I actually have already done the hard work of a full decompilation of SQ3, available here.
I downloaded your de-compiled source code for sq3, but I'm having trouble getting it to compile, I get like 1000 errors for things that should be working just fine. Here is what I'm doing...
First I grabbed a mint copy of sq3
Second I copied your "src" folder and your game.ini into the sq3 folder
Third I used Sci Companion to open the game and I hit compile all...
Then it says that every single line of code is bad