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chess
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Reformat everything (mainly to fit 80 character width limit)

This commit is contained in:
Kai S. K. Engelbart 2020-05-19 16:50:12 +02:00
parent 616843b547
commit 72aa8d0881
Signed by: kske
GPG Key ID: 8BEB13EC5DF7EF13
51 changed files with 2145 additions and 1005 deletions
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47
src/dev/kske/chess/board/Bishop.java
View File

@ -35,37 +35,54 @@ public class Bishop extends Piece {
// Diagonal moves to the lower right // Diagonal moves to the lower right
for (int i = pos.x + 1, j = pos.y + 1; i < 8 && j < 8; i++, j++) { for (int i = pos.x + 1, j = pos.y + 1; i < 8 && j < 8; i++, j++) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the lower left // Diagonal moves to the lower left
for (int i = pos.x - 1, j = pos.y + 1; i >= 0 && j < 8; i--, j++) { for (int i = pos.x - 1, j = pos.y + 1; i >= 0 && j < 8; i--, j++) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the upper right // Diagonal moves to the upper right
for (int i = pos.x + 1, j = pos.y - 1; i < 8 && j >= 0; i++, j--) { for (int i = pos.x + 1, j = pos.y - 1; i < 8 && j >= 0; i++, j--) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the upper left // Diagonal moves to the upper left
for (int i = pos.x - 1, j = pos.y - 1; i >= 0 && j >= 0; i--, j--) { for (int i = pos.x - 1, j = pos.y - 1; i >= 0 && j >= 0; i--, j--) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
return moves; return moves;
} }

205
src/dev/kske/chess/board/Board.java
View File

@ -16,14 +16,16 @@ import dev.kske.chess.event.MoveEvent;
*/ */
public class Board { public class Board {
private Piece[][] boardArr = new Piece[8][8]; private Piece[][] boardArr = new Piece[8][8];
private Map<Color, Position> kingPos = new EnumMap<>(Color.class); private Map<Color, Position> kingPos = new EnumMap<>(Color.class);
private Log log = new Log(); private Log log = new Log();
/** /**
* Initializes the board with the default chess starting position. * Initializes the board with the default chess starting position.
*/ */
public Board() { initDefaultPositions(); } public Board() {
initDefaultPositions();
}
/** /**
* Creates a copy of another {@link Board} instance.<br> * Creates a copy of another {@link Board} instance.<br>
@ -31,16 +33,18 @@ public class Board {
* history of the Board to copy. * history of the Board to copy.
* *
* @param other The Board instance to copy * @param other The Board instance to copy
* @param copyVariations if set to {@code true}, the {@link Log} object of the * @param copyVariations if set to {@code true}, the {@link Log} object of
* the
* other Board instance is copied with its entire move * other Board instance is copied with its entire move
* history * history
*/ */
public Board(Board other, boolean copyVariations) { public Board(Board other, boolean copyVariations) {
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++) { for (int j = 0; j < 8; j++) {
if (other.boardArr[i][j] == null) continue; if (other.boardArr[i][j] == null)
boardArr[i][j] = (Piece) other.boardArr[i][j].clone(); continue;
boardArr[i][j].board = this; boardArr[i][j] = (Piece) other.boardArr[i][j].clone();
boardArr[i][j].board = this;
} }
kingPos.putAll(other.kingPos); kingPos.putAll(other.kingPos);
@ -59,7 +63,8 @@ public class Board {
*/ */
public boolean attemptMove(Move move) { public boolean attemptMove(Move move) {
Piece piece = getPos(move); Piece piece = getPos(move);
if (piece == null || !piece.isValidMove(move)) return false; if (piece == null || !piece.isValidMove(move))
return false;
// Move piece // Move piece
move(move); move(move);
@ -69,7 +74,6 @@ public class Board {
revert(); revert();
return false; return false;
} }
return true; return true;
} }
@ -79,14 +83,15 @@ public class Board {
* @param move The move to execute * @param move The move to execute
*/ */
public void move(Move move) { public void move(Move move) {
Piece piece = getPos(move); Piece piece = getPos(move);
Piece capturePiece = getDest(move); Piece capturePiece = getDest(move);
// Execute the move // Execute the move
move.execute(this); move.execute(this);
// Update the king's position if the moved piece is the king // Update the king's position if the moved piece is the king
if (piece instanceof King) kingPos.put(piece.getColor(), move.getDest()); if (piece instanceof King)
kingPos.put(piece.getColor(), move.getDest());
// Update log // Update log
log.add(move, piece, capturePiece); log.add(move, piece, capturePiece);
@ -97,20 +102,23 @@ public class Board {
* *
* @param sanMove The move to execute in SAN (Standard Algebraic Notation) * @param sanMove The move to execute in SAN (Standard Algebraic Notation)
*/ */
public void move(String sanMove) { move(Move.fromSAN(sanMove, this)); } public void move(String sanMove) {
move(Move.fromSAN(sanMove, this));
}
/** /**
* Reverts the last move and removes it from the log. * Reverts the last move and removes it from the log.
*/ */
public void revert() { public void revert() {
MoveNode moveNode = log.getLast(); MoveNode moveNode = log.getLast();
Move move = moveNode.move; Move move = moveNode.move;
// Revert the move // Revert the move
move.revert(this, moveNode.capturedPiece); move.revert(this, moveNode.capturedPiece);
// Update the king's position if the moved piece is the king // Update the king's position if the moved piece is the king
if (getPos(move) instanceof King) kingPos.put(getPos(move).getColor(), move.getPos()); if (getPos(move) instanceof King)
kingPos.put(getPos(move).getColor(), move.getPos());
// Update log // Update log
log.removeLast(); log.removeLast();
@ -118,11 +126,12 @@ public class Board {
/** /**
* Reverts the last move without removing it from the log. After that, a * Reverts the last move without removing it from the log. After that, a
* {@link MoveEvent} is dispatched containing the inverse of the reverted move. * {@link MoveEvent} is dispatched containing the inverse of the reverted
* move.
*/ */
public void selectPreviousNode() { public void selectPreviousNode() {
MoveNode moveNode = log.getLast(); MoveNode moveNode = log.getLast();
Move move = moveNode.move; Move move = moveNode.move;
// Revert the move // Revert the move
move.revert(this, moveNode.capturedPiece); move.revert(this, moveNode.capturedPiece);
@ -131,25 +140,35 @@ public class Board {
log.selectPreviousNode(); log.selectPreviousNode();
// Dispatch move event // Dispatch move event
EventBus.getInstance().dispatch(new MoveEvent(move.invert(), getState(log.getActiveColor().opposite()))); EventBus.getInstance()
.dispatch(
new MoveEvent(
move.invert(),
getState(log.getActiveColor().opposite())
)
);
} }
/** /**
* Applies the next move stored in the log. After that, a {@link MoveEvent} is * Applies the next move stored in the log. After that, a {@link MoveEvent}
* is
* dispatched. * dispatched.
* *
* @param index the variation index of the move to select * @param index the variation index of the move to select
*/ */
public void selectNextNode(int index) { public void selectNextNode(int index) {
log.selectNextNode(index); log.selectNextNode(index);
MoveNode moveNode = log.getLast(); MoveNode moveNode = log.getLast();
Move move = moveNode.move; Move move = moveNode.move;
// Execute the next move // Execute the next move
move.execute(this); move.execute(this);
// Dispatch move event // Dispatch move event
EventBus.getInstance().dispatch(new MoveEvent(move, getState(log.getActiveColor().opposite()))); EventBus.getInstance()
.dispatch(
new MoveEvent(move, getState(log.getActiveColor().opposite()))
);
} }
/** /**
@ -162,7 +181,10 @@ public class Board {
List<Move> moves = new ArrayList<>(); List<Move> moves = new ArrayList<>();
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++) for (int j = 0; j < 8; j++)
if (boardArr[i][j] != null && boardArr[i][j].getColor() == color) moves.addAll(boardArr[i][j].getMoves(new Position(i, j))); if (
boardArr[i][j] != null && boardArr[i][j].getColor() == color
)
moves.addAll(boardArr[i][j].getMoves(new Position(i, j)));
return moves; return moves;
} }
@ -172,7 +194,9 @@ public class Board {
* @param pos the position of the piece to invoke the method on * @param pos the position of the piece to invoke the method on
* @return a list of legal moves generated for the piece * @return a list of legal moves generated for the piece
*/ */
public List<Move> getMoves(Position pos) { return get(pos).getMoves(pos); } public List<Move> getMoves(Position pos) {
return get(pos).getMoves(pos);
}
/** /**
* Checks, if the king is in check. * Checks, if the king is in check.
@ -180,7 +204,9 @@ public class Board {
* @param color The color of the king to check * @param color The color of the king to check
* @return {@code true}, if the king is in check * @return {@code true}, if the king is in check
*/ */
public boolean checkCheck(Color color) { return isAttacked(kingPos.get(color), color.opposite()); } public boolean checkCheck(Color color) {
return isAttacked(kingPos.get(color), color.opposite());
}
/** /**
* Checks, if a field can be attacked by pieces of a certain color. * Checks, if a field can be attacked by pieces of a certain color.
@ -193,7 +219,11 @@ public class Board {
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++) { for (int j = 0; j < 8; j++) {
Position pos = new Position(i, j); Position pos = new Position(i, j);
if (get(pos) != null && get(pos).getColor() == color && get(pos).isValidMove(new Move(pos, dest))) return true; if (
get(pos) != null && get(pos).getColor() == color
&& get(pos).isValidMove(new Move(pos, dest))
)
return true;
} }
return false; return false;
} }
@ -207,13 +237,15 @@ public class Board {
*/ */
public boolean checkCheckmate(Color color) { public boolean checkCheckmate(Color color) {
// Return false immediately if the king can move // Return false immediately if the king can move
if (!getMoves(kingPos.get(color)).isEmpty()) return false; if (!getMoves(kingPos.get(color)).isEmpty())
return false;
for (Move move : getMoves(color)) { for (Move move : getMoves(color)) {
move(move); move(move);
boolean check = checkCheck(color); boolean check = checkCheck(color);
revert(); revert();
if (!check) return false; if (!check)
return false;
} }
return true; return true;
} }
@ -226,8 +258,9 @@ public class Board {
* @return the current {@link BoardState} * @return the current {@link BoardState}
*/ */
public BoardState getState(Color color) { public BoardState getState(Color color) {
return checkCheck(color) ? checkCheckmate(color) ? BoardState.CHECKMATE : BoardState.CHECK return checkCheck(color) ? checkCheckmate(color) ? BoardState.CHECKMATE
: getMoves(color).isEmpty() || log.getLast().halfmoveClock >= 50 ? BoardState.STALEMATE : BoardState.NORMAL; : BoardState.CHECK
: getMoves(color).isEmpty() || log.getLast().halfmoveClock >= 50 ? BoardState.STALEMATE : BoardState.NORMAL;
} }
/** /**
@ -236,39 +269,38 @@ public class Board {
public void initDefaultPositions() { public void initDefaultPositions() {
// Initialize pawns // Initialize pawns
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
boardArr[i][1] = new Pawn(Color.BLACK, this); boardArr[i][1] = new Pawn(Color.BLACK, this);
boardArr[i][6] = new Pawn(Color.WHITE, this); boardArr[i][6] = new Pawn(Color.WHITE, this);
} }
// Initialize kings // Initialize kings
boardArr[4][0] = new King(Color.BLACK, this); boardArr[4][0] = new King(Color.BLACK, this);
boardArr[4][7] = new King(Color.WHITE, this); boardArr[4][7] = new King(Color.WHITE, this);
// Initialize king position objects // Initialize king position objects
kingPos.put(Color.BLACK, new Position(4, 0)); kingPos.put(Color.BLACK, new Position(4, 0));
kingPos.put(Color.WHITE, new Position(4, 7)); kingPos.put(Color.WHITE, new Position(4, 7));
// Initialize queens // Initialize queens
boardArr[3][0] = new Queen(Color.BLACK, this); boardArr[3][0] = new Queen(Color.BLACK, this);
boardArr[3][7] = new Queen(Color.WHITE, this); boardArr[3][7] = new Queen(Color.WHITE, this);
// Initialize rooks // Initialize rooks
boardArr[0][0] = new Rook(Color.BLACK, this); boardArr[0][0] = new Rook(Color.BLACK, this);
boardArr[0][7] = new Rook(Color.WHITE, this); boardArr[0][7] = new Rook(Color.WHITE, this);
boardArr[7][0] = new Rook(Color.BLACK, this); boardArr[7][0] = new Rook(Color.BLACK, this);
boardArr[7][7] = new Rook(Color.WHITE, this); boardArr[7][7] = new Rook(Color.WHITE, this);
// Initialize knights // Initialize knights
boardArr[1][0] = new Knight(Color.BLACK, this); boardArr[1][0] = new Knight(Color.BLACK, this);
boardArr[1][7] = new Knight(Color.WHITE, this); boardArr[1][7] = new Knight(Color.WHITE, this);
boardArr[6][0] = new Knight(Color.BLACK, this); boardArr[6][0] = new Knight(Color.BLACK, this);
boardArr[6][7] = new Knight(Color.WHITE, this); boardArr[6][7] = new Knight(Color.WHITE, this);
// Initialize bishops // Initialize bishops
boardArr[2][0] = new Bishop(Color.BLACK, this); boardArr[2][0] = new Bishop(Color.BLACK, this);
boardArr[2][7] = new Bishop(Color.WHITE, this); boardArr[2][7] = new Bishop(Color.WHITE, this);
boardArr[5][0] = new Bishop(Color.BLACK, this); boardArr[5][0] = new Bishop(Color.BLACK, this);
boardArr[5][7] = new Bishop(Color.WHITE, this); boardArr[5][7] = new Bishop(Color.WHITE, this);
// Clear all other tiles // Clear all other tiles
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
@ -280,27 +312,33 @@ public class Board {
@Override @Override
public int hashCode() { public int hashCode() {
final int prime = 31; final int prime = 31;
int result = 1; int result = 1;
result = prime * result + Arrays.deepHashCode(boardArr); result = prime * result + Arrays.deepHashCode(boardArr);
result = prime * result + Objects.hash(kingPos, log); result = prime * result + Objects.hash(kingPos, log);
return result; return result;
} }
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (obj == null) return false; return true;
if (getClass() != obj.getClass()) return false; if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Board other = (Board) obj; Board other = (Board) obj;
return Arrays.deepEquals(boardArr, other.boardArr) && Objects.equals(kingPos, other.kingPos) && Objects.equals(log, other.log); return Arrays.deepEquals(boardArr, other.boardArr) && Objects
.equals(kingPos, other.kingPos) && Objects.equals(log, other.log);
} }
/** /**
* @param pos The position from which to return a piece * @param pos The position from which to return a piece
* @return The piece at the position * @return The piece at the position
*/ */
public Piece get(Position pos) { return boardArr[pos.x][pos.y]; } public Piece get(Position pos) {
return boardArr[pos.x][pos.y];
}
/** /**
* Searches for a {@link Piece} inside a file (A - H). * Searches for a {@link Piece} inside a file (A - H).
@ -313,7 +351,12 @@ public class Board {
public int get(Class<? extends Piece> pieceClass, char file) { public int get(Class<? extends Piece> pieceClass, char file) {
int x = file - 97; int x = file - 97;
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
if (boardArr[x][i] != null && boardArr[x][i].getClass() == pieceClass && boardArr[x][i].getColor() == log.getActiveColor()) return 8 - i; if (
boardArr[x][i] != null
&& boardArr[x][i].getClass() == pieceClass
&& boardArr[x][i].getColor() == log.getActiveColor()
)
return 8 - i;
return -1; return -1;
} }
@ -328,7 +371,11 @@ public class Board {
public char get(Class<? extends Piece> pieceClass, int rank) { public char get(Class<? extends Piece> pieceClass, int rank) {
int y = rank - 1; int y = rank - 1;
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
if (boardArr[i][y] != null && boardArr[i][y].getClass() == pieceClass && boardArr[i][y].getColor() == log.getActiveColor()) if (
boardArr[i][y] != null
&& boardArr[i][y].getClass() == pieceClass
&& boardArr[i][y].getColor() == log.getActiveColor()
)
return (char) (i + 97); return (char) (i + 97);
return '-'; return '-';
} }
@ -338,14 +385,20 @@ public class Board {
* *
* @param pieceClass The class of the piece to search for * @param pieceClass The class of the piece to search for
* @param dest The destination that the piece is required to reach * @param dest The destination that the piece is required to reach
* @return The position of a piece that can move to the specified destination * @return The position of a piece that can move to the specified
* destination
*/ */
public Position get(Class<? extends Piece> pieceClass, Position dest) { public Position get(Class<? extends Piece> pieceClass, Position dest) {
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++) for (int j = 0; j < 8; j++)
if (boardArr[i][j] != null && boardArr[i][j].getClass() == pieceClass && boardArr[i][j].getColor() == log.getActiveColor()) { if (
boardArr[i][j] != null
&& boardArr[i][j].getClass() == pieceClass
&& boardArr[i][j].getColor() == log.getActiveColor()
) {
Position pos = new Position(i, j); Position pos = new Position(i, j);
if (boardArr[i][j].isValidMove(new Move(pos, dest))) return pos; if (boardArr[i][j].isValidMove(new Move(pos, dest)))
return pos;
} }
return null; return null;
} }
@ -356,19 +409,25 @@ public class Board {
* @param pos The position to place the piece at * @param pos The position to place the piece at
* @param piece The piece to place * @param piece The piece to place
*/ */
public void set(Position pos, Piece piece) { boardArr[pos.x][pos.y] = piece; } public void set(Position pos, Piece piece) {
boardArr[pos.x][pos.y] = piece;
}
/** /**
* @param move The move from which position to return a piece * @param move The move from which position to return a piece
* @return The piece at the position of the move * @return The piece at the position of the move
*/ */
public Piece getPos(Move move) { return get(move.getPos()); } public Piece getPos(Move move) {
return get(move.getPos());
}
/** /**
* @param move The move from which destination to return a piece * @param move The move from which destination to return a piece
* @return The piece at the destination of the move * @return The piece at the destination of the move
*/ */
public Piece getDest(Move move) { return get(move.getDest()); } public Piece getDest(Move move) {
return get(move.getDest());
}
/** /**
* Places a piece at the position of a move. * Places a piece at the position of a move.
@ -376,7 +435,9 @@ public class Board {
* @param move The move at which position to place the piece * @param move The move at which position to place the piece
* @param piece The piece to place * @param piece The piece to place
*/ */
public void setPos(Move move, Piece piece) { set(move.getPos(), piece); } public void setPos(Move move, Piece piece) {
set(move.getPos(), piece);
}
/** /**
* Places a piece at the destination of a move. * Places a piece at the destination of a move.
@ -384,7 +445,9 @@ public class Board {
* @param move The move at which destination to place the piece * @param move The move at which destination to place the piece
* @param piece The piece to place * @param piece The piece to place
*/ */
public void setDest(Move move, Piece piece) { set(move.getDest(), piece); } public void setDest(Move move, Piece piece) {
set(move.getDest(), piece);
}
/** /**
* @return The board array * @return The board array

10
src/dev/kske/chess/board/Castling.java
View File

@ -20,7 +20,8 @@ public class Castling extends Move {
*/ */
public Castling(Position pos, Position dest) { public Castling(Position pos, Position dest) {
super(pos, dest); super(pos, dest);
rookMove = dest.x == 6 ? new Move(7, pos.y, 5, pos.y) : new Move(0, pos.y, 3, pos.y); rookMove = dest.x == 6 ? new Move(7, pos.y, 5, pos.y)
: new Move(0, pos.y, 3, pos.y);
} }
/** /**
@ -31,7 +32,9 @@ public class Castling extends Move {
* @param xDest the horizontal destination of this castling move * @param xDest the horizontal destination of this castling move
* @param yDest the vertical destination of this castling move * @param yDest the vertical destination of this castling move
*/ */
public Castling(int xPos, int yPos, int xDest, int yDest) { this(new Position(xPos, yPos), new Position(xDest, yDest)); } public Castling(int xPos, int yPos, int xDest, int yDest) {
this(new Position(xPos, yPos), new Position(xDest, yDest));
}
@Override @Override
public void execute(Board board) { public void execute(Board board) {
@ -48,7 +51,8 @@ public class Castling extends Move {
} }
/** /**
* @return {@code O-O-O} for a queenside castling or {@code O-O} for a kingside * @return {@code O-O-O} for a queenside castling or {@code O-O} for a
* kingside
* castling * castling
*/ */
@Override @Override

9
src/dev/kske/chess/board/EnPassant.java
View File

@ -31,7 +31,9 @@ public class EnPassant extends Move {
* @param xDest the horizontal destination of this move * @param xDest the horizontal destination of this move
* @param yDest the vertical destination of this move * @param yDest the vertical destination of this move
*/ */
public EnPassant(int xPos, int yPos, int xDest, int yDest) { this(new Position(xPos, yPos), new Position(xDest, yDest)); } public EnPassant(int xPos, int yPos, int xDest, int yDest) {
this(new Position(xPos, yPos), new Position(xDest, yDest));
}
@Override @Override
public void execute(Board board) { public void execute(Board board) {
@ -42,7 +44,10 @@ public class EnPassant extends Move {
@Override @Override
public void revert(Board board, Piece capturedPiece) { public void revert(Board board, Piece capturedPiece) {
super.revert(board, capturedPiece); super.revert(board, capturedPiece);
board.set(capturePos, new Pawn(board.get(pos).getColor().opposite(), board)); board.set(
capturePos,
new Pawn(board.get(pos).getColor().opposite(), board)
);
} }
/** /**

128
src/dev/kske/chess/board/FENString.java
View File

@ -21,23 +21,23 @@ import dev.kske.chess.exception.ChessException;
*/ */
public class FENString { public class FENString {
private Board board; private Board board;
private String piecePlacement, castlingAvailability; private String piecePlacement, castlingAvailability;
private int halfmoveClock, fullmoveNumber; private int halfmoveClock, fullmoveNumber;
private Color activeColor; private Color activeColor;
private Position enPassantTargetSquare; private Position enPassantTargetSquare;
/** /**
* Constructs a {@link FENString} representing the starting position * Constructs a {@link FENString} representing the starting position
* {@code rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1}. * {@code rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1}.
*/ */
public FENString() { public FENString() {
board = new Board(); board = new Board();
piecePlacement = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR"; piecePlacement = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR";
activeColor = Color.WHITE; activeColor = Color.WHITE;
castlingAvailability = "KQkq"; castlingAvailability = "KQkq";
halfmoveClock = 0; halfmoveClock = 0;
fullmoveNumber = 1; fullmoveNumber = 1;
} }
/** /**
@ -48,18 +48,25 @@ public class FENString {
*/ */
public FENString(String fen) throws ChessException { public FENString(String fen) throws ChessException {
// Check fen string against regex // Check fen string against regex
Pattern fenPattern = Pattern.compile( Pattern fenPattern = Pattern.compile(
"^(?<piecePlacement>(?:[1-8nbrqkpNBRQKP]{1,8}\\/){7}[1-8nbrqkpNBRQKP]{1,8}) (?<activeColor>[wb]) (?<castlingAvailability>-|[KQkq]{1,4}) (?<enPassantTargetSquare>-|[a-h][1-8]) (?<halfmoveClock>\\d+) (?<fullmoveNumber>\\d+)$"); "^(?<piecePlacement>(?:[1-8nbrqkpNBRQKP]{1,8}\\/){7}[1-8nbrqkpNBRQKP]{1,8}) (?<activeColor>[wb]) (?<castlingAvailability>-|[KQkq]{1,4}) (?<enPassantTargetSquare>-|[a-h][1-8]) (?<halfmoveClock>\\d+) (?<fullmoveNumber>\\d+)$"
Matcher matcher = fenPattern.matcher(fen); );
if (!matcher.find()) throw new ChessException("FEN string does not match pattern " + fenPattern.pattern()); Matcher matcher = fenPattern.matcher(fen);
if (!matcher.find())
throw new ChessException(
"FEN string does not match pattern " + fenPattern.pattern()
);
// Initialize data fields // Initialize data fields
piecePlacement = matcher.group("piecePlacement"); piecePlacement = matcher.group("piecePlacement");
activeColor = Color.fromFirstChar(matcher.group("activeColor").charAt(0)); activeColor
castlingAvailability = matcher.group("castlingAvailability"); = Color.fromFirstChar(matcher.group("activeColor").charAt(0));
if (!matcher.group("enPassantTargetSquare").equals("-")) enPassantTargetSquare = Position.fromLAN(matcher.group("enPassantTargetSquare")); castlingAvailability = matcher.group("castlingAvailability");
halfmoveClock = Integer.parseInt(matcher.group("halfmoveClock")); if (!matcher.group("enPassantTargetSquare").equals("-"))
fullmoveNumber = Integer.parseInt(matcher.group("fullmoveNumber")); enPassantTargetSquare
= Position.fromLAN(matcher.group("enPassantTargetSquare"));
halfmoveClock = Integer.parseInt(matcher.group("halfmoveClock"));
fullmoveNumber = Integer.parseInt(matcher.group("fullmoveNumber"));
// Initialize and clean board // Initialize and clean board
board = new Board(); board = new Board();
@ -71,30 +78,40 @@ public class FENString {
// Piece placement // Piece placement
final String[] rows = piecePlacement.split("/"); final String[] rows = piecePlacement.split("/");
if (rows.length != 8) throw new ChessException("FEN string contains invalid piece placement"); if (rows.length != 8)
throw new ChessException(
"FEN string contains invalid piece placement"
);
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
final char[] cols = rows[i].toCharArray(); final char[] cols = rows[i].toCharArray();
int j = 0; int j = 0;
for (char c : cols) { for (char c : cols)
// Empty space // Empty space
if (Character.isDigit(c)) { if (Character.isDigit(c))
j += Character.getNumericValue(c); j += Character.getNumericValue(c);
} else { else {
Color color = Character.isUpperCase(c) ? Color.WHITE : Color.BLACK; Color color
= Character.isUpperCase(c) ? Color.WHITE : Color.BLACK;
try { try {
Constructor<? extends Piece> pieceConstructor = Piece.fromFirstChar(c).getDeclaredConstructor(Color.class, Board.class); Constructor<? extends Piece> pieceConstructor = Piece
.fromFirstChar(c)
.getDeclaredConstructor(Color.class, Board.class);
pieceConstructor.setAccessible(true); pieceConstructor.setAccessible(true);
board.getBoardArr()[j][i] = pieceConstructor.newInstance(color, board); board.getBoardArr()[j][i]
} catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException = pieceConstructor.newInstance(color, board);
| NoSuchMethodException | SecurityException e) { } catch (
InstantiationException
| IllegalAccessException
| IllegalArgumentException
| InvocationTargetException
| NoSuchMethodException
| SecurityException e
) {
e.printStackTrace(); e.printStackTrace();
} }
++j; ++j;
} }
}
} }
// Active color // Active color
board.getLog().setActiveColor(activeColor); board.getLog().setActiveColor(activeColor);
@ -144,7 +161,8 @@ public class FENString {
for (int j = 0; j < 8; j++) { for (int j = 0; j < 8; j++) {
final Piece piece = board.getBoardArr()[j][i]; final Piece piece = board.getBoardArr()[j][i];
if (piece == null) ++empty; if (piece == null)
++empty;
else { else {
// Write empty field count // Write empty field count
@ -152,20 +170,22 @@ public class FENString {
sb.append(empty); sb.append(empty);
empty = 0; empty = 0;
} }
// Write piece character // Write piece character
char p = piece.firstChar(); char p = piece.firstChar();
sb.append(piece.getColor() == Color.WHITE ? Character.toUpperCase(p) : p); sb.append(
piece.getColor() == Color.WHITE
? Character.toUpperCase(p)
: p
);
} }
} }
// Write empty field count // Write empty field count
if (empty > 0) { if (empty > 0) {
sb.append(empty); sb.append(empty);
empty = 0; empty = 0;
} }
if (i < 7)
if (i < 7) sb.append('/'); sb.append('/');
} }
piecePlacement = sb.toString(); piecePlacement = sb.toString();
@ -174,10 +194,14 @@ public class FENString {
// Castling availability // Castling availability
castlingAvailability = ""; castlingAvailability = "";
final char castlingRightsChars[] = new char[] { 'K', 'Q', 'k', 'q' }; final char castlingRightsChars[] = new char[] {
'K', 'Q', 'k', 'q'
};
for (int i = 0; i < 4; i++) for (int i = 0; i < 4; i++)
if (board.getLog().getCastlingRights()[i]) castlingAvailability += castlingRightsChars[i]; if (board.getLog().getCastlingRights()[i])
if (castlingAvailability.isEmpty()) castlingAvailability = "-"; castlingAvailability += castlingRightsChars[i];
if (castlingAvailability.isEmpty())
castlingAvailability = "-";
// En passant availability // En passant availability
enPassantTargetSquare = board.getLog().getEnPassant(); enPassantTargetSquare = board.getLog().getEnPassant();
@ -196,13 +220,15 @@ public class FENString {
*/ */
@Override @Override
public String toString() { public String toString() {
return String.format("%s %c %s %s %d %d", return String.format(
piecePlacement, "%s %c %s %s %d %d",
activeColor.firstChar(), piecePlacement,
castlingAvailability, activeColor.firstChar(),
enPassantTargetSquare == null ? "-" : enPassantTargetSquare.toLAN(), castlingAvailability,
halfmoveClock, enPassantTargetSquare == null ? "-" : enPassantTargetSquare.toLAN(),
fullmoveNumber); halfmoveClock,
fullmoveNumber
);
} }
/** /**

72
src/dev/kske/chess/board/King.java
View File

@ -19,60 +19,86 @@ public class King extends Piece {
* @param color the color of this king * @param color the color of this king
* @param board the board on which this king will be placed * @param board the board on which this king will be placed
*/ */
public King(Color color, Board board) { super(color, board); } public King(Color color, Board board) {
super(color, board);
}
@Override @Override
public boolean isValidMove(Move move) { public boolean isValidMove(Move move) {
return (move.getxDist() == 2 && move.getyDist() == 0 return move.getxDist() == 2 && move.getyDist() == 0
&& (move.getDest().x == 6 && canCastleKingside() || move.getDest().x == 2 && canCastleQueenside())) && (move.getDest().x == 6 && canCastleKingside()
|| move.getxDist() <= 1 && move.getyDist() <= 1 && checkDestination(move); || move.getDest().x == 2 && canCastleQueenside())
|| move.getxDist() <= 1 && move.getyDist() <= 1
&& checkDestination(move);
} }
@Override @Override
protected List<Move> getPseudolegalMoves(Position pos) { protected List<Move> getPseudolegalMoves(Position pos) {
List<Move> moves = new ArrayList<>(); List<Move> moves = new ArrayList<>();
for (int i = Math.max(0, pos.x - 1); i < Math.min(8, pos.x + 2); i++) for (int i = Math.max(0, pos.x - 1); i < Math.min(8, pos.x + 2); i++)
for (int j = Math.max(0, pos.y - 1); j < Math.min(8, pos.y + 2); j++) for (
int j = Math.max(0, pos.y - 1);
j < Math.min(8, pos.y + 2);
j++
)
if (i != pos.x || j != pos.y) { if (i != pos.x || j != pos.y) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) moves.add(move); if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
)
moves.add(move);
} }
// Castling // Castling
if (canCastleKingside()) moves.add(new Castling(pos, new Position(6, pos.y))); if (canCastleKingside())
if (canCastleQueenside()) moves.add(new Castling(pos, new Position(2, pos.y))); moves.add(new Castling(pos, new Position(6, pos.y)));
if (canCastleQueenside())
moves.add(new Castling(pos, new Position(2, pos.y)));
return moves; return moves;
} }
private boolean canCastleKingside() { private boolean canCastleKingside() {
if (board.getLog().getCastlingRights()[getColor() == Color.WHITE ? MoveNode.WHITE_KINGSIDE : MoveNode.BLACK_KINGSIDE]) { if (
int y = getColor() == Color.WHITE ? 7 : 0; board.getLog().getCastlingRights()[getColor() == Color.WHITE
Position kingPos = new Position(4, y); ? MoveNode.WHITE_KINGSIDE
Position jumpPos = new Position(5, y); : MoveNode.BLACK_KINGSIDE]
Position kingDest = new Position(6, y); ) {
Position rookPos = new Position(7, y); int y = getColor() == Color.WHITE ? 7 : 0;
Position kingPos = new Position(4, y);
Position jumpPos = new Position(5, y);
Position kingDest = new Position(6, y);
Position rookPos = new Position(7, y);
return canCastle(kingPos, kingDest, rookPos, jumpPos); return canCastle(kingPos, kingDest, rookPos, jumpPos);
} }
return false; return false;
} }
private boolean canCastleQueenside() { private boolean canCastleQueenside() {
if (board.getLog().getCastlingRights()[getColor() == Color.WHITE ? MoveNode.WHITE_QUEENSIDE : MoveNode.BLACK_QUEENSIDE]) { if (
int y = getColor() == Color.WHITE ? 7 : 0; board.getLog().getCastlingRights()[getColor() == Color.WHITE
Position kingPos = new Position(4, y); ? MoveNode.WHITE_QUEENSIDE
Position jumpPos = new Position(3, y); : MoveNode.BLACK_QUEENSIDE]
Position freeDest = new Position(1, y); ) {
Position rookPos = new Position(0, y); int y = getColor() == Color.WHITE ? 7 : 0;
Position kingPos = new Position(4, y);
Position jumpPos = new Position(3, y);
Position freeDest = new Position(1, y);
Position rookPos = new Position(0, y);
return canCastle(kingPos, freeDest, rookPos, jumpPos); return canCastle(kingPos, freeDest, rookPos, jumpPos);
} }
return false; return false;
} }
private boolean canCastle(Position kingPos, Position freeDest, Position rookPos, Position jumpPos) { private boolean canCastle(
Position kingPos, Position freeDest, Position rookPos, Position jumpPos
) {
Piece rook = board.get(rookPos); Piece rook = board.get(rookPos);
return rook != null && rook instanceof Rook && isFreePath(new Move(kingPos, freeDest)) && !board.isAttacked(kingPos, getColor().opposite()) return rook != null && rook instanceof Rook && isFreePath(
&& !board.isAttacked(jumpPos, getColor().opposite()); new Move(kingPos, freeDest)
) && !board.isAttacked(kingPos, getColor().opposite())
&& !board.isAttacked(jumpPos, getColor().opposite());
} }
@Override @Override

23
src/dev/kske/chess/board/Knight.java
View File

@ -26,13 +26,22 @@ public class Knight extends Piece {
@Override @Override
public boolean isValidMove(Move move) { public boolean isValidMove(Move move) {
return Math.abs(move.getxDist() - move.getyDist()) == 1 return Math.abs(move.getxDist() - move.getyDist()) == 1
&& (move.getxDist() == 1 && move.getyDist() == 2 || move.getxDist() == 2 && move.getyDist() == 1) && checkDestination(move); && (move.getxDist() == 1 && move.getyDist() == 2
|| move.getxDist() == 2 && move.getyDist() == 1)
&& checkDestination(move);
} }
private void checkAndInsertMove(List<Move> moves, Position pos, int offsetX, int offsetY) { private void checkAndInsertMove(
if (pos.x + offsetX >= 0 && pos.x + offsetX < 8 && pos.y + offsetY >= 0 && pos.y + offsetY < 8) { List<Move> moves, Position pos, int offsetX, int offsetY
Move move = new Move(pos, new Position(pos.x + offsetX, pos.y + offsetY)); ) {
if (checkDestination(move)) moves.add(move); if (
pos.x + offsetX >= 0 && pos.x + offsetX < 8 && pos.y + offsetY >= 0
&& pos.y + offsetY < 8
) {
Move move
= new Move(pos, new Position(pos.x + offsetX, pos.y + offsetY));
if (checkDestination(move))
moves.add(move);
} }
} }
@ -54,5 +63,7 @@ public class Knight extends Piece {
public int getValue() { return 35; } public int getValue() { return 35; }
@Override @Override
public char firstChar() { return 'n'; } public char firstChar() {
return 'n';
}
} }

192
src/dev/kske/chess/board/Log.java
View File

@ -21,31 +21,35 @@ public class Log implements Iterable<MoveNode> {
private MoveNode root, current; private MoveNode root, current;
private Color activeColor; private Color activeColor;
private boolean[] castlingRights; private boolean[] castlingRights;
private Position enPassant; private Position enPassant;
private int fullmoveNumber, halfmoveClock; private int fullmoveNumber, halfmoveClock;
/** /**
* Creates an instance of {@link Log} in the default state. * Creates an instance of {@link Log} in the default state.
*/ */
public Log() { reset(); } public Log() {
reset();
}
/** /**
* Creates a (partially deep) copy of another {@link Log} instance which begins * Creates a (partially deep) copy of another {@link Log} instance which
* begins
* with the current {@link MoveNode}. * with the current {@link MoveNode}.
* *
* @param other The {@link Log} instance to copy * @param other The {@link Log} instance to copy
* @param copyVariations If set to {@code true}, subsequent variations of the * @param copyVariations If set to {@code true}, subsequent variations of
* the
* current {@link MoveNode} are copied with the * current {@link MoveNode} are copied with the
* {@link Log} * {@link Log}
*/ */
public Log(Log other, boolean copyVariations) { public Log(Log other, boolean copyVariations) {
enPassant = other.enPassant; enPassant = other.enPassant;
castlingRights = other.castlingRights.clone(); castlingRights = other.castlingRights.clone();
activeColor = other.activeColor; activeColor = other.activeColor;
fullmoveNumber = other.fullmoveNumber; fullmoveNumber = other.fullmoveNumber;
halfmoveClock = other.halfmoveClock; halfmoveClock = other.halfmoveClock;
// The new root is the current node of the copied instance // The new root is the current node of the copied instance
if (!other.isEmpty()) { if (!other.isEmpty()) {
@ -64,17 +68,21 @@ public class Log implements Iterable<MoveNode> {
public Iterator<MoveNode> iterator() { public Iterator<MoveNode> iterator() {
return new Iterator<MoveNode>() { return new Iterator<MoveNode>() {
private MoveNode current = root; private MoveNode current = root;
private boolean hasNext = !isEmpty(); private boolean hasNext = !isEmpty();
@Override @Override
public boolean hasNext() { return hasNext; } public boolean hasNext() {
return hasNext;
}
@Override @Override
public MoveNode next() { public MoveNode next() {
MoveNode result = current; MoveNode result = current;
if (current.hasVariations()) current = current.getVariations().get(0); if (current.hasVariations())
else hasNext = false; current = current.getVariations().get(0);
else
hasNext = false;
return result; return result;
} }
}; };
@ -88,20 +96,34 @@ public class Log implements Iterable<MoveNode> {
* @param capturedPiece The piece captured with the move * @param capturedPiece The piece captured with the move
*/ */
public void add(Move move, Piece piece, Piece capturedPiece) { public void add(Move move, Piece piece, Piece capturedPiece) {
enPassant = piece instanceof Pawn && move.getyDist() == 2 ? new Position(move.getPos().x, move.getPos().y + move.getySign()) : null; enPassant = piece instanceof Pawn && move.getyDist() == 2
if (activeColor == Color.BLACK) ++fullmoveNumber; ? new Position(move.getPos().x, move.getPos().y + move.getySign())
if (piece instanceof Pawn || capturedPiece != null) halfmoveClock = 0; : null;
else++halfmoveClock; if (activeColor == Color.BLACK)
++fullmoveNumber;
if (piece instanceof Pawn || capturedPiece != null)
halfmoveClock = 0;
else
++halfmoveClock;
activeColor = activeColor.opposite(); activeColor = activeColor.opposite();
// Disable castling rights if a king or a rook has been moved // Disable castling rights if a king or a rook has been moved
if (piece instanceof King || piece instanceof Rook) disableCastlingRights(piece, move.getPos()); if (piece instanceof King || piece instanceof Rook)
disableCastlingRights(piece, move.getPos());
final MoveNode leaf = new MoveNode(move, capturedPiece, castlingRights.clone(), enPassant, activeColor, fullmoveNumber, halfmoveClock); final MoveNode leaf = new MoveNode(
move,
capturedPiece,
castlingRights.clone(),
enPassant,
activeColor,
fullmoveNumber,
halfmoveClock
);
if (isEmpty()) { if (isEmpty()) {
root = leaf; root = leaf;
current = leaf; current = leaf;
} else { } else {
current.addVariation(leaf); current.addVariation(leaf);
current = leaf; current = leaf;
@ -117,7 +139,8 @@ public class Log implements Iterable<MoveNode> {
current.getParent().getVariations().remove(current); current.getParent().getVariations().remove(current);
current = current.getParent(); current = current.getParent();
update(); update();
} else reset(); } else
reset();
} }
/** /**
@ -128,20 +151,24 @@ public class Log implements Iterable<MoveNode> {
/** /**
* @return {@code true} if the current node has a parent node * @return {@code true} if the current node has a parent node
*/ */
public boolean hasParent() { return !isEmpty() && current.hasParent(); } public boolean hasParent() {
return !isEmpty() && current.hasParent();
}
/** /**
* Reverts the log to its initial state corresponding to the default board * Reverts the log to its initial state corresponding to the default board
* position. * position.
*/ */
public void reset() { public void reset() {
root = null; root = null;
current = null; current = null;
castlingRights = new boolean[] { true, true, true, true }; castlingRights = new boolean[] {
enPassant = null; true, true, true, true
activeColor = Color.WHITE; };
fullmoveNumber = 1; enPassant = null;
halfmoveClock = 0; activeColor = Color.WHITE;
fullmoveNumber = 1;
halfmoveClock = 0;
} }
/** /**
@ -150,7 +177,10 @@ public class Log implements Iterable<MoveNode> {
* @param index the index of the variation to select * @param index the index of the variation to select
*/ */
public void selectNextNode(int index) { public void selectNextNode(int index) {
if (!isEmpty() && current.hasVariations() && index < current.getVariations().size()) { if (
!isEmpty() && current.hasVariations()
&& index < current.getVariations().size()
) {
current = current.getVariations().get(index); current = current.getVariations().get(index);
update(); update();
} }
@ -177,53 +207,78 @@ public class Log implements Iterable<MoveNode> {
} }
/** /**
* Sets the active color, castling rights, en passant target square, fullmove * Sets the active color, castling rights, en passant target square,
* fullmove
* number and halfmove clock to those of the current {@link MoveNode}. * number and halfmove clock to those of the current {@link MoveNode}.
*/ */
private void update() { private void update() {
activeColor = current.activeColor; activeColor = current.activeColor;
castlingRights = current.castlingRights.clone(); castlingRights = current.castlingRights.clone();
enPassant = current.enPassant; enPassant = current.enPassant;
fullmoveNumber = current.fullmoveCounter; fullmoveNumber = current.fullmoveCounter;
halfmoveClock = current.halfmoveClock; halfmoveClock = current.halfmoveClock;
} }
/** /**
* Removed the castling rights bound to a rook or king for the rest of the game. * Removed the castling rights bound to a rook or king for the rest of the
* game.
* This method should be called once the piece has been moved, as a castling * This method should be called once the piece has been moved, as a castling
* move involving this piece is forbidden afterwards. * move involving this piece is forbidden afterwards.
* *
* @param piece the rook or king to disable the castling rights for * @param piece the rook or king to disable the castling rights
* @param initialPosition the initial position of the piece during the start of * for
* @param initialPosition the initial position of the piece during the start
* of
* the game * the game
*/ */
private void disableCastlingRights(Piece piece, Position initialPosition) { private void disableCastlingRights(Piece piece, Position initialPosition) {
// Kingside // Kingside
if (piece instanceof King || piece instanceof Rook && initialPosition.x == 7) if (
castlingRights[piece.getColor() == Color.WHITE ? MoveNode.WHITE_KINGSIDE : MoveNode.BLACK_KINGSIDE] = false; piece instanceof King
|| piece instanceof Rook && initialPosition.x == 7
)
castlingRights[piece.getColor() == Color.WHITE
? MoveNode.WHITE_KINGSIDE
: MoveNode.BLACK_KINGSIDE] = false;
// Queenside // Queenside
if (piece instanceof King || piece instanceof Rook && initialPosition.x == 0) if (
castlingRights[piece.getColor() == Color.WHITE ? MoveNode.WHITE_QUEENSIDE : MoveNode.BLACK_QUEENSIDE] = false; piece instanceof King
|| piece instanceof Rook && initialPosition.x == 0
)
castlingRights[piece.getColor() == Color.WHITE
? MoveNode.WHITE_QUEENSIDE
: MoveNode.BLACK_QUEENSIDE] = false;
} }
@Override @Override
public int hashCode() { public int hashCode() {
final int prime = 31; final int prime = 31;
int result = 1; int result = 1;
result = prime * result + Arrays.hashCode(castlingRights); result = prime * result + Arrays.hashCode(castlingRights);
result = prime * result + Objects.hash(activeColor, current, enPassant, fullmoveNumber, halfmoveClock); result = prime * result + Objects.hash(
activeColor,
current,
enPassant,
fullmoveNumber,
halfmoveClock
);
return result; return result;
} }
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (obj == null) return false; return true;
if (getClass() != obj.getClass()) return false; if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Log other = (Log) obj; Log other = (Log) obj;
return activeColor == other.activeColor && Arrays.equals(castlingRights, other.castlingRights) && Objects.equals(current, other.current) return activeColor == other.activeColor && Arrays
&& Objects.equals(enPassant, other.enPassant) && fullmoveNumber == other.fullmoveNumber && halfmoveClock == other.halfmoveClock; .equals(castlingRights, other.castlingRights)
&& Objects.equals(current, other.current)
&& Objects.equals(enPassant, other.enPassant) && fullmoveNumber == other.fullmoveNumber && halfmoveClock == other.halfmoveClock;
} }
/** /**
@ -246,10 +301,13 @@ public class Log implements Iterable<MoveNode> {
* *
* @param castlingRights the castling rights to set * @param castlingRights the castling rights to set
*/ */
public void setCastlingRights(boolean[] castlingRights) { this.castlingRights = castlingRights; } public void setCastlingRights(boolean[] castlingRights) {
this.castlingRights = castlingRights;
}
/** /**
* @return the en passant target position of the current move or {@code null} if * @return the en passant target position of the current move or
* {@code null} if
* the current move is not an en passant move. * the current move is not an en passant move.
*/ */
public Position getEnPassant() { return enPassant; } public Position getEnPassant() { return enPassant; }
@ -259,7 +317,9 @@ public class Log implements Iterable<MoveNode> {
* *
* @param enPassant the en passant target position to set * @param enPassant the en passant target position to set
*/ */
public void setEnPassant(Position enPassant) { this.enPassant = enPassant; } public void setEnPassant(Position enPassant) {
this.enPassant = enPassant;
}
/** /**
* @return the color active during the current move * @return the color active during the current move
@ -271,7 +331,9 @@ public class Log implements Iterable<MoveNode> {
* *
* @param activeColor the active color to set * @param activeColor the active color to set
*/ */
public void setActiveColor(Color activeColor) { this.activeColor = activeColor; } public void setActiveColor(Color activeColor) {
this.activeColor = activeColor;
}
/** /**
* @return the number of moves made until the current move * @return the number of moves made until the current move
@ -283,7 +345,9 @@ public class Log implements Iterable<MoveNode> {
* *
* @param fullmoveNumber the fullmove number to set * @param fullmoveNumber the fullmove number to set
*/ */
public void setFullmoveNumber(int fullmoveNumber) { this.fullmoveNumber = fullmoveNumber; } public void setFullmoveNumber(int fullmoveNumber) {
this.fullmoveNumber = fullmoveNumber;
}
/** /**
* @return the number of halfmoves since the last capture move or pawn move * @return the number of halfmoves since the last capture move or pawn move
@ -295,5 +359,7 @@ public class Log implements Iterable<MoveNode> {
* *
* @param halfmoveClock the halfmove clock to set * @param halfmoveClock the halfmove clock to set
*/ */
public void setHalfmoveClock(int halfmoveClock) { this.halfmoveClock = halfmoveClock; } public void setHalfmoveClock(int halfmoveClock) {
this.halfmoveClock = halfmoveClock;
}
} }

230
src/dev/kske/chess/board/Move.java
View File

@ -18,8 +18,8 @@ import dev.kske.chess.board.Piece.Color;
*/ */
public class Move { public class Move {
protected final Position pos, dest; protected final Position pos, dest;
protected final int xDist, yDist, xSign, ySign; protected final int xDist, yDist, xSign, ySign;
/** /**
* Creates an instance of {@link Move}. * Creates an instance of {@link Move}.
@ -28,12 +28,12 @@ public class Move {
* @param dest the destination of this move * @param dest the destination of this move
*/ */
public Move(Position pos, Position dest) { public Move(Position pos, Position dest) {
this.pos = pos; this.pos = pos;
this.dest = dest; this.dest = dest;
xDist = Math.abs(dest.x - pos.x); xDist = Math.abs(dest.x - pos.x);
yDist = Math.abs(dest.y - pos.y); yDist = Math.abs(dest.y - pos.y);
xSign = (int) Math.signum(dest.x - pos.x); xSign = (int) Math.signum(dest.x - pos.x);
ySign = (int) Math.signum(dest.y - pos.y); ySign = (int) Math.signum(dest.y - pos.y);
} }
/** /**
@ -44,7 +44,9 @@ public class Move {
* @param xDest the horizontal destination of this move * @param xDest the horizontal destination of this move
* @param yDest the vertical destination of this move * @param yDest the vertical destination of this move
*/ */
public Move(int xPos, int yPos, int xDest, int yDest) { this(new Position(xPos, yPos), new Position(xDest, yDest)); } public Move(int xPos, int yPos, int xDest, int yDest) {
this(new Position(xPos, yPos), new Position(xDest, yDest));
}
/** /**
* Executed this move on a board. * Executed this move on a board.
@ -52,7 +54,8 @@ public class Move {
* @param board the board to execute this move on. * @param board the board to execute this move on.
*/ */
public void execute(Board board) { public void execute(Board board) {
// Move the piece to the move's destination square and clean the old position // Move the piece to the move's destination square and clean the old
// position
board.set(dest, board.get(pos)); board.set(dest, board.get(pos));
board.set(pos, null); board.set(pos, null);
} }
@ -61,11 +64,13 @@ public class Move {
* Reverts this move on a board. * Reverts this move on a board.
* *
* @param board the board to revert this move on * @param board the board to revert this move on
* @param capturedPiece the piece to place at the destination of this move (used * @param capturedPiece the piece to place at the destination of this move
* (used
* for reinstating captured pieces) * for reinstating captured pieces)
*/ */
public void revert(Board board, Piece capturedPiece) { public void revert(Board board, Piece capturedPiece) {
// Move the piece to the move's position square and clean the destination // Move the piece to the move's position square and clean the
// destination
board.set(pos, board.get(dest)); board.set(pos, board.get(dest));
board.set(dest, capturedPiece); board.set(dest, capturedPiece);
} }
@ -74,7 +79,9 @@ public class Move {
* @return a new move containing this move's destination as its position and * @return a new move containing this move's destination as its position and
* this move's position as its destination * this move's position as its destination
*/ */
public Move invert() { return new Move(dest, pos); } public Move invert() {
return new Move(dest, pos);
}
/** /**
* Constructs a move from a string representation in Long Algebraic Notation * Constructs a move from a string representation in Long Algebraic Notation
@ -84,16 +91,19 @@ public class Move {
* @return the constructed move * @return the constructed move
*/ */
public static Move fromLAN(String move) { public static Move fromLAN(String move) {
Position pos = Position.fromLAN(move.substring(0, 2)); Position pos = Position.fromLAN(move.substring(0, 2));
Position dest = Position.fromLAN(move.substring(2)); Position dest = Position.fromLAN(move.substring(2));
if (move.length() == 5) { if (move.length() == 5)
try { try {
return new PawnPromotion(pos, dest, Piece.fromFirstChar(move.charAt(4))); return new PawnPromotion(
pos,
dest,
Piece.fromFirstChar(move.charAt(4))
);
} catch (Exception e) { } catch (Exception e) {
e.printStackTrace(); e.printStackTrace();
return null; return null;
} }
}
return new Move(pos, dest); return new Move(pos, dest);
} }
@ -103,7 +113,9 @@ public class Move {
* *
* @return the LAN string * @return the LAN string
*/ */
public String toLAN() { return getPos().toLAN() + getDest().toLAN(); } public String toLAN() {
return getPos().toLAN() + getDest().toLAN();
}
/** /**
* Converts a move string from standard algebraic notation to a {@link Move} * Converts a move string from standard algebraic notation to a {@link Move}
@ -115,75 +127,125 @@ public class Move {
*/ */
public static Move fromSAN(String sanMove, Board board) { public static Move fromSAN(String sanMove, Board board) {
Map<String, Pattern> patterns = new HashMap<>(); Map<String, Pattern> patterns = new HashMap<>();
patterns.put("pieceMove", patterns.put(
Pattern.compile( "pieceMove",
"^(?<pieceType>[NBRQK])(?:(?<fromFile>[a-h])|(?<fromRank>[1-8])|(?<fromSquare>[a-h][1-8]))?x?(?<toSquare>[a-h][1-8])(?:\\+{0,2}|\\#)$")); Pattern.compile(
patterns.put("pawnCapture", "^(?<pieceType>[NBRQK])(?:(?<fromFile>[a-h])|(?<fromRank>[1-8])|(?<fromSquare>[a-h][1-8]))?x?(?<toSquare>[a-h][1-8])(?:\\+{0,2}|\\#)$"
Pattern.compile("^(?<fromFile>[a-h])(?<fromRank>[1-8])?x(?<toSquare>[a-h][1-8])(?<promotedTo>[NBRQ])?(?:\\+{0,2}|\\#)?$")); )
patterns.put("pawnPush", Pattern.compile("^(?<toSquare>[a-h][1-8])(?<promotedTo>[NBRQ])?(?:\\+{0,2}|\\#)$")); );
patterns.put("castling", Pattern.compile("^(?<queenside>O-O-O)|(?<kingside>O-O)(?:\\+{0,2}|\\#)?$")); patterns.put(
"pawnCapture",
Pattern.compile(
"^(?<fromFile>[a-h])(?<fromRank>[1-8])?x(?<toSquare>[a-h][1-8])(?<promotedTo>[NBRQ])?(?:\\+{0,2}|\\#)?$"
)
);
patterns.put(
"pawnPush",
Pattern.compile(
"^(?<toSquare>[a-h][1-8])(?<promotedTo>[NBRQ])?(?:\\+{0,2}|\\#)$"
)
);
patterns.put(
"castling",
Pattern.compile(
"^(?<queenside>O-O-O)|(?<kingside>O-O)(?:\\+{0,2}|\\#)?$"
)
);
for (Map.Entry<String, Pattern> entry : patterns.entrySet()) { for (Map.Entry<String, Pattern> entry : patterns.entrySet()) {
Matcher m = entry.getValue().matcher(sanMove); Matcher m = entry.getValue().matcher(sanMove);
if (m.find()) { if (m.find()) {
Position pos = null, dest = null; Position pos = null, dest = null;
Move move = null; Move move = null;
switch (entry.getKey()) { switch (entry.getKey()) {
case "pieceMove": case "pieceMove":
dest = Position.fromLAN(m.group("toSquare")); dest = Position.fromLAN(m.group("toSquare"));
if (m.group("fromSquare") != null) pos = Position.fromLAN(m.group("fromSquare")); if (m.group("fromSquare") != null)
pos = Position.fromLAN(m.group("fromSquare"));
else { else {
Class<? extends Piece> pieceClass = Piece.fromFirstChar(m.group("pieceType").charAt(0)); Class<? extends Piece> pieceClass = Piece
char file; .fromFirstChar(m.group("pieceType").charAt(0));
int rank; char file;
int rank;
if (m.group("fromFile") != null) { if (m.group("fromFile") != null) {
file = m.group("fromFile").charAt(0); file = m.group("fromFile").charAt(0);
rank = board.get(pieceClass, file); rank = board.get(pieceClass, file);
pos = Position.fromLAN(String.format("%c%d", file, rank)); pos = Position
} else if (m.group("fromRank") != null) { .fromLAN(String.format("%c%d", file, rank));
rank = Integer.parseInt(m.group("fromRank").substring(0, 1)); } else
file = board.get(pieceClass, rank); if (m.group("fromRank") != null) {
pos = Position.fromLAN(String.format("%c%d", file, rank)); rank = Integer.parseInt(
} else pos = board.get(pieceClass, dest); m.group("fromRank").substring(0, 1)
);
file = board.get(pieceClass, rank);
pos = Position.fromLAN(
String.format("%c%d", file, rank)
);
} else
pos = board.get(pieceClass, dest);
} }
move = new Move(pos, dest); move = new Move(pos, dest);
break; break;
case "pawnCapture": case "pawnCapture":
char file = m.group("fromFile").charAt(0); char file = m.group("fromFile").charAt(0);
int rank = m.group("fromRank") == null ? board.get(Pawn.class, file) : Integer.parseInt(m.group("fromRank")); int rank = m.group("fromRank") == null
? board.get(Pawn.class, file)
: Integer.parseInt(m.group("fromRank"));
dest = Position.fromLAN(m.group("toSquare")); dest = Position.fromLAN(m.group("toSquare"));
pos = Position.fromLAN(String.format("%c%d", file, rank)); pos = Position
.fromLAN(String.format("%c%d", file, rank));
if (m.group("promotedTo") != null) { if (m.group("promotedTo") != null)
try { try {
move = new PawnPromotion(pos, dest, Piece.fromFirstChar(m.group("promotedTo").charAt(0))); move = new PawnPromotion(
pos,
dest,
Piece.fromFirstChar(m.group("promotedTo").charAt(0))
);
} catch (Exception e) { } catch (Exception e) {
e.printStackTrace(); e.printStackTrace();
} }
} else move = new Move(pos, dest); else
move = new Move(pos, dest);
break; break;
case "pawnPush": case "pawnPush":
dest = Position.fromLAN(m.group("toSquare")); dest = Position.fromLAN(m.group("toSquare"));
int step = board.getLog().getActiveColor() == Color.WHITE ? 1 : -1; int step
= board.getLog().getActiveColor() == Color.WHITE ? 1
: -1;
// One step forward // One step forward
if (board.getBoardArr()[dest.x][dest.y + step] != null) pos = new Position(dest.x, dest.y + step); if (board.getBoardArr()[dest.x][dest.y + step] != null)
pos = new Position(dest.x, dest.y + step);
// Double step forward // Double step forward
else pos = new Position(dest.x, dest.y + 2 * step); else
pos = new Position(dest.x, dest.y + 2 * step);
if (m.group("promotedTo") != null) { if (m.group("promotedTo") != null)
try { try {
move = new PawnPromotion(pos, dest, Piece.fromFirstChar(m.group("promotedTo").charAt(0))); move = new PawnPromotion(
pos,
dest,
Piece.fromFirstChar(m.group("promotedTo").charAt(0))
);
} catch (Exception e) { } catch (Exception e) {
e.printStackTrace(); e.printStackTrace();
} }
} else move = new Move(pos, dest); else
move = new Move(pos, dest);
break; break;
case "castling": case "castling":
pos = new Position(4, board.getLog().getActiveColor() == Color.WHITE ? 7 : 0); pos = new Position(
dest = new Position(m.group("kingside") != null ? 6 : 2, pos.y); 4,
board.getLog().getActiveColor() == Color.WHITE ? 7
: 0
);
dest = new Position(
m.group("kingside") != null ? 6 : 2,
pos.y
);
move = new Castling(pos, dest); move = new Castling(pos, dest);
break; break;
} }
@ -194,26 +256,30 @@ public class Move {
} }
/** /**
* Generates a string representation of this move in Standard Algebraic Notation * Generates a string representation of this move in Standard Algebraic
* Notation
* (SAN). * (SAN).
* *
* @param board the {@link Board} providing the context of this move * @param board the {@link Board} providing the context of this move
* @return the SAN string * @return the SAN string
*/ */
public String toSAN(Board board) { public String toSAN(Board board) {
final Piece piece = board.get(pos); final Piece piece = board.get(pos);
StringBuilder sb = new StringBuilder(8); StringBuilder sb = new StringBuilder(8);
// Piece symbol // Piece symbol
if (!(piece instanceof Pawn)) sb.append(Character.toUpperCase(piece.firstChar())); if (!(piece instanceof Pawn))
sb.append(Character.toUpperCase(piece.firstChar()));
// Position // Position
// TODO: Deconstruct position into optional file or rank // TODO: Deconstruct position into optional file or rank
// Omit position if the move is a pawn push // Omit position if the move is a pawn push
if (!(piece instanceof Pawn && xDist == 0)) sb.append(pos.toLAN()); if (!(piece instanceof Pawn && xDist == 0))
sb.append(pos.toLAN());
// Capture indicator // Capture indicator
if (board.get(dest) != null) sb.append('x'); if (board.get(dest) != null)
sb.append('x');
// Destination // Destination
sb.append(dest.toLAN()); sb.append(dest.toLAN());
@ -237,19 +303,35 @@ public class Move {
public boolean isDiagonal() { return getxDist() == getyDist(); } public boolean isDiagonal() { return getxDist() == getyDist(); }
@Override @Override
public String toString() { return toLAN(); } public String toString() {
return toLAN();
}
@Override @Override
public int hashCode() { return Objects.hash(getDest(), getPos(), getxDist(), getxSign(), getyDist(), getySign()); } public int hashCode() {
return Objects.hash(
getDest(),
getPos(),
getxDist(),
getxSign(),
getyDist(),
getySign()
);
}
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (obj == null) return false; return true;
if (getClass() != obj.getClass()) return false; if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Move other = (Move) obj; Move other = (Move) obj;
return Objects.equals(getDest(), other.getDest()) && Objects.equals(getPos(), other.getPos()) && getxDist() == other.getxDist() return Objects.equals(getDest(), other.getDest()) && Objects
&& getxSign() == other.getxSign() && getyDist() == other.getyDist() && getySign() == other.getySign(); .equals(getPos(), other.getPos()) && getxDist() == other.getxDist()
&& getxSign() == other.getxSign() && getyDist() == other.getyDist()
&& getySign() == other.getySign();
} }
/** /**
@ -265,20 +347,28 @@ public class Move {
/** /**
* @return the x distance * @return the x distance
*/ */
public int getxDist() { return xDist; } public int getxDist() {
return xDist;
}
/** /**
* @return the y distance * @return the y distance
*/ */
public int getyDist() { return yDist; } public int getyDist() {
return yDist;
}
/** /**
* @return the sign of the x distance * @return the sign of the x distance
*/ */
public int getxSign() { return xSign; } public int getxSign() {
return xSign;
}
/** /**
* @return the sign of the y distance * @return the sign of the y distance
*/ */
public int getySign() { return ySign; } public int getySign() {
return ySign;
}
} }

113
src/dev/kske/chess/board/MoveNode.java
View File

@ -70,31 +70,38 @@ public class MoveNode {
*/ */
public final int halfmoveClock; public final int halfmoveClock;
private MoveNode parent; private MoveNode parent;
private List<MoveNode> variations; private List<MoveNode> variations;
/** /**
* Creates a new {@link MoveNode}. * Creates a new {@link MoveNode}.
* *
* @param move the logged {@link Move} * @param move the logged {@link Move}
* @param capturedPiece the {@link Piece} captures by the logged {@link Move} * @param capturedPiece the {@link Piece} captures by the logged
* {@link Move}
* @param castlingRights the castling rights present during the move * @param castlingRights the castling rights present during the move
* @param enPassant the en passant {@link Position} valid after the logged * @param enPassant the en passant {@link Position} valid after the
* logged
* {@link Move}, or {@code null} if there is none * {@link Move}, or {@code null} if there is none
* @param activeColor the {@link Color} active after the logged {@link Move} * @param activeColor the {@link Color} active after the logged
* {@link Move}
* @param fullmoveCounter the number of moves made until the current move * @param fullmoveCounter the number of moves made until the current move
* @param halfmoveClock the number of halfmoves since the last capture move or * @param halfmoveClock the number of halfmoves since the last capture
* move or
* pawn move * pawn move
*/ */
public MoveNode(Move move, Piece capturedPiece, boolean castlingRights[], Position enPassant, Color activeColor, int fullmoveCounter, public MoveNode(
int halfmoveClock) { Move move, Piece capturedPiece, boolean castlingRights[],
this.move = move; Position enPassant, Color activeColor, int fullmoveCounter,
this.capturedPiece = capturedPiece; int halfmoveClock
this.castlingRights = castlingRights; ) {
this.enPassant = enPassant; this.move = move;
this.activeColor = activeColor; this.capturedPiece = capturedPiece;
this.fullmoveCounter = fullmoveCounter; this.castlingRights = castlingRights;
this.halfmoveClock = halfmoveClock; this.enPassant = enPassant;
this.activeColor = activeColor;
this.fullmoveCounter = fullmoveCounter;
this.halfmoveClock = halfmoveClock;
} }
/** /**
@ -106,10 +113,18 @@ public class MoveNode {
* considers subsequent variations * considers subsequent variations
*/ */
public MoveNode(MoveNode other, boolean copyVariations) { public MoveNode(MoveNode other, boolean copyVariations) {
this(other.move, other.capturedPiece, other.castlingRights.clone(), other.enPassant, other.activeColor, other.fullmoveCounter, this(
other.halfmoveClock); other.move,
other.capturedPiece,
other.castlingRights.clone(),
other.enPassant,
other.activeColor,
other.fullmoveCounter,
other.halfmoveClock
);
if (copyVariations && other.variations != null) { if (copyVariations && other.variations != null) {
if (variations == null) variations = new ArrayList<>(); if (variations == null)
variations = new ArrayList<>();
for (MoveNode variation : other.variations) { for (MoveNode variation : other.variations) {
MoveNode copy = new MoveNode(variation, true); MoveNode copy = new MoveNode(variation, true);
copy.parent = this; copy.parent = this;
@ -124,7 +139,8 @@ public class MoveNode {
* @param variation The {@link MoveNode} to append to this {@link MoveNode} * @param variation The {@link MoveNode} to append to this {@link MoveNode}
*/ */
public void addVariation(MoveNode variation) { public void addVariation(MoveNode variation) {
if (variations == null) variations = new ArrayList<>(); if (variations == null)
variations = new ArrayList<>();
if (!variations.contains(variation)) { if (!variations.contains(variation)) {
variations.add(variation); variations.add(variation);
variation.parent = this; variation.parent = this;
@ -139,7 +155,9 @@ public class MoveNode {
/** /**
* @return {@code true} if this move node has any variations * @return {@code true} if this move node has any variations
*/ */
public boolean hasVariations() { return variations != null && variations.size() > 0; } public boolean hasVariations() {
return variations != null && variations.size() > 0;
}
/** /**
* @return the parent node of this move node * @return the parent node of this move node
@ -156,37 +174,54 @@ public class MoveNode {
/** /**
* @return {@code true} if this move node has a parent * @return {@code true} if this move node has a parent
*/ */
public boolean hasParent() { return parent != null; } public boolean hasParent() {
return parent != null;
}
@Override @Override
public String toString() { public String toString() {
return String.format("MoveNode[move=%s,capturedPiece=%s,castlingRights=%s,enPassant=%s,activeColor=%s,fullmoveCounter=%d,halfmoveClock=%d]", return String.format(
move, "MoveNode[move=%s,capturedPiece=%s,castlingRights=%s,enPassant=%s,activeColor=%s,fullmoveCounter=%d,halfmoveClock=%d]",
capturedPiece, move,
Arrays.toString(castlingRights), capturedPiece,
enPassant, Arrays.toString(castlingRights),
activeColor, enPassant,
fullmoveCounter, activeColor,
halfmoveClock); fullmoveCounter,
halfmoveClock
);
} }
@Override @Override
public int hashCode() { public int hashCode() {
final int prime = 31; final int prime = 31;
int result = 1; int result = 1;
result = prime * result + Arrays.hashCode(castlingRights); result = prime * result + Arrays.hashCode(castlingRights);
result = prime * result + Objects.hash(activeColor, capturedPiece, enPassant, fullmoveCounter, halfmoveClock, move); result = prime * result + Objects.hash(
activeColor,
capturedPiece,
enPassant,
fullmoveCounter,
halfmoveClock,
move
);
return result; return result;
} }
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (obj == null) return false; return true;
if (getClass() != obj.getClass()) return false; if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
MoveNode other = (MoveNode) obj; MoveNode other = (MoveNode) obj;
return activeColor == other.activeColor && Objects.equals(capturedPiece, other.capturedPiece) return activeColor == other.activeColor
&& Arrays.equals(castlingRights, other.castlingRights) && Objects.equals(enPassant, other.enPassant) && Objects.equals(capturedPiece, other.capturedPiece)
&& fullmoveCounter == other.fullmoveCounter && halfmoveClock == other.halfmoveClock && Objects.equals(move, other.move); && Arrays.equals(castlingRights, other.castlingRights) && Objects.equals(enPassant, other.enPassant)
&& fullmoveCounter == other.fullmoveCounter
&& halfmoveClock == other.halfmoveClock
&& Objects.equals(move, other.move);
} }
} }

91
src/dev/kske/chess/board/Pawn.java
View File

@ -19,62 +19,101 @@ public class Pawn extends Piece {
* @param color the color of this pawn * @param color the color of this pawn
* @param board the board on which this pawn will be placed * @param board the board on which this pawn will be placed
*/ */
public Pawn(Color color, Board board) { super(color, board); } public Pawn(Color color, Board board) {
super(color, board);
}
@Override @Override
public boolean isValidMove(Move move) { public boolean isValidMove(Move move) {
boolean step = move.isVertical() && move.getyDist() == 1; boolean step = move.isVertical() && move.getyDist() == 1;
boolean doubleStep = move.isVertical() && move.getyDist() == 2; boolean doubleStep = move.isVertical() && move.getyDist() == 2;
boolean strafe = move.isDiagonal() && move.getxDist() == 1; boolean strafe = move.isDiagonal() && move.getxDist() == 1;
boolean enPassant = strafe && move.getDest().equals(board.getLog().getEnPassant()); boolean enPassant
if (getColor() == Color.WHITE) doubleStep &= move.getPos().y == 6; = strafe && move.getDest().equals(board.getLog().getEnPassant());
else doubleStep &= move.getPos().y == 1; if (getColor() == Color.WHITE)
doubleStep &= move.getPos().y == 6;
else
doubleStep &= move.getPos().y == 1;
return enPassant || (step ^ doubleStep ^ strafe) && move.getySign() == (getColor() == Color.WHITE ? -1 : 1) && isFreePath(move); return enPassant || step ^ doubleStep ^ strafe
&& move.getySign() == (getColor() == Color.WHITE ? -1 : 1)
&& isFreePath(move);
} }
@Override @Override
protected boolean isFreePath(Move move) { protected boolean isFreePath(Move move) {
// Two steps forward // Two steps forward
if (move.getyDist() == 2) if (move.getyDist() == 2)
return board.getBoardArr()[move.getPos().x][move.getDest().y - move.getySign()] == null && board.getDest(move) == null; return board.getBoardArr()[move.getPos().x][move.getDest().y
- move.getySign()] == null && board.getDest(move) == null;
// One step forward // One step forward
else if (move.getxDist() == 0) return board.getDest(move) == null; else
// Capture move if (move.getxDist() == 0)
else return board.getDest(move) != null && board.getDest(move).getColor() != getColor(); return board.getDest(move) == null;
// Capture move
else
return board.getDest(move) != null
&& board.getDest(move).getColor() != getColor();
} }
@Override @Override
protected List<Move> getPseudolegalMoves(Position pos) { protected List<Move> getPseudolegalMoves(Position pos) {
List<Move> moves = new ArrayList<>(); List<Move> moves = new ArrayList<>();
int sign = getColor() == Color.WHITE ? -1 : 1; int sign = getColor() == Color.WHITE ? -1 : 1;
boolean pawnPromotion = sign == 1 && pos.y == 6 || sign == -1 && pos.y == 1; boolean pawnPromotion
= sign == 1 && pos.y == 6 || sign == -1 && pos.y == 1;
// Strafe left // Strafe left
if (pos.x > 0) addMoveIfValid(moves, pos, new Position(pos.x - 1, pos.y + sign), pawnPromotion); if (pos.x > 0)
addMoveIfValid(
moves,
pos,
new Position(pos.x - 1, pos.y + sign),
pawnPromotion
);
// Strafe right // Strafe right
if (pos.x < 7) addMoveIfValid(moves, pos, new Position(pos.x + 1, pos.y + sign), pawnPromotion); if (pos.x < 7)
addMoveIfValid(
moves,
pos,
new Position(pos.x + 1, pos.y + sign),
pawnPromotion
);
// Step forward // Step forward
if (sign == 1 && pos.y < 7 || sign == -1 && pos.y > 0) addMoveIfValid(moves, pos, new Position(pos.x, pos.y + sign), pawnPromotion); if (sign == 1 && pos.y < 7 || sign == -1 && pos.y > 0)
addMoveIfValid(
moves,
pos,
new Position(pos.x, pos.y + sign),
pawnPromotion
);
// Double step forward // Double step forward
if (sign == 1 && pos.y == 1 || sign == -1 && pos.y == 6) addMoveIfValid(moves, pos, new Position(pos.x, pos.y + 2 * sign), pawnPromotion); if (sign == 1 && pos.y == 1 || sign == -1 && pos.y == 6)
addMoveIfValid(
moves,
pos,
new Position(pos.x, pos.y + 2 * sign),
pawnPromotion
);
// Add en passant move if necessary // Add en passant move if necessary
if (board.getLog().getEnPassant() != null) { if (board.getLog().getEnPassant() != null) {
Move move = new EnPassant(pos, board.getLog().getEnPassant()); Move move = new EnPassant(pos, board.getLog().getEnPassant());
if (move.isDiagonal() && move.getxDist() == 1) moves.add(move); if (move.isDiagonal() && move.getxDist() == 1)
moves.add(move);
} }
return moves; return moves;
} }
private void addMoveIfValid(List<Move> moves, Position pos, Position dest, boolean pawnPromotion) { private void addMoveIfValid(
List<Move> moves, Position pos, Position dest, boolean pawnPromotion
) {
Move move = new Move(pos, dest); Move move = new Move(pos, dest);
if (isFreePath(move)) { if (isFreePath(move))
if (pawnPromotion) { if (pawnPromotion)
try { try {
moves.add(new PawnPromotion(pos, dest, Queen.class)); moves.add(new PawnPromotion(pos, dest, Queen.class));
moves.add(new PawnPromotion(pos, dest, Rook.class)); moves.add(new PawnPromotion(pos, dest, Rook.class));
@ -83,8 +122,8 @@ public class Pawn extends Piece {
} catch (Exception e) { } catch (Exception e) {
e.printStackTrace(); e.printStackTrace();
} }
} else moves.add(move); else
} moves.add(move);
} }
@Override @Override

67
src/dev/kske/chess/board/PawnPromotion.java
View File

@ -16,8 +16,8 @@ import dev.kske.chess.board.Piece.Color;
*/ */
public class PawnPromotion extends Move { public class PawnPromotion extends Move {
private final Constructor<? extends Piece> promotionPieceConstructor; private final Constructor<? extends Piece> promotionPieceConstructor;
private final char promotionPieceChar; private final char promotionPieceChar;
/** /**
* Initializes a pawn promotion move. * Initializes a pawn promotion move.
@ -26,26 +26,28 @@ public class PawnPromotion extends Move {
* @param dest the destination of this move * @param dest the destination of this move
* @param promotionPieceClass the class of the piece to which the pawn is * @param promotionPieceClass the class of the piece to which the pawn is
* promoted * promoted
*
* @throws ReflectiveOperationException if the promotion piece could not be * @throws ReflectiveOperationException if the promotion piece could not be
* instantiated * instantiated
* @throws RuntimeException if the promotion piece could not be * @throws RuntimeException if the promotion piece could not be
* instantiated * instantiated
*/ */
public PawnPromotion(Position pos, Position dest, Class<? extends Piece> promotionPieceClass) public PawnPromotion(
throws ReflectiveOperationException, RuntimeException { Position pos, Position dest, Class<? extends Piece> promotionPieceClass
)
throws ReflectiveOperationException, RuntimeException {
super(pos, dest); super(pos, dest);
// Cache piece constructor // Cache piece constructor
promotionPieceConstructor = promotionPieceClass.getDeclaredConstructor(Color.class, Board.class); promotionPieceConstructor = promotionPieceClass
.getDeclaredConstructor(Color.class, Board.class);
promotionPieceConstructor.setAccessible(true); promotionPieceConstructor.setAccessible(true);
// Get piece char // Get piece char
promotionPieceChar = (char) promotionPieceClass.getMethod("firstChar").invoke(promotionPieceConstructor.newInstance(null, null)); promotionPieceChar = (char) promotionPieceClass.getMethod("firstChar")
.invoke(promotionPieceConstructor.newInstance(null, null));
} }
/** /**
*
* Creates an instance of {@link PawnPromotion}. * Creates an instance of {@link PawnPromotion}.
* *
* @param xPos the horizontal position of this move * @param xPos the horizontal position of this move
@ -59,17 +61,33 @@ public class PawnPromotion extends Move {
* @throws RuntimeException if the promotion piece could not be * @throws RuntimeException if the promotion piece could not be
* instantiated * instantiated
*/ */
public PawnPromotion(int xPos, int yPos, int xDest, int yDest, Class<? extends Piece> promotionPieceClass) public PawnPromotion(
throws ReflectiveOperationException, RuntimeException { int xPos, int yPos, int xDest, int yDest,
this(new Position(xPos, yPos), new Position(xDest, yDest), promotionPieceClass); Class<? extends Piece> promotionPieceClass
)
throws ReflectiveOperationException, RuntimeException {
this(
new Position(xPos, yPos),
new Position(xDest, yDest),
promotionPieceClass
);
} }
@Override @Override
public void execute(Board board) { public void execute(Board board) {
try { try {
board.set(pos, promotionPieceConstructor.newInstance(board.get(pos).getColor(), board)); board.set(
pos,
promotionPieceConstructor.newInstance(board.get(pos).getColor(), board)
);
super.execute(board); super.execute(board);
} catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | SecurityException e) { } catch (
InstantiationException
| IllegalAccessException
| IllegalArgumentException
| InvocationTargetException
| SecurityException e
) {
e.printStackTrace(); e.printStackTrace();
} }
} }
@ -81,7 +99,9 @@ public class PawnPromotion extends Move {
} }
@Override @Override
public String toLAN() { return pos.toLAN() + dest.toLAN() + promotionPieceChar; } public String toLAN() {
return pos.toLAN() + dest.toLAN() + promotionPieceChar;
}
@Override @Override
public String toSAN(Board board) { public String toSAN(Board board) {
@ -91,18 +111,23 @@ public class PawnPromotion extends Move {
@Override @Override
public int hashCode() { public int hashCode() {
final int prime = 31; final int prime = 31;
int result = super.hashCode(); int result = super.hashCode();
result = prime * result + Objects.hash(promotionPieceChar, promotionPieceConstructor); result = prime * result
+ Objects.hash(promotionPieceChar, promotionPieceConstructor);
return result; return result;
} }
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (!super.equals(obj)) return false; return true;
if (!(obj instanceof PawnPromotion)) return false; if (!super.equals(obj))
return false;
if (!(obj instanceof PawnPromotion))
return false;
PawnPromotion other = (PawnPromotion) obj; PawnPromotion other = (PawnPromotion) obj;
return promotionPieceChar == other.promotionPieceChar && Objects.equals(promotionPieceConstructor, other.promotionPieceConstructor); return promotionPieceChar == other.promotionPieceChar && Objects
.equals(promotionPieceConstructor, other.promotionPieceConstructor);
} }
} }

76
src/dev/kske/chess/board/Piece.java
View File

@ -16,8 +16,8 @@ import java.util.Objects;
*/ */
public abstract class Piece implements Cloneable { public abstract class Piece implements Cloneable {
private final Color color; private final Color color;
protected Board board; protected Board board;
/** /**
* Initializes a piece. * Initializes a piece.
@ -26,8 +26,8 @@ public abstract class Piece implements Cloneable {
* @param board the board on which this piece is placed * @param board the board on which this piece is placed
*/ */
public Piece(Color color, Board board) { public Piece(Color color, Board board) {
this.color = color; this.color = color;
this.board = board; this.board = board;
} }
/** /**
@ -41,7 +41,8 @@ public abstract class Piece implements Cloneable {
for (Iterator<Move> iterator = moves.iterator(); iterator.hasNext();) { for (Iterator<Move> iterator = moves.iterator(); iterator.hasNext();) {
Move move = iterator.next(); Move move = iterator.next();
board.move(move); board.move(move);
if (board.checkCheck(getColor())) iterator.remove(); if (board.checkCheck(getColor()))
iterator.remove();
board.revert(); board.revert();
} }
return moves; return moves;
@ -64,16 +65,23 @@ public abstract class Piece implements Cloneable {
public abstract boolean isValidMove(Move move); public abstract boolean isValidMove(Move move);
/** /**
* Checks, if the squares between the position and the destination of a move are * Checks, if the squares between the position and the destination of a move
* are
* free. * free.
* *
* @param move The move to check * @param move The move to check
* @return {@true} if the path is free * @return {@true} if the path is free
*/ */
protected boolean isFreePath(Move move) { protected boolean isFreePath(Move move) {
for (int i = move.getPos().x + move.getxSign(), j = move.getPos().y + move.getySign(); i != move.getDest().x for (
|| j != move.getDest().y; i += move.getxSign(), j += move.getySign()) int i = move.getPos().x + move.getxSign(), j
if (board.getBoardArr()[i][j] != null) return false; = move.getPos().y + move.getySign();
i != move.getDest().x
|| j != move.getDest().y;
i += move.getxSign(), j += move.getySign()
)
if (board.getBoardArr()[i][j] != null)
return false;
return checkDestination(move); return checkDestination(move);
} }
@ -84,7 +92,10 @@ public abstract class Piece implements Cloneable {
* @param move The move to check * @param move The move to check
* @return {@code false} if the move's destination is from the same team * @return {@code false} if the move's destination is from the same team
*/ */
protected final boolean checkDestination(Move move) { return board.getDest(move) == null || board.getDest(move).getColor() != getColor(); } protected final boolean checkDestination(Move move) {
return board.getDest(move) == null
|| board.getDest(move).getColor() != getColor();
}
@Override @Override
public Object clone() { public Object clone() {
@ -98,35 +109,47 @@ public abstract class Piece implements Cloneable {
} }
@Override @Override
public String toString() { return String.format("%s[color=%s]", getClass().getSimpleName(), color); } public String toString() {
return String.format("%s[color=%s]", getClass().getSimpleName(), color);
}
@Override @Override
public int hashCode() { return Objects.hash(color); } public int hashCode() {
return Objects.hash(color);
}
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (obj == null) return false; return true;
if (getClass() != obj.getClass()) return false; if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Piece other = (Piece) obj; Piece other = (Piece) obj;
return color == other.color; return color == other.color;
} }
/** /**
* @return the standard value of this {@link Piece} that can be used for board * @return the standard value of this {@link Piece} that can be used for
* board
* evaluation * evaluation
*/ */
public abstract int getValue(); public abstract int getValue();
/** /**
* @return The first character of this {@link Piece} in algebraic notation and * @return The first character of this {@link Piece} in algebraic notation
* and
* lower case * lower case
*/ */
public char firstChar() { return Character.toLowerCase(getClass().getSimpleName().charAt(0)); } public char firstChar() {
return Character.toLowerCase(getClass().getSimpleName().charAt(0));
}
/** /**
* @param firstChar the first character of a piece's name * @param firstChar the first character of a piece's name
* @return the class of the piece associated with that character or {@code null} * @return the class of the piece associated with that character or
* {@code null}
* if no piece is associated with the given character * if no piece is associated with the given character
*/ */
public static Class<? extends Piece> fromFirstChar(char firstChar) { public static Class<? extends Piece> fromFirstChar(char firstChar) {
@ -175,19 +198,26 @@ public abstract class Piece implements Cloneable {
/** /**
* @param c the first character of a color's name * @param c the first character of a color's name
* @return {@code WHITE} if the character is {@code w} or {@code W}, else * @return {@code WHITE} if the character is {@code w} or {@code W},
* else
* {@code BLACK} * {@code BLACK}
*/ */
public static Color fromFirstChar(char c) { return Character.toLowerCase(c) == 'w' ? WHITE : BLACK; } public static Color fromFirstChar(char c) {
return Character.toLowerCase(c) == 'w' ? WHITE : BLACK;
}
/** /**
* @return the first character (lower case) of this color * @return the first character (lower case) of this color
*/ */
public char firstChar() { return this == WHITE ? 'w' : 'b'; } public char firstChar() {
return this == WHITE ? 'w' : 'b';
}
/** /**
* @return the opposite of this color * @return the opposite of this color
*/ */
public Color opposite() { return this == WHITE ? BLACK : WHITE; } public Color opposite() {
return this == WHITE ? BLACK : WHITE;
}
} }
} }

42
src/dev/kske/chess/board/Position.java
View File

@ -27,8 +27,8 @@ public class Position {
* @param y the vertical component of this position * @param y the vertical component of this position
*/ */
public Position(int x, int y) { public Position(int x, int y) {
this.x = x; this.x = x;
this.y = y; this.y = y;
} }
/** /**
@ -37,35 +37,49 @@ public class Position {
* @param pos the LAN string to construct a position from * @param pos the LAN string to construct a position from
* @return the position constructed from LAN * @return the position constructed from LAN
*/ */
public static Position fromLAN(String pos) { return new Position(pos.charAt(0) - 97, 8 - Character.getNumericValue(pos.charAt(1))); } public static Position fromLAN(String pos) {
return new Position(
pos.charAt(0) - 97,
8 - Character.getNumericValue(pos.charAt(1))
);
}
/** /**
* Converts this position to Long Algebraic Notation (LAN) * Converts this position to Long Algebraic Notation (LAN)
* *
* @return a LAN string representing this position * @return a LAN string representing this position
*/ */
public String toLAN() { return String.valueOf((char) (x + 97)) + String.valueOf(8 - y); } public String toLAN() {
return String.valueOf((char) (x + 97)) + String.valueOf(8 - y);
}
@Override @Override
public String toString() { return String.format("[%d, %d]", x, y); } public String toString() {
return String.format("[%d, %d]", x, y);
}
@Override @Override
public int hashCode() { public int hashCode() {
final int prime = 31; final int prime = 31;
int result = 1; int result = 1;
result = prime * result + x; result = prime * result + x;
result = prime * result + y; result = prime * result + y;
return result; return result;
} }
@Override @Override
public boolean equals(Object obj) { public boolean equals(Object obj) {
if (this == obj) return true; if (this == obj)
if (obj == null) return false; return true;
if (getClass() != obj.getClass()) return false; if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Position other = (Position) obj; Position other = (Position) obj;
if (x != other.x) return false; if (x != other.x)
if (y != other.y) return false; return false;
if (y != other.y)
return false;
return true; return true;
} }
} }

98
src/dev/kske/chess/board/Queen.java
View File

@ -25,7 +25,8 @@ public class Queen extends Piece {
@Override @Override
public boolean isValidMove(Move move) { public boolean isValidMove(Move move) {
return ((move.isHorizontal() || move.isVertical()) || move.isDiagonal()) && isFreePath(move); return (move.isHorizontal() || move.isVertical() || move.isDiagonal())
&& isFreePath(move);
} }
@Override @Override
@ -35,73 +36,106 @@ public class Queen extends Piece {
// Horizontal moves to the right // Horizontal moves to the right
for (int i = pos.x + 1; i < 8; i++) { for (int i = pos.x + 1; i < 8; i++) {
Move move = new Move(pos, new Position(i, pos.y)); Move move = new Move(pos, new Position(i, pos.y));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Horizontal moves to the left // Horizontal moves to the left
for (int i = pos.x - 1; i >= 0; i--) { for (int i = pos.x - 1; i >= 0; i--) {
Move move = new Move(pos, new Position(i, pos.y)); Move move = new Move(pos, new Position(i, pos.y));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Vertical moves to the top // Vertical moves to the top
for (int i = pos.y - 1; i >= 0; i--) { for (int i = pos.y - 1; i >= 0; i--) {
Move move = new Move(pos, new Position(pos.x, i)); Move move = new Move(pos, new Position(pos.x, i));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Vertical moves to the bottom // Vertical moves to the bottom
for (int i = pos.y + 1; i < 8; i++) { for (int i = pos.y + 1; i < 8; i++) {
Move move = new Move(pos, new Position(pos.x, i)); Move move = new Move(pos, new Position(pos.x, i));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the lower right // Diagonal moves to the lower right
for (int i = pos.x + 1, j = pos.y + 1; i < 8 && j < 8; i++, j++) { for (int i = pos.x + 1, j = pos.y + 1; i < 8 && j < 8; i++, j++) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the lower left // Diagonal moves to the lower left
for (int i = pos.x - 1, j = pos.y + 1; i >= 0 && j < 8; i--, j++) { for (int i = pos.x - 1, j = pos.y + 1; i >= 0 && j < 8; i--, j++) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the upper right // Diagonal moves to the upper right
for (int i = pos.x + 1, j = pos.y - 1; i < 8 && j >= 0; i++, j--) { for (int i = pos.x + 1, j = pos.y - 1; i < 8 && j >= 0; i++, j--) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Diagonal moves to the upper left // Diagonal moves to the upper left
for (int i = pos.x - 1, j = pos.y - 1; i >= 0 && j >= 0; i--, j--) { for (int i = pos.x - 1, j = pos.y - 1; i >= 0 && j >= 0; i--, j--) {
Move move = new Move(pos, new Position(i, j)); Move move = new Move(pos, new Position(i, j));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
return moves; return moves;
} }

47
src/dev/kske/chess/board/Rook.java
View File

@ -35,37 +35,54 @@ public class Rook extends Piece {
// Horizontal moves to the right // Horizontal moves to the right
for (int i = pos.x + 1; i < 8; i++) { for (int i = pos.x + 1; i < 8; i++) {
Move move = new Move(pos, new Position(i, pos.y)); Move move = new Move(pos, new Position(i, pos.y));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Horizontal moves to the left // Horizontal moves to the left
for (int i = pos.x - 1; i >= 0; i--) { for (int i = pos.x - 1; i >= 0; i--) {
Move move = new Move(pos, new Position(i, pos.y)); Move move = new Move(pos, new Position(i, pos.y));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Vertical moves to the top // Vertical moves to the top
for (int i = pos.y - 1; i >= 0; i--) { for (int i = pos.y - 1; i >= 0; i--) {
Move move = new Move(pos, new Position(pos.x, i)); Move move = new Move(pos, new Position(pos.x, i));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
// Vertical moves to the bottom // Vertical moves to the bottom
for (int i = pos.y + 1; i < 8; i++) { for (int i = pos.y + 1; i < 8; i++) {
Move move = new Move(pos, new Position(pos.x, i)); Move move = new Move(pos, new Position(pos.x, i));
if (board.getDest(move) == null || board.getDest(move).getColor() != getColor()) { if (
board.getDest(move) == null
|| board.getDest(move).getColor() != getColor()
) {
moves.add(move); moves.add(move);
if (board.getDest(move) != null) break; if (board.getDest(move) != null)
} else break; break;
} else
break;
} }
return moves; return moves;
} }

15
src/dev/kske/chess/event/EventBus.java
View File

@ -23,18 +23,23 @@ public class EventBus {
* @return a singleton instance of {@link EventBus} * @return a singleton instance of {@link EventBus}
*/ */
public static EventBus getInstance() { public static EventBus getInstance() {
if (instance == null) instance = new EventBus(); if (instance == null)
instance = new EventBus();
return instance; return instance;
} }
private EventBus() { subscribers = new ArrayList<>(); } private EventBus() {
subscribers = new ArrayList<>();
}
/** /**
* Registers a subscriber to which future events will be dispatched. * Registers a subscriber to which future events will be dispatched.
* *
* @param subscribable the subscriber to register * @param subscribable the subscriber to register
*/ */
public void register(Subscriber subscribable) { subscribers.add(subscribable); } public void register(Subscriber subscribable) {
subscribers.add(subscribable);
}
/** /**
* Dispatches an event to all {@Subscriber}s registered at this event bus. * Dispatches an event to all {@Subscriber}s registered at this event bus.
@ -42,7 +47,9 @@ public class EventBus {
* @param event the event to dispatch * @param event the event to dispatch
*/ */
public void dispatch(Event<?> event) { public void dispatch(Event<?> event) {
subscribers.stream().filter(e -> e.supports().contains(event.getClass())).forEach(e -> e.handle(event)); subscribers.stream()
.filter(e -> e.supports().contains(event.getClass()))
.forEach(e -> e.handle(event));
} }
/** /**

4
src/dev/kske/chess/event/GameStartEvent.java
View File

@ -19,7 +19,9 @@ public class GameStartEvent implements Event<Game> {
* *
* @param source the game started * @param source the game started
*/ */
public GameStartEvent(Game source) { game = source; } public GameStartEvent(Game source) {
game = source;
}
@Override @Override
public Game getData() { return game; } public Game getData() { return game; }

4
src/dev/kske/chess/event/MoveEvent.java
View File

@ -14,7 +14,7 @@ import dev.kske.chess.board.Move;
public class MoveEvent implements Event<Move> { public class MoveEvent implements Event<Move> {
private final Move move; private final Move move;
private final BoardState boardState; private final BoardState boardState;
/** /**
* Creates an instance of {@link MoveEvent}. * Creates an instance of {@link MoveEvent}.
@ -24,7 +24,7 @@ public class MoveEvent implements Event<Move> {
*/ */
public MoveEvent(Move move, BoardState boardState) { public MoveEvent(Move move, BoardState boardState) {
this.move = move; this.move = move;
this.boardState = boardState; this.boardState = boardState;
} }
@Override @Override

3
src/dev/kske/chess/event/Subscriber.java
View File

@ -19,7 +19,8 @@ public interface Subscriber {
/** /**
* Consumes an event dispatched by an event bus. * Consumes an event dispatched by an event bus.
* *
* @param event The event dispatched by the event bus, only of supported type * @param event The event dispatched by the event bus, only of supported
* type
*/ */
void handle(Event<?> event); void handle(Event<?> event);

68
src/dev/kske/chess/game/Game.java
View File

@ -29,15 +29,16 @@ import dev.kske.chess.ui.OverlayComponent;
*/ */
public class Game { public class Game {
private Map<Color, Player> players = new EnumMap<>(Color.class); private Map<Color, Player> players = new EnumMap<>(Color.class);
private Board board; private Board board;
private OverlayComponent overlayComponent; private OverlayComponent overlayComponent;
private BoardComponent boardComponent; private BoardComponent boardComponent;
/** /**
* Initializes game with a new {@link Board}. * Initializes game with a new {@link Board}.
* *
* @param boardPane the board pane which will display the newly created board * @param boardPane the board pane which will display the newly created
* board
* @param whiteName the name of the player controlling the white pieces * @param whiteName the name of the player controlling the white pieces
* @param blackName the name of the player controlling the black pieces * @param blackName the name of the player controlling the black pieces
*/ */
@ -49,12 +50,15 @@ public class Game {
/** /**
* Initializes game with an existing {@link Board}. * Initializes game with an existing {@link Board}.
* *
* @param boardPane the board pane which will display the newly created board * @param boardPane the board pane which will display the newly created
* board
* @param whiteName the name of the player controlling the white pieces * @param whiteName the name of the player controlling the white pieces
* @param blackName the name of the player controlling the black pieces * @param blackName the name of the player controlling the black pieces
* @param board the board on which the game will be played * @param board the board on which the game will be played
*/ */
public Game(BoardPane boardPane, String whiteName, String blackName, Board board) { public Game(
BoardPane boardPane, String whiteName, String blackName, Board board
) {
this.board = board; this.board = board;
init(boardPane, whiteName, blackName); init(boardPane, whiteName, blackName);
} }
@ -62,8 +66,8 @@ public class Game {
private void init(BoardPane boardPane, String whiteName, String blackName) { private void init(BoardPane boardPane, String whiteName, String blackName) {
// Initialize / synchronize UI // Initialize / synchronize UI
overlayComponent = boardPane.getOverlayComponent(); overlayComponent = boardPane.getOverlayComponent();
boardComponent = boardPane.getBoardComponent(); boardComponent = boardPane.getBoardComponent();
boardComponent.setBoard(board); boardComponent.setBoard(board);
// Initialize players // Initialize players
@ -74,9 +78,11 @@ public class Game {
/** /**
* Initializes player subclass. * Initializes player subclass.
* *
* @param name the name of the player. {@code Natural Player} will initialize a * @param name the name of the player. {@code Natural Player} will
* initialize a
* {@link NaturalPlayer}, {@code AI Player} will initialize an * {@link NaturalPlayer}, {@code AI Player} will initialize an
* {@link AIPlayer}. Everything else will attempt to load an engine * {@link AIPlayer}. Everything else will attempt to load an
* engine
* with that name * with that name
* @param color the color of the player * @param color the color of the player
* @return the instantiated player or {@code null} if the name could not be * @return the instantiated player or {@code null} if the name could not be
@ -90,7 +96,8 @@ public class Game {
return new AIPlayer(this, color, 4, -10); return new AIPlayer(this, color, 4, -10);
default: default:
for (EngineInfo info : EngineUtil.getEngineInfos()) for (EngineInfo info : EngineUtil.getEngineInfos())
if (info.name.equals(name)) return new UCIPlayer(this, color, info.path); if (info.name.equals(name))
return new UCIPlayer(this, color, info.path);
System.err.println("Invalid player name: " + name); System.err.println("Invalid player name: " + name);
return null; return null;
} }
@ -98,14 +105,18 @@ public class Game {
/** /**
* Should be called once a player makes a move. Depending on the legality of * Should be called once a player makes a move. Depending on the legality of
* that move and the state of the game another move might be requested from one * that move and the state of the game another move might be requested from
* one
* of the players. * of the players.
* *
* @param player the player who generated the move * @param player the player who generated the move
* @param move the generated move * @param move the generated move
*/ */
public synchronized void onMove(Player player, Move move) { public synchronized void onMove(Player player, Move move) {
if (board.getPos(move).getColor() == player.color && board.attemptMove(move)) { if (
board.getPos(move).getColor() == player.color
&& board.attemptMove(move)
) {
// Redraw // Redraw
boardComponent.repaint(); boardComponent.repaint();
@ -114,25 +125,33 @@ public class Game {
// Run garbage collection // Run garbage collection
System.gc(); System.gc();
BoardState boardState = board.getState(board.getDest(move).getColor().opposite()); BoardState boardState
= board.getState(board.getDest(move).getColor().opposite());
EventBus.getInstance().dispatch(new MoveEvent(move, boardState)); EventBus.getInstance().dispatch(new MoveEvent(move, boardState));
switch (boardState) { switch (boardState) {
case CHECKMATE: case CHECKMATE:
case STALEMATE: case STALEMATE:
String result = String.format("%s in %s!%n", player.color.opposite(), boardState); String result = String.format(
"%s in %s!%n",
player.color.opposite(),
boardState
);
System.out.print(result); System.out.print(result);
JOptionPane.showMessageDialog(boardComponent, result); JOptionPane.showMessageDialog(boardComponent, result);
break; break;
case CHECK: case CHECK:
System.out.printf("%s in check!%n", player.color.opposite()); System.out
.printf("%s in check!%n", player.color.opposite());
default: default:
players.get(board.getLog().getActiveColor()).requestMove(); players.get(board.getLog().getActiveColor()).requestMove();
} }
} else player.requestMove(); } else
player.requestMove();
} }
/** /**
* Starts the game by requesting a move from the player of the currently active * Starts the game by requesting a move from the player of the currently
* active
* color. * color.
*/ */
public synchronized void start() { public synchronized void start() {
@ -141,7 +160,8 @@ public class Game {
} }
/** /**
* Cancels move calculations, initializes the default position and clears the * Cancels move calculations, initializes the default position and clears
* the
* {@link OverlayComponent}. * {@link OverlayComponent}.
*/ */
public synchronized void reset() { public synchronized void reset() {
@ -155,15 +175,17 @@ public class Game {
/** /**
* Stops the game by disconnecting its players from the UI. * Stops the game by disconnecting its players from the UI.
*/ */
public synchronized void stop() { players.values().forEach(Player::disconnect); } public synchronized void stop() {
players.values().forEach(Player::disconnect);
}
/** /**
* Assigns the players their opposite colors. * Assigns the players their opposite colors.
*/ */
public synchronized void swapColors() { public synchronized void swapColors() {
players.values().forEach(Player::cancelMove); players.values().forEach(Player::cancelMove);
Player white = players.get(Color.WHITE); Player white = players.get(Color.WHITE);
Player black = players.get(Color.BLACK); Player black = players.get(Color.BLACK);
white.setColor(Color.BLACK); white.setColor(Color.BLACK);
black.setColor(Color.WHITE); black.setColor(Color.WHITE);
players.put(Color.WHITE, black); players.put(Color.WHITE, black);

81
src/dev/kske/chess/game/NaturalPlayer.java
View File

@ -30,63 +30,83 @@ public class NaturalPlayer extends Player implements MouseListener {
private final OverlayComponent overlayComponent; private final OverlayComponent overlayComponent;
private boolean moveRequested; private boolean moveRequested;
private Piece selectedPiece; private Piece selectedPiece;
private List<Move> possibleMoves; private List<Move> possibleMoves;
/** /**
* Creates an instance of {@link NaturalPlayer}. * Creates an instance of {@link NaturalPlayer}.
* *
* @param game the game in which this player will be used * @param game the game in which this player will be used
* @param color the piece color this player will control * @param color the piece color this player will control
* @param overlayComponent the overlay component that will be used to display * @param overlayComponent the overlay component that will be used to
* display
* possible moves to the user * possible moves to the user
*/ */
public NaturalPlayer(Game game, Color color, OverlayComponent overlayComponent) { public NaturalPlayer(
Game game, Color color, OverlayComponent overlayComponent
) {
super(game, color); super(game, color);
this.overlayComponent = overlayComponent; this.overlayComponent = overlayComponent;
name = "Player"; name = "Player";
moveRequested = false; moveRequested = false;
overlayComponent.addMouseListener(this); overlayComponent.addMouseListener(this);
} }
@Override @Override
public void requestMove() { moveRequested = true; } public void requestMove() {
moveRequested = true;
}
@Override @Override
public void cancelMove() { moveRequested = false; } public void cancelMove() {
moveRequested = false;
}
@Override @Override
public void disconnect() { overlayComponent.removeMouseListener(this); } public void disconnect() {
overlayComponent.removeMouseListener(this);
}
@Override @Override
public void mousePressed(MouseEvent evt) { public void mousePressed(MouseEvent evt) {
if (!moveRequested) return; if (!moveRequested)
return;
if (selectedPiece == null) { if (selectedPiece == null) {
// Get selected Piece // Get selected Piece
final Position pos = new Position(evt.getPoint().x / overlayComponent.getTileSize(), evt.getPoint().y / overlayComponent.getTileSize()); final Position pos = new Position(
evt.getPoint().x / overlayComponent.getTileSize(),
evt.getPoint().y / overlayComponent.getTileSize()
);
selectedPiece = board.get(pos); selectedPiece = board.get(pos);
// Check if a piece was selected // Check if a piece was selected
if (selectedPiece != null) { if (selectedPiece != null)
// Discard selection if the piece has the wrong color // Discard selection if the piece has the wrong color
if (selectedPiece.getColor() == color.opposite()) selectedPiece = null; if (selectedPiece.getColor() == color.opposite())
selectedPiece = null;
else { else {
// Generate all moves possible with the selected piece and display their // Generate all moves possible with the selected piece and
// display their
// destinations // destinations
possibleMoves = selectedPiece.getMoves(pos); possibleMoves = selectedPiece.getMoves(pos);
overlayComponent.displayDots(possibleMoves.stream().map(move -> move.getDest()).collect(Collectors.toList())); overlayComponent.displayDots(
possibleMoves.stream().map(Move::getDest).collect(Collectors.toList())
);
} }
}
} else { } else {
Position dest = new Position(evt.getPoint().x / overlayComponent.getTileSize(), evt.getPoint().y / overlayComponent.getTileSize()); Position dest = new Position(
evt.getPoint().x / overlayComponent.getTileSize(),
evt.getPoint().y / overlayComponent.getTileSize()
);
// Get all moves leading to the specified destination // Get all moves leading to the specified destination
List<Move> selectedMoves = possibleMoves.stream().filter(m -> m.getDest().equals(dest)).collect(Collectors.toList()); List<Move> selectedMoves = possibleMoves.stream()
.filter(m -> m.getDest().equals(dest))
.collect(Collectors.toList());
if (!selectedMoves.isEmpty()) { if (!selectedMoves.isEmpty()) {
Move move; Move move;
@ -94,21 +114,26 @@ public class NaturalPlayer extends Player implements MouseListener {
if (selectedMoves.size() > 1) { if (selectedMoves.size() > 1) {
// Let the user select a promotion piece // Let the user select a promotion piece
JComboBox<Move> comboBox = new JComboBox<>(selectedMoves.toArray(new Move[0])); JComboBox<Move> comboBox
JOptionPane.showMessageDialog(overlayComponent, comboBox, "Select a promotion", JOptionPane.QUESTION_MESSAGE); = new JComboBox<>(selectedMoves.toArray(new Move[0]));
JOptionPane.showMessageDialog(
overlayComponent,
comboBox,
"Select a promotion",
JOptionPane.QUESTION_MESSAGE
);
move = selectedMoves.get(comboBox.getSelectedIndex()); move = selectedMoves.get(comboBox.getSelectedIndex());
} else move = selectedMoves.get(0); } else
move = selectedMoves.get(0);
// Tell the game to execute the move // Tell the game to execute the move
moveRequested = false; moveRequested = false;
game.onMove(NaturalPlayer.this, move); game.onMove(NaturalPlayer.this, move);
} }
// Discard the selection // Discard the selection
overlayComponent.clearDots(); overlayComponent.clearDots();
selectedPiece = null; selectedPiece = null;
possibleMoves = null; possibleMoves = null;
} }
} }

14
src/dev/kske/chess/game/Player.java
View File

@ -17,11 +17,11 @@ import dev.kske.chess.board.Piece.Color;
*/ */
public abstract class Player { public abstract class Player {
protected final Game game; protected final Game game;
protected final Board board; protected final Board board;
protected String name; protected String name;
protected Color color; protected Color color;
/** /**
* Initializes the color of this player. * Initializes the color of this player.
@ -30,9 +30,9 @@ public abstract class Player {
* @param color the piece color that this player will control * @param color the piece color that this player will control
*/ */
public Player(Game game, Color color) { public Player(Game game, Color color) {
this.game = game; this.game = game;
board = game.getBoard(); board = game.getBoard();
this.color = color; this.color = color;
} }
/** /**

40
src/dev/kske/chess/game/UCIPlayer.java
View File

@ -49,13 +49,19 @@ public class UCIPlayer extends Player implements UCIListener {
} }
@Override @Override
public void cancelMove() { handle.stop(); } public void cancelMove() {
handle.stop();
}
@Override @Override
public void disconnect() { handle.quit(); } public void disconnect() {
handle.quit();
}
@Override @Override
public void onIdName(String name) { this.name = name; } public void onIdName(String name) {
this.name = name;
}
@Override @Override
public void onBestMove(String move) { public void onBestMove(String move) {
@ -64,23 +70,37 @@ public class UCIPlayer extends Player implements UCIListener {
} }
@Override @Override
public void onBestMove(String move, Move ponderMove) { onBestMove(move); } public void onBestMove(String move, Move ponderMove) {
onBestMove(move);
}
@Override @Override
public void onCopyProtectionChecking() { System.out.println("Copy protection checking..."); } public void onCopyProtectionChecking() {
System.out.println("Copy protection checking...");
}
@Override @Override
public void onCopyProtectionOk() { System.out.println("Copy protection ok"); } public void onCopyProtectionOk() {
System.out.println("Copy protection ok");
}
@Override @Override
public void onCopyProtectionError() { System.err.println("Copy protection error!"); } public void onCopyProtectionError() {
System.err.println("Copy protection error!");
}
@Override @Override
public void onRegistrationChecking() { System.out.println("Registration checking..."); } public void onRegistrationChecking() {
System.out.println("Registration checking...");
}
@Override @Override
public void onRegistrationOk() { System.out.println("Registration ok"); } public void onRegistrationOk() {
System.out.println("Registration ok");
}
@Override @Override
public void onRegistrationError() { System.err.println("Registration error!"); } public void onRegistrationError() {
System.err.println("Registration error!");
}
} }

59
src/dev/kske/chess/game/ai/AIPlayer.java
View File

@ -22,12 +22,12 @@ import dev.kske.chess.game.Player;
*/ */
public class AIPlayer extends Player { public class AIPlayer extends Player {
private int availableProcessors; private int availableProcessors;
private int maxDepth; private int maxDepth;
private int alphaBetaThreshold; private int alphaBetaThreshold;
private volatile boolean exitRequested; private volatile boolean exitRequested;
private volatile ExecutorService executor; private volatile ExecutorService executor;
/** /**
* Creates an instance of {@link AIPlayer}. * Creates an instance of {@link AIPlayer}.
@ -39,44 +39,51 @@ public class AIPlayer extends Player {
* reached to continue searching the children of a * reached to continue searching the children of a
* move * move
*/ */
public AIPlayer(Game game, Color color, int maxDepth, int alphaBetaThreshold) { public AIPlayer(
Game game, Color color, int maxDepth, int alphaBetaThreshold
) {
super(game, color); super(game, color);
name = "AIPlayer"; name = "AIPlayer";
availableProcessors = Runtime.getRuntime().availableProcessors(); availableProcessors = Runtime.getRuntime().availableProcessors();
this.maxDepth = maxDepth; this.maxDepth = maxDepth;
this.alphaBetaThreshold = alphaBetaThreshold; this.alphaBetaThreshold = alphaBetaThreshold;
} }
@Override @Override
public void requestMove() { public void requestMove() {
exitRequested = false; exitRequested = false;
// Define some processing threads, split the available moves between them and // Define some processing threads, split the available moves between
// them and
// retrieve the result after their execution. // retrieve the result after their execution.
new Thread(() -> { new Thread(() -> {
// Get a copy of the board and the available moves. // Get a copy of the board and the available moves.
Board board = new Board(this.board, false); Board board = new Board(this.board, false);
List<Move> moves = board.getMoves(color); List<Move> moves = board.getMoves(color);
// Define move processors and split the available moves between them. // Define move processors and split the available moves between
int numThreads = Math.min(moves.size(), availableProcessors); // them.
List<MoveProcessor> processors = new ArrayList<>(numThreads); int numThreads = Math.min(moves.size(), availableProcessors);
final int step = moves.size() / numThreads; List<MoveProcessor> processors = new ArrayList<>(numThreads);
int rem = moves.size() % numThreads; final int step = moves.size() / numThreads;
int beginIndex = 0, endIndex = 0; int rem = moves.size() % numThreads;
int beginIndex = 0, endIndex = 0;
for (int i = 0; i < numThreads; i++) { for (int i = 0; i < numThreads; i++) {
if (rem-- > 0) ++endIndex; if (rem-- > 0)
++endIndex;
endIndex += step; endIndex += step;
processors.add(new MoveProcessor(new Board(board, false), moves.subList(beginIndex, endIndex), color, maxDepth, alphaBetaThreshold)); processors
.add(new MoveProcessor(new Board(board, false), moves.subList(beginIndex, endIndex), color, maxDepth, alphaBetaThreshold));
beginIndex = endIndex; beginIndex = endIndex;
} }
// Execute processors, get the best result and pass it back to the
// Execute processors, get the best result and pass it back to the Game class // Game class
executor = Executors.newFixedThreadPool(numThreads); executor = Executors.newFixedThreadPool(numThreads);
List<ProcessingResult> results = new ArrayList<>(numThreads); List<ProcessingResult> results = new ArrayList<>(numThreads);
try { try {
List<Future<ProcessingResult>> futures = executor.invokeAll(processors); List<Future<ProcessingResult>> futures
= executor.invokeAll(processors);
for (Future<ProcessingResult> f : futures) for (Future<ProcessingResult> f : futures)
results.add(f.get()); results.add(f.get());
} catch (InterruptedException | ExecutionException ex) { } catch (InterruptedException | ExecutionException ex) {
@ -85,7 +92,9 @@ public class AIPlayer extends Player {
executor.shutdown(); executor.shutdown();
} }
results.sort((r1, r2) -> Integer.compare(r2.score, r1.score)); results.sort((r1, r2) -> Integer.compare(r2.score, r1.score));
if (!exitRequested) SwingUtilities.invokeLater(() -> game.onMove(this, results.get(0).move)); if (!exitRequested)
SwingUtilities
.invokeLater(() -> game.onMove(this, results.get(0).move));
}, "AIPlayer calculation setup").start(); }, "AIPlayer calculation setup").start();
} }

253
src/dev/kske/chess/game/ai/MoveProcessor.java
View File

@ -20,11 +20,11 @@ import dev.kske.chess.board.Piece.Color;
*/ */
public class MoveProcessor implements Callable<ProcessingResult> { public class MoveProcessor implements Callable<ProcessingResult> {
private final Board board; private final Board board;
private final List<Move> rootMoves; private final List<Move> rootMoves;
private final Color color; private final Color color;
private final int maxDepth; private final int maxDepth;
private final int alphaBetaThreshold; private final int alphaBetaThreshold;
private Move bestMove; private Move bestMove;
@ -32,34 +32,172 @@ public class MoveProcessor implements Callable<ProcessingResult> {
static { static {
positionScores = new HashMap<>(); positionScores = new HashMap<>();
positionScores.put(King.class, positionScores.put(
new int[][] { new int[] { -3, -4, -4, -5, -5, -4, -4, -3 }, new int[] { -3, -4, -4, -5, -4, -4, -4, -3 }, King.class,
new int[] { -3, -4, -4, -5, -4, -4, -4, -3 }, new int[] { -3, -4, -4, -5, -4, -4, -4, -3 }, new int[][] {
new int[] { -2, -3, -3, -2, -2, -2, -2, -1 }, new int[] { -1, -2, -2, -2, -2, -2, -2, -1 }, new int[] {
new int[] { 2, 2, 0, 0, 0, 0, 2, 2 }, new int[] { 2, 3, 1, 0, 0, 1, 3, 2 } }); -3, -4, -4, -5, -5, -4, -4, -3
positionScores.put(Queen.class, }, new int[] {
new int[][] { new int[] { -2, -1, -1, -1, -1, -1, -1, -2 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, -3, -4, -4, -5, -4, -4, -4, -3
new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, new int[] { 0, 0, 1, 1, 1, 1, 0, -1 }, },
new int[] { -1, 1, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 0, 1, 0, 0, 0, 0, -1 }, new int[] {
new int[] { -2, -1, -1, -1, -1, -1, -1, -2 } }); -3, -4, -4, -5, -4, -4, -4, -3
positionScores.put(Rook.class, },
new int[][] { new int[] { 0, 0, 0, 0, 0, 0, 0, 0 }, new int[] { 1, 1, 1, 1, 1, 1, 1, 1 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] {
new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, -3, -4, -4, -5, -4, -4, -4, -3
new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] { 0, 0, 0, 1, 1, 0, 0, 0 } }); },
positionScores.put(Knight.class, new int[] {
new int[][] { new int[] { -5, -4, -3, -3, -3, -3, -4, -5 }, new int[] { -4, -2, 0, 0, 0, 0, -2, -4 }, -2, -3, -3, -2, -2, -2, -2, -1
new int[] { -3, 0, 1, 2, 2, 1, 0, -3 }, new int[] { -3, 1, 2, 2, 2, 2, 1, -3 }, new int[] { -3, 0, 2, 2, 2, 2, 0, -1 }, },
new int[] { -3, 1, 1, 2, 2, 1, 1, -3 }, new int[] { -4, -2, 0, 1, 1, 0, -2, -4 }, new int[] {
new int[] { -5, -4, -3, -3, -3, -3, -4, -5 } }); -1, -2, -2, -2, -2, -2, -2, -1
positionScores.put(Bishop.class, },
new int[][] { new int[] { -2, -1, -1, -1, -1, -1, -1, 2 }, new int[] { -1, 0, 0, 0, 0, 0, 0, -1 }, new int[] {
new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, new int[] { -1, 1, 1, 1, 1, 1, 1, -1 }, new int[] { -1, 0, 1, 1, 1, 1, 0, -1 }, 2, 2, 0, 0, 0, 0, 2, 2
new int[] { -1, 1, 1, 1, 1, 1, 1, -1 }, new int[] { -1, 1, 0, 0, 0, 0, 1, -1 }, },
new int[] { -2, -1, -1, -1, -1, -1, -1, -2 } }); new int[] {
positionScores.put(Pawn.class, 2, 3, 1, 0, 0, 1, 3, 2
new int[][] { new int[] { 0, 0, 0, 0, 0, 0, 0, 0 }, new int[] { 5, 5, 5, 5, 5, 5, 5, 5 }, new int[] { 1, 1, 2, 3, 3, 2, 1, 1 }, }
new int[] { 0, 0, 1, 3, 3, 1, 0, 0 }, new int[] { 0, 0, 0, 2, 2, 0, 0, 0 }, new int[] { 0, 0, -1, 0, 0, -1, 0, 0 }, }
new int[] { 0, 1, 1, -2, -2, 1, 1, 0 }, new int[] { 0, 0, 0, 0, 0, 0, 0, 0 } }); );
positionScores.put(
Queen.class,
new int[][] {
new int[] {
-2, -1, -1, -1, -1, -1, -1, -2
}, new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
-1, 0, 1, 1, 1, 1, 0, -1
},
new int[] {
-1, 0, 1, 1, 1, 1, 0, -1
},
new int[] {
0, 0, 1, 1, 1, 1, 0, -1
},
new int[] {
-1, 1, 1, 1, 1, 1, 0, -1
},
new int[] {
-1, 0, 1, 0, 0, 0, 0, -1
},
new int[] {
-2, -1, -1, -1, -1, -1, -1, -2
}
}
);
positionScores.put(
Rook.class,
new int[][] {
new int[] {
0, 0, 0, 0, 0, 0, 0, 0
}, new int[] {
1, 1, 1, 1, 1, 1, 1, 1
}, new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
0, 0, 0, 1, 1, 0, 0, 0
}
}
);
positionScores.put(
Knight.class,
new int[][] {
new int[] {
-5, -4, -3, -3, -3, -3, -4, -5
}, new int[] {
-4, -2, 0, 0, 0, 0, -2, -4
},
new int[] {
-3, 0, 1, 2, 2, 1, 0, -3
},
new int[] {
-3, 1, 2, 2, 2, 2, 1, -3
},
new int[] {
-3, 0, 2, 2, 2, 2, 0, -1
},
new int[] {
-3, 1, 1, 2, 2, 1, 1, -3
},
new int[] {
-4, -2, 0, 1, 1, 0, -2, -4
},
new int[] {
-5, -4, -3, -3, -3, -3, -4, -5
}
}
);
positionScores.put(
Bishop.class,
new int[][] {
new int[] {
-2, -1, -1, -1, -1, -1, -1, 2
}, new int[] {
-1, 0, 0, 0, 0, 0, 0, -1
},
new int[] {
-1, 0, 1, 1, 1, 1, 0, -1
},
new int[] {
-1, 1, 1, 1, 1, 1, 1, -1
},
new int[] {
-1, 0, 1, 1, 1, 1, 0, -1
},
new int[] {
-1, 1, 1, 1, 1, 1, 1, -1
},
new int[] {
-1, 1, 0, 0, 0, 0, 1, -1
},
new int[] {
-2, -1, -1, -1, -1, -1, -1, -2
}
}
);
positionScores.put(
Pawn.class,
new int[][] {
new int[] {
0, 0, 0, 0, 0, 0, 0, 0
}, new int[] {
5, 5, 5, 5, 5, 5, 5, 5
}, new int[] {
1, 1, 2, 3, 3, 2, 1, 1
},
new int[] {
0, 0, 1, 3, 3, 1, 0, 0
},
new int[] {
0, 0, 0, 2, 2, 0, 0, 0
},
new int[] {
0, 0, -1, 0, 0, -1, 0, 0
},
new int[] {
0, 1, 1, -2, -2, 1, 1, 0
},
new int[] {
0, 0, 0, 0, 0, 0, 0, 0
}
}
);
} }
/** /**
@ -69,15 +207,19 @@ public class MoveProcessor implements Callable<ProcessingResult> {
* @param rootMoves the moves on which the search is based * @param rootMoves the moves on which the search is based
* @param color the color for which to search * @param color the color for which to search
* @param maxDepth the maximal recursion depth to search to * @param maxDepth the maximal recursion depth to search to
* @param alphaBetaThreshold the threshold necessary to continue a search for a * @param alphaBetaThreshold the threshold necessary to continue a search
* for a
* specific move * specific move
*/ */
public MoveProcessor(Board board, List<Move> rootMoves, Color color, int maxDepth, int alphaBetaThreshold) { public MoveProcessor(
this.board = board; Board board, List<Move> rootMoves, Color color, int maxDepth,
this.rootMoves = rootMoves; int alphaBetaThreshold
this.color = color; ) {
this.maxDepth = maxDepth; this.board = board;
this.alphaBetaThreshold = alphaBetaThreshold; this.rootMoves = rootMoves;
this.color = color;
this.maxDepth = maxDepth;
this.alphaBetaThreshold = alphaBetaThreshold;
} }
@Override @Override
@ -90,18 +232,23 @@ public class MoveProcessor implements Callable<ProcessingResult> {
int bestValue = Integer.MIN_VALUE; int bestValue = Integer.MIN_VALUE;
for (Move move : moves) { for (Move move : moves) {
board.move(move); board.move(move);
int teamValue = evaluate(board, color); int teamValue = evaluate(board, color);
int enemyValue = evaluate(board, color.opposite()); int enemyValue = evaluate(board, color.opposite());
int valueChange = teamValue - enemyValue; int valueChange = teamValue - enemyValue;
if (depth < maxDepth && valueChange >= alphaBetaThreshold) if (depth < maxDepth && valueChange >= alphaBetaThreshold)
valueChange -= miniMax(board, board.getMoves(color.opposite()), color.opposite(), depth + 1); valueChange -= miniMax(
board,
board.getMoves(color.opposite()),
color.opposite(),
depth + 1
);
if (valueChange > bestValue) { if (valueChange > bestValue) {
bestValue = valueChange; bestValue = valueChange;
if (depth == 0) bestMove = move; if (depth == 0)
bestMove = move;
} }
board.revert(); board.revert();
} }
return bestValue; return bestValue;
@ -118,10 +265,18 @@ public class MoveProcessor implements Callable<ProcessingResult> {
int score = 0; int score = 0;
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++) for (int j = 0; j < 8; j++)
if (board.getBoardArr()[i][j] != null && board.getBoardArr()[i][j].getColor() == color) { if (
board.getBoardArr()[i][j] != null
&& board.getBoardArr()[i][j].getColor() == color
) {
score += board.getBoardArr()[i][j].getValue(); score += board.getBoardArr()[i][j].getValue();
if (positionScores.containsKey(board.getBoardArr()[i][j].getClass())) if (
score += positionScores.get(board.getBoardArr()[i][j].getClass())[i][color == Color.WHITE ? j : 7 - j]; positionScores
.containsKey(board.getBoardArr()[i][j].getClass())
)
score += positionScores.get(
board.getBoardArr()[i][j].getClass()
)[i][color == Color.WHITE ? j : 7 - j];
} }
return score; return score;
} }

9
src/dev/kske/chess/game/ai/ProcessingResult.java
View File

@ -31,10 +31,13 @@ public class ProcessingResult {
* @param score the score associated with the best move * @param score the score associated with the best move
*/ */
public ProcessingResult(Move move, int score) { public ProcessingResult(Move move, int score) {
this.move = move; this.move = move;
this.score = score; this.score = score;
} }
@Override @Override
public String toString() { return String.format("ProcessingResult[Move = %s,Score = %d]", move, score); } public String toString() {
return String
.format("ProcessingResult[Move = %s,Score = %d]", move, score);
}
} }

36
src/dev/kske/chess/io/EngineUtil.java
View File

@ -35,15 +35,19 @@ public class EngineUtil {
*/ */
public static void addEngine(String enginePath) { public static void addEngine(String enginePath) {
try { try {
EngineInfo info = new EngineInfo(enginePath); EngineInfo info = new EngineInfo(enginePath);
UCIHandle handle = new UCIHandle(enginePath); UCIHandle handle = new UCIHandle(enginePath);
handle.registerListener(new UCIListener() { handle.registerListener(new UCIListener() {
@Override @Override
public void onIdName(String name) { info.name = name; } public void onIdName(String name) {
info.name = name;
}
@Override @Override
public void onIdAuthor(String author) { info.author = author; } public void onIdAuthor(String author) {
info.author = author;
}
@Override @Override
public void onUCIOk() { public void onUCIOk() {
@ -60,17 +64,25 @@ public class EngineUtil {
@SuppressWarnings("unchecked") @SuppressWarnings("unchecked")
private static void loadEngineInfos() { private static void loadEngineInfos() {
try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(engineInfoFile))) { try (
ObjectInputStream in
= new ObjectInputStream(new FileInputStream(engineInfoFile))
) {
Object obj = in.readObject(); Object obj = in.readObject();
if (obj instanceof ArrayList<?>) engineInfos = (ArrayList<EngineInfo>) obj; if (obj instanceof ArrayList<?>)
else throw new IOException("Serialized object has the wrong class."); engineInfos = (ArrayList<EngineInfo>) obj;
else
throw new IOException("Serialized object has the wrong class.");
} catch (ClassNotFoundException | IOException ex) { } catch (ClassNotFoundException | IOException ex) {
engineInfos = new ArrayList<>(); engineInfos = new ArrayList<>();
} }
} }
private static void saveEngineInfos() { private static void saveEngineInfos() {
try (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(engineInfoFile))) { try (
ObjectOutputStream out
= new ObjectOutputStream(new FileOutputStream(engineInfoFile))
) {
out.writeObject(engineInfos); out.writeObject(engineInfos);
} catch (IOException ex) { } catch (IOException ex) {
ex.printStackTrace(); ex.printStackTrace();
@ -112,10 +124,14 @@ public class EngineUtil {
* *
* @param path the path of the engine executable * @param path the path of the engine executable
*/ */
public EngineInfo(String path) { this.path = path; } public EngineInfo(String path) {
this.path = path;
}
@Override @Override
public String toString() { return name + " by " + author + " at " + path; } public String toString() {
return name + " by " + author + " at " + path;
}
} }
/** /**

40
src/dev/kske/chess/io/TextureUtil.java
View File

@ -21,7 +21,8 @@ import dev.kske.chess.board.Piece;
*/ */
public class TextureUtil { public class TextureUtil {
private static Map<String, Image> textures = new HashMap<>(), scaledTextures = new HashMap<>(); private static Map<String, Image> textures = new HashMap<>(),
scaledTextures = new HashMap<>();
static { static {
loadPieceTextures(); loadPieceTextures();
@ -37,7 +38,8 @@ public class TextureUtil {
* @return The fitting texture * @return The fitting texture
*/ */
public static Image getPieceTexture(Piece piece) { public static Image getPieceTexture(Piece piece) {
String key = piece.getClass().getSimpleName().toLowerCase() + "_" + piece.getColor().toString().toLowerCase(); String key = piece.getClass().getSimpleName().toLowerCase() + "_"
+ piece.getColor().toString().toLowerCase();
return scaledTextures.get(key); return scaledTextures.get(key);
} }
@ -48,7 +50,9 @@ public class TextureUtil {
*/ */
public static void scalePieceTextures(int tileSize) { public static void scalePieceTextures(int tileSize) {
scaledTextures.clear(); scaledTextures.clear();
textures.forEach((key, img) -> scaledTextures.put(key, img.getScaledInstance(tileSize, tileSize, Image.SCALE_SMOOTH))); textures.forEach(
(key, img) -> scaledTextures.put(key, img.getScaledInstance(tileSize, tileSize, Image.SCALE_SMOOTH))
);
} }
/** /**
@ -73,18 +77,22 @@ public class TextureUtil {
*/ */
private static void loadPieceTextures() { private static void loadPieceTextures() {
Arrays Arrays
.asList("king_white", .asList(
"king_black", "king_white",
"queen_white", "king_black",
"queen_black", "queen_white",
"rook_white", "queen_black",
"rook_black", "rook_white",
"knight_white", "rook_black",
"knight_black", "knight_white",
"bishop_white", "knight_black",
"bishop_black", "bishop_white",
"pawn_white", "bishop_black",
"pawn_black") "pawn_white",
.forEach(name -> textures.put(name, loadImage("/pieces/" + name + ".png"))); "pawn_black"
)
.forEach(
name -> textures.put(name, loadImage("/pieces/" + name + ".png"))
);
} }
} }

3
src/dev/kske/chess/pgn/PGNDatabase.java
View File

@ -29,7 +29,8 @@ public class PGNDatabase {
* @throws FileNotFoundException if the specified file is not found * @throws FileNotFoundException if the specified file is not found
* @throws ChessException if an error occurs while parsing the file * @throws ChessException if an error occurs while parsing the file
*/ */
public void load(File pgnFile) throws FileNotFoundException, ChessException { public void load(File pgnFile)
throws FileNotFoundException, ChessException {
try (Scanner sc = new Scanner(pgnFile)) { try (Scanner sc = new Scanner(pgnFile)) {
while (sc.hasNext()) while (sc.hasNext())
games.add(PGNGame.parse(sc)); games.add(PGNGame.parse(sc));

85
src/dev/kske/chess/pgn/PGNGame.java
View File

@ -20,21 +20,26 @@ import dev.kske.chess.board.Piece.Color;
*/ */
public class PGNGame { public class PGNGame {
private final Map<String, String> tagPairs = new HashMap<>(7); private final Map<String, String> tagPairs = new HashMap<>(7);
private final Board board; private final Board board;
/** /**
* Creates an instance of {@link PGNGame}. A new default {@link Board} will be * Creates an instance of {@link PGNGame}. A new default {@link Board} will
* be
* created. * created.
*/ */
public PGNGame() { board = new Board(); } public PGNGame() {
board = new Board();
}
/** /**
* Creates an instance of {@link PGNGame}. * Creates an instance of {@link PGNGame}.
* *
* @param board the board associated with the game * @param board the board associated with the game
*/ */
public PGNGame(Board board) { this.board = board; } public PGNGame(Board board) {
this.board = board;
}
/** /**
* Parses a game in {@code PGN} format from a {@link Scanner} instance * Parses a game in {@code PGN} format from a {@link Scanner} instance
@ -46,19 +51,22 @@ public class PGNGame {
public static PGNGame parse(Scanner sc) { public static PGNGame parse(Scanner sc) {
PGNGame game = new PGNGame(); PGNGame game = new PGNGame();
MatchResult matchResult; MatchResult matchResult;
Pattern tagPairPattern = Pattern.compile("\\[(\\w+) \"(.*)\"]"), Pattern tagPairPattern = Pattern.compile("\\[(\\w+) \"(.*)\"]"),
movePattern = Pattern.compile("\\d+\\.\\s+(?:(?:(\\S+)\\s+(\\S+))|(?:O-O-O)|(?:O-O))(?:\\+{0,2}|\\#)"), movePattern = Pattern.compile(
nagPattern = Pattern.compile("(\\$\\d{1,3})*"), terminationMarkerPattern = Pattern.compile("1-0|0-1|1\\/2-1\\/2|\\*"); "\\d+\\.\\s+(?:(?:(\\S+)\\s+(\\S+))|(?:O-O-O)|(?:O-O))(?:\\+{0,2}|\\#)"
),
nagPattern = Pattern.compile("(\\$\\d{1,3})*"), terminationMarkerPattern = Pattern.compile("1-0|0-1|1\\/2-1\\/2|\\*");
// Parse tag pairs // Parse tag pairs
while (sc.findInLine(tagPairPattern) != null) { while (sc.findInLine(tagPairPattern) != null) {
matchResult = sc.match(); matchResult = sc.match();
if (matchResult.groupCount() == 2) game.setTag(matchResult.group(1), matchResult.group(2)); if (matchResult.groupCount() == 2)
else break; game.setTag(matchResult.group(1), matchResult.group(2));
else
break;
sc.nextLine(); sc.nextLine();
} }
// Parse movetext // Parse movetext
while (true) { while (true) {
// Skip NAG (Numeric Annotation Glyph) // Skip NAG (Numeric Annotation Glyph)
@ -68,16 +76,22 @@ public class PGNGame {
if (sc.findWithinHorizon(movePattern, 20) != null) { if (sc.findWithinHorizon(movePattern, 20) != null) {
matchResult = sc.match(); matchResult = sc.match();
if (matchResult.groupCount() > 0) for (int i = 1; i < matchResult.groupCount() + 1; i++) { if (matchResult.groupCount() > 0)
game.board.move(matchResult.group(i)); for (int i = 1; i < matchResult.groupCount() + 1; i++) {
System.out.println(game.getBoard().getLog().getLast().move.toLAN() + ": " + new FENString(game.board).toString()); game.board.move(matchResult.group(i));
} System.out.println(
else break; game.getBoard().getLog().getLast().move.toLAN()
} else break; + ": " + new FENString(game.board).toString()
);
}
else
break;
} else
break;
} }
// Parse game termination marker // Parse game termination marker
if (sc.findWithinHorizon(terminationMarkerPattern, 20) == null) System.err.println("Termination marker expected"); if (sc.findWithinHorizon(terminationMarkerPattern, 20) == null)
System.err.println("Termination marker expected");
return game; return game;
} }
@ -95,18 +109,21 @@ public class PGNGame {
tagPairs.forEach((k, v) -> pw.printf("[%s \"%s\"]%n", k, v)); tagPairs.forEach((k, v) -> pw.printf("[%s \"%s\"]%n", k, v));
// Insert newline if tags were printed // Insert newline if tags were printed
if (!tagPairs.isEmpty()) pw.println(); if (!tagPairs.isEmpty())
pw.println();
if (!board.getLog().isEmpty()) { if (!board.getLog().isEmpty()) {
// Collect SAN moves // Collect SAN moves
Board clone = new Board(board, true); Board clone = new Board(board, true);
List<String> chunks = new ArrayList<>(); List<String> chunks = new ArrayList<>();
boolean flag = true; boolean flag = true;
while (flag) { while (flag) {
Move move = clone.getLog().getLast().move; Move move = clone.getLog().getLast().move;
flag = clone.getLog().hasParent(); flag = clone.getLog().hasParent();
clone.revert(); clone.revert();
String chunk = clone.getLog().getActiveColor() == Color.WHITE ? String.format(" %d. ", clone.getLog().getFullmoveNumber()) : " "; String chunk = clone.getLog().getActiveColor() == Color.WHITE
? String.format(" %d. ", clone.getLog().getFullmoveNumber())
: " ";
chunk += move.toSAN(clone); chunk += move.toSAN(clone);
chunks.add(chunk); chunks.add(chunk);
} }
@ -115,12 +132,14 @@ public class PGNGame {
// Write movetext // Write movetext
String line = ""; String line = "";
for (String chunk : chunks) for (String chunk : chunks)
if (line.length() + chunk.length() <= 80) line += chunk; if (line.length() + chunk.length() <= 80)
line += chunk;
else { else {
pw.println(line); pw.println(line);
line = chunk; line = chunk;
} }
if (!line.isEmpty()) pw.println(line); if (!line.isEmpty())
pw.println(line);
} }
// Write game termination marker // Write game termination marker
pw.print(tagPairs.get("Result")); pw.print(tagPairs.get("Result"));
@ -130,13 +149,17 @@ public class PGNGame {
* @param tagName the name of a game tag * @param tagName the name of a game tag
* @return the value of the game tag * @return the value of the game tag
*/ */
public String getTag(String tagName) { return tagPairs.get(tagName); } public String getTag(String tagName) {
return tagPairs.get(tagName);
}
/** /**
* @param tagName the name of a game tag * @param tagName the name of a game tag
* @return {@code true} if the tag is present * @return {@code true} if the tag is present
*/ */
public boolean hasTag(String tagName) { return tagPairs.containsKey(tagName); } public boolean hasTag(String tagName) {
return tagPairs.containsKey(tagName);
}
/** /**
* Sets a game tag. * Sets a game tag.
@ -144,7 +167,9 @@ public class PGNGame {
* @param tagName the name of the tag * @param tagName the name of the tag
* @param tagValue the value of the tag * @param tagValue the value of the tag
*/ */
public void setTag(String tagName, String tagValue) { tagPairs.put(tagName, tagValue); } public void setTag(String tagName, String tagValue) {
tagPairs.put(tagName, tagValue);
}
/** /**
* @return the board associated with this game * @return the board associated with this game

97
src/dev/kske/chess/uci/UCIHandle.java
View File

@ -17,21 +17,22 @@ import dev.kske.chess.board.Move;
*/ */
public class UCIHandle { public class UCIHandle {
private final Process process; private final Process process;
private final PrintWriter out; private final PrintWriter out;
private final UCIReceiver receiver; private final UCIReceiver receiver;
/** /**
* Creates an instance of {@link UCIHandle}. The engine process is started and * Creates an instance of {@link UCIHandle}. The engine process is started
* and
* passed to a new {@link UCIReceiver}. * passed to a new {@link UCIReceiver}.
* *
* @param enginePath the path to the engine executable * @param enginePath the path to the engine executable
* @throws IOException if the engine process could not be started * @throws IOException if the engine process could not be started
*/ */
public UCIHandle(String enginePath) throws IOException { public UCIHandle(String enginePath) throws IOException {
process = new ProcessBuilder(enginePath).start(); process = new ProcessBuilder(enginePath).start();
out = new PrintWriter(process.getOutputStream(), true); out = new PrintWriter(process.getOutputStream(), true);
receiver = new UCIReceiver(process.getInputStream()); receiver = new UCIReceiver(process.getInputStream());
} }
/** /**
@ -45,26 +46,35 @@ public class UCIHandle {
/** /**
* Tells the engine to use UCI. * Tells the engine to use UCI.
*/ */
public void uci() { out.println("uci"); } public void uci() {
out.println("uci");
}
/** /**
* Switches the debug mode of the engine on or off. * Switches the debug mode of the engine on or off.
* *
* @param debug Enables debugging if set to {@code true}, disables it otherwise * @param debug Enables debugging if set to {@code true}, disables it
* otherwise
*/ */
public void debug(boolean debug) { out.println("debug " + (debug ? "on" : "off")); } public void debug(boolean debug) {
out.println("debug " + (debug ? "on" : "off"));
}
/** /**
* Synchronized the engine with the GUI * Synchronized the engine with the GUI
*/ */
public void isready() { out.println("isready"); } public void isready() {
out.println("isready");
}
/** /**
* Signifies a button press to the engine. * Signifies a button press to the engine.
* *
* @param name The name of the button * @param name The name of the button
*/ */
public void setOption(String name) { out.println("setoption name " + name); } public void setOption(String name) {
out.println("setoption name " + name);
}
/** /**
* Changes an internal parameter of the engine. * Changes an internal parameter of the engine.
@ -72,7 +82,9 @@ public class UCIHandle {
* @param name The name of the parameter * @param name The name of the parameter
* @param value The value of the parameter * @param value The value of the parameter
*/ */
public void setOption(String name, String value) { out.printf("setoption name %s value %s%n", name, value); } public void setOption(String name, String value) {
out.printf("setoption name %s value %s%n", name, value);
}
/** /**
* Registers the engine * Registers the engine
@ -80,29 +92,39 @@ public class UCIHandle {
* @param name The name the engine should be registered with * @param name The name the engine should be registered with
* @param code The code the engine should be registered with * @param code The code the engine should be registered with
*/ */
public void register(String name, String code) { out.printf("register %s %s%n", name, code); } public void register(String name, String code) {
out.printf("register %s %s%n", name, code);
}
/** /**
* Tells the engine to postpone the registration. * Tells the engine to postpone the registration.
*/ */
public void registerLater() { out.println("register later"); } public void registerLater() {
out.println("register later");
}
/** /**
* Tells the engine that the next search will be from a different game. * Tells the engine that the next search will be from a different game.
*/ */
public void uciNewGame() { out.println("ucinewgame"); } public void uciNewGame() {
out.println("ucinewgame");
}
/** /**
* Sets up the position in its initial state. * Sets up the position in its initial state.
*/ */
public void positionStartpos() { out.println("position startpos"); } public void positionStartpos() {
out.println("position startpos");
}
/** /**
* Sets up the position described in the FEN string. * Sets up the position described in the FEN string.
* *
* @param fen FEN representation of the current board * @param fen FEN representation of the current board
*/ */
public void positionFEN(String fen) { out.println("position fen " + fen); } public void positionFEN(String fen) {
out.println("position fen " + fen);
}
/** /**
* Sets up the position described by a list of moves. * Sets up the position described by a list of moves.
@ -119,12 +141,16 @@ public class UCIHandle {
/** /**
* Starts calculating on the current position. * Starts calculating on the current position.
*/ */
public void go() { out.println("go"); } public void go() {
out.println("go");
}
/** /**
* Starts calculating on the current position. * Starts calculating on the current position.
* This command has multiple optional parameters which will only be included in * This command has multiple optional parameters which will only be included
* the call if they are not {@code null}, greater than zero or {@code true} for * in
* the call if they are not {@code null}, greater than zero or {@code true}
* for
* {@code searchMoves}, all integer parameters and all boolean parameters * {@code searchMoves}, all integer parameters and all boolean parameters
* respectively. * respectively.
* *
@ -141,8 +167,11 @@ public class UCIHandle {
* @param moveTime the exact search time * @param moveTime the exact search time
* @param infinite search until the {@code stop} command * @param infinite search until the {@code stop} command
*/ */
public void go(List<Move> searchMoves, boolean ponder, int wTime, int bTime, int wInc, int bInc, int movesToGo, int depth, int nodes, int mate, public void go(
int moveTime, boolean infinite) { List<Move> searchMoves, boolean ponder, int wTime, int bTime, int wInc,
int bInc, int movesToGo, int depth, int nodes, int mate,
int moveTime, boolean infinite
) {
StringJoiner joiner = new StringJoiner(" "); StringJoiner joiner = new StringJoiner(" ");
joiner.add("go"); joiner.add("go");
@ -150,7 +179,8 @@ public class UCIHandle {
joiner.add("searchmoves"); joiner.add("searchmoves");
searchMoves.forEach(m -> joiner.add(m.toLAN())); searchMoves.forEach(m -> joiner.add(m.toLAN()));
} }
if (ponder) joiner.add("ponder"); if (ponder)
joiner.add("ponder");
if (wTime > 0) { if (wTime > 0) {
joiner.add("wtime"); joiner.add("wtime");
joiner.add(String.valueOf(wTime)); joiner.add(String.valueOf(wTime));
@ -187,29 +217,38 @@ public class UCIHandle {
joiner.add("movetime"); joiner.add("movetime");
joiner.add(String.valueOf(moveTime)); joiner.add(String.valueOf(moveTime));
} }
if (infinite) joiner.add("infinite"); if (infinite)
joiner.add("infinite");
out.println(joiner); out.println(joiner);
} }
/** /**
* Stops calculation as soon as possible. * Stops calculation as soon as possible.
*/ */
public void stop() { out.println("stop"); } public void stop() {
out.println("stop");
}
/** /**
* Tells the engine that the user has played the expected move. * Tells the engine that the user has played the expected move.
*/ */
public void ponderHit() { out.println("ponderhit"); } public void ponderHit() {
out.println("ponderhit");
}
/** /**
* Quits the engine process as soon as possible. * Quits the engine process as soon as possible.
*/ */
public void quit() { out.println("quit"); } public void quit() {
out.println("quit");
}
/** /**
* Registers a UCI listener. * Registers a UCI listener.
* *
* @param listener the UCI listener to register * @param listener the UCI listener to register
*/ */
public void registerListener(UCIListener listener) { receiver.registerListener(listener); } public void registerListener(UCIListener listener) {
receiver.registerListener(listener);
}
} }

86
src/dev/kske/chess/uci/UCIInfo.java
View File

@ -14,37 +14,41 @@ import dev.kske.chess.board.Move;
*/ */
public class UCIInfo { public class UCIInfo {
private int depth, seldepth, time, nodes, multipv, currmovenumber, hashfull, nps, tbhits, sbhits, cpuload, cpunr; private int depth, seldepth, time, nodes, multipv, currmovenumber, hashfull,
private List<Move> pv = new ArrayList<>(), refutation = new ArrayList<>(); nps, tbhits, sbhits, cpuload, cpunr;
private Map<Integer, List<Move>> currline = new HashMap<>(); private List<Move> pv = new ArrayList<>(), refutation = new ArrayList<>();
private Move currmove; private Map<Integer, List<Move>> currline = new HashMap<>();
private Score score; private Move currmove;
private String displayString; private Score score;
private String displayString;
/** /**
* Contains every parameter for the UCI info command. Helpful for parsing * Contains every parameter for the UCI info command. Helpful for parsing
* multi-value parameters. * multi-value parameters.
*/ */
private static final List<String> params = Arrays.asList("depth", private static final List<String> params = Arrays.asList(
"seldepth", "depth",
"time", "seldepth",
"nodes", "time",
"multipv", "nodes",
"currmove", "multipv",
"currmovenumber", "currmove",
"hashfull", "currmovenumber",
"nps", "hashfull",
"tbhits", "nps",
"sbhits", "tbhits",
"cpuload", "sbhits",
"string", "cpuload",
"score", "string",
"pv", "score",
"refutation", "pv",
"currline"); "refutation",
"currline"
);
/** /**
* Creates an instance of {@link UCIInfo} by parsing the argument list of a UCI * Creates an instance of {@link UCIInfo} by parsing the argument list of a
* UCI
* info command generated from an engine. * info command generated from an engine.
* *
* @param line the UCI info argument list to parse * @param line the UCI info argument list to parse
@ -95,7 +99,8 @@ public class UCIInfo {
displayString = tokens[++i]; displayString = tokens[++i];
break; break;
case "score": case "score":
score = new Score(line.substring(line.indexOf("score") + tokens[i].length() + 1)); score
= new Score(line.substring(line.indexOf("score") + tokens[i].length() + 1));
i += score.getLength() + 1; i += score.getLength() + 1;
break; break;
case "pv": case "pv":
@ -108,15 +113,22 @@ public class UCIInfo {
break; break;
case "currline": case "currline":
// A CPU number of 1 can be omitted // A CPU number of 1 can be omitted
final Integer cpu = tokens[i].matches("\\d+") ? Integer.parseInt(tokens[i++]) : 1; final Integer cpu = tokens[i].matches("\\d+")
? Integer.parseInt(tokens[i++])
: 1;
final ArrayList<Move> moves = new ArrayList<>(); final ArrayList<Move> moves = new ArrayList<>();
while (i < tokens.length && !params.contains(tokens[i])) while (i < tokens.length && !params.contains(tokens[i]))
moves.add(Move.fromLAN(tokens[i++])); moves.add(Move.fromLAN(tokens[i++]));
currline.put(cpu, moves); currline.put(cpu, moves);
System.err.println("The parameter 'currline' for command 'info' is not yet implemented"); System.err.println(
"The parameter 'currline' for command 'info' is not yet implemented"
);
break; break;
default: default:
System.err.printf("Unknown parameter '%s' for command 'info' found!%n", tokens[i]); System.err.printf(
"Unknown parameter '%s' for command 'info' found!%n",
tokens[i]
);
} }
} }
@ -158,15 +170,16 @@ public class UCIInfo {
public static class Score { public static class Score {
private int cp, mate; private int cp, mate;
private boolean lowerbound, upperbound; private boolean lowerbound, upperbound;
private int length; private int length;
public Score(String line) { public Score(String line) {
String[] tokens = line.split(" "); String[] tokens = line.split(" ");
int i = 0; int i = 0;
for (; i < tokens.length; i++) { for (; i < tokens.length; i++) {
if (params.contains(tokens[i])) break; if (params.contains(tokens[i]))
break;
switch (tokens[i]) { switch (tokens[i]) {
case "cp": case "cp":
cp = Integer.parseInt(tokens[++i]); cp = Integer.parseInt(tokens[++i]);
@ -181,7 +194,10 @@ public class UCIInfo {
upperbound = true; upperbound = true;
break; break;
default: default:
System.err.printf("Unknown parameter '%s' for command 'score' found!%n", tokens[i]); System.err.printf(
"Unknown parameter '%s' for command 'score' found!%n",
tokens[i]
);
} }
} }
length = i + 1; length = i + 1;

23
src/dev/kske/chess/uci/UCIOption.java
View File

@ -1,9 +1,6 @@
package dev.kske.chess.uci; package dev.kske.chess.uci;
import java.util.ArrayList; import java.util.*;
import java.util.Arrays;
import java.util.List;
import java.util.StringJoiner;
/** /**
* Project: <strong>Chess</strong><br> * Project: <strong>Chess</strong><br>
@ -15,9 +12,9 @@ import java.util.StringJoiner;
*/ */
public class UCIOption { public class UCIOption {
private String name, defaultVal, minVal, maxVal; private String name, defaultVal, minVal, maxVal;
private GUIType type; private GUIType type;
private List<String> varList; private List<String> varList;
public UCIOption(String line) { public UCIOption(String line) {
varList = new ArrayList<>(); varList = new ArrayList<>();
@ -27,7 +24,10 @@ public class UCIOption {
switch (tokens[i]) { switch (tokens[i]) {
case "name": case "name":
StringJoiner nameJoiner = new StringJoiner(" "); StringJoiner nameJoiner = new StringJoiner(" ");
while (!Arrays.asList("type", "default", "min", "max", "var").contains(tokens[i + 1])) while (
!Arrays.asList("type", "default", "min", "max", "var")
.contains(tokens[i + 1])
)
nameJoiner.add(tokens[++i]); nameJoiner.add(tokens[++i]);
name = nameJoiner.toString(); name = nameJoiner.toString();
break; break;
@ -48,7 +48,10 @@ public class UCIOption {
varList.add(tokens[++i]); varList.add(tokens[++i]);
break; break;
default: default:
System.err.printf("Unknown parameter '%s' for command 'option' found!%n", tokens[i]); System.err.printf(
"Unknown parameter '%s' for command 'option' found!%n",
tokens[i]
);
} }
} }
@ -64,7 +67,7 @@ public class UCIOption {
public List<String> getVarList() { return varList; } public List<String> getVarList() { return varList; }
public static enum GUIType { public enum GUIType {
CHECK, SPIN, COMBO, BUTTON, STRING CHECK, SPIN, COMBO, BUTTON, STRING
} }
} }

53
src/dev/kske/chess/uci/UCIReceiver.java
View File

@ -26,8 +26,8 @@ public class UCIReceiver implements Runnable {
* @param in the input stream to parse for commands generated by the engine * @param in the input stream to parse for commands generated by the engine
*/ */
public UCIReceiver(InputStream in) { public UCIReceiver(InputStream in) {
this.in = new BufferedReader(new InputStreamReader(in)); this.in = new BufferedReader(new InputStreamReader(in));
listeners = new ArrayList<>(); listeners = new ArrayList<>();
} }
/** /**
@ -38,7 +38,8 @@ public class UCIReceiver implements Runnable {
String line; String line;
while (!Thread.currentThread().isInterrupted()) while (!Thread.currentThread().isInterrupted())
try { try {
if ((line = in.readLine()) != null && !line.isEmpty()) parse(line); if ((line = in.readLine()) != null && !line.isEmpty())
parse(line);
} catch (IndexOutOfBoundsException ex) { } catch (IndexOutOfBoundsException ex) {
System.err.println("Too few arguments were provided!"); System.err.println("Too few arguments were provided!");
ex.printStackTrace(); ex.printStackTrace();
@ -48,8 +49,9 @@ public class UCIReceiver implements Runnable {
} }
private void parse(String line) { private void parse(String line) {
int spaceIndex = line.indexOf(' '); int spaceIndex = line.indexOf(' ');
String command = spaceIndex == -1 ? line : line.substring(0, spaceIndex); String command
= spaceIndex == -1 ? line : line.substring(0, spaceIndex);
switch (command) { switch (command) {
case "id": case "id":
parseId(line.substring(command.length() + 1)); parseId(line.substring(command.length() + 1));
@ -81,8 +83,8 @@ public class UCIReceiver implements Runnable {
} }
private void parseId(String line) { private void parseId(String line) {
String param = line.substring(0, line.indexOf(' ')); String param = line.substring(0, line.indexOf(' '));
String arg = line.substring(param.length() + 1); String arg = line.substring(param.length() + 1);
switch (param) { switch (param) {
case "name": case "name":
listeners.forEach(l -> l.onIdName(arg)); listeners.forEach(l -> l.onIdName(arg));
@ -91,17 +93,22 @@ public class UCIReceiver implements Runnable {
listeners.forEach(l -> l.onIdAuthor(arg)); listeners.forEach(l -> l.onIdAuthor(arg));
break; break;
default: default:
System.err.printf("Unknown parameter '%s' for command 'id' found!%n", param); System.err.printf(
"Unknown parameter '%s' for command 'id' found!%n",
param
);
} }
} }
private void parseBestMove(String line) { private void parseBestMove(String line) {
String[] tokens = line.split(" "); String[] tokens = line.split(" ");
String move = tokens[0]; String move = tokens[0];
// Ponder move // Ponder move
if (tokens.length == 3) listeners.forEach(l -> l.onBestMove(move, Move.fromLAN(tokens[2]))); if (tokens.length == 3)
else listeners.forEach(l -> l.onBestMove(move)); listeners.forEach(l -> l.onBestMove(move, Move.fromLAN(tokens[2])));
else
listeners.forEach(l -> l.onBestMove(move));
} }
private void parseCopyProtection(String line) { private void parseCopyProtection(String line) {
@ -116,7 +123,10 @@ public class UCIReceiver implements Runnable {
listeners.forEach(UCIListener::onCopyProtectionError); listeners.forEach(UCIListener::onCopyProtectionError);
break; break;
default: default:
System.err.printf("Unknown parameter '%s' for command 'copyprotection' found!%n", line); System.err.printf(
"Unknown parameter '%s' for command 'copyprotection' found!%n",
line
);
} }
} }
@ -132,18 +142,27 @@ public class UCIReceiver implements Runnable {
listeners.forEach(UCIListener::onRegistrationError); listeners.forEach(UCIListener::onRegistrationError);
break; break;
default: default:
System.err.printf("Unknown parameter '%s' for command 'registration' found!%n", line); System.err.printf(
"Unknown parameter '%s' for command 'registration' found!%n",
line
);
} }
} }
private void parseInfo(String line) { listeners.forEach(l -> l.onInfo(new UCIInfo(line))); } private void parseInfo(String line) {
listeners.forEach(l -> l.onInfo(new UCIInfo(line)));
}
private void parseOption(String line) { listeners.forEach(l -> l.onOption(new UCIOption((line)))); } private void parseOption(String line) {
listeners.forEach(l -> l.onOption(new UCIOption(line)));
}
/** /**
* Registers a UCI listener * Registers a UCI listener
* *
* @param listener the UCI listener to register * @param listener the UCI listener to register
*/ */
public void registerListener(UCIListener listener) { listeners.add(listener); } public void registerListener(UCIListener listener) {
listeners.add(listener);
}
} }

23
src/dev/kske/chess/ui/BoardComponent.java
View File

@ -49,15 +49,25 @@ public class BoardComponent extends JComponent {
g.setColor(Color.white); g.setColor(Color.white);
for (int i = 0; i < 8; i++) for (int i = 0; i < 8; i++)
for (int j = 0; j < 8; j++) { for (int j = 0; j < 8; j++) {
if (j > 0) g.setColor(g.getColor().equals(Color.white) ? Color.lightGray : Color.white); if (j > 0)
g.setColor(
g.getColor().equals(Color.white) ? Color.lightGray : Color.white
);
g.fillRect(tileSize * i, tileSize * j, tileSize, tileSize); g.fillRect(tileSize * i, tileSize * j, tileSize, tileSize);
} }
// Draw the pieces if a board is present // Draw the pieces if a board is present
if (board != null) for (int i = 0; i < 8; i++) if (board != null)
for (int j = 0; j < 8; j++) for (int i = 0; i < 8; i++)
if (board.getBoardArr()[i][j] != null) for (int j = 0; j < 8; j++)
g.drawImage(TextureUtil.getPieceTexture(board.getBoardArr()[i][j]), i * tileSize, j * tileSize, this); if (board.getBoardArr()[i][j] != null)
g.drawImage(
TextureUtil
.getPieceTexture(board.getBoardArr()[i][j]),
i * tileSize,
j * tileSize,
this
);
} }
/** /**
@ -66,7 +76,8 @@ public class BoardComponent extends JComponent {
public Board getBoard() { return board; } public Board getBoard() { return board; }
/** /**
* Sets the board rendered by this board component and repaints the component * Sets the board rendered by this board component and repaints the
* component
* *
* @param board the board rendered by this board component * @param board the board rendered by this board component
*/ */

12
src/dev/kske/chess/ui/BoardPane.java
View File

@ -19,8 +19,8 @@ public class BoardPane extends JLayeredPane {
private static final long serialVersionUID = -5415058382478806092L; private static final long serialVersionUID = -5415058382478806092L;
private final BoardComponent boardComponent; private final BoardComponent boardComponent;
private final OverlayComponent overlayComponent; private final OverlayComponent overlayComponent;
private int tileSize; private int tileSize;
@ -28,8 +28,8 @@ public class BoardPane extends JLayeredPane {
* Creates an instance of {@link BoardPane}. * Creates an instance of {@link BoardPane}.
*/ */
public BoardPane() { public BoardPane() {
boardComponent = new BoardComponent(this); boardComponent = new BoardComponent(this);
overlayComponent = new OverlayComponent(this); overlayComponent = new OverlayComponent(this);
setLayer(overlayComponent, 1); setLayer(overlayComponent, 1);
setLayout(null); setLayout(null);
@ -51,7 +51,9 @@ public class BoardPane extends JLayeredPane {
/** /**
* @return overlay component contained inside this board pane * @return overlay component contained inside this board pane
*/ */
public OverlayComponent getOverlayComponent() { return overlayComponent; } public OverlayComponent getOverlayComponent() {
return overlayComponent;
}
/** /**
* @return the size of an individual board tile in pixels * @return the size of an individual board tile in pixels

54
src/dev/kske/chess/ui/DialogUtil.java
View File

@ -28,7 +28,8 @@ public class DialogUtil {
/** /**
* Saves the last accessed folder for loading and saving game files. * Saves the last accessed folder for loading and saving game files.
*/ */
private static Preferences preferences = Preferences.userNodeForPackage(DialogUtil.class); private static Preferences preferences
= Preferences.userNodeForPackage(DialogUtil.class);
/** /**
* Displays a parameterized file opening dialog. * Displays a parameterized file opening dialog.
@ -37,7 +38,10 @@ public class DialogUtil {
* @param action the action executed with the selected files a its argument * @param action the action executed with the selected files a its argument
* @param filters the file extension filters passed to the dialog * @param filters the file extension filters passed to the dialog
*/ */
public static void showFileSelectionDialog(Component parent, Consumer<List<File>> action, Collection<FileNameExtensionFilter> filters) { public static void showFileSelectionDialog(
Component parent, Consumer<List<File>> action,
Collection<FileNameExtensionFilter> filters
) {
JFileChooser fileChooser = createFileChooser(filters); JFileChooser fileChooser = createFileChooser(filters);
if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION) { if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION) {
action.accept(Arrays.asList(fileChooser.getSelectedFile())); action.accept(Arrays.asList(fileChooser.getSelectedFile()));
@ -52,18 +56,29 @@ public class DialogUtil {
* @param action the action executed with the selected file a its argument * @param action the action executed with the selected file a its argument
* @param filters the file extension filters passed to the dialog * @param filters the file extension filters passed to the dialog
*/ */
public static void showFileSaveDialog(Component parent, Consumer<File> action, Collection<FileNameExtensionFilter> filters) { public static void showFileSaveDialog(
Component parent, Consumer<File> action,
Collection<FileNameExtensionFilter> filters
) {
JFileChooser fileChooser = createFileChooser(filters); JFileChooser fileChooser = createFileChooser(filters);
if (fileChooser.showSaveDialog(parent) == JFileChooser.APPROVE_OPTION) { if (fileChooser.showSaveDialog(parent) == JFileChooser.APPROVE_OPTION) {
action.accept(new File(fileChooser.getSelectedFile().getAbsolutePath() + "." action.accept(
+ ((FileNameExtensionFilter) fileChooser.getFileFilter()).getExtensions()[0])); new File(
fileChooser.getSelectedFile().getAbsolutePath() + "."
+ ((FileNameExtensionFilter) fileChooser
.getFileFilter()).getExtensions()[0]
)
);
preferences.put("path", fileChooser.getSelectedFile().getParent()); preferences.put("path", fileChooser.getSelectedFile().getParent());
} }
} }
private static JFileChooser createFileChooser(Collection<FileNameExtensionFilter> filters) { private static JFileChooser
createFileChooser(Collection<FileNameExtensionFilter> filters) {
JFileChooser fileChooser = new JFileChooser(); JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File(preferences.get("path", System.getProperty("user.home")))); fileChooser.setCurrentDirectory(
new File(preferences.get("path", System.getProperty("user.home")))
);
fileChooser.setAcceptAllFileFilterUsed(false); fileChooser.setAcceptAllFileFilterUsed(false);
filters.forEach(fileChooser::addChoosableFileFilter); filters.forEach(fileChooser::addChoosableFileFilter);
return fileChooser; return fileChooser;
@ -73,16 +88,21 @@ public class DialogUtil {
* Displays a dialog in which the user can select the player types for a * Displays a dialog in which the user can select the player types for a
* game.<br> * game.<br>
* <br> * <br>
* The dialog will always display {@code Natural Player} and {@code AIPlayer}, * The dialog will always display {@code Natural Player} and
* {@code AIPlayer},
* as well as all engine names stored by {@link EngineUtil}. * as well as all engine names stored by {@link EngineUtil}.
* *
* @param parent the parent component of the dialog * @param parent the parent component of the dialog
* @param action the action executed with the two selected names as arguments * @param action the action executed with the two selected names as
* arguments
*/ */
public static void showGameConfigurationDialog(Component parent, BiConsumer<String, String> action) { public static void showGameConfigurationDialog(
Component parent, BiConsumer<String, String> action
) {
JPanel dialogPanel = new JPanel(); JPanel dialogPanel = new JPanel();
List<String> options = new ArrayList<>(Arrays.asList("Natural Player", "AI Player")); List<String> options
= new ArrayList<>(Arrays.asList("Natural Player", "AI Player"));
EngineUtil.getEngineInfos().forEach(info -> options.add(info.name)); EngineUtil.getEngineInfos().forEach(info -> options.add(info.name));
JLabel lblWhite = new JLabel("White:"); JLabel lblWhite = new JLabel("White:");
@ -105,7 +125,15 @@ public class DialogUtil {
cbBlack.setBounds(98, 36, 159, 22); cbBlack.setBounds(98, 36, 159, 22);
dialogPanel.add(cbBlack); dialogPanel.add(cbBlack);
JOptionPane.showMessageDialog(parent, dialogPanel, "Game configuration", JOptionPane.QUESTION_MESSAGE); JOptionPane.showMessageDialog(
action.accept(options.get(cbWhite.getSelectedIndex()), options.get(cbBlack.getSelectedIndex())); parent,
dialogPanel,
"Game configuration",
JOptionPane.QUESTION_MESSAGE
);
action.accept(
options.get(cbWhite.getSelectedIndex()),
options.get(cbBlack.getSelectedIndex())
);
} }
} }

9
src/dev/kske/chess/ui/GameDropTarget.java
View File

@ -30,14 +30,19 @@ public class GameDropTarget extends DropTargetAdapter {
* @param mainWindow the {@link MainWindow} onto which {@code FEN} and * @param mainWindow the {@link MainWindow} onto which {@code FEN} and
* {@code PGN} files can be dropped * {@code PGN} files can be dropped
*/ */
public GameDropTarget(MainWindow mainWindow) { this.mainWindow = mainWindow; } public GameDropTarget(MainWindow mainWindow) {
this.mainWindow = mainWindow;
}
@SuppressWarnings("unchecked") @SuppressWarnings("unchecked")
@Override @Override
public void drop(DropTargetDropEvent evt) { public void drop(DropTargetDropEvent evt) {
try { try {
evt.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE); evt.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
mainWindow.loadFiles((List<File>) evt.getTransferable().getTransferData(DataFlavor.javaFileListFlavor)); mainWindow.loadFiles(
(List<File>) evt.getTransferable()
.getTransferData(DataFlavor.javaFileListFlavor)
);
} catch (UnsupportedFlavorException | IOException ex) { } catch (UnsupportedFlavorException | IOException ex) {
ex.printStackTrace(); ex.printStackTrace();
evt.rejectDrop(); evt.rejectDrop();

144
src/dev/kske/chess/ui/GamePane.java
View File

@ -31,12 +31,12 @@ public class GamePane extends JComponent {
private static final long serialVersionUID = 4349772338239617477L; private static final long serialVersionUID = 4349772338239617477L;
private JButton btnRestart, btnSwapColors; private JButton btnRestart, btnSwapColors;
private BoardPane boardPane; private BoardPane boardPane;
private Game game; private Game game;
private Color activeColor; private Color activeColor;
private JPanel moveSelectionPanel; private JPanel moveSelectionPanel;
private JButton btnFirst, btnPrevious, btnNext, btnLast; private JButton btnFirst, btnPrevious, btnNext, btnLast;
/** /**
* Creates an instance of {@link GamePane}. * Creates an instance of {@link GamePane}.
@ -45,15 +45,23 @@ public class GamePane extends JComponent {
activeColor = Color.WHITE; activeColor = Color.WHITE;
GridBagLayout gridBagLayout = new GridBagLayout(); GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[] { 450, 1, 0 }; gridBagLayout.columnWidths = new int[] {
gridBagLayout.rowHeights = new int[] { 33, 267, 1, 0 }; 450, 1, 0
gridBagLayout.columnWeights = new double[] { 0.0, 1.0, 1.0 }; };
gridBagLayout.rowWeights = new double[] { 1.0, 1.0, 1.0, Double.MIN_VALUE }; gridBagLayout.rowHeights = new int[] {
33, 267, 1, 0
};
gridBagLayout.columnWeights = new double[] {
0.0, 1.0, 1.0
};
gridBagLayout.rowWeights = new double[] {
1.0, 1.0, 1.0, Double.MIN_VALUE
};
setLayout(gridBagLayout); setLayout(gridBagLayout);
JPanel toolPanel = new JPanel(); JPanel toolPanel = new JPanel();
btnRestart = new JButton("Restart"); btnRestart = new JButton("Restart");
btnRestart.addActionListener((evt) -> { btnRestart.addActionListener(evt -> {
if (game != null) { if (game != null) {
game.reset(); game.reset();
game.start(); game.start();
@ -61,9 +69,10 @@ public class GamePane extends JComponent {
}); });
btnSwapColors = new JButton("Play as black"); btnSwapColors = new JButton("Play as black");
btnSwapColors.addActionListener((evt) -> { btnSwapColors.addActionListener(evt -> {
game.swapColors(); game.swapColors();
btnSwapColors.setText("Play as " + activeColor.toString().toLowerCase()); btnSwapColors
.setText("Play as " + activeColor.toString().toLowerCase());
activeColor = activeColor.opposite(); activeColor = activeColor.opposite();
}); });
@ -71,18 +80,18 @@ public class GamePane extends JComponent {
toolPanel.add(btnSwapColors); toolPanel.add(btnSwapColors);
GridBagConstraints gbc_toolPanel = new GridBagConstraints(); GridBagConstraints gbc_toolPanel = new GridBagConstraints();
gbc_toolPanel.anchor = GridBagConstraints.NORTH; gbc_toolPanel.anchor = GridBagConstraints.NORTH;
gbc_toolPanel.fill = GridBagConstraints.HORIZONTAL; gbc_toolPanel.fill = GridBagConstraints.HORIZONTAL;
gbc_toolPanel.gridx = 0; gbc_toolPanel.gridx = 0;
gbc_toolPanel.gridy = 0; gbc_toolPanel.gridy = 0;
gbc_toolPanel.gridwidth = 2; gbc_toolPanel.gridwidth = 2;
add(toolPanel, gbc_toolPanel); add(toolPanel, gbc_toolPanel);
moveSelectionPanel = new JPanel(); moveSelectionPanel = new JPanel();
GridBagConstraints gbc_moveSelectionPanel = new GridBagConstraints(); GridBagConstraints gbc_moveSelectionPanel = new GridBagConstraints();
gbc_moveSelectionPanel.fill = GridBagConstraints.BOTH; gbc_moveSelectionPanel.fill = GridBagConstraints.BOTH;
gbc_moveSelectionPanel.gridx = 2; gbc_moveSelectionPanel.gridx = 2;
gbc_moveSelectionPanel.gridy = 0; gbc_moveSelectionPanel.gridy = 0;
add(moveSelectionPanel, gbc_moveSelectionPanel); add(moveSelectionPanel, gbc_moveSelectionPanel);
btnFirst = new JButton("First"); btnFirst = new JButton("First");
@ -90,7 +99,7 @@ public class GamePane extends JComponent {
moveSelectionPanel.add(btnFirst); moveSelectionPanel.add(btnFirst);
btnPrevious = new JButton("Previous"); btnPrevious = new JButton("Previous");
btnPrevious.addActionListener((evt) -> { btnPrevious.addActionListener(evt -> {
if (game != null) { if (game != null) {
game.getBoard().selectPreviousNode(); game.getBoard().selectPreviousNode();
getBoardPane().getOverlayComponent().clearArrow(); getBoardPane().getOverlayComponent().clearArrow();
@ -100,12 +109,19 @@ public class GamePane extends JComponent {
moveSelectionPanel.add(btnPrevious); moveSelectionPanel.add(btnPrevious);
btnNext = new JButton("Next"); btnNext = new JButton("Next");
btnNext.addActionListener((evt) -> { btnNext.addActionListener(evt -> {
if (game != null) { if (game != null) {
int numVariations = game.getBoard().getLog().getLast().getVariations().size(); int numVariations
int index; = game.getBoard().getLog().getLast().getVariations().size();
if (numVariations == 1) index = 1; int index;
else index = Integer.parseInt(JOptionPane.showInputDialog("Enter the variation index.")); if (numVariations == 1)
index = 1;
else
index
= Integer.parseInt(
JOptionPane
.showInputDialog("Enter the variation index.")
);
game.getBoard().selectNextNode(index); game.getBoard().selectNextNode(index);
getBoardPane().getOverlayComponent().clearArrow(); getBoardPane().getOverlayComponent().clearArrow();
repaint(); repaint();
@ -119,25 +135,25 @@ public class GamePane extends JComponent {
boardPane = new BoardPane(); boardPane = new BoardPane();
GridBagConstraints gbc_boardPane = new GridBagConstraints(); GridBagConstraints gbc_boardPane = new GridBagConstraints();
gbc_boardPane.fill = GridBagConstraints.BOTH; gbc_boardPane.fill = GridBagConstraints.BOTH;
gbc_boardPane.gridx = 0; gbc_boardPane.gridx = 0;
gbc_boardPane.gridy = 1; gbc_boardPane.gridy = 1;
add(boardPane, gbc_boardPane); add(boardPane, gbc_boardPane);
JPanel numberPanel = new JPanel(new GridLayout(8, 1)); JPanel numberPanel = new JPanel(new GridLayout(8, 1));
GridBagConstraints gbc_numberPanel = new GridBagConstraints(); GridBagConstraints gbc_numberPanel = new GridBagConstraints();
gbc_numberPanel.anchor = GridBagConstraints.WEST; gbc_numberPanel.anchor = GridBagConstraints.WEST;
gbc_numberPanel.fill = GridBagConstraints.VERTICAL; gbc_numberPanel.fill = GridBagConstraints.VERTICAL;
gbc_numberPanel.gridx = 1; gbc_numberPanel.gridx = 1;
gbc_numberPanel.gridy = 1; gbc_numberPanel.gridy = 1;
add(numberPanel, gbc_numberPanel); add(numberPanel, gbc_numberPanel);
JPanel letterPanel = new JPanel(new GridLayout(1, 8)); JPanel letterPanel = new JPanel(new GridLayout(1, 8));
GridBagConstraints gbc_letterPanel = new GridBagConstraints(); GridBagConstraints gbc_letterPanel = new GridBagConstraints();
gbc_letterPanel.anchor = GridBagConstraints.NORTH; gbc_letterPanel.anchor = GridBagConstraints.NORTH;
gbc_letterPanel.fill = GridBagConstraints.HORIZONTAL; gbc_letterPanel.fill = GridBagConstraints.HORIZONTAL;
gbc_letterPanel.gridx = 0; gbc_letterPanel.gridx = 0;
gbc_letterPanel.gridy = 2; gbc_letterPanel.gridy = 2;
add(letterPanel, gbc_letterPanel); add(letterPanel, gbc_letterPanel);
// Initialize board coordinates // Initialize board coordinates
@ -147,12 +163,11 @@ public class GamePane extends JComponent {
letterLabel.setHorizontalAlignment(SwingConstants.CENTER); letterLabel.setHorizontalAlignment(SwingConstants.CENTER);
letterPanel.add(letterLabel); letterPanel.add(letterLabel);
} }
JScrollPane scrollPane = new JScrollPane();
JScrollPane scrollPane = new JScrollPane(); GridBagConstraints gbc_scrollPane = new GridBagConstraints();
GridBagConstraints gbc_scrollPane = new GridBagConstraints(); gbc_scrollPane.fill = GridBagConstraints.BOTH;
gbc_scrollPane.fill = GridBagConstraints.BOTH; gbc_scrollPane.gridx = 2;
gbc_scrollPane.gridx = 2; gbc_scrollPane.gridy = 1;
gbc_scrollPane.gridy = 1;
add(scrollPane, gbc_scrollPane); add(scrollPane, gbc_scrollPane);
JList<MoveNode> pgnList = new JList<>(); JList<MoveNode> pgnList = new JList<>();
@ -162,19 +177,28 @@ public class GamePane extends JComponent {
pgnList.setCellRenderer(new MoveNodeRenderer()); pgnList.setCellRenderer(new MoveNodeRenderer());
scrollPane.setViewportView(pgnList); scrollPane.setViewportView(pgnList);
// Listen to moves and game (re-)starts and update the move list or disable the // Listen to moves and game (re-)starts and update the move list or
// disable the
// color switching buttons if necessary // color switching buttons if necessary
EventBus.getInstance().register(new Subscriber() { EventBus.getInstance().register(new Subscriber() {
@Override @Override
public void handle(Event<?> event) { public void handle(Event<?> event) {
if (event instanceof MoveEvent && (((MoveEvent) event).getBoardState() == BoardState.CHECKMATE if (
|| ((MoveEvent) event).getBoardState() == BoardState.STALEMATE)) event instanceof MoveEvent && (((MoveEvent) event)
.getBoardState() == BoardState.CHECKMATE
|| ((MoveEvent) event)
.getBoardState() == BoardState.STALEMATE)
)
btnSwapColors.setEnabled(false); btnSwapColors.setEnabled(false);
else if (event instanceof GameStartEvent) btnSwapColors.setEnabled( else
game.getPlayers().get(Color.WHITE) instanceof NaturalPlayer ^ game.getPlayers().get(Color.BLACK) instanceof NaturalPlayer); if (event instanceof GameStartEvent)
btnSwapColors.setEnabled(
game.getPlayers().get(Color.WHITE) instanceof NaturalPlayer ^ game.getPlayers().get(Color.BLACK) instanceof NaturalPlayer
);
if (game.getBoard().getLog() == null) return; if (game.getBoard().getLog() == null)
return;
DefaultListModel<MoveNode> model = new DefaultListModel<>(); DefaultListModel<MoveNode> model = new DefaultListModel<>();
game.getBoard().getLog().forEach(model::addElement); game.getBoard().getLog().forEach(model::addElement);
@ -182,7 +206,11 @@ public class GamePane extends JComponent {
} }
@Override @Override
public Set<Class<?>> supports() { return new HashSet<>(Arrays.asList(MoveEvent.class, GameStartEvent.class)); } public Set<Class<?>> supports() {
return new HashSet<>(
Arrays.asList(MoveEvent.class, GameStartEvent.class)
);
}
}); });
} }
@ -197,13 +225,15 @@ public class GamePane extends JComponent {
public Game getGame() { return game; } public Game getGame() { return game; }
/** /**
* Assigns a new {@link Game} instance to this game pane. If exactly one of the * Assigns a new {@link Game} instance to this game pane. If exactly one of
* the
* players is natural, color swapping functionality is enabled. * players is natural, color swapping functionality is enabled.
* *
* @param game The {@link Game} to assign to this game pane. * @param game The {@link Game} to assign to this game pane.
*/ */
public void setGame(Game game) { public void setGame(Game game) {
if (this.game != null) this.game.stop(); if (this.game != null)
this.game.stop();
this.game = game; this.game = game;
} }
} }

37
src/dev/kske/chess/ui/GameTabComponent.java
View File

@ -30,7 +30,8 @@ public class GameTabComponent extends JPanel {
*/ */
public GameTabComponent(JTabbedPane tabbedPane) { public GameTabComponent(JTabbedPane tabbedPane) {
super(new FlowLayout(FlowLayout.LEFT, 0, 0)); super(new FlowLayout(FlowLayout.LEFT, 0, 0));
if (tabbedPane == null) throw new NullPointerException("TabbedPane is null"); if (tabbedPane == null)
throw new NullPointerException("TabbedPane is null");
this.tabbedPane = tabbedPane; this.tabbedPane = tabbedPane;
// Create title JLabel // Create title JLabel
@ -68,13 +69,21 @@ public class GameTabComponent extends JPanel {
addMouseListener(new MouseAdapter() { addMouseListener(new MouseAdapter() {
@Override @Override
public void mouseEntered(MouseEvent evt) { setBorderPainted(true); } public void mouseEntered(MouseEvent evt) {
setBorderPainted(true);
}
@Override @Override
public void mouseExited(MouseEvent evt) { setBorderPainted(false); } public void mouseExited(MouseEvent evt) {
setBorderPainted(false);
}
}); });
setRolloverEnabled(true); setRolloverEnabled(true);
addActionListener((evt) -> { int i = tabbedPane.indexOfTabComponent(GameTabComponent.this); if (i != -1) tabbedPane.remove(i); }); addActionListener(evt -> {
int i = tabbedPane.indexOfTabComponent(GameTabComponent.this);
if (i != -1)
tabbedPane.remove(i);
});
} }
@Override @Override
@ -85,13 +94,25 @@ public class GameTabComponent extends JPanel {
super.paintComponent(g); super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g.create(); Graphics2D g2 = (Graphics2D) g.create();
// shift the image for pressed buttons // shift the image for pressed buttons
if (getModel().isPressed()) { g2.translate(1, 1); } if (getModel().isPressed())
g2.translate(1, 1);
g2.setStroke(new BasicStroke(2)); g2.setStroke(new BasicStroke(2));
g2.setColor(Color.BLACK); g2.setColor(Color.BLACK);
if (getModel().isRollover()) { g2.setColor(Color.MAGENTA); } if (getModel().isRollover())
g2.setColor(Color.MAGENTA);
final int delta = 6; final int delta = 6;
g2.drawLine(delta, delta, getWidth() - delta - 1, getHeight() - delta - 1); g2.drawLine(
g2.drawLine(getWidth() - delta - 1, delta, delta, getHeight() - delta - 1); delta,
delta,
getWidth() - delta - 1,
getHeight() - delta - 1
);
g2.drawLine(
getWidth() - delta - 1,
delta,
delta,
getHeight() - delta - 1
);
g2.dispose(); g2.dispose();
} }
} }

156
src/dev/kske/chess/ui/MainWindow.java
View File

@ -37,7 +37,9 @@ public class MainWindow extends JFrame {
* *
* @param args command line arguments are ignored * @param args command line arguments are ignored
*/ */
public static void main(String[] args) { SwingUtilities.invokeLater(MainWindow::new); } public static void main(String[] args) {
SwingUtilities.invokeLater(MainWindow::new);
}
/** /**
* Create the application. * Create the application.
@ -48,8 +50,11 @@ public class MainWindow extends JFrame {
// Configure frame // Configure frame
setResizable(false); setResizable(false);
setBounds(100, 100, 494, 565); setBounds(100, 100, 494, 565);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/pieces/queen_white.png"))); setIconImage(
Toolkit.getDefaultToolkit()
.getImage(getClass().getResource("/pieces/queen_white.png"))
);
// Add tabbed pane, menu bar and drop target // Add tabbed pane, menu bar and drop target
getContentPane().add(tabbedPane); getContentPane().add(tabbedPane);
@ -65,7 +70,9 @@ public class MainWindow extends JFrame {
/** /**
* @return the currently selected {@link GamePane} component * @return the currently selected {@link GamePane} component
*/ */
public GamePane getSelectedGamePane() { return (GamePane) tabbedPane.getSelectedComponent(); } public GamePane getSelectedGamePane() {
return (GamePane) tabbedPane.getSelectedComponent();
}
/** /**
* Creates a new {@link GamePane}, adds it to the tabbed pane and opens it. * Creates a new {@link GamePane}, adds it to the tabbed pane and opens it.
@ -73,7 +80,9 @@ public class MainWindow extends JFrame {
* *
* @return the new {@link GamePane} * @return the new {@link GamePane}
*/ */
public GamePane addGamePane() { return addGamePane("Game " + (tabbedPane.getTabCount() + 1)); } public GamePane addGamePane() {
return addGamePane("Game " + (tabbedPane.getTabCount() + 1));
}
/** /**
* Creates a new {@link GamePane}, adds it to the tabbed pane and opens it. * Creates a new {@link GamePane}, adds it to the tabbed pane and opens it.
@ -84,13 +93,17 @@ public class MainWindow extends JFrame {
public GamePane addGamePane(String title) { public GamePane addGamePane(String title) {
GamePane gamePane = new GamePane(); GamePane gamePane = new GamePane();
tabbedPane.add(title, gamePane); tabbedPane.add(title, gamePane);
tabbedPane.setTabComponentAt(tabbedPane.getTabCount() - 1, new GameTabComponent(tabbedPane)); tabbedPane.setTabComponentAt(
tabbedPane.getTabCount() - 1,
new GameTabComponent(tabbedPane)
);
tabbedPane.setSelectedIndex(tabbedPane.getTabCount() - 1); tabbedPane.setSelectedIndex(tabbedPane.getTabCount() - 1);
return gamePane; return gamePane;
} }
/** /**
* Creates a new {@link GamePane}, adds it to the tabbed pane and immediately * Creates a new {@link GamePane}, adds it to the tabbed pane and
* immediately
* displays a game configuration dialog for a new game on an existing * displays a game configuration dialog for a new game on an existing
* {@link Board}. * {@link Board}.
* *
@ -100,12 +113,19 @@ public class MainWindow extends JFrame {
*/ */
public GamePane addGamePane(String title, Board board) { public GamePane addGamePane(String title, Board board) {
GamePane gamePane = addGamePane(title); GamePane gamePane = addGamePane(title);
DialogUtil.showGameConfigurationDialog(this, DialogUtil.showGameConfigurationDialog(
(whiteName, blackName) -> { this,
Game game = new Game(gamePane.getBoardPane(), whiteName, blackName, board); (whiteName, blackName) -> {
gamePane.setGame(game); Game game = new Game(
game.start(); gamePane.getBoardPane(),
}); whiteName,
blackName,
board
);
gamePane.setGame(game);
game.start();
}
);
return gamePane; return gamePane;
} }
@ -114,7 +134,9 @@ public class MainWindow extends JFrame {
* *
* @param index The index of the {@link GamePane} to remove * @param index The index of the {@link GamePane} to remove
*/ */
public void removeGamePane(int index) { tabbedPane.remove(index); } public void removeGamePane(int index) {
tabbedPane.remove(index);
}
/** /**
* Loads a game file (FEN or PGN) and adds it to a new {@link GamePane}. * Loads a game file (FEN or PGN) and adds it to a new {@link GamePane}.
@ -123,38 +145,66 @@ public class MainWindow extends JFrame {
*/ */
public void loadFiles(List<File> files) { public void loadFiles(List<File> files) {
files.forEach(file -> { files.forEach(file -> {
final String name = file.getName().substring(0, file.getName().lastIndexOf('.')); final String name
final String extension = file.getName().substring(file.getName().lastIndexOf('.')).toLowerCase(); = file.getName().substring(0, file.getName().lastIndexOf('.'));
final String extension = file.getName()
.substring(file.getName().lastIndexOf('.'))
.toLowerCase();
try { try {
Board board; Board board;
switch (extension) { switch (extension) {
case ".fen": case ".fen":
board = new FENString(new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8)).getBoard(); board = new FENString(
new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8)
).getBoard();
break; break;
case ".pgn": case ".pgn":
PGNDatabase pgnDB = new PGNDatabase(); PGNDatabase pgnDB = new PGNDatabase();
pgnDB.load(file); pgnDB.load(file);
if (pgnDB.getGames().size() > 0) { if (pgnDB.getGames().size() > 0) {
String[] gameNames = new String[pgnDB.getGames().size()]; String[] gameNames
= new String[pgnDB.getGames().size()];
for (int i = 0; i < gameNames.length; i++) { for (int i = 0; i < gameNames.length; i++) {
final PGNGame game = pgnDB.getGames().get(i); final PGNGame game = pgnDB.getGames().get(i);
gameNames[i] = String.format("%s vs %s: %s", game.getTag("White"), game.getTag("Black"), game.getTag("Result")); gameNames[i] = String.format(
"%s vs %s: %s",
game.getTag("White"),
game.getTag("Black"),
game.getTag("Result")
);
} }
JComboBox<String> comboBox = new JComboBox<>(gameNames); JComboBox<String> comboBox
JOptionPane.showMessageDialog(this, comboBox, "Select a game", JOptionPane.QUESTION_MESSAGE); = new JComboBox<>(gameNames);
board = pgnDB.getGames().get(comboBox.getSelectedIndex()).getBoard(); JOptionPane.showMessageDialog(
} else throw new ChessException("The PGN database '" + name + "' is empty!"); this,
comboBox,
"Select a game",
JOptionPane.QUESTION_MESSAGE
);
board = pgnDB.getGames()
.get(comboBox.getSelectedIndex())
.getBoard();
} else
throw new ChessException(
"The PGN database '" + name + "' is empty!"
);
break; break;
default: default:
throw new ChessException("The file extension '" + extension + "' is not supported!"); throw new ChessException(
"The file extension '" + extension
+ "' is not supported!"
);
} }
addGamePane(name, board); addGamePane(name, board);
} catch (Exception e) { } catch (Exception e) {
e.printStackTrace(); e.printStackTrace();
JOptionPane.showMessageDialog(this, JOptionPane.showMessageDialog(
"Failed to load the file " + file.getName() + ": " + e.toString(), this,
"File loading error", "Failed to load the file " + file.getName() + ": "
JOptionPane.ERROR_MESSAGE); + e.toString(),
"File loading error",
JOptionPane.ERROR_MESSAGE
);
} }
}); });
} }
@ -166,28 +216,40 @@ public class MainWindow extends JFrame {
* @param file the file in which to save the current {@link Game} * @param file the file in which to save the current {@link Game}
*/ */
public void saveFile(File file) { public void saveFile(File file) {
final int dotIndex = file.getName().lastIndexOf('.'); final int dotIndex = file.getName().lastIndexOf('.');
final String extension = file.getName().substring(dotIndex).toLowerCase(); final String extension
= file.getName().substring(dotIndex).toLowerCase();
if (extension.equals(".pgn")) try { if (extension.equals(".pgn"))
PGNGame pgnGame = new PGNGame(getSelectedGamePane().getGame().getBoard()); try {
pgnGame.setTag("Event", tabbedPane.getTitleAt(tabbedPane.getSelectedIndex())); PGNGame pgnGame
pgnGame.setTag("Result", "*"); = new PGNGame(getSelectedGamePane().getGame().getBoard());
PGNDatabase pgnDB = new PGNDatabase(); pgnGame.setTag(
pgnDB.getGames().add(pgnGame); "Event",
pgnDB.save(file); tabbedPane.getTitleAt(tabbedPane.getSelectedIndex())
);
pgnGame.setTag("Result", "*");
PGNDatabase pgnDB = new PGNDatabase();
pgnDB.getGames().add(pgnGame);
pgnDB.save(file);
if (JOptionPane.showConfirmDialog(this, if (
"Game export finished. Do you want to view the created file?", JOptionPane.showConfirmDialog(
"Game export finished", this,
JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) "Game export finished. Do you want to view the created file?",
Desktop.getDesktop().open(file); "Game export finished",
} catch (IOException e) { JOptionPane.YES_NO_OPTION
e.printStackTrace(); ) == JOptionPane.YES_OPTION
JOptionPane.showMessageDialog(this, )
Desktop.getDesktop().open(file);
} catch (IOException e) {
e.printStackTrace();
JOptionPane.showMessageDialog(
this,
"Failed to save the file " + file.getName() + ": " + e, "Failed to save the file " + file.getName() + ": " + e,
"File saving error", "File saving error",
JOptionPane.ERROR_MESSAGE); JOptionPane.ERROR_MESSAGE
} );
}
} }
} }

118
src/dev/kske/chess/ui/MenuBar.java
View File

@ -43,25 +43,52 @@ public class MenuBar extends JMenuBar {
JMenu gameMenu = new JMenu("Game"); JMenu gameMenu = new JMenu("Game");
JMenuItem newGameMenuItem = new JMenuItem("New Game"); JMenuItem newGameMenuItem = new JMenuItem("New Game");
newGameMenuItem.addActionListener((evt) -> DialogUtil.showGameConfigurationDialog(mainWindow, (whiteName, blackName) -> { newGameMenuItem.addActionListener(
GamePane gamePane = mainWindow.addGamePane(); evt -> DialogUtil.showGameConfigurationDialog(
Game game = new Game(gamePane.getBoardPane(), whiteName, blackName); mainWindow,
gamePane.setGame(game); (whiteName, blackName) -> {
game.start(); GamePane gamePane = mainWindow.addGamePane();
})); Game game = new Game(
gamePane.getBoardPane(),
whiteName,
blackName
);
gamePane.setGame(game);
game.start();
}
)
);
gameMenu.add(newGameMenuItem); gameMenu.add(newGameMenuItem);
JMenuItem loadFileMenu = new JMenuItem("Load game file"); JMenuItem loadFileMenu = new JMenuItem("Load game file");
loadFileMenu.addActionListener((evt) -> DialogUtil loadFileMenu.addActionListener(
.showFileSelectionDialog(mainWindow, evt -> DialogUtil
.showFileSelectionDialog(
mainWindow,
mainWindow::loadFiles, mainWindow::loadFiles,
Arrays.asList(new FileNameExtensionFilter("FEN and PGN files", "fen", "pgn")))); Arrays.asList(
new FileNameExtensionFilter(
"FEN and PGN files",
"fen",
"pgn"
)
)
)
);
gameMenu.add(loadFileMenu); gameMenu.add(loadFileMenu);
JMenuItem saveFileMenu = new JMenuItem("Save game file"); JMenuItem saveFileMenu = new JMenuItem("Save game file");
saveFileMenu saveFileMenu
.addActionListener((evt) -> DialogUtil .addActionListener(
.showFileSaveDialog(mainWindow, mainWindow::saveFile, Arrays.asList(new FileNameExtensionFilter("PGN file", "pgn")))); evt -> DialogUtil
.showFileSaveDialog(
mainWindow,
mainWindow::saveFile,
Arrays.asList(
new FileNameExtensionFilter("PGN file", "pgn")
)
)
);
gameMenu.add(saveFileMenu); gameMenu.add(saveFileMenu);
add(gameMenu); add(gameMenu);
@ -72,10 +99,16 @@ public class MenuBar extends JMenuBar {
JMenu engineMenu = new JMenu("Engine"); JMenu engineMenu = new JMenu("Engine");
JMenuItem addEngineMenuItem = new JMenuItem("Add engine"); JMenuItem addEngineMenuItem = new JMenuItem("Add engine");
addEngineMenuItem.addActionListener((evt) -> { addEngineMenuItem.addActionListener(evt -> {
String enginePath = JOptionPane String enginePath = JOptionPane
.showInputDialog(getParent(), "Enter the path to a UCI-compatible chess engine:", "Engine selection", JOptionPane.QUESTION_MESSAGE); .showInputDialog(
if (enginePath != null) EngineUtil.addEngine(enginePath); getParent(),
"Enter the path to a UCI-compatible chess engine:",
"Engine selection",
JOptionPane.QUESTION_MESSAGE
);
if (enginePath != null)
EngineUtil.addEngine(enginePath);
}); });
JMenuItem showInfoMenuItem = new JMenuItem("Show engine info"); JMenuItem showInfoMenuItem = new JMenuItem("Show engine info");
@ -89,29 +122,50 @@ public class MenuBar extends JMenuBar {
JMenu toolsMenu = new JMenu("Tools"); JMenu toolsMenu = new JMenu("Tools");
JMenuItem exportFENMenuItem = new JMenuItem("Export board to FEN"); JMenuItem exportFENMenuItem = new JMenuItem("Export board to FEN");
exportFENMenuItem.addActionListener((evt) -> { exportFENMenuItem.addActionListener(evt -> {
final String fen = new FENString(mainWindow.getSelectedGamePane().getGame().getBoard()).toString(); final String fen = new FENString(
Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new StringSelection(fen), null); mainWindow.getSelectedGamePane().getGame().getBoard()
JOptionPane.showMessageDialog(mainWindow, String.format("FEN-string copied to clipboard!%n%s", fen)); ).toString();
Toolkit.getDefaultToolkit()
.getSystemClipboard()
.setContents(new StringSelection(fen), null);
JOptionPane.showMessageDialog(
mainWindow,
String.format("FEN-string copied to clipboard!%n%s", fen)
);
}); });
toolsMenu.add(exportFENMenuItem); toolsMenu.add(exportFENMenuItem);
JMenuItem loadFromFENMenuItem = new JMenuItem("Load board from FEN"); JMenuItem loadFromFENMenuItem = new JMenuItem("Load board from FEN");
loadFromFENMenuItem.addActionListener((evt) -> { loadFromFENMenuItem.addActionListener(evt -> {
final GamePane gamePane = mainWindow.addGamePane(); final GamePane gamePane = mainWindow.addGamePane();
final String fen = JOptionPane.showInputDialog("Enter a FEN string: "); final String fen
DialogUtil.showGameConfigurationDialog(mainWindow, (whiteName, blackName) -> { = JOptionPane.showInputDialog("Enter a FEN string: ");
Game game; DialogUtil.showGameConfigurationDialog(
try { mainWindow,
game = new Game(gamePane.getBoardPane(), whiteName, blackName, new FENString(fen).getBoard()); (whiteName, blackName) -> {
gamePane.setGame(game); Game game;
game.start(); try {
} catch (ChessException e) { game = new Game(
e.printStackTrace(); gamePane.getBoardPane(),
JOptionPane whiteName,
.showMessageDialog(mainWindow, "Failed to load FEN string: " + e.toString(), "FEN loading error", JOptionPane.ERROR_MESSAGE); blackName,
new FENString(fen).getBoard()
);
gamePane.setGame(game);
game.start();
} catch (ChessException e) {
e.printStackTrace();
JOptionPane
.showMessageDialog(
mainWindow,
"Failed to load FEN string: " + e.toString(),
"FEN loading error",
JOptionPane.ERROR_MESSAGE
);
}
} }
}); );
}); });
toolsMenu.add(loadFromFENMenuItem); toolsMenu.add(loadFromFENMenuItem);

12
src/dev/kske/chess/ui/MoveNodeRenderer.java
View File

@ -18,16 +18,20 @@ import dev.kske.chess.board.MoveNode;
* @since Chess v0.5-alpha * @since Chess v0.5-alpha
* @author Kai S. K. Engelbart * @author Kai S. K. Engelbart
*/ */
public class MoveNodeRenderer extends JLabel implements ListCellRenderer<MoveNode> { public class MoveNodeRenderer extends JLabel
implements ListCellRenderer<MoveNode> {
private static final long serialVersionUID = 5242015788752442446L; private static final long serialVersionUID = 5242015788752442446L;
@Override @Override
public Component getListCellRendererComponent(JList<? extends MoveNode> list, MoveNode node, int index, public Component getListCellRendererComponent(
boolean isSelected, boolean cellHasFocus) { JList<? extends MoveNode> list, MoveNode node, int index,
boolean isSelected, boolean cellHasFocus
) {
setBorder(new EmptyBorder(5, 5, 5, 5)); setBorder(new EmptyBorder(5, 5, 5, 5));
int numVariations = node.hasVariations() ? node.getVariations().size() : 0; int numVariations
= node.hasVariations() ? node.getVariations().size() : 0;
setText(String.format("%s (%d)", node.move.toLAN(), numVariations)); setText(String.format("%s (%d)", node.move.toLAN(), numVariations));
setBackground(isSelected ? Color.red : Color.white); setBackground(isSelected ? Color.red : Color.white);

53
src/dev/kske/chess/ui/OverlayComponent.java
View File

@ -24,8 +24,8 @@ public class OverlayComponent extends JComponent {
private final BoardPane boardPane; private final BoardPane boardPane;
private List<Position> dots; private List<Position> dots;
private Move arrow; private Move arrow;
/** /**
* Creates an instance of {@link OverlayComponent}. * Creates an instance of {@link OverlayComponent}.
@ -48,15 +48,31 @@ public class OverlayComponent extends JComponent {
// Draw an arrow representing the last move and mark its position and // Draw an arrow representing the last move and mark its position and
// destination // destination
if (arrow != null) { if (arrow != null) {
Point pos = new Point(arrow.getPos().x * tileSize + tileSize / 2, arrow.getPos().y * tileSize + tileSize / 2); Point pos = new Point(
Point dest = new Point(arrow.getDest().x * tileSize + tileSize / 2, arrow.getDest().y * tileSize + tileSize / 2); arrow.getPos().x * tileSize + tileSize / 2,
arrow.getPos().y * tileSize + tileSize / 2
);
Point dest = new Point(
arrow.getDest().x * tileSize + tileSize / 2,
arrow.getDest().y * tileSize + tileSize / 2
);
Graphics2D g2d = (Graphics2D) g; Graphics2D g2d = (Graphics2D) g;
g2d.setStroke(new BasicStroke(3)); g2d.setStroke(new BasicStroke(3));
g2d.setColor(Color.yellow); g2d.setColor(Color.yellow);
g2d.drawRect(arrow.getPos().x * tileSize, arrow.getPos().y * tileSize, tileSize, tileSize); g2d.drawRect(
g2d.drawRect(arrow.getDest().x * tileSize, arrow.getDest().y * tileSize, tileSize, tileSize); arrow.getPos().x * tileSize,
arrow.getPos().y * tileSize,
tileSize,
tileSize
);
g2d.drawRect(
arrow.getDest().x * tileSize,
arrow.getDest().y * tileSize,
tileSize,
tileSize
);
Shape arrowShape = createArrowShape(pos, dest); Shape arrowShape = createArrowShape(pos, dest);
g.setColor(new Color(255, 0, 0, 127)); g.setColor(new Color(255, 0, 0, 127));
@ -64,16 +80,17 @@ public class OverlayComponent extends JComponent {
g2d.setColor(Color.black); g2d.setColor(Color.black);
g2d.draw(arrowShape); g2d.draw(arrowShape);
} }
// Draw possible moves if a piece was selected // Draw possible moves if a piece was selected
if (!dots.isEmpty()) { if (!dots.isEmpty()) {
g.setColor(Color.green); g.setColor(Color.green);
int radius = tileSize / 4; int radius = tileSize / 4;
for (Position dot : dots) for (Position dot : dots)
g.fillOval(dot.x * tileSize + tileSize / 2 - radius / 2, g.fillOval(
dot.y * tileSize + tileSize / 2 - radius / 2, dot.x * tileSize + tileSize / 2 - radius / 2,
radius, dot.y * tileSize + tileSize / 2 - radius / 2,
radius); radius,
radius
);
} }
} }
@ -89,10 +106,11 @@ public class OverlayComponent extends JComponent {
Point midPoint = midpoint(pos, dest); Point midPoint = midpoint(pos, dest);
double rotate = Math.atan2(dest.y - pos.y, dest.x - pos.x); double rotate = Math.atan2(dest.y - pos.y, dest.x - pos.x);
double ptDistance = pos.distance(dest); double ptDistance = pos.distance(dest);
double scale = ptDistance / 12.0; // 12 because it's the length of the arrow double scale = ptDistance / 12.0; // 12 because it's the length of the
// polygon. // arrow
// polygon.
AffineTransform transform = new AffineTransform(); AffineTransform transform = new AffineTransform();
@ -104,7 +122,10 @@ public class OverlayComponent extends JComponent {
} }
private Point midpoint(Point p1, Point p2) { private Point midpoint(Point p1, Point p2) {
return new Point((int) ((p1.x + p2.x) / 2.0), (int) ((p1.y + p2.y) / 2.0)); return new Point(
(int) ((p1.x + p2.x) / 2.0),
(int) ((p1.y + p2.y) / 2.0)
);
} }
/** /**

5
test/dev/kske/chess/board/BoardTest.java
View File

@ -37,6 +37,9 @@ class BoardTest {
clone.getBoardArr()[0][0] = new Queen(Color.BLACK, clone); clone.getBoardArr()[0][0] = new Queen(Color.BLACK, clone);
clone.move(new Move(1, 1, 1, 2)); clone.move(new Move(1, 1, 1, 2));
assertNotEquals(clone.getBoardArr()[0][0], board.getBoardArr()[0][0]); assertNotEquals(clone.getBoardArr()[0][0], board.getBoardArr()[0][0]);
assertNotEquals(clone.getLog().getActiveColor(), board.getLog().getActiveColor()); assertNotEquals(
clone.getLog().getActiveColor(),
board.getLog().getActiveColor()
);
} }
} }

20
test/dev/kske/chess/board/FENStringTest.java
View File

@ -21,8 +21,8 @@ import dev.kske.chess.exception.ChessException;
*/ */
class FENStringTest { class FENStringTest {
private List<String> fenStrings = new ArrayList<>(); private List<String> fenStrings = new ArrayList<>();
private List<Board> boards = new ArrayList<>(); private List<Board> boards = new ArrayList<>();
/** /**
* Removes all pieces from a board * Removes all pieces from a board
@ -40,7 +40,11 @@ class FENStringTest {
*/ */
@BeforeEach @BeforeEach
void setUp() throws Exception { void setUp() throws Exception {
fenStrings.addAll(Arrays.asList("rnbqkbnr/pp1ppppp/8/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2")); fenStrings.addAll(
Arrays.asList(
"rnbqkbnr/pp1ppppp/8/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2"
)
);
Board board = new Board(); Board board = new Board();
board.set(Position.fromLAN("c7"), null); board.set(Position.fromLAN("c7"), null);
board.set(Position.fromLAN("c5"), new Pawn(Color.BLACK, board)); board.set(Position.fromLAN("c5"), new Pawn(Color.BLACK, board));
@ -61,7 +65,10 @@ class FENStringTest {
@Test @Test
void testToString() { void testToString() {
for (int i = 0; i < fenStrings.size(); i++) for (int i = 0; i < fenStrings.size(); i++)
assertEquals(fenStrings.get(i), new FENString(boards.get(i)).toString()); assertEquals(
fenStrings.get(i),
new FENString(boards.get(i)).toString()
);
} }
/** /**
@ -72,6 +79,9 @@ class FENStringTest {
@Test @Test
void testGetBoard() throws ChessException { void testGetBoard() throws ChessException {
for (int i = 0; i < boards.size(); i++) for (int i = 0; i < boards.size(); i++)
assertEquals(boards.get(i), new FENString(fenStrings.get(i)).getBoard()); assertEquals(
boards.get(i),
new FENString(fenStrings.get(i)).getBoard()
);
} }
} }

8
test/dev/kske/chess/board/LogTest.java
View File

@ -44,7 +44,10 @@ class LogTest {
other.add(Move.fromLAN("a2a4"), new Pawn(Color.WHITE, null), null); other.add(Move.fromLAN("a2a4"), new Pawn(Color.WHITE, null), null);
other.add(Move.fromLAN("a4a5"), new Pawn(Color.WHITE, null), null); other.add(Move.fromLAN("a4a5"), new Pawn(Color.WHITE, null), null);
assertNotEquals(log.getRoot(), other.getRoot()); assertNotEquals(log.getRoot(), other.getRoot());
assertNotEquals(log.getRoot().getVariations(), other.getRoot().getVariations()); assertNotEquals(
log.getRoot().getVariations(),
other.getRoot().getVariations()
);
} }
/** /**
@ -120,7 +123,8 @@ class LogTest {
} }
/** /**
* Test method for {@link Log#setActiveColor(dev.kske.chess.board.Piece.Color)}. * Test method for
* {@link Log#setActiveColor(dev.kske.chess.board.Piece.Color)}.
*/ */
@Test @Test
void testSetActiveColor() { void testSetActiveColor() {

17
test/dev/kske/chess/board/PositionTest.java
View File

@ -12,10 +12,19 @@ import org.junit.jupiter.api.Test;
*/ */
class PositionTest { class PositionTest {
private final int n = 4; private final int n = 4;
private Position[] positions = new Position[] { new Position(0, 0), new Position(7, 7), new Position(0, 7), new Position(7, 0) }; private Position[] positions = new Position[] {
private String[] sans = new String[] { "a8", "h1", "a1", "h8" }; new Position(0, 0),
private String[] strings = new String[] { "[0, 0]", "[7, 7]", "[0, 7]", "[7, 0]" }; new Position(7, 7),
new Position(0, 7),
new Position(7, 0)
};
private String[] sans = new String[] {
"a8", "h1", "a1", "h8"
};
private String[] strings = new String[] {
"[0, 0]", "[7, 7]", "[0, 7]", "[7, 0]"
};
/** /**
* Test method for * Test method for

7
test/dev/kske/chess/pgn/PGNDatabaseTest.java
View File

@ -16,7 +16,8 @@ import dev.kske.chess.exception.ChessException;
class PGNDatabaseTest { class PGNDatabaseTest {
/** /**
* Test method for {@link dev.kske.chess.pgn.PGNDatabase#load(java.io.File)}. * Test method for
* {@link dev.kske.chess.pgn.PGNDatabase#load(java.io.File)}.
* *
* @throws ChessException if an error occurs while parsing the file * @throws ChessException if an error occurs while parsing the file
* @throws FileNotFoundException if the test file {@code test.pgn} is not * @throws FileNotFoundException if the test file {@code test.pgn} is not
@ -25,6 +26,8 @@ class PGNDatabaseTest {
@Test @Test
void testLoad() throws FileNotFoundException, ChessException { void testLoad() throws FileNotFoundException, ChessException {
PGNDatabase db = new PGNDatabase(); PGNDatabase db = new PGNDatabase();
db.load(new File(getClass().getClassLoader().getResource("test.pgn").getFile())); db.load(
new File(getClass().getClassLoader().getResource("test.pgn").getFile())
);
} }
} }