You might want to have a look at my raycasting engine, Sabre.
Here:
viewtopic.php?f=6&t=12644Also, I think you haven't noticed that you can speed up the raycasting engine you use by doing this:
Go to Config -> Game Properties and change the 'Frame rate'. Currently it's set to 16, which means 16 frames per second, which is quite little.
Try changing it to 32, for example.
