Gotta say I Just started playing around with chipmunk yesterday for my iphone/windows projects and it's everything that I wanted for a physics engine : clarity, small code size(this is really important to me - less code = less bugs = easier to change). I only really had 2 issues:
1) Sleeping objects 2) Continuous physics - and I was about to post about suggestions for sleeping objects. Totally lucked out today - awesome!! will Spend the day in geeky physics heaven tinkering about
My initial verdict on this engine is :
It's great - the tiny code size is win win win all the way
Love the api and extremely clean interface
top work slembcke - I'm mightily impressed!