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 ai.instance.tiamatStrongHold;
  
  import java.util.concurrent.Future;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import com.aionemu.commons.network.util.ThreadPoolManager;
  import com.aionemu.commons.utils.Rnd;
  import com.aionemu.gameserver.ai2.AI2Actions;
  import com.aionemu.gameserver.ai2.AIName;
  import com.aionemu.gameserver.model.gameobjects.Creature;
  import com.aionemu.gameserver.model.gameobjects.Npc;
  import com.aionemu.gameserver.model.gameobjects.player.Player;
  import com.aionemu.gameserver.skillengine.SkillEngine;
  
  import ai.AggressiveNpcAI2;
  
  /**
   * @author Cheatkiller
   */
  @AIName("invincibleshabokan")
  public class InvincibleShabokanAI2 extends AggressiveNpcAI2 {
  
  	private AtomicBoolean isHome = new AtomicBoolean(true);
  	private Future<?> skillTask;
  	private boolean isFinalBuff;
  
  	@Override
  	protected void handleAttack(Creature creature) {
  		super.handleAttack(creature);
  		if (isHome.compareAndSet(true, false)) {
  			startSkillTask();
  		}
  		if (!isFinalBuff && getOwner().getLifeStats().getHpPercentage() <= 25) {
  			isFinalBuff = true;
  			AI2Actions.useSkill(this, 20941);
  		}
  	}
  
  	private void startSkillTask() {
  		skillTask = ThreadPoolManager.getInstance().scheduleAtFixedRate(new Runnable() {
  
  			@Override
  			public void run() {
  				if (isAlreadyDead()) {
  					cancelTask();
  				}
  				else {
  					chooseRandomEvent();
  				}
  			}
  		}, 5000, 30000);
  	}
  
  	private void cancelTask() {
  		if (skillTask != null && !skillTask.isCancelled()) {
  			skillTask.cancel(true);
  		}
  	}
  
  	private void earthQuakeEvent() {
  		Npc invisible = getPosition().getWorldMapInstance().getNpc(283082);
  		SkillEngine.getInstance().getSkill(getOwner(), 20717, 55, getOwner()).useNoAnimationSkill();
  		if (invisible == null) {
  			spawn(283082, getOwner().getX(), getOwner().getY(), getOwner().getZ(), (byte) 0);
  		}
  	}
  
  	private void sinkEvent() {
  		SkillEngine.getInstance().getSkill(getOwner(), 20720, 55, getOwner()).useNoAnimationSkill();
  		for (Player player : getKnownList().getKnownPlayers().values()) {
  			if (isInRange(player, 30)) {
  				spawn(283083, player.getX(), player.getY(), player.getZ(), (byte) 0);
  				spawn(283084, player.getX(), player.getY(), player.getZ(), (byte) 0);
  			}
  		}
  	}
  
  	private void chooseRandomEvent() {
  		int rand = Rnd.get(0, 1);
  		if (rand == 0) {
  			earthQuakeEvent();
  		}
  		else {
  			sinkEvent();
  		}
  	}
  
  	@Override
  	protected void handleDied() {
  		super.handleDied();
  		cancelTask();
  	}
  
  	@Override
  	protected void handleDespawned() {
  		super.handleDespawned();
  		cancelTask();
  	}
  
  	@Override
  	protected void handleBackHome() {
  		super.handleBackHome();
  		cancelTask();
  		getOwner().getEffectController().removeEffect(20941);
  		isHome.set(true);
  	}
  }
  