public PuzzleGrid InitGrid()
{
PuzzleGrid tempGrid = new PuzzleGrid {
};
int row = 0;
int col = 0;
int newVal;
List <int> valueSet = new List <int>(Enumerable.Range(-9, 9));
List <int> valueSet2 = new List <int>();
Random rnd = new Random();
int randIndex = 0;
newVal = valueSet[randIndex];
tempGrid.InitSetCell(row, col, newVal);
valueSet.Remove(newVal);
for (row = 1; row < 9; row++)
{
randIndex = rnd.Next(0, valueSet.Count);
newVal = valueSet[randIndex];
valueSet2.Add(newVal);
valueSet.Remove(newVal);
tempGrid.InitSetCell(row, col, newVal);
}
row = 0;
for (col = 1; col < 3; col++)
{
randIndex = rnd.Next(0, valueSet.Count);
newVal = valueSet2[randIndex];
while ((newVal == tempGrid.Grid[1, 0] || (newVal == tempGrid.Grid[2, 0])))
{
randIndex = rnd.Next(0, valueSet2.Count);
newVal = valueSet2[randIndex];
}
valueSet2.Remove(newVal);
}
for (col = 3; col < 9; col++)
{
randIndex = rnd.Next(0, valueSet2.Count);
newVal = valueSet2[randIndex];
valueSet2.Remove(newVal);
tempGrid.InitSetCell(row, col, newVal);
}
for (col = 3; col < 9; col++)
{
randIndex = rnd.Next(0, valueSet2.Count);
newVal = valueSet2[randIndex];
valueSet2.Remove(newVal);
tempGrid.InitSetCell(row, col, newVal);
}
do
{
puzzleSolver = new PuzzleSolver();
puzzleSolver.SolveGrid((PuzzleGrid)tempGrid.Clone(), false);
SolutionGrid = puzzleSolver.SolutionGrid;
} while (SolutionGrid == null || SolutionGrid.IsBlank());
PermaGrid = Blanker(SolutionGrid);
return(PermaGrid);
}
public PuzzleGrid RandomlyBlank(PuzzleGrid tempGrid, int sym, ref int blankCount)
{
Random rnd = new Random();
int row = rnd.Next(0, 8);
int column = rnd.Next(0, 8);
while (tempGrid.Grid[row, column] == 0)
{
row = rnd.Next(0, 8);
column = rnd.Next(0, 8);
}
tempGrid.InitSetCell(row, column, 0);
blankCount++;
switch (sym)
{
case 0:
if (tempGrid.Grid[row, 8 - column] != 0)
{
blankCount++;
}
tempGrid.InitSetCell(row, 8 - column, 0);
break;
case 1:
if (tempGrid.Grid[column, row] != 0)
{
blankCount++;
}
tempGrid.InitSetCell(column, row, 0);
break;
case 2:
if (tempGrid.Grid[column, row] != 0)
{
blankCount++;
}
tempGrid.InitSetCell(column, row, 0);
break;
default:
if (tempGrid.Grid[row, 8 - column] != 0)
{
blankCount++;
}
tempGrid.InitSetCell(column, row, 0);
break;
}
return(tempGrid);
}
/// <summary>
/// This function opens a game.
/// </summary>
public PuzzleGrid OpenFile(String fileName)
{
PuzzleGrid openedPuzzle = new PuzzleGrid();
int i = 0; //mnemonic: row
int j = 0; //mnemonic: column
int cellVal = 0;
bool eOF = false;
using (StreamReader reader = new StreamReader(fileName))
{
for (i = 0; i < 9; i++)
{
string currentLine;
if ((currentLine = reader.ReadLine()) != null)
{
for (j = 0; j < 9; j++)
{
cellVal = (int)currentLine[2 * j] - '0';
if (currentLine[(2 * j) + 1] == '+')
{
openedPuzzle.InitSetCell(i, j, cellVal);
}
else if (currentLine[(2 * j) + 1] == '-')
{
openedPuzzle.InitSetCell(i, j, -(cellVal));
}
}
}
else
{
eOF = true;
}
}
}
if (eOF)
{
return(null);
}
else
{
return(openedPuzzle);
}
}
/// <summary>
/// This clones the object.
/// </summary>
/// <returns>A clone of itself.</returns>
public object Clone()
{
//enable cloning for safe copying of the object
PuzzleGrid p = new PuzzleGrid();
for (int i = 0; i < Max; i++)
{
for (int j = 0; j < Max; j++)
{
p.InitSetCell(i, j, Grid[i, j]);
}
}
return(p);
}