Thanks, mikkov! That helped a bunch. Last night when I was working on this, I was too tired to actually play the game, so I missed a rather important thing - right-clicking is needed for gameplay to function. >_< Support for that is in the works; my current idea is to use the hardware fullscreen button as a modifier. (This does assume a right-handed player, but I can't think of any better ideas at the moment. If anyone else can, please let me know.) After that's done, I'll test everything out, but I think that should be all that's needed.