The zdoom-2.1.6-src.7z file you have requested: Modifications / ZDoom / v216 / ZDoom 2.1.6 Source Code - 1.95mb is not available. Perhaps try browsing all files for the game Doom and upload any files you want to share or are missing. This is the only information we could locate:
This is the source code for ZDoom 2.1.6. It has been compressed with 7-Zip to conserve bandwidth and download time. You can build it with Visual C++ 2005 or GCC.