de.schildbach.game.common.SingleCoordinateMove.java Source code

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Here is the source code for de.schildbach.game.common.SingleCoordinateMove.java

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/*
 * Copyright 2001-2011 the original author or authors.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.game.common;

import org.apache.commons.lang.ObjectUtils;

import de.schildbach.game.Coordinate;
import de.schildbach.game.GameMove;

/**
 * @author Andreas Schildbach
 */
public class SingleCoordinateMove extends GameMove {
    public static final SingleCoordinateMove PASS = new SingleCoordinateMove();

    private Coordinate coordinate;

    /**
     * Main constructor.
     */
    public SingleCoordinateMove(Coordinate coordinate) {
        this.coordinate = coordinate;
    }

    /**
     * Default constructor, needed for serialization.
     */
    protected SingleCoordinateMove() {
    }

    public boolean isPass() {
        return coordinate == null;
    }

    public Coordinate getCoordinate() {
        return coordinate;
    }

    @Override
    public String toString() {
        return isPass() ? "pass" : coordinate.toString();
    }

    @Override
    public boolean equals(Object obj) {
        SingleCoordinateMove other = (SingleCoordinateMove) obj;
        return ObjectUtils.equals(this.coordinate, other.coordinate);
    }

    @Override
    public int hashCode() {
        return ObjectUtils.hashCode(coordinate);
    }
}