private void ClearEmptyCells(GraphicsBalloon[,] board)
{
int row;
int col;
Queue<GraphicsBalloon> baloonsToPop = new Queue<GraphicsBalloon>();
for (col = 7; col >= 0; col--)
{
for (row = 7; row >= 0; row--)
{
if (!board[row, col].IsPopped)
{
baloonsToPop.Enqueue(board[row, col]);
board[row, col].Pop();
}
}
row = 7;
while (baloonsToPop.Count > 0)
{
board[row, col] = baloonsToPop.Dequeue();
board[row, col].Unpop();
Grid.SetRow(board[row, col], row);
Grid.SetColumn(board[row, col], col);
row--;
}
baloonsToPop.Clear();
}
}
public void Pop(int row, int col, GraphicsBalloon[,] board)
{
if (board == null)
{
throw new ArgumentNullException("board");
}
PopBalloons(row, col, board, board[row, col].Value, 8);
ClearEmptyCells(board);
}
protected override void PopBalloons(int row, int col, GraphicsBalloon[,] board, int cellValue, int boardSize)
{
if ((row >= 0 && row < boardSize && col >= 0 && col < boardSize) &&
board[row, col].Value == cellValue && !board[row, col].IsPopped)
{
board[row, col].Pop();
PopBalloons(row - 1, col, board, cellValue, boardSize); // Up
PopBalloons(row + 1, col, board, cellValue, boardSize); // Down
PopBalloons(row, col + 1, board, cellValue, boardSize); // Left
PopBalloons(row, col - 1, board, cellValue, boardSize); // Right
}
}
protected override void PopBalloons(int row, int col, GraphicsBalloon[,] board, int cellValue, int boardSize)
{
int upperRow = row;
int lowerRow = row;
int leftCol = col;
int rightCol = col;
if (row > 0) upperRow--;
if (row < boardSize - 1) lowerRow++;
if (col > 0) leftCol--;
if (col < boardSize - 1) rightCol++;
for (int currentRow = upperRow; currentRow <= lowerRow; currentRow++)
{
for (int currentCol = leftCol; currentCol <= rightCol; currentCol++)
{
board[currentRow, currentCol].Pop();
}
}
}
protected abstract void PopBalloons(int row, int col, GraphicsBalloon[,] board, int cellValue, int boardSize);
