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.ai2.manager;
  
  import com.aionemu.gameserver.ai2.AI2Logger;
  import com.aionemu.gameserver.ai2.AIState;
  import com.aionemu.gameserver.ai2.AbstractAI;
  import com.aionemu.gameserver.ai2.NpcAI2;
  import com.aionemu.gameserver.ai2.event.AIEventType;
  import com.aionemu.gameserver.model.gameobjects.Creature;
  import com.aionemu.gameserver.model.gameobjects.Npc;
  import com.aionemu.gameserver.utils.MathUtil;
  import com.aionemu.gameserver.utils.ThreadPoolManager;
  import com.aionemu.gameserver.world.geo.GeoService;
  
  /**
   * @author ATracer
   */
  public class SimpleAttackManager {
  
  	/**
  	 * @param npcAI
  	 * @param delay
  	 */
  	public static void performAttack(NpcAI2 npcAI, int delay) {
  		if (npcAI.isLogging()) {
  			AI2Logger.info(npcAI, "performAttack");
  		}
  		if (npcAI.getOwner().getGameStats().isNextAttackScheduled()) {
  			if (npcAI.isLogging()) {
  				AI2Logger.info(npcAI, "Attack already scheduled");
  			}
  			scheduleCheckedAttackAction(npcAI, delay);
  			return;
  		}
  
  		if (!isTargetInAttackRange(npcAI.getOwner())) {
  			if (npcAI.isLogging()) {
  				AI2Logger.info(npcAI, "Attack will not be scheduled because of range");
  			}
  			npcAI.onGeneralEvent(AIEventType.TARGET_TOOFAR);
  			return;
  		}
  		npcAI.getOwner().getGameStats().setNextAttackTime(System.currentTimeMillis() + delay);
  		if (delay > 0) {
  			ThreadPoolManager.getInstance().schedule(new SimpleAttackAction(npcAI), delay);
  		}
  		else {
  			attackAction(npcAI);
  		}
  	}
  
  	/**
  	 * @param npcAI
  	 * @param delay
  	 */
  	private static void scheduleCheckedAttackAction(NpcAI2 npcAI, int delay) {
  		if (delay < 2000) {
  			delay = 2000;
  		}
  		if (npcAI.isLogging()) {
  			AI2Logger.info(npcAI, "Scheduling checked attack " + delay);
  		}
  		ThreadPoolManager.getInstance().schedule(new SimpleCheckedAttackAction(npcAI), delay);
  	}
  
  	public static boolean isTargetInAttackRange(Npc npc) {
  		if (npc.getAi2().isLogging()) {
  			float distance = npc.getDistanceToTarget();
  			AI2Logger.info((AbstractAI) npc.getAi2(), "isTargetInAttackRange: " + distance);
  		}
  		if (npc.getTarget() == null || !(npc.getTarget() instanceof Creature)) {
  			return false;
  		}
  		return MathUtil.isInAttackRange(npc, (Creature) npc.getTarget(), npc.getGameStats().getAttackRange().getCurrent() / 1000f);
  		// return distance <= npc.getController().getAttackDistanceToTarget() + NpcMoveController.MOVE_CHECK_OFFSET;
  	}
  
  	/**
  	 * @param npcAI
  	 */
  	protected static void attackAction(final NpcAI2 npcAI) {
  		if (!npcAI.isInState(AIState.FIGHT)) {
  			return;
  		}
  		if (npcAI.isLogging()) {
  			AI2Logger.info(npcAI, "attackAction");
  		}
  		Npc npc = npcAI.getOwner();
  		Creature target = (Creature) npc.getTarget();
  		if (target != null && !target.getLifeStats().isAlreadyDead()) {
  			if (!npc.canSee(target) || !GeoService.getInstance().canSee(npc, target)) { // delete check geo when the Path Finding
  				npc.getController().cancelCurrentSkill();
  				npcAI.onGeneralEvent(AIEventType.TARGET_GIVEUP);
  				return;
  			}
  			if (isTargetInAttackRange(npc)) {
  				npc.getController().attackTarget(target, 0, 0, 0);
  				npcAI.onGeneralEvent(AIEventType.ATTACK_COMPLETE);
  				return;
  			}
  			npcAI.onGeneralEvent(AIEventType.TARGET_TOOFAR);
  		}
  		else {
  			npcAI.onGeneralEvent(AIEventType.TARGET_GIVEUP);
  		}
  	}
  
  	private final static class SimpleAttackAction implements Runnable {
  
  		private NpcAI2 npcAI;
  
  		SimpleAttackAction(NpcAI2 npcAI) {
  			this.npcAI = npcAI;
  		}
  
  		@Override
  		public void run() {
  			attackAction(npcAI);
  			npcAI = null;
  		}
  	}
  
  	private final static class SimpleCheckedAttackAction implements Runnable {
  
  		private NpcAI2 npcAI;
  
  		SimpleCheckedAttackAction(NpcAI2 npcAI) {
  			this.npcAI = npcAI;
  		}
  
  		@Override
  		public void run() {
  			if (!npcAI.getOwner().getGameStats().isNextAttackScheduled()) {
  				attackAction(npcAI);
  			}
  			else {
  				if (npcAI.isLogging()) {
  					AI2Logger.info(npcAI, "Scheduled checked attacked confirmed");
  				}
  			}
  			npcAI = null;
  		}
  	}
  }
  