void deleteAllMatchesOfType(int crystalType)
{
    vector<gridCoordinate> crystalCoordinatesToClear;

    for (int row = 0; row < gridSize; row++)
    {

        for (int column = 0; column < gridSize; column++)
        {

            bool excludeHorizontalCheck = false, excludeVerticalCheck = false;

            if (row == 0 || row == (gridSize - 1)) // If it is the top or bottom row do not check above or bellow.
                excludeVerticalCheck = true;

            if (column == 0 || column == (gridSize - 1)) // If it is the left or right edge do not check horizontally for matches.
                excludeHorizontalCheck = true;

            if (grid[row][column] = crystalType) // Check for only this type of crystal.
            {
                if (excludeVerticalCheck == false)
                {

                    if (grid[row][column] == grid[row - 1][column] && grid[row][column] == grid[row + 1][column]) // If above and bellow crystal have same value as crystal consider this a match.
                    {
                        gridCoordinate top, mid, bot;

                        top.row = row - 1;
                        top.column = column;


                        mid.row = row;
                        mid.column = column;


                        bot.row = row + 1;
                        bot.column = column;


                        crystalCoordinatesToClear.push_back(top);
                        crystalCoordinatesToClear.push_back(mid);
                        crystalCoordinatesToClear.push_back(bot);

                    }

                }

                if (excludeHorizontalCheck == false)
                {

                    if (grid[row][column] == grid[row][column - 1] && grid[row][column] == grid[row][column + 1]) // If left and right crystal have same value as crystal consider this a match.
                    {

                        gridCoordinate left, mid, right;

                        left.row = row;
                        left.column = column - 1;


                        mid.row = row;
                        mid.column = column;


                        right.row = row;
                        right.column = column + 1;


                        crystalCoordinatesToClear.push_back(left);
                        crystalCoordinatesToClear.push_back(mid);
                        crystalCoordinatesToClear.push_back(right);

                    }

                }
            }
        }

    }