private int MaxMove(Board board)
{
var winner = board.GetWinner();
if (winner != 0 || board.IsFilled())
{
if (winner == 0)
return 0;
if (winner == Value)
return Board.SIZE;
return -Board.SIZE;
}
var moves = board.GetPossibleMoves();
// Look for best move
int bestMove = -(Board.SIZE + 1);
foreach (Move move in moves)
{
var newBoard = board.Copy();
newBoard.AddMove(move, Value);
var grade = MinMove(newBoard);
grade = decreaseOneStep(grade);
if (grade > bestMove)
bestMove = grade;
}
return bestMove;
}
private int MinMove(Board board)
{
var winner = board.GetWinner();
if (winner != 0 || board.IsFilled())
{
if (winner == 0)
return 0;
if (winner == Value)
return Board.SIZE;
return -Board.SIZE;
}
var enemyValue = (this.Value == 1) ? 2 : 1;
var moves = board.GetPossibleMoves();
int worstMove = Board.SIZE + 1;
foreach (Move move in moves)
{
var newBoard = board.Copy();
newBoard.AddMove(move, enemyValue);
var grade = MaxMove(newBoard);
grade = decreaseOneStep(grade);
if (grade < worstMove)
worstMove = grade;
}
return worstMove;
}
