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.skillengine.effect;
  
  import java.util.concurrent.Future;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlAttribute;
  import javax.xml.bind.annotation.XmlType;
  
  import com.aionemu.gameserver.ai2.event.AIEventType;
  import com.aionemu.gameserver.controllers.observer.ActionObserver;
  import com.aionemu.gameserver.controllers.observer.ObserverType;
  import com.aionemu.gameserver.model.TaskId;
  import com.aionemu.gameserver.model.gameobjects.Creature;
  import com.aionemu.gameserver.model.gameobjects.Homing;
  import com.aionemu.gameserver.model.templates.spawns.SpawnTemplate;
  import com.aionemu.gameserver.skillengine.SkillEngine;
  import com.aionemu.gameserver.skillengine.model.Effect;
  import com.aionemu.gameserver.spawnengine.SpawnEngine;
  import com.aionemu.gameserver.spawnengine.VisibleObjectSpawner;
  import com.aionemu.gameserver.utils.ThreadPoolManager;
  
  /**
   * @author ATracer
   * @modified Kill3r
   */
  @XmlAccessorType(XmlAccessType.FIELD)
  @XmlType(name = "SummonHomingEffect")
  public class SummonHomingEffect extends SummonEffect {
  
  	@XmlAttribute(name = "npc_count", required = true)
  	protected int npcCount;
  	@XmlAttribute(name = "attack_count", required = true)
  	protected int attackCount;
  	@XmlAttribute(name = "skill_id", required = false)
  	protected int skillId;
  
  	@Override
  	public void applyEffect(Effect effect) {
  		final Creature effected = effect.getEffected();
  		final Creature effector = effect.getEffector();
  		float x = effector.getX();
  		float y = effector.getY();
  		float z = effector.getZ();
  		byte heading = effector.getHeading();
  		int worldId = effector.getWorldId();
  		int instanceId = effector.getInstanceId();
  
  		for (int i = 0; i < npcCount; i++) {
  			SpawnTemplate spawn = SpawnEngine.addNewSingleTimeSpawn(worldId, npcId, x, y, z, heading);
  			final Homing homing = VisibleObjectSpawner.spawnHoming(spawn, instanceId, effector, attackCount, effect.getSkillId(), effect.getSkillLevel(), skillId);
  
  			if (attackCount > 0) {
  				ActionObserver observer = new ActionObserver(ObserverType.ATTACK) {
  
  					@Override
  					public void attack(Creature creature) {
  						homing.setAttackCount(homing.getAttackCount() - 1);
  						if (skillId != 0) {
  							SkillEngine.getInstance().applyEffectDirectly(skillId, effector, effected, 0);
  						}
  						if (homing.getAttackCount() <= 0) {
  							homing.getController().onDelete();
  						}
  					}
  				};
  
  				homing.getObserveController().addObserver(observer);
  				effect.setActionObserver(observer, position);
  			}
  			// Schedule a despawn just in case
  			Future<?> task = ThreadPoolManager.getInstance().schedule(new Runnable() {
  
  				@Override
  				public void run() {
  					if ((homing != null) && (homing.isSpawned())) {
  						homing.getController().onDelete();
  					}
  				}
  			}, 15 * 1000);
  			homing.getController().addTask(TaskId.DESPAWN, task);
  			homing.getAi2().onCreatureEvent(AIEventType.ATTACK, effect.getEffected());
  		}
  	}
  }
  