Unity摄像机跟随

private Transform player;
    public float speed = 2;
    public float up = 3.04f, away = 4.55f;
    void Start()
    {
        player = GameObject.FindWithTag("Player").transform;
    }

    // Update is called once per frame
    void Update()
    {
        if (player!=null)
        {
            Vector3 targetpos = player.position + Vector3.up * up - player.forward * away;
            transform.position = Vector3.Lerp(transform.position,targetpos,speed * Time.deltaTime);
            transform.LookAt(player);
        }
    }