Calls the method named methodName on every MonoBehaviour in this game object and on every ancestor of the behaviour
在游戏物体每一个MonoBehaviour和每一个behaviour的祖先上调用名为methodName的方法。
OnCollisionEnter is called when this collider/rigidbody has begun touching another rigidbody/collider.
当collider/rigidbody开始触动另一个rigidbody/collider时OnCollisionEnter被调用。
OnCollisionExit is called when this collider/rigidbody has stopped touching another rigidbody/collider.
当 collider/rigidbody停止触动另一个 rigidbody/collider时,OnCollisionExit被调用。
OnCollisionStay is called once per frame for every collider/rigidbody that is touching rigidbody/collider.
每个collider/rigidbody触动rigidbody/collider,将在每帧调用OnCollisionStay。通俗的说,