unity怎么设置相机跟随,unity相机跟随

1.向量转四元数
Quaternion.LookRotation(dir);—>返回值就是一个四元数
2.开始旋转
transform.rotation = Quaternion.Lerp(当前的四元数, 目标四元数, 旋转的速度);
3.普通相机跟随

using System.Collections;using System.Collections.Generic;using UnityEngine;public class CameraMovement : MonoBehaviour { /// <summary> /// 跟随目标 /// </summary> public Transform followTarget; /// <summary> /// 方向向量 /// </summary> private Vector3 dir; private void Start() { //获取方向向量 dir = transform.position - followTarget.position; } private void Update() { transform.position = dir + followTarget.position; }}

4.高级相机跟随,保证看到目标的相机最佳视角

using System.Collections;using System.Collections.Generic;using UnityEngine;public class CameraMovement : MonoBehaviour { /// <summary> /// 俯视距离的偏移量 /// </summary> public float offset = 0.5f; /// <summary> /// 设置中间的相机位置个数 /// </summary> public int gears = 5; /// <summary> /// 跟随目标 /// </summary> public Transform followTarget; /// <summary> /// 方向向量 /// </summary> private Vector3 dir; /// <summary> /// 待选的相机位置(观察点) /// </summary> private Vector3[] readyPosition; /// <summary> /// 射线碰撞检测器 /// </summary> private RaycastHit hit; /// <summary> /// 相机跟随的移动速度 /// </summary> public int moveSpeed = 1; /// <summary> /// 相机旋转的速度 /// </summary> public float turnSpeed = 10f; private void Start() { //获取方向向量 dir = transform.position - followTarget.position; //实例化观察点数组 readyPosition = new Vector3[gears]; } private void Update() { //相机的起点--->相机最佳视角 Vector3 begin = dir + followTarget.position; //相机的终点--->相机最差视角保证能看到玩家 Vector3 end = followTarget.position + Vector3.up * (dir.magnitude - offset); //把起点和终点放到观察点的数组中 readyPosition[0] = begin; readyPosition[readyPosition.Length - 1] = end; //获取相机中间点的位置 for (int i = 1; i < readyPosition.Length - 1; i++) { //求中间点各个点的坐标,比例为i / (gears - 1) readyPosition[i] = Vector3.Lerp(begin, end, i / (readyPosition.Length - 1)); } //备选方案--->前面所有的观察点都看不到玩家 //都看不到就把相机放到最佳视角 Vector3 watchPoint = begin; //遍历观察点数组,挑选我们最佳观察点 for (int i = 0; i < readyPosition.Length; i++) { if (CheckWatchPoint(readyPosition[i])) { //设置观察点 watchPoint = readyPosition[i]; //得到观察点退出循环 break; } } //相机平滑移动到最佳观察点 transform.position = Vector3.Lerp(transform.position, watchPoint, Time.deltaTime * moveSpeed); /* //旋转的不是很平滑 //相机旋转到最佳角度看向玩家 transform.LookAt(followTarget); */ //获取方向向量 Vector3 lookDir = followTarget.position - watchPoint; //获取四元数 Quaternion lookQua = Quaternion.LookRotation(lookDir); //平滑转向玩家 transform.rotation = Quaternion.Lerp(transform.rotation, lookQua, Time.deltaTime * turnSpeed); //固定相机y轴z轴的旋转 transform.eulerAngles = new Vector3(transform.eulerAngles.x, 0, 0); } /// <summary> /// 检测观察点是否可以看到目标 /// </summary> /// <param name="point">待选的观察点</param> /// <returns><c>true</c>看得到<c>false</c>看不到</returns> bool CheckWatchPoint(Vector3 point) { if (Physics.Raycast(point,followTarget.position - point,out hit)) { //如果射线检测到的是玩家 if (hit.collider.tag == "Player") { return true; } } return false; }}

相机跟随一直观察角色背部

using System.Collections;using System.Collections.Generic;using UnityEngine;public class CameraFollow : MonoBehaviour { public Transform target; public float distanceUp = 5f; public float distanceAway = 5f; public float smooth = 2f;//位置平滑移动值 public float camDepthSmooth = 2f; // 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); }}