updated 10:15 pm EDT, Mon August 16, 2010
Update reduced CPU hits for sleeping items
Howling Moon has released an update to its physics engine, Chipmunk. The open-source developer utility is a rigid-body Physics library written in C99 and geared for 2D games. Developers can take advantage of circle, convex or beveled line segments and flexible collision detection.
Version 5.3.0 improves sleeping functionality for non-moving physics bodies -- it stresses the CPU up to 90-percent less than previous versions. The update is also iOS 4.0 ready, with updates to the Objective-C bindings aimed specifically at iPhone developers. Users can also access new tutorials, updated documentation and example projects with the new release.
The Chipmunk physics engine is available for free, though donations are encouraged. The SDK is licensed under an unrestrictive, OSI-approved MIT license.