forked from pabulaner/vivi
65 lines
1.9 KiB
Java
65 lines
1.9 KiB
Java
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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 Queen extends Piece {
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public Queen(Color color, Type type) {
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super(color, type);
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}
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public Queen(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.QUEEN) {
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symbol = '\u265B';
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}
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} else if (getColor() == Color.BLACK) {
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if (getType() == Type.QUEEN) {
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symbol = '\u2655';
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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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if (to.equals(from)) {
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return false;
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}
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int rowDiff = Math.abs(to.getRow() - from.getRow());
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int colDiff = Math.abs(to.getColumn() - from.getColumn());
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boolean straightLine = from.getRow() == to.getRow()
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boolean diagonal = rowDiff == colDiff;
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if (!straightLine && !diagonal) {
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return false;
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}
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int rowDirection = Integer.compare(to.getRow(), from.getRow());
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int colDirection = Integer.compare(to.getColumn(), from.getColumn());
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int currentRow = from.getRow() + rowDirection;
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int currentCol = from.getColumn() + colDirection;
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while (currentRow != to.getRow() || currentCol != to.getColumn()) {
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if (board.getPiece(Field.from(currentCol, currentRow)) != null) {
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return false;
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}
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currentRow += rowDirection;
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currentCol += colDirection;
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}
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Piece destinationPiece = board.getPiece(Field.from(to.getColumn(), to.getRow()));
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return destinationPiece == null || destinationPiece.getColor() != this.getColor();
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}
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}
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