public void removePiece(Tetromino current, int x, int y, int orientation){
		boolean[][] tiles = current.getTiles();
		int count = 0;
		int width = current.getTiles()[0].length == 9 ? 3 : 4; // get width (2, 3, or 4) of piece
		width = current.getTiles()[0].length == 4 ? 2 : width;	
		for(int row = 0; row < width; ++row) {
			for(int col = 0; col < width; ++col){ // compare piece with board
				if(tiles[orientation][count++] && !screen[row+y][col+x].isEmpty() && y < 18){
					screen[row+y][col+x] = new Square();
				}
			}
		}
	}