private void Awake()
    {
        // singleton-type setup
        if (instance == null)
        {
            instance = this;
        }
        else if (instance != this)
        {
            Destroy(gameObject);
        }

        // Place all objects sent to Destroy scene on DontDestroyOnLoad
        DontDestroyOnLoad(allCubes);
        DontDestroyOnLoad(allBoundingFloors);
        DontDestroyOnLoad(allEggs);
    }
 // Use this for initialization
 void Start()
 {
     gameManager = BuildGameManagerScript.instance;
 }