser
+packaging/osx/launcher/OpenRA.xcodeproj/*.perspectivev3
+packaging/osx/launcher/OpenRA.xcodeproj/*.mode1v3
+temp.c
+temp.o
+temp.s
+OpenRA.Launcher.Mac/build/
+OpenRA.Launcher.Mac/OpenRA.xcodeproj/*.pbxuser
+OpenRA.Launcher.Mac/OpenRA.xcodeproj/*.perspectivev3
+OpenRA.Launcher.Mac/OpenRA.xcodeproj/*.mode1v3
+*.resources
+
+# auto-generated documentation
+DOCUMENTATION.md
+Lua-API.md
+*.html
+openra.6
+
+# StyleCop
+*.Cache
+StyleCopViolations.xml
+
+# SublimeText
+*.sublime-project
+*.sublime-workspace
+
+# NUnit
+/TestResult.xml
+/lib/
+
+# Support directory
+/Support
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,11 @@
 # Travis-CI Build for OpenRA
 # see travis-ci.org for details

-dist: xenial
 language: csharp
-mono: 5.20.1
+mono: 4.4.2
+
+# http://docs.travis-ci.com/user/migrating-from-legacy
+sudo: false

 cache:
  directories:
@@ -13,14 +15,10 @@ addons:
  apt:
    packages:
    - lua5.1
+    - nsis
+    - nsis-common
    - dpkg
    - markdown
-    - zlib1g-dev
-    - libbz2-dev
-    - cmake
-    - genisoimage
-    - fakeroot
-    - zsync

 # Environment variables
 env:
@@ -33,7 +31,15 @@ env:
 # Run the NUnit tests
 script:
 - travis_retry make all-dependencies
- - make all
+ - make all SDK="-sdk:4.5"
+ - make check
+ - make check-scripts
+ - make test
+ - make nunit
+
+# Automatically update the trait documentation and Lua API
+after_success:
+ - test $TRAVIS_PULL_REQUEST == "false" && make docs && cd packaging && ./update-wiki.sh $TRAVIS_BRANCH; cd ..

 # Only watch the development branch and tagged release.
 branches:
@@ -41,30 +47,35 @@ branches:
   - /^release-.*$/
   - /^playtest-.*$/
   - /^pkgtest-.*$/
-   - /^devtest-.*$/
   - /^prep-.*$/
   - bleed

+# Notify developers when build passed/failed.
+notifications:
+  irc:
+    template:
+      - "%{repository}#%{build_number} %{commit} %{author}: %{message} %{build_url}"
+    channels:
+      - "irc.freenode.net#openra"
+    use_notice: true
+    skip_join: true
+
 before_deploy:
- - wget http://mirrors.kernel.org/ubuntu/pool/universe/n/nsis/nsis-common_3.03-2_all.deb
- - wget http://mirrors.kernel.org/ubuntu/pool/universe/n/nsis/nsis_3.03-2_amd64.deb
- - sudo dpkg -i nsis-common_3.03-2_all.deb
- - sudo dpkg -i nsis_3.03-2_amd64.deb
- - makensis -VERSION
 - export PATH=$PATH:$HOME/usr/bin
 - DOTVERSION=`echo ${TRAVIS_TAG} | sed "s/-/\\./g"`
 - cd packaging
 - mkdir build
 - ./package-all.sh ${TRAVIS_TAG} ${PWD}/build/
-
 deploy:
  provider: releases
  api_key:
-    secure: BzLdjZHvDqd5jyyHS8KK8zrNiXEIQiGRS/RMfqK6LuFPC4mXYDE4C/0oLPe93ULtai6LgUUkwB+zKq4lDV109EBO8Xp0jXKdDLLsepGU5xRLt3Z2tT4Zj+Nx6daVjAJe1MaKO5Zo5ODi8kBploRnPCffA8AMzOyQ+OwwJNlcRSs=
-  file_glob: true
-  file: build/*
+    secure: "g/LU11f+mjqv+lj0sR1UliHwogXL4ofJUwoG5Dbqlvdf5UTLWytw/OWSCv8RGyuh10miyWeaoqHh1cn2C1IFhUEqN1sSeKKKOWOTvJ2FR5mzi9uH3d/MOBzG5icQ7Qh0fZ1YPz5RaJJhYu6bmfvA/1gD49GoaX2kxQL4J5cEBgg="
+  file:
+    - build/OpenRA-${TRAVIS_TAG}.exe
+    - build/OpenRA-${TRAVIS_TAG}.zip
+    - build/openra_${DOTVERSION}_all.deb
  skip_cleanup: true
  on:
    all_branches: true
    tags: true
-    repo: pchote/OpenRA
+    repo: OpenRA/OpenRA
--- a/35
+++ b/35
@@ -5,8 +5,10 @@ The OpenRA developers are:
    * Chris Forbes (chrisf)
    * Igor Popov (ihptru)
    * Lukas Franke (abcdefg30)
+    * Matthias Mailänder (Mailaender)
    * Oliver Brakmann (obrakmann)
    * Paul Chote (pchote)
+    * Pavel Penev (penev92)
    * Reaperrr
    * Tom Roostan (RoosterDragon)

@@ -15,10 +17,8 @@ Previous developers included:
    * Caleb Anderson (RobotCaleb)
    * Curtis Shmyr (hamb)
    * Daniel Hernandez (Mancano)
-    * Matthias Mailänder (Mailaender)
    * Megan Bowra-Dean (beedee)
    * Mike Bundy (kehaar)
-    * Pavel Penev (penev92)
    * Robert Pepperell (ytinasni)
    * ScottNZ

@@ -38,14 +38,12 @@ Also thanks to:
    * Bellator
    * Biofreak
    * Braxton Williams (Buddytex)
-    * Brendan Gluth (Mechanical_Man)
    * Bryan Wilbur
    * Bugra Cuhadaroglu (BugraC)
    * Christer Ulfsparre (Holloweye)
    * Chris Grant (Unit158)
    * clem
    * Cody Brittain (Generalcamo)
-    * Constantin Helmig (CH4Code)
    * D2k Sardaukar
    * D'Arcy Rush (r34ch)
    * Daniel Derejvanik (Harisson)
@@ -54,7 +52,6 @@ Also thanks to:
    * David Russell (DavidARussell)
    * DeadlySurprise
    * Dmitri Suvorov (suvjunmd)
-    * dtluna
    * Erasmus Schroder (rasco)
    * Eric Bajumpaa (SteelPhase)
    * Evgeniy Sergeev (evgeniysergeev)
@@ -62,26 +59,24 @@ Also thanks to:
    * Florian Wiesbauer (FiveAces)
    * Frank Razenberg (zzattack)
    * Gareth Needham (Ripley`)
-    * Glen Anderson (glen7)
+    * Glen Anderson (GlenAnderson)
    * Glenn Martin Jensen (Baxxster)
    * Gordon Martin (Happy0)
    * Guido Lipke (LipkeGu)
+    * Gyula Zimmermann (Graion Dilach)
    * Hervé Matysiak (Herve-M)
    * Huw Pascoe
    * Ian T. Jacobsen (Smilex)
    * Imago
    * Iran
-    * Ishan Bhargava (ishantheperson)
    * Jacob Dufault (jacobdufault)
    * James Dunne (jsd)
    * James Gilbert (DSUK)
    * Jan-Willem Buurlage (jwbuurlage)
    * Jason (atlimit8)
    * Jeff Harris (jeff_1amstudios)
-    * Jefri Sevkin (Arular)
    * Jes
    * Joakim Lindberg (booom3)
-    * Joe Alam (joealam)
    * John Turner (whinis)
    * Jonas A. Lind (SoScared)
    * Joppy Furr
@@ -89,29 +84,21 @@ Also thanks to:
    * Kenny Hoxworth (hoxworth)
    * Kevin Azzam (ChaoticMind)
    * Krishnakanth Mallik
-    * Kyle Smith (Smitty)
    * Kyrre Soerensen (zypres)
    * Lawrence Wang
    * Lesueur Benjamin (Valkirie)
    * Maarten Meuris (Nyerguds)
-    * Manuel Geiger (Ectras)
    * Mark Olson (markolson)
-    * Markus Hartung (hartmark)
    * Matija Hustic (matija-hustic)
    * Matthew Gatland (mgatland)
    * Matthew Uzzell (MUzzell)
    * Matthijs Benschop (Nerdie)
    * Max621
    * Max Ugrumov (katzsmile)
-    * Mazar Farran (mazarf)
    * Michael Rätzel
-    * Michael Silber (frühstück)
    * Michael Sztolcman (s1w_)
-    * Mike Gagné (AngryBirdz)
-    * Muh
    * Mustafa Alperen Seki (MustaphaTR)
    * Neil Shivkar (havok13888)
-    * Nikolay Fomin (netnazgul)
    * Nooze
    * Nukem
    * Okunev Yu Dmitry (xaionaro)
@@ -120,9 +107,8 @@ Also thanks to:
    * Paul Dovydaitis (pdovy)
    * Pavlos Touboulidis (pav)
    * Pedro Ferreira Ramos (bateramos)
-    * Peter Amrehn (jongleur1983)
    * Pizzaoverhead
-    * Pi Delport (pjdelport)
+    * Piët Delport (pjdelport)
    * Psydev
    * Raphael Vogt (TheRaffy, Yellow)
    * Raymond Bedrossian (Squiggles211)
@@ -139,11 +125,8 @@ Also thanks to:
    * Teemu Nieminen (Temeez)
    * Tim Mylemans (gecko)
    * Tirili
-    * Tomas Einarsson (Mesacer)
-    * Tom van Leth (tovl)
    * Tristan Keating (Kilkakon)
    * Tristan Mühlbacher (MicroBit)
-    * UnknownProgrammer
    * Vladimir Komarov (VrKomarov)
    * Wuschel

@@ -164,6 +147,9 @@ the Apache 2.0 license.
 Using GeoLite2 data created by MaxMind and
 distributed under the CC BY-SA 3.0 license.

+Using SharpFont created by Robert Rouhani and
+distributed under the MIT license.
+
 Using SDL2-CS and OpenAL-CS created by Ethan
 Lee and released under the zlib license.

@@ -180,8 +166,9 @@ under the MIT license.
 Using ICSharpCode.SharpZipLib initially by Mike
 Krueger and distributed under the GNU GPL terms.

-Using rix0rrr.BeaconLib developed by Rico Huijbers
-distributed under MIT License.
+Using SmartIrc4Net developed by Mirco Bauer
+distributed under the LGPL version 2.1 or later.
+

 Finally, special thanks goes to the original teams
 at Westwood Studios and EA for creating the classic
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -1,76 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, gender identity and expression, level of experience,
-nationality, personal appearance, race, religion, or sexual identity and
-orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
-advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by private-messaging a project team member (users with a + in front
-of their name) via our IRC channel (#openra on freenode –
-[webchat](http://webchat.freenode.net/?channels=openra)). All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at [http://contributor-covenant.org/version/1/4][version]
-
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/4/
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,8 +1,5 @@
 # OpenRA Contributing Guidelines

-## Participating
-Help us keep OpenRA open and inclusive. Please read and follow our [Code of Conduct](https://github.com/OpenRA/OpenRA/blob/bleed/CODE_OF_CONDUCT.md).
-
 ## Bug reports

 * Have you read the [FAQ](https://github.com/OpenRA/OpenRA/wiki/FAQ)?
@@ -20,7 +17,7 @@ Help us keep OpenRA open and inclusive. Please read and follow our [Code of Cond

 Please `git rebase` to the latest revision of the bleed branch.

-Don't forget to add yourself to [AUTHORS](https://github.com/OpenRA/OpenRA/blob/bleed/AUTHORS).
+Don't forget to add youself to [AUTHORS](https://github.com/OpenRA/OpenRA/blob/bleed/AUTHORS).

 Please propose a [CHANGELOG](https://github.com/OpenRA/OpenRA/wiki/CHANGELOG) entry in the pull-request comments.

--- a/INSTALL.md
+++ b/INSTALL.md
@@ -6,107 +6,78 @@ The following lists per-platform dependencies required to build from source.
 Windows
 =======

-Compiling OpenRA requires the following dependencies:
-* [Windows PowerShell >= 4.0](http://microsoft.com/powershell) (included by default in recent Windows 10 versions)
-* [.NET Framework 4.6.1 (Developer Pack)](https://dotnet.microsoft.com/download/dotnet-framework/net461) (or via Visual Studio 2017)
-* [.NET Core 2.2 SDK](https://dotnet.microsoft.com/download/dotnet-core/2.2) (or via Visual Studio 2017)
+* [Windows PowerShell >= 4.0](http://microsoft.com/powershell)
+* [.NET Framework >= 4.5 (Client Profile)](http://www.microsoft.com/en-us/download/details.aspx?id=30653)
+* [SDL 2](http://www.libsdl.org/download-2.0.php) (included)
+* [FreeType](http://gnuwin32.sourceforge.net/packages/freetype.htm) (included)
+* [zlib](http://gnuwin32.sourceforge.net/packages/zlib.htm) (included)
+* [OpenAL](http://kcat.strangesoft.net/openal.html) (included)
+* [liblua 5.1](http://luabinaries.sourceforge.net/download.html) (included)

-Type `make dependencies` in a command terminal to download pre-compiled native libraries for:
-* [SDL 2](http://www.libsdl.org/download-2.0.php)
-* [FreeType](http://gnuwin32.sourceforge.net/packages/freetype.htm)
-* [zlib](http://gnuwin32.sourceforge.net/packages/zlib.htm)
-* [OpenAL](http://kcat.strangesoft.net/openal.html)
-* [liblua 5.1](http://luabinaries.sourceforge.net/download.html)
+You need to fetch the thirdparty dependencies using [NuGet](http://www.nuget.org) and place them at the appropriate places by typing `make dependencies` in a command terminal.

 To compile OpenRA, open the `OpenRA.sln` solution in the main folder, build it from the command-line with MSBuild or use the Makefile analogue command `make all` scripted in PowerShell syntax.

-Run the game with `launch-game.cmd`. It can be handed arguments that specify the exact mod one wishes to run, for example, run `launch-game.cmd Game.Mod=ra` to launch Red Alert, `launch-game.cmd Game.Mod=cnc` to start Tiberian dawn or `launch-game.cmd Game.Mod=d2k` to launch Dune 2000.
+Run the game with `OpenRA.Game.exe Game.Mod=ra` for Red Alert or `OpenRA.Game.exe Game.Mod=cnc` for Tiberian Dawn.

 Linux
 =====

-Mono, version 5.4 or later, is required to compile OpenRA. You can add the [upstream mono repository](https://www.mono-project.com/download/stable/#download-lin) for your distro to obtain the latest version if your system packages are not sufficient.
+Use `make dependencies` to map the native libraries to your system, fetch the remaining CLI dependencies using [NuGet](http://www.nuget.org) and place them at the appropriate places.

-Use `make dependencies` to map the native libraries to your system and fetch the remaining CLI dependencies to place them at the appropriate places.
+To compile OpenRA, run `make all` from the command line.

-To compile OpenRA, run `make all` from the command line. After this one can run the game with `./launch-game.sh`. It is also possible to specify the mod you wish to run from the command line, e.g. with `./launch-game.sh Game.Mod=ts` if you wish to try the experimental Tiberian Sun mod. 
+Run with either `launch-game.sh` or `mono --debug OpenRA.Game.exe`.

-Type `sudo make install` for system-wide installation. Run `sudo make install-linux-shortcuts` to get startup scripts, icons and desktop files. You can then run the Red Alert by executing the `openra-ra` command, the Dune 2000 mod by running the `openra-d2k` command and Tiberian Dawn by the `openra-cnc` command. Alternatively, you can also run these mods by clicking on their desktop shortcuts if you ran `sudo make install-linux-shortcuts`. 
-
-Arch Linux
----------
-
-It is important to note there is an unofficial [`openra-git`](https://aur.archlinux.org/packages/openra-git) package in the Arch User Repository (AUR) of Arch Linux. If manually compiling is the way you wish to go the build and runtime dependencies can be installed with:
-
-```
-sudo pacman -S mono openal libgl freetype2 sdl2 lua51 xdg-utils zenity
-```
+Type `sudo make install-all` for system wide installation. Run `make install-linux-shortcuts` to get startup scripts, icons and desktop files. You can then run from the `openra` shortcut.

 Debian/Ubuntu
 -------------

-:warning: The `mono` packages in the Ubuntu < 19.04 and Debian < 10 repositories are too old to support OpenRA. :warning:
-
-See the instructions under the *Linux* section above to upgrade `mono` using the upstream releases if needed.
-
-```
-sudo apt install mono-devel libfreetype6 libopenal1 liblua5.1-0 libsdl2-2.0-0 xdg-utils zenity wget
-```
-
-Fedora
------
-
-:warning: The `mono` packages in the Fedora repositories are too old to support OpenRA. :warning:
-
-See the instructions under the *Linux* section above to upgrade `mono` using the upstream releases.
-
-
-```
-sudo dnf install "pkgconfig(mono)" SDL2 freetype "lua = 5.1" openal-soft xdg-utils zenity
-```
-
-Gentoo
------
-
-```
-sudo emerge -av dev-lang/mono dev-dotnet/libgdiplus media-libs/freetype:2 media-libs/libsdl2 media-libs/openal virtual/jpeg virtual/opengl '=dev-lang/lua-5.1.5*' x11-misc/xdg-utils gnome-extra/zenity
-```
-
-Mageia
------
-
-```
-sudo dnf install "pkgconfig(mono)" SDL2 freetype "lib*lua5.1" "lib*freetype2" "lib*sdl2.0_0" openal-soft xdg-utils zenity
-```
+* nuget
+* mono-devel
+* libfreetype6
+* libopenal1
+* liblua5.1-0
+* libsdl2-2.0-0
+* xdg-utils
+* zenity
+* curl

 openSUSE
 --------

-```
-sudo zypper in mono-devel openal-soft freetype2 SDL2 lua51 xdg-utils zenity
-```
+* mono-devel
+* nuget
+* openal
+* freetype2
+* SDL2
+* lua51
+* xdg-utils
+* zenity
+* curl

-Red Hat Enterprise Linux (and rebuilds, e.g. CentOS)
----------------------------------------------------
+Gentoo
+------

-The EPEL repository is required in order for the following command to run properly. 
-
-```
-sudo yum install "pkgconfig(mono)" SDL2 freetype "lua = 5.1" openal-soft xdg-utils zenity
-```
+* dev-lang/mono
+* dev-dotnet/libgdiplus
+* dev-dotnet/nuget
+* media-libs/freetype:2
+* media-libs/libsdl2
+* media-libs/openal
+* virtual/jpeg
+* virtual/opengl
+* dev-lang/lua-5.1.5
+* x11-misc/xdg-utils
+* gnome-extra/zenity
+* net-misc/curl

 OSX
 =====

-Before compiling OpenRA you must install the following dependencies:
-* [Mono >= 5.4](https://www.mono-project.com/download/stable/#download-mac)
-
-Use `make dependencies` to download pre-compiled native libraries for:
-* [SDL 2](http://www.libsdl.org/download-2.0.php)
-* [FreeType](http://gnuwin32.sourceforge.net/packages/freetype.htm)
-* [OpenAL](http://kcat.strangesoft.net/openal.html)
-* [liblua 5.1](http://luabinaries.sourceforge.net/download.html)
+Use `make dependencies` to map the native libraries to your system.

 To compile OpenRA, run `make` from the command line.

-Run with `./launch-game.sh`.
+Run with `mono --debug OpenRA.Game.exe`.
--- a/485
+++ b/485
@@ -1,7 +1,10 @@
 ############################# INSTRUCTIONS #############################
 #
 # to compile, run:
-#   make [DEBUG=true]
+#   make [DEBUG=false]
+#
+# to compile with development tools, run:
+#   make all [DEBUG=false]
 #
 # to check unit tests (requires NUnit version >= 2.6), run:
 #  make nunit [NUNIT_CONSOLE=<path-to/nunit[2]-console>] [NUNIT_LIBS_PATH=<path-to-libs-dir>] [NUNIT_LIBS=<nunit-libs>]
@@ -14,16 +17,18 @@
 # to check the official mod dlls for StyleCop violations, run:
 #   make check
 #
+# to generate documentation aimed at modders, run:
+#   make docs
+#
 # to install, run:
 #   make [prefix=/foo] [bindir=/bar/bin] install
 #
+# to install with development tools, run:
+#   make [prefix=/foo] [bindir=/bar/bin] install-all
+#
 # to install Linux startup scripts, desktop files and icons:
 #   make install-linux-shortcuts [DEBUG=false]
 #
-# to install the engine and common mod files (omitting the default mods):
-#   make install-engine
-#   make install-common-mod-files
-#
 # to uninstall, run:
 #   make uninstall
 #
@@ -33,22 +38,28 @@
 # to start the game, run:
 #   openra

+
+
 ############################## TOOLCHAIN ###############################
 #
-# List of .NET assemblies that we can guarantee exist
-# OpenRA.Game.dll is a harmless false positive that we can ignore
-WHITELISTED_OPENRA_ASSEMBLIES = OpenRA.Game.exe OpenRA.Utility.exe OpenRA.Platforms.Default.dll OpenRA.Mods.Common.dll OpenRA.Mods.Cnc.dll OpenRA.Mods.D2k.dll OpenRA.Game.dll
-
-# These are explicitly shipped alongside our core files by the packaging script
-WHITELISTED_THIRDPARTY_ASSEMBLIES = ICSharpCode.SharpZipLib.dll FuzzyLogicLibrary.dll MaxMind.Db.dll Eluant.dll rix0rrr.BeaconLib.dll Open.Nat.dll SDL2-CS.dll OpenAL-CS.dll 
-
-# These are shipped in our custom minimal mono runtime and also available in the full system-installed .NET/mono stack
-# This list *must* be kept in sync with the files packaged by the AppImageSupport and OpenRALauncherOSX repositories
-WHITELISTED_CORE_ASSEMBLIES = mscorlib.dll System.dll System.Configuration.dll System.Core.dll System.Numerics.dll System.Security.dll System.Xml.dll Mono.Security.dll
-
+SDK         ?=
+CSC         = mcs $(SDK)
+CSFLAGS     = -nologo -warn:4 -codepage:utf8 -unsafe -warnaserror
+DEFINE      = TRACE
+COMMON_LIBS = System.dll System.Core.dll System.Data.dll System.Data.DataSetExtensions.dll System.Drawing.dll System.Xml.dll thirdparty/download/ICSharpCode.SharpZipLib.dll thirdparty/download/FuzzyLogicLibrary.dll thirdparty/download/MaxMind.Db.dll thirdparty/download/MaxMind.GeoIP2.dll thirdparty/download/Eluant.dll thirdparty/download/SmarIrc4net.dll
 NUNIT_LIBS_PATH :=
 NUNIT_LIBS  := $(NUNIT_LIBS_PATH)nunit.framework.dll

+DEBUG = true
+ifeq ($(DEBUG), $(filter $(DEBUG),false no n off 0))
+CSFLAGS   += -debug:pdbonly -optimize+
+else
+CSFLAGS   += -debug:full -optimize-
+DEFINE    := DEBUG;$(DEFINE)
+endif
+
+
+
 ######################### UTILITIES/SETTINGS ###########################
 #
 # install locations
@@ -75,13 +86,9 @@ INSTALL_DIR = $(INSTALL) -d
 INSTALL_PROGRAM = $(INSTALL) -m755
 INSTALL_DATA = $(INSTALL) -m644

-# Toolchain
-MSBUILD = msbuild -verbosity:m -nologo
-
-# Enable 32 bit builds while generating the windows installer
-WIN32 = false
-
 # program targets
+CORE = pdefault game utility server
+TOOLS = gamemonitor
 VERSION     = $(shell git name-rev --name-only --tags --no-undefined HEAD 2>/dev/null || echo git-`git rev-parse --short HEAD`)

 # dependencies
@@ -92,30 +99,136 @@ else
 os-dependencies = linux-dependencies
 endif

+
+
+######################## PROGRAM TARGET RULES ##########################
+#
+# Core binaries
+
+game_SRCS := $(shell find OpenRA.Game/ -iname '*.cs')
+game_TARGET = OpenRA.Game.exe
+game_KIND = winexe
+game_LIBS = $(COMMON_LIBS) $(game_DEPS) thirdparty/download/SharpFont.dll thirdparty/download/Open.Nat.dll
+game_FLAGS = -win32icon:OpenRA.Game/OpenRA.ico
+PROGRAMS += game
+game: $(game_TARGET)
+
+# Platform dlls
+pdefault_SRCS := $(shell find OpenRA.Platforms.Default/ -iname '*.cs')
+pdefault_TARGET = OpenRA.Platforms.Default.dll
+pdefault_KIND = library
+pdefault_DEPS = $(game_TARGET)
+pdefault_LIBS = $(COMMON_LIBS) thirdparty/download/SDL2-CS.dll thirdparty/download/OpenAL-CS.dll $(pdefault_DEPS)
+PROGRAMS += pdefault
+platforms: $(pdefault_TARGET)
+
+# Mods Common
+mod_common_SRCS := $(shell find OpenRA.Mods.Common/ -iname '*.cs')
+mod_common_TARGET = mods/common/OpenRA.Mods.Common.dll
+mod_common_KIND = library
+mod_common_DEPS = $(game_TARGET)
+mod_common_LIBS = $(COMMON_LIBS) $(STD_MOD_LIBS) thirdparty/download/StyleCop.dll thirdparty/download/StyleCop.CSharp.dll thirdparty/download/StyleCop.CSharp.Rules.dll
+PROGRAMS += mod_common
+mod_common: $(mod_common_TARGET)
+
+# NUnit testing
+test_dll_SRCS := $(shell find OpenRA.Test/ -iname '*.cs')
+test_dll_TARGET = OpenRA.Test.dll
+test_dll_KIND = library
+test_dll_DEPS = $(game_TARGET) $(mod_common_TARGET)
+test_dll_FLAGS = -warn:1
+test_dll_LIBS = $(COMMON_LIBS) $(game_TARGET) $(mod_common_TARGET) $(NUNIT_LIBS)
+PROGRAMS += test_dll
+test_dll: $(test_dll_TARGET)
+
+##### Official Mods #####
+
+STD_MOD_LIBS	= $(game_TARGET)
+STD_MOD_DEPS	= $(STD_MOD_LIBS)
+
+# Red Alert
+mod_ra_SRCS := $(shell find OpenRA.Mods.RA/ -iname '*.cs')
+mod_ra_TARGET = mods/ra/OpenRA.Mods.RA.dll
+mod_ra_KIND = library
+mod_ra_DEPS = $(STD_MOD_DEPS) $(mod_common_TARGET)
+mod_ra_LIBS = $(COMMON_LIBS) $(STD_MOD_LIBS) $(mod_common_TARGET)
+PROGRAMS += mod_ra
+mod_ra: $(mod_ra_TARGET)
+
+# Command and Conquer
+mod_cnc_SRCS := $(shell find OpenRA.Mods.Cnc/ -iname '*.cs')
+mod_cnc_TARGET = mods/cnc/OpenRA.Mods.Cnc.dll
+mod_cnc_KIND = library
+mod_cnc_DEPS = $(STD_MOD_DEPS) $(mod_common_TARGET)
+mod_cnc_LIBS = $(COMMON_LIBS) $(STD_MOD_LIBS) $(mod_common_TARGET)
+PROGRAMS += mod_cnc
+mod_cnc: $(mod_cnc_TARGET)
+
+# Dune 2000
+mod_d2k_SRCS := $(shell find OpenRA.Mods.D2k/ -iname '*.cs')
+mod_d2k_TARGET = mods/d2k/OpenRA.Mods.D2k.dll
+mod_d2k_KIND = library
+mod_d2k_DEPS = $(STD_MOD_DEPS) $(mod_common_TARGET)
+mod_d2k_LIBS = $(COMMON_LIBS) $(STD_MOD_LIBS) $(mod_common_TARGET)
+PROGRAMS += mod_d2k
+mod_d2k: $(mod_d2k_TARGET)
+
+# Tiberian Sun
+mod_ts_SRCS := $(shell find OpenRA.Mods.TS/ -iname '*.cs')
+mod_ts_TARGET = mods/ts/OpenRA.Mods.TS.dll
+mod_ts_KIND = library
+mod_ts_DEPS = $(STD_MOD_DEPS) $(mod_common_TARGET)
+mod_ts_LIBS = $(COMMON_LIBS) $(STD_MOD_LIBS) $(mod_common_TARGET)
+PROGRAMS += mod_ts
+mod_ts: $(mod_ts_TARGET)
+
 check-scripts:
 	@echo
 	@echo "Checking for Lua syntax errors..."
 	@luac -p $(shell find mods/*/maps/* -iname '*.lua')
 	@luac -p $(shell find lua/* -iname '*.lua')

-check: dependencies
+check: utility mods
 	@echo
-	@echo "Compiling in debug mode..."
-	@$(MSBUILD) -t:build -p:Configuration=Debug
+	@echo "Checking for code style violations in OpenRA.Game..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Game
 	@echo
-	@echo "Checking runtime assemblies..."
-	@mono --debug OpenRA.Utility.exe all --check-runtime-assemblies $(WHITELISTED_OPENRA_ASSEMBLIES) $(WHITELISTED_THIRDPARTY_ASSEMBLIES) $(WHITELISTED_CORE_ASSEMBLIES)
+	@echo "Checking for code style violations in OpenRA.Platforms.Default..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Platforms.Default
+	@echo
+	@echo "Checking for code style violations in OpenRA.GameMonitor..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.GameMonitor
+	@echo
+	@echo "Checking for code style violations in OpenRA.Mods.Common..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Mods.Common
+	@echo
+	@echo "Checking for code style violations in OpenRA.Mods.RA..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Mods.RA
+	@echo
+	@echo "Checking for code style violations in OpenRA.Mods.Cnc..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Mods.Cnc
+	@echo
+	@echo "Checking for code style violations in OpenRA.Mods.D2k..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Mods.D2k
+	@echo
+	@echo "Checking for code style violations in OpenRA.Mods.TS..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Mods.TS
+	@echo
+	@echo "Checking for code style violations in OpenRA.Utility..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Utility
+	@echo
+	@echo "Checking for code style violations in OpenRA.Test..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Test
 	@echo
 	@echo "Checking for explicit interface violations..."
 	@mono --debug OpenRA.Utility.exe all --check-explicit-interfaces
 	@echo
-	@echo "Checking for incorrect conditional trait interface overrides..."
-	@mono --debug OpenRA.Utility.exe all --check-conditional-trait-interface-overrides
-
+	@echo "Checking for code style violations in OpenRA.Server..."
+	@mono --debug OpenRA.Utility.exe ra --check-code-style OpenRA.Server

 NUNIT_CONSOLE := $(shell test -f thirdparty/download/nunit3-console.exe && echo mono thirdparty/download/nunit3-console.exe || \
 	which nunit3-console 2>/dev/null || which nunit2-console 2>/dev/null || which nunit-console 2>/dev/null)
-nunit: core
+nunit: test_dll
 	@echo
 	@echo "Checking unit tests..."
 	@if [ "$(NUNIT_CONSOLE)" = "" ] ; then \
@@ -132,7 +245,7 @@ nunit: core
 	fi
 	@$(NUNIT_CONSOLE) --noresult OpenRA.Test.nunit

-test: core
+test: utility mods
 	@echo
 	@echo "Testing Tiberian Sun mod MiniYAML..."
 	@mono --debug OpenRA.Utility.exe ts --check-yaml
@@ -146,22 +259,77 @@ test: core
 	@echo "Testing Red Alert mod MiniYAML..."
 	@mono --debug OpenRA.Utility.exe ra --check-yaml

+
+##### Launchers / Utilities #####
+
+gamemonitor_SRCS := $(shell find OpenRA.GameMonitor/ -iname '*.cs')
+gamemonitor_TARGET = OpenRA.exe
+gamemonitor_KIND = winexe
+gamemonitor_DEPS = $(game_TARGET)
+gamemonitor_LIBS = $(COMMON_LIBS) $(gamemonitor_DEPS) System.Windows.Forms.dll
+gamemonitor_FLAGS = -win32icon:OpenRA.Game/OpenRA.ico
+PROGRAMS += gamemonitor
+gamemonitor: $(gamemonitor_TARGET)
+
+# Backend for the launcher apps - queries game/mod info and applies actions to an install
+utility_SRCS := $(shell find OpenRA.Utility/ -iname '*.cs')
+utility_TARGET = OpenRA.Utility.exe
+utility_KIND = exe
+utility_DEPS = $(game_TARGET)
+utility_LIBS = $(COMMON_LIBS) $(utility_DEPS) thirdparty/download/ICSharpCode.SharpZipLib.dll
+PROGRAMS += utility
+utility: $(utility_TARGET)
+
+# Dedicated server
+server_SRCS := $(shell find OpenRA.Server/ -iname '*.cs')
+server_TARGET = OpenRA.Server.exe
+server_KIND = exe
+server_DEPS = $(game_TARGET)
+server_LIBS = $(COMMON_LIBS) $(server_DEPS)
+PROGRAMS += server
+server: $(server_TARGET)
+
+# Patches binary headers to work around a mono bug
+fixheader.exe: packaging/fixheader.cs
+	@echo CSC fixheader.exe
+	@$(CSC) packaging/fixheader.cs $(CSFLAGS) -out:fixheader.exe -t:exe $(COMMON_LIBS:%=-r:%)
+
+# Generate build rules for each target defined above in PROGRAMS
+define BUILD_ASSEMBLY
+
+$$($(1)_TARGET): $$($(1)_SRCS) Makefile $$($(1)_DEPS) fixheader.exe
+	@echo CSC $$(@)
+	@$(CSC) $$($(1)_LIBS:%=-r:%) \
+		-out:$$(@) $(CSFLAGS) $$($(1)_FLAGS) \
+		-define:"$(DEFINE)" \
+		-t:"$$($(1)_KIND)" \
+		$$($(1)_EXTRA) \
+		$$($(1)_SRCS)
+	@mono fixheader.exe $$(@) > /dev/null
+	@test `echo $$(@) | sed 's/^.*\.//'` = "dll" && chmod a-x $$(@) || ``
+	@$$($(1)_EXTRA_CMDS)
+endef
+
+$(foreach prog,$(PROGRAMS),$(eval $(call BUILD_ASSEMBLY,$(prog))))
+
+
+
 ########################## MAKE/INSTALL RULES ##########################
 #
-all: dependencies core
+default: core

-core:
-	@command -v $(MSBUILD) >/dev/null || (echo "OpenRA requires the '$(MSBUILD)' tool provided by Mono >= 5.4."; exit 1)
-ifeq ($(WIN32), $(filter $(WIN32),true yes y on 1))
-	@$(MSBUILD) -t:build -p:Configuration="Release-x86"
-else
-	@$(MSBUILD) -t:build -p:Configuration=Release
-endif
+core: game platforms mods utility server
+
+tools: gamemonitor
+
+package: all-dependencies core tools docs version
+
+mods: mod_common mod_ra mod_cnc mod_d2k mod_ts
+
+all: dependencies core tools

 clean:
-	@ $(MSBUILD) -t:clean
-	@-$(RM_F) *.config
-	@-$(RM_F) *.exe *.dll *.dylib ./OpenRA*/*.dll *.pdb mods/**/*.dll mods/**/*.pdb *.resources
+	@-$(RM_F) *.exe *.dll *.dylib *.dll.config ./OpenRA*/*.dll ./OpenRA*/*.mdb *.mdb mods/**/*.dll mods/**/*.mdb *.resources
 	@-$(RM_RF) ./*/bin ./*/obj
 	@-$(RM_RF) ./thirdparty/download

@@ -171,56 +339,64 @@ cli-dependencies:
 	@./thirdparty/fetch-thirdparty-deps.sh
 	@ $(CP_R) thirdparty/download/*.dll .
 	@ $(CP_R) thirdparty/download/*.dll.config .
-	@ test -f OpenRA.Game/obj/project.assets.json || $(MSBUILD) -t:restore

-linux-dependencies: cli-dependencies geoip-dependencies linux-native-dependencies
+linux-dependencies: cli-dependencies linux-native-dependencies

 linux-native-dependencies:
 	@./thirdparty/configure-native-deps.sh

-windows-dependencies: cli-dependencies geoip-dependencies
-ifeq ($(WIN32), $(filter $(WIN32),true yes y on 1))
-	@./thirdparty/fetch-thirdparty-deps-windows.sh x86
-else
-	@./thirdparty/fetch-thirdparty-deps-windows.sh x64
-endif
+windows-dependencies:
+	@./thirdparty/fetch-thirdparty-deps-windows.sh

-osx-dependencies: cli-dependencies geoip-dependencies
+osx-dependencies: cli-dependencies
 	@./thirdparty/fetch-thirdparty-deps-osx.sh
 	@ $(CP_R) thirdparty/download/osx/*.dylib .
 	@ $(CP_R) thirdparty/download/osx/*.dll.config .

-geoip-dependencies:
+dependencies: $(os-dependencies)
 	@./thirdparty/fetch-geoip-db.sh
 	@ $(CP) thirdparty/download/GeoLite2-Country.mmdb.gz .

-dependencies: $(os-dependencies)
+all-dependencies: cli-dependencies windows-dependencies osx-dependencies

-all-dependencies: cli-dependencies windows-dependencies osx-dependencies geoip-dependencies
-
-version: VERSION mods/ra/mod.yaml mods/cnc/mod.yaml mods/d2k/mod.yaml mods/ts/mod.yaml mods/modcontent/mod.yaml mods/all/mod.yaml
-	@echo "$(VERSION)" > VERSION
+version: mods/ra/mod.yaml mods/cnc/mod.yaml mods/d2k/mod.yaml mods/ts/mod.yaml mods/modchooser/mod.yaml mods/all/mod.yaml
 	@for i in $? ; do \
 		awk '{sub("Version:.*$$","Version: $(VERSION)"); print $0}' $${i} > $${i}.tmp && \
-		awk '{sub("/[^/]*: User$$", "/$(VERSION): User"); print $0}' $${i}.tmp > $${i} && \
-		rm $${i}.tmp; \
+		awk '{sub("\tmodchooser:.*$$","\tmodchooser: $(VERSION)"); print $0}' $${i}.tmp > $${i}.tmp2 && \
+		awk '{sub("/[^/]*: User$$", "/$(VERSION): User"); print $0}' $${i}.tmp2 > $${i} && \
+		rm $${i}.tmp $${i}.tmp2; \
 	done

-install: dependencies core install-core
+docs: utility mods version
+	@mono --debug OpenRA.Utility.exe all --docs > DOCUMENTATION.md
+	@mono --debug OpenRA.Utility.exe all --lua-docs > Lua-API.md
+
+man-page: utility mods
+	@mono --debug OpenRA.Utility.exe all --man-page > openra.6
+
+install: install-core
+
+install-all: install-core install-tools

 install-linux-shortcuts: install-linux-scripts install-linux-icons install-linux-desktop

-install-engine:
-	@-echo "Installing OpenRA engine to $(DATA_INSTALL_DIR)"
+install-core: default
+	@-echo "Installing OpenRA to $(DATA_INSTALL_DIR)"
 	@$(INSTALL_DIR) "$(DATA_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) OpenRA.Game.exe "$(DATA_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) OpenRA.Server.exe "$(DATA_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) OpenRA.Utility.exe "$(DATA_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) OpenRA.Platforms.Default.dll "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) $(foreach prog,$(CORE),$($(prog)_TARGET)) "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_DIR) "$(DATA_INSTALL_DIR)/mods"
+	@$(CP_R) mods/common "$(DATA_INSTALL_DIR)/mods/"
+	@$(INSTALL_PROGRAM) $(mod_common_TARGET) "$(DATA_INSTALL_DIR)/mods/common"
+	@$(CP_R) mods/cnc "$(DATA_INSTALL_DIR)/mods/"
+	@$(INSTALL_PROGRAM) $(mod_cnc_TARGET) "$(DATA_INSTALL_DIR)/mods/cnc"
+	@$(CP_R) mods/ra "$(DATA_INSTALL_DIR)/mods/"
+	@$(INSTALL_PROGRAM) $(mod_ra_TARGET) "$(DATA_INSTALL_DIR)/mods/ra"
+	@$(CP_R) mods/d2k "$(DATA_INSTALL_DIR)/mods/"
+	@$(INSTALL_PROGRAM) $(mod_d2k_TARGET) "$(DATA_INSTALL_DIR)/mods/d2k"
+	@$(CP_R) mods/modchooser "$(DATA_INSTALL_DIR)/mods/"

-	@$(INSTALL_DATA) OpenRA.Platforms.Default.dll.config "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_DATA) "global mix database.dat" "$(DATA_INSTALL_DIR)/global mix database.dat"
 	@$(INSTALL_DATA) "GeoLite2-Country.mmdb.gz" "$(DATA_INSTALL_DIR)/GeoLite2-Country.mmdb.gz"
-	@$(INSTALL_DATA) VERSION "$(DATA_INSTALL_DIR)/VERSION"
 	@$(INSTALL_DATA) AUTHORS "$(DATA_INSTALL_DIR)/AUTHORS"
 	@$(INSTALL_DATA) COPYING "$(DATA_INSTALL_DIR)/COPYING"

@@ -231,135 +407,103 @@ install-engine:
 	@$(CP) Eluant* "$(DATA_INSTALL_DIR)"
 	@$(INSTALL_PROGRAM) ICSharpCode.SharpZipLib.dll "$(DATA_INSTALL_DIR)"
 	@$(INSTALL_PROGRAM) FuzzyLogicLibrary.dll "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) SharpFont.dll "$(DATA_INSTALL_DIR)"
+	@$(CP) SharpFont.dll.config "$(DATA_INSTALL_DIR)"
 	@$(INSTALL_PROGRAM) Open.Nat.dll "$(DATA_INSTALL_DIR)"
 	@$(INSTALL_PROGRAM) MaxMind.Db.dll "$(DATA_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) rix0rrr.BeaconLib.dll "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) MaxMind.GeoIP2.dll "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) Newtonsoft.Json.dll "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) SmarIrc4net.dll "$(DATA_INSTALL_DIR)"

-install-common-mod-files:
-	@-echo "Installing OpenRA common mod files to $(DATA_INSTALL_DIR)"
-	@$(INSTALL_DIR) "$(DATA_INSTALL_DIR)/mods"
-	@$(CP_R) mods/common "$(DATA_INSTALL_DIR)/mods/"
-	@$(INSTALL_PROGRAM) mods/common/OpenRA.Mods.Common.dll "$(DATA_INSTALL_DIR)/mods/common"
-	@$(INSTALL_PROGRAM) mods/common/OpenRA.Mods.Cnc.dll "$(DATA_INSTALL_DIR)/mods/common"
-	@$(INSTALL_DATA) "global mix database.dat" "$(DATA_INSTALL_DIR)/global mix database.dat"
-
-install-default-mods:
-	@-echo "Installing OpenRA default mods to $(DATA_INSTALL_DIR)"
-	@$(INSTALL_DIR) "$(DATA_INSTALL_DIR)/mods"
-	@$(CP_R) mods/cnc "$(DATA_INSTALL_DIR)/mods/"
-	@$(CP_R) mods/ra "$(DATA_INSTALL_DIR)/mods/"
-	@$(CP_R) mods/d2k "$(DATA_INSTALL_DIR)/mods/"
-	@$(INSTALL_PROGRAM) mods/d2k/OpenRA.Mods.D2k.dll "$(DATA_INSTALL_DIR)/mods/d2k"
-	@$(CP_R) mods/modcontent "$(DATA_INSTALL_DIR)/mods/"
-
-install-core: install-engine install-common-mod-files install-default-mods
+ifneq ($(UNAME_S),Darwin)
 	@$(CP) *.sh "$(DATA_INSTALL_DIR)"
+endif
+
+install-tools: tools
+	@-echo "Installing OpenRA tools to $(DATA_INSTALL_DIR)"
+	@$(INSTALL_DIR) "$(DATA_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) $(foreach prog,$(TOOLS),$($(prog)_TARGET)) "$(DATA_INSTALL_DIR)"

 install-linux-icons:
-	for SIZE in 16x16 32x32 48x48 64x64 128x128; do \
-		$(INSTALL_DIR) "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps"; \
-		$(INSTALL_DATA) packaging/linux/icons/ra_$$SIZE.png "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps/openra-ra.png"; \
-		$(INSTALL_DATA) packaging/linux/icons/cnc_$$SIZE.png "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps/openra-cnc.png"; \
-		$(INSTALL_DATA) packaging/linux/icons/d2k_$$SIZE.png "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps/openra-d2k.png"; \
-	done
-	$(INSTALL_DIR) "$(DESTDIR)$(datadir)/icons/hicolor/scalable/apps"
-	$(INSTALL_DATA) packaging/linux/icons/ra_scalable.svg "$(DESTDIR)$(datadir)/icons/hicolor/scalable/apps/openra-ra.svg"
-	$(INSTALL_DATA) packaging/linux/icons/cnc_scalable.svg "$(DESTDIR)$(datadir)/icons/hicolor/scalable/apps/openra-cnc.svg"
+	@$(INSTALL_DIR) "$(DESTDIR)$(datadir)/icons/"
+	@$(CP_R) packaging/linux/hicolor "$(DESTDIR)$(datadir)/icons/"

 install-linux-desktop:
 	@$(INSTALL_DIR) "$(DESTDIR)$(datadir)/applications"
-	@sed 's/{MODID}/ra/g' packaging/linux/openra.desktop.in | sed 's/{MODNAME}/Red Alert/g' | sed 's/{TAG}/$(VERSION)/g' > packaging/linux/openra-ra.desktop
-	@$(INSTALL_DATA) packaging/linux/openra-ra.desktop "$(DESTDIR)$(datadir)/applications"
-	@sed 's/{MODID}/cnc/g' packaging/linux/openra.desktop.in | sed 's/{MODNAME}/Tiberian Dawn/g' | sed 's/{TAG}/$(VERSION)/g' > packaging/linux/openra-cnc.desktop
-	@$(INSTALL_DATA) packaging/linux/openra-cnc.desktop "$(DESTDIR)$(datadir)/applications"
-	@sed 's/{MODID}/d2k/g' packaging/linux/openra.desktop.in | sed 's/{MODNAME}/Dune 2000/g' | sed 's/{TAG}/$(VERSION)/g' > packaging/linux/openra-d2k.desktop
-	@$(INSTALL_DATA) packaging/linux/openra-d2k.desktop "$(DESTDIR)$(datadir)/applications"
-	@-$(RM) packaging/linux/openra-ra.desktop packaging/linux/openra-cnc.desktop packaging/linux/openra-d2k.desktop
+	@$(INSTALL_DATA) packaging/linux/openra.desktop "$(DESTDIR)$(datadir)/applications"

 install-linux-mime:
 	@$(INSTALL_DIR) "$(DESTDIR)$(datadir)/mime/packages/"
-	@sed 's/{MODID}/ra/g' packaging/linux/openra-mimeinfo.xml.in | sed 's/{TAG}/$(VERSION)/g' > packaging/linux/openra-mimeinfo.xml
-	@$(INSTALL_DATA) packaging/linux/openra-mimeinfo.xml "$(DESTDIR)$(datadir)/mime/packages/openra-ra.xml"
-	@sed 's/{MODID}/cnc/g' packaging/linux/openra-mimeinfo.xml.in | sed 's/{TAG}/$(VERSION)/g' > packaging/linux/openra-mimeinfo.xml
-	@$(INSTALL_DATA) packaging/linux/openra-mimeinfo.xml "$(DESTDIR)$(datadir)/mime/packages/openra-cnc.xml"
-	@sed 's/{MODID}/d2k/g' packaging/linux/openra-mimeinfo.xml.in | sed 's/{TAG}/$(VERSION)/g' > packaging/linux/openra-mimeinfo.xml
-	@$(INSTALL_DATA) packaging/linux/openra-mimeinfo.xml "$(DESTDIR)$(datadir)/mime/packages/openra-d2k.xml"
+	@$(INSTALL_DATA) packaging/linux/openra-mimeinfo.xml "$(DESTDIR)$(datadir)/mime/packages/openra.xml"
+
+	@$(INSTALL_DIR) "$(DESTDIR)$(datadir)/applications"
+	@$(INSTALL_DATA) packaging/linux/openra-join-servers.desktop "$(DESTDIR)$(datadir)/applications"
+	@$(INSTALL_DATA) packaging/linux/openra-replays.desktop "$(DESTDIR)$(datadir)/applications"
+	@$(INSTALL_DATA) packaging/linux/openra-launch-mod.desktop "$(DESTDIR)$(datadir)/applications"

 install-linux-appdata:
 	@$(INSTALL_DIR) "$(DESTDIR)$(datadir)/appdata/"
-	@sed 's/{MODID}/ra/g' packaging/linux/openra.appdata.xml.in | sed 's/{MOD_NAME}/Red Alert/g' | sed 's/{SCREENSHOT_RA}/ type="default"/g' | sed 's/{SCREENSHOT_CNC}//g' | sed 's/{SCREENSHOT_D2K}//g'> packaging/linux/openra-ra.appdata.xml
-	@$(INSTALL_DATA) packaging/linux/openra-ra.appdata.xml "$(DESTDIR)$(datadir)/appdata/"
-	@sed 's/{MODID}/cnc/g' packaging/linux/openra.appdata.xml.in | sed 's/{MOD_NAME}/Tiberian Dawn/g' | sed 's/{SCREENSHOT_RA}//g' | sed 's/{SCREENSHOT_CNC}/ type="default"/g' | sed 's/{SCREENSHOT_D2K}//g'> packaging/linux/openra-cnc.appdata.xml
-	@$(INSTALL_DATA) packaging/linux/openra-cnc.appdata.xml "$(DESTDIR)$(datadir)/appdata/"
-	@sed 's/{MODID}/d2k/g' packaging/linux/openra.appdata.xml.in | sed 's/{MOD_NAME}/Dune 2000/g' | sed 's/{SCREENSHOT_RA}//g' | sed 's/{SCREENSHOT_CNC}//g' | sed 's/{SCREENSHOT_D2K}/ type="default"/g'> packaging/linux/openra-d2k.appdata.xml
-	@$(INSTALL_DATA) packaging/linux/openra-d2k.appdata.xml "$(DESTDIR)$(datadir)/appdata/"
-	@-$(RM) packaging/linux/openra-ra.appdata.xml packaging/linux/openra-cnc.appdata.xml packaging/linux/openra-d2k.appdata.xml
+	@$(INSTALL_DATA) packaging/linux/openra.appdata.xml "$(DESTDIR)$(datadir)/appdata/"

-install-man-page:
+install-man-page: man-page
 	@$(INSTALL_DIR) "$(DESTDIR)$(mandir)/man6/"
-	@mono --debug OpenRA.Utility.exe all --man-page > openra.6
 	@$(INSTALL_DATA) openra.6 "$(DESTDIR)$(mandir)/man6/"
-	@-$(RM) openra.6

 install-linux-scripts:
+	@echo "#!/bin/sh" > openra
+	@echo 'cd "$(gameinstalldir)"' >> openra
 ifeq ($(DEBUG), $(filter $(DEBUG),false no n off 0))
-	@sed 's/{DEBUG}//' packaging/linux/openra.in | sed 's|{GAME_INSTALL_DIR}|$(gameinstalldir)|' | sed 's|{BIN_DIR}|$(bindir)|' > packaging/linux/openra.debug.in
-	@sed 's/{DEBUG}//' packaging/linux/openra-server.in | sed 's|{GAME_INSTALL_DIR}|$(gameinstalldir)|' | sed 's|{BIN_DIR}|$(bindir)|' > packaging/linux/openra-server.debug.in
+	@echo 'mono OpenRA.Game.exe "$$@"' >> openra
 else
-	@sed 's/{DEBUG}/--debug/' packaging/linux/openra.in | sed 's|{GAME_INSTALL_DIR}|$(gameinstalldir)|' | sed 's|{BIN_DIR}|$(bindir)|' > packaging/linux/openra.debug.in
-	@sed 's/{DEBUG}/--debug/' packaging/linux/openra-server.in | sed 's|{GAME_INSTALL_DIR}|$(gameinstalldir)|' | sed 's|{BIN_DIR}|$(bindir)|' > packaging/linux/openra-server.debug.in
+	@echo 'mono --debug OpenRA.Game.exe "$$@"' >> openra
+endif
+	@echo 'if [ $$? != 0 -a $$? != 1 ]' >> openra
+	@echo 'then' >> openra
+	@echo 'ZENITY=`which zenity` || echo "OpenRA needs zenity installed to display a graphical error dialog. See ~/.openra. for log files."' >> openra
+	@echo '$$ZENITY --question --title "OpenRA" --text "OpenRA has encountered a fatal error.\nLog Files are available in ~/.openra." --ok-label "Quit" --cancel-label "View FAQ" || xdg-open https://github.com/OpenRA/OpenRA/wiki/FAQ' >> openra
+	@echo 'exit 1' >> openra
+	@echo 'fi' >> openra
+
+	@$(INSTALL_DIR) "$(BIN_INSTALL_DIR)"
+	@$(INSTALL_PROGRAM) -m +rx openra "$(BIN_INSTALL_DIR)"
+	@-$(RM) openra
+
+	@echo "#!/bin/sh" > openra-server
+	@echo 'cd "$(gameinstalldir)"' >> openra-server
+ifeq ($(DEBUG), $(filter $(DEBUG),false no n off 0))
+	@echo 'mono OpenRA.Server.exe "$$@"' >> openra-server
+else
+	@echo 'mono --debug OpenRA.Server.exe "$$@"' >> openra-server
 endif

-	@sed 's/{MODID}/ra/g' packaging/linux/openra.debug.in  | sed 's/{TAG}/$(VERSION)/g' | sed 's/{MODNAME}/Red Alert/g' > packaging/linux/openra-ra
-	@sed 's/{MODID}/cnc/g' packaging/linux/openra.debug.in | sed 's/{TAG}/$(VERSION)/g' | sed 's/{MODNAME}/Tiberian Dawn/g' > packaging/linux/openra-cnc
-	@sed 's/{MODID}/d2k/g' packaging/linux/openra.debug.in | sed 's/{TAG}/$(VERSION)/g' | sed 's/{MODNAME}/Dune 2000/g' > packaging/linux/openra-d2k
-
 	@$(INSTALL_DIR) "$(BIN_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) -m +rx packaging/linux/openra-ra "$(BIN_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) -m +rx packaging/linux/openra-cnc "$(BIN_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) -m +rx packaging/linux/openra-d2k "$(BIN_INSTALL_DIR)"
-	@-$(RM) packaging/linux/openra-ra packaging/linux/openra-cnc packaging/linux/openra-d2k packaging/linux/openra.debug.in
-
-	@sed 's/{MODID}/ra/g' packaging/linux/openra-server.debug.in | sed 's/{MODNAME}/Red Alert/g' > packaging/linux/openra-ra-server
-	@sed 's/{MODID}/cnc/g' packaging/linux/openra-server.debug.in | sed 's/{MODNAME}/Tiberian Dawn/g' > packaging/linux/openra-cnc-server
-	@sed 's/{MODID}/d2k/g' packaging/linux/openra-server.debug.in | sed 's/{MODNAME}/Dune 2000/g' > packaging/linux/openra-d2k-server
-
-	@$(INSTALL_DIR) "$(BIN_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) -m +rx packaging/linux/openra-ra-server "$(BIN_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) -m +rx packaging/linux/openra-cnc-server "$(BIN_INSTALL_DIR)"
-	@$(INSTALL_PROGRAM) -m +rx packaging/linux/openra-d2k-server "$(BIN_INSTALL_DIR)"
-	@-$(RM) packaging/linux/openra-ra-server packaging/linux/openra-cnc-server packaging/linux/openra-d2k-server packaging/linux/openra-server.debug.in
+	@$(INSTALL_PROGRAM) -m +rx openra-server "$(BIN_INSTALL_DIR)"
+	@-$(RM) openra-server

 uninstall:
 	@-$(RM_R) "$(DATA_INSTALL_DIR)"
-	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-ra"
-	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-ra-server"
-	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-cnc"
-	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-cnc-server"
-	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-d2k"
-	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-d2k-server"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra-ra.desktop"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra-cnc.desktop"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra-d2k.desktop"
-	@-for SIZE in 16x16 32x32 48x48 64x64 128x128; do \
-		$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps/openra-ra.png"; \
-		$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps/openra-cnc.png"; \
-		$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/$$SIZE/apps/openra-d2k.png"; \
-	done
-	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/scalable/apps/openra-ra.svg"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/scalable/apps/openra-cnc.svg"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/mime/packages/openra-ra.xml"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/mime/packages/openra-cnc.xml"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/mime/packages/openra-d2k.xml"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/appdata/openra-ra.appdata.xml"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/appdata/openra-cnc.appdata.xml"
-	@-$(RM_F) "$(DESTDIR)$(datadir)/appdata/openra-d2k.appdata.xml"
+	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra"
+	@-$(RM_F) "$(BIN_INSTALL_DIR)/openra-server"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra.desktop"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra-join-servers.desktop"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra-launch-mod.desktop"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/applications/openra-join-servers.desktop"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/16x16/apps/openra.png"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/32x32/apps/openra.png"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/48x48/apps/openra.png"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/64x64/apps/openra.png"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/icons/hicolor/128x128/apps/openra.png"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/mime/packages/openra.xml"
+	@-$(RM_F) "$(DESTDIR)$(datadir)/appdata/openra.appdata.xml"
 	@-$(RM_F) "$(DESTDIR)$(mandir)/man6/openra.6"

 help:
 	@echo 'to compile, run:'
 	@echo '  make [DEBUG=false]'
 	@echo
+	@echo 'to compile with development tools, run:'
+	@echo '  make all [DEBUG=false]'
+	@echo
 	@echo 'to check unit tests (requires NUnit version >= 2.6), run:'
 	@echo '  make nunit [NUNIT_CONSOLE=<path-to/nunit[3|2]-console>] [NUNIT_LIBS_PATH=<path-to-libs-dir>] [NUNIT_LIBS=<nunit-libs>]'
 	@echo '     Use NUNIT_CONSOLE if nunit[3|2]-console was not downloaded by `make dependencies` nor is it in bin search paths'
@@ -369,9 +513,15 @@ help:
 	@echo 'to check the official mods for erroneous yaml files, run:'
 	@echo '  make test'
 	@echo
+	@echo 'to generate documentation aimed at modders, run:'
+	@echo '  make docs'
+	@echo
 	@echo 'to install, run:'
 	@echo '  make [prefix=/foo] [bindir=/bar/bin] install'
 	@echo
+	@echo 'to install with development tools, run:'
+	@echo '  make [prefix=/foo] [bindir=/bar/bin] install-all'
+	@echo
 	@echo 'to install Linux startup scripts, desktop files and icons'
 	@echo '  make install-linux-shortcuts [DEBUG=false]'
 	@echo
@@ -381,10 +531,13 @@ help:
 	@echo 'to start the game, run:'
 	@echo '  openra'

+
+
+
 ########################### MAKEFILE SETTINGS ##########################
 #
-.DEFAULT_GOAL := all
+.DEFAULT_GOAL := default

 .SUFFIXES:

-.PHONY: check-scripts check nunit test all core clean distclean cli-dependencies linux-dependencies linux-native-dependencies windows-dependencies osx-dependencies geoip-dependencies dependencies all-dependencies version install install-linux-shortcuts install-engine install-common-mod-files install-default-mods install-core install-linux-icons install-linux-desktop install-linux-mime install-linux-appdata install-man-page install-linux-scripts uninstall help
+.PHONY: core tools package all mods clean distclean dependencies version $(PROGRAMS) nunit
--- a/OpenRA.Game.exe.config
+++ b/OpenRA.Game.exe.config
@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<configuration>
-  <runtime>
-    <loadFromRemoteSources enabled="true" />
-  </runtime>
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <runtime>
+    <loadFromRemoteSources enabled="true" />
+  </runtime>
 </configuration>
--- a/OpenRA.Game/Activities/Activity.cs
+++ b/OpenRA.Game/Activities/Activity.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,170 +9,26 @@
 */
 #endregion

-using System;
 using System.Collections.Generic;
 using System.Linq;
-using OpenRA.Graphics;
-using OpenRA.Primitives;
 using OpenRA.Traits;

 namespace OpenRA.Activities
 {
-	public enum ActivityState { Queued, Active, Canceling, Done }
-
-	public class TargetLineNode
+	public abstract class Activity
 	{
-		public readonly Target Target;
-		public readonly Color Color;
-		public readonly Sprite Tile;
+		public Activity NextActivity { get; set; }
+		protected bool IsCanceled { get; private set; }

-		public TargetLineNode(Target target, Color color, Sprite tile = null)
+		public abstract Activity Tick(Actor self);
+
+		public virtual void Cancel(Actor self)
 		{
-			// Note: Not all activities are drawable. In that case, pass Target.Invalid as target,
-			// if "yield break" in TargetLineNode(Actor self) is not feasible.
-			Target = target;
-			Color = color;
-			Tile = tile;
-		}
-	}
-
-	/*
-	 * Things to be aware of when writing activities:
-	 *
-	 * - Use "return true" at least once somewhere in the tick method.
-	 * - Do not "reuse" (with "SequenceActivities", for example) activity objects that have already started running.
-	 *   Queue a new instance instead.
-	 * - Avoid calling actor.CancelActivity(). It is almost always a bug. Call activity.Cancel() instead.
-	 */
-	public abstract class Activity : IActivityInterface
-	{
-		public ActivityState State { get; private set; }
-
-		protected Activity ChildActivity { get; private set; }
-		public Activity NextActivity { get; private set; }
-
-		public bool IsInterruptible { get; protected set; }
-		public bool ChildHasPriority { get; protected set; }
-		public bool IsCanceling { get { return State == ActivityState.Canceling; } }
-		bool finishing;
-		bool lastRun;
-
-		public Activity()
-		{
-			IsInterruptible = true;
-			ChildHasPriority = true;
+			IsCanceled = true;
+			NextActivity = null;
 		}

-		public Activity TickOuter(Actor self)
-		{
-			if (State == ActivityState.Done)
-				throw new InvalidOperationException("Actor {0} attempted to tick activity {1} after it had already completed.".F(self, GetType()));
-
-			if (State == ActivityState.Queued)
-			{
-				OnFirstRun(self);
-				State = ActivityState.Active;
-			}
-
-			// Only run the parent tick when the child is done.
-			// We must always let the child finish on its own before continuing.
-			if (ChildHasPriority)
-			{
-				lastRun = TickChild(self) && (finishing || Tick(self));
-				finishing |= lastRun;
-			}
-
-			// The parent determines whether the child gets a chance at ticking.
-			else
-				lastRun = Tick(self);
-
-			// Avoid a single tick delay if the childactivity was just queued.
-			if (ChildActivity != null && ChildActivity.State == ActivityState.Queued)
-			{
-				if (ChildHasPriority)
-					lastRun = TickChild(self) && finishing;
-				else
-					TickChild(self);
-			}
-
-			if (lastRun)
-			{
-				State = ActivityState.Done;
-				OnLastRun(self);
-				return NextActivity;
-			}
-
-			return this;
-		}
-
-		protected bool TickChild(Actor self)
-		{
-			ChildActivity = ActivityUtils.RunActivity(self, ChildActivity);
-			return ChildActivity == null;
-		}
-
-		/// <summary>
-		/// Called every tick to run activity logic. Returns false if the activity should
-		/// remain active, or true if it is complete. Cancelled activities must ensure they
-		/// return the actor to a consistent state before returning true.
-		///
-		/// Child activities can be queued using QueueChild, and these will be ticked
-		/// instead of the parent while they are active. Activities that need to run logic
-		/// in parallel with child activities should set ChildHasPriority to false and
-		/// manually call TickChildren.
-		///
-		/// Queuing one or more child activities and returning true is valid, and causes
-		/// the activity to be completed immediately (without ticking again) once the
-		/// children have completed.
-		/// </summary>
-		public virtual bool Tick(Actor self)
-		{
-			return true;
-		}
-
-		/// <summary>
-		/// Runs once immediately before the first Tick() execution.
-		/// </summary>
-		protected virtual void OnFirstRun(Actor self) { }
-
-		/// <summary>
-		/// Runs once immediately after the last Tick() execution.
-		/// </summary>
-		protected virtual void OnLastRun(Actor self) { }
-
-		/// <summary>
-		/// Runs once on Actor.Dispose() (through OnActorDisposeOuter) and can be used to perform activity clean-up on actor death/disposal,
-		/// for example by force-triggering OnLastRun (which would otherwise be skipped).
-		/// </summary>
-		protected virtual void OnActorDispose(Actor self) { }
-
-		/// <summary>
-		/// Runs once on Actor.Dispose().
-		/// Main purpose is to ensure ChildActivity.OnActorDispose runs as well (which isn't otherwise accessible due to protection level).
-		/// </summary>
-		internal void OnActorDisposeOuter(Actor self)
-		{
-			if (ChildActivity != null)
-				ChildActivity.OnActorDisposeOuter(self);
-
-			OnActorDispose(self);
-		}
-
-		public virtual void Cancel(Actor self, bool keepQueue = false)
-		{
-			if (!keepQueue)
-				NextActivity = null;
-
-			if (!IsInterruptible)
-				return;
-
-			if (ChildActivity != null)
-				ChildActivity.Cancel(self);
-
-			State = ActivityState.Canceling;
-		}
-
-		public void Queue(Activity activity)
+		public virtual void Queue(Activity activity)
 		{
 			if (NextActivity != null)
 				NextActivity.Queue(activity);
@@ -180,75 +36,20 @@ namespace OpenRA.Activities
 				NextActivity = activity;
 		}

-		public void QueueChild(Activity activity)
-		{
-			if (ChildActivity != null)
-				ChildActivity.Queue(activity);
-			else
-				ChildActivity = activity;
-		}
-
-		/// <summary>
-		/// Prints the activity tree, starting from the top or optionally from a given origin.
-		///
-		/// Call this method from any place that's called during a tick, such as the Tick() method itself or
-		/// the Before(First|Last)Run() methods. The origin activity will be marked in the output.
-		/// </summary>
-		/// <param name="self">The actor performing this activity.</param>
-		/// <param name="origin">Activity from which to start traversing, and which to mark. If null, mark the calling activity, and start traversal from the top.</param>
-		/// <param name="level">Initial level of indentation.</param>
-		protected void PrintActivityTree(Actor self, Activity origin = null, int level = 0)
-		{
-			if (origin == null)
-				self.CurrentActivity.PrintActivityTree(self, this);
-			else
-			{
-				Console.Write(new string(' ', level * 2));
-				if (origin == this)
-					Console.Write("*");
-
-				Console.WriteLine(GetType().ToString().Split('.').Last());
-
-				if (ChildActivity != null)
-					ChildActivity.PrintActivityTree(self, origin, level + 1);
-
-				if (NextActivity != null)
-					NextActivity.PrintActivityTree(self, origin, level);
-			}
-		}
-
 		public virtual IEnumerable<Target> GetTargets(Actor self)
 		{
 			yield break;
 		}
+	}

-		public virtual IEnumerable<TargetLineNode> TargetLineNodes(Actor self)
+	public static class ActivityExts
+	{
+		public static IEnumerable<Target> GetTargetQueue(this Actor self)
 		{
-			yield break;
-		}
-
-		public IEnumerable<string> DebugLabelComponents()
-		{
-			var act = this;
-			while (act != null)
-			{
-				yield return act.GetType().Name;
-				act = act.ChildActivity;
-			}
-		}
-
-		public IEnumerable<T> ActivitiesImplementing<T>(bool includeChildren = true) where T : IActivityInterface
-		{
-			if (includeChildren && ChildActivity != null)
-				foreach (var a in ChildActivity.ActivitiesImplementing<T>())
-					yield return a;
-
-			if (this is T)
-				yield return (T)(object)this;
-
-			if (NextActivity != null)
-				foreach (var a in NextActivity.ActivitiesImplementing<T>())
-					yield return a;
+			return self.GetCurrentActivity()
+				.Iterate(u => u.NextActivity)
+				.TakeWhile(u => u != null)
+				.SelectMany(u => u.GetTargets(self));
 		}
 	}
 }
--- a/OpenRA.Game/Activities/CallFunc.cs
+++ b/OpenRA.Game/Activities/CallFunc.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -16,18 +16,25 @@ namespace OpenRA.Activities
 	public class CallFunc : Activity
 	{
 		public CallFunc(Action a) { this.a = a; }
-		public CallFunc(Action a, bool interruptible)
+		public CallFunc(Action a, bool interruptable)
 		{
 			this.a = a;
-			IsInterruptible = interruptible;
+			this.interruptable = interruptable;
 		}

 		Action a;
+		bool interruptable;

-		public override bool Tick(Actor self)
+		public override Activity Tick(Actor self)
 		{
 			if (a != null) a();
-			return true;
+			return NextActivity;
+		}
+
+		public override void Cancel(Actor self)
+		{
+			if (interruptable)
+				base.Cancel(self);
 		}
 	}
 }
--- a/OpenRA.Game/Actor.cs
+++ b/OpenRA.Game/Actor.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,6 +11,7 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
 using Eluant;
 using Eluant.ObjectBinding;
@@ -27,9 +28,8 @@ namespace OpenRA
 		internal struct SyncHash
 		{
 			public readonly ISync Trait;
-			readonly Func<object, int> hashFunction;
-			public SyncHash(ISync trait) { Trait = trait; hashFunction = Sync.GetHashFunction(trait); }
-			public int Hash() { return hashFunction(Trait); }
+			public readonly int Hash;
+			public SyncHash(ISync trait, int hash) { Trait = trait; Hash = hash; }
 		}

 		public readonly ActorInfo Info;
@@ -38,22 +38,23 @@ namespace OpenRA

 		public readonly uint ActorID;

-		public Player Owner { get; internal set; }
+		public Player Owner { get; set; }

 		public bool IsInWorld { get; internal set; }
-		public bool WillDispose { get; private set; }
 		public bool Disposed { get; private set; }

-		public Activity CurrentActivity { get; private set; }
+		Activity currentActivity;

+		public Group Group;
 		public int Generation;
-		public Actor ReplacedByActor;

+		public Rectangle Bounds { get; private set; }
+		public Rectangle VisualBounds { get; private set; }
 		public IEffectiveOwner EffectiveOwner { get; private set; }
 		public IOccupySpace OccupiesSpace { get; private set; }
 		public ITargetable[] Targetables { get; private set; }

-		public bool IsIdle { get { return CurrentActivity == null; } }
+		public bool IsIdle { get { return currentActivity == null; } }
 		public bool IsDead { get { return Disposed || (health != null && health.IsDead); } }

 		public CPos Location { get { return OccupiesSpace.TopLeft; } }
@@ -69,19 +70,15 @@ namespace OpenRA
 			}
 		}

-		internal SyncHash[] SyncHashes { get; private set; }
+		internal IEnumerable<SyncHash> SyncHashes { get; private set; }

 		readonly IFacing facing;
 		readonly IHealth health;
 		readonly IRenderModifier[] renderModifiers;
 		readonly IRender[] renders;
-		readonly IMouseBounds[] mouseBounds;
+		readonly IDisable[] disables;
 		readonly IVisibilityModifier[] visibilityModifiers;
 		readonly IDefaultVisibility defaultVisibility;
-		readonly INotifyBecomingIdle[] becomingIdles;
-		readonly INotifyIdle[] tickIdles;
-		readonly ITargetablePositions[] targetablePositions;
-		WPos[] staticTargetablePositions;

 		internal Actor(World world, string name, TypeDictionary initDict)
 		{
@@ -114,48 +111,61 @@ namespace OpenRA
 			// PERF: Cache all these traits as soon as the actor is created. This is a fairly cheap one-off cost per
 			// actor that allows us to provide some fast implementations of commonly used methods that are relied on by
 			// performance-sensitive parts of the core game engine, such as pathfinding, visibility and rendering.
+			Bounds = DetermineBounds();
+			VisualBounds = DetermineVisualBounds();
 			EffectiveOwner = TraitOrDefault<IEffectiveOwner>();
 			facing = TraitOrDefault<IFacing>();
 			health = TraitOrDefault<IHealth>();
 			renderModifiers = TraitsImplementing<IRenderModifier>().ToArray();
 			renders = TraitsImplementing<IRender>().ToArray();
-			mouseBounds = TraitsImplementing<IMouseBounds>().ToArray();
+			disables = TraitsImplementing<IDisable>().ToArray();
 			visibilityModifiers = TraitsImplementing<IVisibilityModifier>().ToArray();
 			defaultVisibility = Trait<IDefaultVisibility>();
-			becomingIdles = TraitsImplementing<INotifyBecomingIdle>().ToArray();
-			tickIdles = TraitsImplementing<INotifyIdle>().ToArray();
 			Targetables = TraitsImplementing<ITargetable>().ToArray();
-			targetablePositions = TraitsImplementing<ITargetablePositions>().ToArray();
-			world.AddFrameEndTask(w =>
-			{
-				// Caching this in a AddFrameEndTask, because trait construction order might cause problems if done directly at creation time.
-				// All actors that can move or teleport should have IPositionable, if not it's pretty safe to assume the actor is completely immobile and
-				// all targetable positions can be cached if all ITargetablePositions have no conditional requirements.
-				if (!Info.HasTraitInfo<IPositionableInfo>() && targetablePositions.Any() && targetablePositions.All(tp => tp.AlwaysEnabled))
-					staticTargetablePositions = targetablePositions.SelectMany(tp => tp.TargetablePositions(this)).ToArray();
-			});

-			SyncHashes = TraitsImplementing<ISync>().Select(sync => new SyncHash(sync)).ToArray();
+			SyncHashes =
+				TraitsImplementing<ISync>()
+				.Select(sync => Pair.New(sync, Sync.GetHashFunction(sync)))
+				.ToArray()
+				.Select(pair => new SyncHash(pair.First, pair.Second(pair.First)));
+		}
+
+		Rectangle DetermineBounds()
+		{
+			var si = Info.TraitInfoOrDefault<SelectableInfo>();
+			var size = (si != null && si.Bounds != null) ? new int2(si.Bounds[0], si.Bounds[1]) :
+				TraitsImplementing<IAutoSelectionSize>().Select(x => x.SelectionSize(this)).FirstOrDefault();
+
+			var offset = -size / 2;
+			if (si != null && si.Bounds != null && si.Bounds.Length > 2)
+				offset += new int2(si.Bounds[2], si.Bounds[3]);
+
+			return new Rectangle(offset.X, offset.Y, size.X, size.Y);
+		}
+
+		Rectangle DetermineVisualBounds()
+		{
+			var sd = Info.TraitInfoOrDefault<ISelectionDecorationsInfo>();
+			if (sd == null || sd.SelectionBoxBounds == null)
+				return Bounds;
+
+			var size = new int2(sd.SelectionBoxBounds[0], sd.SelectionBoxBounds[1]);
+
+			var offset = -size / 2;
+			if (sd.SelectionBoxBounds.Length > 2)
+				offset += new int2(sd.SelectionBoxBounds[2], sd.SelectionBoxBounds[3]);
+
+			return new Rectangle(offset.X, offset.Y, size.X, size.Y);
 		}

 		public void Tick()
 		{
 			var wasIdle = IsIdle;
-			CurrentActivity = ActivityUtils.RunActivity(this, CurrentActivity);
+			currentActivity = ActivityUtils.RunActivity(this, currentActivity);

 			if (!wasIdle && IsIdle)
-			{
-				foreach (var n in becomingIdles)
+				foreach (var n in TraitsImplementing<INotifyBecomingIdle>())
 					n.OnBecomingIdle(this);
-
-				// If IsIdle is true, it means the last CurrentActivity.Tick returned null.
-				// If a next activity has been queued via OnBecomingIdle, we need to start running it now,
-				// to avoid an 'empty' null tick where the actor will (visibly, if moving) do nothing.
-				CurrentActivity = ActivityUtils.RunActivity(this, CurrentActivity);
-			}
-			else if (wasIdle)
-				foreach (var tickIdle in tickIdles)
-					tickIdle.TickIdle(this);
 		}

 		public IEnumerable<IRenderable> Render(WorldRenderer wr)
@@ -181,35 +191,6 @@ namespace OpenRA
 					yield return renderable;
 		}

-		public IEnumerable<Rectangle> ScreenBounds(WorldRenderer wr)
-		{
-			var bounds = Bounds(wr);
-			foreach (var modifier in renderModifiers)
-				bounds = modifier.ModifyScreenBounds(this, wr, bounds);
-			return bounds;
-		}
-
-		IEnumerable<Rectangle> Bounds(WorldRenderer wr)
-		{
-			// PERF: Avoid LINQ. See comments for Renderables
-			foreach (var render in renders)
-				foreach (var r in render.ScreenBounds(this, wr))
-					if (!r.IsEmpty)
-						yield return r;
-		}
-
-		public Rectangle MouseBounds(WorldRenderer wr)
-		{
-			foreach (var mb in mouseBounds)
-			{
-				var bounds = mb.MouseoverBounds(this, wr);
-				if (!bounds.IsEmpty)
-					return bounds;
-			}
-
-			return Rectangle.Empty;
-		}
-
 		public void QueueActivity(bool queued, Activity nextActivity)
 		{
 			if (!queued)
@@ -219,16 +200,21 @@ namespace OpenRA

 		public void QueueActivity(Activity nextActivity)
 		{
-			if (CurrentActivity == null)
-				CurrentActivity = nextActivity;
+			if (currentActivity == null)
+				currentActivity = nextActivity;
 			else
-				CurrentActivity.Queue(nextActivity);
+				currentActivity.Queue(nextActivity);
 		}

 		public void CancelActivity()
 		{
-			if (CurrentActivity != null)
-				CurrentActivity.Cancel(this);
+			if (currentActivity != null)
+				currentActivity.Cancel(this);
+		}
+
+		public Activity GetCurrentActivity()
+		{
+			return currentActivity;
 		}

 		public override int GetHashCode()
@@ -278,14 +264,6 @@ namespace OpenRA

 		public void Dispose()
 		{
-			// If CurrentActivity isn't null, run OnActorDisposeOuter in case some cleanups are needed.
-			// This should be done before the FrameEndTask to avoid dependency issues.
-			if (CurrentActivity != null)
-				CurrentActivity.OnActorDisposeOuter(this);
-
-			// Allow traits/activities to prevent a race condition when they depend on disposing the actor (e.g. Transforms)
-			WillDispose = true;
-
 			World.AddFrameEndTask(w =>
 			{
 				if (Disposed)
@@ -308,36 +286,27 @@ namespace OpenRA
 		// TODO: move elsewhere.
 		public void ChangeOwner(Player newOwner)
 		{
-			World.AddFrameEndTask(_ => ChangeOwnerSync(newOwner));
-		}
+			World.AddFrameEndTask(w =>
+			{
+				if (Disposed)
+					return;

-		/// <summary>
-		/// Change the actors owner without queuing a FrameEndTask.
-		/// This must only be called from inside an existing FrameEndTask.
-		/// </summary>
-		public void ChangeOwnerSync(Player newOwner)
-		{
-			if (Disposed)
-				return;
+				var oldOwner = Owner;
+				var wasInWorld = IsInWorld;

-			var oldOwner = Owner;
-			var wasInWorld = IsInWorld;
+				// momentarily remove from world so the ownership queries don't get confused
+				if (wasInWorld)
+					w.Remove(this);

-			// momentarily remove from world so the ownership queries don't get confused
-			if (wasInWorld)
-				World.Remove(this);
+				Owner = newOwner;
+				Generation++;

-			Owner = newOwner;
-			Generation++;
+				foreach (var t in TraitsImplementing<INotifyOwnerChanged>())
+					t.OnOwnerChanged(this, oldOwner, newOwner);

-			foreach (var t in TraitsImplementing<INotifyOwnerChanged>())
-				t.OnOwnerChanged(this, oldOwner, newOwner);
-
-			foreach (var t in World.WorldActor.TraitsImplementing<INotifyOwnerChanged>())
-				t.OnOwnerChanged(this, oldOwner, newOwner);
-
-			if (wasInWorld)
-				World.Add(this);
+				if (wasInWorld)
+					w.Add(this);
+			});
 		}

 		public DamageState GetDamageState()
@@ -356,12 +325,21 @@ namespace OpenRA
 			health.InflictDamage(this, attacker, damage, false);
 		}

-		public void Kill(Actor attacker, BitSet<DamageType> damageTypes = default(BitSet<DamageType>))
+		public void Kill(Actor attacker)
 		{
 			if (Disposed || health == null)
 				return;

-			health.Kill(this, attacker, damageTypes);
+			health.Kill(this, attacker);
+		}
+
+		public bool IsDisabled()
+		{
+			// PERF: Avoid LINQ.
+			foreach (var disable in disables)
+				if (disable.Disabled)
+					return true;
+			return false;
 		}

 		public bool CanBeViewedByPlayer(Player player)
@@ -374,23 +352,21 @@ namespace OpenRA
 			return defaultVisibility.IsVisible(this, player);
 		}

-		public BitSet<TargetableType> GetAllTargetTypes()
+		public IEnumerable<string> GetAllTargetTypes()
 		{
 			// PERF: Avoid LINQ.
-			var targetTypes = default(BitSet<TargetableType>);
 			foreach (var targetable in Targetables)
-				targetTypes = targetTypes.Union(targetable.TargetTypes);
-			return targetTypes;
+				foreach (var targetType in targetable.TargetTypes)
+					yield return targetType;
 		}

-		public BitSet<TargetableType> GetEnabledTargetTypes()
+		public IEnumerable<string> GetEnabledTargetTypes()
 		{
 			// PERF: Avoid LINQ.
-			var targetTypes = default(BitSet<TargetableType>);
 			foreach (var targetable in Targetables)
 				if (targetable.IsTraitEnabled())
-					targetTypes = targetTypes.Union(targetable.TargetTypes);
-			return targetTypes;
+					foreach (var targetType in targetable.TargetTypes)
+						yield return targetType;
 		}

 		public bool IsTargetableBy(Actor byActor)
@@ -403,18 +379,6 @@ namespace OpenRA
 			return false;
 		}

-		public IEnumerable<WPos> GetTargetablePositions()
-		{
-			if (staticTargetablePositions != null)
-				return staticTargetablePositions;
-
-			var enabledTargetablePositionTraits = targetablePositions.Where(Exts.IsTraitEnabled);
-			if (enabledTargetablePositionTraits.Any())
-				return enabledTargetablePositionTraits.SelectMany(tp => tp.TargetablePositions(this));
-
-			return new[] { CenterPosition };
-		}
-
 		#region Scripting interface

 		Lazy<ScriptActorInterface> luaInterface;
--- a/OpenRA.Game/CPos.cs
+++ b/OpenRA.Game/CPos.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -18,44 +18,27 @@ namespace OpenRA
 {
 	public struct CPos : IScriptBindable, ILuaAdditionBinding, ILuaSubtractionBinding, ILuaEqualityBinding, ILuaTableBinding, IEquatable<CPos>
 	{
-		// Coordinates are packed in a 32 bit signed int
-		// X and Y are 12 bits (signed): -2048...2047
-		// Layer is an unsigned byte
-		// Packing is XXXX XXXX XXXX YYYY YYYY YYYY LLLL LLLL
-		public readonly int Bits;
+		public readonly int X, Y;

-		// X is padded to MSB, so bit shift does the correct sign extension
-		public int X { get { return Bits >> 20; } }
-
-		// Align Y with a short, cast, then shift the rest of the way
-		// The signed short bit shift does the correct sign extension
-		public int Y { get { return ((short)(Bits >> 4)) >> 4; } }
-
-		public byte Layer { get { return (byte)Bits; } }
-
-		public CPos(int bits) { Bits = bits; }
-		public CPos(int x, int y)
-			: this(x, y, 0) { }
-		public CPos(int x, int y, byte layer)
-		{
-			Bits = (x & 0xFFF) << 20 | (y & 0xFFF) << 8 | layer;
-		}
-
-		public static readonly CPos Zero = new CPos(0, 0, 0);
+		public CPos(int x, int y) { X = x; Y = y; }
+		public static readonly CPos Zero = new CPos(0, 0);

 		public static explicit operator CPos(int2 a) { return new CPos(a.X, a.Y); }

-		public static CPos operator +(CVec a, CPos b) { return new CPos(a.X + b.X, a.Y + b.Y, b.Layer); }
-		public static CPos operator +(CPos a, CVec b) { return new CPos(a.X + b.X, a.Y + b.Y, a.Layer); }
-		public static CPos operator -(CPos a, CVec b) { return new CPos(a.X - b.X, a.Y - b.Y, a.Layer); }
+		public static CPos operator +(CVec a, CPos b) { return new CPos(a.X + b.X, a.Y + b.Y); }
+		public static CPos operator +(CPos a, CVec b) { return new CPos(a.X + b.X, a.Y + b.Y); }
+		public static CPos operator -(CPos a, CVec b) { return new CPos(a.X - b.X, a.Y - b.Y); }
 		public static CVec operator -(CPos a, CPos b) { return new CVec(a.X - b.X, a.Y - b.Y); }

-		public static bool operator ==(CPos me, CPos other) { return me.Bits == other.Bits; }
+		public static bool operator ==(CPos me, CPos other) { return me.X == other.X && me.Y == other.Y; }
 		public static bool operator !=(CPos me, CPos other) { return !(me == other); }

-		public override int GetHashCode() { return Bits.GetHashCode(); }
+		public static CPos Max(CPos a, CPos b) { return new CPos(Math.Max(a.X, b.X), Math.Max(a.Y, b.Y)); }
+		public static CPos Min(CPos a, CPos b) { return new CPos(Math.Min(a.X, b.X), Math.Min(a.Y, b.Y)); }

-		public bool Equals(CPos other) { return Bits == other.Bits; }
+		public override int GetHashCode() { return X.GetHashCode() ^ Y.GetHashCode(); }
+
+		public bool Equals(CPos other) { return X == other.X && Y == other.Y; }
 		public override bool Equals(object obj) { return obj is CPos && Equals((CPos)obj); }

 		public override string ToString() { return X + "," + Y; }
@@ -100,24 +83,11 @@ namespace OpenRA
 		public LuaValue Subtract(LuaRuntime runtime, LuaValue left, LuaValue right)
 		{
 			CPos a;
-			var rightType = right.WrappedClrType();
-			if (!left.TryGetClrValue(out a))
-				throw new LuaException("Attempted to call CPos.Subtract(CPos, (CPos|CVec)) with invalid arguments ({0}, {1})".F(left.WrappedClrType().Name, rightType.Name));
+			CVec b;
+			if (!left.TryGetClrValue(out a) || !right.TryGetClrValue(out b))
+				throw new LuaException("Attempted to call CPos.Subtract(CPos, CVec) with invalid arguments ({0}, {1})".F(left.WrappedClrType().Name, right.WrappedClrType().Name));

-			if (rightType == typeof(CPos))
-			{
-				CPos b;
-				right.TryGetClrValue(out b);
-				return new LuaCustomClrObject(a - b);
-			}
-			else if (rightType == typeof(CVec))
-			{
-				CVec b;
-				right.TryGetClrValue(out b);
-				return new LuaCustomClrObject(a - b);
-			}
-
-			throw new LuaException("Attempted to call CPos.Subtract(CPos, (CPos|CVec)) with invalid arguments ({0}, {1})".F(left.WrappedClrType().Name, rightType.Name));
+			return new LuaCustomClrObject(a - b);
 		}

 		public LuaValue Equals(LuaRuntime runtime, LuaValue left, LuaValue right)
@@ -137,7 +107,6 @@ namespace OpenRA
 				{
 					case "X": return X;
 					case "Y": return Y;
-					case "Layer": return Layer;
 					default: throw new LuaException("CPos does not define a member '{0}'".F(key));
 				}
 			}
@@ -150,4 +119,4 @@ namespace OpenRA

 		#endregion
 	}
-}
+}
--- a/OpenRA.Game/CVec.cs
+++ b/OpenRA.Game/CVec.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,9 +10,9 @@
 #endregion

 using System;
+using System.Drawing;
 using Eluant;
 using Eluant.ObjectBinding;
-using OpenRA.Primitives;
 using OpenRA.Scripting;

 namespace OpenRA
--- a/OpenRA.Game/CacheStorage.cs
+++ b/OpenRA.Game/CacheStorage.cs
@@ -1,6 +1,6 @@
-#region Copyright & License Information
+#region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -17,4 +17,4 @@ namespace OpenRA
 		void Store(string key, T data);
 		T Retrieve(string key);
 	}
-}
+}
--- a/OpenRA.Game/CryptoUtil.cs
+++ b/OpenRA.Game/CryptoUtil.cs
@@ -1,261 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System;
-using System.IO;
-using System.Linq;
-using System.Security.Cryptography;
-using System.Text;
-
-namespace OpenRA
-{
-	public static class CryptoUtil
-	{
-		// Fixed byte pattern for the OID header
-		static readonly byte[] OIDHeader = { 0x30, 0xD, 0x6, 0x9, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0xD, 0x1, 0x1, 0x1, 0x5, 0x0 };
-
-		public static string PublicKeyFingerprint(RSAParameters parameters)
-		{
-			// Public key fingerprint is defined as the SHA1 of the modulus + exponent bytes
-			return SHA1Hash(parameters.Modulus.Append(parameters.Exponent).ToArray());
-		}
-
-		public static string EncodePEMPublicKey(RSAParameters parameters)
-		{
-			var data = Convert.ToBase64String(EncodePublicKey(parameters));
-			var output = new StringBuilder();
-			output.AppendLine("-----BEGIN PUBLIC KEY-----");
-			for (var i = 0; i < data.Length; i += 64)
-				output.AppendLine(data.Substring(i, Math.Min(64, data.Length - i)));
-			output.Append("-----END PUBLIC KEY-----");
-
-			return output.ToString();
-		}
-
-		public static RSAParameters DecodePEMPublicKey(string key)
-		{
-			try
-			{
-				// Reconstruct original key data
-				var lines = key.Split('\n');
-				var data = Convert.FromBase64String(lines.Skip(1).Take(lines.Length - 2).JoinWith(""));
-
-				// Pull the modulus and exponent bytes out of the ASN.1 tree
-				// Expect this to blow up if the key is not correctly formatted
-				using (var s = new MemoryStream(data))
-				{
-					// SEQUENCE
-					s.ReadByte();
-					ReadTLVLength(s);
-
-					// SEQUENCE -> fixed header junk
-					s.ReadByte();
-					var headerLength = ReadTLVLength(s);
-					s.Position += headerLength;
-
-					// SEQUENCE -> BIT_STRING
-					s.ReadByte();
-					ReadTLVLength(s);
-					s.ReadByte();
-
-					// SEQUENCE -> BIT_STRING -> SEQUENCE
-					s.ReadByte();
-					ReadTLVLength(s);
-
-					// SEQUENCE -> BIT_STRING -> SEQUENCE -> INTEGER (modulus)
-					s.ReadByte();
-					var modulusLength = ReadTLVLength(s);
-					s.ReadByte();
-					var modulus = s.ReadBytes(modulusLength - 1);
-
-					// SEQUENCE -> BIT_STRING -> SEQUENCE -> INTEGER (exponent)
-					s.ReadByte();
-					var exponentLength = ReadTLVLength(s);
-					s.ReadByte();
-					var exponent = s.ReadBytes(exponentLength - 1);
-
-					return new RSAParameters
-					{
-						Modulus = modulus,
-						Exponent = exponent
-					};
-				}
-			}
-			catch (Exception e)
-			{
-				throw new InvalidDataException("Invalid PEM public key", e);
-			}
-		}
-
-		static byte[] EncodePublicKey(RSAParameters parameters)
-		{
-			using (var stream = new MemoryStream())
-			{
-				var writer = new BinaryWriter(stream);
-
-				var modExpLength = TripletFullLength(parameters.Modulus.Length + 1) + TripletFullLength(parameters.Exponent.Length + 1);
-				var bitStringLength = TripletFullLength(modExpLength + 1);
-				var sequenceLength = TripletFullLength(bitStringLength + OIDHeader.Length);
-
-				// SEQUENCE
-				writer.Write((byte)0x30);
-				WriteTLVLength(writer, sequenceLength);
-
-				// SEQUENCE -> fixed header junk
-				writer.Write(OIDHeader);
-
-				// SEQUENCE -> BIT_STRING
-				writer.Write((byte)0x03);
-				WriteTLVLength(writer, bitStringLength);
-				writer.Write((byte)0x00);
-
-				// SEQUENCE -> BIT_STRING -> SEQUENCE
-				writer.Write((byte)0x30);
-				WriteTLVLength(writer, modExpLength);
-
-				// SEQUENCE -> BIT_STRING -> SEQUENCE -> INTEGER
-				// Modulus is padded with a zero to avoid issues with the sign bit
-				writer.Write((byte)0x02);
-				WriteTLVLength(writer, parameters.Modulus.Length + 1);
-				writer.Write((byte)0);
-				writer.Write(parameters.Modulus);
-
-				// SEQUENCE -> BIT_STRING -> SEQUENCE -> INTEGER
-				// Exponent is padded with a zero to avoid issues with the sign bit
-				writer.Write((byte)0x02);
-				WriteTLVLength(writer, parameters.Exponent.Length + 1);
-				writer.Write((byte)0);
-				writer.Write(parameters.Exponent);
-
-				return stream.ToArray();
-			}
-		}
-
-		static void WriteTLVLength(BinaryWriter writer, int length)
-		{
-			if (length < 0x80)
-			{
-				// Length < 128 is stored in a single byte
-				writer.Write((byte)length);
-			}
-			else
-			{
-				// If 128 <= length < 256**128 first byte encodes number of bytes required to hold the length
-				// High-bit is set as a flag to use this long-form encoding
-				var lengthBytes = BitConverter.GetBytes(length).Reverse().SkipWhile(b => b == 0).ToArray();
-				writer.Write((byte)(0x80 | lengthBytes.Length));
-				writer.Write(lengthBytes);
-			}
-		}
-
-		static int ReadTLVLength(Stream s)
-		{
-			var length = s.ReadByte();
-			if (length < 0x80)
-				return length;
-
-			var data = new byte[4];
-			s.ReadBytes(data, 0, Math.Min(length & 0x7F, 4));
-			return BitConverter.ToInt32(data.ToArray(), 0);
-		}
-
-		static int TripletFullLength(int dataLength)
-		{
-			if (dataLength < 0x80)
-				return 2 + dataLength;
-
-			return 2 + dataLength + BitConverter.GetBytes(dataLength).Reverse().SkipWhile(b => b == 0).Count();
-		}
-
-		public static string DecryptString(RSAParameters parameters, string data)
-		{
-			try
-			{
-				using (var rsa = new RSACryptoServiceProvider())
-				{
-					rsa.ImportParameters(parameters);
-					return Encoding.UTF8.GetString(rsa.Decrypt(Convert.FromBase64String(data), false));
-				}
-			}
-			catch (Exception e)
-			{
-				Log.Write("debug", "Failed to decrypt string with exception: {0}", e);
-				Console.WriteLine("String decryption failed: {0}", e);
-				return null;
-			}
-		}
-
-		public static string Sign(RSAParameters parameters, string data)
-		{
-			return Sign(parameters, Encoding.UTF8.GetBytes(data));
-		}
-
-		public static string Sign(RSAParameters parameters, byte[] data)
-		{
-			try
-			{
-				using (var rsa = new RSACryptoServiceProvider())
-				{
-					rsa.ImportParameters(parameters);
-					using (var csp = SHA1.Create())
-						return Convert.ToBase64String(rsa.SignHash(csp.ComputeHash(data), CryptoConfig.MapNameToOID("SHA1")));
-				}
-			}
-			catch (Exception e)
-			{
-				Log.Write("debug", "Failed to sign string with exception: {0}", e);
-				Console.WriteLine("String signing failed: {0}", e);
-				return null;
-			}
-		}
-
-		public static bool VerifySignature(RSAParameters parameters, string data, string signature)
-		{
-			return VerifySignature(parameters, Encoding.UTF8.GetBytes(data), signature);
-		}
-
-		public static bool VerifySignature(RSAParameters parameters, byte[] data, string signature)
-		{
-			try
-			{
-				using (var rsa = new RSACryptoServiceProvider())
-				{
-					rsa.ImportParameters(parameters);
-					using (var csp = SHA1.Create())
-						return rsa.VerifyHash(csp.ComputeHash(data), CryptoConfig.MapNameToOID("SHA1"), Convert.FromBase64String(signature));
-				}
-			}
-			catch (Exception e)
-			{
-				Log.Write("debug", "Failed to verify signature with exception: {0}", e);
-				Console.WriteLine("Signature validation failed: {0}", e);
-				return false;
-			}
-		}
-
-		public static string SHA1Hash(Stream data)
-		{
-			using (var csp = SHA1.Create())
-				return new string(csp.ComputeHash(data).SelectMany(a => a.ToString("x2")).ToArray());
-		}
-
-		public static string SHA1Hash(byte[] data)
-		{
-			using (var csp = SHA1.Create())
-				return new string(csp.ComputeHash(data).SelectMany(a => a.ToString("x2")).ToArray());
-		}
-
-		public static string SHA1Hash(string data)
-		{
-			return SHA1Hash(Encoding.UTF8.GetBytes(data));
-		}
-	}
-}
--- a/OpenRA.Game/Download.cs
+++ b/OpenRA.Game/Download.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -43,19 +43,8 @@ namespace OpenRA
 			}
 		}

-		void EnableTLS12OnWindows()
-		{
-			// Enable TLS 1.2 on Windows: .NET 4.7 on Windows 10 only supports obsolete protocols by default
-			// SecurityProtocolType.Tls12 is not defined in the .NET 4.5 reference dlls used by mono,
-			// so we must use the enum's constant value directly
-			if (Platform.CurrentPlatform == PlatformType.Windows)
-				ServicePointManager.SecurityProtocol |= (SecurityProtocolType)3072;
-		}
-
 		public Download(string url, string path, Action<DownloadProgressChangedEventArgs> onProgress, Action<AsyncCompletedEventArgs> onComplete)
 		{
-			EnableTLS12OnWindows();
-
 			lock (syncObject)
 			{
 				wc = new WebClient { Proxy = null };
@@ -67,8 +56,6 @@ namespace OpenRA

 		public Download(string url, Action<DownloadProgressChangedEventArgs> onProgress, Action<DownloadDataCompletedEventArgs> onComplete)
 		{
-			EnableTLS12OnWindows();
-
 			lock (syncObject)
 			{
 				wc = new WebClient { Proxy = null };
--- a/OpenRA.Game/Effects/AsyncAction.cs
+++ b/OpenRA.Game/Effects/AsyncAction.cs
@@ -1,6 +1,6 @@
-#region Copyright & License Information
+#region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/Effects/DelayedAction.cs
+++ b/OpenRA.Game/Effects/DelayedAction.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/Effects/DelayedImpact.cs
+++ b/OpenRA.Game/Effects/DelayedImpact.cs
@@ -1,45 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System.Collections.Generic;
-using OpenRA.Graphics;
-using OpenRA.Traits;
-
-namespace OpenRA.Effects
-{
-	public class DelayedImpact : IEffect
-	{
-		readonly Target target;
-		readonly Actor firedBy;
-		readonly IEnumerable<int> damageModifiers;
-		readonly IWarhead wh;
-
-		int delay;
-
-		public DelayedImpact(int delay, IWarhead wh, Target target, Actor firedBy, IEnumerable<int> damageModifiers)
-		{
-			this.wh = wh;
-			this.delay = delay;
-
-			this.target = target;
-			this.firedBy = firedBy;
-			this.damageModifiers = damageModifiers;
-		}
-
-		public void Tick(World world)
-		{
-			if (--delay <= 0)
-				world.AddFrameEndTask(w => { w.Remove(this); wh.DoImpact(target, firedBy, damageModifiers); });
-		}
-
-		public IEnumerable<IRenderable> Render(WorldRenderer wr) { yield break; }
-	}
-}
--- a/OpenRA.Game/Effects/IEffect.cs
+++ b/OpenRA.Game/Effects/IEffect.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -20,8 +20,5 @@ namespace OpenRA.Effects
 		IEnumerable<IRenderable> Render(WorldRenderer r);
 	}

-	// Identifier interface for effects that are added to ScreenMap
-	public interface ISpatiallyPartitionable { }
-
 	public interface IEffectAboveShroud { IEnumerable<IRenderable> RenderAboveShroud(WorldRenderer wr); }
 }
--- a/OpenRA.Game/ExternalMods.cs
+++ b/OpenRA.Game/ExternalMods.cs
@@ -1,243 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using OpenRA.FileFormats;
-using OpenRA.Graphics;
-
-namespace OpenRA
-{
-	[Flags]
-	enum ModRegistration { User = 1, System = 2 }
-
-	public class ExternalMod
-	{
-		public readonly string Id;
-		public readonly string Version;
-		public readonly string Title;
-		public readonly string LaunchPath;
-		public readonly string[] LaunchArgs;
-		public Sprite Icon { get; internal set; }
-
-		public static string MakeKey(Manifest mod) { return MakeKey(mod.Id, mod.Metadata.Version); }
-		public static string MakeKey(ExternalMod mod) { return MakeKey(mod.Id, mod.Version); }
-		public static string MakeKey(string modId, string modVersion) { return modId + "-" + modVersion; }
-	}
-
-	public class ExternalMods : IReadOnlyDictionary<string, ExternalMod>
-	{
-		readonly Dictionary<string, ExternalMod> mods = new Dictionary<string, ExternalMod>();
-		readonly SheetBuilder sheetBuilder;
-
-		public ExternalMods()
-		{
-			sheetBuilder = new SheetBuilder(SheetType.BGRA, 256);
-
-			// If the player has defined a local support directory (in the game directory)
-			// then this will override both the regular and system support dirs
-			var sources = new[] { Platform.SystemSupportDir, Platform.SupportDir };
-			foreach (var source in sources.Distinct())
-			{
-				var metadataPath = Path.Combine(source, "ModMetadata");
-				if (!Directory.Exists(metadataPath))
-					continue;
-
-				foreach (var path in Directory.GetFiles(metadataPath, "*.yaml"))
-				{
-					try
-					{
-						var yaml = MiniYaml.FromStream(File.OpenRead(path), path).First().Value;
-						LoadMod(yaml, path);
-					}
-					catch (Exception e)
-					{
-						Log.Write("debug", "Failed to parse mod metadata file '{0}'", path);
-						Log.Write("debug", e.ToString());
-					}
-				}
-			}
-		}
-
-		void LoadMod(MiniYaml yaml, string path = null, bool forceRegistration = false)
-		{
-			var mod = FieldLoader.Load<ExternalMod>(yaml);
-			var iconNode = yaml.Nodes.FirstOrDefault(n => n.Key == "Icon");
-			if (iconNode != null && !string.IsNullOrEmpty(iconNode.Value.Value))
-			{
-				using (var stream = new MemoryStream(Convert.FromBase64String(iconNode.Value.Value)))
-					mod.Icon = sheetBuilder.Add(new Png(stream));
-			}
-
-			// Avoid possibly overwriting a valid mod with an obviously bogus one
-			var key = ExternalMod.MakeKey(mod);
-			if ((forceRegistration || File.Exists(mod.LaunchPath)) && (path == null || Path.GetFileNameWithoutExtension(path) == key))
-				mods[key] = mod;
-		}
-
-		internal void Register(Manifest mod, string launchPath, ModRegistration registration)
-		{
-			if (mod.Metadata.Hidden)
-				return;
-
-			var iconData = "";
-			using (var stream = mod.Package.GetStream("icon.png"))
-				if (stream != null)
-					iconData = Convert.ToBase64String(stream.ReadAllBytes());
-
-			var key = ExternalMod.MakeKey(mod);
-			var yaml = new List<MiniYamlNode>()
-			{
-				new MiniYamlNode("Registration", new MiniYaml("", new List<MiniYamlNode>()
-				{
-					new MiniYamlNode("Id", mod.Id),
-					new MiniYamlNode("Version", mod.Metadata.Version),
-					new MiniYamlNode("Title", mod.Metadata.Title),
-					new MiniYamlNode("Icon", iconData),
-					new MiniYamlNode("LaunchPath", launchPath),
-					new MiniYamlNode("LaunchArgs", "Game.Mod=" + mod.Id)
-				}))
-			};
-
-			var sources = new List<string>();
-			if (registration.HasFlag(ModRegistration.System))
-				sources.Add(Platform.SystemSupportDir);
-
-			if (registration.HasFlag(ModRegistration.User))
-				sources.Add(Platform.SupportDir);
-
-			// Make sure the mod is available for this session, even if saving it fails
-			LoadMod(yaml.First().Value, forceRegistration: true);
-
-			foreach (var source in sources.Distinct())
-			{
-				var metadataPath = Path.Combine(source, "ModMetadata");
-
-				try
-				{
-					Directory.CreateDirectory(metadataPath);
-					File.WriteAllLines(Path.Combine(metadataPath, key + ".yaml"), yaml.ToLines().ToArray());
-				}
-				catch (Exception e)
-				{
-					Log.Write("debug", "Failed to register current mod metadata");
-					Log.Write("debug", e.ToString());
-				}
-			}
-		}
-
-		/// <summary>
-		/// Removes invalid mod registrations:
-		/// * LaunchPath no longer exists
-		/// * LaunchPath and mod id matches the active mod, but the version is different
-		/// * Filename doesn't match internal key
-		/// * Fails to parse as a mod registration
-		/// </summary>
-		internal void ClearInvalidRegistrations(ExternalMod activeMod, ModRegistration registration)
-		{
-			var sources = new List<string>();
-			if (registration.HasFlag(ModRegistration.System))
-				sources.Add(Platform.SystemSupportDir);
-
-			if (registration.HasFlag(ModRegistration.User))
-				sources.Add(Platform.SupportDir);
-
-			var activeModKey = ExternalMod.MakeKey(activeMod);
-			foreach (var source in sources.Distinct())
-			{
-				var metadataPath = Path.Combine(source, "ModMetadata");
-				if (!Directory.Exists(metadataPath))
-					continue;
-
-				foreach (var path in Directory.GetFiles(metadataPath, "*.yaml"))
-				{
-					string modKey = null;
-					try
-					{
-						var yaml = MiniYaml.FromStream(File.OpenRead(path), path).First().Value;
-						var m = FieldLoader.Load<ExternalMod>(yaml);
-						modKey = ExternalMod.MakeKey(m);
-
-						// Continue to the next entry if it is the active mod (even if the LaunchPath is bogus)
-						if (modKey == activeModKey)
-							continue;
-
-						// Continue to the next entry if this one is valid
-						if (File.Exists(m.LaunchPath) && Path.GetFileNameWithoutExtension(path) == modKey &&
-							!(activeMod != null && m.LaunchPath == activeMod.LaunchPath && m.Id == activeMod.Id && m.Version != activeMod.Version))
-							continue;
-					}
-					catch (Exception e)
-					{
-						Log.Write("debug", "Failed to parse mod metadata file '{0}'", path);
-						Log.Write("debug", e.ToString());
-					}
-
-					// Remove from the ingame mod switcher
-					if (Path.GetFileNameWithoutExtension(path) == modKey)
-						mods.Remove(modKey);
-
-					// Remove stale or corrupted metadata
-					try
-					{
-						File.Delete(path);
-						Log.Write("debug", "Removed invalid mod metadata file '{0}'", path);
-					}
-					catch (Exception e)
-					{
-						Log.Write("debug", "Failed to remove mod metadata file '{0}'", path);
-						Log.Write("debug", e.ToString());
-					}
-				}
-			}
-		}
-
-		internal void Unregister(Manifest mod, ModRegistration registration)
-		{
-			var sources = new List<string>();
-			if (registration.HasFlag(ModRegistration.System))
-				sources.Add(Platform.SystemSupportDir);
-
-			if (registration.HasFlag(ModRegistration.User))
-				sources.Add(Platform.SupportDir);
-
-			var key = ExternalMod.MakeKey(mod);
-			mods.Remove(key);
-
-			foreach (var source in sources.Distinct())
-			{
-				var path = Path.Combine(source, "ModMetadata", key + ".yaml");
-				try
-				{
-					if (File.Exists(path))
-						File.Delete(path);
-				}
-				catch (Exception e)
-				{
-					Log.Write("debug", "Failed to remove mod metadata file '{0}'", path);
-					Log.Write("debug", e.ToString());
-				}
-			}
-		}
-
-		public ExternalMod this[string key] { get { return mods[key]; } }
-		public int Count { get { return mods.Count; } }
-		public ICollection<string> Keys { get { return mods.Keys; } }
-		public ICollection<ExternalMod> Values { get { return mods.Values; } }
-		public bool ContainsKey(string key) { return mods.ContainsKey(key); }
-		public IEnumerator<KeyValuePair<string, ExternalMod>> GetEnumerator() { return mods.GetEnumerator(); }
-		public bool TryGetValue(string key, out ExternalMod value) { return mods.TryGetValue(key, out value); }
-		IEnumerator IEnumerable.GetEnumerator() { return mods.GetEnumerator(); }
-	}
-}
--- a/OpenRA.Game/Exts.cs
+++ b/OpenRA.Game/Exts.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,10 +11,11 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.Globalization;
 using System.Linq;
 using System.Reflection;
-using OpenRA.Primitives;
 using OpenRA.Support;
 using OpenRA.Traits;

@@ -78,6 +79,16 @@ namespace OpenRA
 				return val;
 		}

+		public static bool Contains(this Rectangle r, int2 p)
+		{
+			return r.Contains(p.ToPoint());
+		}
+
+		public static bool Contains(this RectangleF r, int2 p)
+		{
+			return r.Contains(p.ToPointF());
+		}
+
 		static int WindingDirectionTest(int2 v0, int2 v1, int2 p)
 		{
 			return (v1.X - v0.X) * (p.Y - v0.Y) - (p.X - v0.X) * (v1.Y - v0.Y);
@@ -164,11 +175,7 @@ namespace OpenRA

 		public static IEnumerable<T> Iterate<T>(this T t, Func<T, T> f)
 		{
-			while (true)
-			{
-				yield return t;
-				t = f(t);
-			}
+			for (;;) { yield return t; t = f(t); }
 		}

 		public static T MinBy<T, U>(this IEnumerable<T> ts, Func<T, U> selector)
@@ -368,10 +375,6 @@ namespace OpenRA
 				var key = keySelector(item);
 				var element = elementSelector(item);

-				// Discard elements with null keys
-				if (!typeof(TKey).IsValueType && key == null)
-					continue;
-
 				// Check for a key conflict:
 				if (d.ContainsKey(key))
 				{
@@ -441,6 +444,27 @@ namespace OpenRA
 			return result;
 		}

+		public static Rectangle Bounds(this Bitmap b) { return new Rectangle(0, 0, b.Width, b.Height); }
+
+		public static Bitmap CloneWith32bbpArgbPixelFormat(this Bitmap original)
+		{
+			// Note: We would use original.Clone(original.Bounds(), PixelFormat.Format32bppArgb)
+			// but this doesn't work on mono.
+			var clone = new Bitmap(original.Width, original.Height, PixelFormat.Format32bppArgb);
+			try
+			{
+				using (var g = System.Drawing.Graphics.FromImage(clone))
+					g.DrawImage(original, original.Bounds());
+			}
+			catch (Exception)
+			{
+				clone.Dispose();
+				throw;
+			}
+
+			return clone;
+		}
+
 		public static int ToBits(this IEnumerable<bool> bits)
 		{
 			var i = 0;
@@ -460,11 +484,6 @@ namespace OpenRA
 			return int.Parse(s, NumberStyles.Integer, NumberFormatInfo.InvariantInfo);
 		}

-		public static byte ParseByte(string s)
-		{
-			return byte.Parse(s, NumberStyles.Integer, NumberFormatInfo.InvariantInfo);
-		}
-
 		public static bool TryParseIntegerInvariant(string s, out int i)
 		{
 			return int.TryParse(s, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out i);
@@ -475,30 +494,14 @@ namespace OpenRA
 			return long.TryParse(s, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out i);
 		}

-		public static bool IsTraitEnabled<T>(this T trait)
+		public static bool IsTraitEnabled(this object trait)
 		{
-			var disabledTrait = trait as IDisabledTrait;
-			return disabledTrait == null || !disabledTrait.IsTraitDisabled;
+			return trait as IDisabledTrait == null || !(trait as IDisabledTrait).IsTraitDisabled;
 		}

-		public static T FirstEnabledTraitOrDefault<T>(this IEnumerable<T> ts)
+		public static bool IsTraitEnabled<T>(T t)
 		{
-			// PERF: Avoid LINQ.
-			foreach (var t in ts)
-				if (t.IsTraitEnabled())
-					return t;
-
-			return default(T);
-		}
-
-		public static T FirstEnabledTraitOrDefault<T>(this T[] ts)
-		{
-			// PERF: Avoid LINQ.
-			foreach (var t in ts)
-				if (t.IsTraitEnabled())
-					return t;
-
-			return default(T);
+			return IsTraitEnabled(t as object);
 		}
 	}

--- a/OpenRA.Game/FieldLoader.cs
+++ b/OpenRA.Game/FieldLoader.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -12,15 +12,15 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.Globalization;
-using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Runtime.Serialization;
 using System.Text.RegularExpressions;
 using OpenRA.Graphics;
 using OpenRA.Primitives;
-using OpenRA.Support;

 namespace OpenRA
 {
@@ -40,8 +40,7 @@ namespace OpenRA
 				}
 			}

-			public MissingFieldsException(string[] missing, string header = null, string headerSingle = null)
-				: base(null)
+			public MissingFieldsException(string[] missing, string header = null, string headerSingle = null) : base(null)
 			{
 				Header = missing.Length > 1 ? header : headerSingle ?? header;
 				Missing = missing;
@@ -70,11 +69,6 @@ namespace OpenRA
 		static readonly ConcurrentCache<MemberInfo, bool> MemberHasTranslateAttribute =
 			new ConcurrentCache<MemberInfo, bool>(member => member.HasAttribute<TranslateAttribute>());

-		static readonly ConcurrentCache<string, BooleanExpression> BooleanExpressionCache =
-			new ConcurrentCache<string, BooleanExpression>(expression => new BooleanExpression(expression));
-		static readonly ConcurrentCache<string, IntegerExpression> IntegerExpressionCache =
-			new ConcurrentCache<string, IntegerExpression>(expression => new IntegerExpression(expression));
-
 		static readonly object TranslationsLock = new object();
 		static Dictionary<string, string> translations;

@@ -229,11 +223,46 @@ namespace OpenRA
 			else if (fieldType == typeof(Color))
 			{
 				Color color;
-				if (value != null && Color.TryParse(value, out color))
+				if (value != null && HSLColor.TryParseRGB(value, out color))
 					return color;

 				return InvalidValueAction(value, fieldType, fieldName);
 			}
+			else if (fieldType == typeof(Color[]))
+			{
+				if (value != null)
+				{
+					var parts = value.Split(',');
+					var colors = new Color[parts.Length];
+
+					for (var i = 0; i < colors.Length; i++)
+						if (!HSLColor.TryParseRGB(parts[i], out colors[i]))
+							return InvalidValueAction(value, fieldType, fieldName);
+
+					return colors;
+				}
+
+				return InvalidValueAction(value, fieldType, fieldName);
+			}
+			else if (fieldType == typeof(HSLColor))
+			{
+				if (value != null)
+				{
+					Color rgb;
+					if (HSLColor.TryParseRGB(value, out rgb))
+						return new HSLColor(rgb);
+
+					// Allow old HSLColor/ColorRamp formats to be parsed as HSLColor
+					var parts = value.Split(',');
+					if (parts.Length == 3 || parts.Length == 4)
+						return new HSLColor(
+							(byte)Exts.ParseIntegerInvariant(parts[0]).Clamp(0, 255),
+							(byte)Exts.ParseIntegerInvariant(parts[1]).Clamp(0, 255),
+							(byte)Exts.ParseIntegerInvariant(parts[2]).Clamp(0, 255));
+				}
+
+				return InvalidValueAction(value, fieldType, fieldName);
+			}
 			else if (fieldType == typeof(Hotkey))
 			{
 				Hotkey res;
@@ -242,10 +271,6 @@ namespace OpenRA

 				return InvalidValueAction(value, fieldType, fieldName);
 			}
-			else if (fieldType == typeof(HotkeyReference))
-			{
-				return Game.ModData.Hotkeys[value];
-			}
 			else if (fieldType == typeof(WDist))
 			{
 				WDist res;
@@ -322,7 +347,7 @@ namespace OpenRA
 					if (parts.Length == 3)
 					{
 						int rr, rp, ry;
-						if (Exts.TryParseIntegerInvariant(parts[0], out rr) && Exts.TryParseIntegerInvariant(parts[1], out rp) && Exts.TryParseIntegerInvariant(parts[2], out ry))
+						if (Exts.TryParseIntegerInvariant(value, out rr) && Exts.TryParseIntegerInvariant(value, out rp) && Exts.TryParseIntegerInvariant(value, out ry))
 							return new WRot(new WAngle(rr), new WAngle(rp), new WAngle(ry));
 					}
 				}
@@ -371,38 +396,6 @@ namespace OpenRA

 				return InvalidValueAction(value, fieldType, fieldName);
 			}
-			else if (fieldType == typeof(BooleanExpression))
-			{
-				if (value != null)
-				{
-					try
-					{
-						return BooleanExpressionCache[value];
-					}
-					catch (InvalidDataException e)
-					{
-						throw new YamlException(e.Message);
-					}
-				}
-
-				return InvalidValueAction(value, fieldType, fieldName);
-			}
-			else if (fieldType == typeof(IntegerExpression))
-			{
-				if (value != null)
-				{
-					try
-					{
-						return IntegerExpressionCache[value];
-					}
-					catch (InvalidDataException e)
-					{
-						throw new YamlException(e.Message);
-					}
-				}
-
-				return InvalidValueAction(value, fieldType, fieldName);
-			}
 			else if (fieldType.IsEnum)
 			{
 				try
@@ -414,33 +407,37 @@ namespace OpenRA
 					return InvalidValueAction(value, fieldType, fieldName);
 				}
 			}
-			else if (fieldType == typeof(bool))
-				return ParseYesNo(value, fieldType, fieldName);
-			else if (fieldType == typeof(int2[]))
+			else if (fieldType == typeof(ImageFormat))
 			{
 				if (value != null)
 				{
-					var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
-					if (parts.Length % 2 != 0)
-						return InvalidValueAction(value, fieldType, fieldName);
-
-					var ints = new int2[parts.Length / 2];
-					for (var i = 0; i < ints.Length; i++)
-						ints[i] = new int2(Exts.ParseIntegerInvariant(parts[2 * i]), Exts.ParseIntegerInvariant(parts[2 * i + 1]));
-
-					return ints;
+					switch (value.ToLowerInvariant())
+					{
+					case "bmp":
+						return ImageFormat.Bmp;
+					case "gif":
+						return ImageFormat.Gif;
+					case "jpg":
+					case "jpeg":
+						return ImageFormat.Jpeg;
+					case "tif":
+					case "tiff":
+						return ImageFormat.Tiff;
+					default:
+						return ImageFormat.Png;
+					}
 				}

 				return InvalidValueAction(value, fieldType, fieldName);
 			}
+			else if (fieldType == typeof(bool))
+				return ParseYesNo(value, fieldType, fieldName);
 			else if (fieldType.IsArray && fieldType.GetArrayRank() == 1)
 			{
 				if (value == null)
 					return Array.CreateInstance(fieldType.GetElementType(), 0);

-				var options = field != null && field.HasAttribute<AllowEmptyEntriesAttribute>() ?
-					StringSplitOptions.None : StringSplitOptions.RemoveEmptyEntries;
-				var parts = value.Split(new char[] { ',' }, options);
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);

 				var ret = Array.CreateInstance(fieldType.GetElementType(), parts.Length);
 				for (var i = 0; i < parts.Length; i++)
@@ -489,9 +486,6 @@ namespace OpenRA
 				if (value != null)
 				{
 					var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
-					if (parts.Length != 2)
-						return InvalidValueAction(value, fieldType, fieldName);
-
 					return new int2(Exts.ParseIntegerInvariant(parts[0]), Exts.ParseIntegerInvariant(parts[1]));
 				}

@@ -548,13 +542,14 @@ namespace OpenRA

 				return InvalidValueAction(value, fieldType, fieldName);
 			}
-			else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(BitSet<>))
+			else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Bits<>))
 			{
 				if (value != null)
 				{
 					var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
-					var ctor = fieldType.GetConstructor(new[] { typeof(string[]) });
-					return ctor.Invoke(new object[] { parts.Select(p => p.Trim()).ToArray() });
+					var argTypes = new Type[] { typeof(string[]) };
+					var argValues = new object[] { parts };
+					return fieldType.GetConstructor(argTypes).Invoke(argValues);
 				}

 				return InvalidValueAction(value, fieldType, fieldName);
@@ -666,13 +661,6 @@ namespace OpenRA
 				: base(true, true) { }
 		}

-		[AttributeUsage(AttributeTargets.Field)]
-		public sealed class AllowEmptyEntriesAttribute : SerializeAttribute
-		{
-			public AllowEmptyEntriesAttribute()
-				: base(allowEmptyEntries: true) { }
-		}
-
 		[AttributeUsage(AttributeTargets.Field)]
 		public sealed class LoadUsingAttribute : SerializeAttribute
 		{
@@ -696,13 +684,11 @@ namespace OpenRA
 			public bool FromYamlKey;
 			public bool DictionaryFromYamlKey;
 			public bool Required;
-			public bool AllowEmptyEntries;

-			public SerializeAttribute(bool serialize = true, bool required = false, bool allowEmptyEntries = false)
+			public SerializeAttribute(bool serialize = true, bool required = false)
 			{
 				Serialize = serialize;
 				Required = required;
-				AllowEmptyEntries = allowEmptyEntries;
 			}

 			internal Func<MiniYaml, object> GetLoader(Type type)
--- a/OpenRA.Game/FieldSaver.cs
+++ b/OpenRA.Game/FieldSaver.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -12,11 +12,12 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.Globalization;
 using System.Linq;
 using System.Reflection;
 using OpenRA.Graphics;
-using OpenRA.Primitives;

 namespace OpenRA
 {
@@ -74,9 +75,21 @@ namespace OpenRA

 			var t = v.GetType();

+			// Color.ToString() does the wrong thing; force it to format as rgb[a] hex
 			if (t == typeof(Color))
 			{
-				return ((Color)v).ToString();
+				return HSLColor.ToHexString((Color)v);
+			}
+
+			// HSLColor.ToString() does the wrong thing; force it to format as rgb[a] hex
+			if (t == typeof(HSLColor))
+			{
+				return ((HSLColor)v).ToHexString();
+			}
+
+			if (t == typeof(ImageFormat))
+			{
+				return ((ImageFormat)v).ToString();
 			}

 			if (t == typeof(Rectangle))
@@ -85,11 +98,6 @@ namespace OpenRA
 				return "{0},{1},{2},{3}".F(r.X, r.Y, r.Width, r.Height);
 			}

-			if (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(BitSet<>))
-			{
-				return ((IEnumerable<string>)v).Select(FormatValue).JoinWith(", ");
-			}
-
 			if (t.IsArray && t.GetArrayRank() == 1)
 			{
 				return ((Array)v).Cast<object>().Select(FormatValue).JoinWith(", ");
--- a/OpenRA.Mods.Common/FileFormats/Blast.cs
+++ b/OpenRA.Mods.Common/FileFormats/Blast.cs
@@ -1,15 +1,12 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version. For more
 * information, see COPYING.
- */
-#endregion
-#region Additional Copyright & License Information
-/*
+ *
 * This file is based on the blast routines (version 1.1 by Mark Adler)
 * included in zlib/contrib
 */
@@ -18,15 +15,14 @@
 using System;
 using System.IO;

-namespace OpenRA.Mods.Common.FileFormats
+namespace OpenRA.FileFormats
 {
 	public static class Blast
 	{
 		public static readonly int MAXBITS = 13; // maximum code length
 		public static readonly int MAXWIN = 4096; // maximum window size

-		static byte[] litlen =
-		{
+		static byte[] litlen = new byte[] {
 			11, 124, 8, 7, 28, 7, 188, 13, 76, 4,
 			10, 8, 12, 10, 12, 10, 8, 23, 8, 9,
 			7, 6, 7, 8, 7, 6, 55, 8, 23, 24,
@@ -40,21 +36,19 @@ namespace OpenRA.Mods.Common.FileFormats
 		};

 		// bit lengths of length codes 0..15
-		static byte[] lenlen = { 2, 35, 36, 53, 38, 23 };
+		static byte[] lenlen = new byte[] { 2, 35, 36, 53, 38, 23 };

 		// bit lengths of distance codes 0..63
-		static byte[] distlen = { 2, 20, 53, 230, 247, 151, 248 };
+		static byte[] distlen = new byte[] { 2, 20, 53, 230, 247, 151, 248 };

 		// base for length codes
-		static short[] lengthbase =
-		{
+		static short[] lengthbase = new short[] {
 			3, 2, 4, 5, 6, 7, 8, 9, 10, 12,
 			16, 24, 40, 72, 136, 264
 		};

 		// extra bits for length codes
-		static byte[] extra =
-		{
+		static byte[] extra = new byte[] {
 			0, 0, 0, 0, 0, 0, 0, 0, 1, 2,
 			3, 4, 5, 6, 7, 8
 		};
@@ -158,8 +152,7 @@ namespace OpenRA.Mods.Common.FileFormats
 							if (onProgress != null)
 								onProgress(input.Position - inputStart, output.Position - outputStart);
 						}
-					}
-					while (len != 0);
+					} while (len != 0);
 				}
 				else
 				{
@@ -177,8 +170,7 @@ namespace OpenRA.Mods.Common.FileFormats
 							onProgress(input.Position - inputStart, output.Position - outputStart);
 					}
 				}
-			}
-			while (true);
+			} while (true);
 		}

 		// Decode a code using Huffman table h.
--- a/OpenRA.Mods.Cnc/FileFormats/Blowfish.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/Blowfish.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,7 +9,7 @@
 */
 #endregion

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	class Blowfish
 	{
@@ -130,8 +130,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			return i;
 		}

-		uint[] lookupMfromP =
-		{
+		uint[] lookupMfromP = new uint[] {
 			0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
 			0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
 			0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
@@ -139,8 +138,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			0x9216d5d9, 0x8979fb1b
 		};

-		uint[,] lookupMfromS =
-		{
+		uint[,] lookupMfromS = new uint[,] {
 			{
 				0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
 				0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
--- a/OpenRA.Mods.Cnc/FileFormats/BlowfishKeyProvider.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/BlowfishKeyProvider.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -12,7 +12,7 @@
 using System;
 using System.Linq;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	/* TODO: Convert this direct C port into readable code. */

@@ -230,10 +230,10 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			InitBigNum(nTmp, 0, len);
 			InitBigNum(n1, 0, len);
 			nTwoBitLen = (int)BitLenBigNum(n2, len);
-			bit = 1U << (nTwoBitLen % 32);
+			bit = ((uint)1) << (nTwoBitLen % 32);
 			j = ((nTwoBitLen + 32) / 32) - 1;
 			nTwoByteLen = (uint)((nTwoBitLen - 1) / 32) * 4;
-			nTmp[nTwoByteLen / 4] |= 1U << ((nTwoBitLen - 1) & 0x1f);
+			nTmp[nTwoByteLen / 4] |= ((uint)1) << ((nTwoBitLen - 1) & 0x1f);

 			while (nTwoBitLen > 0)
 			{
@@ -302,7 +302,6 @@ namespace OpenRA.Mods.Cnc.FileFormats
 						pn2++;
 						tmp >>= 16;
 					}
-
 					*pn1 += (ushort)tmp;
 				}
 			}
@@ -386,7 +385,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 								MulBignumWord(esi, globOne, tmp, 2 * len);
 								if ((*edi & 0x8000) == 0)
 								{
-									if (SubBigNum((uint*)esi, (uint*)esi, g1, 0, (int)len) != 0)
+									if (0 != SubBigNum((uint*)esi, (uint*)esi, g1, 0, (int)len))
 										(*edi)--;
 								}
 							}
@@ -432,7 +431,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 					InitTwoDw(n4, n4_len);
 					n3_bitlen = (int)BitLenBigNum(n3, n4_len);
 					n3_len = (uint)((n3_bitlen + 31) / 32);
-					bit_mask = (1U << ((n3_bitlen - 1) % 32)) >> 1;
+					bit_mask = (((uint)1) << ((n3_bitlen - 1) % 32)) >> 1;
 					pn3 += n3_len - 1;
 					n3_bitlen--;
 					MoveBigNum(n1, n2, n4_len);
--- a/OpenRA.Mods.Cnc/FileFormats/CRC32.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/CRC32.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,7 +9,7 @@
 */
 #endregion

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	/// <summary>
 	/// Static class that uses a lookup table to calculates CRC32
@@ -132,4 +132,4 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			return Calculate(data, len, 0xFFFFFFFF);
 		}
 	}
-}
+}
--- a/OpenRA.Mods.Cnc/FileFormats/HvaReader.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/HvaReader.cs
@@ -1,19 +1,20 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version. For more
 * information, see COPYING.
 */
+
 #endregion

 using System;
 using System.IO;
 using OpenRA.Graphics;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	public class HvaReader
 	{
--- a/OpenRA.Mods.Cnc/FileFormats/IdxReader.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/IdxReader.cs
@@ -1,6 +1,6 @@
-#region Copyright & License Information
+#region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,9 @@

 using System.Collections.Generic;
 using System.IO;
+using OpenRA.FileSystem;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	public class IdxReader
 	{
@@ -41,4 +42,4 @@ namespace OpenRA.Mods.Cnc.FileFormats
 				Entries.Add(new IdxEntry(s));
 		}
 	}
-}
+}
--- a/OpenRA.Game/FileFormats/Png.cs
+++ b/OpenRA.Game/FileFormats/Png.cs
@@ -1,355 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Net;
-using System.Text;
-using ICSharpCode.SharpZipLib.Checksum;
-using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
-using OpenRA.Primitives;
-
-namespace OpenRA.FileFormats
-{
-	public class Png
-	{
-		static readonly byte[] Signature = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
-
-		public int Width { get; set; }
-		public int Height { get; set; }
-		public Color[] Palette { get; set; }
-		public byte[] Data { get; set; }
-		public Dictionary<string, string> EmbeddedData = new Dictionary<string, string>();
-
-		public Png(Stream s)
-		{
-			if (!Verify(s))
-				throw new InvalidDataException("PNG Signature is bogus");
-
-			s.Position += 8;
-			var headerParsed = false;
-			var isPaletted = false;
-			var is24Bit = false;
-			var data = new List<byte>();
-
-			while (true)
-			{
-				var length = IPAddress.NetworkToHostOrder(s.ReadInt32());
-				var type = Encoding.UTF8.GetString(s.ReadBytes(4));
-				var content = s.ReadBytes(length);
-				/*var crc = */s.ReadInt32();
-
-				if (!headerParsed && type != "IHDR")
-					throw new InvalidDataException("Invalid PNG file - header does not appear first.");
-
-				using (var ms = new MemoryStream(content))
-				{
-					switch (type)
-					{
-						case "IHDR":
-						{
-							if (headerParsed)
-								throw new InvalidDataException("Invalid PNG file - duplicate header.");
-							Width = IPAddress.NetworkToHostOrder(ms.ReadInt32());
-							Height = IPAddress.NetworkToHostOrder(ms.ReadInt32());
-
-							var bitDepth = ms.ReadUInt8();
-							var colorType = (PngColorType)ms.ReadByte();
-							isPaletted = IsPaletted(bitDepth, colorType);
-							is24Bit = colorType == PngColorType.Color;
-
-							var dataLength = Width * Height;
-							if (!isPaletted)
-								dataLength *= 4;
-
-							Data = new byte[dataLength];
-
-							var compression = ms.ReadByte();
-							/*var filter = */ms.ReadByte();
-							var interlace = ms.ReadByte();
-
-							if (compression != 0)
-								throw new InvalidDataException("Compression method not supported");
-
-							if (interlace != 0)
-								throw new InvalidDataException("Interlacing not supported");
-
-							headerParsed = true;
-
-							break;
-						}
-
-						case "PLTE":
-						{
-							Palette = new Color[256];
-							for (var i = 0; i < length / 3; i++)
-							{
-								var r = ms.ReadByte(); var g = ms.ReadByte(); var b = ms.ReadByte();
-								Palette[i] = Color.FromArgb(r, g, b);
-							}
-
-							break;
-						}
-
-						case "tRNS":
-						{
-							if (Palette == null)
-								throw new InvalidDataException("Non-Palette indexed PNG are not supported.");
-
-							for (var i = 0; i < length; i++)
-								Palette[i] = Color.FromArgb(ms.ReadByte(), Palette[i]);
-
-							break;
-						}
-
-						case "IDAT":
-						{
-							data.AddRange(content);
-
-							break;
-						}
-
-						case "tEXt":
-						{
-							var key = ms.ReadASCIIZ();
-							EmbeddedData.Add(key, ms.ReadASCII(length - key.Length - 1));
-
-							break;
-						}
-
-						case "IEND":
-						{
-							using (var ns = new MemoryStream(data.ToArray()))
-							{
-								using (var ds = new InflaterInputStream(ns))
-								{
-									var pxStride = isPaletted ? 1 : is24Bit ? 3 : 4;
-									var srcStride = Width * pxStride;
-									var destStride = Width * (isPaletted ? 1 : 4);
-
-									var prevLine = new byte[srcStride];
-									for (var y = 0; y < Height; y++)
-									{
-										var filter = (PngFilter)ds.ReadByte();
-										var line = ds.ReadBytes(srcStride);
-
-										for (var i = 0; i < srcStride; i++)
-											line[i] = i < pxStride
-												? UnapplyFilter(filter, line[i], 0, prevLine[i], 0)
-												: UnapplyFilter(filter, line[i], line[i - pxStride], prevLine[i], prevLine[i - pxStride]);
-
-										if (is24Bit)
-										{
-											// Fold alpha channel into RGB data
-											for (var i = 0; i < line.Length / 3; i++)
-											{
-												Array.Copy(line, 3 * i, Data, y * destStride + 4 * i, 3);
-												Data[y * destStride + 4 * i + 3] = 255;
-											}
-										}
-										else
-											Array.Copy(line, 0, Data, y * destStride, line.Length);
-
-										prevLine = line;
-									}
-								}
-							}
-
-							if (isPaletted && Palette == null)
-								throw new InvalidDataException("Non-Palette indexed PNG are not supported.");
-
-							return;
-						}
-					}
-				}
-			}
-		}
-
-		public Png(byte[] data, int width, int height, Color[] palette = null,
-			Dictionary<string, string> embeddedData = null)
-		{
-			var expectLength = width * height;
-			if (palette == null)
-				expectLength *= 4;
-
-			if (data.Length != expectLength)
-				throw new InvalidDataException("Input data does not match expected length");
-
-			Width = width;
-			Height = height;
-
-			Palette = palette;
-			Data = data;
-
-			if (embeddedData != null)
-				EmbeddedData = embeddedData;
-		}
-
-		public static bool Verify(Stream s)
-		{
-			var pos = s.Position;
-			var isPng = Signature.Aggregate(true, (current, t) => current && s.ReadUInt8() == t);
-			s.Position = pos;
-			return isPng;
-		}
-
-		static byte UnapplyFilter(PngFilter f, byte x, byte a, byte b, byte c)
-		{
-			switch (f)
-			{
-				case PngFilter.None: return x;
-				case PngFilter.Sub: return (byte)(x + a);
-				case PngFilter.Up: return (byte)(x + b);
-				case PngFilter.Average: return (byte)(x + (a + b) / 2);
-				case PngFilter.Paeth: return (byte)(x + Paeth(a, b, c));
-				default:
-					throw new InvalidOperationException("Unsupported Filter");
-			}
-		}
-
-		static byte Paeth(byte a, byte b, byte c)
-		{
-			var p = a + b - c;
-			var pa = Math.Abs(p - a);
-			var pb = Math.Abs(p - b);
-			var pc = Math.Abs(p - c);
-
-			return (pa <= pb && pa <= pc) ? a :
-				(pb <= pc) ? b : c;
-		}
-
-		[Flags]
-		enum PngColorType { Indexed = 1, Color = 2, Alpha = 4 }
-		enum PngFilter { None, Sub, Up, Average, Paeth }
-
-		static bool IsPaletted(byte bitDepth, PngColorType colorType)
-		{
-			if (bitDepth == 8 && colorType == (PngColorType.Indexed | PngColorType.Color))
-				return true;
-
-			if (bitDepth == 8 && colorType == (PngColorType.Color | PngColorType.Alpha))
-				return false;
-
-			if (bitDepth == 8 && colorType == PngColorType.Color)
-				return false;
-
-			throw new InvalidDataException("Unknown pixel format");
-		}
-
-		void WritePngChunk(Stream output, string type, Stream input)
-		{
-			input.Position = 0;
-
-			var typeBytes = Encoding.ASCII.GetBytes(type);
-			output.Write(IPAddress.HostToNetworkOrder((int)input.Length));
-			output.WriteArray(typeBytes);
-
-			var data = input.ReadAllBytes();
-			output.WriteArray(data);
-
-			var crc32 = new Crc32();
-			crc32.Update(typeBytes);
-			crc32.Update(data);
-			output.Write(IPAddress.NetworkToHostOrder((int)crc32.Value));
-		}
-
-		public byte[] Save()
-		{
-			using (var output = new MemoryStream())
-			{
-				output.WriteArray(Signature);
-				using (var header = new MemoryStream())
-				{
-					header.Write(IPAddress.HostToNetworkOrder(Width));
-					header.Write(IPAddress.HostToNetworkOrder(Height));
-					header.WriteByte(8); // Bit depth
-
-					var colorType = Palette != null
-						? PngColorType.Indexed | PngColorType.Color
-						: PngColorType.Color | PngColorType.Alpha;
-					header.WriteByte((byte)colorType);
-
-					header.WriteByte(0); // Compression
-					header.WriteByte(0); // Filter
-					header.WriteByte(0); // Interlacing
-
-					WritePngChunk(output, "IHDR", header);
-				}
-
-				bool alphaPalette = false;
-				if (Palette != null)
-				{
-					using (var palette = new MemoryStream())
-					{
-						foreach (var c in Palette)
-						{
-							palette.WriteByte(c.R);
-							palette.WriteByte(c.G);
-							palette.WriteByte(c.B);
-							alphaPalette |= c.A > 0;
-						}
-
-						WritePngChunk(output, "PLTE", palette);
-					}
-				}
-
-				if (alphaPalette)
-				{
-					using (var alpha = new MemoryStream())
-					{
-						foreach (var c in Palette)
-							alpha.WriteByte(c.A);
-
-						WritePngChunk(output, "tRNS", alpha);
-					}
-				}
-
-				using (var data = new MemoryStream())
-				{
-					using (var compressed = new DeflaterOutputStream(data))
-					{
-						var stride = Width * (Palette != null ? 1 : 4);
-						for (var y = 0; y < Height; y++)
-						{
-							// Write uncompressed scanlines for simplicity
-							compressed.WriteByte(0);
-							compressed.Write(Data, y * stride, stride);
-						}
-
-						compressed.Flush();
-						compressed.Finish();
-
-						WritePngChunk(output, "IDAT", data);
-					}
-				}
-
-				foreach (var kv in EmbeddedData)
-				{
-					using (var text = new MemoryStream())
-					{
-						text.WriteArray(Encoding.ASCII.GetBytes(kv.Key + (char)0 + kv.Value));
-						WritePngChunk(output, "tEXt", text);
-					}
-				}
-
-				WritePngChunk(output, "IEND", new MemoryStream());
-				return output.ToArray();
-			}
-		}
-
-		public void Save(string path)
-		{
-			File.WriteAllBytes(path, Save());
-		}
-	}
-}
--- a/OpenRA.Game/FileFormats/PngLoader.cs
+++ b/OpenRA.Game/FileFormats/PngLoader.cs
@@ -0,0 +1,206 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.IO.Compression;
+using System.Net;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace OpenRA.FileFormats
+{
+	public static class PngLoader
+	{
+		public static Bitmap Load(string filename)
+		{
+			using (var s = File.OpenRead(filename))
+				return Load(s);
+		}
+
+		public static Bitmap Load(Stream s)
+		{
+			using (var br = new BinaryReader(s))
+			{
+				var signature = new byte[] { 137, 80, 78, 71, 13, 10, 26, 10 };
+				foreach (var b in signature)
+					if (br.ReadByte() != b)
+						throw new InvalidDataException("PNG Signature is bogus");
+
+				Bitmap bitmap = null;
+				Color[] palette = null;
+				var data = new List<byte>();
+
+				try
+				{
+					for (;;)
+					{
+						var length = IPAddress.NetworkToHostOrder(br.ReadInt32());
+						var type = Encoding.UTF8.GetString(br.ReadBytes(4));
+						var content = br.ReadBytes(length);
+						/*var crc = */br.ReadInt32();
+
+						if (bitmap == null && type != "IHDR")
+							throw new InvalidDataException("Invalid PNG file - header does not appear first.");
+
+						using (var ms = new MemoryStream(content))
+						using (var cr = new BinaryReader(ms))
+							switch (type)
+							{
+								case "IHDR":
+									{
+										if (bitmap != null)
+											throw new InvalidDataException("Invalid PNG file - duplicate header.");
+
+										var width = IPAddress.NetworkToHostOrder(cr.ReadInt32());
+										var height = IPAddress.NetworkToHostOrder(cr.ReadInt32());
+										var bitDepth = cr.ReadByte();
+										var colorType = (PngColorType)cr.ReadByte();
+										var compression = cr.ReadByte();
+										/*var filter = */cr.ReadByte();
+										var interlace = cr.ReadByte();
+
+										if (compression != 0) throw new InvalidDataException("Compression method not supported");
+										if (interlace != 0) throw new InvalidDataException("Interlacing not supported");
+
+										bitmap = new Bitmap(width, height, MakePixelFormat(bitDepth, colorType));
+									}
+
+									break;
+
+								case "PLTE":
+									{
+										palette = new Color[256];
+										for (var i = 0; i < 256; i++)
+										{
+											var r = cr.ReadByte(); var g = cr.ReadByte(); var b = cr.ReadByte();
+											palette[i] = Color.FromArgb(r, g, b);
+										}
+									}
+
+									break;
+
+								case "tRNS":
+									{
+										if (palette == null)
+											throw new InvalidDataException("Non-Palette indexed PNG are not supported.");
+
+										for (var i = 0; i < length; i++)
+											palette[i] = Color.FromArgb(cr.ReadByte(), palette[i]);
+									}
+
+									break;
+
+								case "IDAT":
+									{
+										data.AddRange(content);
+									}
+
+									break;
+
+								case "IEND":
+									{
+										var bits = bitmap.LockBits(bitmap.Bounds(),
+											ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
+
+										using (var ns = new MemoryStream(data.ToArray()))
+										{
+											// 'zlib' flags bytes; confuses the DeflateStream.
+											/*var flags = (byte)*/ns.ReadByte();
+											/*var moreFlags = (byte)*/ns.ReadByte();
+
+											using (var ds = new DeflateStream(ns, CompressionMode.Decompress))
+											using (var dr = new BinaryReader(ds))
+											{
+												var prevLine = new byte[bitmap.Width];  // all zero
+												for (var y = 0; y < bitmap.Height; y++)
+												{
+													var filter = (PngFilter)dr.ReadByte();
+													var line = dr.ReadBytes(bitmap.Width);
+
+													for (var i = 0; i < bitmap.Width; i++)
+														line[i] = i > 0
+															? UnapplyFilter(filter, line[i], line[i - 1], prevLine[i], prevLine[i - 1])
+															: UnapplyFilter(filter, line[i], 0, prevLine[i], 0);
+
+													Marshal.Copy(line, 0, new IntPtr(bits.Scan0.ToInt64() + y * bits.Stride), line.Length);
+													prevLine = line;
+												}
+											}
+										}
+
+										bitmap.UnlockBits(bits);
+
+										if (palette == null)
+											throw new InvalidDataException("Non-Palette indexed PNG are not supported.");
+
+										using (var temp = new Bitmap(1, 1, PixelFormat.Format8bppIndexed))
+										{
+											var cp = temp.Palette;
+											for (var i = 0; i < 256; i++)
+												cp.Entries[i] = palette[i];     // finalize the palette.
+											bitmap.Palette = cp;
+											return bitmap;
+										}
+									}
+							}
+					}
+				}
+				catch
+				{
+					if (bitmap != null)
+						bitmap.Dispose();
+					throw;
+				}
+			}
+		}
+
+		static byte UnapplyFilter(PngFilter f, byte x, byte a, byte b, byte c)
+		{
+			switch (f)
+			{
+				case PngFilter.None: return x;
+				case PngFilter.Sub: return (byte)(x + a);
+				case PngFilter.Up: return (byte)(x + b);
+				case PngFilter.Average: return (byte)(x + (a + b) / 2);
+				case PngFilter.Paeth: return (byte)(x + Paeth(a, b, c));
+				default:
+					throw new InvalidOperationException("Unsupported Filter");
+			}
+		}
+
+		static byte Paeth(byte a, byte b, byte c)
+		{
+			var p = a + b - c;
+			var pa = Math.Abs(p - a);
+			var pb = Math.Abs(p - b);
+			var pc = Math.Abs(p - c);
+
+			return (pa <= pb && pa <= pc) ? a :
+				(pb <= pc) ? b : c;
+		}
+
+		[Flags]
+		enum PngColorType { Indexed = 1, Color = 2, Alpha = 4 }
+		enum PngFilter { None, Sub, Up, Average, Paeth }
+
+		static PixelFormat MakePixelFormat(byte bitDepth, PngColorType colorType)
+		{
+			if (bitDepth == 8 && colorType == (PngColorType.Indexed | PngColorType.Color))
+				return PixelFormat.Format8bppIndexed;
+
+			throw new InvalidDataException("Unknown pixel format");
+		}
+	}
+}
--- a/OpenRA.Game/FileFormats/ReplayMetadata.cs
+++ b/OpenRA.Game/FileFormats/ReplayMetadata.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -79,27 +79,45 @@ namespace OpenRA.FileFormats

 		public static ReplayMetadata Read(string path)
 		{
+			using (var fs = new FileStream(path, FileMode.Open))
+				return Read(fs, path);
+		}
+
+		static ReplayMetadata Read(FileStream fs, string path)
+		{
+			if (!fs.CanSeek)
+				return null;
+
+			if (fs.Length < 20)
+				return null;
+
 			try
 			{
-				using (var fs = new FileStream(path, FileMode.Open))
+				fs.Seek(-(4 + 4), SeekOrigin.End);
+				var dataLength = fs.ReadInt32();
+				if (fs.ReadInt32() == MetaEndMarker)
 				{
-					if (!fs.CanSeek)
-						return null;
-
-					if (fs.Length < 20)
-						return null;
-
-					fs.Seek(-(4 + 4), SeekOrigin.End);
-					var dataLength = fs.ReadInt32();
-					if (fs.ReadInt32() == MetaEndMarker)
+					// go back by (end marker + length storage + data + version + start marker) bytes
+					fs.Seek(-(4 + 4 + dataLength + 4 + 4), SeekOrigin.Current);
+					try
 					{
-						// Go back by (end marker + length storage + data + version + start marker) bytes
-						fs.Seek(-(4 + 4 + dataLength + 4 + 4), SeekOrigin.Current);
 						return new ReplayMetadata(fs, path);
 					}
+					catch (YamlException ex)
+					{
+						Log.Write("debug", ex.ToString());
+					}
+					catch (InvalidOperationException ex)
+					{
+						Log.Write("debug", ex.ToString());
+					}
+					catch (NotSupportedException ex)
+					{
+						Log.Write("debug", ex.ToString());
+					}
 				}
 			}
-			catch (Exception ex)
+			catch (IOException ex)
 			{
 				Log.Write("debug", ex.ToString());
 			}
--- a/OpenRA.Mods.Cnc/FileFormats/VxlReader.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/VxlReader.cs
@@ -1,18 +1,19 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version. For more
 * information, see COPYING.
 */
+
 #endregion

 using System.Collections.Generic;
 using System.IO;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	public enum NormalType { TiberianSun = 2, RedAlert2 = 4 }
 	public class VxlElement
@@ -66,8 +67,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 					z += count;
 					l.VoxelCount += count;
 					s.Seek(2 * count + 1, SeekOrigin.Current);
-				}
-				while (z < l.Size[2]);
+				} while (z < l.Size[2]);
 			}

 			// Read the data
@@ -100,8 +100,7 @@ namespace OpenRA.Mods.Cnc.FileFormats

 					// Skip duplicate count
 					s.ReadUInt8();
-				}
-				while (z < l.Size[2]);
+				} while (z < l.Size[2]);
 			}
 		}

--- a/OpenRA.Mods.Cnc/FileFormats/XccGlobalDatabase.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/XccGlobalDatabase.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -13,7 +13,7 @@ using System;
 using System.Collections.Generic;
 using System.IO;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	public class XccGlobalDatabase : IDisposable
 	{
@@ -28,16 +28,15 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			while (s.Peek() > -1)
 			{
 				var count = s.ReadInt32();
-				var chars = new List<char>();
 				for (var i = 0; i < count; i++)
 				{
+					var chars = new List<char>();
 					byte c;

 					// Read filename
 					while ((c = s.ReadUInt8()) != 0)
 						chars.Add((char)c);
 					entries.Add(new string(chars.ToArray()));
-					chars.Clear();

 					// Skip comment
 					while ((c = s.ReadUInt8()) != 0) { }
@@ -52,4 +51,4 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			s.Dispose();
 		}
 	}
-}
+}
--- a/OpenRA.Mods.Cnc/FileFormats/XccLocalDatabase.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/XccLocalDatabase.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -14,7 +14,7 @@ using System.IO;
 using System.Linq;
 using System.Text;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileFormats
 {
 	public class XccLocalDatabase
 	{
@@ -26,15 +26,14 @@ namespace OpenRA.Mods.Cnc.FileFormats
 			var reader = new BinaryReader(s);
 			var count = reader.ReadInt32();
 			Entries = new string[count];
-			var chars = new List<char>();
 			for (var i = 0; i < count; i++)
 			{
+				var chars = new List<char>();
 				char c;
 				while ((c = reader.ReadChar()) != 0)
 					chars.Add(c);

 				Entries[i] = new string(chars.ToArray());
-				chars.Clear();
 			}
 		}

@@ -51,7 +50,7 @@ namespace OpenRA.Mods.Cnc.FileFormats
 				writer.Write(Encoding.ASCII.GetBytes("XCC by Olaf van der Spek"));
 				writer.Write(new byte[] { 0x1A, 0x04, 0x17, 0x27, 0x10, 0x19, 0x80, 0x00 });

-				writer.Write(Entries.Sum(e => e.Length) + Entries.Length + 52); // Size
+				writer.Write(Entries.Aggregate(Entries.Length, (a, b) => a + b.Length) + 52); // Size
 				writer.Write(0); // Type
 				writer.Write(0); // Version
 				writer.Write(0); // Game/Format (0 == TD)
--- a/OpenRA.Game/FileSystem/BagFile.cs
+++ b/OpenRA.Game/FileSystem/BagFile.cs
@@ -0,0 +1,127 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
+using OpenRA.FileFormats;
+using OpenRA.Primitives;
+
+namespace OpenRA.FileSystem
+{
+	public sealed class BagFile : IReadOnlyPackage
+	{
+		public string Name { get; private set; }
+		public IEnumerable<string> Contents { get { return index.Keys; } }
+
+		readonly Stream s;
+		readonly Dictionary<string, IdxEntry> index;
+
+		public BagFile(FileSystem context, string filename)
+		{
+			Name = filename;
+
+			// A bag file is always accompanied with an .idx counterpart
+			// For example: audio.bag requires the audio.idx file
+			var indexFilename = Path.ChangeExtension(filename, ".idx");
+
+			// Build the index and dispose the stream, it is no longer needed after this
+			List<IdxEntry> entries;
+			using (var indexStream = context.Open(indexFilename))
+				entries = new IdxReader(indexStream).Entries;
+
+			index = entries.ToDictionaryWithConflictLog(x => x.Filename,
+				"{0} (bag format)".F(filename),
+				null, x => "(offs={0}, len={1})".F(x.Offset, x.Length));
+
+			s = context.Open(filename);
+		}
+
+		public Stream GetStream(string filename)
+		{
+			IdxEntry entry;
+			if (!index.TryGetValue(filename, out entry))
+				return null;
+
+			s.Seek(entry.Offset, SeekOrigin.Begin);
+
+			var waveHeaderMemoryStream = new MemoryStream();
+
+			var channels = (entry.Flags & 1) > 0 ? 2 : 1;
+
+			if ((entry.Flags & 2) > 0)
+			{
+				// PCM
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("RIFF"));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(entry.Length + 36));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("WAVE"));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("fmt "));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(16));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)1));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)channels));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(entry.SampleRate));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(2 * channels * entry.SampleRate));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)(2 * channels)));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)16));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("data"));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(entry.Length));
+			}
+
+			if ((entry.Flags & 8) > 0)
+			{
+				// IMA ADPCM
+				var samplesPerChunk = (2 * (entry.ChunkSize - 4)) + 1;
+				var bytesPerSec = (int)Math.Floor(((double)(2 * entry.ChunkSize) / samplesPerChunk) * ((double)entry.SampleRate / 2));
+				var chunkSize = entry.ChunkSize > entry.Length ? entry.Length : entry.ChunkSize;
+
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("RIFF"));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(entry.Length + 52));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("WAVE"));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("fmt "));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(20));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)17));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)channels));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(entry.SampleRate));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(bytesPerSec));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)chunkSize));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)4));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)2));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes((short)samplesPerChunk));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("fact"));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(4));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(4 * entry.Length));
+				waveHeaderMemoryStream.Write(Encoding.ASCII.GetBytes("data"));
+				waveHeaderMemoryStream.Write(BitConverter.GetBytes(entry.Length));
+			}
+
+			waveHeaderMemoryStream.Seek(0, SeekOrigin.Begin);
+
+			// Construct a merged stream
+			var mergedStream = new MergedStream(waveHeaderMemoryStream, s);
+			mergedStream.SetLength(waveHeaderMemoryStream.Length + entry.Length);
+
+			return mergedStream;
+		}
+
+		public bool Contains(string filename)
+		{
+			return index.ContainsKey(filename);
+		}
+
+		public void Dispose()
+		{
+			s.Dispose();
+		}
+	}
+}
--- a/OpenRA.Game/FileSystem/BigFile.cs
+++ b/OpenRA.Game/FileSystem/BigFile.cs
@@ -0,0 +1,105 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace OpenRA.FileSystem
+{
+	public sealed class BigFile : IReadOnlyPackage
+	{
+		public string Name { get; private set; }
+		public IEnumerable<string> Contents { get { return index.Keys; } }
+
+		readonly Dictionary<string, Entry> index = new Dictionary<string, Entry>();
+		readonly Stream s;
+
+		public BigFile(FileSystem context, string filename)
+		{
+			Name = filename;
+
+			s = context.Open(filename);
+			try
+			{
+				if (s.ReadASCII(4) != "BIGF")
+					throw new InvalidDataException("Header is not BIGF");
+
+				// Total archive size.
+				s.ReadUInt32();
+
+				var entryCount = s.ReadUInt32();
+				if (BitConverter.IsLittleEndian)
+					entryCount = int2.Swap(entryCount);
+
+				// First entry offset? This is apparently bogus for EA's .big files
+				// and we don't have to try seeking there since the entries typically start next in EA's .big files.
+				s.ReadUInt32();
+
+				for (var i = 0; i < entryCount; i++)
+				{
+					var entry = new Entry(s);
+					index.Add(entry.Path, entry);
+				}
+			}
+			catch
+			{
+				Dispose();
+				throw;
+			}
+		}
+
+		class Entry
+		{
+			readonly Stream s;
+			readonly uint offset;
+			readonly uint size;
+			public readonly string Path;
+
+			public Entry(Stream s)
+			{
+				this.s = s;
+
+				offset = s.ReadUInt32();
+				size = s.ReadUInt32();
+				if (BitConverter.IsLittleEndian)
+				{
+					offset = int2.Swap(offset);
+					size = int2.Swap(size);
+				}
+
+				Path = s.ReadASCIIZ();
+			}
+
+			public Stream GetData()
+			{
+				s.Position = offset;
+				return new MemoryStream(s.ReadBytes((int)size));
+			}
+		}
+
+		public Stream GetStream(string filename)
+		{
+			return index[filename].GetData();
+		}
+
+		public bool Contains(string filename)
+		{
+			return index.ContainsKey(filename);
+		}
+
+		public void Dispose()
+		{
+			s.Dispose();
+		}
+	}
+}
--- a/OpenRA.Game/FileSystem/D2kSoundResources.cs
+++ b/OpenRA.Game/FileSystem/D2kSoundResources.cs
@@ -0,0 +1,81 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.IO;
+using OpenRA.Primitives;
+
+namespace OpenRA.FileSystem
+{
+	public sealed class D2kSoundResources : IReadOnlyPackage
+	{
+		struct Entry
+		{
+			public readonly uint Offset;
+			public readonly uint Length;
+
+			public Entry(uint offset, uint length)
+			{
+				Offset = offset;
+				Length = length;
+			}
+		}
+
+		public string Name { get; private set; }
+		public IEnumerable<string> Contents { get { return index.Keys; } }
+
+		readonly Stream s;
+		readonly Dictionary<string, Entry> index = new Dictionary<string, Entry>();
+
+		public D2kSoundResources(FileSystem context, string filename)
+		{
+			Name = filename;
+
+			s = context.Open(filename);
+			try
+			{
+				var headerLength = s.ReadUInt32();
+				while (s.Position < headerLength + 4)
+				{
+					var name = s.ReadASCIIZ();
+					var offset = s.ReadUInt32();
+					var length = s.ReadUInt32();
+					index.Add(name, new Entry(offset, length));
+				}
+			}
+			catch
+			{
+				Dispose();
+				throw;
+			}
+		}
+
+		public Stream GetStream(string filename)
+		{
+			Entry e;
+			if (!index.TryGetValue(filename, out e))
+				return null;
+
+			s.Seek(e.Offset, SeekOrigin.Begin);
+			return new MemoryStream(s.ReadBytes((int)e.Length));
+		}
+
+		public bool Contains(string filename)
+		{
+			return index.ContainsKey(filename);
+		}
+
+		public void Dispose()
+		{
+			s.Dispose();
+		}
+	}
+}
--- a/OpenRA.Game/FileSystem/FileSystem.cs
+++ b/OpenRA.Game/FileSystem/FileSystem.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -23,7 +23,6 @@ namespace OpenRA.FileSystem
 		bool TryGetPackageContaining(string path, out IReadOnlyPackage package, out string filename);
 		bool TryOpen(string filename, out Stream s);
 		bool Exists(string filename);
-		bool IsExternalModFile(string filename);
 	}

 	public class FileSystem : IReadOnlyFileSystem
@@ -31,69 +30,86 @@ namespace OpenRA.FileSystem
 		public IEnumerable<IReadOnlyPackage> MountedPackages { get { return mountedPackages.Keys; } }
 		readonly Dictionary<IReadOnlyPackage, int> mountedPackages = new Dictionary<IReadOnlyPackage, int>();
 		readonly Dictionary<string, IReadOnlyPackage> explicitMounts = new Dictionary<string, IReadOnlyPackage>();
-		readonly string modID;

 		// Mod packages that should not be disposed
 		readonly List<IReadOnlyPackage> modPackages = new List<IReadOnlyPackage>();
 		readonly IReadOnlyDictionary<string, Manifest> installedMods;
-		readonly IPackageLoader[] packageLoaders;

 		Cache<string, List<IReadOnlyPackage>> fileIndex = new Cache<string, List<IReadOnlyPackage>>(_ => new List<IReadOnlyPackage>());

-		public FileSystem(string modID, IReadOnlyDictionary<string, Manifest> installedMods, IPackageLoader[] packageLoaders)
+		public FileSystem(IReadOnlyDictionary<string, Manifest> installedMods)
 		{
-			this.modID = modID;
 			this.installedMods = installedMods;
-			this.packageLoaders = packageLoaders
-				.Append(new ZipFileLoader())
-				.ToArray();
-		}
-
-		public bool TryParsePackage(Stream stream, string filename, out IReadOnlyPackage package)
-		{
-			package = null;
-			foreach (var packageLoader in packageLoaders)
-				if (packageLoader.TryParsePackage(stream, filename, this, out package))
-					return true;
-
-			return false;
 		}

 		public IReadOnlyPackage OpenPackage(string filename)
 		{
-			// Raw directories are the easiest and one of the most common cases, so try these first
-			var resolvedPath = Platform.ResolvePath(filename);
-			if (!filename.Contains("|") && Directory.Exists(resolvedPath))
-				return new Folder(resolvedPath);
+			if (filename.EndsWith(".mix", StringComparison.InvariantCultureIgnoreCase))
+				return new MixFile(this, filename);
+			if (filename.EndsWith(".zip", StringComparison.InvariantCultureIgnoreCase))
+				return new ZipFile(this, filename);
+			if (filename.EndsWith(".oramap", StringComparison.InvariantCultureIgnoreCase))
+				return new ZipFile(this, filename);
+			if (filename.EndsWith(".oramod", StringComparison.InvariantCultureIgnoreCase))
+				return new ZipFile(this, filename);
+			if (filename.EndsWith(".RS", StringComparison.InvariantCultureIgnoreCase))
+				return new D2kSoundResources(this, filename);
+			if (filename.EndsWith(".Z", StringComparison.InvariantCultureIgnoreCase))
+				return new InstallShieldPackage(this, filename);
+			if (filename.EndsWith(".PAK", StringComparison.InvariantCultureIgnoreCase))
+				return new PakFile(this, filename);
+			if (filename.EndsWith(".big", StringComparison.InvariantCultureIgnoreCase))
+				return new BigFile(this, filename);
+			if (filename.EndsWith(".bag", StringComparison.InvariantCultureIgnoreCase))
+				return new BagFile(this, filename);

-			// Children of another package require special handling
 			IReadOnlyPackage parent;
 			string subPath = null;
 			if (TryGetPackageContaining(filename, out parent, out subPath))
-				return parent.OpenPackage(subPath, this);
+				return OpenPackage(subPath, parent);

-			// Try and open it normally
-			IReadOnlyPackage package;
-			var stream = Open(filename);
-			if (TryParsePackage(stream, filename, out package))
-				return package;
+			return new Folder(Platform.ResolvePath(filename));
+		}

-			// No package loaders took ownership of the stream, so clean it up
-			stream.Dispose();
+		public IReadOnlyPackage OpenPackage(string filename, IReadOnlyPackage parent)
+		{
+			// HACK: limit support to zip and folder until we generalize the PackageLoader support
+			if (filename.EndsWith(".zip", StringComparison.InvariantCultureIgnoreCase) ||
+				filename.EndsWith(".oramap", StringComparison.InvariantCultureIgnoreCase))
+			{
+				using (var s = parent.GetStream(filename))
+					return new ZipFile(s, filename, parent);
+			}
+
+			if (parent is ZipFile)
+				return new ZipFolder(this, (ZipFile)parent, filename, filename);
+
+			if (parent is ZipFolder)
+			{
+				var folder = (ZipFolder)parent;
+				return new ZipFolder(this, folder.Parent, folder.Name + "/" + filename, filename);
+			}
+
+			if (parent is Folder)
+			{
+				var subFolder = Platform.ResolvePath(Path.Combine(parent.Name, filename));
+				if (Directory.Exists(subFolder))
+					return new Folder(subFolder);
+			}

 			return null;
 		}

 		public void Mount(string name, string explicitName = null)
 		{
-			var optional = name.StartsWith("~", StringComparison.Ordinal);
+			var optional = name.StartsWith("~");
 			if (optional)
 				name = name.Substring(1);

 			try
 			{
 				IReadOnlyPackage package;
-				if (name.StartsWith("$", StringComparison.Ordinal))
+				if (name.StartsWith("$"))
 				{
 					name = name.Substring(1);

@@ -105,11 +121,7 @@ namespace OpenRA.FileSystem
 					modPackages.Add(package);
 				}
 				else
-				{
 					package = OpenPackage(name);
-					if (package == null)
-						throw new InvalidOperationException("Could not open package '{0}', file not found or its format is not supported.".F(name));
-				}

 				Mount(package, explicitName);
 			}
@@ -251,15 +263,9 @@ namespace OpenRA.FileSystem
 			if (s != null)
 				return true;

-			// The file should be in an explicit package (but we couldn't find it)
-			// Thus don't try to find it using the filename (which contains the invalid '|' char)
-			// This can be removed once the TODO below is resolved
-			if (explicitSplit > 0)
-				return false;
-
 			// Ask each package individually
 			// TODO: This fallback can be removed once the filesystem cleanups are complete
-			var package = mountedPackages.Keys.LastOrDefault(x => x.Contains(filename));
+			var	package = mountedPackages.Keys.LastOrDefault(x => x.Contains(filename));
 			if (package != null)
 			{
 				s = package.GetStream(filename);
@@ -283,64 +289,5 @@ namespace OpenRA.FileSystem

 			return fileIndex.ContainsKey(filename);
 		}
-
-		/// <summary>
-		/// Returns true if the given filename references an external mod via an explicit mount
-		/// </summary>
-		public bool IsExternalModFile(string filename)
-		{
-			var explicitSplit = filename.IndexOf('|');
-			if (explicitSplit < 0)
-				return false;
-
-			IReadOnlyPackage explicitPackage;
-			if (!explicitMounts.TryGetValue(filename.Substring(0, explicitSplit), out explicitPackage))
-				return false;
-
-			if (installedMods[modID].Package == explicitPackage)
-				return false;
-
-			return modPackages.Contains(explicitPackage);
-		}
-
-		/// <summary>
-		/// Resolves a filesystem for an assembly, accounting for explicit and mod mounts.
-		/// Assemblies must exist in the native OS file system (not inside an OpenRA-defined package).
-		/// </summary>
-		public static string ResolveAssemblyPath(string path, Manifest manifest, InstalledMods installedMods)
-		{
-			var explicitSplit = path.IndexOf('|');
-			if (explicitSplit > 0)
-			{
-				var parent = path.Substring(0, explicitSplit);
-				var filename = path.Substring(explicitSplit + 1);
-
-				var parentPath = manifest.Packages.FirstOrDefault(kv => kv.Value == parent).Key;
-				if (parentPath == null)
-					return null;
-
-				if (parentPath.StartsWith("$", StringComparison.Ordinal))
-				{
-					Manifest mod;
-					if (!installedMods.TryGetValue(parentPath.Substring(1), out mod))
-						return null;
-
-					if (!(mod.Package is Folder))
-						return null;
-
-					path = Path.Combine(mod.Package.Name, filename);
-				}
-				else
-					path = Path.Combine(parentPath, filename);
-			}
-
-			var resolvedPath = Platform.ResolvePath(path);
-			return File.Exists(resolvedPath) ? resolvedPath : null;
-		}
-
-		public string GetPrefix(IReadOnlyPackage package)
-		{
-			return explicitMounts.ContainsValue(package) ? explicitMounts.First(f => f.Value == package).Key : null;
-		}
 	}
 }
--- a/OpenRA.Game/FileSystem/Folder.cs
+++ b/OpenRA.Game/FileSystem/Folder.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,7 +9,6 @@
 */
 #endregion

-using System;
 using System.Collections.Generic;
 using System.IO;

@@ -48,31 +47,7 @@ namespace OpenRA.FileSystem
 		public bool Contains(string filename)
 		{
 			var combined = Path.Combine(path, filename);
-			return combined.StartsWith(path, StringComparison.Ordinal) && File.Exists(combined);
-		}
-
-		public IReadOnlyPackage OpenPackage(string filename, FileSystem context)
-		{
-			var resolvedPath = Platform.ResolvePath(Path.Combine(Name, filename));
-			if (Directory.Exists(resolvedPath))
-				return new Folder(resolvedPath);
-
-			// Zip files loaded from Folders (and *only* from Folders) can be read-write
-			IReadWritePackage readWritePackage;
-			if (ZipFileLoader.TryParseReadWritePackage(resolvedPath, out readWritePackage))
-				return readWritePackage;
-
-			// Other package types can be loaded normally
-			IReadOnlyPackage package;
-			var s = GetStream(filename);
-			if (s == null)
-				return null;
-
-			if (context.TryParsePackage(s, filename, out package))
-				return package;
-
-			s.Dispose();
-			return null;
+			return combined.StartsWith(path) && File.Exists(combined);
 		}

 		public void Update(string filename, byte[] contents)
--- a/OpenRA.Game/FileSystem/IPackage.cs
+++ b/OpenRA.Game/FileSystem/IPackage.cs
@@ -1,6 +1,6 @@
-#region Copyright & License Information
+#region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -15,23 +15,12 @@ using System.IO;

 namespace OpenRA.FileSystem
 {
-	public interface IPackageLoader
-	{
-		/// <summary>
-		/// Attempt to parse a stream as this type of package.
-		/// If successful, the loader is expected to take ownership of `s` and dispose it once done.
-		/// If unsuccessful, the loader is expected to return the stream position to where it started.
-		/// </summary>
-		bool TryParsePackage(Stream s, string filename, FileSystem context, out IReadOnlyPackage package);
-	}
-
 	public interface IReadOnlyPackage : IDisposable
 	{
 		string Name { get; }
 		IEnumerable<string> Contents { get; }
 		Stream GetStream(string filename);
 		bool Contains(string filename);
-		IReadOnlyPackage OpenPackage(string filename, FileSystem context);
 	}

 	public interface IReadWritePackage : IReadOnlyPackage
--- a/OpenRA.Mods.Cnc/FileFormats/IdxEntry.cs
+++ b/OpenRA.Mods.Cnc/FileFormats/IdxEntry.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,9 +9,10 @@
 */
 #endregion

+using System.Collections.Generic;
 using System.IO;

-namespace OpenRA.Mods.Cnc.FileFormats
+namespace OpenRA.FileSystem
 {
 	public class IdxEntry
 	{
--- a/OpenRA.Game/FileSystem/InstallShieldPackage.cs
+++ b/OpenRA.Game/FileSystem/InstallShieldPackage.cs
@@ -0,0 +1,137 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using OpenRA.FileFormats;
+
+namespace OpenRA.FileSystem
+{
+	public sealed class InstallShieldPackage : IReadOnlyPackage
+	{
+		public struct Entry
+		{
+			public readonly uint Offset;
+			public readonly uint Length;
+
+			public Entry(uint offset, uint length)
+			{
+				Offset = offset;
+				Length = length;
+			}
+		}
+
+		public string Name { get; private set; }
+		public IEnumerable<string> Contents { get { return index.Keys; } }
+
+		readonly Dictionary<string, Entry> index = new Dictionary<string, Entry>();
+		readonly Stream s;
+		readonly long dataStart = 255;
+
+		public InstallShieldPackage(FileSystem context, string filename)
+		{
+			Name = filename;
+
+			s = context.Open(filename);
+			try
+			{
+				// Parse package header
+				var signature = s.ReadUInt32();
+				if (signature != 0x8C655D13)
+					throw new InvalidDataException("Not an Installshield package");
+
+				s.Position += 8;
+				/*var FileCount = */s.ReadUInt16();
+				s.Position += 4;
+				/*var ArchiveSize = */s.ReadUInt32();
+				s.Position += 19;
+				var tocAddress = s.ReadInt32();
+				s.Position += 4;
+				var dirCount = s.ReadUInt16();
+
+				// Parse the directory list
+				s.Position = tocAddress;
+
+				// Parse directories
+				var directories = new Dictionary<string, uint>();
+				for (var i = 0; i < dirCount; i++)
+				{
+					// Parse directory header
+					var fileCount = s.ReadUInt16();
+					var chunkSize = s.ReadUInt16();
+					var nameLength = s.ReadUInt16();
+					var dirName = s.ReadASCII(nameLength);
+
+					// Skip to the end of the chunk
+					s.ReadBytes(chunkSize - nameLength - 6);
+					directories.Add(dirName, fileCount);
+				}
+
+				// Parse files
+				foreach (var dir in directories)
+					for (var i = 0; i < dir.Value; i++)
+						ParseFile(s, dir.Key);
+			}
+			catch
+			{
+				Dispose();
+				throw;
+			}
+		}
+
+		uint accumulatedData = 0;
+		void ParseFile(Stream s, string dirName)
+		{
+			s.Position += 7;
+			var compressedSize = s.ReadUInt32();
+			s.Position += 12;
+			var chunkSize = s.ReadUInt16();
+			s.Position += 4;
+			var nameLength = s.ReadByte();
+			var fileName = dirName + "\\" + s.ReadASCII(nameLength);
+
+			// Use index syntax to overwrite any duplicate entries with the last value
+			index[fileName] = new Entry(accumulatedData, compressedSize);
+			accumulatedData += compressedSize;
+
+			// Skip to the end of the chunk
+			s.Position += chunkSize - nameLength - 30;
+		}
+
+		public Stream GetStream(string filename)
+		{
+			Entry e;
+			if (!index.TryGetValue(filename, out e))
+				return null;
+
+			s.Seek(dataStart + e.Offset, SeekOrigin.Begin);
+
+			var ret = new MemoryStream();
+			Blast.Decompress(s, ret);
+			ret.Seek(0, SeekOrigin.Begin);
+
+			return ret;
+		}
+
+		public bool Contains(string filename)
+		{
+			return index.ContainsKey(filename);
+		}
+
+		public IReadOnlyDictionary<string, Entry> Index { get { return new ReadOnlyDictionary<string, Entry>(index); } }
+
+		public void Dispose()
+		{
+			s.Dispose();
+		}
+	}
+}
--- a/OpenRA.Game/FileSystem/MixFile.cs
+++ b/OpenRA.Game/FileSystem/MixFile.cs
@@ -0,0 +1,227 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using OpenRA.FileFormats;
+using OpenRA.Primitives;
+
+namespace OpenRA.FileSystem
+{
+	public sealed class MixFile : IReadOnlyPackage
+	{
+		public string Name { get; private set; }
+		public IEnumerable<string> Contents { get { return index.Keys; } }
+
+		readonly Dictionary<string, PackageEntry> index;
+		readonly long dataStart;
+		readonly Stream s;
+		readonly FileSystem context;
+
+		public MixFile(FileSystem context, string filename)
+		{
+			Name = filename;
+			this.context = context;
+
+			s = context.Open(filename);
+			try
+			{
+				// Detect format type
+				var isCncMix = s.ReadUInt16() != 0;
+
+				// The C&C mix format doesn't contain any flags or encryption
+				var isEncrypted = false;
+				if (!isCncMix)
+					isEncrypted = (s.ReadUInt16() & 0x2) != 0;
+
+				List<PackageEntry> entries;
+				if (isEncrypted)
+				{
+					long unused;
+					entries = ParseHeader(DecryptHeader(s, 4, out dataStart), 0, out unused);
+				}
+				else
+					entries = ParseHeader(s, isCncMix ? 0 : 4, out dataStart);
+
+				index = ParseIndex(entries.ToDictionaryWithConflictLog(x => x.Hash,
+					"{0} ({1} format, Encrypted: {2}, DataStart: {3})".F(filename, isCncMix ? "C&C" : "RA/TS/RA2", isEncrypted, dataStart),
+					null, x => "(offs={0}, len={1})".F(x.Offset, x.Length)));
+			}
+			catch (Exception)
+			{
+				Dispose();
+				throw;
+			}
+		}
+
+		Dictionary<string, PackageEntry> ParseIndex(Dictionary<uint, PackageEntry> entries)
+		{
+			var classicIndex = new Dictionary<string, PackageEntry>();
+			var crcIndex = new Dictionary<string, PackageEntry>();
+			var allPossibleFilenames = new HashSet<string>();
+
+			// Try and find a local mix database
+			var dbNameClassic = PackageEntry.HashFilename("local mix database.dat", PackageHashType.Classic);
+			var dbNameCRC = PackageEntry.HashFilename("local mix database.dat", PackageHashType.CRC32);
+			foreach (var kv in entries)
+			{
+				if (kv.Key == dbNameClassic || kv.Key == dbNameCRC)
+				{
+					var db = new XccLocalDatabase(GetContent(kv.Value));
+					foreach (var e in db.Entries)
+						allPossibleFilenames.Add(e);
+
+					break;
+				}
+			}
+
+			// Load the global mix database
+			// TODO: This should be passed to the mix file ctor
+			if (context.Exists("global mix database.dat"))
+			{
+				using (var db = new XccGlobalDatabase(context.Open("global mix database.dat")))
+				{
+					foreach (var e in db.Entries)
+						allPossibleFilenames.Add(e);
+				}
+			}
+
+			foreach (var filename in allPossibleFilenames)
+			{
+				var classicHash = PackageEntry.HashFilename(filename, PackageHashType.Classic);
+				var crcHash = PackageEntry.HashFilename(filename, PackageHashType.CRC32);
+				PackageEntry e;
+
+				if (entries.TryGetValue(classicHash, out e))
+					classicIndex.Add(filename, e);
+
+				if (entries.TryGetValue(crcHash, out e))
+					crcIndex.Add(filename, e);
+			}
+
+			var bestIndex = crcIndex.Count > classicIndex.Count ? crcIndex : classicIndex;
+
+			var unknown = entries.Count - bestIndex.Count;
+			if (unknown > 0)
+				Log.Write("debug", "{0}: failed to resolve filenames for {1} unknown hashes".F(Name, unknown));
+
+			return bestIndex;
+		}
+
+		static List<PackageEntry> ParseHeader(Stream s, long offset, out long headerEnd)
+		{
+			s.Seek(offset, SeekOrigin.Begin);
+			var numFiles = s.ReadUInt16();
+			/*uint dataSize = */s.ReadUInt32();
+
+			var items = new List<PackageEntry>();
+			for (var i = 0; i < numFiles; i++)
+				items.Add(new PackageEntry(s));
+
+			headerEnd = offset + 6 + numFiles * PackageEntry.Size;
+			return items;
+		}
+
+		static MemoryStream DecryptHeader(Stream s, long offset, out long headerEnd)
+		{
+			s.Seek(offset, SeekOrigin.Begin);
+
+			// Decrypt blowfish key
+			var keyblock = s.ReadBytes(80);
+			var blowfishKey = new BlowfishKeyProvider().DecryptKey(keyblock);
+			var fish = new Blowfish(blowfishKey);
+
+			// Decrypt first block to work out the header length
+			var ms = Decrypt(ReadBlocks(s, offset + 80, 1), fish);
+			var numFiles = ms.ReadUInt16();
+
+			// Decrypt the full header - round bytes up to a full block
+			var blockCount = (13 + numFiles * PackageEntry.Size) / 8;
+			headerEnd = offset + 80 + blockCount * 8;
+
+			return Decrypt(ReadBlocks(s, offset + 80, blockCount), fish);
+		}
+
+		static MemoryStream Decrypt(uint[] h, Blowfish fish)
+		{
+			var decrypted = fish.Decrypt(h);
+
+			var ms = new MemoryStream();
+			var writer = new BinaryWriter(ms);
+			foreach (var t in decrypted)
+				writer.Write(t);
+			writer.Flush();
+
+			ms.Seek(0, SeekOrigin.Begin);
+			return ms;
+		}
+
+		static uint[] ReadBlocks(Stream s, long offset, int count)
+		{
+			if (offset < 0)
+				throw new ArgumentOutOfRangeException("offset", "Non-negative number required.");
+
+			if (count < 0)
+				throw new ArgumentOutOfRangeException("count", "Non-negative number required.");
+
+			if (offset + (count * 2) > s.Length)
+				throw new ArgumentException("Bytes to read {0} and offset {1} greater than stream length {2}.".F(count * 2, offset, s.Length));
+
+			s.Seek(offset, SeekOrigin.Begin);
+
+			// A block is a single encryption unit (represented as two 32-bit integers)
+			var ret = new uint[2 * count];
+			for (var i = 0; i < ret.Length; i++)
+				ret[i] = s.ReadUInt32();
+
+			return ret;
+		}
+
+		public Stream GetContent(PackageEntry entry)
+		{
+			Stream parentStream;
+			var offset = dataStart + entry.Offset + SegmentStream.GetOverallNestedOffset(s, out parentStream);
+			var path = ((FileStream)parentStream).Name;
+			return new SegmentStream(File.OpenRead(path), offset, entry.Length);
+		}
+
+		public Stream GetStream(string filename)
+		{
+			PackageEntry e;
+			if (!index.TryGetValue(filename, out e))
+				return null;
+
+			return GetContent(e);
+		}
+
+		public IReadOnlyDictionary<string, PackageEntry> Index
+		{
+			get
+			{
+				var absoluteIndex = index.ToDictionary(e => e.Key, e => new PackageEntry(e.Value.Hash, (uint)(e.Value.Offset + dataStart), e.Value.Length));
+				return new ReadOnlyDictionary<string, PackageEntry>(absoluteIndex);
+			}
+		}
+
+		public bool Contains(string filename)
+		{
+			return index.ContainsKey(filename);
+		}
+
+		public void Dispose()
+		{
+			s.Dispose();
+		}
+	}
+}
--- a/OpenRA.Mods.Cnc/FileSystem/PackageEntry.cs
+++ b/OpenRA.Mods.Cnc/FileSystem/PackageEntry.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -13,9 +13,9 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Text;
-using OpenRA.Mods.Cnc.FileFormats;
+using OpenRA.FileFormats;

-namespace OpenRA.Mods.Cnc.FileSystem
+namespace OpenRA.FileSystem
 {
 	public enum PackageHashType { Classic, CRC32 }

--- a/OpenRA.Game/FileSystem/Pak.cs
+++ b/OpenRA.Game/FileSystem/Pak.cs
@@ -0,0 +1,84 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.IO;
+
+namespace OpenRA.FileSystem
+{
+	struct Entry
+	{
+		public uint Offset;
+		public uint Length;
+		public string Filename;
+	}
+
+	public sealed class PakFile : IReadOnlyPackage
+	{
+		public string Name { get; private set; }
+		public IEnumerable<string> Contents { get { return index.Keys; } }
+
+		readonly Dictionary<string, Entry> index;
+		readonly Stream stream;
+
+		public PakFile(FileSystem context, string filename)
+		{
+			Name = filename;
+			index = new Dictionary<string, Entry>();
+
+			stream = context.Open(filename);
+			try
+			{
+				index = new Dictionary<string, Entry>();
+				var offset = stream.ReadUInt32();
+				while (offset != 0)
+				{
+					var file = stream.ReadASCIIZ();
+					var next = stream.ReadUInt32();
+					var length = (next == 0 ? (uint)stream.Length : next) - offset;
+
+					// Ignore duplicate files
+					if (index.ContainsKey(file))
+						continue;
+
+					index.Add(file, new Entry { Offset = offset, Length = length, Filename = file });
+					offset = next;
+				}
+			}
+			catch
+			{
+				Dispose();
+				throw;
+			}
+		}
+
+		public Stream GetStream(string filename)
+		{
+			Entry entry;
+			if (!index.TryGetValue(filename, out entry))
+				return null;
+
+			stream.Seek(entry.Offset, SeekOrigin.Begin);
+			var data = stream.ReadBytes((int)entry.Length);
+			return new MemoryStream(data);
+		}
+
+		public bool Contains(string filename)
+		{
+			return index.ContainsKey(filename);
+		}
+
+		public void Dispose()
+		{
+			stream.Dispose();
+		}
+	}
+}
--- a/OpenRA.Game/FileSystem/ZipFile.cs
+++ b/OpenRA.Game/FileSystem/ZipFile.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,231 +9,152 @@
 */
 #endregion

-using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Text;
 using ICSharpCode.SharpZipLib.Zip;
-using OpenRA.Primitives;
+using SZipFile = ICSharpCode.SharpZipLib.Zip.ZipFile;

 namespace OpenRA.FileSystem
 {
-	public class ZipFileLoader : IPackageLoader
+	public sealed class ZipFile : IReadWritePackage
 	{
-		static readonly string[] Extensions = { ".zip", ".oramap" };
+		public IReadWritePackage Parent { get; private set; }
+		public string Name { get; private set; }
+		readonly Stream pkgStream;
+		readonly SZipFile pkg;

-		class ReadOnlyZipFile : IReadOnlyPackage
+		static ZipFile()
 		{
-			public string Name { get; protected set; }
-			protected ZipFile pkg;
+			ZipConstants.DefaultCodePage = Encoding.UTF8.CodePage;
+		}

-			// Dummy constructor for use with ReadWriteZipFile
-			protected ReadOnlyZipFile() { }
+		public ZipFile(Stream stream, string name, IReadOnlyPackage parent = null)
+		{
+			// SharpZipLib breaks when asked to update archives loaded from outside streams or files
+			// We can work around this by creating a clean in-memory-only file, cutting all outside references
+			pkgStream = new MemoryStream();
+			stream.CopyTo(pkgStream);
+			pkgStream.Position = 0;

-			public ReadOnlyZipFile(Stream s, string filename)
-			{
-				Name = filename;
-				pkg = new ZipFile(s);
-			}
+			Name = name;
+			Parent = parent as IReadWritePackage;
+			pkg = new SZipFile(pkgStream);
+		}

-			public Stream GetStream(string filename)
-			{
-				var entry = pkg.GetEntry(filename);
-				if (entry == null)
-					return null;
+		public ZipFile(IReadOnlyFileSystem context, string filename)
+		{
+			string name;
+			IReadOnlyPackage p;
+			if (!context.TryGetPackageContaining(filename, out p, out name))
+				throw new FileNotFoundException("Unable to find parent package for " + filename);

-				using (var z = pkg.GetInputStream(entry))
-				{
-					var ms = new MemoryStream((int)entry.Size);
-					z.CopyTo(ms);
-					ms.Seek(0, SeekOrigin.Begin);
-					return ms;
-				}
-			}
+			Name = name;
+			Parent = p as IReadWritePackage;

-			public IEnumerable<string> Contents
-			{
-				get
-				{
-					foreach (ZipEntry entry in pkg)
-						yield return entry.Name;
-				}
-			}
+			// SharpZipLib breaks when asked to update archives loaded from outside streams or files
+			// We can work around this by creating a clean in-memory-only file, cutting all outside references
+			pkgStream = new MemoryStream();
+			using (var sourceStream = p.GetStream(name))
+				sourceStream.CopyTo(pkgStream);
+			pkgStream.Position = 0;

-			public bool Contains(string filename)
-			{
-				return pkg.GetEntry(filename) != null;
-			}
+			pkg = new SZipFile(pkgStream);
+		}

-			public void Dispose()
-			{
-				if (pkg != null)
-					pkg.Close();
-			}
+		ZipFile(string filename, IReadWritePackage parent)
+		{
+			pkgStream = new MemoryStream();

-			public IReadOnlyPackage OpenPackage(string filename, FileSystem context)
-			{
-				// Directories are stored with a trailing "/" in the index
-				var entry = pkg.GetEntry(filename) ?? pkg.GetEntry(filename + "/");
-				if (entry == null)
-					return null;
+			Name = filename;
+			Parent = parent;
+			pkg = SZipFile.Create(pkgStream);
+		}

-				if (entry.IsDirectory)
-					return new ZipFolder(this, filename);
+		public static ZipFile Create(string filename, IReadWritePackage parent)
+		{
+			return new ZipFile(filename, parent);
+		}

-				// Other package types can be loaded normally
-				IReadOnlyPackage package;
-				var s = GetStream(filename);
-				if (s == null)
-					return null;
-
-				if (context.TryParsePackage(s, filename, out package))
-					return package;
-
-				s.Dispose();
+		public Stream GetStream(string filename)
+		{
+			var entry = pkg.GetEntry(filename);
+			if (entry == null)
 				return null;
+
+			using (var z = pkg.GetInputStream(entry))
+			{
+				var ms = new MemoryStream();
+				z.CopyTo(ms);
+				ms.Seek(0, SeekOrigin.Begin);
+				return ms;
 			}
 		}

-		sealed class ReadWriteZipFile : ReadOnlyZipFile, IReadWritePackage
+		public IEnumerable<string> Contents
 		{
-			readonly MemoryStream pkgStream = new MemoryStream();
-
-			public ReadWriteZipFile(string filename, bool create = false)
+			get
 			{
-				// SharpZipLib breaks when asked to update archives loaded from outside streams or files
-				// We can work around this by creating a clean in-memory-only file, cutting all outside references
-				if (!create)
-				{
-					using (var copy = new MemoryStream(File.ReadAllBytes(filename)))
-					{
-						pkgStream.Capacity = (int)copy.Length;
-						copy.CopyTo(pkgStream);
-					}
-				}
-
-				pkgStream.Position = 0;
-				pkg = new ZipFile(pkgStream);
-				Name = filename;
-			}
-
-			void Commit()
-			{
-				var pos = pkgStream.Position;
-				pkgStream.Position = 0;
-				File.WriteAllBytes(Name, pkgStream.ReadBytes((int)pkgStream.Length));
-				pkgStream.Position = pos;
-			}
-
-			public void Update(string filename, byte[] contents)
-			{
-				pkg.BeginUpdate();
-				pkg.Add(new StaticStreamDataSource(new MemoryStream(contents)), filename);
-				pkg.CommitUpdate();
-				Commit();
-			}
-
-			public void Delete(string filename)
-			{
-				pkg.BeginUpdate();
-				pkg.Delete(filename);
-				pkg.CommitUpdate();
-				Commit();
+				foreach (ZipEntry entry in pkg)
+					yield return entry.Name;
 			}
 		}

-		sealed class ZipFolder : IReadOnlyPackage
+		public bool Contains(string filename)
 		{
-			public string Name { get { return path; } }
-			public ReadOnlyZipFile Parent { get; private set; }
-			readonly string path;
-
-			public ZipFolder(ReadOnlyZipFile parent, string path)
-			{
-				if (path.EndsWith("/", StringComparison.Ordinal))
-					path = path.Substring(0, path.Length - 1);
-
-				Parent = parent;
-				this.path = path;
-			}
-
-			public Stream GetStream(string filename)
-			{
-				// Zip files use '/' as a path separator
-				return Parent.GetStream(path + '/' + filename);
-			}
-
-			public IEnumerable<string> Contents
-			{
-				get
-				{
-					foreach (var entry in Parent.Contents)
-					{
-						if (entry.StartsWith(path, StringComparison.Ordinal) && entry != path)
-						{
-							var filename = entry.Substring(path.Length + 1);
-							var dirLevels = filename.Split('/').Count(c => !string.IsNullOrEmpty(c));
-							if (dirLevels == 1)
-								yield return filename;
-						}
-					}
-				}
-			}
-
-			public bool Contains(string filename)
-			{
-				return Parent.Contains(path + '/' + filename);
-			}
-
-			public IReadOnlyPackage OpenPackage(string filename, FileSystem context)
-			{
-				return Parent.OpenPackage(path + '/' + filename, context);
-			}
-
-			public void Dispose() { /* nothing to do */ }
+			return pkg.GetEntry(filename) != null;
 		}

-		class StaticStreamDataSource : IStaticDataSource
+		void Commit()
 		{
-			readonly Stream s;
-			public StaticStreamDataSource(Stream s)
-			{
-				this.s = s;
-			}
+			if (Parent == null)
+				throw new InvalidDataException("Cannot update ZipFile without writable parent");

-			public Stream GetSource()
-			{
-				return s;
-			}
+			var pos = pkgStream.Position;
+			pkgStream.Position = 0;
+			Parent.Update(Name, pkgStream.ReadBytes((int)pkgStream.Length));
+			pkgStream.Position = pos;
 		}

-		public bool TryParsePackage(Stream s, string filename, FileSystem context, out IReadOnlyPackage package)
+		public void Update(string filename, byte[] contents)
 		{
-			if (!Extensions.Any(e => filename.EndsWith(e, StringComparison.InvariantCultureIgnoreCase)))
-			{
-				package = null;
-				return false;
-			}
-
-			package = new ReadOnlyZipFile(s, filename);
-			return true;
+			pkg.BeginUpdate();
+			pkg.Add(new StaticStreamDataSource(new MemoryStream(contents)), filename);
+			pkg.CommitUpdate();
+			Commit();
 		}

-		public static bool TryParseReadWritePackage(string filename, out IReadWritePackage package)
+		public void Delete(string filename)
 		{
-			if (!Extensions.Any(e => filename.EndsWith(e, StringComparison.InvariantCultureIgnoreCase)))
-			{
-				package = null;
-				return false;
-			}
-
-			package = new ReadWriteZipFile(filename);
-			return true;
+			pkg.BeginUpdate();
+			pkg.Delete(filename);
+			pkg.CommitUpdate();
+			Commit();
 		}

-		public static IReadWritePackage Create(string filename)
+		public void Dispose()
 		{
-			return new ReadWriteZipFile(filename, true);
+			if (pkg != null)
+				pkg.Close();
+
+			if (pkgStream != null)
+				pkgStream.Dispose();
+		}
+	}
+
+	class StaticStreamDataSource : IStaticDataSource
+	{
+		readonly Stream s;
+		public StaticStreamDataSource(Stream s)
+		{
+			this.s = s;
+		}
+
+		public Stream GetSource()
+		{
+			return s;
 		}
 	}
 }
--- a/OpenRA.Game/FileSystem/ZipFolder.cs
+++ b/OpenRA.Game/FileSystem/ZipFolder.cs
@@ -0,0 +1,76 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using ICSharpCode.SharpZipLib.Zip;
+using SZipFile = ICSharpCode.SharpZipLib.Zip.ZipFile;
+
+namespace OpenRA.FileSystem
+{
+	public sealed class ZipFolder : IReadOnlyPackage
+	{
+		public string Name { get; private set; }
+		public ZipFile Parent { get; private set; }
+		readonly string path;
+
+		static ZipFolder()
+		{
+			ZipConstants.DefaultCodePage = Encoding.UTF8.CodePage;
+		}
+
+		public ZipFolder(FileSystem context, ZipFile parent, string path, string filename)
+		{
+			if (filename.EndsWith("/"))
+				filename = filename.Substring(0, filename.Length - 1);
+
+			Name = filename;
+			Parent = parent;
+			if (path.EndsWith("/"))
+				path = path.Substring(0, path.Length - 1);
+
+			this.path = path;
+		}
+
+		public Stream GetStream(string filename)
+		{
+			// Zip files use '/' as a path separator
+			return Parent.GetStream(path + '/' + filename);
+		}
+
+		public IEnumerable<string> Contents
+		{
+			get
+			{
+				foreach (var entry in Parent.Contents)
+				{
+					if (entry.StartsWith(path) && entry != path)
+					{
+						var filename = entry.Substring(path.Length + 1);
+						var dirLevels = filename.Split('/').Count(c => !string.IsNullOrEmpty(c));
+						if (dirLevels == 1)
+							yield return filename;
+					}
+				}
+			}
+		}
+
+		public bool Contains(string filename)
+		{
+			return Parent.Contains(path + '/' + filename);
+		}
+
+		public void Dispose() { /* nothing to do */ }
+	}
+}
--- a/OpenRA.Game/Fonts.cs
+++ b/OpenRA.Game/Fonts.cs
@@ -1,37 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System.Collections.Generic;
-
-namespace OpenRA
-{
-	public class FontData
-	{
-		public readonly string Font;
-		public readonly int Size;
-		public readonly int Ascender;
-	}
-
-	public class Fonts : IGlobalModData
-	{
-		[FieldLoader.LoadUsing("LoadFonts")]
-		public readonly Dictionary<string, FontData> FontList;
-
-		static object LoadFonts(MiniYaml y)
-		{
-			var ret = new Dictionary<string, FontData>();
-			foreach (var node in y.Nodes)
-				ret.Add(node.Key, FieldLoader.Load<FontData>(node.Value));
-
-			return ret;
-		}
-	}
-}
--- a/OpenRA.Game/Game.cs
+++ b/OpenRA.Game/Game.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -12,6 +12,8 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.Globalization;
 using System.IO;
 using System.Linq;
@@ -19,6 +21,8 @@ using System.Net;
 using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
+using OpenRA.Chat;
+using OpenRA.FileSystem;
 using OpenRA.Graphics;
 using OpenRA.Network;
 using OpenRA.Primitives;
@@ -34,12 +38,10 @@ namespace OpenRA
 		public const int TimestepJankThreshold = 250; // Don't catch up for delays larger than 250ms

 		public static InstalledMods Mods { get; private set; }
-		public static ExternalMods ExternalMods { get; private set; }

 		public static ModData ModData;
 		public static Settings Settings;
 		public static ICursor Cursor;
-		public static bool HideCursor;
 		static WorldRenderer worldRenderer;

 		internal static OrderManager OrderManager;
@@ -51,14 +53,11 @@ namespace OpenRA
 		public static Sound Sound;
 		public static bool HasInputFocus = false;

-		public static string EngineVersion { get; private set; }
-		public static LocalPlayerProfile LocalPlayerProfile;
+		public static bool BenchmarkMode = false;
+
+		public static GlobalChat GlobalChat;

 		static Task discoverNat;
-		static bool takeScreenshot = false;
-		static Benchmark benchmark = null;
-
-		public static event Action OnShellmapLoaded = () => { };

 		public static OrderManager JoinServer(string host, int port, string password, bool recordReplay = true)
 		{
@@ -164,19 +163,13 @@ namespace OpenRA
 			using (new PerfTimer("PrepareMap"))
 				map = ModData.PrepareMap(mapUID);
 			using (new PerfTimer("NewWorld"))
-				OrderManager.World = new World(ModData, map, OrderManager, type);
-
-			OrderManager.World.GameOver += FinishBenchmark;
+				OrderManager.World = new World(map, OrderManager, type);

 			worldRenderer = new WorldRenderer(ModData, OrderManager.World);

-			GC.Collect();
-
 			using (new PerfTimer("LoadComplete"))
 				OrderManager.World.LoadComplete(worldRenderer);

-			GC.Collect();
-
 			if (OrderManager.GameStarted)
 				return;

@@ -197,12 +190,7 @@ namespace OpenRA
 			var replay = OrderManager.Connection as ReplayConnection;
 			var replayName = replay != null ? replay.Filename : null;
 			var lobbyInfo = OrderManager.LobbyInfo;
-
-			// Reseed the RNG so this isn't an exact repeat of the last game
-			lobbyInfo.GlobalSettings.RandomSeed = CosmeticRandom.Next();
-
-			var orders = new[]
-			{
+			var orders = new[] {
 					Order.Command("sync_lobby {0}".F(lobbyInfo.Serialize())),
 					Order.Command("startgame")
 			};
@@ -251,54 +239,32 @@ namespace OpenRA

 		public static void InitializeSettings(Arguments args)
 		{
-			Settings = new Settings(Platform.ResolvePath(Path.Combine(Platform.SupportDirPrefix, "settings.yaml")), args);
+			Settings = new Settings(Platform.ResolvePath(Path.Combine("^", "settings.yaml")), args);
 		}

-		public static RunStatus InitializeAndRun(string[] args)
+		internal static void Initialize(Arguments args)
 		{
-			Initialize(new Arguments(args));
-			GC.Collect();
-			return Run();
-		}
-
-		static void Initialize(Arguments args)
-		{
-			var supportDirArg = args.GetValue("Engine.SupportDir", null);
-			if (supportDirArg != null)
-				Platform.OverrideSupportDir(supportDirArg);
-
 			Console.WriteLine("Platform is {0}", Platform.CurrentPlatform);

-			// Load the engine version as early as possible so it can be written to exception logs
-			try
-			{
-				EngineVersion = File.ReadAllText(Platform.ResolvePath(Path.Combine(".", "VERSION"))).Trim();
-			}
-			catch { }
-
-			if (string.IsNullOrEmpty(EngineVersion))
-				EngineVersion = "Unknown";
-
-			Console.WriteLine("Engine version is {0}", EngineVersion);
-
 			// Special case handling of Game.Mod argument: if it matches a real filesystem path
 			// then we use this to override the mod search path, and replace it with the mod id
-			var modID = args.GetValue("Game.Mod", null);
-			var explicitModPaths = new string[0];
-			if (modID != null && (File.Exists(modID) || Directory.Exists(modID)))
+			var modArgument = args.GetValue("Game.Mod", null);
+			string customModPath = null;
+			if (modArgument != null && (File.Exists(modArgument) || Directory.Exists(modArgument)))
 			{
-				explicitModPaths = new[] { modID };
-				modID = Path.GetFileNameWithoutExtension(modID);
+				customModPath = modArgument;
+				args.ReplaceValue("Game.Mod", Path.GetFileNameWithoutExtension(modArgument));
 			}

 			InitializeSettings(args);

 			Log.AddChannel("perf", "perf.log");
 			Log.AddChannel("debug", "debug.log");
-			Log.AddChannel("server", "server.log", true);
+			Log.AddChannel("server", "server.log");
 			Log.AddChannel("sound", "sound.log");
 			Log.AddChannel("graphics", "graphics.log");
 			Log.AddChannel("geoip", "geoip.log");
+			Log.AddChannel("irc", "irc.log");
 			Log.AddChannel("nat", "nat.log");

 			var platforms = new[] { Settings.Game.Platform, "Default", null };
@@ -338,43 +304,34 @@ namespace OpenRA

 			GeoIP.Initialize();

-			if (Settings.Server.DiscoverNatDevices)
+			if (!Game.Settings.Server.DiscoverNatDevices)
+				Game.Settings.Server.AllowPortForward = false;
+			else
+			{
 				discoverNat = UPnP.DiscoverNatDevices(Settings.Server.NatDiscoveryTimeout);
+				Game.Settings.Server.AllowPortForward = true;
+			}

-			var modSearchArg = args.GetValue("Engine.ModSearchPaths", null);
-			var modSearchPaths = modSearchArg != null ?
-				FieldLoader.GetValue<string[]>("Engine.ModsPath", modSearchArg) :
-				new[] { Path.Combine(".", "mods") };
+			GlobalChat = new GlobalChat();

-			Mods = new InstalledMods(modSearchPaths, explicitModPaths);
-			Console.WriteLine("Internal mods:");
+			Mods = new InstalledMods(customModPath);
+			Console.WriteLine("Available mods:");
 			foreach (var mod in Mods)
 				Console.WriteLine("\t{0}: {1} ({2})", mod.Key, mod.Value.Metadata.Title, mod.Value.Metadata.Version);

-			ExternalMods = new ExternalMods();
+			InitializeMod(Settings.Game.Mod, args);
+		}

-			Manifest currentMod;
-			if (modID != null && Mods.TryGetValue(modID, out currentMod))
-			{
-				var launchPath = args.GetValue("Engine.LaunchPath", Assembly.GetEntryAssembly().Location);
+		public static bool IsModInstalled(string modId)
+		{
+			return Mods.ContainsKey(modId) && Mods[modId].RequiresMods.All(IsModInstalled);
+		}

-				// Sanitize input from platform-specific launchers
-				// Process.Start requires paths to not be quoted, even if they contain spaces
-				if (launchPath.First() == '"' && launchPath.Last() == '"')
-					launchPath = launchPath.Substring(1, launchPath.Length - 2);
-
-				ExternalMods.Register(Mods[modID], launchPath, ModRegistration.User);
-
-				ExternalMod activeMod;
-				if (ExternalMods.TryGetValue(ExternalMod.MakeKey(Mods[modID]), out activeMod))
-					ExternalMods.ClearInvalidRegistrations(activeMod, ModRegistration.User);
-			}
-
-			Console.WriteLine("External mods:");
-			foreach (var mod in ExternalMods)
-				Console.WriteLine("\t{0}: {1} ({2})", mod.Key, mod.Value.Title, mod.Value.Version);
-
-			InitializeMod(modID, args);
+		public static bool IsModInstalled(KeyValuePair<string, string> mod)
+		{
+			return Mods.ContainsKey(mod.Key)
+				&& Mods[mod.Key].Metadata.Version == mod.Value
+				&& IsModInstalled(mod.Key);
 		}

 		public static void InitializeMod(string mod, Arguments args)
@@ -404,26 +361,27 @@ namespace OpenRA

 			ModData = null;

-			if (mod == null)
-				throw new InvalidOperationException("Game.Mod argument missing.");
-
-			if (!Mods.ContainsKey(mod))
-				throw new InvalidOperationException("Unknown or invalid mod '{0}'.".F(mod));
+			// Fall back to default if the mod doesn't exist or has missing prerequisites.
+			if (!IsModInstalled(mod))
+				mod = new GameSettings().Mod;

 			Console.WriteLine("Loading mod: {0}", mod);
+			Settings.Game.Mod = mod;

 			Sound.StopVideo();

 			ModData = new ModData(Mods[mod], Mods, true);

-			LocalPlayerProfile = new LocalPlayerProfile(Platform.ResolvePath(Path.Combine("^", Settings.Game.AuthProfile)), ModData.Manifest.Get<PlayerDatabase>());
-
-			if (!ModData.LoadScreen.BeforeLoad())
-				return;
-
 			using (new PerfTimer("LoadMaps"))
 				ModData.MapCache.LoadMaps();

+			// Mod assets are missing!
+			if (!ModData.LoadScreen.RequiredContentIsInstalled())
+			{
+				InitializeMod("modchooser", new Arguments());
+				return;
+			}
+
 			ModData.InitializeLoaders(ModData.DefaultFileSystem);
 			Renderer.InitializeFonts(ModData);

@@ -469,11 +427,9 @@ namespace OpenRA
 			{
 				Console.WriteLine("NAT discovery failed: {0}", e.Message);
 				Log.Write("nat", e.ToString());
+				Game.Settings.Server.AllowPortForward = false;
 			}

-			ChromeMetrics.TryGet("ChatMessageColor", out chatMessageColor);
-			ChromeMetrics.TryGet("SystemMessageColor", out systemMessageColor);
-
 			ModData.LoadScreen.StartGame(args);
 		}

@@ -487,10 +443,7 @@ namespace OpenRA
 			var shellmap = ChooseShellmap();

 			using (new PerfTimer("StartGame"))
-			{
 				StartGame(shellmap, WorldType.Shellmap);
-				OnShellmapLoaded();
-			}
 		}

 		static string ChooseShellmap()
@@ -505,54 +458,42 @@ namespace OpenRA
 			return shellmaps.Random(CosmeticRandom);
 		}

-		public static void SwitchToExternalMod(ExternalMod mod, string[] launchArguments = null, Action onFailed = null)
-		{
-			try
-			{
-				var args = launchArguments != null ? mod.LaunchArgs.Append(launchArguments) : mod.LaunchArgs;
-				var p = Process.Start(mod.LaunchPath, args.Select(a => "\"" + a + "\"").JoinWith(" "));
-				if (p == null || p.HasExited)
-					onFailed();
-				else
-				{
-					p.Close();
-					Exit();
-				}
-			}
-			catch (Exception e)
-			{
-				Log.Write("debug", "Failed to switch to external mod.");
-				Log.Write("debug", "Error was: " + e.Message);
-				onFailed();
-			}
-		}
-
 		static RunStatus state = RunStatus.Running;
 		public static event Action OnQuit = () => { };

 		// Note: These delayed actions should only be used by widgets or disposing objects
 		// - things that depend on a particular world should be queuing them on the world actor.
 		static volatile ActionQueue delayedActions = new ActionQueue();
-		static Color systemMessageColor = Color.White;
-		static Color chatMessageColor = Color.White;
 		public static void RunAfterTick(Action a) { delayedActions.Add(a, RunTime); }
 		public static void RunAfterDelay(int delayMilliseconds, Action a) { delayedActions.Add(a, RunTime + delayMilliseconds); }

 		static void TakeScreenshotInner()
 		{
-			using (new PerfTimer("Renderer.SaveScreenshot"))
+			Log.Write("debug", "Taking screenshot");
+
+			Bitmap bitmap;
+			using (new PerfTimer("Renderer.TakeScreenshot"))
+				bitmap = Renderer.Device.TakeScreenshot();
+
+			ThreadPool.QueueUserWorkItem(_ =>
 			{
 				var mod = ModData.Manifest.Metadata;
-				var directory = Platform.ResolvePath(Platform.SupportDirPrefix, "Screenshots", ModData.Manifest.Id, mod.Version);
+				var directory = Platform.ResolvePath("^", "Screenshots", ModData.Manifest.Id, mod.Version);
 				Directory.CreateDirectory(directory);

 				var filename = TimestampedFilename(true);
-				var path = Path.Combine(directory, string.Concat(filename, ".png"));
-				Log.Write("debug", "Taking screenshot " + path);
+				var format = Settings.Graphics.ScreenshotFormat;
+				var extension = ImageCodecInfo.GetImageEncoders().FirstOrDefault(x => x.FormatID == format.Guid)
+					.FilenameExtension.Split(';').First().ToLowerInvariant().Substring(1);
+				var destination = Path.Combine(directory, string.Concat(filename, extension));

-				Renderer.Context.SaveScreenshot(path);
-				Debug("Saved screenshot " + filename);
-			}
+				using (new PerfTimer("Save Screenshot ({0})".F(format)))
+					bitmap.Save(destination, format);
+
+				bitmap.Dispose();
+
+				RunAfterTick(() => Debug("Saved screenshot " + filename));
+			});
 		}

 		static void InnerLogicTick(OrderManager orderManager)
@@ -568,11 +509,13 @@ namespace OpenRA
 				var integralTickTimestep = (uiTickDelta / Timestep) * Timestep;
 				Ui.LastTickTime += integralTickTimestep >= TimestepJankThreshold ? integralTickTimestep : Timestep;

-				Sync.RunUnsynced(Settings.Debug.SyncCheckUnsyncedCode, world, Ui.Tick);
+				Viewport.TicksSinceLastMove += uiTickDelta / Timestep;
+
+				Sync.CheckSyncUnchanged(world, Ui.Tick);
 				Cursor.Tick();
 			}

-			var worldTimestep = world == null ? Timestep : world.IsLoadingGameSave ? 1 : world.Timestep;
+			var worldTimestep = world == null ? Timestep : world.Timestep;
 			var worldTickDelta = tick - orderManager.LastTickTime;
 			if (worldTimestep != 0 && worldTickDelta >= worldTimestep)
 			{
@@ -586,41 +529,46 @@ namespace OpenRA
 					orderManager.LastTickTime += integralTickTimestep >= TimestepJankThreshold ? integralTickTimestep : worldTimestep;

 					Sound.Tick();
-					Sync.RunUnsynced(Settings.Debug.SyncCheckUnsyncedCode, world, orderManager.TickImmediate);
+					Sync.CheckSyncUnchanged(world, orderManager.TickImmediate);

 					if (world == null)
 						return;

-					var isNetTick = LocalTick % NetTickScale == 0;
-
-					if (!isNetTick || orderManager.IsReadyForNextFrame)
+					// Don't tick when the shellmap is disabled
+					if (world.ShouldTick)
 					{
-						++orderManager.LocalFrameNumber;
+						var isNetTick = LocalTick % NetTickScale == 0;

-						Log.Write("debug", "--Tick: {0} ({1})", LocalTick, isNetTick ? "net" : "local");
-
-						if (isNetTick)
-							orderManager.Tick();
-
-						Sync.RunUnsynced(Settings.Debug.SyncCheckUnsyncedCode, world, () =>
+						if (!isNetTick || orderManager.IsReadyForNextFrame)
 						{
-							world.OrderGenerator.Tick(world);
-						});
+							++orderManager.LocalFrameNumber;

-						world.Tick();
+							Log.Write("debug", "--Tick: {0} ({1})", LocalTick, isNetTick ? "net" : "local");

-						PerfHistory.Tick();
+							if (BenchmarkMode)
+								Log.Write("cpu", "{0};{1}".F(LocalTick, PerfHistory.Items["tick_time"].LastValue));
+
+							if (isNetTick)
+								orderManager.Tick();
+
+							Sync.CheckSyncUnchanged(world, () =>
+							{
+								world.OrderGenerator.Tick(world);
+								world.Selection.Tick(world);
+							});
+
+							world.Tick();
+
+							PerfHistory.Tick();
+						}
+						else if (orderManager.NetFrameNumber == 0)
+							orderManager.LastTickTime = RunTime;
 					}
-					else if (orderManager.NetFrameNumber == 0)
-						orderManager.LastTickTime = RunTime;
+					else
+						PerfHistory.Tick();

-					// Wait until we have done our first world Tick before TickRendering
-					if (orderManager.LocalFrameNumber > 0)
-						Sync.RunUnsynced(Settings.Debug.SyncCheckUnsyncedCode, world, () => world.TickRender(worldRenderer));
+					Sync.CheckSyncUnchanged(world, () => world.TickRender(worldRenderer));
 				}
-
-				if (benchmark != null)
-					benchmark.Tick(LocalTick);
 			}
 		}

@@ -639,10 +587,7 @@ namespace OpenRA
 				InnerLogicTick(worldRenderer.World.OrderManager);
 		}

-		public static void TakeScreenshot()
-		{
-			takeScreenshot = true;
-		}
+		public static bool TakeScreenshot = false;

 		static void RenderTick()
 		{
@@ -655,40 +600,32 @@ namespace OpenRA
 				{
 					Renderer.BeginFrame(worldRenderer.Viewport.TopLeft, worldRenderer.Viewport.Zoom);
 					Sound.SetListenerPosition(worldRenderer.Viewport.CenterPosition);
-
-					// Use worldRenderer.World instead of OrderManager.World to avoid a rendering mismatch while processing orders
-					if (!worldRenderer.World.IsLoadingGameSave)
-						worldRenderer.Draw();
+					worldRenderer.Draw();
 				}
 				else
 					Renderer.BeginFrame(int2.Zero, 1f);

 				using (new PerfSample("render_widgets"))
 				{
-					Renderer.WorldModelRenderer.BeginFrame();
+					Renderer.WorldVoxelRenderer.BeginFrame();
 					Ui.PrepareRenderables();
-					Renderer.WorldModelRenderer.EndFrame();
+					Renderer.WorldVoxelRenderer.EndFrame();

 					Ui.Draw();

 					if (ModData != null && ModData.CursorProvider != null)
 					{
-						if (HideCursor)
-							Cursor.SetCursor(null);
-						else
-						{
-							Cursor.SetCursor(Ui.Root.GetCursorOuter(Viewport.LastMousePos) ?? "default");
-							Cursor.Render(Renderer);
-						}
+						Cursor.SetCursor(Ui.Root.GetCursorOuter(Viewport.LastMousePos) ?? "default");
+						Cursor.Render(Renderer);
 					}
 				}

 				using (new PerfSample("render_flip"))
 					Renderer.EndFrame(new DefaultInputHandler(OrderManager.World));

-				if (takeScreenshot)
+				if (TakeScreenshot)
 				{
-					takeScreenshot = false;
+					TakeScreenshot = false;
 					TakeScreenshotInner();
 				}
 			}
@@ -697,6 +634,9 @@ namespace OpenRA
 			PerfHistory.Items["batches"].Tick();
 			PerfHistory.Items["render_widgets"].Tick();
 			PerfHistory.Items["render_flip"].Tick();
+
+			if (BenchmarkMode)
+				Log.Write("render", "{0};{1}".F(RenderFrame, PerfHistory.Items["render"].LastValue));
 		}

 		static void Loop()
@@ -753,13 +693,6 @@ namespace OpenRA
 				var maxFramerate = Settings.Graphics.CapFramerate ? Settings.Graphics.MaxFramerate.Clamp(1, 1000) : 1000;
 				var renderInterval = 1000 / maxFramerate;

-				// Tick as fast as possible while restoring game saves, capping rendering at 5 FPS
-				if (OrderManager.World != null && OrderManager.World.IsLoadingGameSave)
-				{
-					logicInterval = 1;
-					renderInterval = 200;
-				}
-
 				var now = RunTime;

 				// If the logic has fallen behind too much, skip it and catch up
@@ -779,7 +712,7 @@ namespace OpenRA
 						LogicTick();

 						// Force at least one render per tick during regular gameplay
-						if (OrderManager.World != null && !OrderManager.World.IsLoadingGameSave && !OrderManager.World.IsReplay)
+						if (OrderManager.World != null && !OrderManager.World.IsReplay)
 							forceRender = true;
 					}

@@ -806,7 +739,7 @@ namespace OpenRA
 			}
 		}

-		static RunStatus Run()
+		internal static RunStatus Run()
 		{
 			if (Settings.Graphics.MaxFramerate < 1)
 			{
@@ -830,6 +763,7 @@ namespace OpenRA
 			ModData.Dispose();
 			ChromeProvider.Deinitialize();

+			GlobalChat.Dispose();
 			Sound.Dispose();
 			Renderer.Dispose();

@@ -843,19 +777,19 @@ namespace OpenRA
 			state = RunStatus.Success;
 		}

-		public static void AddSystemLine(string name, string text)
+		public static void Restart()
 		{
-			OrderManager.AddChatLine(name, systemMessageColor, text, systemMessageColor);
+			state = RunStatus.Restart;
 		}

-		public static void AddChatLine(string name, Color nameColor, string text)
+		public static void AddChatLine(Color color, string name, string text)
 		{
-			OrderManager.AddChatLine(name, nameColor, text, chatMessageColor);
+			OrderManager.AddChatLine(color, name, text);
 		}

 		public static void Debug(string s, params object[] args)
 		{
-			AddSystemLine("Debug", string.Format(s, args));
+			AddChatLine(Color.White, "Debug", string.Format(s, args));
 		}

 		public static void Disconnect()
@@ -890,7 +824,8 @@ namespace OpenRA
 			{
 				Name = "Skirmish Game",
 				Map = map,
-				AdvertiseOnline = false
+				AdvertiseOnline = false,
+				AllowPortForward = false
 			};

 			server = new Server.Server(new IPEndPoint(IPAddress.Loopback, 0), settings, ModData, false);
@@ -902,42 +837,5 @@ namespace OpenRA
 		{
 			return OrderManager != null && OrderManager.World == world && !world.Disposing;
 		}
-
-		public static bool SetClipboardText(string text)
-		{
-			return Renderer.Window.SetClipboardText(text);
-		}
-
-		public static void BenchmarkMode(string prefix)
-		{
-			benchmark = new Benchmark(prefix);
-		}
-
-		public static void LoadMap(string launchMap)
-		{
-			var orders = new List<Order>
-			{
-				Order.Command("option gamespeed {0}".F("default")),
-				Order.Command("state {0}".F(Session.ClientState.Ready))
-			};
-
-			var path = Platform.ResolvePath(launchMap);
-			var map = ModData.MapCache.SingleOrDefault(m => m.Uid == launchMap) ??
-				ModData.MapCache.SingleOrDefault(m => m.Package.Name == path);
-
-			if (map == null)
-				throw new InvalidOperationException("Could not find map '{0}'.".F(launchMap));
-
-			CreateAndStartLocalServer(map.Uid, orders);
-		}
-
-		public static void FinishBenchmark()
-		{
-			if (benchmark != null)
-			{
-				benchmark.Write();
-				Exit();
-			}
-		}
 	}
 }
--- a/OpenRA.Game/GameInformation.cs
+++ b/OpenRA.Game/GameInformation.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -12,8 +12,8 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using OpenRA.Graphics;
 using OpenRA.Network;
-using OpenRA.Primitives;

 namespace OpenRA
 {
@@ -24,7 +24,6 @@ namespace OpenRA

 		public string MapUid;
 		public string MapTitle;
-		public int FinalGameTick;

 		/// <summary>Game start timestamp (when the recoding started).</summary>
 		public DateTime StartTimeUtc;
@@ -122,8 +121,7 @@ namespace OpenRA
 				Team = client.Team,
 				SpawnPoint = runtimePlayer.SpawnPoint,
 				IsRandomFaction = runtimePlayer.Faction.InternalName != client.Faction,
-				IsRandomSpawnPoint = runtimePlayer.SpawnPoint != client.SpawnPoint,
-				Fingerprint = client.Fingerprint
+				IsRandomSpawnPoint = runtimePlayer.SpawnPoint != client.SpawnPoint
 			};

 			playersByRuntime.Add(runtimePlayer, player);
@@ -156,7 +154,7 @@ namespace OpenRA

 			/// <summary>The faction ID, a.k.a. the faction's internal name.</summary>
 			public string FactionId;
-			public Color Color;
+			public HSLColor Color;

 			/// <summary>The team ID on start-up, or 0 if the player is not part of a team.</summary>
 			public int Team;
@@ -168,9 +166,6 @@ namespace OpenRA
 			/// <summary>True if the spawn point was chosen at random; otherwise, false.</summary>
 			public bool IsRandomSpawnPoint;

-			/// <summary>Player authentication fingerprint for the OpenRA forum.</summary>
-			public string Fingerprint;
-
 			#endregion

 			#region
--- a/OpenRA.Game/GameRules/ActorInfo.cs
+++ b/OpenRA.Game/GameRules/ActorInfo.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -22,8 +22,6 @@ namespace OpenRA
 	/// </summary>
 	public class ActorInfo
 	{
-		public const string AbstractActorPrefix = "^";
-
 		/// <summary>
 		/// The actor name can be anything, but the sprites used in the Render*: traits default to this one.
 		/// If you add an ^ in front of the name, the engine will recognize this as a collection of traits
@@ -40,6 +38,7 @@ namespace OpenRA
 			{
 				Name = name;

+				var abstractActorType = name.StartsWith("^");
 				foreach (var t in node.Nodes)
 				{
 					try
@@ -48,11 +47,10 @@ namespace OpenRA
 					}
 					catch (FieldLoader.MissingFieldsException e)
 					{
-						throw new YamlException(e.Message);
+						if (!abstractActorType)
+							throw new YamlException(e.Message);
 					}
 				}
-
-				traits.TrimExcess();
 			}
 			catch (YamlException e)
 			{
@@ -65,7 +63,6 @@ namespace OpenRA
 			Name = name;
 			foreach (var t in traitInfos)
 				traits.Add(t);
-			traits.TrimExcess();
 		}

 		static ITraitInfo LoadTraitInfo(ObjectCreator creator, string traitName, MiniYaml my)
@@ -147,18 +144,23 @@ namespace OpenRA
 				.Select(t => t.GetGenericArguments()[0]);
 		}

+		public IEnumerable<Pair<string, Type>> GetInitKeys()
+		{
+			var inits = traits.WithInterface<ITraitInfo>().SelectMany(
+				t => t.GetType().GetInterfaces()
+					.Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(UsesInit<>))
+					.Select(i => i.GetGenericArguments()[0])).ToList();
+
+			inits.Add(typeof(OwnerInit));		/* not exposed by a trait; this is used by the Actor itself */
+
+			return inits.Select(
+				i => Pair.New(
+					i.Name.Replace("Init", ""), i));
+		}
+
 		public bool HasTraitInfo<T>() where T : ITraitInfoInterface { return traits.Contains<T>(); }
 		public T TraitInfo<T>() where T : ITraitInfoInterface { return traits.Get<T>(); }
 		public T TraitInfoOrDefault<T>() where T : ITraitInfoInterface { return traits.GetOrDefault<T>(); }
 		public IEnumerable<T> TraitInfos<T>() where T : ITraitInfoInterface { return traits.WithInterface<T>(); }
-
-		public BitSet<TargetableType> GetAllTargetTypes()
-		{
-			// PERF: Avoid LINQ.
-			var targetTypes = default(BitSet<TargetableType>);
-			foreach (var targetable in TraitInfos<ITargetableInfo>())
-				targetTypes = targetTypes.Union(targetable.GetTargetTypes());
-			return targetTypes;
-		}
 	}
 }
--- a/OpenRA.Game/GameRules/MusicInfo.cs
+++ b/OpenRA.Game/GameRules/MusicInfo.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,6 +10,7 @@
 #endregion

 using System.IO;
+using OpenRA.FileFormats;
 using OpenRA.FileSystem;

 namespace OpenRA.GameRules
@@ -19,7 +20,6 @@ namespace OpenRA.GameRules
 		public readonly string Filename;
 		public readonly string Title;
 		public readonly bool Hidden;
-		public readonly float VolumeModifier = 1f;

 		public int Length { get; private set; } // seconds
 		public bool Exists { get; private set; }
@@ -32,9 +32,6 @@ namespace OpenRA.GameRules
 			if (nd.ContainsKey("Hidden"))
 				bool.TryParse(nd["Hidden"].Value, out Hidden);

-			if (nd.ContainsKey("VolumeModifier"))
-				VolumeModifier = FieldLoader.GetValue<float>("VolumeModifier", nd["VolumeModifier"].Value);
-
 			var ext = nd.ContainsKey("Extension") ? nd["Extension"].Value : "aud";
 			Filename = (nd.ContainsKey("Filename") ? nd["Filename"].Value : key) + "." + ext;
 		}
@@ -45,24 +42,18 @@ namespace OpenRA.GameRules
 			if (!fileSystem.TryOpen(Filename, out stream))
 				return;

-			try
+			Exists = true;
+			ISoundFormat soundFormat;
+			foreach (var loader in Game.ModData.SoundLoaders)
 			{
-				Exists = true;
-				foreach (var loader in Game.ModData.SoundLoaders)
+				if (loader.TryParseSound(stream, out soundFormat))
 				{
-					ISoundFormat soundFormat;
-					if (loader.TryParseSound(stream, out soundFormat))
-					{
-						Length = (int)soundFormat.LengthInSeconds;
-						soundFormat.Dispose();
-						break;
-					}
+					Length = (int)soundFormat.LengthInSeconds;
+					break;
 				}
 			}
-			finally
-			{
-				stream.Dispose();
-			}
+
+			stream.Dispose();
 		}
 	}
 }
--- a/OpenRA.Game/GameRules/Ruleset.cs
+++ b/OpenRA.Game/GameRules/Ruleset.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -29,7 +29,6 @@ namespace OpenRA
 		public readonly IReadOnlyDictionary<string, MusicInfo> Music;
 		public readonly TileSet TileSet;
 		public readonly SequenceProvider Sequences;
-		public readonly IReadOnlyDictionary<string, MiniYamlNode> ModelSequences;

 		public Ruleset(
 			IReadOnlyDictionary<string, ActorInfo> actors,
@@ -38,8 +37,7 @@ namespace OpenRA
 			IReadOnlyDictionary<string, SoundInfo> notifications,
 			IReadOnlyDictionary<string, MusicInfo> music,
 			TileSet tileSet,
-			SequenceProvider sequences,
-			IReadOnlyDictionary<string, MiniYamlNode> modelSequences)
+			SequenceProvider sequences)
 		{
 			Actors = actors;
 			Weapons = weapons;
@@ -48,7 +46,6 @@ namespace OpenRA
 			Music = music;
 			TileSet = tileSet;
 			Sequences = sequences;
-			ModelSequences = modelSequences;

 			foreach (var a in Actors.Values)
 			{
@@ -67,19 +64,6 @@ namespace OpenRA

 			foreach (var weapon in Weapons)
 			{
-				var projectileLoaded = weapon.Value.Projectile as IRulesetLoaded<WeaponInfo>;
-				if (projectileLoaded != null)
-				{
-					try
-					{
-						projectileLoaded.RulesetLoaded(this, weapon.Value);
-					}
-					catch (YamlException e)
-					{
-						throw new YamlException("Projectile type {0}: {1}".F(weapon.Key, e.Message));
-					}
-				}
-
 				foreach (var warhead in weapon.Value.Warheads)
 				{
 					var cacher = warhead as IRulesetLoaded<WeaponInfo>;
@@ -100,24 +84,16 @@ namespace OpenRA

 		public IEnumerable<KeyValuePair<string, MusicInfo>> InstalledMusic { get { return Music.Where(m => m.Value.Exists); } }

-		static IReadOnlyDictionary<string, T> MergeOrDefault<T>(string name,
-			IReadOnlyFileSystem fileSystem,
-			IEnumerable<string> files,
-			MiniYaml additional,
-			IReadOnlyDictionary<string, T> defaults,
-			Func<MiniYamlNode, T> makeObject,
-			Func<MiniYamlNode, bool> filterNode = null)
+		static IReadOnlyDictionary<string, T> MergeOrDefault<T>(string name, IReadOnlyFileSystem fileSystem, IEnumerable<string> files, MiniYaml additional,
+			IReadOnlyDictionary<string, T> defaults, Func<MiniYamlNode, T> makeObject)
 		{
 			if (additional == null && defaults != null)
 				return defaults;

-			IEnumerable<MiniYamlNode> yamlNodes = MiniYaml.Load(fileSystem, files, additional);
+			var result = MiniYaml.Load(fileSystem, files, additional)
+				.ToDictionaryWithConflictLog(k => k.Key.ToLowerInvariant(), makeObject, "LoadFromManifest<" + name + ">");

-			// Optionally, the caller can filter out elements from the loaded set of nodes. Default behavior is unfiltered.
-			if (filterNode != null)
-				yamlNodes = yamlNodes.Where(k => !filterNode(k));
-
-			return new ReadOnlyDictionary<string, T>(yamlNodes.ToDictionaryWithConflictLog(k => k.Key.ToLowerInvariant(), makeObject, "LoadFromManifest<" + name + ">"));
+			return new ReadOnlyDictionary<string, T>(result);
 		}

 		public static Ruleset LoadDefaults(ModData modData)
@@ -129,8 +105,7 @@ namespace OpenRA
 			Action f = () =>
 			{
 				var actors = MergeOrDefault("Manifest,Rules", fs, m.Rules, null, null,
-					k => new ActorInfo(modData.ObjectCreator, k.Key.ToLowerInvariant(), k.Value),
-					filterNode: n => n.Key.StartsWith(ActorInfo.AbstractActorPrefix, StringComparison.Ordinal));
+					k => new ActorInfo(modData.ObjectCreator, k.Key.ToLowerInvariant(), k.Value));

 				var weapons = MergeOrDefault("Manifest,Weapons", fs, m.Weapons, null, null,
 					k => new WeaponInfo(k.Key.ToLowerInvariant(), k.Value));
@@ -144,11 +119,8 @@ namespace OpenRA
 				var music = MergeOrDefault("Manifest,Music", fs, m.Music, null, null,
 					k => new MusicInfo(k.Key, k.Value));

-				var modelSequences = MergeOrDefault("Manifest,ModelSequences", fs, m.ModelSequences, null, null,
-					k => k);
-
 				// The default ruleset does not include a preferred tileset or sequence set
-				ruleset = new Ruleset(actors, weapons, voices, notifications, music, null, null, modelSequences);
+				ruleset = new Ruleset(actors, weapons, voices, notifications, music, null, null);
 			};

 			if (modData.IsOnMainThread)
@@ -173,13 +145,12 @@ namespace OpenRA
 			var dr = modData.DefaultRules;
 			var ts = modData.DefaultTileSets[tileSet];
 			var sequences = modData.DefaultSequences[tileSet];
-
-			return new Ruleset(dr.Actors, dr.Weapons, dr.Voices, dr.Notifications, dr.Music, ts, sequences, dr.ModelSequences);
+			return new Ruleset(dr.Actors, dr.Weapons, dr.Voices, dr.Notifications, dr.Music, ts, sequences);
 		}

 		public static Ruleset Load(ModData modData, IReadOnlyFileSystem fileSystem, string tileSet,
 			MiniYaml mapRules, MiniYaml mapWeapons, MiniYaml mapVoices, MiniYaml mapNotifications,
-			MiniYaml mapMusic, MiniYaml mapSequences, MiniYaml mapModelSequences)
+			MiniYaml mapMusic, MiniYaml mapSequences)
 		{
 			var m = modData.Manifest;
 			var dr = modData.DefaultRules;
@@ -188,8 +159,7 @@ namespace OpenRA
 			Action f = () =>
 			{
 				var actors = MergeOrDefault("Rules", fileSystem, m.Rules, mapRules, dr.Actors,
-					k => new ActorInfo(modData.ObjectCreator, k.Key.ToLowerInvariant(), k.Value),
-					filterNode: n => n.Key.StartsWith(ActorInfo.AbstractActorPrefix, StringComparison.Ordinal));
+					k => new ActorInfo(modData.ObjectCreator, k.Key.ToLowerInvariant(), k.Value));

 				var weapons = MergeOrDefault("Weapons", fileSystem, m.Weapons, mapWeapons, dr.Weapons,
 					k => new WeaponInfo(k.Key.ToLowerInvariant(), k.Value));
@@ -210,12 +180,8 @@ namespace OpenRA
 				var sequences = mapSequences == null ? modData.DefaultSequences[tileSet] :
 					new SequenceProvider(fileSystem, modData, ts, mapSequences);

-				var modelSequences = dr.ModelSequences;
-				if (mapModelSequences != null)
-					modelSequences = MergeOrDefault("ModelSequences", fileSystem, m.ModelSequences, mapModelSequences, dr.ModelSequences,
-						k => k);
-
-				ruleset = new Ruleset(actors, weapons, voices, notifications, music, ts, sequences, modelSequences);
+				// TODO: Add support for custom voxel sequences
+				ruleset = new Ruleset(actors, weapons, voices, notifications, music, ts, sequences);
 			};

 			if (modData.IsOnMainThread)
@@ -250,13 +216,10 @@ namespace OpenRA
 					{
 						var traitName = traitNode.Key.Split('@')[0];
 						var traitType = modData.ObjectCreator.FindType(traitName + "Info");
-						if (traitType != null && traitType.GetInterface("ILobbyCustomRulesIgnore") == null)
+						if (traitType.GetInterface("ILobbyCustomRulesIgnore") == null)
 							return true;
 					}
-					catch (Exception ex)
-					{
-						Log.Write("debug", "Error in AnyFlaggedTraits\r\n" + ex.ToString());
-					}
+					catch { }
 				}
 			}

@@ -267,7 +230,7 @@ namespace OpenRA
 			MiniYaml mapRules, MiniYaml mapWeapons, MiniYaml mapVoices, MiniYaml mapNotifications, MiniYaml mapSequences)
 		{
 			// Maps that define any weapon, voice, notification, or sequence overrides are always flagged
-			if (AnyCustomYaml(mapWeapons) || AnyCustomYaml(mapVoices) || AnyCustomYaml(mapNotifications) || AnyCustomYaml(mapSequences))
+			if (AnyCustomYaml(mapWeapons) || AnyCustomYaml(mapVoices) || AnyCustomYaml(mapNotifications) ||	AnyCustomYaml(mapSequences))
 				return true;

 			// Any trait overrides that aren't explicitly whitelisted are flagged
--- a/OpenRA.Game/GameRules/SoundInfo.cs
+++ b/OpenRA.Game/GameRules/SoundInfo.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -33,39 +33,18 @@ namespace OpenRA.GameRules
 		{
 			FieldLoader.Load(this, y);

-			VoicePools = Exts.Lazy(() => Voices.ToDictionary(a => a.Key, a => new SoundPool(1f, a.Value)));
-			NotificationsPools = Exts.Lazy(() => ParseSoundPool(y, "Notifications"));
-		}
-
-		Dictionary<string, SoundPool> ParseSoundPool(MiniYaml y, string key)
-		{
-			var ret = new Dictionary<string, SoundPool>();
-			var classifiction = y.Nodes.First(x => x.Key == key);
-			foreach (var t in classifiction.Value.Nodes)
-			{
-				var volumeModifier = 1f;
-				var volumeModifierNode = t.Value.Nodes.FirstOrDefault(x => x.Key == "VolumeModifier");
-				if (volumeModifierNode != null)
-					volumeModifier = FieldLoader.GetValue<float>(volumeModifierNode.Key, volumeModifierNode.Value.Value);
-
-				var names = FieldLoader.GetValue<string[]>(t.Key, t.Value.Value);
-				var sp = new SoundPool(volumeModifier, names);
-				ret.Add(t.Key, sp);
-			}
-
-			return ret;
+			VoicePools = Exts.Lazy(() => Voices.ToDictionary(a => a.Key, a => new SoundPool(a.Value)));
+			NotificationsPools = Exts.Lazy(() => Notifications.ToDictionary(a => a.Key, a => new SoundPool(a.Value)));
 		}
 	}

 	public class SoundPool
 	{
-		public readonly float VolumeModifier;
 		readonly string[] clips;
 		readonly List<string> liveclips = new List<string>();

-		public SoundPool(float volumeModifier, params string[] clips)
+		public SoundPool(params string[] clips)
 		{
-			VolumeModifier = volumeModifier;
 			this.clips = clips;
 		}

@@ -74,9 +53,8 @@ namespace OpenRA.GameRules
 			if (liveclips.Count == 0)
 				liveclips.AddRange(clips);

-			// Avoid crashing if there's no clips at all
 			if (liveclips.Count == 0)
-				return null;
+				return null;		/* avoid crashing if there's no clips at all */

 			var i = Game.CosmeticRandom.Next(liveclips.Count);
 			var s = liveclips[i];
--- a/OpenRA.Game/GameRules/WeaponInfo.cs
+++ b/OpenRA.Game/GameRules/WeaponInfo.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -13,7 +13,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using OpenRA.Effects;
-using OpenRA.Primitives;
 using OpenRA.Traits;

 namespace OpenRA.GameRules
@@ -25,7 +24,6 @@ namespace OpenRA.GameRules
 		public int[] InaccuracyModifiers;
 		public int[] RangeModifiers;
 		public int Facing;
-		public Func<int> CurrentMuzzleFacing;
 		public WPos Source;
 		public Func<WPos> CurrentSource;
 		public Actor SourceActor;
@@ -41,24 +39,9 @@ namespace OpenRA.GameRules
 		[Desc("The maximum range the weapon can fire.")]
 		public readonly WDist Range = WDist.Zero;

-		[Desc("First burst is aimed at this offset relative to target position.")]
-		public readonly WVec FirstBurstTargetOffset = WVec.Zero;
-
-		[Desc("Each burst after the first lands by this offset away from the previous burst.")]
-		public readonly WVec FollowingBurstTargetOffset = WVec.Zero;
-
-		[Desc("The sound played each time the weapon is fired.")]
+		[Desc("The sound played when the weapon is fired.")]
 		public readonly string[] Report = null;

-		[Desc("Sound played only on first burst in a salvo.")]
-		public readonly string[] StartBurstReport = null;
-
-		[Desc("The sound played when the weapon is reloaded.")]
-		public readonly string[] AfterFireSound = null;
-
-		[Desc("Delay in ticks to play reloading sound.")]
-		public readonly int AfterFireSoundDelay = 0;
-
 		[Desc("Delay in ticks between reloading ammo magazines.")]
 		public readonly int ReloadDelay = 1;

@@ -66,21 +49,17 @@ namespace OpenRA.GameRules
 		public readonly int Burst = 1;

 		[Desc("What types of targets are affected.")]
-		public readonly BitSet<TargetableType> ValidTargets = new BitSet<TargetableType>("Ground", "Water");
+		public readonly HashSet<string> ValidTargets = new HashSet<string> { "Ground", "Water" };

 		[Desc("What types of targets are unaffected.", "Overrules ValidTargets.")]
-		public readonly BitSet<TargetableType> InvalidTargets;
+		public readonly HashSet<string> InvalidTargets = new HashSet<string>();

-		[Desc("Delay in ticks between firing shots from the same ammo magazine. If one entry, it will be used for all bursts.",
-			"If multiple entries, their number needs to match Burst - 1.")]
-		public readonly int[] BurstDelays = { 5 };
+		[Desc("Delay in ticks between firing shots from the same ammo magazine.")]
+		public readonly int BurstDelay = 5;

 		[Desc("The minimum range the weapon can fire.")]
 		public readonly WDist MinRange = WDist.Zero;

-		[Desc("Does this weapon aim at the target's center regardless of other targetable offsets?")]
-		public readonly bool TargetActorCenter = false;
-
 		[FieldLoader.LoadUsing("LoadProjectile")]
 		public readonly IProjectileInfo Projectile;

@@ -89,9 +68,6 @@ namespace OpenRA.GameRules

 		public WeaponInfo(string name, MiniYaml content)
 		{
-			// Resolve any weapon-level yaml inheritance or removals
-			// HACK: The "Defaults" sequence syntax prevents us from doing this generally during yaml parsing
-			content.Nodes = MiniYaml.Merge(new[] { content.Nodes });
 			FieldLoader.Load(this, content);
 		}

@@ -118,7 +94,7 @@ namespace OpenRA.GameRules
 			return retList;
 		}

-		public bool IsValidTarget(BitSet<TargetableType> targetTypes)
+		public bool IsValidTarget(IEnumerable<string> targetTypes)
 		{
 			return ValidTargets.Overlaps(targetTypes) && !InvalidTargets.Overlaps(targetTypes);
 		}
@@ -183,10 +159,11 @@ namespace OpenRA.GameRules
 			{
 				var wh = warhead; // force the closure to bind to the current warhead

+				Action a = () => wh.DoImpact(target, firedBy, damageModifiers);
 				if (wh.Delay > 0)
-					firedBy.World.AddFrameEndTask(w => w.Add(new DelayedImpact(wh.Delay, wh, target, firedBy, damageModifiers)));
+					firedBy.World.AddFrameEndTask(w => w.Add(new DelayedAction(wh.Delay, a)));
 				else
-					wh.DoImpact(target, firedBy, damageModifiers);
+					a();
 			}
 		}
 	}
--- a/OpenRA.Game/GameSpeed.cs
+++ b/OpenRA.Game/GameSpeed.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/GlobalChat.cs
+++ b/OpenRA.Game/GlobalChat.cs
@@ -0,0 +1,391 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections;
+using System.Linq;
+using System.Threading;
+using Meebey.SmartIrc4net;
+using OpenRA.Primitives;
+
+namespace OpenRA.Chat
+{
+	public enum ChatConnectionStatus { Disconnected, Connecting, Connected, Disconnecting, Joined, Error }
+	public enum ChatMessageType { Message, Notification }
+
+	public sealed class ChatUser
+	{
+		public readonly string Name;
+		public bool IsOp;
+		public bool IsVoiced;
+
+		public ChatUser(string name, bool isOp, bool isVoice)
+		{
+			Name = name;
+			IsOp = isOp;
+			IsVoiced = isVoice;
+		}
+	}
+
+	public sealed class ChatMessage
+	{
+		static long nextUID;
+
+		public readonly DateTime Time;
+		public readonly ChatMessageType Type;
+		public readonly string Nick;
+		public readonly string Message;
+		public readonly string UID;
+
+		public ChatMessage(DateTime time, ChatMessageType type, string nick, string message)
+		{
+			Time = time;
+			Type = type;
+			Nick = nick;
+			Message = message;
+
+			UID = Interlocked.Increment(ref nextUID).ToString();
+		}
+
+		public override string ToString()
+		{
+			var time = Time.ToString(Game.Settings.Chat.TimestampFormat);
+			if (Type == ChatMessageType.Notification)
+				return "{0} {1}".F(time, Message);
+
+			return "{0} {1}: {2}".F(time, Nick, Message);
+		}
+	}
+
+	public sealed class GlobalChat : IDisposable
+	{
+		readonly IrcClient client = new IrcClient();
+		volatile Channel channel;
+
+		public readonly ObservableSortedDictionary<string, ChatUser> Users = new ObservableSortedDictionary<string, ChatUser>(StringComparer.InvariantCultureIgnoreCase);
+		public readonly ObservableList<ChatMessage> History = new ObservableList<ChatMessage>();
+
+		volatile string topic;
+		public string Topic { get { return topic; } }
+
+		volatile ChatConnectionStatus connectionStatus = ChatConnectionStatus.Disconnected;
+		public ChatConnectionStatus ConnectionStatus { get { return connectionStatus; } }
+
+		public GlobalChat()
+		{
+			client.Encoding = System.Text.Encoding.UTF8;
+			client.SendDelay = 100;
+			client.ActiveChannelSyncing = true;
+
+			client.OnConnecting += OnConnecting;
+			client.OnConnected += OnConnected;
+			client.OnDisconnecting += OnDisconnecting;
+			client.OnDisconnected += OnDisconnected;
+			client.OnError += OnError;
+			client.OnKick += OnKick;
+
+			client.OnRawMessage += (_, e) => Game.RunAfterTick(() => Log.Write("irc", e.Data.RawMessage));
+			client.OnJoin += OnJoin;
+			client.OnChannelActiveSynced += OnChannelActiveSynced;
+			client.OnTopic += (_, e) => topic = e.Topic;
+			client.OnTopicChange += (_, e) => topic = e.NewTopic;
+			client.OnNickChange += OnNickChange;
+
+			client.OnChannelMessage += (_, e) => AddMessage(e.Data.Nick, e.Data.Message);
+			client.OnOp += (_, e) => SetUserOp(e.Whom, true);
+			client.OnDeop += (_, e) => SetUserOp(e.Whom, false);
+			client.OnVoice += (_, e) => SetUserVoiced(e.Whom, true);
+			client.OnDevoice += (_, e) => SetUserVoiced(e.Whom, false);
+			client.OnPart += OnPart;
+			client.OnQuit += OnQuit;
+
+			TrySetNickname(Game.Settings.Player.Name);
+		}
+
+		void SetUserOp(string whom, bool isOp)
+		{
+			Game.RunAfterTick(() =>
+			{
+				ChatUser user;
+				if (Users.TryGetValue(whom, out user))
+					user.IsOp = isOp;
+			});
+		}
+
+		void SetUserVoiced(string whom, bool isVoiced)
+		{
+			Game.RunAfterTick(() =>
+			{
+				ChatUser user;
+				if (Users.TryGetValue(whom, out user))
+					user.IsVoiced = isVoiced;
+			});
+		}
+
+		public void Connect()
+		{
+			if (client.IsConnected)
+				return;
+
+			new Thread(() =>
+			{
+				try
+				{
+					client.Connect(Game.Settings.Chat.Hostname, Game.Settings.Chat.Port);
+				}
+				catch (Exception e)
+				{
+					connectionStatus = ChatConnectionStatus.Error;
+					AddNotification(e.Message);
+					Game.RunAfterTick(() => Log.Write("irc", e.ToString()));
+
+					return;
+				}
+
+				client.Listen();
+			}) { Name = "IrcListenThread", IsBackground = true }.Start();
+		}
+
+		void AddNotification(string text)
+		{
+			var message = new ChatMessage(DateTime.Now, ChatMessageType.Notification, null, text);
+			Game.RunAfterTick(() =>
+			{
+				History.Add(message);
+				Log.Write("irc", text);
+			});
+		}
+
+		void AddMessage(string nick, string text)
+		{
+			var message = new ChatMessage(DateTime.Now, ChatMessageType.Message, nick, text);
+			Game.RunAfterTick(() =>
+			{
+				History.Add(message);
+				Log.Write("irc", text);
+			});
+		}
+
+		void OnConnecting(object sender, EventArgs e)
+		{
+			AddNotification("Connecting to {0}:{1}...".F(Game.Settings.Chat.Hostname, Game.Settings.Chat.Port));
+			connectionStatus = ChatConnectionStatus.Connecting;
+		}
+
+		void OnConnected(object sender, EventArgs e)
+		{
+			AddNotification("Connected.");
+			connectionStatus = ChatConnectionStatus.Connected;
+
+			// Guard against settings.yaml modification
+			var nick = SanitizedName(Game.Settings.Chat.Nickname);
+			if (nick != Game.Settings.Chat.Nickname)
+				Game.RunAfterTick(() => Game.Settings.Chat.Nickname = nick);
+
+			client.Login(nick, "in-game IRC client", 0, "OpenRA");
+			client.RfcJoin("#" + Game.Settings.Chat.Channel);
+		}
+
+		void OnDisconnecting(object sender, EventArgs e)
+		{
+			if (connectionStatus != ChatConnectionStatus.Error)
+				connectionStatus = ChatConnectionStatus.Disconnecting;
+		}
+
+		void OnDisconnected(object sender, EventArgs e)
+		{
+			Game.RunAfterTick(Users.Clear);
+
+			// Keep the chat window open if there is an error
+			// It will be cleared by the Disconnect button
+			if (connectionStatus != ChatConnectionStatus.Error)
+			{
+				Game.RunAfterTick(History.Clear);
+				topic = null;
+				connectionStatus = ChatConnectionStatus.Disconnected;
+			}
+		}
+
+		void OnError(object sender, ErrorEventArgs e)
+		{
+			// Ignore any errors that happen during disconnect
+			if (connectionStatus != ChatConnectionStatus.Disconnecting)
+			{
+				connectionStatus = ChatConnectionStatus.Error;
+				AddNotification("Error: " + e.ErrorMessage);
+			}
+		}
+
+		void OnKick(object sender, KickEventArgs e)
+		{
+			if (e.Whom == client.Nickname)
+			{
+				Disconnect();
+				connectionStatus = ChatConnectionStatus.Error;
+				AddNotification("You were kicked from the chat by {0}. ({1})".F(e.Who, e.KickReason));
+			}
+			else
+			{
+				Users.Remove(e.Whom);
+				AddNotification("{0} was kicked from the chat by {1}. ({2})".F(e.Whom, e.Who, e.KickReason));
+			}
+		}
+
+		void OnJoin(object sender, JoinEventArgs e)
+		{
+			if (e.Who == client.Nickname || channel == null || e.Channel != channel.Name)
+				return;
+
+			AddNotification("{0} joined the chat.".F(e.Who));
+			Game.RunAfterTick(() => Users.Add(e.Who, new ChatUser(e.Who, false, false)));
+		}
+
+		void OnChannelActiveSynced(object sender, IrcEventArgs e)
+		{
+			channel = client.GetChannel(e.Data.Channel);
+			AddNotification("{0} users online".F(channel.Users.Count));
+			connectionStatus = ChatConnectionStatus.Joined;
+
+			foreach (DictionaryEntry user in channel.Users)
+			{
+				var u = (ChannelUser)user.Value;
+				Game.RunAfterTick(() => Users.Add(u.Nick, new ChatUser(u.Nick, u.IsOp, u.IsVoice)));
+			}
+		}
+
+		void OnNickChange(object sender, NickChangeEventArgs e)
+		{
+			AddNotification("{0} is now known as {1}.".F(e.OldNickname, e.NewNickname));
+
+			Game.RunAfterTick(() =>
+			{
+				ChatUser user;
+				if (!Users.TryGetValue(e.OldNickname, out user))
+					return;
+
+				Users.Remove(e.OldNickname);
+				Users.Add(e.NewNickname, new ChatUser(e.NewNickname, user.IsOp, user.IsVoiced));
+			});
+		}
+
+		void OnQuit(object sender, QuitEventArgs e)
+		{
+			AddNotification("{0} left the chat.".F(e.Who));
+			Game.RunAfterTick(() => Users.Remove(e.Who));
+		}
+
+		void OnPart(object sender, PartEventArgs e)
+		{
+			if (channel == null || e.Data.Channel != channel.Name)
+				return;
+
+			AddNotification("{0} left the chat.".F(e.Who));
+			Game.RunAfterTick(() => Users.Remove(e.Who));
+		}
+
+		public string SanitizedName(string dirty)
+		{
+			if (string.IsNullOrEmpty(dirty))
+				return null;
+
+			// There is no need to mangle the nick if it is already valid
+			if (Rfc2812.IsValidNickname(dirty))
+				return dirty;
+
+			// TODO: some special chars are allowed as well, but not at every position
+			var clean = new string(dirty.Where(c => char.IsLetterOrDigit(c)).ToArray());
+
+			if (string.IsNullOrEmpty(clean))
+				return null;
+
+			if (char.IsDigit(clean[0]))
+				return SanitizedName(clean.Substring(1));
+
+			// Source: https://tools.ietf.org/html/rfc2812#section-1.2.1
+			if (clean.Length > 9)
+				clean = clean.Substring(0, 9);
+
+			return clean;
+		}
+
+		public bool IsValidNickname(string name)
+		{
+			return Rfc2812.IsValidNickname(name);
+		}
+
+		public void SendMessage(string text)
+		{
+			if (connectionStatus != ChatConnectionStatus.Joined)
+				return;
+
+			// Guard against a last-moment disconnection
+			try
+			{
+				client.SendMessage(SendType.Message, channel.Name, text);
+				AddMessage(client.Nickname, text);
+			}
+			catch (NotConnectedException) { }
+		}
+
+		public bool TrySetNickname(string nick)
+		{
+			// TODO: This is inconsistent with the other check
+			if (Rfc2812.IsValidNickname(nick))
+			{
+				client.RfcNick(nick);
+				Game.Settings.Chat.Nickname = nick;
+				return true;
+			}
+
+			return false;
+		}
+
+		public void Disconnect()
+		{
+			// Error is an alias for disconnect, but keeps the panel open
+			// so that clients can see the error
+			if (connectionStatus == ChatConnectionStatus.Error)
+			{
+				Game.RunAfterTick(History.Clear);
+				topic = null;
+				connectionStatus = ChatConnectionStatus.Disconnected;
+			}
+			else
+				connectionStatus = ChatConnectionStatus.Disconnecting;
+
+			if (!client.IsConnected)
+				return;
+
+			client.RfcQuit(Game.Settings.Chat.QuitMessage);
+
+			AddNotification("Disconnecting from {0}...".F(client.Address));
+
+			Game.RunAfterTick(() => Game.Settings.Chat.ConnectAutomatically = false);
+		}
+
+		public void Dispose()
+		{
+			// HACK: The IRC library we are using has terrible thread-handling code that relies on Thread.Abort.
+			// There is a thread reading from the network socket which is aborted, however on Windows this is inside
+			// native code so this abort call hangs until the network socket reads something and returns to managed
+			// code where it can then be aborted.
+			//
+			// This means we may hang for several seconds during shutdown (until we receive something over IRC!) before
+			// closing.
+			//
+			// Since our IRC client currently lives forever, the only time we call this Dispose method is during the
+			// shutdown of our process. Therefore, we can work around the problem by just not bothering to disconnect
+			// properly. Since our process is about to die anyway, it's not like anyone will care.
+			////if (client.IsConnected)
+			////	client.Disconnect();
+		}
+	}
+}
--- a/OpenRA.Game/Graphics/Animation.cs
+++ b/OpenRA.Game/Graphics/Animation.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,8 +10,8 @@
 #endregion

 using System;
+using System.Collections.Generic;
 using System.Linq;
-using OpenRA.Primitives;
 using OpenRA.Support;

 namespace OpenRA.Graphics
@@ -49,10 +49,10 @@ namespace OpenRA.Graphics
 			this.paused = paused;
 		}

-		public int CurrentFrame { get { return backwards ? CurrentSequence.Length - frame - 1 : frame; } }
+		public int CurrentFrame { get { return backwards ? CurrentSequence.Start + CurrentSequence.Length - frame - 1 : frame; } }
 		public Sprite Image { get { return CurrentSequence.GetSprite(CurrentFrame, facingFunc()); } }

-		public IRenderable[] Render(WPos pos, WVec offset, int zOffset, PaletteReference palette, float scale)
+		public IEnumerable<IRenderable> Render(WPos pos, WVec offset, int zOffset, PaletteReference palette, float scale)
 		{
 			var imageRenderable = new SpriteRenderable(Image, pos, offset, CurrentSequence.ZOffset + zOffset, palette, scale, IsDecoration);

@@ -66,18 +66,7 @@ namespace OpenRA.Graphics
 			return new IRenderable[] { imageRenderable };
 		}

-		public Rectangle ScreenBounds(WorldRenderer wr, WPos pos, WVec offset, float scale)
-		{
-			var xy = wr.ScreenPxPosition(pos) + wr.ScreenPxOffset(offset);
-			var cb = CurrentSequence.Bounds;
-			return Rectangle.FromLTRB(
-				xy.X + (int)(cb.Left * scale),
-				xy.Y + (int)(cb.Top * scale),
-				xy.X + (int)(cb.Right * scale),
-				xy.Y + (int)(cb.Bottom * scale));
-		}
-
-		public IRenderable[] Render(WPos pos, PaletteReference palette)
+		public IEnumerable<IRenderable> Render(WPos pos, PaletteReference palette)
 		{
 			return Render(pos, WVec.Zero, 0, palette, 1f);
 		}
--- a/OpenRA.Game/Graphics/AnimationWithOffset.cs
+++ b/OpenRA.Game/Graphics/AnimationWithOffset.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,7 +10,7 @@
 #endregion

 using System;
-using OpenRA.Primitives;
+using System.Collections.Generic;

 namespace OpenRA.Graphics
 {
@@ -35,7 +35,7 @@ namespace OpenRA.Graphics
 			ZOffset = zOffset;
 		}

-		public IRenderable[] Render(Actor self, WorldRenderer wr, PaletteReference pal, float scale)
+		public IEnumerable<IRenderable> Render(Actor self, WorldRenderer wr, PaletteReference pal, float scale)
 		{
 			var center = self.CenterPosition;
 			var offset = OffsetFunc != null ? OffsetFunc() : WVec.Zero;
@@ -44,17 +44,9 @@ namespace OpenRA.Graphics
 			return Animation.Render(center, offset, z, pal, scale);
 		}

-		public Rectangle ScreenBounds(Actor self, WorldRenderer wr, float scale)
-		{
-			var center = self.CenterPosition;
-			var offset = OffsetFunc != null ? OffsetFunc() : WVec.Zero;
-
-			return Animation.ScreenBounds(wr, center, offset, scale);
-		}
-
 		public static implicit operator AnimationWithOffset(Animation a)
 		{
 			return new AnimationWithOffset(a, null, null, null);
 		}
 	}
-}
+}
--- a/OpenRA.Game/Graphics/ChromeProvider.cs
+++ b/OpenRA.Game/Graphics/ChromeProvider.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/Graphics/CursorProvider.cs
+++ b/OpenRA.Game/Graphics/CursorProvider.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -12,7 +12,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using OpenRA.Traits;

 namespace OpenRA.Graphics
 {
@@ -27,18 +26,21 @@ namespace OpenRA.Graphics
 			var sequenceYaml = MiniYaml.Merge(modData.Manifest.Cursors.Select(
 				s => MiniYaml.FromStream(fileSystem.Open(s), s)));

+			var shadowIndex = new int[] { };
+
 			var nodesDict = new MiniYaml(null, sequenceYaml).ToDictionary();
+			if (nodesDict.ContainsKey("ShadowIndex"))
+			{
+				Array.Resize(ref shadowIndex, shadowIndex.Length + 1);
+				Exts.TryParseIntegerInvariant(nodesDict["ShadowIndex"].Value,
+					out shadowIndex[shadowIndex.Length - 1]);
+			}

-			// Overwrite previous definitions if there are duplicates
-			var pals = new Dictionary<string, IProvidesCursorPaletteInfo>();
-			foreach (var p in modData.DefaultRules.Actors["world"].TraitInfos<IProvidesCursorPaletteInfo>())
-				if (p.Palette != null)
-					pals[p.Palette] = p;
+			var palettes = new Dictionary<string, ImmutablePalette>();
+			foreach (var p in nodesDict["Palettes"].Nodes)
+				palettes.Add(p.Key, new ImmutablePalette(fileSystem.Open(p.Value.Value), shadowIndex));

-			Palettes = nodesDict["Cursors"].Nodes.Select(n => n.Value.Value)
-				.Distinct()
-				.ToDictionary(p => p, p => pals[p].ReadPalette(modData.DefaultFileSystem))
-				.AsReadOnly();
+			Palettes = palettes.AsReadOnly();

 			var frameCache = new FrameCache(fileSystem, modData.SpriteLoaders);
 			var cursors = new Dictionary<string, CursorSequence>();
--- a/OpenRA.Game/Graphics/CursorSequence.cs
+++ b/OpenRA.Game/Graphics/CursorSequence.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/Graphics/HSLColor.cs
+++ b/OpenRA.Game/Graphics/HSLColor.cs
@@ -0,0 +1,146 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Drawing;
+using System.Globalization;
+using OpenRA.Scripting;
+
+namespace OpenRA.Graphics
+{
+	public struct HSLColor : IScriptBindable
+	{
+		public readonly byte H;
+		public readonly byte S;
+		public readonly byte L;
+		public readonly Color RGB;
+
+		public static HSLColor FromHSV(float h, float s, float v)
+		{
+			var ll = 0.5f * (2 - s) * v;
+			var ss = (ll >= 1 || v <= 0) ? 0 : 0.5f * s * v / (ll <= 0.5f ? ll : 1 - ll);
+			return new HSLColor((byte)(255 * h), (byte)(255 * ss), (byte)(255 * ll));
+		}
+
+		public HSLColor(Color color)
+		{
+			RGB = color;
+			H = (byte)((color.GetHue() / 360.0f) * 255);
+			S = (byte)(color.GetSaturation() * 255);
+			L = (byte)(color.GetBrightness() * 255);
+		}
+
+		public static HSLColor FromRGB(int r, int g, int b)
+		{
+			return new HSLColor(Color.FromArgb(r, g, b));
+		}
+
+		public static Color RGBFromHSL(float h, float s, float l)
+		{
+			// Convert from HSL to RGB
+			var q = (l < 0.5f) ? l * (1 + s) : l + s - (l * s);
+			var p = 2 * l - q;
+
+			float[] trgb = { h + 1 / 3.0f, h, h - 1 / 3.0f };
+			float[] rgb = { 0, 0, 0 };
+
+			for (var k = 0; k < 3; k++)
+			{
+				while (trgb[k] < 0) trgb[k] += 1.0f;
+				while (trgb[k] > 1) trgb[k] -= 1.0f;
+			}
+
+			for (var k = 0; k < 3; k++)
+			{
+				if (trgb[k] < 1 / 6.0f)
+					rgb[k] = p + ((q - p) * 6 * trgb[k]);
+				else if (trgb[k] >= 1 / 6.0f && trgb[k] < 0.5)
+					rgb[k] = q;
+				else if (trgb[k] >= 0.5f && trgb[k] < 2.0f / 3)
+					rgb[k] = p + ((q - p) * 6 * (2.0f / 3 - trgb[k]));
+				else
+					rgb[k] = p;
+			}
+
+			return Color.FromArgb((int)(rgb[0] * 255), (int)(rgb[1] * 255), (int)(rgb[2] * 255));
+		}
+
+		public static bool TryParseRGB(string value, out Color color)
+		{
+			color = new Color();
+			value = value.Trim();
+			if (value.Length != 6 && value.Length != 8)
+				return false;
+
+			byte red, green, blue, alpha = 255;
+			if (!byte.TryParse(value.Substring(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out red)
+				|| !byte.TryParse(value.Substring(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out green)
+				|| !byte.TryParse(value.Substring(4, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out blue))
+				return false;
+
+			if (value.Length == 8
+				&& !byte.TryParse(value.Substring(6, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out alpha))
+				return false;
+
+			color = Color.FromArgb(alpha, red, green, blue);
+			return true;
+		}
+
+		public static bool operator ==(HSLColor me, HSLColor other)
+		{
+			return me.H == other.H && me.S == other.S && me.L == other.L;
+		}
+
+		public static bool operator !=(HSLColor me, HSLColor other) { return !(me == other); }
+
+		public HSLColor(byte h, byte s, byte l)
+		{
+			H = h;
+			S = s;
+			L = l;
+			RGB = RGBFromHSL(H / 255f, S / 255f, L / 255f);
+		}
+
+		public void ToHSV(out float h, out float s, out float v)
+		{
+			var ll = 2 * L / 255f;
+			var ss = S / 255f * ((ll <= 1) ? ll : 2 - ll);
+
+			h = H / 255f;
+			s = (2 * ss) / (ll + ss);
+			v = (ll + ss) / 2;
+		}
+
+		public override string ToString()
+		{
+			return "{0},{1},{2}".F(H, S, L);
+		}
+
+		public static string ToHexString(Color color)
+		{
+			if (color.A == 255)
+				return color.R.ToString("X2") + color.G.ToString("X2") + color.B.ToString("X2");
+			return color.R.ToString("X2") + color.G.ToString("X2") + color.B.ToString("X2") + color.A.ToString("X2");
+		}
+
+		public string ToHexString()
+		{
+			return ToHexString(RGB);
+		}
+
+		public override int GetHashCode() { return H.GetHashCode() ^ S.GetHashCode() ^ L.GetHashCode(); }
+
+		public override bool Equals(object obj)
+		{
+			var o = obj as HSLColor?;
+			return o != null && o == this;
+		}
+	}
+}
--- a/OpenRA.Game/Graphics/HardwareCursor.cs
+++ b/OpenRA.Game/Graphics/HardwareCursor.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,8 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
-using OpenRA.Primitives;

 namespace OpenRA.Graphics
 {
@@ -20,26 +20,12 @@ namespace OpenRA.Graphics
 	{
 		readonly Dictionary<string, IHardwareCursor[]> hardwareCursors = new Dictionary<string, IHardwareCursor[]>();
 		readonly CursorProvider cursorProvider;
-		readonly Dictionary<string, Sprite[]> sprites = new Dictionary<string, Sprite[]>();
-		readonly SheetBuilder sheetBuilder;
-		readonly HardwarePalette hardwarePalette = new HardwarePalette();
-		readonly Cache<string, PaletteReference> paletteReferences;
-
 		CursorSequence cursor;
-		bool isLocked = false;
-		int2 lockedPosition;

 		public HardwareCursor(CursorProvider cursorProvider)
 		{
 			this.cursorProvider = cursorProvider;

-			paletteReferences = new Cache<string, PaletteReference>(CreatePaletteReference);
-			foreach (var p in cursorProvider.Palettes)
-				hardwarePalette.AddPalette(p.Key, p.Value, false);
-
-			hardwarePalette.Initialize();
-
-			sheetBuilder = new SheetBuilder(SheetType.Indexed);
 			foreach (var kv in cursorProvider.Cursors)
 			{
 				var palette = cursorProvider.Palettes[kv.Value.Palette];
@@ -48,22 +34,11 @@ namespace OpenRA.Graphics
 					.ToArray();

 				hardwareCursors.Add(kv.Key, hc);
-
-				var s = kv.Value.Frames.Select(a => sheetBuilder.Add(a)).ToArray();
-				sprites.Add(kv.Key, s);
 			}

-			sheetBuilder.Current.ReleaseBuffer();
-
 			Update();
 		}

-		PaletteReference CreatePaletteReference(string name)
-		{
-			var pal = hardwarePalette.GetPalette(name);
-			return new PaletteReference(name, hardwarePalette.GetPaletteIndex(name), pal, hardwarePalette);
-		}
-
 		IHardwareCursor CreateCursor(ISpriteFrame f, ImmutablePalette palette, string name, CursorSequence sequence)
 		{
 			var hotspot = sequence.Hotspot - f.Offset.ToInt2() + new int2(f.Size) / 2;
@@ -105,7 +80,7 @@ namespace OpenRA.Graphics
 				}
 			}

-			return Game.Renderer.Window.CreateHardwareCursor(name, new Size(dataWidth, dataHeight), data, hotspot);
+			return Game.Renderer.Device.CreateHardwareCursor(name, new Size(dataWidth, dataHeight), data, hotspot);
 		}

 		public void SetCursor(string cursorName)
@@ -121,7 +96,6 @@ namespace OpenRA.Graphics

 		int frame;
 		int ticks;
-
 		public void Tick()
 		{
 			if (cursor == null || cursor.Length == 1)
@@ -138,46 +112,18 @@ namespace OpenRA.Graphics

 		void Update()
 		{
-			if (cursor != null && frame >= cursor.Length)
-				frame %= cursor.Length;
-
-			if (cursor == null || isLocked)
-				Game.Renderer.Window.SetHardwareCursor(null);
+			if (cursor == null)
+				Game.Renderer.Device.SetHardwareCursor(null);
 			else
-				Game.Renderer.Window.SetHardwareCursor(hardwareCursors[cursor.Name][frame]);
+			{
+				if (frame >= cursor.Length)
+					frame = frame % cursor.Length;
+
+				Game.Renderer.Device.SetHardwareCursor(hardwareCursors[cursor.Name][frame]);
+			}
 		}

-		public void Render(Renderer renderer)
-		{
-			if (cursor.Name == null || !isLocked)
-				return;
-
-			var cursorSequence = cursorProvider.GetCursorSequence(cursor.Name);
-			var cursorSprite = sprites[cursor.Name][frame];
-
-			var cursorOffset = cursorSequence.Hotspot + (0.5f * cursorSprite.Size.XY).ToInt2();
-
-			renderer.SetPalette(hardwarePalette);
-			renderer.SpriteRenderer.DrawSprite(cursorSprite,
-				lockedPosition - cursorOffset,
-				paletteReferences[cursorSequence.Palette],
-				cursorSprite.Size);
-		}
-
-		public void Lock()
-		{
-			lockedPosition = Viewport.LastMousePos;
-			Game.Renderer.Window.SetRelativeMouseMode(true);
-			isLocked = true;
-			Update();
-		}
-
-		public void Unlock()
-		{
-			Game.Renderer.Window.SetRelativeMouseMode(false);
-			isLocked = false;
-			Update();
-		}
+		public void Render(Renderer renderer) { }

 		public void Dispose()
 		{
@@ -185,8 +131,7 @@ namespace OpenRA.Graphics
 				foreach (var cursor in cursors.Value)
 					cursor.Dispose();

-			sheetBuilder.Dispose();
 			hardwareCursors.Clear();
 		}
 	}
-}
+}
--- a/OpenRA.Game/Graphics/HardwarePalette.cs
+++ b/OpenRA.Game/Graphics/HardwarePalette.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -27,7 +27,7 @@ namespace OpenRA.Graphics

 		public HardwarePalette()
 		{
-			Texture = Game.Renderer.Context.CreateTexture();
+			Texture = Game.Renderer.Device.CreateTexture();
 			readOnlyModifiablePalettes = modifiablePalettes.AsReadOnly();
 		}

--- a/OpenRA.Game/Graphics/MappedImage.cs
+++ b/OpenRA.Game/Graphics/MappedImage.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,7 +10,7 @@
 #endregion

 using System.Collections.Generic;
-using OpenRA.Primitives;
+using System.Drawing;

 namespace OpenRA.Graphics
 {
@@ -29,7 +29,7 @@ namespace OpenRA.Graphics

 		public Sprite GetImage(Sheet s)
 		{
-			return new Sprite(s, rect, TextureChannel.RGBA);
+			return new Sprite(s, rect, TextureChannel.Alpha);
 		}

 		public MiniYaml Save(string defaultSrc)
--- a/OpenRA.Game/Graphics/Model.cs
+++ b/OpenRA.Game/Graphics/Model.cs
@@ -1,87 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System;
-using OpenRA.FileSystem;
-using OpenRA.Primitives;
-
-namespace OpenRA.Graphics
-{
-	public interface IModel
-	{
-		uint Frames { get; }
-		uint Sections { get; }
-
-		float[] TransformationMatrix(uint section, uint frame);
-		float[] Size { get; }
-		float[] Bounds(uint frame);
-		ModelRenderData RenderData(uint section);
-
-		/// <summary>Returns the smallest rectangle that covers all rotations of all frames in a model</summary>
-		Rectangle AggregateBounds { get; }
-	}
-
-	public struct ModelRenderData
-	{
-		public readonly int Start;
-		public readonly int Count;
-		public readonly Sheet Sheet;
-
-		public ModelRenderData(int start, int count, Sheet sheet)
-		{
-			Start = start;
-			Count = count;
-			Sheet = sheet;
-		}
-	}
-
-	public interface IModelCache : IDisposable
-	{
-		IModel GetModelSequence(string model, string sequence);
-		bool HasModelSequence(string model, string sequence);
-		IVertexBuffer<Vertex> VertexBuffer { get; }
-	}
-
-	public interface IModelSequenceLoader
-	{
-		Action<string> OnMissingModelError { get; set; }
-		IModelCache CacheModels(IReadOnlyFileSystem fileSystem, ModData modData, IReadOnlyDictionary<string, MiniYamlNode> modelDefinitions);
-	}
-
-	public class PlaceholderModelSequenceLoader : IModelSequenceLoader
-	{
-		public Action<string> OnMissingModelError { get; set; }
-
-		class PlaceholderModelCache : IModelCache
-		{
-			public IVertexBuffer<Vertex> VertexBuffer { get { throw new NotImplementedException(); } }
-
-			public void Dispose() { }
-
-			public IModel GetModelSequence(string model, string sequence)
-			{
-				throw new NotImplementedException();
-			}
-
-			public bool HasModelSequence(string model, string sequence)
-			{
-				throw new NotImplementedException();
-			}
-		}
-
-		public PlaceholderModelSequenceLoader(ModData modData) { }
-
-		public IModelCache CacheModels(IReadOnlyFileSystem fileSystem, ModData modData, IReadOnlyDictionary<string, MiniYamlNode> modelDefinitions)
-		{
-			return new PlaceholderModelCache();
-		}
-	}
-}
--- a/OpenRA.Game/Graphics/ModelAnimation.cs
+++ b/OpenRA.Game/Graphics/ModelAnimation.cs
@@ -1,58 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System;
-using System.Collections.Generic;
-using OpenRA.Primitives;
-
-namespace OpenRA.Graphics
-{
-	public struct ModelAnimation
-	{
-		public readonly IModel Model;
-		public readonly Func<WVec> OffsetFunc;
-		public readonly Func<IEnumerable<WRot>> RotationFunc;
-		public readonly Func<bool> DisableFunc;
-		public readonly Func<uint> FrameFunc;
-		public readonly bool ShowShadow;
-
-		public ModelAnimation(IModel model, Func<WVec> offset, Func<IEnumerable<WRot>> rotation, Func<bool> disable, Func<uint> frame, bool showshadow)
-		{
-			Model = model;
-			OffsetFunc = offset;
-			RotationFunc = rotation;
-			DisableFunc = disable;
-			FrameFunc = frame;
-			ShowShadow = showshadow;
-		}
-
-		public Rectangle ScreenBounds(WPos pos, WorldRenderer wr, float scale)
-		{
-			var r = Model.AggregateBounds;
-			var offset = OffsetFunc != null ? OffsetFunc() : WVec.Zero;
-			var xy = wr.ScreenPxPosition(pos) + wr.ScreenPxOffset(offset);
-
-			return Rectangle.FromLTRB(
-				xy.X + (int)(r.Left * scale),
-				xy.Y + (int)(r.Top * scale),
-				xy.X + (int)(r.Right * scale),
-				xy.Y + (int)(r.Bottom * scale));
-		}
-
-		public bool IsVisible
-		{
-			get
-			{
-				return DisableFunc == null || !DisableFunc();
-			}
-		}
-	}
-}
--- a/OpenRA.Game/Graphics/Palette.cs
+++ b/OpenRA.Game/Graphics/Palette.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,11 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.IO;
-using OpenRA.Primitives;
+using System.Reflection;
+using System.Runtime.InteropServices;

 namespace OpenRA.Graphics
 {
@@ -33,6 +36,35 @@ namespace OpenRA.Graphics
 			return Color.FromArgb((int)palette[index]);
 		}

+		public static ColorPalette AsSystemPalette(this IPalette palette)
+		{
+			ColorPalette pal;
+			using (var b = new Bitmap(1, 1, PixelFormat.Format8bppIndexed))
+				pal = b.Palette;
+
+			for (var i = 0; i < Size; i++)
+				pal.Entries[i] = palette.GetColor(i);
+
+			// hack around a mono bug -- the palette flags get set wrong.
+			if (Platform.CurrentPlatform != PlatformType.Windows)
+				typeof(ColorPalette).GetField("flags",
+					BindingFlags.Instance | BindingFlags.NonPublic).SetValue(pal, 1);
+
+			return pal;
+		}
+
+		public static Bitmap AsBitmap(this IPalette palette)
+		{
+			var b = new Bitmap(Size, 1, PixelFormat.Format32bppArgb);
+			var data = b.LockBits(new Rectangle(0, 0, b.Width, b.Height),
+								  ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
+			var temp = new uint[Size];
+			palette.CopyToArray(temp, 0);
+			Marshal.Copy((int[])(object)temp, 0, data.Scan0, Size);
+			b.UnlockBits(data);
+			return b;
+		}
+
 		public static IPalette AsReadOnly(this IPalette palette)
 		{
 			if (palette is ImmutablePalette)
@@ -85,12 +117,6 @@ namespace OpenRA.Graphics
 					var r = (byte)(reader.ReadByte() << 2);
 					var g = (byte)(reader.ReadByte() << 2);
 					var b = (byte)(reader.ReadByte() << 2);
-
-					// Replicate high bits into the (currently zero) low bits.
-					r |= (byte)(r >> 6);
-					g |= (byte)(g >> 6);
-					b |= (byte)(b >> 6);
-
 					colors[i] = (uint)((255 << 24) | (r << 16) | (g << 8) | b);
 				}

--- a/OpenRA.Game/Graphics/PaletteReference.cs
+++ b/OpenRA.Game/Graphics/PaletteReference.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/Graphics/PlatformInterfaces.cs
+++ b/OpenRA.Game/Graphics/PlatformInterfaces.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,16 +10,15 @@
 #endregion

 using System;
+using System.Drawing;
 using OpenRA.Graphics;
-using OpenRA.Primitives;

 namespace OpenRA
 {
 	public interface IPlatform
 	{
-		IPlatformWindow CreateWindow(Size size, WindowMode windowMode, int batchSize);
+		IGraphicsDevice CreateGraphics(Size size, WindowMode windowMode);
 		ISoundEngine CreateSound(string device);
-		IFont CreateFont(byte[] data);
 	}

 	public interface IHardwareCursor : IDisposable { }
@@ -35,42 +34,39 @@ namespace OpenRA
 		DoubleMultiplicative
 	}

-	public interface IPlatformWindow : IDisposable
+	public interface IGraphicsDevice : IDisposable
 	{
-		IGraphicsContext Context { get; }
+		IVertexBuffer<Vertex> CreateVertexBuffer(int length);
+		ITexture CreateTexture(Bitmap bitmap);
+		ITexture CreateTexture();
+		IFrameBuffer CreateFrameBuffer(Size s);
+		IShader CreateShader(string name);

 		Size WindowSize { get; }
-		float WindowScale { get; }
-		event Action<float, float> OnWindowScaleChanged;

+		void Clear();
+		void Present();
+		Bitmap TakeScreenshot();
 		void PumpInput(IInputHandler inputHandler);
 		string GetClipboardText();
 		bool SetClipboardText(string text);
+		void DrawPrimitives(PrimitiveType type, int firstVertex, int numVertices);
+
+		void EnableScissor(int left, int top, int width, int height);
+		void DisableScissor();
+
+		void EnableDepthBuffer();
+		void DisableDepthBuffer();
+		void ClearDepthBuffer();
+
+		void SetBlendMode(BlendMode mode);

 		void GrabWindowMouseFocus();
 		void ReleaseWindowMouseFocus();

 		IHardwareCursor CreateHardwareCursor(string name, Size size, byte[] data, int2 hotspot);
 		void SetHardwareCursor(IHardwareCursor cursor);
-		void SetRelativeMouseMode(bool mode);
-	}

-	public interface IGraphicsContext : IDisposable
-	{
-		IVertexBuffer<Vertex> CreateVertexBuffer(int size);
-		ITexture CreateTexture();
-		IFrameBuffer CreateFrameBuffer(Size s);
-		IShader CreateShader(string name);
-		void EnableScissor(int left, int top, int width, int height);
-		void DisableScissor();
-		void SaveScreenshot(string path);
-		void Present();
-		void DrawPrimitives(PrimitiveType pt, int firstVertex, int numVertices);
-		void Clear();
-		void EnableDepthBuffer();
-		void DisableDepthBuffer();
-		void ClearDepthBuffer();
-		void SetBlendMode(BlendMode mode);
 		string GLVersion { get; }
 	}

@@ -91,13 +87,14 @@ namespace OpenRA
 		void SetVec(string name, float[] vec, int length);
 		void SetTexture(string param, ITexture texture);
 		void SetMatrix(string param, float[] mtx);
-		void PrepareRender();
+		void Render(Action a);
 	}

 	public enum TextureScaleFilter { Nearest, Linear }

 	public interface ITexture : IDisposable
 	{
+		void SetData(Bitmap bitmap);
 		void SetData(uint[,] colors);
 		void SetData(byte[] colors, int width, int height);
 		byte[] GetData();
@@ -131,17 +128,4 @@ namespace OpenRA
 		Fullscreen,
 		PseudoFullscreen,
 	}
-
-	public interface IFont : IDisposable
-	{
-		FontGlyph CreateGlyph(char c, int size, float deviceScale);
-	}
-
-	public struct FontGlyph
-	{
-		public int2 Offset;
-		public Size Size;
-		public float Advance;
-		public byte[] Data;
-	}
 }
--- a/OpenRA.Game/Graphics/PlayerColorRemap.cs
+++ b/OpenRA.Game/Graphics/PlayerColorRemap.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,6 +11,7 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
 using OpenRA.Primitives;

@@ -25,16 +26,12 @@ namespace OpenRA.Graphics
 			return ramp[i];
 		}

-		public PlayerColorRemap(int[] ramp, Color c, float rampFraction)
+		public PlayerColorRemap(int[] ramp, HSLColor c, float rampFraction)
 		{
-			var h = c.GetHue() / 360.0f;
-			var s = c.GetSaturation();
-			var l = c.GetBrightness();
-
 			// Increase luminosity if required to represent the full ramp
-			var rampRange = (byte)((1 - rampFraction) * l);
-			var c1 = Color.FromAhsl(h, s, Math.Max(rampRange, l));
-			var c2 = Color.FromAhsl(h, s, (byte)Math.Max(0, l - rampRange));
+			var rampRange = (byte)((1 - rampFraction) * c.L);
+			var c1 = new HSLColor(c.H, c.S, Math.Max(rampRange, c.L)).RGB;
+			var c2 = new HSLColor(c.H, c.S, (byte)Math.Max(0, c.L - rampRange)).RGB;
 			var baseIndex = ramp[0];
 			var remapRamp = ramp.Select(r => r - ramp[0]);
 			var rampMaxIndex = ramp.Length - 1;
--- a/OpenRA.Game/Graphics/Renderable.cs
+++ b/OpenRA.Game/Graphics/Renderable.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,7 +9,7 @@
 */
 #endregion

-using OpenRA.Primitives;
+using System.Drawing;

 namespace OpenRA.Graphics
 {
--- a/OpenRA.Game/Graphics/RgbaColorRenderer.cs
+++ b/OpenRA.Game/Graphics/RgbaColorRenderer.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,25 +11,49 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
-using OpenRA.Primitives;

 namespace OpenRA.Graphics
 {
-	public class RgbaColorRenderer
+	public class RgbaColorRenderer : Renderer.IBatchRenderer
 	{
-		static readonly float3 Offset = new float3(0.5f, 0.5f, 0f);
+		static readonly float2 Offset = new float2(0.5f, 0.5f);

-		readonly SpriteRenderer parent;
-		readonly Vertex[] vertices = new Vertex[6];
+		readonly Renderer renderer;
+		readonly IShader shader;
+		readonly Action renderAction;

-		public RgbaColorRenderer(SpriteRenderer parent)
+		readonly Vertex[] vertices;
+		int nv = 0;
+
+		public RgbaColorRenderer(Renderer renderer, IShader shader)
 		{
-			this.parent = parent;
+			this.renderer = renderer;
+			this.shader = shader;
+			vertices = new Vertex[renderer.TempBufferSize];
+			renderAction = () => renderer.DrawBatch(vertices, nv, PrimitiveType.TriangleList);
+		}
+
+		public void Flush()
+		{
+			if (nv > 0)
+			{
+				renderer.Device.SetBlendMode(BlendMode.Alpha);
+				shader.Render(renderAction);
+				renderer.Device.SetBlendMode(BlendMode.None);
+
+				nv = 0;
+			}
 		}

 		public void DrawLine(float3 start, float3 end, float width, Color startColor, Color endColor)
 		{
+			renderer.CurrentBatchRenderer = this;
+
+			if (nv + 6 > renderer.TempBufferSize)
+				Flush();
+
 			var delta = (end - start) / (end - start).XY.Length;
 			var corner = width / 2 * new float3(-delta.Y, delta.X, delta.Z);

@@ -45,18 +69,21 @@ namespace OpenRA.Graphics
 			var eb = endColor.B / 255.0f;
 			var ea = endColor.A / 255.0f;

-			vertices[0] = new Vertex(start - corner + Offset, sr, sg, sb, sa, 0, 0);
-			vertices[1] = new Vertex(start + corner + Offset, sr, sg, sb, sa, 0, 0);
-			vertices[2] = new Vertex(end + corner + Offset, er, eg, eb, ea, 0, 0);
-			vertices[3] = new Vertex(end + corner + Offset, er, eg, eb, ea, 0, 0);
-			vertices[4] = new Vertex(end - corner + Offset, er, eg, eb, ea, 0, 0);
-			vertices[5] = new Vertex(start - corner + Offset, sr, sg, sb, sa, 0, 0);
-
-			parent.DrawRGBAVertices(vertices);
+			vertices[nv++] = new Vertex(start - corner + Offset, sr, sg, sb, sa, 0, 0);
+			vertices[nv++] = new Vertex(start + corner + Offset, sr, sg, sb, sa, 0, 0);
+			vertices[nv++] = new Vertex(end + corner + Offset, er, eg, eb, ea, 0, 0);
+			vertices[nv++] = new Vertex(end + corner + Offset, er, eg, eb, ea, 0, 0);
+			vertices[nv++] = new Vertex(end - corner + Offset, er, eg, eb, ea, 0, 0);
+			vertices[nv++] = new Vertex(start - corner + Offset, sr, sg, sb, sa, 0, 0);
 		}

 		public void DrawLine(float3 start, float3 end, float width, Color color)
 		{
+			renderer.CurrentBatchRenderer = this;
+
+			if (nv + 6 > renderer.TempBufferSize)
+				Flush();
+
 			var delta = (end - start) / (end - start).XY.Length;
 			var corner = width / 2 * new float2(-delta.Y, delta.X);

@@ -66,13 +93,12 @@ namespace OpenRA.Graphics
 			var b = color.B / 255.0f;
 			var a = color.A / 255.0f;

-			vertices[0] = new Vertex(start - corner + Offset, r, g, b, a, 0, 0);
-			vertices[1] = new Vertex(start + corner + Offset, r, g, b, a, 0, 0);
-			vertices[2] = new Vertex(end + corner + Offset, r, g, b, a, 0, 0);
-			vertices[3] = new Vertex(end + corner + Offset, r, g, b, a, 0, 0);
-			vertices[4] = new Vertex(end - corner + Offset, r, g, b, a, 0, 0);
-			vertices[5] = new Vertex(start - corner + Offset, r, g, b, a, 0, 0);
-			parent.DrawRGBAVertices(vertices);
+			vertices[nv++] = new Vertex(start - corner + Offset, r, g, b, a, 0, 0);
+			vertices[nv++] = new Vertex(start + corner + Offset, r, g, b, a, 0, 0);
+			vertices[nv++] = new Vertex(end + corner + Offset, r, g, b, a, 0, 0);
+			vertices[nv++] = new Vertex(end + corner + Offset, r, g, b, a, 0, 0);
+			vertices[nv++] = new Vertex(end - corner + Offset, r, g, b, a, 0, 0);
+			vertices[nv++] = new Vertex(start - corner + Offset, r, g, b, a, 0, 0);
 		}

 		/// <summary>
@@ -120,6 +146,7 @@ namespace OpenRA.Graphics
 				return;
 			}

+			renderer.CurrentBatchRenderer = this;
 			color = Util.PremultiplyAlpha(color);
 			var r = color.R / 255.0f;
 			var g = color.G / 255.0f;
@@ -157,13 +184,15 @@ namespace OpenRA.Graphics
 				var cd = closed || i < limit ? IntersectionOf(end - corner, dir, end - nextCorner, nextDir) : end - corner;

 				// Fill segment
-				vertices[0] = new Vertex(ca + Offset, r, g, b, a, 0, 0);
-				vertices[1] = new Vertex(cb + Offset, r, g, b, a, 0, 0);
-				vertices[2] = new Vertex(cc + Offset, r, g, b, a, 0, 0);
-				vertices[3] = new Vertex(cc + Offset, r, g, b, a, 0, 0);
-				vertices[4] = new Vertex(cd + Offset, r, g, b, a, 0, 0);
-				vertices[5] = new Vertex(ca + Offset, r, g, b, a, 0, 0);
-				parent.DrawRGBAVertices(vertices);
+				if (nv + 6 > renderer.TempBufferSize)
+					Flush();
+
+				vertices[nv++] = new Vertex(ca + Offset, r, g, b, a, 0, 0);
+				vertices[nv++] = new Vertex(cb + Offset, r, g, b, a, 0, 0);
+				vertices[nv++] = new Vertex(cc + Offset, r, g, b, a, 0, 0);
+				vertices[nv++] = new Vertex(cc + Offset, r, g, b, a, 0, 0);
+				vertices[nv++] = new Vertex(cd + Offset, r, g, b, a, 0, 0);
+				vertices[nv++] = new Vertex(ca + Offset, r, g, b, a, 0, 0);

 				// Advance line segment
 				end = next;
@@ -175,6 +204,11 @@ namespace OpenRA.Graphics
 			}
 		}

+		public void DrawLine(IEnumerable<float2> points, float width, Color color, bool connectSegments = false)
+		{
+			DrawLine(points.Select(p => new float3(p, 0)), width, color, connectSegments);
+		}
+
 		public void DrawLine(IEnumerable<float3> points, float width, Color color, bool connectSegments = false)
 		{
 			if (!connectSegments)
@@ -200,20 +234,6 @@ namespace OpenRA.Graphics
 			DrawPolygon(new[] { tl, tr, br, bl }, width, color);
 		}

-		public void FillTriangle(float3 a, float3 b, float3 c, Color color)
-		{
-			color = Util.PremultiplyAlpha(color);
-			var cr = color.R / 255.0f;
-			var cg = color.G / 255.0f;
-			var cb = color.B / 255.0f;
-			var ca = color.A / 255.0f;
-
-			vertices[0] = new Vertex(a + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[1] = new Vertex(b + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[2] = new Vertex(c + Offset, cr, cg, cb, ca, 0, 0);
-			parent.DrawRGBAVertices(vertices);
-		}
-
 		public void FillRect(float3 tl, float3 br, Color color)
 		{
 			var tr = new float3(br.X, tl.Y, tl.Z);
@@ -223,42 +243,23 @@ namespace OpenRA.Graphics

 		public void FillRect(float3 a, float3 b, float3 c, float3 d, Color color)
 		{
+			renderer.CurrentBatchRenderer = this;
+
+			if (nv + 6 > renderer.TempBufferSize)
+				Flush();
+
 			color = Util.PremultiplyAlpha(color);
 			var cr = color.R / 255.0f;
 			var cg = color.G / 255.0f;
 			var cb = color.B / 255.0f;
 			var ca = color.A / 255.0f;

-			vertices[0] = new Vertex(a + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[1] = new Vertex(b + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[2] = new Vertex(c + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[3] = new Vertex(c + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[4] = new Vertex(d + Offset, cr, cg, cb, ca, 0, 0);
-			vertices[5] = new Vertex(a + Offset, cr, cg, cb, ca, 0, 0);
-			parent.DrawRGBAVertices(vertices);
-		}
-
-		public void FillRect(float3 a, float3 b, float3 c, float3 d, Color topLeftColor, Color topRightColor, Color bottomRightColor, Color bottomLeftColor)
-		{
-			vertices[0] = VertexWithColor(a + Offset, topLeftColor);
-			vertices[1] = VertexWithColor(b + Offset, topRightColor);
-			vertices[2] = VertexWithColor(c + Offset, bottomRightColor);
-			vertices[3] = VertexWithColor(c + Offset, bottomRightColor);
-			vertices[4] = VertexWithColor(d + Offset, bottomLeftColor);
-			vertices[5] = VertexWithColor(a + Offset, topLeftColor);
-
-			parent.DrawRGBAVertices(vertices);
-		}
-
-		static Vertex VertexWithColor(float3 xyz, Color color)
-		{
-			color = Util.PremultiplyAlpha(color);
-			var cr = color.R / 255.0f;
-			var cg = color.G / 255.0f;
-			var cb = color.B / 255.0f;
-			var ca = color.A / 255.0f;
-
-			return new Vertex(xyz, cr, cg, cb, ca, 0, 0);
+			vertices[nv++] = new Vertex(a + Offset, cr, cg, cb, ca, 0, 0);
+			vertices[nv++] = new Vertex(b + Offset, cr, cg, cb, ca, 0, 0);
+			vertices[nv++] = new Vertex(c + Offset, cr, cg, cb, ca, 0, 0);
+			vertices[nv++] = new Vertex(c + Offset, cr, cg, cb, ca, 0, 0);
+			vertices[nv++] = new Vertex(d + Offset, cr, cg, cb, ca, 0, 0);
+			vertices[nv++] = new Vertex(a + Offset, cr, cg, cb, ca, 0, 0);
 		}

 		public void FillEllipse(float3 tl, float3 br, Color color, int vertices = 32)
@@ -275,5 +276,20 @@ namespace OpenRA.Graphics
 				DrawLine(new float3(xc - dx, y, z), new float3(xc + dx, y, z), 1, color);
 			}
 		}
+
+		public void SetViewportParams(Size screen, float depthScale, float depthOffset, float zoom, int2 scroll)
+		{
+			shader.SetVec("Scroll", scroll.X, scroll.Y, scroll.Y);
+			shader.SetVec("r1",
+				zoom * 2f / screen.Width,
+				-zoom * 2f / screen.Height,
+				-depthScale * zoom / screen.Height);
+			shader.SetVec("r2", -1, 1, 1 - depthOffset);
+		}
+
+		public void SetDepthPreviewEnabled(bool enabled)
+		{
+			shader.SetBool("EnableDepthPreview", enabled);
+		}
 	}
 }
--- a/OpenRA.Game/Graphics/RgbaSpriteRenderer.cs
+++ b/OpenRA.Game/Graphics/RgbaSpriteRenderer.cs
@@ -1,49 +0,0 @@
-#region Copyright & License Information
-/*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
- * This file is part of OpenRA, which is free software. It is made
- * available to you under the terms of the GNU General Public License
- * as published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version. For more
- * information, see COPYING.
- */
-#endregion
-
-using System;
-
-namespace OpenRA.Graphics
-{
-	public class RgbaSpriteRenderer
-	{
-		readonly SpriteRenderer parent;
-
-		public RgbaSpriteRenderer(SpriteRenderer parent)
-		{
-			this.parent = parent;
-		}
-
-		public void DrawSprite(Sprite s, float3 location, float3 size)
-		{
-			if (s.Channel != TextureChannel.RGBA)
-				throw new InvalidOperationException("DrawRGBASprite requires a RGBA sprite.");
-
-			parent.DrawSprite(s, location, 0, size);
-		}
-
-		public void DrawSprite(Sprite s, float3 location)
-		{
-			if (s.Channel != TextureChannel.RGBA)
-				throw new InvalidOperationException("DrawRGBASprite requires a RGBA sprite.");
-
-			parent.DrawSprite(s, location, 0, s.Size);
-		}
-
-		public void DrawSprite(Sprite s, float3 a, float3 b, float3 c, float3 d)
-		{
-			if (s.Channel != TextureChannel.RGBA)
-				throw new InvalidOperationException("DrawRGBASprite requires a RGBA sprite.");
-
-			parent.DrawSprite(s, a, b, c, d);
-		}
-	}
-}
--- a/OpenRA.Mods.Common/Graphics/SelectionBarsRenderable.cs
+++ b/OpenRA.Mods.Common/Graphics/SelectionBarsRenderable.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,11 +9,10 @@
 */
 #endregion

-using OpenRA.Graphics;
-using OpenRA.Primitives;
+using System.Drawing;
 using OpenRA.Traits;

-namespace OpenRA.Mods.Common.Graphics
+namespace OpenRA.Graphics
 {
 	public struct SelectionBarsRenderable : IRenderable, IFinalizedRenderable
 	{
@@ -21,21 +20,19 @@ namespace OpenRA.Mods.Common.Graphics
 		readonly Actor actor;
 		readonly bool displayHealth;
 		readonly bool displayExtra;
-		readonly Rectangle decorationBounds;

-		public SelectionBarsRenderable(Actor actor, Rectangle decorationBounds, bool displayHealth, bool displayExtra)
-			: this(actor.CenterPosition, actor, decorationBounds)
+		public SelectionBarsRenderable(Actor actor, bool displayHealth, bool displayExtra)
+			: this(actor.CenterPosition, actor)
 		{
 			this.displayHealth = displayHealth;
 			this.displayExtra = displayExtra;
 		}

-		public SelectionBarsRenderable(WPos pos, Actor actor, Rectangle decorationBounds)
+		public SelectionBarsRenderable(WPos pos, Actor actor)
 			: this()
 		{
 			this.pos = pos;
 			this.actor = actor;
-			this.decorationBounds = decorationBounds;
 		}

 		public WPos Pos { get { return pos; } }
@@ -48,7 +45,7 @@ namespace OpenRA.Mods.Common.Graphics

 		public IRenderable WithPalette(PaletteReference newPalette) { return this; }
 		public IRenderable WithZOffset(int newOffset) { return this; }
-		public IRenderable OffsetBy(WVec vec) { return new SelectionBarsRenderable(pos + vec, actor, decorationBounds); }
+		public IRenderable OffsetBy(WVec vec) { return new SelectionBarsRenderable(pos + vec, actor); }
 		public IRenderable AsDecoration() { return this; }

 		void DrawExtraBars(WorldRenderer wr, float3 start, float3 end)
@@ -152,8 +149,11 @@ namespace OpenRA.Mods.Common.Graphics
 			var health = actor.TraitOrDefault<IHealth>();

 			var screenPos = wr.Screen3DPxPosition(pos);
-			var start = new float3(decorationBounds.Left + 1, decorationBounds.Top, screenPos.Z);
-			var end = new float3(decorationBounds.Right - 1, decorationBounds.Top, screenPos.Z);
+			var bounds = actor.VisualBounds;
+			bounds.Offset((int)screenPos.X, (int)screenPos.Y);
+
+			var start = new float3(bounds.Left + 1, bounds.Top, screenPos.Z);
+			var end = new float3(bounds.Right - 1, bounds.Top, screenPos.Z);

 			if (DisplayHealth)
 				DrawHealthBar(wr, health, start, end);
--- a/OpenRA.Game/Graphics/SequenceProvider.cs
+++ b/OpenRA.Game/Graphics/SequenceProvider.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,8 @@

 using System;
 using System.Collections.Generic;
+using System.Linq;
 using OpenRA.FileSystem;
-using OpenRA.Primitives;

 namespace OpenRA.Graphics
 {
@@ -31,7 +31,6 @@ namespace OpenRA.Graphics
 		int ShadowStart { get; }
 		int ShadowZOffset { get; }
 		int[] Frames { get; }
-		Rectangle Bounds { get; }

 		Sprite GetSprite(int frame);
 		Sprite GetSprite(int frame, int facing);
--- a/OpenRA.Game/Graphics/Sheet.cs
+++ b/OpenRA.Game/Graphics/Sheet.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,9 +10,10 @@
 #endregion

 using System;
+using System.Drawing;
+using System.Drawing.Imaging;
 using System.IO;
-using OpenRA.FileFormats;
-using OpenRA.Primitives;
+using System.Runtime.InteropServices;

 namespace OpenRA.Graphics
 {
@@ -49,10 +50,13 @@ namespace OpenRA.Graphics

 		public Sheet(SheetType type, Stream stream)
 		{
-			var png = new Png(stream);
-			Size = new Size(png.Width, png.Height);
-			data = new byte[4 * Size.Width * Size.Height];
-			Util.FastCopyIntoSprite(new Sprite(this, new Rectangle(0, 0, png.Width, png.Height), TextureChannel.Red), png);
+			using (var bitmap = (Bitmap)Image.FromStream(stream))
+			{
+				Size = bitmap.Size;
+				data = new byte[4 * Size.Width * Size.Height];
+
+				Util.FastCopyIntoSprite(new Sprite(this, bitmap.Bounds(), TextureChannel.Red), bitmap);
+			}

 			Type = type;
 			ReleaseBuffer();
@@ -62,7 +66,7 @@ namespace OpenRA.Graphics
 		{
 			if (texture == null)
 			{
-				texture = Game.Renderer.Context.CreateTexture();
+				texture = Game.Renderer.Device.CreateTexture();
 				dirty = true;
 			}

@@ -77,27 +81,48 @@ namespace OpenRA.Graphics
 			return texture;
 		}

-		public Png AsPng()
-		{
-			return new Png(GetData(), Size.Width, Size.Height);
-		}
-
-		public Png AsPng(TextureChannel channel, IPalette pal)
+		public Bitmap AsBitmap()
 		{
 			var d = GetData();
-			var plane = new byte[Size.Width * Size.Height];
 			var dataStride = 4 * Size.Width;
+			var bitmap = new Bitmap(Size.Width, Size.Height);
+
+			var bd = bitmap.LockBits(bitmap.Bounds(),
+				ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
+			for (var y = 0; y < Size.Height; y++)
+				Marshal.Copy(d, y * dataStride, IntPtr.Add(bd.Scan0, y * bd.Stride), dataStride);
+			bitmap.UnlockBits(bd);
+
+			return bitmap;
+		}
+
+		public Bitmap AsBitmap(TextureChannel channel, IPalette pal)
+		{
+			var d = GetData();
+			var dataStride = 4 * Size.Width;
+			var bitmap = new Bitmap(Size.Width, Size.Height);
 			var channelOffset = (int)channel;

-			for (var y = 0; y < Size.Height; y++)
-				for (var x = 0; x < Size.Width; x++)
-					plane[y * Size.Width + x] = d[y * dataStride + channelOffset + 4 * x];
+			var bd = bitmap.LockBits(bitmap.Bounds(),
+				ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
+			unsafe
+			{
+				var colors = (uint*)bd.Scan0;
+				for (var y = 0; y < Size.Height; y++)
+				{
+					var dataRowIndex = y * dataStride + channelOffset;
+					var bdRowIndex = y * bd.Stride / 4;
+					for (var x = 0; x < Size.Width; x++)
+					{
+						var paletteIndex = d[dataRowIndex + 4 * x];
+						colors[bdRowIndex + x] = pal[paletteIndex];
+					}
+				}
+			}

-			var palColors = new Color[Palette.Size];
-			for (var i = 0; i < Palette.Size; i++)
-				palColors[i] = pal.GetColor(i);
+			bitmap.UnlockBits(bd);

-			return new Png(plane, Size.Width, Size.Height, palColors);
+			return bitmap;
 		}

 		public void CreateBuffer()
@@ -128,10 +153,6 @@ namespace OpenRA.Graphics
 				return;
 			dirty = true;
 			releaseBufferOnCommit = true;
-
-			// Commit data from the buffer to the texture, allowing the buffer to be released and reclaimed by GC.
-			if (Game.Renderer != null)
-				GetTexture();
 		}

 		public void Dispose()
--- a/OpenRA.Game/Graphics/SheetBuilder.cs
+++ b/OpenRA.Game/Graphics/SheetBuilder.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,7 @@

 using System;
 using System.Collections.Generic;
-using OpenRA.FileFormats;
-using OpenRA.Primitives;
+using System.Drawing;

 namespace OpenRA.Graphics
 {
@@ -23,12 +22,10 @@ namespace OpenRA.Graphics
 			: base(message) { }
 	}

-	// The enum values indicate the number of channels used by the type
-	// They are not arbitrary IDs!
 	public enum SheetType
 	{
 		Indexed = 1,
-		BGRA = 4,
+		BGRA = 2,
 	}

 	public sealed class SheetBuilder : IDisposable
@@ -40,7 +37,7 @@ namespace OpenRA.Graphics
 		Sheet current;
 		TextureChannel channel;
 		int rowHeight = 0;
-		int2 p;
+		Point p;

 		public static Sheet AllocateSheet(SheetType type, int sheetSize)
 		{
@@ -55,7 +52,7 @@ namespace OpenRA.Graphics

 		public SheetBuilder(SheetType t, Func<Sheet> allocateSheet)
 		{
-			channel = t == SheetType.Indexed ? TextureChannel.Red : TextureChannel.RGBA;
+			channel = TextureChannel.Red;
 			Type = t;
 			current = allocateSheet();
 			sheets.Add(current);
@@ -76,9 +73,9 @@ namespace OpenRA.Graphics
 			return rect;
 		}

-		public Sprite Add(Png src)
+		public Sprite Add(Bitmap src)
 		{
-			var rect = Allocate(new Size(src.Width, src.Height));
+			var rect = Allocate(src.Size);
 			Util.FastCopyIntoSprite(rect, src);
 			current.CommitBufferedData();
 			return rect;
@@ -107,7 +104,7 @@ namespace OpenRA.Graphics
 		{
 			if (imageSize.Width + p.X > current.Size.Width)
 			{
-				p = new int2(0, p.Y + rowHeight);
+				p = new Point(0, p.Y + rowHeight);
 				rowHeight = imageSize.Height;
 			}

@@ -122,24 +119,22 @@ namespace OpenRA.Graphics
 					current.ReleaseBuffer();
 					current = allocateSheet();
 					sheets.Add(current);
-					channel = Type == SheetType.Indexed ? TextureChannel.Red : TextureChannel.RGBA;
+					channel = TextureChannel.Red;
 				}
 				else
 					channel = next.Value;

 				rowHeight = imageSize.Height;
-				p = int2.Zero;
+				p = new Point(0, 0);
 			}

-			var rect = new Sprite(current, new Rectangle(p.X, p.Y, imageSize.Width, imageSize.Height), zRamp, spriteOffset, channel, BlendMode.Alpha);
-			p += new int2(imageSize.Width, 0);
+			var rect = new Sprite(current, new Rectangle(p, imageSize), zRamp, spriteOffset, channel, BlendMode.Alpha);
+			p.X += imageSize.Width;

 			return rect;
 		}

 		public Sheet Current { get { return current; } }
-		public TextureChannel CurrentChannel { get { return channel; } }
-		public IEnumerable<Sheet> AllSheets { get { return sheets; } }

 		public void Dispose()
 		{
--- a/OpenRA.Game/Graphics/SoftwareCursor.cs
+++ b/OpenRA.Game/Graphics/SoftwareCursor.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -21,8 +21,6 @@ namespace OpenRA.Graphics
 		void Render(Renderer renderer);
 		void SetCursor(string cursor);
 		void Tick();
-		void Lock();
-		void Unlock();
 	}

 	public sealed class SoftwareCursor : ICursor
@@ -33,9 +31,6 @@ namespace OpenRA.Graphics
 		readonly CursorProvider cursorProvider;
 		readonly SheetBuilder sheetBuilder;

-		bool isLocked = false;
-		int2 lockedPosition;
-
 		public SoftwareCursor(CursorProvider cursorProvider)
 		{
 			this.cursorProvider = cursorProvider;
@@ -55,7 +50,7 @@ namespace OpenRA.Graphics

 			sheetBuilder.Current.ReleaseBuffer();

-			Game.Renderer.Window.SetHardwareCursor(null);
+			Game.Renderer.Device.SetHardwareCursor(null);
 		}

 		PaletteReference CreatePaletteReference(string name)
@@ -82,7 +77,7 @@ namespace OpenRA.Graphics
 				return;

 			var cursorSequence = cursorProvider.GetCursorSequence(cursorName);
-			var cursorSprite = sprites[cursorName][(int)cursorFrame % cursorSequence.Length];
+			var cursorSprite = sprites[cursorName][((int)cursorFrame % cursorSequence.Length)];
 			var cursorSize = CursorProvider.CursorViewportZoomed ? 2.0f * cursorSprite.Size : cursorSprite.Size;

 			var cursorOffset = CursorProvider.CursorViewportZoomed ?
@@ -90,26 +85,12 @@ namespace OpenRA.Graphics
 				cursorSequence.Hotspot + (0.5f * cursorSprite.Size.XY).ToInt2();

 			renderer.SetPalette(palette);
-			var mousePos = isLocked ? lockedPosition : Viewport.LastMousePos;
 			renderer.SpriteRenderer.DrawSprite(cursorSprite,
-				mousePos - cursorOffset,
+				Viewport.LastMousePos - cursorOffset,
 				paletteReferences[cursorSequence.Palette],
 				cursorSize);
 		}

-		public void Lock()
-		{
-			Game.Renderer.Window.SetRelativeMouseMode(true);
-			lockedPosition = Viewport.LastMousePos;
-			isLocked = true;
-		}
-
-		public void Unlock()
-		{
-			Game.Renderer.Window.SetRelativeMouseMode(false);
-			isLocked = false;
-		}
-
 		public void Dispose()
 		{
 			palette.Dispose();
--- a/OpenRA.Game/Graphics/Sprite.cs
+++ b/OpenRA.Game/Graphics/Sprite.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,7 +10,7 @@
 #endregion

 using System;
-using OpenRA.Primitives;
+using System.Drawing;

 namespace OpenRA.Graphics
 {
@@ -50,15 +50,13 @@ namespace OpenRA.Graphics

 	public class SpriteWithSecondaryData : Sprite
 	{
-		public readonly Sheet SecondarySheet;
 		public readonly Rectangle SecondaryBounds;
 		public readonly TextureChannel SecondaryChannel;
 		public readonly float SecondaryTop, SecondaryLeft, SecondaryBottom, SecondaryRight;

-		public SpriteWithSecondaryData(Sprite s, Sheet secondarySheet, Rectangle secondaryBounds, TextureChannel secondaryChannel)
+		public SpriteWithSecondaryData(Sprite s, Rectangle secondaryBounds, TextureChannel secondaryChannel)
 			: base(s.Sheet, s.Bounds, s.ZRamp, s.Offset, s.Channel, s.BlendMode)
 		{
-			SecondarySheet = secondarySheet;
 			SecondaryBounds = secondaryBounds;
 			SecondaryChannel = secondaryChannel;
 			SecondaryLeft = (float)Math.Min(secondaryBounds.Left, secondaryBounds.Right) / s.Sheet.Size.Width;
@@ -74,6 +72,5 @@ namespace OpenRA.Graphics
 		Green = 1,
 		Blue = 2,
 		Alpha = 3,
-		RGBA = 4
 	}
 }
--- a/OpenRA.Game/Graphics/SpriteFont.cs
+++ b/OpenRA.Game/Graphics/SpriteFont.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,56 +10,49 @@
 #endregion

 using System;
+using System.Drawing;
 using System.Linq;
 using OpenRA.Primitives;
 using OpenRA.Support;
 using OpenRA.Widgets;
+using SharpFont;

 namespace OpenRA.Graphics
 {
 	public sealed class SpriteFont : IDisposable
 	{
-		public int TopOffset { get; private set; }
+		static readonly Library Library = new Library();
+
 		readonly int size;
 		readonly SheetBuilder builder;
 		readonly Func<string, float> lineWidth;
-		readonly IFont font;
+		readonly Face face;
 		readonly Cache<Pair<char, Color>, GlyphInfo> glyphs;

-		float deviceScale;
-
-		public SpriteFont(string name, byte[] data, int size, int ascender, float scale, SheetBuilder builder)
+		public SpriteFont(string name, byte[] data, int size, SheetBuilder builder)
 		{
 			if (builder.Type != SheetType.BGRA)
 				throw new ArgumentException("The sheet builder must create BGRA sheets.", "builder");

-			deviceScale = scale;
 			this.size = size;
 			this.builder = builder;

-			font = Game.Renderer.CreateFont(data);
+			face = new Face(Library, data, 0);
+			face.SetPixelSizes((uint)size, (uint)size);

 			glyphs = new Cache<Pair<char, Color>, GlyphInfo>(CreateGlyph, Pair<char, Color>.EqualityComparer);

 			// PERF: Cache these delegates for Measure calls.
 			Func<char, float> characterWidth = character => glyphs[Pair.New(character, Color.White)].Advance;
-			lineWidth = line => line.Sum(characterWidth) / deviceScale;
+			lineWidth = line => line.Sum(characterWidth);

-			if (size <= 24)
-				PrecacheColor(Color.White, name);
-
-			TopOffset = size - ascender;
-		}
-
-		public void SetScale(float scale)
-		{
-			deviceScale = scale;
-			glyphs.Clear();
+			PrecacheColor(Color.White, name);
+			PrecacheColor(Color.Red, name);
 		}

 		void PrecacheColor(Color c, string name)
 		{
-			using (new PerfTimer("PrecacheColor {0} {1}px {2}".F(name, size, c)))
+			using (new PerfTimer("PrecacheColor {0} {1}px {2}".F(name, size, c.Name)))
 				for (var n = (char)0x20; n < (char)0x7f; n++)
 					if (glyphs[Pair.New(n, c)] == null)
 						throw new InvalidOperationException();
@@ -67,74 +60,24 @@ namespace OpenRA.Graphics

 		public void DrawText(string text, float2 location, Color c)
 		{
-			// Offset from the baseline position to the top-left of the glyph for rendering
-			location += new float2(0, size);
+			location.Y += size;	// baseline vs top

 			var p = location;
 			foreach (var s in text)
 			{
 				if (s == '\n')
 				{
-					location += new float2(0, size);
+					location.Y += size;
 					p = location;
 					continue;
 				}

 				var g = glyphs[Pair.New(s, c)];
-				if (g.Sprite != null)
-					Game.Renderer.RgbaSpriteRenderer.DrawSprite(g.Sprite,
-						new float2(
-							(int)Math.Round(p.X * deviceScale + g.Offset.X, 0) / deviceScale,
-							p.Y + g.Offset.Y / deviceScale),
-						g.Sprite.Size / deviceScale);
-
-				p += new float2(g.Advance / deviceScale, 0);
-			}
-		}
-
-		float3 Rotate(float3 v, float sina, float cosa, float2 offset)
-		{
-			return new float3(
-				v.X * cosa - v.Y * sina + offset.X,
-				v.X * sina + v.Y * cosa + offset.Y,
-				0);
-		}
-
-		public void DrawText(string text, float2 location, Color c, float angle)
-		{
-			// Offset from the baseline position to the top-left of the glyph for rendering
-			var offset = new float2(0, size);
-			var cosa = (float)Math.Cos(-angle);
-			var sina = (float)Math.Sin(-angle);
-
-			var p = offset;
-			foreach (var s in text)
-			{
-				if (s == '\n')
-				{
-					offset += new float2(0, size);
-					p = offset;
-					continue;
-				}
-
-				var g = glyphs[Pair.New(s, c)];
-				if (g.Sprite != null)
-				{
-					var tl = new float3(
-						(int)Math.Round(p.X * deviceScale + g.Offset.X, 0) / deviceScale,
-						p.Y + g.Offset.Y / deviceScale, 0);
-					var br = tl + g.Sprite.Size / deviceScale;
-					var tr = new float3(br.X, tl.Y, 0);
-					var bl = new float3(tl.X, br.Y, 0);
-
-					Game.Renderer.RgbaSpriteRenderer.DrawSprite(g.Sprite,
-						Rotate(tl, sina, cosa, location),
-						Rotate(tr, sina, cosa, location),
-						Rotate(br, sina, cosa, location),
-						Rotate(bl, sina, cosa, location));
-				}
-
-				p += new float2(g.Advance / deviceScale, 0);
+				Game.Renderer.RgbaSpriteRenderer.DrawSprite(g.Sprite,
+					new float2(
+						(int)Math.Round(p.X + g.Offset.X, 0),
+						p.Y + g.Offset.Y));
+				p.X += g.Advance;
 			}
 		}

@@ -142,10 +85,10 @@ namespace OpenRA.Graphics
 		{
 			if (offset > 0)
 			{
-				DrawText(text, location + new float2(-offset / deviceScale, 0), bg);
-				DrawText(text, location + new float2(offset / deviceScale, 0), bg);
-				DrawText(text, location + new float2(0, -offset / deviceScale), bg);
-				DrawText(text, location + new float2(0, offset / deviceScale), bg);
+				DrawText(text, location + new float2(-offset, 0), bg);
+				DrawText(text, location + new float2(offset, 0), bg);
+				DrawText(text, location + new float2(0, -offset), bg);
+				DrawText(text, location + new float2(0, offset), bg);
 			}

 			DrawText(text, location, fg);
@@ -153,7 +96,7 @@ namespace OpenRA.Graphics

 		public void DrawTextWithContrast(string text, float2 location, Color fg, Color bgDark, Color bgLight, int offset)
 		{
-			DrawTextWithContrast(text, location, fg, GetContrastColor(fg, bgDark, bgLight), offset);
+			DrawTextWithContrast(text, location, fg, WidgetUtils.GetContrastColor(fg, bgDark, bgLight), offset);
 		}

 		public void DrawTextWithShadow(string text, float2 location, Color fg, Color bg, int offset)
@@ -166,20 +109,7 @@ namespace OpenRA.Graphics

 		public void DrawTextWithShadow(string text, float2 location, Color fg, Color bgDark, Color bgLight, int offset)
 		{
-			DrawTextWithShadow(text, location, fg, GetContrastColor(fg, bgDark, bgLight), offset);
-		}
-
-		public void DrawTextWithShadow(string text, float2 location, Color fg, Color bg, int offset, float angle)
-		{
-			if (offset != 0)
-				DrawText(text, location + new float2(offset, offset), bg, angle);
-
-			DrawText(text, location, fg, angle);
-		}
-
-		public void DrawTextWithShadow(string text, float2 location, Color fg, Color bgDark, Color bgLight, int offset, float angle)
-		{
-			DrawTextWithShadow(text, location, fg, GetContrastColor(fg, bgDark, bgLight), offset, angle);
+			DrawTextWithShadow(text, location, fg, WidgetUtils.GetContrastColor(fg, bgDark, bgLight), offset);
 		}

 		public int2 Measure(string text)
@@ -193,43 +123,45 @@ namespace OpenRA.Graphics

 		GlyphInfo CreateGlyph(Pair<char, Color> c)
 		{
-			var glyph = font.CreateGlyph(c.First, size, deviceScale);
+			face.LoadChar(c.First, LoadFlags.Default, LoadTarget.Normal);
+			face.Glyph.RenderGlyph(RenderMode.Normal);

-			if (glyph.Data == null)
-			{
-				return new GlyphInfo
-				{
-					Sprite = null,
-					Advance = 0,
-					Offset = int2.Zero
-				};
-			}
+			var size = new Size((int)face.Glyph.Metrics.Width, (int)face.Glyph.Metrics.Height);
+			var s = builder.Allocate(size);

-			var s = builder.Allocate(glyph.Size);
 			var g = new GlyphInfo
 			{
 				Sprite = s,
-				Advance = glyph.Advance,
-				Offset = glyph.Offset
+				Advance = (float)face.Glyph.Metrics.HorizontalAdvance,
+				Offset = new int2(face.Glyph.BitmapLeft, -face.Glyph.BitmapTop)
 			};

-			var dest = s.Sheet.GetData();
-			var destStride = s.Sheet.Size.Width * 4;
-
-			for (var j = 0; j < s.Size.Y; j++)
+			// A new bitmap is generated each time this property is accessed, so we do need to dispose it.
+			using (var bitmap = face.Glyph.Bitmap)
 			{
-				for (var i = 0; i < s.Size.X; i++)
+				unsafe
 				{
-					var p = glyph.Data[j * glyph.Size.Width + i];
-					if (p != 0)
-					{
-						var q = destStride * (j + s.Bounds.Top) + 4 * (i + s.Bounds.Left);
-						var pmc = Util.PremultiplyAlpha(Color.FromArgb(p, c.Second));
+					var p = (byte*)bitmap.Buffer;
+					var dest = s.Sheet.GetData();
+					var destStride = s.Sheet.Size.Width * 4;

-						dest[q] = pmc.B;
-						dest[q + 1] = pmc.G;
-						dest[q + 2] = pmc.R;
-						dest[q + 3] = pmc.A;
+					for (var j = 0; j < s.Size.Y; j++)
+					{
+						for (var i = 0; i < s.Size.X; i++)
+						{
+							if (p[i] != 0)
+							{
+								var q = destStride * (j + s.Bounds.Top) + 4 * (i + s.Bounds.Left);
+								var pmc = Util.PremultiplyAlpha(Color.FromArgb(p[i], c.Second));
+
+								dest[q] = pmc.B;
+								dest[q + 1] = pmc.G;
+								dest[q + 2] = pmc.R;
+								dest[q + 3] = pmc.A;
+							}
+						}
+
+						p += bitmap.Pitch;
 					}
 				}
 			}
@@ -239,14 +171,9 @@ namespace OpenRA.Graphics
 			return g;
 		}

-		static Color GetContrastColor(Color fgColor, Color bgDark, Color bgLight)
-		{
-			return fgColor == Color.White || fgColor.GetBrightness() > 0.33 ? bgDark : bgLight;
-		}
-
 		public void Dispose()
 		{
-			font.Dispose();
+			face.Dispose();
 		}
 	}

--- a/OpenRA.Game/Graphics/SpriteLoader.cs
+++ b/OpenRA.Game/Graphics/SpriteLoader.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,8 +9,8 @@
 */
 #endregion

-using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.IO;
 using System.Linq;
 using OpenRA.FileSystem;
@@ -20,7 +20,7 @@ namespace OpenRA.Graphics
 {
 	public interface ISpriteLoader
 	{
-		bool TryParseSprite(Stream s, out ISpriteFrame[] frames, out TypeDictionary metadata);
+		bool TryParseSprite(Stream s, out ISpriteFrame[] frames);
 	}

 	public interface ISpriteFrame
@@ -48,8 +48,6 @@ namespace OpenRA.Graphics
 		readonly IReadOnlyFileSystem fileSystem;

 		readonly Dictionary<string, List<Sprite[]>> sprites = new Dictionary<string, List<Sprite[]>>();
-		readonly Dictionary<string, ISpriteFrame[]> unloadedFrames = new Dictionary<string, ISpriteFrame[]>();
-		readonly Dictionary<string, TypeDictionary> metadata = new Dictionary<string, TypeDictionary>();

 		public SpriteCache(IReadOnlyFileSystem fileSystem, ISpriteLoader[] loaders, SheetBuilder sheetBuilder)
 		{
@@ -58,76 +56,34 @@ namespace OpenRA.Graphics
 			this.loaders = loaders;
 		}

-		/// <summary>
-		/// Returns the first set of sprites with the given filename.
-		/// If getUsedFrames is defined then the indices returned by the function call
-		/// are guaranteed to be loaded.  The value of other indices in the returned
-		/// array are undefined and should never be accessed.
-		/// </summary>
-		public Sprite[] this[string filename, Func<int, IEnumerable<int>> getUsedFrames = null]
+		Sprite[] LoadSprite(string filename, List<Sprite[]> cache)
+		{
+			var sprite = SpriteLoader.GetSprites(fileSystem, filename, loaders, SheetBuilder);
+			cache.Add(sprite);
+			return sprite;
+		}
+
+		/// <summary>Returns the first set of sprites with the given filename.</summary>
+		public Sprite[] this[string filename]
 		{
 			get
 			{
 				var allSprites = sprites.GetOrAdd(filename);
 				var sprite = allSprites.FirstOrDefault();
-
-				ISpriteFrame[] unloaded;
-				if (!unloadedFrames.TryGetValue(filename, out unloaded))
-					unloaded = null;
-
-				// This is the first time that the file has been requested
-				// Load all of the frames into the unused buffer and initialize
-				// the loaded cache (initially empty)
-				if (sprite == null)
-				{
-					TypeDictionary fileMetadata = null;
-					unloaded = FrameLoader.GetFrames(fileSystem, filename, loaders, out fileMetadata);
-					unloadedFrames[filename] = unloaded;
-					metadata[filename] = fileMetadata;
-
-					sprite = new Sprite[unloaded.Length];
-					allSprites.Add(sprite);
-				}
-
-				// HACK: The sequency code relies on side-effects from getUsedFrames
-				var indices = getUsedFrames != null ? getUsedFrames(sprite.Length) :
-					Enumerable.Range(0, sprite.Length);
-
-				// Load any unused frames into the SheetBuilder
-				if (unloaded != null)
-				{
-					foreach (var i in indices)
-					{
-						if (unloaded[i] != null)
-						{
-							sprite[i] = SheetBuilder.Add(unloaded[i]);
-							unloaded[i] = null;
-						}
-					}
-
-					// All frames have been loaded
-					if (unloaded.All(f => f == null))
-						unloadedFrames.Remove(filename);
-				}
-
-				return sprite;
+				return sprite ?? LoadSprite(filename, allSprites);
 			}
 		}

-		/// <summary>
-		/// Returns a TypeDictionary containing any metadata defined by the frame
-		/// or null if the frame does not define metadata.
-		/// </summary>
-		public TypeDictionary FrameMetadata(string filename)
+		/// <summary>Returns all instances of sets of sprites with the given filename</summary>
+		public IEnumerable<Sprite[]> AllCached(string filename)
 		{
-			TypeDictionary fileMetadata;
-			if (!metadata.TryGetValue(filename, out fileMetadata))
-			{
-				FrameLoader.GetFrames(fileSystem, filename, loaders, out fileMetadata);
-				metadata[filename] = fileMetadata;
-			}
+			return sprites.GetOrAdd(filename);
+		}

-			return fileMetadata;
+		/// <summary>Loads and caches a new instance of sprites with the given filename</summary>
+		public Sprite[] Reload(string filename)
+		{
+			return LoadSprite(filename, sprites.GetOrAdd(filename));
 		}
 	}

@@ -137,20 +93,24 @@ namespace OpenRA.Graphics

 		public FrameCache(IReadOnlyFileSystem fileSystem, ISpriteLoader[] loaders)
 		{
-			TypeDictionary metadata;
-			frames = new Cache<string, ISpriteFrame[]>(filename => FrameLoader.GetFrames(fileSystem, filename, loaders, out metadata));
+			frames = new Cache<string, ISpriteFrame[]>(filename => SpriteLoader.GetFrames(fileSystem, filename, loaders));
 		}

 		public ISpriteFrame[] this[string filename] { get { return frames[filename]; } }
 	}

-	public static class FrameLoader
+	public static class SpriteLoader
 	{
-		public static ISpriteFrame[] GetFrames(IReadOnlyFileSystem fileSystem, string filename, ISpriteLoader[] loaders, out TypeDictionary metadata)
+		public static Sprite[] GetSprites(IReadOnlyFileSystem fileSystem, string filename, ISpriteLoader[] loaders, SheetBuilder sheetBuilder)
+		{
+			return GetFrames(fileSystem, filename, loaders).Select(a => sheetBuilder.Add(a)).ToArray();
+		}
+
+		public static ISpriteFrame[] GetFrames(IReadOnlyFileSystem fileSystem, string filename, ISpriteLoader[] loaders)
 		{
 			using (var stream = fileSystem.Open(filename))
 			{
-				var spriteFrames = GetFrames(stream, loaders, out metadata);
+				var spriteFrames = GetFrames(stream, loaders);
 				if (spriteFrames == null)
 					throw new InvalidDataException(filename + " is not a valid sprite file!");

@@ -158,13 +118,11 @@ namespace OpenRA.Graphics
 			}
 		}

-		public static ISpriteFrame[] GetFrames(Stream stream, ISpriteLoader[] loaders, out TypeDictionary metadata)
+		public static ISpriteFrame[] GetFrames(Stream stream, ISpriteLoader[] loaders)
 		{
 			ISpriteFrame[] frames;
-			metadata = null;
-
 			foreach (var loader in loaders)
-				if (loader.TryParseSprite(stream, out frames, out metadata))
+				if (loader.TryParseSprite(stream, out frames))
 					return frames;

 			return null;
--- a/OpenRA.Game/Graphics/SpriteRenderable.cs
+++ b/OpenRA.Game/Graphics/SpriteRenderable.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,13 +10,14 @@
 #endregion

 using System.Collections.Generic;
-using OpenRA.Primitives;
+using System.Drawing;
+using System.Linq;

 namespace OpenRA.Graphics
 {
 	public struct SpriteRenderable : IRenderable, IFinalizedRenderable
 	{
-		public static readonly IEnumerable<IRenderable> None = new IRenderable[0];
+		public static readonly IEnumerable<IRenderable> None = new IRenderable[0].AsEnumerable();

 		readonly Sprite sprite;
 		readonly WPos pos;
--- a/OpenRA.Game/Graphics/SpriteRenderer.cs
+++ b/OpenRA.Game/Graphics/SpriteRenderer.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,7 +10,7 @@
 #endregion

 using System;
-using OpenRA.Primitives;
+using System.Drawing;

 namespace OpenRA.Graphics
 {
@@ -18,97 +18,45 @@ namespace OpenRA.Graphics
 	{
 		readonly Renderer renderer;
 		readonly IShader shader;
+		readonly Action renderAction;

 		readonly Vertex[] vertices;
-		readonly Sheet[] sheets = new Sheet[7];
-
+		Sheet currentSheet;
 		BlendMode currentBlend = BlendMode.Alpha;
 		int nv = 0;
-		int ns = 0;

 		public SpriteRenderer(Renderer renderer, IShader shader)
 		{
 			this.renderer = renderer;
 			this.shader = shader;
 			vertices = new Vertex[renderer.TempBufferSize];
+			renderAction = () => renderer.DrawBatch(vertices, nv, PrimitiveType.TriangleList);
 		}

 		public void Flush()
 		{
 			if (nv > 0)
 			{
-				for (var i = 0; i < ns; i++)
-				{
-					shader.SetTexture("Texture{0}".F(i), sheets[i].GetTexture());
-					sheets[i] = null;
-				}
+				shader.SetTexture("DiffuseTexture", currentSheet.GetTexture());

-				renderer.Context.SetBlendMode(currentBlend);
-				shader.PrepareRender();
-				renderer.DrawBatch(vertices, nv, PrimitiveType.TriangleList);
-				renderer.Context.SetBlendMode(BlendMode.None);
+				renderer.Device.SetBlendMode(currentBlend);
+				shader.Render(renderAction);
+				renderer.Device.SetBlendMode(BlendMode.None);

 				nv = 0;
-				ns = 0;
+				currentSheet = null;
 			}
 		}

-		int2 SetRenderStateForSprite(Sprite s)
+		void SetRenderStateForSprite(Sprite s)
 		{
 			renderer.CurrentBatchRenderer = this;

-			if (s.BlendMode != currentBlend || nv + 6 > renderer.TempBufferSize)
+			if (s.BlendMode != currentBlend || s.Sheet != currentSheet || nv + 6 > renderer.TempBufferSize)
 				Flush();

 			currentBlend = s.BlendMode;
-
-			// Check if the sheet (or secondary data sheet) have already been mapped
-			var sheet = s.Sheet;
-			var sheetIndex = 0;
-			for (; sheetIndex < ns; sheetIndex++)
-				if (sheets[sheetIndex] == sheet)
-					break;
-
-			var secondarySheetIndex = 0;
-			var ss = s as SpriteWithSecondaryData;
-			if (ss != null)
-			{
-				var secondarySheet = ss.SecondarySheet;
-				for (; secondarySheetIndex < ns; secondarySheetIndex++)
-					if (sheets[secondarySheetIndex] == secondarySheet)
-						break;
-			}
-
-			// Make sure that we have enough free samplers to map both if needed, otherwise flush
-			var needSamplers = (sheetIndex == ns ? 1 : 0) + (secondarySheetIndex == ns ? 1 : 0);
-			if (ns + needSamplers >= sheets.Length)
-			{
-				Flush();
-				sheetIndex = 0;
-				if (ss != null)
-					secondarySheetIndex = 1;
-			}
-
-			if (sheetIndex >= ns)
-			{
-				sheets[sheetIndex] = sheet;
-				ns += 1;
-			}
-
-			if (secondarySheetIndex >= ns && ss != null)
-			{
-				sheets[secondarySheetIndex] = ss.SecondarySheet;
-				ns += 1;
-			}
-
-			return new int2(sheetIndex, secondarySheetIndex);
-		}
-
-		internal void DrawSprite(Sprite s, float3 location, float paletteTextureIndex, float3 size)
-		{
-			var samplers = SetRenderStateForSprite(s);
-			Util.FastCreateQuad(vertices, location + s.FractionalOffset * size, s, samplers, paletteTextureIndex, nv, size);
-			nv += 6;
+			currentSheet = s.Sheet;
 		}

 		public void DrawSprite(Sprite s, float3 location, PaletteReference pal)
@@ -121,33 +69,44 @@ namespace OpenRA.Graphics
 			DrawSprite(s, location, pal.TextureIndex, size);
 		}

+		void DrawSprite(Sprite s, float3 location, float paletteTextureIndex, float3 size)
+		{
+			SetRenderStateForSprite(s);
+			Util.FastCreateQuad(vertices, location + s.FractionalOffset * size, s, paletteTextureIndex, nv, size);
+			nv += 6;
+		}
+
+		// For RGBASpriteRenderer, which doesn't use palettes
+		public void DrawSprite(Sprite s, float3 location)
+		{
+			DrawSprite(s, location, 0, s.Size);
+		}
+
+		public void DrawSprite(Sprite s, float3 location, float3 size)
+		{
+			DrawSprite(s, location, 0, size);
+		}
+
 		public void DrawSprite(Sprite s, float3 a, float3 b, float3 c, float3 d)
 		{
-			var samplers = SetRenderStateForSprite(s);
-			Util.FastCreateQuad(vertices, a, b, c, d, s, samplers, 0, nv);
+			SetRenderStateForSprite(s);
+			Util.FastCreateQuad(vertices, a, b, c, d, s, 0, nv);
+			nv += 6;
+		}
+
+		public void DrawSprite(Sprite s, Vertex[] sourceVertices, int offset)
+		{
+			SetRenderStateForSprite(s);
+			Array.Copy(sourceVertices, offset, vertices, nv, 6);
 			nv += 6;
 		}

 		public void DrawVertexBuffer(IVertexBuffer<Vertex> buffer, int start, int length, PrimitiveType type, Sheet sheet, BlendMode blendMode)
 		{
-			shader.SetTexture("Texture0", sheet.GetTexture());
-			renderer.Context.SetBlendMode(blendMode);
-			shader.PrepareRender();
-			renderer.DrawBatch(buffer, start, length, type);
-			renderer.Context.SetBlendMode(BlendMode.None);
-		}
-
-		// For RGBAColorRenderer
-		internal void DrawRGBAVertices(Vertex[] v)
-		{
-			renderer.CurrentBatchRenderer = this;
-
-			if (currentBlend != BlendMode.Alpha || nv + v.Length > renderer.TempBufferSize)
-				Flush();
-
-			currentBlend = BlendMode.Alpha;
-			Array.Copy(v, 0, vertices, nv, v.Length);
-			nv += v.Length;
+			shader.SetTexture("DiffuseTexture", sheet.GetTexture());
+			renderer.Device.SetBlendMode(blendMode);
+			shader.Render(() => renderer.DrawBatch(buffer, start, length, type));
+			renderer.Device.SetBlendMode(BlendMode.None);
 		}

 		public void SetPalette(ITexture palette)
--- a/OpenRA.Game/Graphics/TargetLineRenderable.cs
+++ b/OpenRA.Game/Graphics/TargetLineRenderable.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,8 +10,8 @@
 #endregion

 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
-using OpenRA.Primitives;

 namespace OpenRA.Graphics
 {
@@ -19,15 +19,11 @@ namespace OpenRA.Graphics
 	{
 		readonly IEnumerable<WPos> waypoints;
 		readonly Color color;
-		readonly int width;
-		readonly int markerSize;

-		public TargetLineRenderable(IEnumerable<WPos> waypoints, Color color, int width = 1, int markerSize = 1)
+		public TargetLineRenderable(IEnumerable<WPos> waypoints, Color color)
 		{
 			this.waypoints = waypoints;
 			this.color = color;
-			this.width = width;
-			this.markerSize = markerSize;
 		}

 		public WPos Pos { get { return waypoints.First(); } }
@@ -46,23 +42,23 @@ namespace OpenRA.Graphics
 			if (!waypoints.Any())
 				return;

-			var sw = width / wr.Viewport.Zoom;
+			var iz = 1 / wr.Viewport.Zoom;
 			var first = wr.Screen3DPosition(waypoints.First());
 			var a = first;
 			foreach (var b in waypoints.Skip(1).Select(pos => wr.Screen3DPosition(pos)))
 			{
-				Game.Renderer.WorldRgbaColorRenderer.DrawLine(a, b, sw, color);
-				DrawTargetMarker(wr, color, b, markerSize);
+				Game.Renderer.WorldRgbaColorRenderer.DrawLine(a, b, iz, color);
+				DrawTargetMarker(wr, color, b);
 				a = b;
 			}

 			DrawTargetMarker(wr, color, first);
 		}

-		public static void DrawTargetMarker(WorldRenderer wr, Color color, float3 location, int size = 1)
+		public static void DrawTargetMarker(WorldRenderer wr, Color color, float3 location)
 		{
-			var sw = size / wr.Viewport.Zoom;
-			var offset = new float2(sw, sw);
+			var iz = 1 / wr.Viewport.Zoom;
+			var offset = new float2(iz, iz);
 			var tl = location - offset;
 			var br = location + offset;
 			Game.Renderer.WorldRgbaColorRenderer.FillRect(tl, br, color);
--- a/OpenRA.Mods.Common/Traits/World/TerrainRenderer.cs
+++ b/OpenRA.Mods.Common/Traits/World/TerrainRenderer.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,31 +9,21 @@
 */
 #endregion

+using System;
 using System.Collections.Generic;
-using OpenRA.Graphics;
 using OpenRA.Traits;

-namespace OpenRA.Mods.Common.Traits
+namespace OpenRA.Graphics
 {
-	public class TerrainRendererInfo : ITraitInfo
-	{
-		public object Create(ActorInitializer init) { return new TerrainRenderer(init.World); }
-	}
-
-	public sealed class TerrainRenderer : IRenderTerrain, IWorldLoaded, INotifyActorDisposing
+	sealed class TerrainRenderer : IDisposable
 	{
 		readonly Map map;
 		readonly Dictionary<string, TerrainSpriteLayer> spriteLayers = new Dictionary<string, TerrainSpriteLayer>();
-		Theater theater;
-		bool disposed;
+		readonly Theater theater;

-		public TerrainRenderer(World world)
+		public TerrainRenderer(World world, WorldRenderer wr)
 		{
 			map = world.Map;
-		}
-
-		void IWorldLoaded.WorldLoaded(World world, WorldRenderer wr)
-		{
 			theater = wr.Theater;

 			foreach (var template in map.Rules.TileSet.Templates)
@@ -62,7 +52,7 @@ namespace OpenRA.Mods.Common.Traits
 				kv.Value.Update(cell, palette == kv.Key ? sprite : null);
 		}

-		void IRenderTerrain.RenderTerrain(WorldRenderer wr, Viewport viewport)
+		public void Draw(WorldRenderer wr, Viewport viewport)
 		{
 			foreach (var kv in spriteLayers.Values)
 				kv.Draw(wr.Viewport);
@@ -71,18 +61,13 @@ namespace OpenRA.Mods.Common.Traits
 				r.Render(wr);
 		}

-		void INotifyActorDisposing.Disposing(Actor self)
+		public void Dispose()
 		{
-			if (disposed)
-				return;
-
 			map.Tiles.CellEntryChanged -= UpdateCell;
 			map.Height.CellEntryChanged -= UpdateCell;

 			foreach (var kv in spriteLayers.Values)
 				kv.Dispose();
-
-			disposed = true;
 		}
 	}
 }
--- a/OpenRA.Game/Graphics/TerrainSpriteLayer.cs
+++ b/OpenRA.Game/Graphics/TerrainSpriteLayer.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,8 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.IO;
-using OpenRA.Primitives;

 namespace OpenRA.Graphics
 {
@@ -46,7 +46,7 @@ namespace OpenRA.Graphics
 			rowStride = 6 * map.MapSize.X;

 			vertices = new Vertex[rowStride * map.MapSize.Y];
-			vertexBuffer = Game.Renderer.Context.CreateVertexBuffer(vertices.Length);
+			vertexBuffer = Game.Renderer.Device.CreateVertexBuffer(vertices.Length);
 			emptySprite = new Sprite(sheet, Rectangle.Empty, TextureChannel.Alpha);

 			wr.PaletteInvalidated += UpdatePaletteIndices;
@@ -87,12 +87,8 @@ namespace OpenRA.Graphics
 			else
 				sprite = emptySprite;

-			// The vertex buffer does not have geometry for cells outside the map
-			if (!map.Tiles.Contains(uv))
-				return;
-
 			var offset = rowStride * uv.V + 6 * uv.U;
-			Util.FastCreateQuad(vertices, pos, sprite, int2.Zero, palette.TextureIndex, offset, sprite.Size);
+			Util.FastCreateQuad(vertices, pos, sprite, palette.TextureIndex, offset, sprite.Size);

 			dirtyRows.Add(uv.V);
 		}
--- a/OpenRA.Game/Graphics/Theater.cs
+++ b/OpenRA.Game/Graphics/Theater.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,8 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
-using OpenRA.Primitives;
 using OpenRA.Support;

 namespace OpenRA.Graphics
@@ -85,7 +85,7 @@ namespace OpenRA.Graphics

 							// s and ss are guaranteed to use the same sheet
 							// because of the custom terrain sheet allocation
-							s = new SpriteWithSecondaryData(s, s.Sheet, ss.Bounds, ss.Channel);
+							s = new SpriteWithSecondaryData(s, ss.Bounds, ss.Channel);
 						}

 						return s;
--- a/OpenRA.Game/Graphics/UISpriteRenderable.cs
+++ b/OpenRA.Game/Graphics/UISpriteRenderable.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -9,7 +9,7 @@
 */
 #endregion

-using OpenRA.Primitives;
+using System.Drawing;

 namespace OpenRA.Graphics
 {
--- a/OpenRA.Game/Graphics/Util.cs
+++ b/OpenRA.Game/Graphics/Util.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -10,8 +10,8 @@
 #endregion

 using System;
-using OpenRA.FileFormats;
-using OpenRA.Primitives;
+using System.Drawing;
+using System.Drawing.Imaging;

 namespace OpenRA.Graphics
 {
@@ -19,25 +19,24 @@ namespace OpenRA.Graphics
 	{
 		// yes, our channel order is nuts.
 		static readonly int[] ChannelMasks = { 2, 1, 0, 3 };
+		static readonly float[] ChannelSelect = { 0.2f, 0.4f, 0.6f, 0.8f };

-		public static void FastCreateQuad(Vertex[] vertices, float3 o, Sprite r, int2 samplers, float paletteTextureIndex, int nv, float3 size)
+		public static void FastCreateQuad(Vertex[] vertices, float3 o, Sprite r, float paletteTextureIndex, int nv, float3 size)
 		{
 			var b = new float3(o.X + size.X, o.Y, o.Z);
 			var c = new float3(o.X + size.X, o.Y + size.Y, o.Z + size.Z);
 			var d = new float3(o.X, o.Y + size.Y, o.Z + size.Z);
-			FastCreateQuad(vertices, o, b, c, d, r, samplers, paletteTextureIndex, nv);
+			FastCreateQuad(vertices, o, b, c, d, r, paletteTextureIndex, nv);
 		}

-		public static void FastCreateQuad(Vertex[] vertices, float3 a, float3 b, float3 c, float3 d, Sprite r, int2 samplers, float paletteTextureIndex, int nv)
+		public static void FastCreateQuad(Vertex[] vertices, float3 a, float3 b, float3 c, float3 d, Sprite r, float paletteTextureIndex, int nv)
 		{
 			float sl = 0;
 			float st = 0;
 			float sr = 0;
 			float sb = 0;
+			var attribC = ChannelSelect[(int)r.Channel];

-			// See shp.vert for documentation on the channel attribute format
-			var attribC = r.Channel == TextureChannel.RGBA ? 0x02 : ((byte)r.Channel) << 1 | 0x01;
-			attribC |= samplers.X << 6;
 			var ss = r as SpriteWithSecondaryData;
 			if (ss != null)
 			{
@@ -45,18 +44,15 @@ namespace OpenRA.Graphics
 				st = ss.SecondaryTop;
 				sr = ss.SecondaryRight;
 				sb = ss.SecondaryBottom;
-
-				attribC |= ((byte)ss.SecondaryChannel) << 4 | 0x08;
-				attribC |= samplers.Y << 9;
+				attribC = -(attribC + ChannelSelect[(int)ss.SecondaryChannel] / 10);
 			}

-			var fAttribC = (float)attribC;
-			vertices[nv] = new Vertex(a, r.Left, r.Top, sl, st, paletteTextureIndex, fAttribC);
-			vertices[nv + 1] = new Vertex(b, r.Right, r.Top, sr, st, paletteTextureIndex, fAttribC);
-			vertices[nv + 2] = new Vertex(c, r.Right, r.Bottom, sr, sb, paletteTextureIndex, fAttribC);
-			vertices[nv + 3] = new Vertex(c, r.Right, r.Bottom, sr, sb, paletteTextureIndex, fAttribC);
-			vertices[nv + 4] = new Vertex(d, r.Left, r.Bottom, sl, sb, paletteTextureIndex, fAttribC);
-			vertices[nv + 5] = new Vertex(a, r.Left, r.Top, sl, st, paletteTextureIndex, fAttribC);
+			vertices[nv] = new Vertex(a, r.Left, r.Top, sl, st, paletteTextureIndex, attribC);
+			vertices[nv + 1] = new Vertex(b, r.Right, r.Top, sr, st, paletteTextureIndex, attribC);
+			vertices[nv + 2] = new Vertex(c, r.Right, r.Bottom, sr, sb, paletteTextureIndex, attribC);
+			vertices[nv + 3] = new Vertex(c, r.Right, r.Bottom, sr, sb, paletteTextureIndex, attribC);
+			vertices[nv + 4] = new Vertex(d, r.Left, r.Bottom, sl, sb, paletteTextureIndex, attribC);
+			vertices[nv + 5] = new Vertex(a, r.Left, r.Top, sl, st, paletteTextureIndex, attribC);
 		}

 		public static void FastCopyIntoChannel(Sprite dest, byte[] src)
@@ -81,43 +77,53 @@ namespace OpenRA.Graphics
 			}
 		}

-		public static void FastCopyIntoSprite(Sprite dest, Png src)
+		public static void FastCopyIntoSprite(Sprite dest, Bitmap src)
 		{
-			var destData = dest.Sheet.GetData();
-			var destStride = dest.Sheet.Size.Width;
-			var width = dest.Bounds.Width;
-			var height = dest.Bounds.Height;
-
-			unsafe
+			var createdTempBitmap = false;
+			if (src.PixelFormat != PixelFormat.Format32bppArgb)
 			{
-				// Cast the data to an int array so we can copy the src data directly
-				fixed (byte* bd = &destData[0])
+				src = src.CloneWith32bbpArgbPixelFormat();
+				createdTempBitmap = true;
+			}
+
+			try
+			{
+				var destData = dest.Sheet.GetData();
+				var destStride = dest.Sheet.Size.Width;
+				var width = dest.Bounds.Width;
+				var height = dest.Bounds.Height;
+
+				var srcData = src.LockBits(src.Bounds(),
+					ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
+
+				unsafe
 				{
-					var data = (int*)bd;
-					var x = dest.Bounds.Left;
-					var y = dest.Bounds.Top;
+					var c = (int*)srcData.Scan0;

-					var k = 0;
-					for (var j = 0; j < height; j++)
+					// Cast the data to an int array so we can copy the src data directly
+					fixed (byte* bd = &destData[0])
 					{
-						for (var i = 0; i < width; i++)
-						{
-							Color cc;
-							if (src.Palette == null)
-							{
-								var r = src.Data[k++];
-								var g = src.Data[k++];
-								var b = src.Data[k++];
-								var a = src.Data[k++];
-								cc = Color.FromArgb(a, r, g, b);
-							}
-							else
-								cc = src.Palette[src.Data[k++]];
+						var data = (int*)bd;
+						var x = dest.Bounds.Left;
+						var y = dest.Bounds.Top;

-							data[(y + j) * destStride + x + i] = PremultiplyAlpha(cc).ToArgb();
+						for (var j = 0; j < height; j++)
+						{
+							for (var i = 0; i < width; i++)
+							{
+								var cc = Color.FromArgb(*(c + (j * srcData.Stride >> 2) + i));
+								data[(y + j) * destStride + x + i] = PremultiplyAlpha(cc).ToArgb();
+							}
 						}
 					}
 				}
+
+				src.UnlockBits(srcData);
+			}
+			finally
+			{
+				if (createdTempBitmap)
+					src.Dispose();
 			}
 		}

@@ -317,31 +323,12 @@ namespace OpenRA.Graphics
 			return mtx;
 		}

-		public static float[] MakeFloatMatrix(Int32Matrix4x4 imtx)
+		public static float[] MakeFloatMatrix(int[] imtx)
 		{
-			var multipler = 1f / imtx.M44;
-			return new[]
-			{
-				imtx.M11 * multipler,
-				imtx.M12 * multipler,
-				imtx.M13 * multipler,
-				imtx.M14 * multipler,
-
-				imtx.M21 * multipler,
-				imtx.M22 * multipler,
-				imtx.M23 * multipler,
-				imtx.M24 * multipler,
-
-				imtx.M31 * multipler,
-				imtx.M32 * multipler,
-				imtx.M33 * multipler,
-				imtx.M34 * multipler,
-
-				imtx.M41 * multipler,
-				imtx.M42 * multipler,
-				imtx.M43 * multipler,
-				imtx.M44 * multipler,
-			};
+			var fmtx = new float[16];
+			for (var i = 0; i < 16; i++)
+				fmtx[i] = imtx[i] * 1f / imtx[15];
+			return fmtx;
 		}

 		public static float[] MatrixAABBMultiply(float[] mtx, float[] bounds)
@@ -352,16 +339,13 @@ namespace OpenRA.Graphics
 			var iz = new uint[] { 2, 5, 2, 5, 2, 5, 2, 5 };

 			// Vectors to opposing corner
-			var ret = new[]
-			{
-				float.MaxValue, float.MaxValue, float.MaxValue,
-				float.MinValue, float.MinValue, float.MinValue
-			};
+			var ret = new float[] { float.MaxValue, float.MaxValue, float.MaxValue,
+				float.MinValue, float.MinValue, float.MinValue };

 			// Transform vectors and find new bounding box
 			for (var i = 0; i < 8; i++)
 			{
-				var vec = new[] { bounds[ix[i]], bounds[iy[i]], bounds[iz[i]], 1 };
+				var vec = new float[] { bounds[ix[i]], bounds[iy[i]], bounds[iz[i]], 1 };
 				var tvec = MatrixVectorMultiply(mtx, vec);

 				ret[0] = Math.Min(ret[0], tvec[0] / tvec[3]);
--- a/OpenRA.Game/Graphics/Vertex.cs
+++ b/OpenRA.Game/Graphics/Vertex.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
--- a/OpenRA.Game/Graphics/Viewport.cs
+++ b/OpenRA.Game/Graphics/Viewport.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,8 +11,8 @@

 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
-using OpenRA.Primitives;

 namespace OpenRA.Graphics
 {
@@ -80,7 +80,7 @@ namespace OpenRA.Graphics
 			}
 		}

-		public static long LastMoveRunTime = 0;
+		public static long TicksSinceLastMove = 0;
 		public static int2 LastMousePos;

 		float ClosestTo(float[] collection, float target)
@@ -311,4 +311,4 @@ namespace OpenRA.Graphics
 			}
 		}
 	}
-}
+}
--- a/OpenRA.Mods.Cnc/Graphics/Voxel.cs
+++ b/OpenRA.Mods.Cnc/Graphics/Voxel.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
@@ -11,29 +11,25 @@

 using System;
 using System.Linq;
-using OpenRA.Graphics;
-using OpenRA.Mods.Cnc.FileFormats;
-using OpenRA.Primitives;
+using OpenRA.FileFormats;

-namespace OpenRA.Mods.Cnc.Graphics
+namespace OpenRA.Graphics
 {
 	struct Limb
 	{
 		public float Scale;
 		public float[] Bounds;
 		public byte[] Size;
-		public ModelRenderData RenderData;
+		public VoxelRenderData RenderData;
 	}

-	public class Voxel : IModel
+	public class Voxel
 	{
-		readonly Limb[] limbData;
-		readonly float[] transforms;
-		readonly uint frames;
-		readonly uint limbs;
+		Limb[] limbData;
+		float[] transforms;

-		uint IModel.Frames { get { return frames; } }
-		uint IModel.Sections { get { return limbs; } }
+		public readonly uint Frames;
+		public readonly uint Limbs;

 		public Voxel(VoxelLoader loader, VxlReader vxl, HvaReader hva)
 		{
@@ -41,14 +37,14 @@ namespace OpenRA.Mods.Cnc.Graphics
 				throw new InvalidOperationException("Voxel and hva limb counts don't match");

 			transforms = hva.Transforms;
-			frames = hva.FrameCount;
-			limbs = hva.LimbCount;
+			Frames = hva.FrameCount;
+			Limbs = hva.LimbCount;

 			limbData = new Limb[vxl.LimbCount];
 			for (var i = 0; i < vxl.LimbCount; i++)
 			{
 				var vl = vxl.Limbs[i];
-				var l = default(Limb);
+				var l = new Limb();
 				l.Scale = vl.Scale;
 				l.Bounds = (float[])vl.Bounds.Clone();
 				l.Size = (byte[])vl.Size.Clone();
@@ -59,14 +55,14 @@ namespace OpenRA.Mods.Cnc.Graphics

 		public float[] TransformationMatrix(uint limb, uint frame)
 		{
-			if (frame >= frames)
-				throw new ArgumentOutOfRangeException("frame", "Only {0} frames exist.".F(frames));
-			if (limb >= limbs)
-				throw new ArgumentOutOfRangeException("limb", "Only {1} limbs exist.".F(limbs));
+			if (frame >= Frames)
+				throw new ArgumentOutOfRangeException("frame", "Only {0} frames exist.".F(Frames));
+			if (limb >= Limbs)
+				throw new ArgumentOutOfRangeException("limb", "Only {1} limbs exist.".F(Limbs));

 			var l = limbData[limb];
 			var t = new float[16];
-			Array.Copy(transforms, 16 * (limbs * frame + limb), t, 0, 16);
+			Array.Copy(transforms, 16 * (Limbs * frame + limb), t, 0, 16);

 			// Fix limb position
 			t[12] *= l.Scale * (l.Bounds[3] - l.Bounds[0]) / l.Size[0];
@@ -80,7 +76,7 @@ namespace OpenRA.Mods.Cnc.Graphics
 			return t;
 		}

-		public ModelRenderData RenderData(uint limb)
+		public VoxelRenderData RenderData(uint limb)
 		{
 			return limbData[limb].RenderData;
 		}
@@ -101,21 +97,18 @@ namespace OpenRA.Mods.Cnc.Graphics

 		public float[] Bounds(uint frame)
 		{
-			var ret = new[]
-			{
-				float.MaxValue, float.MaxValue, float.MaxValue,
-				float.MinValue, float.MinValue, float.MinValue
-			};
+			var ret = new float[] { float.MaxValue, float.MaxValue, float.MaxValue,
+				float.MinValue, float.MinValue, float.MinValue };

-			for (uint j = 0; j < limbs; j++)
+			for (uint j = 0; j < Limbs; j++)
 			{
 				var l = limbData[j];
-				var b = new[]
+				var b = new float[]
 				{
 					0, 0, 0,
-					l.Bounds[3] - l.Bounds[0],
-					l.Bounds[4] - l.Bounds[1],
-					l.Bounds[5] - l.Bounds[2]
+					(l.Bounds[3] - l.Bounds[0]),
+					(l.Bounds[4] - l.Bounds[1]),
+					(l.Bounds[5] - l.Bounds[2])
 				};

 				// Calculate limb bounding box
@@ -129,33 +122,5 @@ namespace OpenRA.Mods.Cnc.Graphics

 			return ret;
 		}
-
-		public Rectangle AggregateBounds
-		{
-			get
-			{
-				// Corner offsets
-				var ix = new uint[] { 0, 0, 0, 0, 3, 3, 3, 3 };
-				var iy = new uint[] { 1, 1, 4, 4, 1, 1, 4, 4 };
-				var iz = new uint[] { 2, 5, 2, 5, 2, 5, 2, 5 };
-
-				// Calculate the smallest sphere that covers the model limbs
-				var rSquared = 0f;
-				for (var f = 0U; f < frames; f++)
-				{
-					var bounds = Bounds(f);
-					for (var i = 0; i < 8; i++)
-					{
-						var x = bounds[ix[i]];
-						var y = bounds[iy[i]];
-						var z = bounds[iz[i]];
-						rSquared = Math.Max(rSquared, x * x + y * y + z * z);
-					}
-				}
-
-				var r = (int)Math.Sqrt(rSquared) + 1;
-				return Rectangle.FromLTRB(-r, -r, r, r);
-			}
-		}
 	}
 }
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Paul Chote	c00ed84b25	Fix player joins resetting the server timestep.	2016-10-19 21:05:37 +02:00
Paul Chote	7f7f037ffd	Fix a desync in GpsDot.IsTargetableBy. World.ShroudExplores depends on RenderPlayer, which makes it completely bogus for this purpose.	2016-10-19 19:16:41 +02:00
SoScared	bd8dc18bad	move AA towards traditional	2016-10-15 15:57:28 +01:00
Oliver Brakmann	dd50004d91	Fix yak attacks in Evacuation	2016-10-15 12:02:12 +02:00
abcdefg30	b4033c609e	Fix yaks trying to attack invalid targets	2016-10-14 19:00:58 +02:00
abcdefg30	9800b3513e	Add a CanTarget method to lua	2016-10-14 19:00:46 +02:00
abcdefg30	047f94613b	Target.FromActor never returns a TargetType.FrozenActor	2016-10-14 19:00:17 +02:00
RoosterDragon	74c69f835c	Make sure AI can deploy an MCV when it lacks a base.	2016-10-14 18:24:12 +02:00
Paul Chote	bea6523f5e	Add support for an older/alternative d2k release.	2016-10-14 18:14:42 +02:00
abcdefg30	38dab424fb	Fix soviet units not attack moving to their rally points and remove unnecessary (duplicated) code from the tick function (the call to IdleHunt inside SpawnSovietUnits is enough)	2016-10-13 20:40:46 +02:00
abcdefg30	605f3b65a9	Fix soviet units not stopping to hunt after being captured in Exodus	2016-10-13 20:40:46 +02:00
abcdefg30	1f7a483fd6	Make HIJACKER unbuildable in the Evacuation mission We don't allow building Mechanics as well	2016-10-13 20:40:46 +02:00
abcdefg30	d82549ec00	Merge pull request #12212 from obrakmann/remove-ai-capturing Remove AI capturing from TD and RA, and AIs using mechanics and medics in RA	2016-10-12 14:53:18 +02:00
Oliver Brakmann	d003885bca	Remove medics and mechanics from RA AIs	2016-10-11 21:08:56 +02:00
Oliver Brakmann	f907403ca7	Remove AI capturing from TD and RA	2016-10-11 20:50:36 +02:00
Paul Chote	29c13a4c26	Work around an initialisation order conflict.	2016-10-09 14:15:17 +02:00
Paul Chote	379ece7592	Fix non-selectable support actor health bars.	2016-10-08 15:32:05 +02:00
RoosterDragon	5b815ca2cf	Marshal results in QueryDevices correctly.	2016-10-07 16:27:01 +02:00
abcdefg30	391c378118	Fix floating text showing up beneath shroud	2016-10-06 21:30:14 +02:00
Paul Chote	bd8aeb3cae	Allow spys to infiltrate fake structures in RA.	2016-10-01 20:21:39 +02:00
Paul Chote	bab4cac2d7	Add InfiltrateForDecoration trait.	2016-10-01 20:21:39 +02:00
Oliver Brakmann	98664ce3e5	Log unknown orders instead of crashing with an NIE	2016-09-30 16:13:57 +02:00
Jonas A. Lind	57065de55e	Changed MSUB Description Simplified initial text and fixed strong/weak vs.	2016-09-28 13:39:10 +02:00
SoScared	2dd0e05423	AA Missile Sub + Tweak	2016-09-28 13:38:51 +02:00
abcdefg30	9b158b459c	Remove a bogus LZRange field together with an unnecessary ParaDrop definition	2016-09-26 21:25:27 +02:00
Matthias Mailänder	80b06d1dd2	Only save a syncreport.log when a desync occurs.	2016-09-26 21:25:18 +02:00
Paul Chote	a33321390f	Hack around the Lua API.	2016-09-26 19:04:28 +02:00
Paul Chote	1607173769	Change aircraft default to move to rally point after resupplying.	2016-09-26 19:04:28 +02:00
Paul Chote	bf957f09ff	Add AbortOnResupply property to cancel aircraft activities on resupply.	2016-09-26 19:04:28 +02:00
Paul Chote	dbc8b0a99a	Remove unnecessarily queued ResupplyAircraft activity.	2016-09-26 19:04:28 +02:00
Paul Chote	799b07cd1e	Avoid landing-dances when issuing mixed full/empty aircraft RTB orders.	2016-09-26 19:04:28 +02:00
Paul Chote	c83b8b712e	Fix integer overflows in Wangle.ArcTan.	2016-09-26 18:36:17 +02:00
reaperrr	c7adfd43a0	Fix LaserZap not being removed if HitAnim is not defined This avoids degrading performance over time as well as an (albeit unlikely) OutOfMemoryException.	2016-09-26 14:54:27 +02:00
SoScared	55c1b6a663	Camo Pillbox HP 450	2016-09-25 22:01:22 +02:00
SoScared	2693f9de1c	Mammoth Tank speed 50	2016-09-25 22:01:07 +02:00
Paul Chote	dc684e244e	Use CosmeticRandom for picking smudge type.	2016-09-24 20:49:03 +02:00
Oliver Brakmann	8334e9adeb	Fix setting MayYieldReservation when there is no reservation	2016-09-24 20:32:01 +02:00
Oliver Brakmann	e55f2f3bee	Fix helicopters not taking off when their target got covered by shroud	2016-09-24 20:31:46 +02:00
Oliver Brakmann	59ee9bcb96	Prevent an infinite loop when planes go out of ammo and all airfields are gone	2016-09-24 20:31:29 +02:00
Oliver Brakmann	b3ba4f5ca2	Use the yield reservation logic for helicopters as well. Oops.	2016-09-24 20:30:51 +02:00
Oliver Brakmann	e628d756fb	Remove brain-dead logic from TakeOff 1. TakeOff's Tick() method never checks itself whether it is canceled 2. If NextActivity is null, TakeOff is the only activity on the queue 3. Takeoff canceling the queue then just cancels itself, with no effect at all 4. If Takeoff however is running as an inner activity, it will cancel the complete main queue, wrecking all sorts of havoc	2016-09-24 20:30:40 +02:00
Paul Chote	4f55edad74	Report mission briefings in the mp lobby.	2016-09-23 23:52:28 +02:00
abcdefg30	43a30f6497	Render WithDecoration above shroud	2016-09-23 23:51:56 +02:00
Oliver Brakmann	a84815a832	Fix AI still producing units with captured factories in Nod missions	2016-09-23 19:42:42 +01:00
Paul Chote	d3dae5c34f	Add a range check to Repair.	2016-09-23 18:57:24 +01:00
Oliver Brakmann	8a666b973f	Fix kicking players joining servers hosting a map with non-default rules Specifically, rules that remove traits which implement ILobbyOptions	2016-09-23 18:48:14 +01:00
Paul Chote	4a039166e4	Fix control group decoration position.	2016-09-23 18:34:20 +01:00
abcdefg30	25a63530d3	Split a UnitCommandWidget from WorldCommandWidget	2016-09-22 17:52:21 +01:00
abcdefg30	5349db0384	Fix spectators not being able to issue commands in TD	2016-09-22 17:52:14 +01:00
Paul Chote	60244d4910	Clean up ClientPings when a player drops from the server.	2016-09-21 18:17:40 +02:00
abcdefg30	a7251b7e95	Fix beacons not being cancelable	2016-09-21 18:14:06 +02:00
RoosterDragon	6e56349a26	Change Game.RunTime to a long to prevent overflow.	2016-09-21 18:13:56 +02:00
Paul Chote	cb553fbe15	Converting dates to string using the InvariantCulture.	2016-09-21 17:57:14 +02:00
Paul Chote	955f39620b	Restore missing GameUid.	2016-09-21 17:57:03 +02:00
Paul Chote	af5402d41c	Timestamp syncreport and exception log files.	2016-09-21 17:56:56 +02:00
Paul Chote	aaa1484643	Read data from all connections to the server.	2016-09-21 17:46:33 +02:00
Paul Chote	fb7b79e8fc	Fix d2k lobby admin icon.	2016-09-21 17:11:49 +02:00
Chris Forbes	1f0d98344b	server: Fix server getting wedged after map query with bad minimap If the mapserver returned an unusable minimap blob, we'd end up dropping the resulting exceptions on the floor, and committing a completely broken MapPreview, which would then blow up the tail end of the map change process, and all future ValidateClient calls after players join (which itself was handled by kicking the player and logging some noise of dubious value). Adjusts exception handling in a number of places to log the exception rather than dropping it on the floor, and makes the mapserver response parsing tolerant of bogus minimap blobs -- in this case, we'd rather just have no minimap. Candidate for stable, as it fixes a bug present in the current release and the current playtest series. Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>	2016-09-21 04:06:36 +01:00
Oliver Brakmann	37155ec9dd	Remove workarounds for ownership change breakage from 'Infiltration'	2016-09-20 09:16:09 +01:00
Oliver Brakmann	5e3f0721ce	Fix crashing when a spy's "real" owner gets changed	2016-09-20 09:16:02 +01:00
Matthias Mailänder	90a7d1f3e9	Fix a crash when no sync report is available.	2016-09-19 20:02:23 +02:00
Oliver Brakmann	3971b99363	Add advisory upgrade rule for WithRearmAnimation	2016-09-18 16:20:33 +02:00
Oliver Brakmann	b99c4903a6	Add WithRearmAnimation to buildings that need it	2016-09-18 16:20:09 +02:00
Oliver Brakmann	f7e5cce0ab	Fix locking an airfield that is rearming aircraft while being sold	2016-09-18 16:19:26 +02:00
abcdefg30	19983e9e7f	Fix the music resetting from time to time	2016-09-18 15:57:45 +02:00
Oliver Brakmann	b84bd1762b	Fix not being able to close the chat window in replays	2016-09-18 15:31:00 +02:00
Paul Chote	9623bbebc8	Improve error message.	2016-09-18 15:27:43 +02:00
Paul Chote	7becb92a00	Don't crash if a replay can't be read.	2016-09-18 15:27:32 +02:00
Paul Chote	a812b937f3	Other misc fixes in Platform.	2016-09-18 14:17:34 +02:00
Paul Chote	8bbced1582	Fix string comparison cultures in Platform.	2016-09-18 14:17:21 +02:00
Paul Chote	a4eb40efe4	Resolve a bare "." to the game install path.	2016-09-18 14:17:07 +02:00
Paul Chote	214d7325bd	Account for terrain height in AttackBomber.	2016-09-18 14:08:02 +02:00
Paul Chote	be09392c35	Give window modes human-friendly names. * Fullscreen -> Fullscreen (Legacy) * Pseudo-fullscreen -> Fullscreen	2016-09-18 12:51:13 +02:00
Paul Chote	f6e892a2dd	Work around incorrect mono behaviour under OSX.	2016-09-17 18:22:56 +02:00
Paul Chote	cdd70e7daf	Fix explicit oramap path lint checking.	2016-09-17 14:13:53 +02:00
Oliver Brakmann	4cf98effa4	Remove 'campaign-' prefix from disable-experience.yaml files	2016-09-16 17:32:29 +01:00
abcdefg30	1d8048c133	Create a PlayLaunchSounds method in SupportPower.cs	2016-09-12 19:14:17 +02:00
abcdefg30	ecbedad308	Fix the support power SpeechNotifications not being played to the correct player	2016-09-12 19:14:17 +02:00
Mustafa Alperen Seki	31c99d8071	Fix Sardaukar's prerequisite	2016-09-12 15:34:05 +02:00
Paul Chote	303a2be612	Fix bogus observer stats graph positioning.	2016-09-09 21:16:32 +02:00
abcdefg30	ece2f8494e	Remove the TopBottomSpacing from the score screen player list	2016-09-09 12:14:29 +02:00
clemty	23f9998c7e	gdi07 map yaml polish	2016-09-07 23:50:53 +02:00
abc013	fcab4e9eed	Fixed enemy missiles not being deflected by Radar Jammers	2016-09-05 23:06:11 +02:00