collision detection

问题

HI everybody, how can i carry out "collision detection" in my app,which just like this: http://www.gskinner.com/blog/assets/CDTest.swf

Give me some advices,,please..

回答1:

Have a look at CGRectContainsPoint and CGRectIntersectsRect.

来源：https://stackoverflow.com/questions/3584810/collision-detection