// Searches for a new best move
public override Move getInput(Board B)
{
MinMax minMaxSearch = new MinMax();
Move bestMove;
put(0);
bestMove = minMaxSearch.runMinMax(B, colour, getSearchDepth(B), true, MinMax.MINIMUM, MinMax.MAXIMUM, put).Item1;
if (bestMove != null)
{
if (bestMove.Equals(secondToLastMove))
{
repetitionMod += 1;
}
else
{
repetitionMod = 0;
}
secondToLastMove = lastMove;
lastMove = bestMove;
return bestMove;
}
else
{
repetitionMod += 1;
return new Move();
}
}
// --- Graphics interface ---
// Functions for printing the text and image versions of the board.
// Update the board and render the GUI. Also reset the selected move.
public void updateBoard(src.Board board)
{
this.board = board;
drawControl.setBoard(board);
selectedMove = new src.Move();
renderGUI();
}
// Returns and resets the last move selected via click input.
public src.Move readSelectedMove()
{
src.Move tmp = selectedMove.Copy();
// If correct move, reset selection
if (!selectedMove.Illegal)
{
selectedMove = new src.Move();
}
return(tmp);
}
//Checks if move is possible
public static bool movePossible(Board board, Piece piece, Move move)
{
List<Tuple<uint, uint>> tmp;
tmp = getPossibleMoves(board, piece);
foreach (Tuple<uint, uint> item in tmp)
{
if ((item.Item1 == move.ToX) &&
(item.Item2 == move.ToY))
{
return true;
}
}
return false;
}
// Check if a move is possible on a specific board.
public static bool movePossible(Board board, Move move, string activePlayer)
{
// Check if piece at move.from
Piece p = board.getPieceAt(move.FromX, move.FromY);
if (p == null)
{
return false;
}
// Check if correct colour
if (p.getColour() != activePlayer)
{
return false;
}
// Check if move is possible
if (p is Pawn)
{
return PawnRules.movePossible(board, p, move);
}
else if (p is Rook)
{
return RookRules.movePossible(board, p, move);
}
else if (p is Knight)
{
return KnightRules.movePossible(board, p, move);
}
else if (p is Bishop)
{
return BishopRules.movePossible(board, p, move);
}
else if (p is Queen)
{
return QueenRules.movePossible(board, p, move);
}
else if (p is King)
{
return KingRules.movePossible(board, p, move);
}
// Should not get here ever...
return false;
}
// Called when the custom Drawing Control is clicked.
// Will calculate the square clicked and save this move for Graphics Agents to use in the future.
private void onDrawingClick(object sender, MouseEventArgs e)
{
if (!selectedMove.Illegal)
{
// A move has already been selected.
// Wait for a Graphics Agent to read the selected move before accepting new clicks in the window.
return;
}
// Calculate the square coordinates of the click.
// TODO: use Board size.
int newClickX = e.X / (drawControl.Width / 9) - 1;
int newClickY = 7 - (e.Y / (drawControl.Height / 9) - 1);
// Clicked outside of the board
if (newClickX == -1 || newClickY == 8)
{
return;
}
if (newClickX == selectedMove.FromX && newClickY == selectedMove.FromY)
{
selectedMove = new src.Move();
}
else
{
// New square clicked
List <Tuple <uint, uint> > moves;
if (selectedMove.hasFrom())
{
moves = ChessForms.rules.Rules.getPossibleMoves(board, board.getPieceAt(selectedMove.FromX, selectedMove.FromY));
//moves = board.getSquareAt((uint)selectedSquareX, (uint)selectedSquareY).getPiece().getPossibleMoves(board.getSquareAt, turn);
}
else
{
moves = new List <Tuple <uint, uint> >();
}
// Check if part of possible moves.
if (moves.Contains(new Tuple <uint, uint>((uint)newClickX, (uint)newClickY)))
{
// Move selected
selectedMove.ToX = (uint)newClickX;
selectedMove.ToY = (uint)newClickY;
selectedMove.Illegal = false;
}
else
{
// Move not selected, check if new piece clicked
src.Piece p = board.getPieceAt((uint)newClickX, (uint)newClickY);
if (p != null)
{
selectedMove.FromX = (uint)newClickX;
selectedMove.FromY = (uint)newClickY;
}
else
{
selectedMove = new src.Move();
}
}
}
renderGraphicsGUI();
}
// Called when the custom Drawing Control is clicked.
// Will calculate the square clicked and save this move for Graphics Agents to use in the future.
private void onDrawingClick(object sender, MouseEventArgs e)
{
if (!selectedMove.Illegal)
{
// A move has already been selected.
// Wait for a Graphics Agent to read the selected move before accepting new clicks in the window.
return;
}
// Calculate the square coordinates of the click.
// TODO: use Board size.
int newClickX = e.X / (drawControl.Width / 9) - 1;
int newClickY = 7 - (e.Y / (drawControl.Height / 9) - 1);
// Clicked outside of the board
if (newClickX == -1 || newClickY == 8)
{
return;
}
if (newClickX == selectedMove.FromX && newClickY == selectedMove.FromY)
{
selectedMove = new src.Move();
}
else
{
// New square clicked
List<Tuple<uint, uint>> moves;
if (selectedMove.hasFrom())
{
moves = ChessForms.rules.Rules.getPossibleMoves(board, board.getPieceAt(selectedMove.FromX, selectedMove.FromY));
//moves = board.getSquareAt((uint)selectedSquareX, (uint)selectedSquareY).getPiece().getPossibleMoves(board.getSquareAt, turn);
}
else
{
moves = new List<Tuple<uint, uint>>();
}
// Check if part of possible moves.
if (moves.Contains(new Tuple<uint, uint>((uint)newClickX, (uint)newClickY)))
{
// Move selected
selectedMove.ToX = (uint) newClickX;
selectedMove.ToY = (uint) newClickY;
selectedMove.Illegal = false;
}
else
{
// Move not selected, check if new piece clicked
src.Piece p = board.getPieceAt((uint)newClickX, (uint)newClickY);
if (p != null)
{
selectedMove.FromX = (uint) newClickX;
selectedMove.FromY = (uint) newClickY;
}
else
{
selectedMove = new src.Move();
}
}
}
renderGraphicsGUI();
}
// --- Graphics interface ---
// Functions for printing the text and image versions of the board.
// Update the board and render the GUI. Also reset the selected move.
public void updateBoard(src.Board board)
{
this.board = board;
drawControl.setBoard(board);
selectedMove = new src.Move();
renderGUI();
}
// Returns and resets the last move selected via click input.
public src.Move readSelectedMove()
{
src.Move tmp = selectedMove.Copy();
// If correct move, reset selection
if (!selectedMove.Illegal)
{
selectedMove = new src.Move();
}
return tmp;
}
public bool makeMove(string col, Move move)
{
uint x1 = move.FromX;
uint y1 = move.FromY;
uint x2 = move.ToX;
uint y2 = move.ToY;
Piece p = getPieceAt(x1, y1);
Square s1 = getSquareAt(x1, y1);
Square s2 = getSquareAt(x2, y2);
bool castling = false;
bool enPassant = false;
// Check if squares are ok.
if (s1 == null || s2 == null)
{
return false;
}
// Check if piece is ok.
if (p == null)
{
return false;
}
if (p.getColour() != col)
{
return false;
}
// Move is legal
//Check if this is a castling
if ((p is King) && (((x1 - x2) == 2) || ((x2 - x1) == 2)))
{
castling = true;
}
// Special handling for pawns
if ((p is Pawn))
{
// Check double step
if (Math.Abs((int)move.FromY - (int)move.ToY) == 2)
{
((Pawn)p).setDoubleStepTurn(getTurn());
}
//Check if en passant
if ((getSquareAt(x2, y2).getPiece() == null) && (x1 != x2))
{
enPassant = true;
}
}
// Remove from old position
s1.removePiece();
// Add to new position
if ((p is Pawn && p.getColour() == "white" && y2 == 7) ||
(p is Pawn && p.getColour() == "black" && y2 == 0))
{
p = new Queen(x1, y1, p.getColour());
}
s2.setPiece(p);
p.move(x2, y2);
// Handles the special castling case
if (castling)
{
uint x2rook;
uint x1rook;
if (x2 > x1)// Castling right
{
x1rook = 7;
x2rook = x2 - 1;
}
else
{
x1rook = 0;
x2rook = x2 + 1;
}
Square s3 = getSquareAt(x1rook, y1);
Piece p3 = s3.getPiece();
Square s4 = getSquareAt(x2rook, y1);
s3.removePiece();
s4.setPiece(p3);
p3.move(x2rook, y2);
}
// Handles the special en passant case
if (enPassant)
{
int yMod;
if (p.getColour() == "white")
yMod = -1;
else
yMod = 1;
Square s3 = getSquareAt(x2, (uint)(y2 + yMod));
Piece p3 = s3.getPiece();
s3.removePiece();
}
updateCover();
return true;
}
// Compare this move to another.
public bool Equals(Move m)
{
if (m == null)
{
return false;
}
return m.FromX == fromX &&
m.FromY == fromY &&
m.ToX == toX &&
m.ToY == toY &&
m.GiveUp == giveUp &&
m.Illegal == illegal;
}
// Return an exact copy of the move.
public Move Copy()
{
Move copy = new Move(fromX, fromY, toX, toY);
copy.GiveUp = giveUp;
copy.Illegal = illegal;
return copy;
}