nice!

I really thought about programming something similar but I decided to go with a
less complex lighting model at first. And another reason why I'm using my current
approch is my lazyness because I didn't want to create a model for every sprite to
apply multiple textures.

Edit: now that I think of it, maybe ent_setskin works for that

Maybe I'll use something similar later, but at the moment it is more important
to get used to the artstyle ( making lots of sprites ) and things like this.

Edit#2: ..aand thanks for the second link