Physics and Motion
Pendulums, dynamic circular movement, vectors, forces, etc...

Terrain Collisions
The code is really really condensed, and if you wish to have it be a bit more understandable, see this thread: www.kirupa ...
Steam Engine with Inverse Kinematics
This is, unbelievably, my first foray into AS3. It's a proof of concept for several different ideas. First off, it's a demons ...