private int Minimax(List <string> board, int depth, bool isMaximizing)
{
var result = _judge.CheckWinner(board);
if (result != "")
{
return(_scores[result]);
}
if (isMaximizing)
{
var bestScore = int.MinValue;
for (var i = 0; i < 9; i++)
{
if (board[i] != "")
{
continue;
}
board[i] = Form1.BotSymbol;
var score = Minimax(board, depth + 1, false);
board[i] = "";
bestScore = Math.Max(bestScore, score);
}
return(bestScore);
}
else
{
var bestScore = int.MaxValue;
for (var i = 0; i < 9; i++)
{
if (board[i] != "")
{
continue;
}
board[i] = Form1.PlayerSymbol;
var score = Minimax(board, depth + 1, true);
board[i] = "";
bestScore = Math.Min(bestScore, score);
}
return(bestScore);
}
}
private void CheckGameEnd()
{
label.Text = _judge.CheckWinner(_board);
if (label.Text == "")
{
return;
}
if (label.Text != Tie)
{
label.Text = string.Format(Win, label.Text);
}
foreach (Control control in Controls)
{
control.Enabled = !(control is Button);
}
}