Question

Description 描述

OnCollisionStay is called once per frame for every collider/rigidbody that is touching rigidbody/collider.

每当该collider/rigidbody碰到其他rigidbody/collider，将在每帧调用OnCollisionStay。通俗的说，

一个碰撞器或刚体碰到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。

In contrast to OnTriggerStay, OnCollisionStay is passed the Collision class and not a Collider. The Collision class contains information about contact points, impact velocity etc. If you don't use collisionInfo in the function, leave out the collisionInfo parameter as this avoids unneccessary calculations. Notes: Collision events are only sent if one of the colliders also has a non-kinematic rigidbody attached. Collision events will be sent to disabled MonoBehaviours, to allow enabling Behaviours in response to collisions. Collision stay events are not sent for sleeping Rigidbodies.

相比OnTriggerStay，OnCollisionStay传递Collision类而不是Collider。Collision类包含接触点，碰撞速度等信息。在这个函数如果你不使用collisionInfo，删去collisionInfo参数以避免不必要的计算。注意，当其中至少一个碰撞盒附加非动力学刚体时碰撞事件才会发送。碰撞事件也发送给禁用的MonoBehaviours，允许启用Behaviour来相应碰撞。 碰撞停留事件不发给休眠的刚体。

JavaScript:

	function OnCollisionStay(collisionInfo : Collision) {
		// Debug-draw all contact points and normals
		for (var contact : ContactPoint in collisionInfo.contacts) {
			Debug.DrawRay(contact.point, contact.normal * 10, Color.white);
		}
	}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    void OnCollisionStay(Collision collisionInfo) {
        foreach (ContactPoint contact in collisionInfo.contacts) {
            Debug.DrawRay(contact.point, contact.normal * 10, Color.white);
        }
    }
}

Collider