[ART] Animated Grass

[Mudbill]

I think the only animation implemented is the animated material that loops through a series of images, though I think those have to be applied to a spotlight to work, and thus are color distorted (because that's the only thing they were used for in-game, like water ripples and projector display). I might be wrong though, but I've never gotten a material to animate in a normal way. The built-in method is very feature-less and basic.