/// <summary>
///
/// </summary>
/// <returns></returns>
private SudokuHelper CreateCopy()
{
SudokuHelper copy = new SudokuHelper();
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
copy.s[i, j] = s[i, j];
}
}
return(copy);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public int ComputeErrors()
{
SudokuHelper S2 = this.CreateCopy();
int errors_count = 0;
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
if (f[j, i] == 0)
{
S2.s[j, i] = 0;
}
}
}
S2.SolvePuzzle(SolveMethods.All);
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
if (S2.s[j, i] == s[j, i] || s[j, i] == 0)
{
e[j, i] = 0;
}
else
{
e[j, i] = 1;
errors_count++;
}
}
}
return(errors_count);
}
/// <summary>
/// 创建一个数独游戏
/// </summary>
/// <param name="level">游戏等级(0-简单,1-一般,2-难)</param>
public void GenerateGame(int level = 0)
{
if (PlaySound != null)
{
PlaySound(SudokuSound.Stop);
}
UseTemplate(level);
int trials_counter = 0;
int trials_max = 100;
SolveMethods M = SolveMethods.All;
List <Point> lstPoint = new List <Point>();
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
if (s[j, i] > 0)
{
lstPoint.Add(new Point(i, j));
}
}
}
for (int n = 0; n < 55;)
{
int index = R.Next(lstPoint.Count);
int x = lstPoint[index].X;
int y = lstPoint[index].Y;
int temp = s[x, y];
if (temp != 0)
{
s[x, y] = 0;
SudokuHelper S2 = CreateCopy();
int solutionStepsCount = S2.ComputePossibleSteps(M).Count();
bool range0Ok = ((n > 35) && (solutionStepsCount > 25));
bool range1Ok = ((n > 15) && (solutionStepsCount > 25));
bool range2Ok = n < 16;
bool solutionStepsCountOk = range0Ok || range1Ok || range2Ok;
if (solutionStepsCountOk)
{
bool isSolvable = S2.SolvePuzzle(M);
if (isSolvable)
{
lstPoint.RemoveAt(index);
n++;
trials_counter = 0;
}
else
{
s[x, y] = temp;
}
}
else
{
s[x, y] = temp;
}
trials_counter++;
}
if (trials_counter > trials_max)
{
break;
}
}
ScrambleGame();
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
if (s[i, j] == 0)
{
f[i, j] = 0;
}
else
{
f[i, j] = 1;
}
}
}
EnumeratePossibilities();
starttime = DateTime.Now;
DisplayMessage = false;
if (PlaySound != null)
{
PlaySound(SudokuSound.NewPuzzle);
}
if (RequestRepaint != null)
{
RequestRepaint();
}
}
/// <summary>
///
/// </summary>
/// <param name="M"></param>
/// <returns></returns>
public bool checkSolvable(SolveMethods M)
{
SudokuHelper copy = CreateCopy();
return(copy.SolvePuzzle(M));
}