public override bool PlayBestMove(Game game)
{
if (game.Finished())
{
return(false);
}
Square[] emptySquares = game.EmptySquares();
int length = emptySquares.Length;
if (length == 0) // no empty squares left; should not occur, but test anyway
{
return(false);
}
Random random = new Random();
while (true)
{
int value = random.Next() % length;
Square square = emptySquares[value];
game.Play(square);
return(true);
}
;
}
public override bool PlayBestMove(Game game)
{
// strategy 0: no possible moves
if (game.Finished())
{
return(false);
}
// strategy 1: play a winning move
// find a line that is winning for the player
// optimization:
// only needed when you have played 2 times (and the opponent 1 or 2 times)
// so only if there are 6 or less empty Squares, you need to check for this.
if (TryPlayThreeInARowFor(Game.PlayerToContent(game.CurrentPlayer), game))
{
return(true);
}
// strategy 2: play a blocking move
// find a line that is winning for the opponent
if (TryPlayThreeInARowFor(Game.PlayerToContent(game.CurrentOpponent), game))
{
return(true);
}
// strategy 3: try to move on a priority square
// we base the priority on the number of lines that each square contains
Square[] emptySquares = game.EmptySquares();
int length = emptySquares.Length;
if (length == 0) // no empty squares left; should not occur, but test anyway
{
return(false);
}
Square prioritySquare = emptySquares[0];
int linesForPrioritySquareLength = Board.LinesForSquare(prioritySquare).Length;
foreach (Square square in emptySquares)
{
int linesForSquareLength = Board.LinesForSquare(square).Length;
if (linesForSquareLength > linesForPrioritySquareLength)
{
prioritySquare = square;
linesForPrioritySquareLength = linesForSquareLength;
}
}
game.Play(prioritySquare);
return(true);
// strategy 4: random move
// not needed any more because we can always find a priority square
//TicTacToePlayer randomPlayer = new RandomTicTacToePlayer();
//randomPlayer.PlayBestMove(game);
}
public override bool PlayBestMove(Game game)
{
// strategy 0: no possible moves
if (game.Finished())
return false;
// strategy 1: play a winning move
// find a line that is winning for the player
// optimization:
// only needed when you have played 2 times (and the opponent 1 or 2 times)
// so only if there are 6 or less empty Squares, you need to check for this.
if (TryPlayThreeInARowFor(Game.PlayerToContent(game.CurrentPlayer), game))
{
return true;
}
// strategy 2: play a blocking move
// find a line that is winning for the opponent
if (TryPlayThreeInARowFor(Game.PlayerToContent(game.CurrentOpponent), game))
{
return true;
}
// strategy 3: try to move on a priority square
// we base the priority on the number of lines that each square contains
Square[] emptySquares = game.EmptySquares();
int length = emptySquares.Length;
if (length == 0) // no empty squares left; should not occur, but test anyway
return false;
Square prioritySquare = emptySquares[0];
int linesForPrioritySquareLength = Board.LinesForSquare(prioritySquare).Length;
foreach (Square square in emptySquares)
{
int linesForSquareLength = Board.LinesForSquare(square).Length;
if (linesForSquareLength > linesForPrioritySquareLength)
{
prioritySquare = square;
linesForPrioritySquareLength = linesForSquareLength;
}
}
game.Play(prioritySquare);
return true;
// strategy 4: random move
// not needed any more because we can always find a priority square
//TicTacToePlayer randomPlayer = new RandomTicTacToePlayer();
//randomPlayer.PlayBestMove(game);
}
private void computerPlay()
{
if (!game.Finished())
{
bool computerIsPlayingForAnyPlayer =
isComputerPlaying(Player.Cross, ComputerPlayerXOnOff) // computer plays X
||
isComputerPlaying(Player.Nought, ComputerPlayerOOnOff); // computer plays O
if (computerIsPlayingForAnyPlayer)
{
BasePlayer player = CreatePlayer();
player.PlayBestMove(game);
gameToView();
showWinner(game.Winner());
}
;
}
}
public override bool PlayBestMove(Game game)
{
if (game.Finished())
return false;
Square[] emptySquares = game.EmptySquares();
int length = emptySquares.Length;
if (length == 0) // no empty squares left; should not occur, but test anyway
return false;
Random random = new Random();
while (true)
{
int value = random.Next() % length;
Square square = emptySquares[value];
game.Play(square);
return true;
};
}
