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terteton Portal’s physics engine rebuilt in 25KB—on a graphing calculator

>>http://benryves.com/images/nostromo/bsp/2010.11.28/Walkthrou....

Not bad but it is not a 3D Physics engine. Just a renderer. Not the same thing. Still pretty impressive.

terteton City birds use cigarette butts to smoke out parasites

I up-voted you just now but it seems that conservation of karma means I will soon be down-voted.

terteton Portal’s physics engine rebuilt in 25KB—on a graphing calculator

It would not be that hard to write a 3D physics engine for a TI-89 calculator (Assuming you already know how to write a 3D physics engine, which I do). Problem is, it would be useless since it will probably take tens of seconds (if not more) to calculate each frame.