**** Finish porting to Windows (should be only file.c and args.c, I think) *** Switch over to sprites rather than totally separate structures. * Rocks collide with each other? *** Add a scripting language and separate game logic from the engine. Forth? Scheme? Lua? ** Switch to a TTF font and all ray-traced graphics * Then we can run at the native screen size * Deltas on high score display?