unity3d射线控制移动

看看效果图

代码：

 1 using UnityEngine;

 2 using System.Collections;

 3 

 4 public class T2 : MonoBehaviour

 5 {

 6 

 7     // Use this for initialization

 8     void Start()

 9     {

10 

11     }

12 

13     //定义射线

14     Ray ray;

15     RaycastHit hit;

16     //是否移动

17     bool isMove;

18     //移动方向

19     Vector3 dir;

20     Vector3 pos;

21 

22     // Update is called once per frame

23     void Update()

24     {

25         //float v = Input.GetAxis("Vertical");

26         //float h = Input.GetAxis("Horizontal");

27         //transform.Translate(transform.forward * v * Time.deltaTime);

28 

29 

30         //transform.Rotate(Vector3.up * h);

31 

32 

33         //鼠标左键按下的时候

34         if (Input.GetMouseButtonDown(0))

35         {

36             //从摄像机发一条射线

37             ray = Camera.main.ScreenPointToRay(Input.mousePosition); ;

38             //如果检测到物体(射线用来检测)

39             if (Physics.Raycast(ray, out hit))

40             {

41                 //将碰撞点的Y值变为transform的Y值

42                 pos = new Vector3(hit.point.x, transform.position.y, hit.point.z);

43 

44 

45                 //hit.point是物体的位置

46                 transform.LookAt(hit.point);

47                 //开始移动

48                 isMove = true;

49                 //求移动方向

50                 //dir = (hit.point - transform.position).normalized;

51 

52                 dir = (pos - transform.position).normalized;

53 

54             }

55         }

56         //如果开始移动

57         if (isMove)

58         {

59             //沿着世界坐标的某一个位置移动

60             transform.Translate(dir * Time.deltaTime * 3, Space.World);

61             //如果距离小于0.5m的时候，停止移动

62             if (Vector3.Distance(transform.position, hit.point) < 0.5f)

63             {

64                 isMove = false;

65             }

66         }

67 

68 

69 

70     }

71 }

 当然。出来用LookAt还可以用LookRotation

using UnityEngine;

using System.Collections;



//加刚体

public class movee : MonoBehaviour

{



    // Use this for initialization

    void Start()

    {



    }



    bool isMove;

    Vector3 dir;



    RaycastHit hit;



    Vector3 hitPoint;



    Quaternion rotation;



    Quaternion originRatation;

    float timer;



    // Update is called once per frame

    void FixedUpdate()

    {

        if (Input.GetMouseButtonDown(0))

        {

            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);



            if (Physics.Raycast(ray, out hit))

            {







                hitPoint = new Vector3(hit.point.x, transform.position.y, hit.point.z);





                //transform.LookAt(hit.point);



                //dir = (hit.point - transform.position).normalized;





                dir = hitPoint - transform.position;





                rotation = Quaternion.LookRotation(dir);



                originRatation = transform.rotation;



                isMove = true;



                timer = 0;



            }

        }

        if (isMove)

        {

            //transform.Translate(dir * Time.deltaTime * 5, Space.World);



            timer += Time.fixedDeltaTime;





            //if (Vector3.Distance(transform.position, hit.point) < 0.5) isMove = false;





            //慢慢旋转过去,这不是匀速的。

            //transform.rotation = Quaternion.Lerp(transform.rotation, rotation, Time.fixedDeltaTime*5);



            //既然想匀速的话，那么起点和终点不变。时间变化

            transform.rotation = Quaternion.Lerp(originRatation, rotation, timer);



            //transform.rotation = rotation; //角度直接等于这个



            if (Quaternion.Angle(transform.rotation, rotation) < 2)

            {

                transform.rotation = rotation;

                isMove = false;

            }



        }

    }



    public void Update()

    {



    }

}