content: /**
   * This file is part of Aion-Lightning <aion-lightning.org>.
   *
   *  Aion-Lightning is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  Aion-Lightning 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 General Public License for more details. *
   *  You should have received a copy of the GNU General Public License
   *  along with Aion-Lightning.
   *  If not, see <http://www.gnu.org/licenses/>.
   */
  package com.aionemu.gameserver.controllers.observer;
  
  import com.aionemu.gameserver.model.gameobjects.Creature;
  import com.aionemu.gameserver.model.gameobjects.player.Player;
  import com.aionemu.gameserver.utils.MathUtil;
  
  /**
   * @author xTz
   */
  public abstract class GaleCycloneObserver extends ActionObserver {
  
  	private Player player;
  	private Creature creature;
  	private double oldRange;
  
  	public GaleCycloneObserver(Player player, Creature creature) {
  		super(ObserverType.MOVE);
  		this.player = player;
  		this.creature = creature;
  		oldRange = MathUtil.getDistance(player, creature);
  	}
  
  	@Override
  	public void moved() {
  		double newRange = MathUtil.getDistance(player, creature);
  		if (creature == null || creature.getLifeStats().isAlreadyDead()) {
  			if (player != null) {
  				player.getObserveController().removeObserver(this);
  			}
  			return;
  		}
  		if (oldRange > 12 && newRange <= 12) {
  			onMove();
  		}
  		oldRange = newRange;
  	}
  
  	public abstract void onMove();
  }
  