物件的碰撞 ( 一个人的样子 )　　我们在制作游戏的时候经常遇到关于碰撞的处理，这是一个非常简单的例子，告诉大家如何使用碰撞检测-collision objects (like a person) in the production of the game, often encountered on the collision, it is a very simple example to tell you how to use the Collision Detection