[Ufo13]

Prima:

    private Droppable getGemToDelete(Droppable falshingGem)
    {
        //TODO: REFACTOR THIS
        
        Region region = falshingGem.getRegion();
        Cell cell = new Cell(region.getTopRow(), region.getLeftColumn());

        Droppable gemToDelete = searchGemToDelete(cell);
        
        if(gemToDelete == null)
        {
            gemToDelete = searchLeft(cell);

            if(gemToDelete == null)
            {
                gemToDelete = searchRight(cell);

                if(gemToDelete == null)
                {
                    gemToDelete = searchUp(cell);
                }
            }
        }
        return gemToDelete;
    }


    private Droppable searchGemToDelete(Cell cell)
    {
        if((cell.getRow() < getGrid().getNumberOfRows() - 1))
        {
            return getGem(cell.getLower());
        }
        return null;
    }


    private Droppable searchLeft(Cell cell)
    {
        if(cell.getColumn() >= 1)
        {
            return getGem(cell.getLeft());
        }
        return null;
    }


    private Droppable searchRight(Cell cell)
    {
        if(cell.getColumn() < getGrid().getNumberOfColumns() - 1)
        {
            return getGem(cell.getRight());
        }
        return null;
    }


    private Droppable searchUp(Cell cell)
    {
        if(cell.getRow() > 1)
        {
            return getGem(cell.getUpper());
        }
        return null;
    }

Dopo:

    private Droppable getGemToDelete(Droppable falshingGem)
    {        
        Region region = falshingGem.getRegion();
        Cell cell = new Cell(region.getTopRow(), region.getLeftColumn());
        
        Direction directions[] = {Direction.GO_DOWN, Direction.GO_LEFT, Direction.GO_RIGHT, Direction.GO_UP};

        for (Direction direction : directions)
        {
            Droppable gemToDelete = searchGemToDelete(cell, direction);
            
            if (gemToDelete != null)
            {
                return gemToDelete;
            }
        }
        
        return null;
    }


    private Droppable searchGemToDelete(Cell cell, Direction direction)
    {
        final int rowToSearch = cell.getRow() + direction.deltaY();
        final int columnToSearch = cell.getColumn() + direction.deltaX();
        
        final boolean isValidCell = getGrid().isValidCell(rowToSearch, columnToSearch);
        if (!isValidCell)
        {
            return null;
        }
        
        return getGem(new Cell(rowToSearch, columnToSearch));
    }