forked from pabulaner/vivi
60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
package de.vivi.chess.pieces;
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import de.vivi.chess.board.Board;
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import de.vivi.chess.board.Field;
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public class Bishop extends Piece {
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public Bishop(Color color, Type type) {
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super(color, type);
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}
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public Bishop(Color color, Type type, Field field) {
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super(color, type, field);
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}
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@Override
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public char getSymbol() {
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if (getColor() == Color.WHITE) {
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if (getType() == Type.BISHOP) {
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symbol = '\u265D';
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}
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} else if (getColor() == Color.BLACK) {
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if (getType() == Type.BISHOP) {
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symbol = '\u2657';
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}
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}
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return symbol;
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}
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@Override
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public boolean isValidMove(Board board, Field from, Field to) {
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int rowDiff = Math.abs(from.getRow() - to.getRow());
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int colDiff = Math.abs(from.getColumn() - to.getColumn());
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if (rowDiff != colDiff) {
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return false;
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}
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int rowStep = to.getRow() > from.getRow() ? 1 : -1;
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int colStep = to.getColumn() > from.getColumn() ? 1 : -1;
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int steps = rowDiff - 1;
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for (int i = 1; i <= steps; i++) {
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if (board.getPiece(Field.from(from.getColumn() + i * rowStep,
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from.getRow() + i * colStep)) != null) {
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return false;
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}
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}
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Piece destinationPiece = board.getPiece(Field.from(to.getColumn(), to.getRow()));
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if (destinationPiece == null) {
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return true;
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} else if (destinationPiece.getColor() != this.getColor()) {
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return true;
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}
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return false;
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}
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}
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