public void CheckForDraw()
{
if (Moves.Count() >= 9 && GameStatus == Status.InProgress)
{
GameStatus = Status.Draw;
ColorDraw();
}
}
/// <summary>
/// Return 0 if cat game. 1 if player. -1 if computer. Null if no winner.
/// </summary>
/// <returns></returns>
public int?Winner()
{
// Rows
foreach (var row in this)
{
if (row.Sum(f => f) == 3)
{
return(1);
}
if (row.Sum(f => f) == -3)
{
return(-1);
}
}
// Columns
for (int col = 0; col < 3; col++)
{
if (this[0][col] + this[1][col] + this[2][col] == 3)
{
return(1);
}
if (this[0][col] + this[1][col] + this[2][col] == -3)
{
return(-1);
}
}
// Diagonal 1
if (this[0][0] + this[1][1] + this[2][2] == 3)
{
return(1);
}
if (this[0][0] + this[1][1] + this[2][2] == -3)
{
return(-1);
}
// Diagonal 2
if (this[0][2] + this[1][1] + this[2][0] == 3)
{
return(1);
}
if (this[0][2] + this[1][1] + this[2][0] == -3)
{
return(-1);
}
// Cat game
if (Moves.Count() == 9)
{
return(0);
}
// No winner.
return(null);
}