/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Alexander Melihov
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package melihovv.SmartAndStupidRobotGame.model.navigation;

import java.awt.Point;

/**
 * The <code>CellPosition</code> class defines cell position.
 */
public class CellPosition {

    private Point _pos;

    public CellPosition(Point pos) {
        _pos = pos;
    }

    public Point pos() {
        return _pos;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof CellPosition) {
            CellPosition other = (CellPosition) obj;
            return _pos.equals(other._pos);
        }
        return false;
    }
}

@@ -1226,16 +1226,42 @@
 t.Point;
+%0Aimport java.util.HashMap;
 %0A%0A/**%0A *
@@ -1381,117 +1381,748 @@
 os;%0A
-%0A    public CellPosition(Point pos) %7B%0A        _pos = pos;%0A    %7D%0A%0A    public Point pos() %7B%0A        return _pos
+    private static HashMap%3CDirection, int%5B%5D%3E _offset =%0A            new HashMap%3CDirection, int%5B%5D%3E() %7B%7B%0A                put(Direction.north(), new int%5B%5D%7B0, -1%7D);%0A                put(Direction.south(), new int%5B%5D%7B0, 1%7D);%0A                put(Direction.east(), new int%5B%5D%7B1, 0%7D);%0A                put(Direction.west(), new int%5B%5D%7B-1, 0%7D);%0A            %7D%7D;%0A%0A    public CellPosition(Point pos) %7B%0A        _pos = pos;%0A    %7D%0A%0A    public Point pos() %7B%0A        return _pos;%0A    %7D%0A%0A    public CellPosition next(Direction dir) %7B%0A        return new CellPosition(calcNewPos(_pos, dir));%0A    %7D%0A%0A    private static Point calcNewPos(Point pos, Direction dir) %7B%0A        int%5B%5D offset = _offset.get(dir);%0A        return new Point(pos.x + offset%5B0%5D, pos.y + offset%5B1%5D)
 ;%0A  

add next() method to CellPosition class