場景漫遊（wasdqe）

 public GameObject _cam;
    public float mkeystorkeMoveStep = 0.07f;
    private CharacterController controller;
    private Vector3 mWoveDir;
    void Start()
    {
        controller = GetComponent<CharacterController>();
    }
    void Update()
    {
        Cam_Move();
        xuanzhuanScene();
    }
    void xuanzhuanScene()
    {
        if (Input.GetMouseButton(0))
        {
            float mous_x = Input.GetAxis("Mouse X");
            this.transform.Rotate(0, mous_x, 0);
            float mouseY = Input.GetAxis("Mouse Y");
            _cam.transform.Rotate(-mouseY * Time.deltaTime, 0, 0);
            if (_cam.transform.eulerAngles.x > 30 && _cam.transform.eulerAngles.x < 180)
            {
                _cam.transform.eulerAngles = new Vector3(30, _cam.transform.eulerAngles.y, _cam.transform.eulerAngles.z);
            }
            if (_cam.transform.eulerAngles.x < 330 && _cam.transform.eulerAngles.x > 180)
            {
                _cam.transform.eulerAngles = new Vector3(330, _cam.transform.eulerAngles.y, _cam.transform.eulerAngles.z);
            }
        }
    }
    void Cam_Move()
    {
        Vector3 vDir = Vector3.zero;
        if (Input.GetKey("a"))
        {
            vDir.x -= mkeystorkeMoveStep;
        }
        if (Input.GetKey("d"))
        {
            vDir.x += mkeystorkeMoveStep;
        }
        if (Input.GetKey("w"))
        {
            vDir.z += mkeystorkeMoveStep;
        }
        if (Input.GetKey("s"))
        {
            vDir.z -= mkeystorkeMoveStep;
        }
        if (Input.GetKey("q"))
        {
            vDir.y += mkeystorkeMoveStep;
        }
        if (Input.GetKey("e"))
        {
            vDir.y -= mkeystorkeMoveStep;
        }
        mWoveDir = transform.rotation * vDir;
        controller.Move(mWoveDir);

    }