void Start()
{
stage = gameObject.GetComponent<Stage> ();
size = stage.gridSize*2;
tiles = new Tile[size, size];
originOff = size / 4;
origin = AddTile (originOff, originOff, 0);
bump = GetComponent<AudioSource> ();
// Overlay
overlay = gameObject.GetComponent<Overlay>();
overlay.overlayCoords = overlay.RedSquareOverlay();
//overlay.DrawOverlay();
}