Use the WASD keys to move. Use arrow keys to shift camera angle. Press Z to show/hide map Move over a red dot to collect it. There are 5 scattered across the map.
r2dav2's raycasting engine, optimized and fixed by me. (yay!) He used too many "y" variables which might have cluttered the scripts. I tore out whatever isn't needed, and fixed the jumping by replacing the "py" in the movement scripts with "pz". You're welcome. Now with collectable dots! :D