Unity3d相机跟随角色移动

using UnityEngine;
using System.Collections;

public class follwCam : MonoBehaviour {
public Transform targetTr;
public float dist = 10f;
public float height = 3.0f;
public float dampTrace = 20.0f;

public Transform tr;
// Use this for initialization
void Start () {
tr = GetComponent<Transform> ();
}

// Update is called once per frame
void LateUpdate () {
tr.position = Vector3.Lerp (tr.position, targetTr.position - (targetTr.forward * dist) + (Vector3.up * height), Time.deltaTime * dampTrace);
tr.LookAt (targetTr.position);
}
}

targetTr ： 要追踪的游戏对象Transform为变量

dist：与摄像机之间的距离

height ： 设置摄像机的高度

dampTrace ： 实现平滑追踪的变量