This is the atlas changes mentioned in #21. It makes the index in the atlas always mean the tile index and not the index into the bytes of the texture. This should make it easy to blit a set of pixels to a specific tile without having to worry about where it is on the texture.
It also adds a 2 more tests 1. involving the size of the texture created by the atlas and 2. testing the set pixels by tile index method
This is the atlas changes mentioned in #21. It makes the index in the atlas always mean the tile index and not the index into the bytes of the texture. This should make it easy to blit a set of pixels to a specific tile without having to worry about where it is on the texture.
It also adds a 2 more tests 1. involving the size of the texture created by the atlas and 2. testing the set pixels by tile index method