Tunnel Runner

This is my first Petit Computer program. It's been a few years since I last coded anything so forgive the lack of optimization. The object of the game is to manuever your character, "v," through the never-ending tunnel. You gain points for every line you pass and there are multiple speeds at which you can play. The faster you go, the more points accumulate per line. The controls are simply left and right to move and A/B to select.