A-Star Obj-C Pathfinding Demo Updated
A helpful denizen of the web pointed out a bug in the PathFind Demo code which caused the algorithm to hang under certain map situations. The bug has been fixed and the demo XCode project (with updated source code) can be downloaded here.
The FindPath demo is a sample XCode project which shows how to implement the A-Star pathfinding algorithm in Objective-C/Foundation/Cocoa. This updated version also has a nifty (but slow) animation option to watch the algorithm in action.