Here are a few C++/SDL source codes you can port over!

http://www.sourcecodesworld.com/sour...y.asp?CatId=45

http://www.doomworld.com/classicdoom/ports/

http://www.identicalsoftware.com/btbuilder/

http://www.identicalsoftware.com/ogs/


Edit: Whoops I posted this in the wrong forum, mabye someone could move it!