public bool MakeMove(TicTacToeMove move, TicTacToeBoardValue boardValue)
{
bool isValid = this.IsValidMove(move);
if (isValid)
{
this.values[move.X, move.Y] = boardValue;
}
return(isValid);
}
private TicTacToeMove CheckForWin(TicTacToeGameState gameState, TicTacToeBoardValue boardValue)
{
IEnumerable <TicTacToeMove> openMoves = gameState.Board.GetOpenMoves();
foreach (TicTacToeMove move in openMoves)
{
gameState.Board.MakeMove(move, boardValue);
TicTacToeBoardValue?winner = gameState.Board.CheckForWinner();
if (winner == boardValue)
{
return(move);
}
gameState.Board.ResetPosition(move.X, move.Y);
}
return(null);
}
public override TicTacToeMove NextMove(TicTacToeGameState gameState)
{
// Can I win?
TicTacToeMove winningMove = this.CheckForWin(gameState, this.BoardValue);
// Can they win?
TicTacToeBoardValue otherBoardValue = this.BoardValue == TicTacToeBoardValue.O ?
TicTacToeBoardValue.X : TicTacToeBoardValue.O;
TicTacToeMove blockingMove = this.CheckForWin(gameState, otherBoardValue);
// Can I play a corner?
TicTacToeMove cornerMove = new TicTacToeMove[]
{
new TicTacToeMove(0, 0),
new TicTacToeMove(0, 2),
new TicTacToeMove(2, 0),
new TicTacToeMove(2, 2)
}.OrderBy(move => Guid.NewGuid()).FirstOrDefault(move => gameState.Board.IsValidMove(move));
// play best move
return(winningMove ?? blockingMove ?? cornerMove ?? base.NextMove(gameState));
}
public TicTacToeRandomPlayer(TicTacToeBoardValue boardValue)
: base(boardValue)
{
}
public TicTacToePlayer(TicTacToeBoardValue boardValue)
{
this.BoardValue = boardValue;
}
public TicTacToeStrategyPlayer(TicTacToeBoardValue boardValue)
: base(boardValue)
{
}
public TicTacToeHumanPlayer(TicTacToeBoardValue boardValue)
: base(boardValue)
{
}
