unity中相机追随

固定相机跟随，这种相机有一个参考对象，它会保持与该参考对象固定的位置，跟随改参考对象发生移动

using UnityEngine;

using System.Collections;

public class CameraFlow : MonoBehaviour

{

    public Transform target;

    private Vector3 offset;

   void Start()

    {

    //设置相对偏移

      offset = target.position - this.transform.position;

    }

   void Update()

    {

        this.transform.position = target.position - offset;

    }

}

固定相机跟随，带有角度旋转。这一种相机跟随是对第一种相机跟随的改进，在原有基础上面，添加了跟随角度的控制

using UnityEngine;

using System.Collections;

public class CameriaTrack : MonoBehaviour

{

    private Vector3 offset = new Vector3(0,5,4);//相机相对于玩家的位置

    private Transform target;

    private Vector3 pos;

    public float speed = 2;

    // Use this for initialization

    void Start ()

    {

        target = GameObject.FindGameObjectWithTag("Player").transform;

    }

    // Update is called once per frame

    void Update ()

    {

        pos = target.position + offset;

        this.transform.position = Vector3.Lerp(this.transform.position, pos, speed*Time.deltaTime);//调整相机与玩家之间的距离

        Quaternion angel = Quaternion.LookRotation(target.position - this.transform.position);//获取旋转角度

        this.transform.rotation = Quaternion.Slerp(this.transform.rotation, angel, speed * Time.deltaTime);

    }

}

第三人称相机,这种相机跟随。是第三人称角度看向对象的，也就是一直看向对象的后面，如一直显示玩家的后背

using UnityEngine;

using System.Collections;

//相机一直拍摄主角的后背

public class CameraFlow : MonoBehaviour

{

    public Transform target;

    public float distanceUp=15f;

    public float distanceAway = 10f;

    public float smooth = 2f;//位置平滑移动值

    public float camDepthSmooth = 5f;

    // Use this for initialization

    void Start ()

    {

    }

    // Update is called once per frame

    void Update ()

    {

       // 鼠标轴控制相机的远近

        if ((Input.mouseScrollDelta.y < 0 && Camera.main.fieldOfView >= 3) || Input.mouseScrollDelta.y > 0 && Camera.main.fieldOfView <= 80)

        {

            Camera.main.fieldOfView += Input.mouseScrollDelta.y * camDepthSmooth * Time.deltaTime;

        }

    }

    void LateUpdate()

    {

       //相机的位置

        Vector3 disPos = target.position + Vector3.up * distanceUp - target.forward * distanceAway;   transform.position=Vector3.Lerp(transform.position,disPos,Time.deltaTime*smooth);

        //相机的角度

        transform.LookAt(target.position);

    }

}

相机跟随，鼠标控制移动和缩放。相机与观察对象保持一定距离，可以通过鼠标进行上下左右旋转，通过鼠标滚轮进行放大和缩小操作



using UnityEngine;

using System.Collections;

public class CameraFlow : MonoBehaviour

{

    public Transform target;

    Vector3 offset;

    // Use this for initialization

    void Start()

    {

        offset = transform.position - target.position;

    }

    // Update is called once per frame

    void Update()

    {

        transform.position = target.position + offset;

        Rotate();

        Scale();

    }

    //缩放

    private void Scale()

    {

        float dis = offset.magnitude;

        dis += Input.GetAxis("Mouse ScrollWheel") * 5;

        Debug.Log("dis=" + dis);

        if (dis < 10 || dis > 40)

        {

            return;

        }

        offset = offset.normalized * dis;

    }

    //左右上下移动

    private void Rotate()

    {

        if (Input.GetMouseButton(1))

        {

            Vector3 pos = transform.position;

            Vector3 rot = transform.eulerAngles;

            //围绕原点旋转，也可以将Vector3.zero改为 target.position,就是围绕观察对象旋转

            transform.RotateAround(Vector3.zero, Vector3.up, Input.GetAxis("Mouse X") * 10);

            transform.RotateAround(Vector3.zero, Vector3.left, Input.GetAxis("Mouse Y") * 10);

            float x = transform.eulerAngles.x;

            float y = transform.eulerAngles.y;

            Debug.Log("x=" + x);

            Debug.Log("y=" + y);

            //控制移动范围

            if (x < 20 || x > 45 || y < 0 || y > 40)

            {

                transform.position = pos;

                transform.eulerAngles = rot;

            }

            //  更新相对差值

            offset = transform.position - target.position;

        }

    }

}

巴特西

Unity中几种简单的相机跟随

unity中相机追随

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