private void renderGhost(Screen screen) {
		Point[] gSelection = tetromino.getGhost(this).getSelection();
		for (Point point : gSelection) {
			int yy = point.getY()-HIDDEN_ROWS;
			if (yy >= 0) {
				int x = point.getX()*BLOCK_SCALE+getX();
				int y = yy*BLOCK_SCALE+getY();
				screen.renderHue(x, y, Art.GHOST, tetromino.getColor() & 0xffffff | 0xff000000);
			}
		}
	}