public ContactPoint[] contacts ;

描述

物理引擎生成的接触点。应避免使用它,因为它会产生内存垃圾。改用 GetContactGetContacts

每个接触均包含一个接触点、法线和碰撞的两个碰撞体(请参阅 ContactPoint)。 从内部 OnCollisionStayOnCollisionEnter,能够 始终确保 contacts 至少有一个元素。

using UnityEngine;

public class ExampleScript : MonoBehaviour { void OnCollisionStay(Collision collision) { foreach (ContactPoint contact in collision.contacts) { print(contact.thisCollider.name + " hit " + contact.otherCollider.name); // Visualize the contact point Debug.DrawRay(contact.point, contact.normal, Color.white); } } }
// A grenade
// - instantiates a explosion Prefab when hitting a surface
// - then destroys itself

using UnityEngine; using System.Collections;

public class ExampleClass : MonoBehaviour { public Transform explosionPrefab; void OnCollisionEnter(Collision collision) { ContactPoint contact = collision.contacts[0]; Quaternion rot = Quaternion.FromToRotation(Vector3.up, contact.normal); Vector3 pos = contact.point; Instantiate(explosionPrefab, pos, rot); Destroy(gameObject); } }