File list (Check if you may need any files):
cdk 相互碰撞(适用圆球)
........................\CDKGroup.as
........................\Circle.as
........................\com
........................\...\coreyoneil
........................\...\..........\collision
........................\...\..........\.........\CDK.as
........................\...\..........\.........\CollisionGroup.as
........................\...\..........\.........\CollisionList.as
........................\Target.as
........................\碰撞试验1.0.fla
........................\碰撞试验1.0.swf