unity中rigidbody的作用,unity的rigidbody在哪

Unity3D中冻结Rigidbody的Position及Rotation注意事项 1.利用程序冻结刚体的Position using System.Collections;using System.Collections.Generic;using UnityEngine;public class pengZhuang : MonoBehaviour{//Start is called before the first frame updateprivate Rigidbody rigidbody;void Start(){rigidbody = this.GetComponent<Rigidbody>(); //此脚本挂在此刚体所属物体物体上，并获得刚体组件}void Update(){rigidbody.constraints = RigidbodyConstraints.FreezePositionY; //冻结刚体在Y轴上的移动，物体只能在X轴与Z轴组成的平面移动}}

效果图1:

2.利用程序冻结刚体的Rotation using System.Collections;using System.Collections.Generic;using UnityEngine;public class pengZhuang : MonoBehaviour{//Start is called before the first frame updateprivate Rigidbody rigidbody;void Start(){rigidbody = this.GetComponent<Rigidbody>(); //此脚本挂在此刚体所属物体物体上，并获得刚体组件}void Update(){rigidbody.constraints = RigidbodyConstraints.FreezeRotationY; //冻结刚体绕Y轴的旋转，物体只能绕X轴与Z轴旋转}}

效果图2:

3.同时冻结刚体的Position和Rotation using System.Collections;using System.Collections.Generic;using UnityEngine;public class pengZhuang : MonoBehaviour{//Start is called before the first frame updateprivate Rigidbody rigidbody;void Start(){rigidbody = this.GetComponent<Rigidbody>(); //此脚本挂在此刚体所属物体物体上，并获得刚体组件}void Update(){rigidbody.constraints = RigidbodyConstraints.FreezePositionY | RigidbodyConstraints.FreezeRotationY; //冻结刚体在Y轴上的移动,并冻结刚体绕Y轴的旋转}}

效果图3:

4.注意事项 using System.Collections;using System.Collections.Generic;using UnityEngine;public class pengZhuang : MonoBehaviour{//Start is called before the first frame updateprivate Rigidbody rigidbody;void Start(){rigidbody = this.GetComponent<Rigidbody>(); //此脚本挂在此刚体所属物体物体上，并获得刚体组件}void Update(){rigidbody.constraints = RigidbodyConstraints.FreezePositionX;rigidbody.constraints = RigidbodyConstraints.FreezePositionY;rigidbody.constraints = RigidbodyConstraints.FreezePositionZ;rigidbody.constraints = RigidbodyConstraints.FreezeRotationX;rigidbody.constraints = RigidbodyConstraints.FreezeRotationY;rigidbody.constraints = RigidbodyConstraints.FreezeRotationZ;//此代码运行结果只是冻结了绕Z轴旋转}}

请注意，如果要同时冻结多个轴时，不能像如下所示：

rigidbody.constraints = RigidbodyConstraints.FreezePositionX;rigidbody.constraints = RigidbodyConstraints.FreezePositionY;rigidbody.constraints = RigidbodyConstraints.FreezePositionZ;rigidbody.constraints = RigidbodyConstraints.FreezeRotationX;rigidbody.constraints = RigidbodyConstraints.FreezeRotationY;rigidbody.constraints = RigidbodyConstraints.FreezeRotationZ;

后面的程序会覆盖前面的，运行的最后效果只是冻结了刚体绕Z轴旋转。

效果图4:

5.实例（物体着陆碰撞到地面后，冻结物体在Y轴上的移动和绕Z、X轴旋转，使物体可以在水平面上移动旋转） using System.Collections;using System.Collections.Generic;using UnityEngine;public class pengZhuang : MonoBehaviour{ // Start is called before the first frame update private Rigidbody rigidbody; void Start() { rigidbody = this.GetComponent<Rigidbody>(); } private void OnCollisionEnter(Collision collision) { rigidbody.constraints = RigidbodyConstraints.FreezePositionY | RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ; //在此物体发生碰撞时，冻结刚体在Y轴上移动，并冻结刚体绕X轴和Z轴旋转 //最后的效果是物体可以在水平面上移动，可以绕Y轴旋转 }}

效果图5:

6.冻结除某个轴外所有其他的轴 using System.Collections;using System.Collections.Generic;using UnityEngine;public class pengZhuang : MonoBehaviour{//Start is called before the first frame updateprivate Rigidbody rigidbody;void Start(){rigidbody = this.GetComponent<Rigidbody>(); //此脚本挂在此刚体所属物体物体上，并获得刚体组件}void Update(){rigidbody.constraints = ~RigidbodyConstraints.FreezePositionY; //效果见下图}}

效果图6:

如果有不足之处，欢迎留言，相互促进，谢谢！！！