Direct port of GCpShapeCache to JavaScript for use with ChipmunkJS and PhysicsEditor.

In an attempt to fill a large gap in the development pipeline for ChipmunkJS, the generic shape loader for JS was ported from its Obj-C counterpart. This is as close to a 1:1 port as was possible, matching the API of the Obj-C version. As such, the code has not been optimized for performance.

Use the loader as you would the Obj-C version:

// load physics data
var sc = gcp.ShapeCache.getInstance();
sc.addShapesWithFile("shapedefs.plist");
	
// set anchor point
sprite.anchorPoint = sc.anchorPointForShape(name);
	
// create the physics shape
var body = sc.createBodyWithName(name, space, sprite);
                              
// set position                                  
body.p = new cc.Point(x,y);