Talk:Petit Forest/@comment-9531161-20140215222646/@comment-9531161-20140215232754

This is tailored towards water animation, but the basic principle is the same. You want to just continue to replace a particular tile's data with different data. This way, you don't have to update every single tile on the screen that needs to be animated, you just update the one tile's data. If you're animating the BG like you animate sprites, then you don't need the first part of the program which creates the animated water tiles.