Exercises/chess/pieces/Rook.java

package de.vivi.chess.pieces;

import de.vivi.chess.board.Board;
import de.vivi.chess.board.Field;

public class Rook extends Piece {

    private boolean isValid = false;

    public Rook(Color color, Type type) {
        super(color, type);
    }

    @Override
    public char getSymbol() {
        if (getColor() == Color.WHITE) {
            if (getType() == Type.ROOK) {
                symbol = '\u265C';
            }

        } else if (getColor() == Color.BLACK) {
            if (getType() == Type.ROOK) {
                symbol = '\u2656';
            }
        }
        return symbol;
    }

    @Override
    public boolean isValidMove(Board board, Field from, Field to) {
        if (board.getPiece(from).getSymbol() == symbol &&
                board.getPiece(from).getColor() == Color.WHITE) {

            if (from.getColumn() == to.getColumn()) {
                for (int i = 1; i < 8; i++) {
                    Field freeField = Field.from(from.getColumn(), from.getRow() - i);
                    //System.out.println(freeField.getRow());
                    //System.out.println(board.getPiece(freeField).getColor());

                    if (board.getPiece(Field.from(from.getColumn(), freeField.getRow())) == null) {
                        isValid = true;
                    } else if ((freeField.getRow() != to.getRow()) &&
                            (board.getPiece(Field.from(from.getColumn(), freeField.getRow())) != null) &&
                            (board.getPiece(Field.from(from.getColumn(), freeField.getRow())).getColor() == Color.BLACK)) {
                            isValid = false;
                        System.err.println("Illegal move, try again: ");
                    } else
                        /*if ((board.getPiece(Field.from(from.getColumn(), freeField.getRow())).getColor() == Color.BLACK ) &&
                            (freeField.getRow()) == to.getRow()) {
                        isValid = true;
                        //System.out.println(board.getPiece(freeField).getType());
                    } else
                    if ((board.getPiece(Field.from(from.getColumn(), freeField.getRow())).getColor() == Color.WHITE) &&
                            (freeField.getRow()) != to.getRow()) {
                    */
                        if ((board.getPiece(Field.from(from.getColumn(), freeField.getRow())) != null) &&
                                (board.getPiece(Field.from(from.getColumn(), freeField.getRow())).getColor() == Color.WHITE)) {
                            isValid = false;
                            //System.err.println("Illegal move, try again: ");
                    } else {
                        isValid = false;
                            //System.err.println("Illegal move, try again: ");
                    }
                }
            } else {
                isValid = false;
                //System.err.println("Illegal move, try again: ");
            }
        } else if (board.getPiece(from).getSymbol() == symbol &&
                board.getPiece(from).getColor() == Color.BLACK) {
            isValid = true;
        } else {
            isValid = false;
        }
        //System.out.println(isValid);
        return isValid;
    }
}