private Piece getRandomPiece() {
		switch(rand.nextInt(8)) {
		case 0:
			return new Line(start);
		case 1:
			return new L(start);
		case 2:
			return new Squiggly(start);
		case 3:
			return new Square(start);
		case 4:
			return new T(start);
		case 5:
			return new Hook_L(start);
		case 6:
			return new Hook_R(start);
		case 7:
			return new Corner(start);
		default:
			return null;
		}
	}