[QUOTE=cacotigon] @TELLES0808: Not sure what you mean by that, modulo division isn't really suitable in this case. Taking the absolute value works fine.
@Ashley: I understand your reasoning, I'm just worried that behaviors, plugins, even collision detection that rely on Sprite.Width/Sprite.Height might suddenly exhibit erratic behavior if the Width/Height could return negative values.
This bug that I just found concerning mirroring/scaling might be related:Mirroring Scaled Images fails
Do you think I should just create separate animations for mirror/flipped images instead of using mirror/flip?[/QUOTE]
Absolute, that`s the word ^^ mod is how we call it in my language