Mathematical off-road driving

Drive on an automatically generated terrain! You can edit function(plot) to change what the terrain should be like. By default the terrain will stop at x=1000 but you can change this by editing xmax value Updated Keyboard controls(A/D) and increased friction. Updated distance display - the distance is now displayed as score! If you get upside down, just drag it. I've added lua drag module to this. This level is intended to be a test for my custom generated terrain implementation, not a playable racing game.