void Start()
    {
        if (SteamVR.active == true)
        {
            _hmd = GameObject.Find("VRCamera (eye)");;
        }
        else
        {
            _hmd = GameObject.Find("FallbackObjects");
        }

        se   = GameObject.Find("GameManager").GetComponent <SwitchEnvironment>();
        myRB = GetComponent <Rigidbody>();
    }
 void Start()
 {
     se   = GameObject.Find("GameManager").GetComponent <SwitchEnvironment>();
     myRB = GetComponent <Rigidbody>();
 }