Configure sprites per level
Suggestion of @dazo
Fall back on the default sprites when not overridden.
The level could choose a directory, and someone (the Game
?) inform SpriteFramesFactory
about it?
This one is tricky, and is getting trickier with time.
We'll also need to configure those per world. Makes sense to be able to configure them per level as well, along the way.
Edited by Dominique Merle