private void fillBoard(int row, int column, ref List <int>[,] triedNumbers)
{
List <int> possibleValuesInCell;
do
{
if (Backtracking > 40000)//max times to run fillboard, jumps out of method
{
return;
}
_board.ClearNumber(row, column);
possibleValuesInCell = new List <int>().GenerateAllPossibleValues(_board.GetBoardSize()); // list numbers depending on boardsize ((1-4),(1-6),(1-9),(1-12),(1-16))
RemoveInvalidValuesFromCell(ref possibleValuesInCell, row, column); // remove invalid numbers for the cell
foreach (int triedNumber in triedNumbers[row, column]) //remove tried numbers in cell from possibleValuesInCell
{
possibleValuesInCell.Remove(triedNumber);
}
if (possibleValuesInCell.Count == 0)
{
triedNumbers[row, column].Clear();
int prevRow;
int prevColumn;
if (column == 0)
{
prevRow = row - 1;
prevColumn = _board.GetBoardSize() - 1;
}
else
{
prevRow = row;
prevColumn = column - 1;
}
fillBoard(prevRow, prevColumn, ref triedNumbers);
}
else
{
int randomIndex = RandomNumberGen(0, possibleValuesInCell.Count); // Choose random index
int randomNumber = possibleValuesInCell.ElementAt <int>(randomIndex); // Get number in index
_board.SetNumber(row, column, randomNumber, false);
triedNumbers[row, column].Add(randomNumber);
}
Backtracking = Backtracking + 1;
} while (possibleValuesInCell.Count == 0);
}
public void ClearNumber(int row, int column)
{
if (_board != null)
{
_board.ClearNumber(row, column);
}
else
{
throw new GameNotStartedException();
}
}
