Question

在unity3d中物体发生碰撞的整个过程中，有几个阶段，分别列出对应的阶段函数

Answer 1

主要是三个阶段：1.Collider.OnCollisionEnter 进入碰撞，
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。
2.Collider.OnCollisionStay 逗留碰撞，
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，

一个碰撞器或刚体触动另一个刚体或碰撞器，在每帧都会调用OnCollisionStay，直到它们之间离开不接触。
3.Collider.OnCollisionExit 退出碰撞，
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。