Update README.md

Author: data010

README.md

@@ -1,2 +1,30 @@
-# CCOSS
-Cortex Command - Open Source under GNU AGPL v3 (no game data included)
+Cortex Command - open source under GNU AGPL v3 (no game data included)
+
+# Known problems and limitations #
+
+Tested to build only with Visual Studio 2017 for Win32 platform with Visual Studio 2013 toolset installed (You may need to install full VS 2013).
+
+Almost builds with modern toolchains in VS 2017 and VS 2019, but there's some incompatibility in Luabind which fails to compile. Other than that should be fine.
+
+Commercial fmod library was replaced with free SDL Mixer which lacks pitching functionality hence some sound effects will sound differently or incorrectly.
+
+All source and binary dependencies rewuired to buile the project are included.
+
+No game data and most of required runtime DLLs are included, you should get those from the Cortex Command beta branch on Steam.
+
+This version uses a slightly modified version of Allegro. The only difference from the original is a custom window borderless mode implemented to fix fullscreen issues. If you're gonna rebuild Allegro you'l probably need to disable custom calls in FrameMan.
+
+
+# BUILD PROCESS #
+
+
+Use Debug Open Source configuration to debug (be prepared, it's very slow).
+
+Use Final Open Source configuration to build release .exe.
+
+Binaries go to _Bin, you can't run from there outside of the IDE, it won't find required stuff.
+
+You need to copy SDL related dlls from external\lib\win\ next to .exe in order to run it.
+
+
+# CONTACT #