103 lines
2.4 KiB
Java
103 lines
2.4 KiB
Java
package dev.kske.chess.board;
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import java.util.Iterator;
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import java.util.List;
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/**
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* Project: <strong>Chess</strong><br>
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* File: <strong>Piece.java</strong><br>
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* Created: <strong>01.07.2019</strong><br>
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* Author: <strong>Kai S. K. Engelbart</strong>
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*/
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public abstract class Piece implements Cloneable {
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private final Color color;
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protected Board board;
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private int moveCounter;
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public Piece(Color color, Board board) {
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this.color = color;
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this.board = board;
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}
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public List<Move> getMoves(Position pos) {
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List<Move> moves = getPseudolegalMoves(pos);
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for (Iterator<Move> iterator = moves.iterator(); iterator.hasNext();) {
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Move move = iterator.next();
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board.move(move);
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if (board.checkCheck(getColor())) iterator.remove();
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board.revert();
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}
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return moves;
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}
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protected abstract List<Move> getPseudolegalMoves(Position pos);
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public abstract boolean isValidMove(Move move);
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/**
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* Checks, if the squares between the position and the destination of a move are
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* free.
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*
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* @param move The move to check
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*/
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protected boolean isFreePath(Move move) {
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for (int i = move.pos.x + move.xSign, j = move.pos.y + move.ySign; i != move.dest.x
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|| j != move.dest.y; i += move.xSign, j += move.ySign)
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if (board.getBoardArr()[i][j] != null) return false;
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return checkDestination(move);
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}
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/**
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* Checks if the destination of a move is empty or a piece from the opposing
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* team
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*
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* @param move The move to check
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* @return {@code false} if the move's destination is from the same team
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*/
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protected final boolean checkDestination(Move move) {
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return board.getDest(move) == null || board.getDest(move).getColor() != getColor();
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}
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@Override
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public Object clone() {
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Piece piece = null;
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try {
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piece = (Piece) super.clone();
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} catch (CloneNotSupportedException ex) {
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ex.printStackTrace();
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}
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return piece;
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}
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public abstract Type getType();
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public Color getColor() { return color; }
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public int getMoveCounter() { return moveCounter; }
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public void incMoveCounter() {
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++moveCounter;
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}
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public void decMoveCounter() {
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--moveCounter;
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}
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public static enum Type {
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KING, QUEEN, ROOK, KNIGHT, BISHOP, PAWN
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}
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public static enum Color {
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WHITE, BLACK;
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public Color opposite() {
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return this == WHITE ? BLACK : WHITE;
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}
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public char firstChar() {
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return this == WHITE ? 'w' : 'b';
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}
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}
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}
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