Tiny Suggestion: Fade Behavior - Size

The Fade Behavior saves a lot of work But I miss a something: The fade behavior should be able to scale the size.

No problem for me, I have already add this to this Behavior. Just suggested for an official release.

Add: It must work with the physical Behavior.

Just lerp the scale.

sprite set scale to lerp(self.scale, 0,self.opacity*0.1)

...oh wait there is no .scale expression.

Perhaps you should ask for that instead.

The .scale expression was asked for before and the main problem was what value should be returned if the object was not uniformly resized? You could just use a instance variable instead though.