Unity-相机跟随

using UnityEngine;
using System.Collections;

public class ThirdPersonCamera : MonoBehaviour
{
public float distanceAway; // distance from the back of the craft
public float distanceUp; // distance above the craft
public float smooth; // how smooth the camera movement is

 private GameObject hovercraft;        // to store the hovercraft
 private Vector3 targetPosition;        // the position the camera is trying to be in
 
 Transform follow;
 
 void Start(){
     follow = GameObject.FindWithTag ("Player").transform;    
 }
 
 void LateUpdate ()
 {
     // setting the target position to be the correct offset from the hovercraft
     targetPosition = follow.position + Vector3.up * distanceUp - follow.forward * distanceAway;
     
     // making a smooth transition between it's current position and the position it wants to be in
     transform.position = Vector3.Lerp(transform.position, targetPosition, Time.deltaTime * smooth);
     
    // make sure the camera is looking the right way!
     transform.LookAt(follow);
}

}