unity第三视角移动,摄像机跟随

1、精选文档，供参考！在以前的仿真项目中用到了第三人称视角的移动，W、S、A、D控制角色的前后左右移动，摄像机跟随角色移动，并且摄像机做了缓冲处理。鼠标右键长按旋转控制镜头旋转，中键滑轮控制镜头拉进拉远。分为两个脚本，CharacterThirdControl挂在角色身上， CameraThirdControl挂在跟随摄像机身上。角色的标签设置为Player 。跟随摄像机为主摄像机（可以根据自己需求改变）。下面直接贴代码，代码中已有注释：using UnityEngine; using System.Collections; RequireComponent(typeof(CharacterCon

2、troller) public classCharacterThirdControl : MonoBehaviour Transform myCamera; /跟随摄像机private CharacterController cc; Vector3 playerDirect; /角色的目标方向Vector3 correctDirect; /为了矫正计算方向向量的误差float perError = 0.2f; /误差与摄像机缓冲存在关系float speed = 0.1f; /速度与 Update的帧数有关，同样数据帧数越多，速度越快Vector3 front; /前Vector3 back;

3、 /后Vector3 left; /左Vector3 right; /右/ Use this for initializationvoid Start() myCamera = Camera.main.transform; /将主摄像机设置为跟随摄像机front = Vector3.zero; back = Vector3.zero; left = Vector3.zero; right = Vector3.zero; correctDirect = Vector3.zero; cc = transform.GetComponent(); void LateUpdate() PlayerCon

4、trol(); / / 计算方向向量函数/ private void CalculateDirection() Vector3 temp = transform.position - myCamera.position; temp = new Vector3(temp.x, 0, temp.z); front = temp; if (correctDirect!=Vector3.zero & Mathf.Abs(correctDirect.x-front.x) perError & Mathf.Abs(correctDirect.z - front.z) perError) /

5、判断是否在误差范围内 front = correctDirect; back = -front; left =newVector3(-front.z, 0, front.x); right = -left; correctDirect = front; 精选文档，供参考！/ / 控制角色移动/ private void PlayerControl() playerDirect = new Vector3(0, 0, 0); CalculateDirection(); /计算角色的方向if (Input.GetAxis( Horizontal ) 0) /右 playerDirect = rig

6、ht; if (Input.GetAxis( Vertical ) 0) if (Input.GetAxis( Horizontal ) 0) /前右 playerDirect = front + right; else playerDirect = front; /前 if (Input.GetAxis( Vertical ) 0) if (Input.GetAxis( Horizontal ) 0) /后右 playerDirect = back + right; else playerDirect = back; /后 if (playerDirect != Vector3.zero)

7、playerDirect += transform.position; MoveSpeed(playerDirect); / / 调整角色方向，控制角色移动精选文档，供参考！/ private void MoveSpeed(Vector3 direct) transform.LookAt( new Vector3(direct.x, transform.position.y, direct.z); cc.Move(transform.forward * speed); using UnityEngine; using System.Collections; public classCamera

8、ThirdControl : MonoBehaviour Range(0, 1) SerializeField float target_offsety = 0.6f; /高度差Range(0, 90) SerializeField float initRotate = 15f; /摄像机角度Range(2, 10) SerializeField float DISTANCE_DEAFULT = 3.2f; /设置摄像机与物体之间的距离Transform target; /摄像机跟随的角色private float distance; private Vector3 playerTarget;

9、 private float lastRotate; / Use this for initializationvoid Start() lastRotate = initRotate; distance = DISTANCE_DEAFULT; /设置摄像机与角色的距离target = GameObject.FindGameObjectWithTag(Player).transform; /找到角色playerTarget = new Vector3(target.position.x, target.position.y + target_offsety, target.position.z

10、); /设置摄像机对着角色的位置Quaternion cr = Quaternion.Euler(initRotate, transform.eulerAngles.y, 0); /设置摄像机与角色之间的角度/计算摄像机的位置Vector3 positon = playerTarget; positon += cr * Vector3.back * distance; transform.position = positon; transform.rotation = target.rotation; transform.LookAt(playerTarget); / Update is ca

11、lled once per framevoid Update() /鼠标右键控制镜头转动if (Input.GetMouseButton(1) 精选文档，供参考！transform.RotateAround(playerTarget, Vector3.up, Input.GetAxis( Mouse X )*3f); /更新摄像机的位置角度等信息void LateUpdate() playerTarget = new Vector3(target.position.x, target.position.y + target_offsety, target.position.z); Quater

12、nion cr = Quaternion.Euler(initRotate, transform.eulerAngles.y, 0); Vector3 positon = playerTarget + (cr * Vector3.back * distance); RaycastHit hits = Physics.RaycastAll( new Ray(playerTarget, (positon - playerTarget).normalized); distance = DISTANCE_DEAFULT; if (hits.Length 0) RaycastHit stand = ne

13、w RaycastHit(); float maxDistance = float.MaxValue; foreach (RaycastHit hit in hits) if (!hit.collider.isTrigger & != & hit.distance DISTANCE_DEAFULT) distance = DISTANCE_DEAFULT; positon = playerTarget + (cr * Vector3.back * distance); transform.position = Vector3.Lerp(transform.position, positon, 0.5f); /用于摄像机的缓冲， 与误差存在关系Debug.DrawRay(playerTarget, positon - playerTarget, Color.red); if (lastRotate != initRotate) transform.LookAt(playerTarget); lastRotate = initRotate; /鼠标中键控制镜头远近float fov = this.GetComponent().fieldO