> You can do a lot of stuff with plain morphs and stepping, too. In the 
> Animations framework, the focus was on a more convenient programming 
> interface that decouples system load and animation time. So, even if 
> your Squeak image has plenty of things to do, the animation X will 
> finish after, for example, 250 ms. Yet, you might only see the first and 
> the last update then. :D In some way, the Animations framework is kind 
> of Morphic stepping but it offers each participant a synchronized 
> progression of time, which can then be used to update or interpolate the 
> animation progress. Such things are difficult with Morphic stepping 
> because the "call me again in 20 ms" via #stepTime treats time different 
> for each morph.

This is the very same idea I had for my Space Invaders game. Very 
efficient for smooth motion, indeed.

(Saucers! http://www.zogotounga.net/comp/saucers.htm)

Stef