public int MaxValue(Board i_Board, int i_Alpha, int i_Beta, int i_Depth, Square.eSquareColor i_PrevColor)
{
LinkedList <Square> possibleMoves = listOfPossibleMoves(i_Board, i_PrevColor);
int value;
Board board;
if (cutOffTest(i_Board, i_Depth, possibleMoves))
{
value = evalBoard(i_Board, possibleMoves.Count);
}
else
{
value = int.MinValue + 1;
Square.eSquareColor color = (i_PrevColor == Square.eSquareColor.Black) ? Square.eSquareColor.White : Square.eSquareColor.Black;
foreach (Square square in possibleMoves)
{
board = createNewBoard((Board)i_Board.Clone(), square, i_PrevColor);
value = max(value, MinValue(board, i_Alpha, i_Beta, i_Depth + 1, color));
if (value >= i_Beta)
{
break;
}
i_Alpha = max(i_Alpha, value);
}
}
return(value);
}
public int MinValue(Board i_Board, int i_Alpha, int i_Beta, int i_Depth, Square.eSquareColor i_PrevColor)
{
LinkedList <Square> possibleMoves = listOfPossibleMoves(i_Board, i_PrevColor);
int value;
if (cutOffTest(i_Board, i_Depth, possibleMoves))
{
value = evalBoard(i_Board, possibleMoves.Count);
}
else
{
value = int.MaxValue;
Square.eSquareColor color = (i_PrevColor == Square.eSquareColor.Black) ? Square.eSquareColor.White : Square.eSquareColor.Black;
foreach (Square square in possibleMoves)
{
value = min(value, MaxValue(createNewBoard(i_Board, square, i_PrevColor), i_Alpha, i_Beta, i_Depth + 1, color));
if (value <= i_Alpha)
{
break;
}
i_Beta = min(i_Beta, value);
}
}
return(value);
}
private Image getImageByColor(Square.eSquareColor i_PlayerColor, bool i_TransparencyImage)
{
Image image = null;
if (i_TransparencyImage)
{
image = Properties.Resources.possibleMoveSquare;
}
else
{
switch (i_PlayerColor)
{
case Square.eSquareColor.White:
image = Properties.Resources.whitePlayer;
break;
case Square.eSquareColor.Black:
image = Properties.Resources.blackPlayer;
break;
case Square.eSquareColor.Empty:
image = Properties.Resources.emptySquare;
break;
}
}
return(image);
}
private Board createNewBoard(Board i_CurrentBoard, Square i_PossibleMove, Square.eSquareColor i_Color)
{
bool isValid;
CheckIfSquareIsValidAndMakeMove(i_PossibleMove, sr_MakeMove, i_CurrentBoard, out isValid);
return(i_CurrentBoard);
}
public Board AlphaBetaPruning(Board i_CurrentBoard)
{
int alpha = int.MinValue + 1, beta = int.MaxValue, value;
LinkedList <Square> possibleMoves = new LinkedList <Square>();
possibleMoves = listOfPossibleMoves(i_CurrentBoard, m_PlayerColor);
Square.eSquareColor color = (m_PlayerColor == Square.eSquareColor.Black) ? Square.eSquareColor.White : Square.eSquareColor.Black;
foreach (Square square in possibleMoves)
{
value = MinValue(createNewBoard((Board)i_CurrentBoard.Clone(), square, m_PlayerColor), alpha, beta, 1, color);
if (value > alpha)
{
m_FinalBoard = createNewBoard((Board)i_CurrentBoard.Clone(), square, m_PlayerColor);
alpha = value;
}
}
return(m_FinalBoard);
}
private LinkedList <Square> listOfPossibleMoves(Board i_GameBoard, Square.eSquareColor i_CurrentMoveColor)
{
return(new Player("temp", i_CurrentMoveColor).ListOfPossibleMoves(i_GameBoard));
}
private int getCurrentValueByColor(Square.eSquareColor i_Color, int i_Value)
{
return((i_Color == m_PlayerColor) ? i_Value : -1 * i_Value);
}
public AiPlayer(string i_NameOfUser, Square.eSquareColor i_PlayerColor)
: base(i_NameOfUser, i_PlayerColor)
{
}
public Player(string i_NameOfUser, Square.eSquareColor i_PlayerColor)
{
m_NameOfUser = i_NameOfUser;
m_PlayerColor = i_PlayerColor;
}
