Legacy Documentation: Version 5.4
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MonoBehaviour.OnCollisionExit(Collision)

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Parameters

other The Collision data associated with this collision.

Description

OnCollisionExit is called when this collider/rigidbody has stopped touching another rigidbody/collider.

In contrast to OnTriggerExit, OnCollisionExit 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.

function OnCollisionExit(collisionInfo : Collision) {
    print("No longer in contact with " + collisionInfo.transform.name);
}
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void OnCollisionExit(Collision collisionInfo) { print("No longer in contact with " + collisionInfo.transform.name); } }

OnCollisionExit can be a co-routine, simply use the yield statement in the function.