public static bool DoesGameHaveWinner(TicTacToeState state)
{
var board = state.board;
var winningLines = new List<List<MovePosition>>
{
new List<MovePosition> { MovePosition.TopLeft, MovePosition.TopCenter, MovePosition.TopRight },
new List<MovePosition> { MovePosition.MiddleLeft, MovePosition.MiddleCenter, MovePosition.MiddleRight },
new List<MovePosition> { MovePosition.BottomLeft, MovePosition.BottomCenter, MovePosition.BottomRight },
new List<MovePosition> { MovePosition.TopLeft, MovePosition.MiddleLeft, MovePosition.BottomLeft },
new List<MovePosition> { MovePosition.TopCenter, MovePosition.MiddleCenter, MovePosition.BottomCenter },
new List<MovePosition> { MovePosition.TopRight, MovePosition.MiddleRight, MovePosition.BottomRight },
new List<MovePosition> { MovePosition.TopLeft, MovePosition.MiddleCenter, MovePosition.BottomRight },
new List<MovePosition> { MovePosition.BottomLeft, MovePosition.MiddleCenter, MovePosition.TopRight },
};
bool hasWinner = winningLines.Any( x => IsLineAllEqual(board, x[0], x[1], x[2]));
return hasWinner;
}
public void IsBoardFull_IsTrue()
{
var state = new TicTacToeState
{
board = new List<PlayerMark>
{
PlayerMark.X, PlayerMark.O, PlayerMark.X,
PlayerMark.X, PlayerMark.O, PlayerMark.X,
PlayerMark.O, PlayerMark.X, PlayerMark.O,
}
};
var isFull = TicTacToeLogic.IsBoardFull(state);
Assert.True(isFull);
}
public void IsBoardFull_IsFalse()
{
var state = new TicTacToeState
{
board = new List<PlayerMark>
{
PlayerMark.Empty, PlayerMark.Empty, PlayerMark.Empty,
PlayerMark.Empty, PlayerMark.Empty, PlayerMark.Empty,
PlayerMark.Empty, PlayerMark.Empty, PlayerMark.Empty,
}
};
var isFull = TicTacToeLogic.IsBoardFull(state);
Assert.False(isFull);
}
public void DoesGameHaveWinner_IsTrue()
{
var state = new TicTacToeState
{
firstPlayer = Guid.Empty,
secondPlayer = Guid.Empty,
board = new List<PlayerMark>
{
PlayerMark.Empty, PlayerMark.Empty, PlayerMark.Empty,
PlayerMark.X, PlayerMark.X, PlayerMark.X,
PlayerMark.Empty, PlayerMark.Empty, PlayerMark.Empty,
}
};
var hasWinner = TicTacToeLogic.IsGameOver(state);
Assert.True(hasWinner);
}
public static bool IsGameTie(TicTacToeState state)
{
var isTie = IsBoardFull(state) && !DoesGameHaveWinner(state);
return isTie;
}
public static bool IsGameOver(TicTacToeState state)
{
bool gameOver = DoesGameHaveWinner(state) || IsBoardFull(state);
return gameOver;
}
public static bool IsBoardFull(TicTacToeState state)
{
var isFull = state.board.All(x => x != PlayerMark.Empty);
return isFull;
}