Verlet integration polygons with collision
I REALLY didn’t think it was gonna be this easy… no complex maths, just a bunch of looping and hitTest, hitTestPoint kind of code 
Click for teh Collidin Verlet integratin kick butt multicolored polygons explorer demo
While coding, I was sure I would roast my cpu, maybe run up to 20-30 polygons, but my trusty laptop can churn out 70 shapes at a time before the framerate starts to slowdown. I find it mesmerizing to watch… Cool with 70 shapes, but also very cool to watch a fewer number and actually appreciate the “realism” of the collisions (not perfect, but not bad). It’s late, the code is dirty, time to shut down and watch heroes 
…but if you want the dirty source code, ’tis yours
More to come… am really enjoying this… 
October 9th, 2008 at 9:56 pm
Still looking great, and yeah, framerate is way better than I expected! On collision, the reactionary force seems to be out of proportion of the impact force, which doesn’t really allow the situation to resolve to a restful state as it would in real life (especially with a higher polygon count), tho that would probably mean replacing the hittest code