Sprite to sprite collision detector. Collision detection is invoked when a sprite is moving, thus only testing sprites that are moving with all other sprites on the list. It tests rows to each other istead of pixels to speed up the process.
After 0.9.1, sprite collisions will no longer be detected from bitmaps, but instead from CollisionModels. Uses Bitarrays for faster detection, custom shapes are possible via XMPs.
Collision detector without the pixel precision function.