gt:     protected void handleSpawned() {
context: /**
   * 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/>.
   *
   *
   * Credits goes to all Open Source Core Developer Groups listed below
   * Please do not change here something, ragarding the developer credits, except the "developed by XXXX".
   * Even if you edit a lot of files in this source, you still have no rights to call it as "your Core".
   * Everybody knows that this Emulator Core was developed by Aion Lightning 
   * @-Aion-Unique-
   * @-Aion-Lightning
   * @Aion-Engine
   * @Aion-Extreme
   * @Aion-NextGen
   * @Aion-Core Dev.
   */
  package ai.instance.dragonLordsRefuge;
  
  import ai.AggressiveNpcAI2;
  import com.aionemu.commons.network.util.ThreadPoolManager;
  import com.aionemu.commons.utils.Rnd;
  import com.aionemu.gameserver.ai2.AIName;
  import com.aionemu.gameserver.model.gameobjects.Creature;
  import com.aionemu.gameserver.model.gameobjects.Npc;
  import com.aionemu.gameserver.skillengine.SkillEngine;
  import com.aionemu.gameserver.world.WorldMapInstance;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.concurrent.Future;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  /**
   * @author Cheatkiller
   * @reworked Luzien
   */
  @AIName("tiamat") // 219361
  public class TiamatAI2 extends AggressiveNpcAI2 {
  
      protected List<Integer> percents = new ArrayList<Integer>();
      private AtomicBoolean isHome = new AtomicBoolean(true);
      private Future<?> skillTask;
      private Future<?> painTask;
      private Future<?> addTask;
  
      @Override
      protected void handleAttack(Creature creature) {
          super.handleAttack(creature);
          if (isHome.compareAndSet(true, false)) {
              startSkillTask();
          }
          checkPercentage(getLifeStats().getHpPercentage());
      }
  
      private void startPainTask() {
          painTask = ThreadPoolManager.getInstance().scheduleAtFixedRate(new Runnable() {
              @Override
              public void run() {
                  if (isAlreadyDead()) {
                      cancelTasks();
                  } else {
                      spawnInfinitePain();
                  }
              }
          }, 25000, 80000);
      }
  
      private void startSkillTask() {
          skillTask = ThreadPoolManager.getInstance().scheduleAtFixedRate(new Runnable() {
              @Override
              public void run() {
                  if (isAlreadyDead()) {
                      cancelTasks();
                  } else {
                      atrocityEvent();
                  }
              }
          }, 10000, 25000);
      }
  
      private void cancelTasks() {
          cancelSkillTask();
          if (addTask != null && !addTask.isCancelled()) {
              addTask.cancel(true);
          }
          if (painTask != null && !painTask.isCancelled()) {
              painTask.cancel(true);
          }
      }
  
      private void cancelSkillTask() {
          if (skillTask != null && !skillTask.isCancelled()) {
              skillTask.cancel(true);
          }
      }
  
      private synchronized void checkPercentage(int hpPercentage) {
          for (Integer percent : percents) {
              if (hpPercentage <= percent) {
                  switch (percent) {
                      case 50:
                          cancelSkillTask();
                          spawnDivisiveCreation();
                          break;
                      case 30:
                          spawnGravityCrusher();
                          break;
                      case 25:
                          startPainTask();
                          spawnGravityCrusher();
                          break;
                      case 20:
                      case 15:
                      case 10:
                          spawnGravityCrusher();
                          break;
                  }
                  percents.remove(percent);
                  break;
              }
          }
      }
      /*
       * sinking sand 283330 skill -> 20965 TODO
       */
  
      private void atrocityEvent() {
          int var = Rnd.get(3);
          int skill = 20922 + (var * 2); //20922/20924/20926, left,central,right
          spawnAtrocityNPCs(var);
          SkillEngine.getInstance().getSkill(getOwner(), skill, 60, getOwner()).useNoAnimationSkill(); //Animation without damage
      }
  
      private void spawnAtrocityNPCs(int var) {
          switch (var) {
              case 0:
                  spawn(283237, 445.0000f, 550.7000f, 417.4000f, (byte) 0);
                  break;
              case 2:
                  spawn(283244, 454.1000f, 474.9000f, 417.4000f, (byte) 0);
                  break;
              case 1:
                  spawn(283241, 457.8000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 462.3000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 469.7000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 466.6000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 473.6000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 479.3000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 475.8000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 491.2000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 482.7000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 485.2000f, 514.6000f, 417.4000f, (byte) 0);
                  spawn(283241, 488.1000f, 514.6000f, 417.4000f, (byte) 0);
                  break;
          }
      }
  
      private void spawnDivisiveCreation() {
          addTask = ThreadPoolManager.getInstance().scheduleAtFixedRate(new Runnable() {
              @Override
              public void run() {
                  if (isAlreadyDead()) {
                      cancelTasks();
                  } else {
                      despawnAdds();
                      spawn(283139, 464.24f, 462.26f, 417.4f, (byte) 18);
                      spawn(283139, 542.79f, 465.03f, 417.4f, (byte) 43);
                      spawn(283139, 541.79f, 563.71f, 417.4f, (byte) 74);
                      spawn(283139, 465.79f, 565.43f, 417.4f, (byte) 100);
                  }
              }
          }, 80000, 45000);
      }
  
      private void spawnGravityCrusher() {
          despawnAdds();
          spawn(283141, 464.24f, 462.26f, 417.4f, (byte) 18);
          spawn(283141, 542.79f, 465.03f, 417.4f, (byte) 43);
          spawn(283141, 541.79f, 563.71f, 417.4f, (byte) 74);
          spawn(283141, 465.79f, 565.43f, 417.4f, (byte) 100);
      }
  
      private void spawnInfinitePain() {
          despawnAdds();
          spawn(283143, 508.32f, 515.18f, 417.4f, (byte) 0);
          spawn(283144, 508.32f, 515.18f, 417.4f, (byte) 0);
      }
  
      private void addPercent() {
          percents.clear();
          Collections.addAll(percents, new Integer[]{50, 30, 25, 20, 15, 10});
      }
  
      @Override
  