unity用刚体做玩家移动和玩家看向鼠标点

 1  //人物移动的一些基础属性
 2     private float speed = 5;
 3     private float h, v;
 4     private Rigidbody rig;
 5     private Camera cam;
 6     private Animator anm;
 7     private bool isMove=false;
 8     // Use this for initialization
 9     void Start () {
10 
11         rig = gameObject.GetComponent<Rigidbody>();//寻找刚体组件
12         cam = Camera.main; //设置主摄像机
13         anm = gameObject.GetComponent<Animator>();//动画组件
14     }
15     
16     // Update is called once per frame
17     void Update () {
18         //人物移动
19         h = Input.GetAxisRaw("Horizontal"); //寻找对应的轴
20         v = Input.GetAxisRaw("Vertical");
21         Vector3 v3 = new Vector3(h, 0, v).normalized;
22         rig.velocity = v3 * speed;//给刚体施加一个力。  因为是施加力的原因 所以要把旋转给锁定 防止 物体翻滚。
23         rig.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ | RigidbodyConstraints.FreezeRotationY | RigidbodyConstraints.FreezePositionY;
24         if (h == 0 && v == 0)
25         {
26             isMove = false;//这是动画系列 可以不用考虑  
27             anm.SetBool("Move", false );
28         }
29         else
30         {
31             isMove = true;
32             anm.SetBool("Move", true);
33         }
34         
35         
36 
37         //人物朝向鼠标点击的方向
38         Ray ray = cam.ScreenPointToRay(Input.mousePosition);
39         RaycastHit hit;
40         if (Physics.Raycast (ray ,out hit,1<<8))
41         {
42             Vector3 lookat = new Vector3(hit.point.x, transform.position.y, hit.point.z);
43             lookat = lookat - transform.position;
44            //旋转目标朝向
45             transform.rotation = Quaternion.LookRotation(lookat);
46         }