Update: Check out my wiki page for the latest download of WinROTT. 

I managed to move all the C files to C++. It's working! I've made some code improvements and cleaned up quite a bit. The download is here.

I am currently cleaning up all the extern declarations, trying to get everything into correct header files. It's a slow process. I am in the process of creating header files for all of the DirectMusic, Input, Video, etc. source files, as many of the extern declarations are needed for linker resolution.

Enjoy the game.