l2j_mobius/trunk/java/com/l2jmobius/gameserver/model/quest/Quest.java

/*
 * This file is part of the L2J Mobius project.
 * 
 * This program 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.
 * 
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jmobius.gameserver.model.quest;

import java.nio.file.Path;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
import java.util.function.Predicate;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;

import com.l2jmobius.Config;
import com.l2jmobius.commons.database.DatabaseFactory;
import com.l2jmobius.commons.util.CommonUtil;
import com.l2jmobius.commons.util.Rnd;
import com.l2jmobius.gameserver.cache.HtmCache;
import com.l2jmobius.gameserver.enums.CategoryType;
import com.l2jmobius.gameserver.enums.QuestType;
import com.l2jmobius.gameserver.enums.Race;
import com.l2jmobius.gameserver.enums.TrapAction;
import com.l2jmobius.gameserver.instancemanager.QuestManager;
import com.l2jmobius.gameserver.model.KeyValuePair;
import com.l2jmobius.gameserver.model.L2Object;
import com.l2jmobius.gameserver.model.L2Party;
import com.l2jmobius.gameserver.model.actor.L2Attackable;
import com.l2jmobius.gameserver.model.actor.L2Character;
import com.l2jmobius.gameserver.model.actor.L2Npc;
import com.l2jmobius.gameserver.model.actor.L2Summon;
import com.l2jmobius.gameserver.model.actor.instance.L2PcInstance;
import com.l2jmobius.gameserver.model.actor.instance.L2TrapInstance;
import com.l2jmobius.gameserver.model.base.AcquireSkillType;
import com.l2jmobius.gameserver.model.base.ClassId;
import com.l2jmobius.gameserver.model.events.AbstractScript;
import com.l2jmobius.gameserver.model.events.EventType;
import com.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
import com.l2jmobius.gameserver.model.events.returns.TerminateReturn;
import com.l2jmobius.gameserver.model.holders.NpcLogListHolder;
import com.l2jmobius.gameserver.model.holders.SkillHolder;
import com.l2jmobius.gameserver.model.instancezone.Instance;
import com.l2jmobius.gameserver.model.interfaces.IIdentifiable;
import com.l2jmobius.gameserver.model.items.L2Item;
import com.l2jmobius.gameserver.model.items.instance.L2ItemInstance;
import com.l2jmobius.gameserver.model.olympiad.CompetitionType;
import com.l2jmobius.gameserver.model.olympiad.Participant;
import com.l2jmobius.gameserver.model.skills.Skill;
import com.l2jmobius.gameserver.model.zone.L2ZoneType;
import com.l2jmobius.gameserver.network.serverpackets.ActionFailed;
import com.l2jmobius.gameserver.network.serverpackets.ExQuestNpcLogList;
import com.l2jmobius.gameserver.network.serverpackets.NpcHtmlMessage;
import com.l2jmobius.gameserver.network.serverpackets.NpcQuestHtmlMessage;
import com.l2jmobius.gameserver.scripting.ScriptEngineManager;

/**
 * Quest main class.
 * @author Luis Arias
 */
public class Quest extends AbstractScript implements IIdentifiable
{
	public static final Logger _log = Logger.getLogger(Quest.class.getName());
	
	/** Map containing lists of timers from the name of the timer. */
	private volatile Map<String, List<QuestTimer>> _questTimers = null;
	private final ReentrantReadWriteLock _rwLock = new ReentrantReadWriteLock();
	private final WriteLock _writeLock = _rwLock.writeLock();
	private final ReadLock _readLock = _rwLock.readLock();
	/** Map containing all the start conditions. */
	private volatile Set<QuestCondition> _startCondition = null;
	
	private final int _questId;
	private final byte _initialState = State.CREATED;
	private boolean _isCustom = false;
	
	private int[] _questItemIds = null;
	
	private static final String DEFAULT_NO_QUEST_MSG = "<html><body>You are either not on a quest that involves this NPC, or you don't meet this NPC's minimum quest requirements.</body></html>";
	
	private static final String QUEST_DELETE_FROM_CHAR_QUERY = "DELETE FROM character_quests WHERE charId=? AND name=?";
	private static final String QUEST_DELETE_FROM_CHAR_QUERY_NON_REPEATABLE_QUERY = "DELETE FROM character_quests WHERE charId=? AND name=? AND var!=?";
	
	private static final int RESET_HOUR = 6;
	private static final int RESET_MINUTES = 30;
	
	private static final int STEEL_DOOR_COIN = 37045; // Steel Door Guild Coin
	private static final SkillHolder STORY_QUEST_REWARD = new SkillHolder(27580, 1);
	
	/**
	 * @return the reset hour for a daily quest, could be overridden on a script.
	 */
	public int getResetHour()
	{
		return RESET_HOUR;
	}
	
	/**
	 * @return the reset minutes for a daily quest, could be overridden on a script.
	 */
	public int getResetMinutes()
	{
		return RESET_MINUTES;
	}
	
	/**
	 * The Quest object constructor.<br>
	 * Constructing a quest also calls the {@code init_LoadGlobalData} convenience method.
	 * @param questId ID of the quest
	 */
	public Quest(int questId)
	{
		_questId = questId;
		if (questId > 0)
		{
			QuestManager.getInstance().addQuest(this);
		}
		else
		{
			QuestManager.getInstance().addScript(this);
		}
		
		onLoad();
	}
	
	/**
	 * This method is, by default, called by the constructor of all scripts.<br>
	 * Children of this class can implement this function in order to define what variables to load and what structures to save them in.<br>
	 * By default, nothing is loaded.
	 */
	protected void onLoad()
	{
		
	}
	
	/**
	 * The function onSave is, by default, called at shutdown, for all quests, by the QuestManager.<br>
	 * Children of this class can implement this function in order to convert their structures<br>
	 * into <var, value> tuples and make calls to save them to the database, if needed.<br>
	 * By default, nothing is saved.
	 */
	public void onSave()
	{
		
	}
	
	/**
	 * Gets the quest ID.
	 * @return the quest ID
	 */
	@Override
	public int getId()
	{
		return _questId;
	}
	
	/**
	 * @return the NpcStringId of the current quest, used in Quest link bypass
	 */
	public int getNpcStringId()
	{
		return _questId > 10000 ? _questId - 5000 : _questId;
	}
	
	/**
	 * Add a new quest state of this quest to the database.
	 * @param player the owner of the newly created quest state
	 * @return the newly created {@link QuestState} object
	 */
	public QuestState newQuestState(L2PcInstance player)
	{
		return new QuestState(this, player, _initialState);
	}
	
	/**
	 * Get the specified player's {@link QuestState} object for this quest.<br>
	 * If the player does not have it and initIfNode is {@code true},<br>
	 * create a new QuestState object and return it, otherwise return {@code null}.
	 * @param player the player whose QuestState to get
	 * @param initIfNone if true and the player does not have a QuestState for this quest,<br>
	 *            create a new QuestState
	 * @return the QuestState object for this quest or null if it doesn't exist
	 */
	public QuestState getQuestState(L2PcInstance player, boolean initIfNone)
	{
		final QuestState qs = player.getQuestState(getName());
		if ((qs != null) || !initIfNone)
		{
			return qs;
		}
		return newQuestState(player);
	}
	
	/**
	 * @return the initial state of the quest
	 */
	public byte getInitialState()
	{
		return _initialState;
	}
	
	/**
	 * @return the name of the quest
	 */
	public String getName()
	{
		return getClass().getSimpleName();
	}
	
	/**
	 * @return the path of the quest script
	 */
	public String getPath()
	{
		final String path = getClass().getName().replace('.', '/');
		return path.substring(0, path.lastIndexOf('/' + getClass().getSimpleName()));
	}
	
	/**
	 * Add a timer to the quest (if it doesn't exist already) and start it.
	 * @param name the name of the timer (also passed back as "event" in {@link #onAdvEvent(String, L2Npc, L2PcInstance)})
	 * @param time time in ms for when to fire the timer
	 * @param npc the npc associated with this timer (can be null)
	 * @param player the player associated with this timer (can be null)
	 * @see #startQuestTimer(String, long, L2Npc, L2PcInstance, boolean)
	 */
	public void startQuestTimer(String name, long time, L2Npc npc, L2PcInstance player)
	{
		startQuestTimer(name, time, npc, player, false);
	}
	
	/**
	 * Gets the quest timers.
	 * @return the quest timers
	 */
	public final Map<String, List<QuestTimer>> getQuestTimers()
	{
		if (_questTimers == null)
		{
			synchronized (this)
			{
				if (_questTimers == null)
				{
					_questTimers = new ConcurrentHashMap<>(1);
				}
			}
		}
		return _questTimers;
	}
	
	/**
	 * Add a timer to the quest (if it doesn't exist already) and start it.
	 * @param name the name of the timer (also passed back as "event" in {@link #onAdvEvent(String, L2Npc, L2PcInstance)})
	 * @param time time in ms for when to fire the timer
	 * @param npc the npc associated with this timer (can be null)
	 * @param player the player associated with this timer (can be null)
	 * @param repeating indicates whether the timer is repeatable or one-time.<br>
	 *            If {@code true}, the task is repeated every {@code time} milliseconds until explicitly stopped.
	 */
	public void startQuestTimer(String name, long time, L2Npc npc, L2PcInstance player, boolean repeating)
	{
		final List<QuestTimer> timers = getQuestTimers().computeIfAbsent(name, k -> new ArrayList<>(1));
		// if there exists a timer with this name, allow the timer only if the [npc, player] set is unique
		// nulls act as wildcards
		if (getQuestTimer(name, npc, player) == null)
		{
			_writeLock.lock();
			try
			{
				timers.add(new QuestTimer(this, name, time, npc, player, repeating));
			}
			finally
			{
				_writeLock.unlock();
			}
		}
	}
	
	/**
	 * Get a quest timer that matches the provided name and parameters.
	 * @param name the name of the quest timer to get
	 * @param npc the NPC associated with the quest timer to get
	 * @param player the player associated with the quest timer to get
	 * @return the quest timer that matches the specified parameters or {@code null} if nothing was found
	 */
	public QuestTimer getQuestTimer(String name, L2Npc npc, L2PcInstance player)
	{
		if (_questTimers == null)
		{
			return null;
		}
		
		final List<QuestTimer> timers = getQuestTimers().get(name);
		if (timers != null)
		{
			_readLock.lock();
			try
			{
				for (QuestTimer timer : timers)
				{
					if (timer != null)
					{
						if (timer.isMatch(this, name, npc, player))
						{
							return timer;
						}
					}
				}
			}
			finally
			{
				_readLock.unlock();
			}
		}
		return null;
	}
	
	/**
	 * Cancel all quest timers with the specified name.
	 * @param name the name of the quest timers to cancel
	 */
	public void cancelQuestTimers(String name)
	{
		if (_questTimers == null)
		{
			return;
		}
		
		final List<QuestTimer> timers = getQuestTimers().get(name);
		if (timers != null)
		{
			_writeLock.lock();
			try
			{
				for (QuestTimer timer : timers)
				{
					if (timer != null)
					{
						timer.cancel();
					}
				}
				timers.clear();
			}
			finally
			{
				_writeLock.unlock();
			}
		}
	}
	
	/**
	 * Cancel the quest timer that matches the specified name and parameters.
	 * @param name the name of the quest timer to cancel
	 * @param npc the NPC associated with the quest timer to cancel
	 * @param player the player associated with the quest timer to cancel
	 */
	public void cancelQuestTimer(String name, L2Npc npc, L2PcInstance player)
	{
		final QuestTimer timer = getQuestTimer(name, npc, player);
		if (timer != null)
		{
			timer.cancelAndRemove();
		}
	}
	
	/**
	 * Remove a quest timer from the list of all timers.<br>
	 * Note: does not stop the timer itself!
	 * @param timer the {@link QuestState} object to remove
	 */
	public void removeQuestTimer(QuestTimer timer)
	{
		if ((timer != null) && (_questTimers != null))
		{
			final List<QuestTimer> timers = getQuestTimers().get(timer.getName());
			if (timers != null)
			{
				_writeLock.lock();
				try
				{
					timers.remove(timer);
				}
				finally
				{
					_writeLock.unlock();
				}
			}
		}
	}
	
	// These are methods to call within the core to call the quest events.
	
	/**
	 * @param npc the NPC that was attacked
	 * @param attacker the attacking player
	 * @param damage the damage dealt to the NPC by the player
	 * @param isSummon if {@code true}, the attack was actually made by the player's summon
	 * @param skill the skill used to attack the NPC (can be null)
	 */
	public final void notifyAttack(L2Npc npc, L2PcInstance attacker, int damage, boolean isSummon, Skill skill)
	{
		String res = null;
		try
		{
			res = onAttack(npc, attacker, damage, isSummon, skill);
		}
		catch (Exception e)
		{
			showError(attacker, e);
			return;
		}
		showResult(attacker, res);
	}
	
	/**
	 * @param killer the character that killed the {@code victim}
	 * @param victim the character that was killed by the {@code killer}
	 * @param qs the quest state object of the player to be notified of this event
	 */
	public final void notifyDeath(L2Character killer, L2Character victim, QuestState qs)
	{
		String res = null;
		try
		{
			res = onDeath(killer, victim, qs);
		}
		catch (Exception e)
		{
			showError(qs.getPlayer(), e);
			return;
		}
		showResult(qs.getPlayer(), res);
	}
	
	/**
	 * @param item
	 * @param player
	 */
	public final void notifyItemUse(L2Item item, L2PcInstance player)
	{
		String res = null;
		try
		{
			res = onItemUse(item, player);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * @param instance
	 * @param player
	 * @param skill
	 */
	public final void notifySpellFinished(L2Npc instance, L2PcInstance player, Skill skill)
	{
		String res = null;
		try
		{
			res = onSpellFinished(instance, player, skill);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * Notify quest script when something happens with a trap.
	 * @param trap the trap instance which triggers the notification
	 * @param trigger the character which makes effect on the trap
	 * @param action 0: trap casting its skill. 1: trigger detects the trap. 2: trigger removes the trap
	 */
	public final void notifyTrapAction(L2TrapInstance trap, L2Character trigger, TrapAction action)
	{
		String res = null;
		try
		{
			res = onTrapAction(trap, trigger, action);
		}
		catch (Exception e)
		{
			if (trigger.getActingPlayer() != null)
			{
				showError(trigger.getActingPlayer(), e);
			}
			_log.log(Level.WARNING, "Exception on onTrapAction() in notifyTrapAction(): " + e.getMessage(), e);
			return;
		}
		if (trigger.getActingPlayer() != null)
		{
			showResult(trigger.getActingPlayer(), res);
		}
	}
	
	/**
	 * @param npc the spawned NPC
	 */
	public final void notifySpawn(L2Npc npc)
	{
		try
		{
			onSpawn(npc);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onSpawn() in notifySpawn(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param npc the teleport NPC
	 */
	public final void notifyTeleport(L2Npc npc)
	{
		try
		{
			onTeleport(npc);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onTeleport() in notifyTeleport(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param event
	 * @param npc
	 * @param player
	 */
	public final void notifyEvent(String event, L2Npc npc, L2PcInstance player)
	{
		String res = null;
		try
		{
			res = onAdvEvent(event, npc, player);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res, npc);
	}
	
	/**
	 * @param player the player entering the world
	 */
	public final void notifyEnterWorld(L2PcInstance player)
	{
		String res = null;
		try
		{
			res = onEnterWorld(player);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * @param npc
	 * @param killer
	 * @param isSummon
	 */
	public final void notifyKill(L2Npc npc, L2PcInstance killer, boolean isSummon)
	{
		String res = null;
		try
		{
			res = onKill(npc, killer, isSummon);
		}
		catch (Exception e)
		{
			showError(killer, e);
			return;
		}
		showResult(killer, res);
	}
	
	/**
	 * @param npc
	 * @param player
	 * @param isSimulated
	 */
	public final void notifyTalk(L2Npc npc, L2PcInstance player, boolean isSimulated)
	{
		String res = null;
		try
		{
			//@formatter:off
			final Set<Quest> startingQuests = npc.getListeners(EventType.ON_NPC_QUEST_START).stream()
				.map(AbstractEventListener::getOwner)
				.filter(Quest.class::isInstance)
				.map(Quest.class::cast)
				.distinct()
				.collect(Collectors.toSet());
			//@formatter:on
			
			final String startConditionHtml = getStartConditionHtml(player, npc);
			if (startingQuests.contains(this) && (startConditionHtml != null))
			{
				res = startConditionHtml;
			}
			else
			{
				res = onTalk(npc, player, isSimulated);
			}
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		player.setLastQuestNpcObject(npc.getObjectId());
		showResult(player, res, npc);
	}
	
	/**
	 * Override the default NPC dialogs when a quest defines this for the given NPC.<br>
	 * Note: If the default html for this npc needs to be shown, onFirstTalk should call npc.showChatWindow(player) and then return null.
	 * @param npc the NPC whose dialogs to override
	 * @param player the player talking to the NPC
	 */
	public final void notifyFirstTalk(L2Npc npc, L2PcInstance player)
	{
		String res = null;
		try
		{
			res = onFirstTalk(npc, player);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res, npc);
	}
	
	/**
	 * Notify the quest engine that an skill has been acquired.
	 * @param npc the NPC
	 * @param player the player
	 * @param skill the skill
	 * @param type the skill learn type
	 */
	public final void notifyAcquireSkill(L2Npc npc, L2PcInstance player, Skill skill, AcquireSkillType type)
	{
		String res = null;
		try
		{
			res = onAcquireSkill(npc, player, skill, type);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * @param item
	 * @param player
	 */
	public final void notifyItemTalk(L2ItemInstance item, L2PcInstance player)
	{
		String res = null;
		try
		{
			res = onItemTalk(item, player);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * @param item
	 * @param player
	 * @return
	 */
	public String onItemTalk(L2ItemInstance item, L2PcInstance player)
	{
		return null;
	}
	
	/**
	 * @param item
	 * @param player
	 * @param event
	 */
	public final void notifyItemEvent(L2ItemInstance item, L2PcInstance player, String event)
	{
		String res = null;
		try
		{
			res = onItemEvent(item, player, event);
			if (res != null)
			{
				if (res.equalsIgnoreCase("true") || res.equalsIgnoreCase("false"))
				{
					return;
				}
			}
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * @param npc
	 * @param caster
	 * @param skill
	 * @param targets
	 * @param isSummon
	 */
	public final void notifySkillSee(L2Npc npc, L2PcInstance caster, Skill skill, L2Object[] targets, boolean isSummon)
	{
		String res = null;
		try
		{
			res = onSkillSee(npc, caster, skill, targets, isSummon);
		}
		catch (Exception e)
		{
			showError(caster, e);
			return;
		}
		showResult(caster, res);
	}
	
	/**
	 * @param npc
	 * @param caller
	 * @param attacker
	 * @param isSummon
	 */
	public final void notifyFactionCall(L2Npc npc, L2Npc caller, L2PcInstance attacker, boolean isSummon)
	{
		String res = null;
		try
		{
			res = onFactionCall(npc, caller, attacker, isSummon);
		}
		catch (Exception e)
		{
			showError(attacker, e);
			return;
		}
		showResult(attacker, res);
	}
	
	/**
	 * @param npc
	 * @param player
	 * @param isSummon
	 */
	public final void notifyAggroRangeEnter(L2Npc npc, L2PcInstance player, boolean isSummon)
	{
		String res = null;
		try
		{
			res = onAggroRangeEnter(npc, player, isSummon);
		}
		catch (Exception e)
		{
			showError(player, e);
			return;
		}
		showResult(player, res);
	}
	
	/**
	 * @param npc the NPC that sees the creature
	 * @param creature the creature seen by the NPC
	 * @param isSummon
	 */
	public final void notifySeeCreature(L2Npc npc, L2Character creature, boolean isSummon)
	{
		L2PcInstance player = null;
		if (isSummon || creature.isPlayer())
		{
			player = creature.getActingPlayer();
		}
		String res = null;
		try
		{
			res = onSeeCreature(npc, creature, isSummon);
		}
		catch (Exception e)
		{
			if (player != null)
			{
				showError(player, e);
			}
			return;
		}
		if (player != null)
		{
			showResult(player, res);
		}
	}
	
	/**
	 * @param eventName - name of event
	 * @param sender - NPC, who sent event
	 * @param receiver - NPC, who received event
	 * @param reference - L2Object to pass, if needed
	 */
	public final void notifyEventReceived(String eventName, L2Npc sender, L2Npc receiver, L2Object reference)
	{
		try
		{
			onEventReceived(eventName, sender, receiver, reference);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onEventReceived() in notifyEventReceived(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param character
	 * @param zone
	 */
	public final void notifyEnterZone(L2Character character, L2ZoneType zone)
	{
		final L2PcInstance player = character.getActingPlayer();
		String res = null;
		try
		{
			res = onEnterZone(character, zone);
		}
		catch (Exception e)
		{
			if (player != null)
			{
				showError(player, e);
			}
			return;
		}
		if (player != null)
		{
			showResult(player, res);
		}
	}
	
	/**
	 * @param character
	 * @param zone
	 */
	public final void notifyExitZone(L2Character character, L2ZoneType zone)
	{
		final L2PcInstance player = character.getActingPlayer();
		String res = null;
		try
		{
			res = onExitZone(character, zone);
		}
		catch (Exception e)
		{
			if (player != null)
			{
				showError(player, e);
			}
			return;
		}
		if (player != null)
		{
			showResult(player, res);
		}
	}
	
	/**
	 * @param winner
	 * @param looser
	 * @param type
	 */
	public final void notifyOlympiadMatch(Participant winner, Participant looser, CompetitionType type)
	{
		try
		{
			onOlympiadMatchFinish(winner, looser, type);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Execution on onOlympiadMatchFinish() in notifyOlympiadMatch(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param npc
	 */
	public final void notifyMoveFinished(L2Npc npc)
	{
		try
		{
			onMoveFinished(npc);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onMoveFinished() in notifyMoveFinished(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param npc
	 */
	public final void notifyNodeArrived(L2Npc npc)
	{
		try
		{
			onNodeArrived(npc);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onNodeArrived() in notifyNodeArrived(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param npc
	 */
	public final void notifyRouteFinished(L2Npc npc)
	{
		try
		{
			onRouteFinished(npc);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onRouteFinished() in notifyRouteFinished(): " + e.getMessage(), e);
		}
	}
	
	/**
	 * @param npc
	 * @param player
	 * @return {@code true} if player can see this npc, {@code false} otherwise.
	 */
	public final boolean notifyOnCanSeeMe(L2Npc npc, L2PcInstance player)
	{
		try
		{
			return onCanSeeMe(npc, player);
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "Exception on onCanSeeMe() in notifyOnCanSeeMe(): " + e.getMessage(), e);
		}
		return false;
	}
	
	// These are methods that java calls to invoke scripts.
	
	/**
	 * This function is called in place of {@link #onAttack(L2Npc, L2PcInstance, int, boolean, Skill)} if the former is not implemented.<br>
	 * If a script contains both onAttack(..) implementations, then this method will never be called unless the script's {@link #onAttack(L2Npc, L2PcInstance, int, boolean, Skill)} explicitly calls this method.
	 * @param npc this parameter contains a reference to the exact instance of the NPC that got attacked the NPC.
	 * @param attacker this parameter contains a reference to the exact instance of the player who attacked.
	 * @param damage this parameter represents the total damage that this attack has inflicted to the NPC.
	 * @param isSummon this parameter if it's {@code false} it denotes that the attacker was indeed the player, else it specifies that the damage was actually dealt by the player's pet.
	 * @return
	 */
	public String onAttack(L2Npc npc, L2PcInstance attacker, int damage, boolean isSummon)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player attacks an NPC that is registered for the quest.<br>
	 * If is not overridden by a subclass, then default to the returned value of the simpler (and older) {@link #onAttack(L2Npc, L2PcInstance, int, boolean)} override.<br>
	 * @param npc this parameter contains a reference to the exact instance of the NPC that got attacked.
	 * @param attacker this parameter contains a reference to the exact instance of the player who attacked the NPC.
	 * @param damage this parameter represents the total damage that this attack has inflicted to the NPC.
	 * @param isSummon this parameter if it's {@code false} it denotes that the attacker was indeed the player, else it specifies that the damage was actually dealt by the player's summon
	 * @param skill parameter is the skill that player used to attack NPC.
	 * @return
	 */
	public String onAttack(L2Npc npc, L2PcInstance attacker, int damage, boolean isSummon, Skill skill)
	{
		return onAttack(npc, attacker, damage, isSummon);
	}
	
	/**
	 * This function is called whenever an <b>exact instance</b> of a character who was previously registered for this event dies.<br>
	 * The registration for {@link #onDeath(L2Character, L2Character, QuestState)} events <b>is not</b> done via the quest itself, but it is instead handled by the QuestState of a particular player.
	 * @param killer this parameter contains a reference to the exact instance of the NPC that <b>killed</b> the character.
	 * @param victim this parameter contains a reference to the exact instance of the character that got killed.
	 * @param qs this parameter contains a reference to the QuestState of whomever was interested (waiting) for this kill.
	 * @return
	 */
	public String onDeath(L2Character killer, L2Character victim, QuestState qs)
	{
		return onAdvEvent("", ((killer instanceof L2Npc) ? ((L2Npc) killer) : null), qs.getPlayer());
	}
	
	/**
	 * This function is called whenever a player clicks on a link in a quest dialog and whenever a timer fires.<br>
	 * If is not overridden by a subclass, then default to the returned value of the simpler (and older) {@link #onEvent(String, QuestState)} override.<br>
	 * If the player has a quest state, use it as parameter in the next call, otherwise return null.
	 * @param event this parameter contains a string identifier for the event.<br>
	 *            Generally, this string is passed directly via the link.<br>
	 *            For example:<br>
	 *            <code>
	 *            &lt;a action="bypass -h Quest 626_ADarkTwilight 31517-01.htm"&gt;hello&lt;/a&gt;
	 *            </code><br>
	 *            The above link sets the event variable to "31517-01.htm" for the quest 626_ADarkTwilight.<br>
	 *            In the case of timers, this will be the name of the timer.<br>
	 *            This parameter serves as a sort of identifier.
	 * @param npc this parameter contains a reference to the instance of NPC associated with this event.<br>
	 *            This may be the NPC registered in a timer, or the NPC with whom a player is speaking, etc.<br>
	 *            This parameter may be {@code null} in certain circumstances.
	 * @param player this parameter contains a reference to the player participating in this function.<br>
	 *            It may be the player speaking to the NPC, or the player who caused a timer to start (and owns that timer).<br>
	 *            This parameter may be {@code null} in certain circumstances.
	 * @return the text returned by the event (may be {@code null}, a filename or just text)
	 */
	public String onAdvEvent(String event, L2Npc npc, L2PcInstance player)
	{
		if (player != null)
		{
			final QuestState qs = player.getQuestState(getName());
			if (qs != null)
			{
				return onEvent(event, qs);
			}
		}
		return null;
	}
	
	/**
	 * This function is called in place of {@link #onAdvEvent(String, L2Npc, L2PcInstance)} if the former is not implemented.<br>
	 * If a script contains both {@link #onAdvEvent(String, L2Npc, L2PcInstance)} and this implementation, then this method will never be called unless the script's {@link #onAdvEvent(String, L2Npc, L2PcInstance)} explicitly calls this method.
	 * @param event this parameter contains a string identifier for the event.<br>
	 *            Generally, this string is passed directly via the link.<br>
	 *            For example:<br>
	 *            <code>
	 *            &lt;a action="bypass -h Quest 626_ADarkTwilight 31517-01.htm"&gt;hello&lt;/a&gt;
	 *            </code><br>
	 *            The above link sets the event variable to "31517-01.htm" for the quest 626_ADarkTwilight.<br>
	 *            In the case of timers, this will be the name of the timer.<br>
	 *            This parameter serves as a sort of identifier.
	 * @param qs this parameter contains a reference to the quest state of the player who used the link or started the timer.
	 * @return the text returned by the event (may be {@code null}, a filename or just text)
	 */
	public String onEvent(String event, QuestState qs)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player kills a NPC that is registered for the quest.
	 * @param npc this parameter contains a reference to the exact instance of the NPC that got killed.
	 * @param killer this parameter contains a reference to the exact instance of the player who killed the NPC.
	 * @param isSummon this parameter if it's {@code false} it denotes that the attacker was indeed the player, else it specifies that the killer was the player's pet.
	 * @return the text returned by the event (may be {@code null}, a filename or just text)
	 */
	public String onKill(L2Npc npc, L2PcInstance killer, boolean isSummon)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player clicks to the "Quest" link of an NPC that is registered for the quest.
	 * @param npc this parameter contains a reference to the exact instance of the NPC that the player is talking with.
	 * @param talker this parameter contains a reference to the exact instance of the player who is talking to the NPC.
	 * @return the text returned by the event (may be {@code null}, a filename or just text)
	 */
	public String onTalk(L2Npc npc, L2PcInstance talker)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player clicks to the "Quest" link of an NPC that is registered for the quest.<br>
	 * <font color="red"><b>This method overrides {@link #onTalk(L2Npc, L2PcInstance)}</b></font>
	 * @param npc this parameter contains a reference to the exact instance of the NPC that the player is talking with.
	 * @param talker this parameter contains a reference to the exact instance of the player who is talking to the NPC.
	 * @param isSimulated this parameter contains indication if the call to this onTalk is just to verify if the player has some buisness with this npc or not, no actions should be taken if its true!
	 * @return the text returned by the event (may be {@code null}, a filename or just text)
	 */
	public String onTalk(L2Npc npc, L2PcInstance talker, boolean isSimulated)
	{
		return onTalk(npc, talker);
	}
	
	/**
	 * This function is called whenever a player talks to an NPC that is registered for the quest.<br>
	 * That is, it is triggered from the very first click on the NPC, not via another dialog.<br>
	 * <b>Note 1:</b><br>
	 * Each NPC can be registered to at most one quest for triggering this function.<br>
	 * In other words, the same one NPC cannot respond to an "onFirstTalk" request from two different quests.<br>
	 * Attempting to register an NPC in two different quests for this function will result in one of the two registration being ignored.<br>
	 * <b>Note 2:</b><br>
	 * Since a Quest link isn't clicked in order to reach this, a quest state can be invalid within this function.<br>
	 * The coder of the script may need to create a new quest state (if necessary).<br>
	 * <b>Note 3:</b><br>
	 * The returned value of onFirstTalk replaces the default HTML that would have otherwise been loaded from a sub-folder of DatapackRoot/game/data/html/.<br>
	 * If you wish to show the default HTML, within onFirstTalk do npc.showChatWindow(player) and then return ""<br>
	 * @param npc this parameter contains a reference to the exact instance of the NPC that the player is talking with.
	 * @param player this parameter contains a reference to the exact instance of the player who is talking to the NPC.
	 * @return the text returned by the event (may be {@code null}, a filename or just text)
	 */
	public String onFirstTalk(L2Npc npc, L2PcInstance player)
	{
		return null;
	}
	
	/**
	 * @param item
	 * @param player
	 * @param event
	 * @return
	 */
	public String onItemEvent(L2ItemInstance item, L2PcInstance player, String event)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player request a skill list.<br>
	 * TODO: Re-implement, since Skill Trees rework it's support was removed.
	 * @param npc this parameter contains a reference to the exact instance of the NPC that the player requested the skill list.
	 * @param player this parameter contains a reference to the exact instance of the player who requested the skill list.
	 * @return
	 */
	public String onAcquireSkillList(L2Npc npc, L2PcInstance player)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player request a skill info.
	 * @param npc this parameter contains a reference to the exact instance of the NPC that the player requested the skill info.
	 * @param player this parameter contains a reference to the exact instance of the player who requested the skill info.
	 * @param skill this parameter contains a reference to the skill that the player requested its info.
	 * @return
	 */
	public String onAcquireSkillInfo(L2Npc npc, L2PcInstance player, Skill skill)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player acquire a skill.<br>
	 * TODO: Re-implement, since Skill Trees rework it's support was removed.
	 * @param npc this parameter contains a reference to the exact instance of the NPC that the player requested the skill.
	 * @param player this parameter contains a reference to the exact instance of the player who requested the skill.
	 * @param skill this parameter contains a reference to the skill that the player requested.
	 * @param type the skill learn type
	 * @return
	 */
	public String onAcquireSkill(L2Npc npc, L2PcInstance player, Skill skill, AcquireSkillType type)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player uses a quest item that has a quest events list.<br>
	 * TODO: complete this documentation and unhardcode it to work with all item uses not with those listed.
	 * @param item the quest item that the player used
	 * @param player the player who used the item
	 * @return
	 */
	public String onItemUse(L2Item item, L2PcInstance player)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player casts a skill near a registered NPC (1000 distance).<br>
	 * <b>Note:</b><br>
	 * If a skill does damage, both onSkillSee(..) and onAttack(..) will be triggered for the damaged NPC!<br>
	 * However, only onSkillSee(..) will be triggered if the skill does no damage,<br>
	 * or if it damages an NPC who has no onAttack(..) registration while near another NPC who has an onSkillSee registration.<br>
	 * TODO: confirm if the distance is 1000 and unhardcode.
	 * @param npc the NPC that saw the skill
	 * @param caster the player who cast the skill
	 * @param skill the actual skill that was used
	 * @param targets an array of all objects (can be any type of object, including mobs and players) that were affected by the skill
	 * @param isSummon if {@code true}, the skill was actually cast by the player's summon, not the player himself
	 * @return
	 */
	public String onSkillSee(L2Npc npc, L2PcInstance caster, Skill skill, L2Object[] targets, boolean isSummon)
	{
		return null;
	}
	
	/**
	 * This function is called whenever an NPC finishes casting a skill.
	 * @param npc the NPC that casted the skill.
	 * @param player the player who is the target of the skill. Can be {@code null}.
	 * @param skill the actual skill that was used by the NPC.
	 * @return
	 */
	public String onSpellFinished(L2Npc npc, L2PcInstance player, Skill skill)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a trap action is performed.
	 * @param trap this parameter contains a reference to the exact instance of the trap that was activated.
	 * @param trigger this parameter contains a reference to the exact instance of the character that triggered the action.
	 * @param action this parameter contains a reference to the action that was triggered.
	 * @return
	 */
	public String onTrapAction(L2TrapInstance trap, L2Character trigger, TrapAction action)
	{
		return null;
	}
	
	/**
	 * This function is called whenever an NPC spawns or re-spawns and passes a reference to the newly (re)spawned NPC.<br>
	 * Currently the only function that has no reference to a player.<br>
	 * It is useful for initializations, starting quest timers, displaying chat (NpcSay), and more.
	 * @param npc this parameter contains a reference to the exact instance of the NPC who just (re)spawned.
	 * @return
	 */
	public String onSpawn(L2Npc npc)
	{
		return null;
	}
	
	/**
	 * This function is called whenever an NPC is teleport.<br>
	 * @param npc this parameter contains a reference to the exact instance of the NPC who just teleport.
	 */
	protected void onTeleport(L2Npc npc)
	{
	}
	
	/**
	 * This function is called whenever an NPC is called by another NPC in the same faction.
	 * @param npc this parameter contains a reference to the exact instance of the NPC who is being asked for help.
	 * @param caller this parameter contains a reference to the exact instance of the NPC who is asking for help.<br>
	 * @param attacker this parameter contains a reference to the exact instance of the player who attacked.
	 * @param isSummon this parameter if it's {@code false} it denotes that the attacker was indeed the player, else it specifies that the attacker was the player's summon.
	 * @return
	 */
	public String onFactionCall(L2Npc npc, L2Npc caller, L2PcInstance attacker, boolean isSummon)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player enters an NPC aggression range.
	 * @param npc this parameter contains a reference to the exact instance of the NPC whose aggression range is being transgressed.
	 * @param player this parameter contains a reference to the exact instance of the player who is entering the NPC's aggression range.
	 * @param isSummon this parameter if it's {@code false} it denotes that the character that entered the aggression range was indeed the player, else it specifies that the character was the player's summon.
	 * @return
	 */
	public String onAggroRangeEnter(L2Npc npc, L2PcInstance player, boolean isSummon)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a NPC "sees" a creature.
	 * @param npc the NPC who sees the creature
	 * @param creature the creature seen by the NPC
	 * @param isSummon this parameter if it's {@code false} it denotes that the character seen by the NPC was indeed the player, else it specifies that the character was the player's summon
	 * @return
	 */
	public String onSeeCreature(L2Npc npc, L2Character creature, boolean isSummon)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player enters the game.
	 * @param player this parameter contains a reference to the exact instance of the player who is entering to the world.
	 * @return
	 */
	public String onEnterWorld(L2PcInstance player)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a character enters a registered zone.
	 * @param character this parameter contains a reference to the exact instance of the character who is entering the zone.
	 * @param zone this parameter contains a reference to the zone.
	 * @return
	 */
	public String onEnterZone(L2Character character, L2ZoneType zone)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a character exits a registered zone.
	 * @param character this parameter contains a reference to the exact instance of the character who is exiting the zone.
	 * @param zone this parameter contains a reference to the zone.
	 * @return
	 */
	public String onExitZone(L2Character character, L2ZoneType zone)
	{
		return null;
	}
	
	/**
	 * @param eventName - name of event
	 * @param sender - NPC, who sent event
	 * @param receiver - NPC, who received event
	 * @param reference - L2Object to pass, if needed
	 * @return
	 */
	public String onEventReceived(String eventName, L2Npc sender, L2Npc receiver, L2Object reference)
	{
		return null;
	}
	
	/**
	 * This function is called whenever a player wins an Olympiad Game.
	 * @param winner in this match.
	 * @param looser in this match.
	 * @param type the competition type.
	 */
	public void onOlympiadMatchFinish(Participant winner, Participant looser, CompetitionType type)
	{
		
	}
	
	/**
	 * This function is called whenever a player looses an Olympiad Game.
	 * @param loser this parameter contains a reference to the exact instance of the player who lose the competition.
	 * @param type this parameter contains a reference to the competition type.
	 */
	public void onOlympiadLose(L2PcInstance loser, CompetitionType type)
	{
		
	}
	
	/**
	 * This function is called whenever a NPC finishes moving
	 * @param npc registered NPC
	 */
	public void onMoveFinished(L2Npc npc)
	{
		
	}
	
	/**
	 * This function is called whenever a walker NPC (controlled by WalkingManager) arrive a walking node
	 * @param npc registered NPC
	 */
	public void onNodeArrived(L2Npc npc)
	{
		
	}
	
	/**
	 * This function is called whenever a walker NPC (controlled by WalkingManager) arrive to last node
	 * @param npc registered NPC
	 */
	public void onRouteFinished(L2Npc npc)
	{
		
	}
	
	/**
	 * @param mob
	 * @param player
	 * @param isSummon
	 * @return {@code true} if npc can hate the playable, {@code false} otherwise.
	 */
	public boolean onNpcHate(L2Attackable mob, L2PcInstance player, boolean isSummon)
	{
		return true;
	}
	
	/**
	 * @param summon
	 */
	public void onSummonSpawn(L2Summon summon)
	{
		
	}
	
	/**
	 * @param summon
	 */
	public void onSummonTalk(L2Summon summon)
	{
	}
	
	/**
	 * This listener is called when instance world is created.
	 * @param instance created instance world
	 * @param player player who create instance world
	 */
	public void onInstanceCreated(Instance instance, L2PcInstance player)
	{
	}
	
	/**
	 * This listener is called when instance being destroyed.
	 * @param instance instance world which will be destroyed
	 */
	public void onInstanceDestroy(Instance instance)
	{
	}
	
	/**
	 * This listener is called when player enter into instance.
	 * @param player player who enter
	 * @param instance instance where player enter
	 */
	public void onInstanceEnter(L2PcInstance player, Instance instance)
	{
	}
	
	/**
	 * This listener is called when player leave instance.
	 * @param player player who leaved
	 * @param instance instance which player leaved
	 */
	public void onInstanceLeave(L2PcInstance player, Instance instance)
	{
	}
	
	/**
	 * This listener is called when NPC {@code npc} being despawned.
	 * @param npc NPC which will be despawned
	 */
	public void onNpcDespawn(L2Npc npc)
	{
	}
	
	/**
	 * @param npc
	 * @param player
	 * @return {@code true} if player can see this npc, {@code false} otherwise.
	 */
	public boolean onCanSeeMe(L2Npc npc, L2PcInstance player)
	{
		return false;
	}
	
	/**
	 * Show an error message to the specified player.
	 * @param player the player to whom to send the error (must be a GM)
	 * @param t the {@link Throwable} to get the message/stacktrace from
	 * @return {@code false}
	 */
	public boolean showError(L2PcInstance player, Throwable t)
	{
		_log.log(Level.WARNING, getScriptFile().toAbsolutePath().toString(), t);
		if (t.getMessage() == null)
		{
			_log.warning(getClass().getSimpleName() + ": " + t.getMessage());
		}
		if ((player != null) && player.getAccessLevel().isGm())
		{
			final String res = "<html><body><title>Script error</title>" + CommonUtil.getStackTrace(t) + "</body></html>";
			return showResult(player, res);
		}
		return false;
	}
	
	/**
	 * @param player the player to whom to show the result
	 * @param res the message to show to the player
	 * @return {@code false} if the message was sent, {@code true} otherwise
	 * @see #showResult(L2PcInstance, String, L2Npc)
	 */
	public boolean showResult(L2PcInstance player, String res)
	{
		return showResult(player, res, null);
	}
	
	/**
	 * Show a message to the specified player.<br>
	 * <u><i>Concept:</i></u><br>
	 * Three cases are managed according to the value of the {@code res} parameter:<br>
	 * <ul>
	 * <li><u>{@code res} ends with ".htm" or ".html":</u> the contents of the specified HTML file are shown in a dialog window</li>
	 * <li><u>{@code res} starts with "&lt;html&gt;":</u> the contents of the parameter are shown in a dialog window</li>
	 * <li><u>all other cases :</u> the text contained in the parameter is shown in chat</li>
	 * </ul>
	 * @param player the player to whom to show the result
	 * @param npc npc to show the result for
	 * @param res the message to show to the player
	 * @return {@code false} if the message was sent, {@code true} otherwise
	 */
	public boolean showResult(L2PcInstance player, String res, L2Npc npc)
	{
		if ((res == null) || res.isEmpty() || (player == null))
		{
			return true;
		}
		
		if (res.endsWith(".htm") || res.endsWith(".html"))
		{
			showHtmlFile(player, res, npc);
		}
		else if (res.startsWith("<html>"))
		{
			final NpcHtmlMessage npcReply = new NpcHtmlMessage(npc != null ? npc.getObjectId() : 0, res);
			if (npc != null)
			{
				npcReply.replace("%objectId%", npc.getObjectId());
			}
			npcReply.replace("%playername%", player.getName());
			player.sendPacket(npcReply);
			player.sendPacket(ActionFailed.STATIC_PACKET);
		}
		else
		{
			player.sendMessage(res);
		}
		return false;
	}
	
	/**
	 * Loads all quest states and variables for the specified player.
	 * @param player the player who is entering the world
	 */
	public static void playerEnter(L2PcInstance player)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement invalidQuestData = con.prepareStatement("DELETE FROM character_quests WHERE charId = ? AND name = ?");
			PreparedStatement invalidQuestDataVar = con.prepareStatement("DELETE FROM character_quests WHERE charId = ? AND name = ? AND var = ?");
			PreparedStatement ps1 = con.prepareStatement("SELECT name, value FROM character_quests WHERE charId = ? AND var = ?"))
		{
			// Get list of quests owned by the player from database
			
			ps1.setInt(1, player.getObjectId());
			ps1.setString(2, "<state>");
			try (ResultSet rs = ps1.executeQuery())
			{
				while (rs.next())
				{
					// Get the ID of the quest and its state
					final String questId = rs.getString("name");
					final String statename = rs.getString("value");
					
					// Search quest associated with the ID
					final Quest q = QuestManager.getInstance().getQuest(questId);
					if (q == null)
					{
						_log.finer("Unknown quest " + questId + " for player " + player.getName());
						if (Config.AUTODELETE_INVALID_QUEST_DATA)
						{
							invalidQuestData.setInt(1, player.getObjectId());
							invalidQuestData.setString(2, questId);
							invalidQuestData.executeUpdate();
						}
						continue;
					}
					
					// Create a new QuestState for the player that will be added to the player's list of quests
					new QuestState(q, player, State.getStateId(statename));
				}
			}
			
			// Get list of quests owned by the player from the DB in order to add variables used in the quest.
			try (PreparedStatement ps2 = con.prepareStatement("SELECT name, var, value FROM character_quests WHERE charId = ? AND var <> ?"))
			{
				ps2.setInt(1, player.getObjectId());
				ps2.setString(2, "<state>");
				try (ResultSet rs = ps2.executeQuery())
				{
					while (rs.next())
					{
						final String questId = rs.getString("name");
						final String var = rs.getString("var");
						final String value = rs.getString("value");
						// Get the QuestState saved in the loop before
						final QuestState qs = player.getQuestState(questId);
						if (qs == null)
						{
							_log.finer("Lost variable " + var + " in quest " + questId + " for player " + player.getName());
							if (Config.AUTODELETE_INVALID_QUEST_DATA)
							{
								invalidQuestDataVar.setInt(1, player.getObjectId());
								invalidQuestDataVar.setString(2, questId);
								invalidQuestDataVar.setString(3, var);
								invalidQuestDataVar.executeUpdate();
							}
							continue;
						}
						// Add parameter to the quest
						qs.setInternal(var, value);
					}
				}
			}
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not insert char quest:", e);
		}
	}
	
	/**
	 * Insert (or update) in the database variables that need to stay persistent for this quest after a reboot.<br>
	 * This function is for storage of values that do not related to a specific player but are global for all characters.<br>
	 * For example, if we need to disable a quest-gatekeeper until a certain time (as is done with some grand-boss gatekeepers), we can save that time in the DB.
	 * @param var the name of the variable to save
	 * @param value the value of the variable
	 */
	public final void saveGlobalQuestVar(String var, String value)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("REPLACE INTO quest_global_data (quest_name,var,value) VALUES (?,?,?)"))
		{
			statement.setString(1, getName());
			statement.setString(2, var);
			statement.setString(3, value);
			statement.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not insert global quest variable:", e);
		}
	}
	
	/**
	 * Read from the database a previously saved variable for this quest.<br>
	 * Due to performance considerations, this function should best be used only when the quest is first loaded.<br>
	 * Subclasses of this class can define structures into which these loaded values can be saved.<br>
	 * However, on-demand usage of this function throughout the script is not prohibited, only not recommended.<br>
	 * Values read from this function were entered by calls to "saveGlobalQuestVar".
	 * @param var the name of the variable to load
	 * @return the current value of the specified variable, or an empty string if the variable does not exist
	 */
	public final String loadGlobalQuestVar(String var)
	{
		String result = "";
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("SELECT value FROM quest_global_data WHERE quest_name = ? AND var = ?"))
		{
			statement.setString(1, getName());
			statement.setString(2, var);
			try (ResultSet rs = statement.executeQuery())
			{
				if (rs.first())
				{
					result = rs.getString(1);
				}
			}
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not load global quest variable:", e);
		}
		return result;
	}
	
	/**
	 * Permanently delete from the database a global quest variable that was previously saved for this quest.
	 * @param var the name of the variable to delete
	 */
	public final void deleteGlobalQuestVar(String var)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("DELETE FROM quest_global_data WHERE quest_name = ? AND var = ?"))
		{
			statement.setString(1, getName());
			statement.setString(2, var);
			statement.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not delete global quest variable:", e);
		}
	}
	
	/**
	 * Permanently delete from the database all global quest variables that were previously saved for this quest.
	 */
	public final void deleteAllGlobalQuestVars()
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("DELETE FROM quest_global_data WHERE quest_name = ?"))
		{
			statement.setString(1, getName());
			statement.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not delete global quest variables:", e);
		}
	}
	
	/**
	 * Insert in the database the quest for the player.
	 * @param qs the {@link QuestState} object whose variable to insert
	 * @param var the name of the variable
	 * @param value the value of the variable
	 */
	public static void createQuestVarInDb(QuestState qs, String var, String value)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("INSERT INTO character_quests (charId,name,var,value) VALUES (?,?,?,?) ON DUPLICATE KEY UPDATE value=?"))
		{
			statement.setInt(1, qs.getPlayer().getObjectId());
			statement.setString(2, qs.getQuestName());
			statement.setString(3, var);
			statement.setString(4, value);
			statement.setString(5, value);
			statement.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not insert char quest:", e);
		}
	}
	
	/**
	 * Update the value of the variable "var" for the specified quest in database
	 * @param qs the {@link QuestState} object whose variable to update
	 * @param var the name of the variable
	 * @param value the value of the variable
	 */
	public static void updateQuestVarInDb(QuestState qs, String var, String value)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("UPDATE character_quests SET value=? WHERE charId=? AND name=? AND var = ?"))
		{
			statement.setString(1, value);
			statement.setInt(2, qs.getPlayer().getObjectId());
			statement.setString(3, qs.getQuestName());
			statement.setString(4, var);
			statement.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not update char quest:", e);
		}
	}
	
	/**
	 * Delete a variable of player's quest from the database.
	 * @param qs the {@link QuestState} object whose variable to delete
	 * @param var the name of the variable to delete
	 */
	public static void deleteQuestVarInDb(QuestState qs, String var)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("DELETE FROM character_quests WHERE charId=? AND name=? AND var=?"))
		{
			statement.setInt(1, qs.getPlayer().getObjectId());
			statement.setString(2, qs.getQuestName());
			statement.setString(3, var);
			statement.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not delete char quest:", e);
		}
	}
	
	/**
	 * Delete from the database all variables and states of the specified quest state.
	 * @param qs the {@link QuestState} object whose variables to delete
	 * @param repeatable if {@code false}, the state variable will be preserved, otherwise it will be deleted as well
	 */
	public static void deleteQuestInDb(QuestState qs, boolean repeatable)
	{
		try (Connection con = DatabaseFactory.getInstance().getConnection();
			PreparedStatement ps = con.prepareStatement(repeatable ? QUEST_DELETE_FROM_CHAR_QUERY : QUEST_DELETE_FROM_CHAR_QUERY_NON_REPEATABLE_QUERY))
		{
			ps.setInt(1, qs.getPlayer().getObjectId());
			ps.setString(2, qs.getQuestName());
			if (!repeatable)
			{
				ps.setString(3, "<state>");
			}
			ps.executeUpdate();
		}
		catch (Exception e)
		{
			_log.log(Level.WARNING, "could not delete char quest:", e);
		}
	}
	
	/**
	 * Create a database record for the specified quest state.
	 * @param qs the {@link QuestState} object whose data to write in the database
	 */
	public static void createQuestInDb(QuestState qs)
	{
		createQuestVarInDb(qs, "<state>", State.getStateName(qs.getState()));
	}
	
	/**
	 * Update a quest state record of the specified quest state in database.
	 * @param qs the {@link QuestState} object whose data to update in the database
	 */
	public static void updateQuestInDb(QuestState qs)
	{
		updateQuestVarInDb(qs, "<state>", State.getStateName(qs.getState()));
	}
	
	/**
	 * @param player the player whose language settings to use in finding the html of the right language
	 * @return the default html for when no quest is available: "You are either not on a quest that involves this NPC.."
	 */
	public static String getNoQuestMsg(L2PcInstance player)
	{
		final String result = HtmCache.getInstance().getHtm(player.getHtmlPrefix(), "data/html/noquest.htm");
		if ((result != null) && (result.length() > 0))
		{
			return result;
		}
		return DEFAULT_NO_QUEST_MSG;
	}
	
	/**
	 * @param player the player whose language settings to use in finding the html of the right language
	 * @return the default html for when player don't have minimal level for reward: "You cannot receive quest rewards as your character.."
	 */
	public static String getNoQuestLevelRewardMsg(L2PcInstance player)
	{
		return HtmCache.getInstance().getHtm(player.getHtmlPrefix(), "data/html/noquestlevelreward.html");
	}
	
	/**
	 * @param player the player whose language settings to use in finding the html of the right language
	 * @return the default html for when quest is already completed
	 */
	public static String getAlreadyCompletedMsg(L2PcInstance player)
	{
		return getAlreadyCompletedMsg(player, QuestType.ONE_TIME);
	}
	
	/**
	 * @param player the player whose language settings to use in finding the html of the right language
	 * @param type the Quest type
	 * @return the default html for when quest is already completed
	 */
	public static String getAlreadyCompletedMsg(L2PcInstance player, QuestType type)
	{
		return HtmCache.getInstance().getHtm(player.getHtmlPrefix(), (type == QuestType.ONE_TIME ? "data/html/alreadyCompleted.html" : "data/html/alreadyCompletedDaily.html"));
	}
	
	// TODO: Clean up these methods
	public void addStartNpc(int npcId)
	{
		setNpcQuestStartId(npcId);
	}
	
	public void addFirstTalkId(int npcId)
	{
		setNpcFirstTalkId(event -> notifyFirstTalk(event.getNpc(), event.getActiveChar()), npcId);
	}
	
	public void addTalkId(int npcId)
	{
		setNpcTalkId(npcId);
	}
	
	public void addKillId(int npcId)
	{
		setAttackableKillId(kill -> notifyKill(kill.getTarget(), kill.getAttacker(), kill.isSummon()), npcId);
	}
	
	public void addAttackId(int npcId)
	{
		setAttackableAttackId(attack -> notifyAttack(attack.getTarget(), attack.getAttacker(), attack.getDamage(), attack.isSummon(), attack.getSkill()), npcId);
	}
	
	/**
	 * Add the quest to the NPC's startQuest
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addStartNpc(int... npcIds)
	{
		setNpcQuestStartId(npcIds);
	}
	
	/**
	 * Add the quest to the NPC's startQuest
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addStartNpc(Collection<Integer> npcIds)
	{
		setNpcQuestStartId(npcIds);
	}
	
	/**
	 * Add the quest to the NPC's first-talk (default action dialog).
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addFirstTalkId(int... npcIds)
	{
		setNpcFirstTalkId(event -> notifyFirstTalk(event.getNpc(), event.getActiveChar()), npcIds);
	}
	
	/**
	 * Add the quest to the NPC's first-talk (default action dialog).
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addFirstTalkId(Collection<Integer> npcIds)
	{
		setNpcFirstTalkId(event -> notifyFirstTalk(event.getNpc(), event.getActiveChar()), npcIds);
	}
	
	/**
	 * Add the NPC to the AcquireSkill dialog.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addAcquireSkillId(int... npcIds)
	{
		setPlayerSkillLearnId(event -> notifyAcquireSkill(event.getTrainer(), event.getActiveChar(), event.getSkill(), event.getAcquireType()), npcIds);
	}
	
	/**
	 * Add the NPC to the AcquireSkill dialog.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addAcquireSkillId(Collection<Integer> npcIds)
	{
		setPlayerSkillLearnId(event -> notifyAcquireSkill(event.getTrainer(), event.getActiveChar(), event.getSkill(), event.getAcquireType()), npcIds);
	}
	
	/**
	 * Add the Item to the notify when player speaks with it.
	 * @param itemIds the IDs of the Item to register
	 */
	public void addItemBypassEventId(int... itemIds)
	{
		setItemBypassEvenId(event -> notifyItemEvent(event.getItem(), event.getActiveChar(), event.getEvent()), itemIds);
	}
	
	/**
	 * Add the Item to the notify when player speaks with it.
	 * @param itemIds the IDs of the Item to register
	 */
	public void addItemBypassEventId(Collection<Integer> itemIds)
	{
		setItemBypassEvenId(event -> notifyItemEvent(event.getItem(), event.getActiveChar(), event.getEvent()), itemIds);
	}
	
	/**
	 * Add the Item to the notify when player speaks with it.
	 * @param itemIds the IDs of the Item to register
	 */
	public void addItemTalkId(int... itemIds)
	{
		setItemTalkId(event -> notifyItemTalk(event.getItem(), event.getActiveChar()), itemIds);
	}
	
	/**
	 * Add the Item to the notify when player speaks with it.
	 * @param itemIds the IDs of the Item to register
	 */
	public void addItemTalkId(Collection<Integer> itemIds)
	{
		setItemTalkId(event -> notifyItemTalk(event.getItem(), event.getActiveChar()), itemIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed mob will respond to for attack events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addAttackId(int... npcIds)
	{
		setAttackableAttackId(attack -> notifyAttack(attack.getTarget(), attack.getAttacker(), attack.getDamage(), attack.isSummon(), attack.getSkill()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed mob will respond to for attack events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addAttackId(Collection<Integer> npcIds)
	{
		setAttackableAttackId(attack -> notifyAttack(attack.getTarget(), attack.getAttacker(), attack.getDamage(), attack.isSummon(), attack.getSkill()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed mob will respond to for kill events.
	 * @param npcIds
	 */
	public void addKillId(int... npcIds)
	{
		setAttackableKillId(kill -> notifyKill(kill.getTarget(), kill.getAttacker(), kill.isSummon()), npcIds);
	}
	
	/**
	 * Add this quest event to the collection of NPC IDs that will respond to for on kill events.
	 * @param npcIds the collection of NPC IDs
	 */
	public void addKillId(Collection<Integer> npcIds)
	{
		setAttackableKillId(kill -> notifyKill(kill.getTarget(), kill.getAttacker(), kill.isSummon()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for Talk Events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addTalkId(int... npcIds)
	{
		setNpcTalkId(npcIds);
	}
	
	public void addTalkId(Collection<Integer> npcIds)
	{
		setNpcTalkId(npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for Teleport Events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addTeleportId(int... npcIds)
	{
		setNpcTeleportId(event -> notifyTeleport(event.getNpc()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for Teleport Events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addTeleportId(Collection<Integer> npcIds)
	{
		setNpcTeleportId(event -> notifyTeleport(event.getNpc()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for spawn events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSpawnId(int... npcIds)
	{
		setNpcSpawnId(event -> notifySpawn(event.getNpc()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for spawn events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSpawnId(Collection<Integer> npcIds)
	{
		setNpcSpawnId(event -> notifySpawn(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onNpcDespawn to NPCs.
	 * @param npcIds
	 */
	public void addDespawnId(int... npcIds)
	{
		setNpcDespawnId(event -> onNpcDespawn(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onNpcDespawn to NPCs.
	 * @param npcIds
	 */
	public void addDespawnId(Collection<Integer> npcIds)
	{
		setNpcDespawnId(event -> onNpcDespawn(event.getNpc()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for skill see events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSkillSeeId(int... npcIds)
	{
		setNpcSkillSeeId(event -> notifySkillSee(event.getTarget(), event.getCaster(), event.getSkill(), event.getTargets(), event.isSummon()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for skill see events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSkillSeeId(Collection<Integer> npcIds)
	{
		setNpcSkillSeeId(event -> notifySkillSee(event.getTarget(), event.getCaster(), event.getSkill(), event.getTargets(), event.isSummon()), npcIds);
	}
	
	/**
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSpellFinishedId(int... npcIds)
	{
		setNpcSkillFinishedId(event -> notifySpellFinished(event.getCaster(), event.getTarget(), event.getSkill()), npcIds);
	}
	
	/**
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSpellFinishedId(Collection<Integer> npcIds)
	{
		setNpcSkillFinishedId(event -> notifySpellFinished(event.getCaster(), event.getTarget(), event.getSkill()), npcIds);
	}
	
	/**
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addTrapActionId(int... npcIds)
	{
		setTrapActionId(event -> notifyTrapAction(event.getTrap(), event.getTrigger(), event.getAction()), npcIds);
	}
	
	/**
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addTrapActionId(Collection<Integer> npcIds)
	{
		setTrapActionId(event -> notifyTrapAction(event.getTrap(), event.getTrigger(), event.getAction()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for faction call events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addFactionCallId(int... npcIds)
	{
		setAttackableFactionIdId(event -> notifyFactionCall(event.getNpc(), event.getCaller(), event.getAttacker(), event.isSummon()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for faction call events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addFactionCallId(Collection<Integer> npcIds)
	{
		setAttackableFactionIdId(event -> notifyFactionCall(event.getNpc(), event.getCaller(), event.getAttacker(), event.isSummon()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for character see events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addAggroRangeEnterId(int... npcIds)
	{
		setAttackableAggroRangeEnterId(event -> notifyAggroRangeEnter(event.getNpc(), event.getActiveChar(), event.isSummon()), npcIds);
	}
	
	/**
	 * Add this quest to the list of quests that the passed npc will respond to for character see events.
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addAggroRangeEnterId(Collection<Integer> npcIds)
	{
		setAttackableAggroRangeEnterId(event -> notifyAggroRangeEnter(event.getNpc(), event.getActiveChar(), event.isSummon()), npcIds);
	}
	
	/**
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSeeCreatureId(int... npcIds)
	{
		setNpcCreatureSeeId(event -> notifySeeCreature(event.getNpc(), event.getCreature(), event.isSummon()), npcIds);
	}
	
	/**
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addSeeCreatureId(Collection<Integer> npcIds)
	{
		setNpcCreatureSeeId(event -> notifySeeCreature(event.getNpc(), event.getCreature(), event.isSummon()), npcIds);
	}
	
	/**
	 * Register onEnterZone trigger for zone
	 * @param zoneId the ID of the zone to register
	 */
	public void addEnterZoneId(int zoneId)
	{
		setCreatureZoneEnterId(event -> notifyEnterZone(event.getCreature(), event.getZone()), zoneId);
	}
	
	/**
	 * Register onEnterZone trigger for zones
	 * @param zoneIds the IDs of the zones to register
	 */
	public void addEnterZoneId(int... zoneIds)
	{
		setCreatureZoneEnterId(event -> notifyEnterZone(event.getCreature(), event.getZone()), zoneIds);
	}
	
	/**
	 * Register onEnterZone trigger for zones
	 * @param zoneIds the IDs of the zones to register
	 */
	public void addEnterZoneId(Collection<Integer> zoneIds)
	{
		setCreatureZoneEnterId(event -> notifyEnterZone(event.getCreature(), event.getZone()), zoneIds);
	}
	
	/**
	 * Register onExitZone trigger for zone
	 * @param zoneId the ID of the zone to register
	 */
	public void addExitZoneId(int zoneId)
	{
		setCreatureZoneExitId(event -> notifyExitZone(event.getCreature(), event.getZone()), zoneId);
	}
	
	/**
	 * Register onExitZone trigger for zones
	 * @param zoneIds the IDs of the zones to register
	 */
	public void addExitZoneId(int... zoneIds)
	{
		setCreatureZoneExitId(event -> notifyExitZone(event.getCreature(), event.getZone()), zoneIds);
	}
	
	/**
	 * Register onExitZone trigger for zones
	 * @param zoneIds the IDs of the zones to register
	 */
	public void addExitZoneId(Collection<Integer> zoneIds)
	{
		setCreatureZoneExitId(event -> notifyExitZone(event.getCreature(), event.getZone()), zoneIds);
	}
	
	/**
	 * Register onEventReceived trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addEventReceivedId(int... npcIds)
	{
		setNpcEventReceivedId(event -> notifyEventReceived(event.getEventName(), event.getSender(), event.getReceiver(), event.getReference()), npcIds);
	}
	
	/**
	 * Register onEventReceived trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addEventReceivedId(Collection<Integer> npcIds)
	{
		setNpcEventReceivedId(event -> notifyEventReceived(event.getEventName(), event.getSender(), event.getReceiver(), event.getReference()), npcIds);
	}
	
	/**
	 * Register onMoveFinished trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addMoveFinishedId(int... npcIds)
	{
		setNpcMoveFinishedId(event -> notifyMoveFinished(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onMoveFinished trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addMoveFinishedId(Collection<Integer> npcIds)
	{
		setNpcMoveFinishedId(event -> notifyMoveFinished(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onNodeArrived trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addNodeArrivedId(int... npcIds)
	{
		setNpcMoveNodeArrivedId(event -> notifyNodeArrived(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onNodeArrived trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addNodeArrivedId(Collection<Integer> npcIds)
	{
		setNpcMoveNodeArrivedId(event -> notifyNodeArrived(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onRouteFinished trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addRouteFinishedId(int... npcIds)
	{
		setNpcMoveRouteFinishedId(event -> notifyRouteFinished(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onRouteFinished trigger for NPC
	 * @param npcIds the IDs of the NPCs to register
	 */
	public void addRouteFinishedId(Collection<Integer> npcIds)
	{
		setNpcMoveRouteFinishedId(event -> notifyRouteFinished(event.getNpc()), npcIds);
	}
	
	/**
	 * Register onNpcHate trigger for NPC
	 * @param npcIds
	 */
	public void addNpcHateId(int... npcIds)
	{
		addNpcHateId(event -> new TerminateReturn(!onNpcHate(event.getNpc(), event.getActiveChar(), event.isSummon()), false, false), npcIds);
	}
	
	/**
	 * Register onNpcHate trigger for NPC
	 * @param npcIds
	 */
	public void addNpcHateId(Collection<Integer> npcIds)
	{
		addNpcHateId(event -> new TerminateReturn(!onNpcHate(event.getNpc(), event.getActiveChar(), event.isSummon()), false, false), npcIds);
	}
	
	/**
	 * Register onSummonSpawn trigger when summon is spawned.
	 * @param npcIds
	 */
	public void addSummonSpawnId(int... npcIds)
	{
		setPlayerSummonSpawnId(event -> onSummonSpawn(event.getSummon()), npcIds);
	}
	
	/**
	 * Register onSummonSpawn trigger when summon is spawned.
	 * @param npcIds
	 */
	public void addSummonSpawnId(Collection<Integer> npcIds)
	{
		setPlayerSummonSpawnId(event -> onSummonSpawn(event.getSummon()), npcIds);
	}
	
	/**
	 * Register onSummonTalk trigger when master talked to summon.
	 * @param npcIds
	 */
	public void addSummonTalkId(int... npcIds)
	{
		setPlayerSummonTalkId(event -> onSummonTalk(event.getSummon()), npcIds);
	}
	
	/**
	 * Register onSummonTalk trigger when summon is spawned.
	 * @param npcIds
	 */
	public void addSummonTalkId(Collection<Integer> npcIds)
	{
		setPlayerSummonTalkId(event -> onSummonTalk(event.getSummon()), npcIds);
	}
	
	/**
	 * Registers onCanSeeMe trigger whenever an npc info must be sent to player.
	 * @param npcIds
	 */
	public void addCanSeeMeId(int... npcIds)
	{
		addNpcHateId(event -> new TerminateReturn(!notifyOnCanSeeMe(event.getNpc(), event.getActiveChar()), false, false), npcIds);
	}
	
	/**
	 * Registers onCanSeeMe trigger whenever an npc info must be sent to player.
	 * @param npcIds
	 */
	public void addCanSeeMeId(Collection<Integer> npcIds)
	{
		addNpcHateId(event -> new TerminateReturn(!notifyOnCanSeeMe(event.getNpc(), event.getActiveChar()), false, false), npcIds);
	}
	
	public void addOlympiadMatchFinishId()
	{
		setOlympiadMatchResult(event -> notifyOlympiadMatch(event.getWinner(), event.getLoser(), event.getCompetitionType()));
	}
	
	/**
	 * Register onInstanceCreated trigger when instance is created.
	 * @param templateIds
	 */
	public void addInstanceCreatedId(int... templateIds)
	{
		setInstanceCreatedId(event -> onInstanceCreated(event.getInstanceWorld(), event.getCreator()), templateIds);
	}
	
	/**
	 * Register onInstanceCreated trigger when instance is created.
	 * @param templateIds
	 */
	public void addInstanceCreatedId(Collection<Integer> templateIds)
	{
		setInstanceCreatedId(event -> onInstanceCreated(event.getInstanceWorld(), event.getCreator()), templateIds);
	}
	
	/**
	 * Register onInstanceDestroy trigger when instance is destroyed.
	 * @param templateIds
	 */
	public void addInstanceDestroyId(int... templateIds)
	{
		setInstanceDestroyId(event -> onInstanceDestroy(event.getInstanceWorld()), templateIds);
	}
	
	/**
	 * Register onInstanceCreate trigger when instance is destroyed.
	 * @param templateIds
	 */
	public void addInstanceDestroyId(Collection<Integer> templateIds)
	{
		setInstanceDestroyId(event -> onInstanceDestroy(event.getInstanceWorld()), templateIds);
	}
	
	/**
	 * Register onInstanceEnter trigger when player enter into instance.
	 * @param templateIds
	 */
	public void addInstanceEnterId(int... templateIds)
	{
		setInstanceEnterId(event -> onInstanceEnter(event.getPlayer(), event.getInstanceWorld()), templateIds);
	}
	
	/**
	 * Register onInstanceEnter trigger when player enter into instance.
	 * @param templateIds
	 */
	public void addInstanceEnterId(Collection<Integer> templateIds)
	{
		setInstanceEnterId(event -> onInstanceEnter(event.getPlayer(), event.getInstanceWorld()), templateIds);
	}
	
	/**
	 * Register onInstanceEnter trigger when player leave from instance.
	 * @param templateIds
	 */
	public void addInstanceLeaveId(int... templateIds)
	{
		setInstanceLeaveId(event -> onInstanceLeave(event.getPlayer(), event.getInstanceWorld()), templateIds);
	}
	
	/**
	 * Register onInstanceEnter trigger when player leave from instance.
	 * @param templateIds
	 */
	public void addInstanceLeaveId(Collection<Integer> templateIds)
	{
		setInstanceLeaveId(event -> onInstanceLeave(event.getPlayer(), event.getInstanceWorld()), templateIds);
	}
	
	/**
	 * Use this method to get a random party member from a player's party.<br>
	 * Useful when distributing rewards after killing an NPC.
	 * @param player this parameter represents the player whom the party will taken.
	 * @return {@code null} if {@code player} is {@code null}, {@code player} itself if the player does not have a party, and a random party member in all other cases
	 */
	public L2PcInstance getRandomPartyMember(L2PcInstance player)
	{
		if (player == null)
		{
			return null;
		}
		final L2Party party = player.getParty();
		if ((party == null) || (party.getMembers().isEmpty()))
		{
			return player;
		}
		return party.getMembers().get(Rnd.get(party.getMembers().size()));
	}
	
	/**
	 * Get a random party member with required cond value.
	 * @param player the instance of a player whose party is to be searched
	 * @param cond the value of the "cond" variable that must be matched
	 * @return a random party member that matches the specified condition, or {@code null} if no match was found
	 */
	public L2PcInstance getRandomPartyMember(L2PcInstance player, int cond)
	{
		return getRandomPartyMember(player, "cond", String.valueOf(cond));
	}
	
	/**
	 * Auxiliary function for party quests.<br>
	 * Note: This function is only here because of how commonly it may be used by quest developers.<br>
	 * For any variations on this function, the quest script can always handle things on its own.
	 * @param player the instance of a player whose party is to be searched
	 * @param var the quest variable to look for in party members. If {@code null}, it simply unconditionally returns a random party member
	 * @param value the value of the specified quest variable the random party member must have
	 * @return a random party member that matches the specified conditions or {@code null} if no match was found.<br>
	 *         If the {@code var} parameter is {@code null}, a random party member is selected without any conditions.<br>
	 *         The party member must be within a range of 1500 ingame units of the target of the reference player, or, if no target exists, within the same range of the player itself
	 */
	public L2PcInstance getRandomPartyMember(L2PcInstance player, String var, String value)
	{
		// if no valid player instance is passed, there is nothing to check...
		if (player == null)
		{
			return null;
		}
		
		// for null var condition, return any random party member.
		if (var == null)
		{
			return getRandomPartyMember(player);
		}
		
		// normal cases...if the player is not in a party, check the player's state
		QuestState temp = null;
		final L2Party party = player.getParty();
		// if this player is not in a party, just check if this player instance matches the conditions itself
		if ((party == null) || (party.getMembers().isEmpty()))
		{
			temp = player.getQuestState(getName());
			if ((temp != null) && temp.isSet(var) && temp.get(var).equalsIgnoreCase(value))
			{
				return player; // match
			}
			return null; // no match
		}
		
		// if the player is in a party, gather a list of all matching party members (possibly including this player)
		final List<L2PcInstance> candidates = new ArrayList<>();
		// get the target for enforcing distance limitations.
		L2Object target = player.getTarget();
		if (target == null)
		{
			target = player;
		}
		
		for (L2PcInstance partyMember : party.getMembers())
		{
			if (partyMember == null)
			{
				continue;
			}
			temp = partyMember.getQuestState(getName());
			if ((temp != null) && (temp.get(var) != null) && (temp.get(var)).equalsIgnoreCase(value) && partyMember.isInsideRadius(target, 1500, true, false))
			{
				candidates.add(partyMember);
			}
		}
		// if there was no match, return null...
		if (candidates.isEmpty())
		{
			return null;
		}
		// if a match was found from the party, return one of them at random.
		return candidates.get(Rnd.get(candidates.size()));
	}
	
	/**
	 * Auxiliary function for party quests.<br>
	 * Note: This function is only here because of how commonly it may be used by quest developers.<br>
	 * For any variations on this function, the quest script can always handle things on its own.
	 * @param player the player whose random party member is to be selected
	 * @param state the quest state required of the random party member
	 * @return {@code null} if nothing was selected or a random party member that has the specified quest state
	 */
	public L2PcInstance getRandomPartyMemberState(L2PcInstance player, byte state)
	{
		// if no valid player instance is passed, there is nothing to check...
		if (player == null)
		{
			return null;
		}
		
		// normal cases...if the player is not in a party check the player's state
		QuestState temp = null;
		final L2Party party = player.getParty();
		// if this player is not in a party, just check if this player instance matches the conditions itself
		if ((party == null) || (party.getMembers().isEmpty()))
		{
			temp = player.getQuestState(getName());
			if ((temp != null) && (temp.getState() == state))
			{
				return player; // match
			}
			
			return null; // no match
		}
		
		// if the player is in a party, gather a list of all matching party members (possibly
		// including this player)
		final List<L2PcInstance> candidates = new ArrayList<>();
		
		// get the target for enforcing distance limitations.
		L2Object target = player.getTarget();
		if (target == null)
		{
			target = player;
		}
		
		for (L2PcInstance partyMember : party.getMembers())
		{
			if (partyMember == null)
			{
				continue;
			}
			temp = partyMember.getQuestState(getName());
			if ((temp != null) && (temp.getState() == state) && partyMember.isInsideRadius(target, 1500, true, false))
			{
				candidates.add(partyMember);
			}
		}
		// if there was no match, return null...
		if (candidates.isEmpty())
		{
			return null;
		}
		
		// if a match was found from the party, return one of them at random.
		return candidates.get(Rnd.get(candidates.size()));
	}
	
	/**
	 * Get a random party member from the specified player's party.<br>
	 * If the player is not in a party, only the player himself is checked.<br>
	 * The lucky member is chosen by standard loot roll rules -<br>
	 * each member rolls a random number, the one with the highest roll wins.
	 * @param player the player whose party to check
	 * @param npc the NPC used for distance and other checks (if {@link #checkPartyMember(L2PcInstance, L2Npc)} is overriden)
	 * @return the random party member or {@code null}
	 */
	public L2PcInstance getRandomPartyMember(L2PcInstance player, L2Npc npc)
	{
		if ((player == null) || !checkDistanceToTarget(player, npc))
		{
			return null;
		}
		final L2Party party = player.getParty();
		L2PcInstance luckyPlayer = null;
		if (party == null)
		{
			if (checkPartyMember(player, npc))
			{
				luckyPlayer = player;
			}
		}
		else
		{
			int highestRoll = 0;
			
			for (L2PcInstance member : party.getMembers())
			{
				final int rnd = getRandom(1000);
				
				if ((rnd > highestRoll) && checkPartyMember(member, npc))
				{
					highestRoll = rnd;
					luckyPlayer = member;
				}
			}
		}
		if ((luckyPlayer != null) && checkDistanceToTarget(luckyPlayer, npc))
		{
			return luckyPlayer;
		}
		return null;
	}
	
	/**
	 * This method is called for every party member in {@link #getRandomPartyMember(L2PcInstance, L2Npc)}.<br>
	 * It is intended to be overriden by the specific quest implementations.
	 * @param player the player to check
	 * @param npc the NPC that was passed to {@link #getRandomPartyMember(L2PcInstance, L2Npc)}
	 * @return {@code true} if this party member passes the check, {@code false} otherwise
	 */
	public boolean checkPartyMember(L2PcInstance player, L2Npc npc)
	{
		return true;
	}
	
	/**
	 * Get a random party member from the player's party who has this quest at the specified quest progress.<br>
	 * If the player is not in a party, only the player himself is checked.
	 * @param player the player whose random party member state to get
	 * @param condition the quest progress step the random member should be at (-1 = check only if quest is started)
	 * @param playerChance how many times more chance does the player get compared to other party members (3 - 3x more chance).<br>
	 *            On retail servers, the killer usually gets 2-3x more chance than other party members
	 * @param target the NPC to use for the distance check (can be null)
	 * @return the {@link QuestState} object of the random party member or {@code null} if none matched the condition
	 */
	public QuestState getRandomPartyMemberState(L2PcInstance player, int condition, int playerChance, L2Npc target)
	{
		if ((player == null) || (playerChance < 1))
		{
			return null;
		}
		
		QuestState qs = player.getQuestState(getName());
		if (!player.isInParty())
		{
			if (!checkPartyMemberConditions(qs, condition, target))
			{
				return null;
			}
			if (!checkDistanceToTarget(player, target))
			{
				return null;
			}
			return qs;
		}
		
		final List<QuestState> candidates = new ArrayList<>();
		if (checkPartyMemberConditions(qs, condition, target) && (playerChance > 0))
		{
			for (int i = 0; i < playerChance; i++)
			{
				candidates.add(qs);
			}
		}
		
		for (L2PcInstance member : player.getParty().getMembers())
		{
			if (member == player)
			{
				continue;
			}
			
			qs = member.getQuestState(getName());
			if (checkPartyMemberConditions(qs, condition, target))
			{
				candidates.add(qs);
			}
		}
		
		if (candidates.isEmpty())
		{
			return null;
		}
		
		qs = candidates.get(getRandom(candidates.size()));
		if (!checkDistanceToTarget(qs.getPlayer(), target))
		{
			return null;
		}
		return qs;
	}
	
	private boolean checkPartyMemberConditions(QuestState qs, int condition, L2Npc npc)
	{
		return ((qs != null) && ((condition == -1) ? qs.isStarted() : qs.isCond(condition)) && checkPartyMember(qs, npc));
	}
	
	private static boolean checkDistanceToTarget(L2PcInstance player, L2Npc target)
	{
		return ((target == null) || com.l2jmobius.gameserver.util.Util.checkIfInRange(1500, player, target, true));
	}
	
	/**
	 * This method is called for every party member in {@link #getRandomPartyMemberState(L2PcInstance, int, int, L2Npc)} if/after all the standard checks are passed.<br>
	 * It is intended to be overriden by the specific quest implementations.<br>
	 * It can be used in cases when there are more checks performed than simply a quest condition check,<br>
	 * for example, if an item is required in the player's inventory.
	 * @param qs the {@link QuestState} object of the party member
	 * @param npc the NPC that was passed as the last parameter to {@link #getRandomPartyMemberState(L2PcInstance, int, int, L2Npc)}
	 * @return {@code true} if this party member passes the check, {@code false} otherwise
	 */
	public boolean checkPartyMember(QuestState qs, L2Npc npc)
	{
		return true;
	}
	
	/**
	 * Send an HTML file to the specified player.
	 * @param player the player to send the HTML to
	 * @param filename the name of the HTML file to show
	 * @return the contents of the HTML file that was sent to the player
	 * @see #showHtmlFile(L2PcInstance, String, L2Npc)
	 */
	public String showHtmlFile(L2PcInstance player, String filename)
	{
		return showHtmlFile(player, filename, null);
	}
	
	/**
	 * Send an HTML file to the specified player.
	 * @param player the player to send the HTML file to
	 * @param filename the name of the HTML file to show
	 * @param npc the NPC that is showing the HTML file
	 * @return the contents of the HTML file that was sent to the player
	 * @see #showHtmlFile(L2PcInstance, String, L2Npc)
	 */
	public String showHtmlFile(L2PcInstance player, String filename, L2Npc npc)
	{
		final boolean questwindow = !filename.endsWith(".html");
		final int questId = getId();
		
		// Create handler to file linked to the quest
		String content = getHtm(player.getHtmlPrefix(), filename);
		
		// Send message to client if message not empty
		if (content != null)
		{
			if (npc != null)
			{
				content = content.replaceAll("%objectId%", String.valueOf(npc.getObjectId()));
			}
			
			if (questwindow && (questId > 0) && (questId < 20000) && (questId != 999))
			{
				final NpcQuestHtmlMessage npcReply = new NpcQuestHtmlMessage(npc != null ? npc.getObjectId() : 0, questId);
				npcReply.setHtml(content);
				npcReply.replace("%playername%", player.getName());
				player.sendPacket(npcReply);
			}
			else
			{
				final NpcHtmlMessage npcReply = new NpcHtmlMessage(npc != null ? npc.getObjectId() : 0, content);
				npcReply.replace("%playername%", player.getName());
				player.sendPacket(npcReply);
			}
			player.sendPacket(ActionFailed.STATIC_PACKET);
			
			if (player.isGM() && player.isDebug())
			{
				player.sendMessage("HTML: " + (filename.startsWith("data/") ? filename : "data/scripts/" + getPath().toLowerCase() + "/" + getName() + "/" + filename));
			}
		}
		
		return content;
	}
	
	/**
	 * @param prefix player's language prefix.
	 * @param fileName the html file to be get.
	 * @return the HTML file contents
	 */
	public String getHtm(String prefix, String fileName)
	{
		final HtmCache hc = HtmCache.getInstance();
		String content = hc.getHtm(prefix, fileName.startsWith("data/") ? fileName : "data/scripts/" + getPath().toLowerCase() + "/" + fileName);
		if (content == null)
		{
			content = hc.getHtm(prefix, "data/scripts/" + getPath() + "/" + fileName);
			if (content == null)
			{
				content = hc.getHtmForce(prefix, "data/scripts/quests/" + getName() + "/" + fileName);
			}
		}
		return content;
	}
	
	/**
	 * @return the registered quest items IDs.
	 */
	public int[] getRegisteredItemIds()
	{
		return _questItemIds;
	}
	
	/**
	 * Registers all items that have to be destroyed in case player abort the quest or finish it.
	 * @param items
	 */
	public void registerQuestItems(int... items)
	{
		_questItemIds = items;
	}
	
	/**
	 * Remove all quest items associated with this quest from the specified player's inventory.
	 * @param player the player whose quest items to remove
	 */
	public void removeRegisteredQuestItems(L2PcInstance player)
	{
		takeItems(player, -1, _questItemIds);
	}
	
	@Override
	public String getScriptName()
	{
		return getName();
	}
	
	@Override
	public Path getScriptPath()
	{
		return ScriptEngineManager.getInstance().getCurrentLoadingScript();
	}
	
	@Override
	public void setActive(boolean status)
	{
		// TODO: Implement me.
	}
	
	@Override
	public boolean reload()
	{
		unload();
		return super.reload();
	}
	
	@Override
	public boolean unload()
	{
		return unload(true);
	}
	
	/**
	 * @param removeFromList
	 * @return
	 */
	public boolean unload(boolean removeFromList)
	{
		onSave();
		// cancel all pending timers before reloading.
		// if timers ought to be restarted, the quest can take care of it
		// with its code (example: save global data indicating what timer must be restarted).
		if (_questTimers != null)
		{
			for (List<QuestTimer> timers : getQuestTimers().values())
			{
				_readLock.lock();
				try
				{
					for (QuestTimer timer : timers)
					{
						timer.cancel();
					}
				}
				finally
				{
					_readLock.unlock();
				}
				timers.clear();
			}
			getQuestTimers().clear();
		}
		
		if (removeFromList)
		{
			return QuestManager.getInstance().removeScript(this) && super.unload();
		}
		return super.unload();
	}
	
	public void setOnEnterWorld(boolean state)
	{
		if (state)
		{
			setPlayerLoginId(event -> notifyEnterWorld(event.getActiveChar()));
		}
		else
		{
			getListeners().stream().filter(listener -> listener.getType() == EventType.ON_PLAYER_LOGIN).forEach(AbstractEventListener::unregisterMe);
		}
	}
	
	/**
	 * If a quest is set as custom, it will display it's name in the NPC Quest List.<br>
	 * Retail quests are unhardcoded to display the name using a client string.
	 * @param val if {@code true} the quest script will be set as custom quest.
	 */
	public void setIsCustom(boolean val)
	{
		_isCustom = val;
	}
	
	/**
	 * Verifies if this is a custom quest.
	 * @return {@code true} if the quest script is a custom quest, {@code false} otherwise.
	 */
	public boolean isCustomQuest()
	{
		return _isCustom;
	}
	
	public Set<NpcLogListHolder> getNpcLogList(L2PcInstance activeChar)
	{
		return Collections.emptySet();
	}
	
	public <T> boolean isTarget(int[] ids, L2Object target, Class<T> clazz)
	{
		if ((target != null) && clazz.isInstance(target))
		{
			return CommonUtil.contains(ids, target.getId());
		}
		return false;
	}
	
	public void sendNpcLogList(L2PcInstance activeChar)
	{
		final QuestState qs = activeChar.getQuestState(getName());
		
		if (qs != null)
		{
			final ExQuestNpcLogList packet = new ExQuestNpcLogList(getId());
			getNpcLogList(activeChar).forEach(packet::add);
			activeChar.sendPacket(packet);
		}
	}
	
	/**
	 * Gets the start conditions.
	 * @return the start conditions
	 */
	private Set<QuestCondition> getStartConditions()
	{
		if (_startCondition == null)
		{
			synchronized (this)
			{
				if (_startCondition == null)
				{
					_startCondition = ConcurrentHashMap.newKeySet(1);
				}
			}
		}
		return _startCondition;
	}
	
	/**
	 * Verifies if the player meets all the start conditions.
	 * @param player the player
	 * @return {@code true} if all conditions are met
	 */
	public boolean canStartQuest(L2PcInstance player)
	{
		if (_startCondition == null)
		{
			return true;
		}
		
		for (QuestCondition cond : _startCondition)
		{
			if (!cond.test(player))
			{
				return false;
			}
		}
		return true;
	}
	
	/**
	 * Gets the HTML for the first starting condition not met.
	 * @param player the player
	 * @param npc
	 * @return the HTML
	 */
	public String getStartConditionHtml(L2PcInstance player, L2Npc npc)
	{
		final QuestState st = getQuestState(player, false);
		if ((_startCondition == null) || ((st != null) && !st.isCreated()))
		{
			return null;
		}
		
		for (QuestCondition cond : _startCondition)
		{
			if (!cond.test(player))
			{
				return cond.getHtml(npc);
			}
		}
		return null;
	}
	
	/**
	 * Adds a predicate to the start conditions.
	 * @param questStartRequirement the predicate condition
	 * @param html the HTML to display if that condition is not met
	 */
	public void addCondStart(Predicate<L2PcInstance> questStartRequirement, String html)
	{
		getStartConditions().add(new QuestCondition(questStartRequirement, html));
	}
	
	/**
	 * Adds a predicate to the start conditions.
	 * @param questStartRequirement the predicate condition
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondStart(Predicate<L2PcInstance> questStartRequirement, KeyValuePair<Integer, String>... pairs)
	{
		getStartConditions().add(new QuestCondition(questStartRequirement, pairs));
	}
	
	/**
	 * Adds a minimum/maximum level start condition to the quest.
	 * @param minLevel the minimum player's level to start the quest
	 * @param maxLevel the maximum player's level to start the quest
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondLevel(int minLevel, int maxLevel, String html)
	{
		addCondStart(p -> (p.getLevel() >= minLevel) && (p.getLevel() <= maxLevel), html);
	}
	
	/**
	 * Adds a minimum/maximum level start condition to the quest.
	 * @param minLevel the minimum player's level to start the quest
	 * @param maxLevel the maximum player's level to start the quest
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondMinLevel(int minLevel, int maxLevel, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> (p.getLevel() >= minLevel) && (p.getLevel() <= maxLevel), pairs);
	}
	
	/**
	 * Adds a minimum level start condition to the quest.
	 * @param minLevel the minimum player's level to start the quest
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondMinLevel(int minLevel, String html)
	{
		addCondStart(p -> p.getLevel() >= minLevel, html);
	}
	
	/**
	 * Adds a minimum level start condition to the quest.
	 * @param minLevel the minimum player's level to start the quest
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondMinLevel(int minLevel, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.getLevel() >= minLevel, pairs);
	}
	
	/**
	 * Adds a minimum/maximum level start condition to the quest.
	 * @param maxLevel the maximum player's level to start the quest
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondMaxLevel(int maxLevel, String html)
	{
		addCondStart(p -> p.getLevel() <= maxLevel, html);
	}
	
	/**
	 * Adds a minimum/maximum level start condition to the quest.
	 * @param maxLevel the maximum player's level to start the quest
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondMaxLevel(int maxLevel, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.getLevel() <= maxLevel, pairs);
	}
	
	/**
	 * Adds a race start condition to the quest.
	 * @param race the race
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondRace(Race race, String html)
	{
		addCondStart(p -> p.getRace() == race, html);
	}
	
	/**
	 * Adds a race start condition to the quest.
	 * @param race the race
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondRace(Race race, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.getRace() == race, pairs);
	}
	
	/**
	 * Adds a not-race start condition to the quest.
	 * @param race the race
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondNotRace(Race race, String html)
	{
		addCondStart(p -> p.getRace() != race, html);
	}
	
	/**
	 * Adds a not-race start condition to the quest.
	 * @param race the race
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondNotRace(Race race, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.getRace() != race, pairs);
	}
	
	/**
	 * Adds a quest completed start condition to the quest.
	 * @param name the quest name
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondCompletedQuest(String name, String html)
	{
		addCondStart(p -> p.hasQuestState(name) && p.getQuestState(name).isCompleted(), html);
	}
	
	/**
	 * Adds a quest completed start condition to the quest.
	 * @param name the quest name
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondCompletedQuest(String name, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.hasQuestState(name) && p.getQuestState(name).isCompleted(), pairs);
	}
	
	/**
	 * Adds a quest started start condition to the quest.
	 * @param name the quest name
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondStartedQuest(String name, String html)
	{
		addCondStart(p -> p.hasQuestState(name) && p.getQuestState(name).isStarted(), html);
	}
	
	/**
	 * Adds a quest started start condition to the quest.
	 * @param name the quest name
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondStartedQuest(String name, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.hasQuestState(name) && p.getQuestState(name).isStarted(), pairs);
	}
	
	/**
	 * Adds a class ID start condition to the quest.
	 * @param classId the class ID
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondClassId(ClassId classId, String html)
	{
		addCondStart(p -> p.getClassId() == classId, html);
	}
	
	/**
	 * Adds a class ID start condition to the quest.
	 * @param classId the class ID
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondClassId(ClassId classId, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.getClassId() == classId, pairs);
	}
	
	/**
	 * Adds a not-class ID start condition to the quest.
	 * @param classId the class ID
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondNotClassId(ClassId classId, String html)
	{
		addCondStart(p -> p.getClassId() != classId, html);
	}
	
	/**
	 * Adds a not-class ID start condition to the quest.
	 * @param classId the class ID
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondNotClassId(ClassId classId, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.getClassId() != classId, pairs);
	}
	
	/**
	 * Adds a subclass active start condition to the quest.
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondIsSubClassActive(String html)
	{
		addCondStart(p -> p.isSubClassActive(), html);
	}
	
	/**
	 * Adds a subclass active start condition to the quest.
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondIsSubClassActive(KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.isSubClassActive(), pairs);
	}
	
	/**
	 * Adds a not-subclass active start condition to the quest.
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondIsNotSubClassActive(String html)
	{
		addCondStart(p -> !p.isSubClassActive() && !p.isDualClassActive(), html);
	}
	
	/**
	 * Adds a not-subclass active start condition to the quest.
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondIsNotSubClassActive(KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> !p.isSubClassActive() && !p.isDualClassActive(), pairs);
	}
	
	/**
	 * Adds a category start condition to the quest.
	 * @param categoryType the category type
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondInCategory(CategoryType categoryType, String html)
	{
		addCondStart(p -> p.isInCategory(categoryType), html);
	}
	
	/**
	 * Adds a category start condition to the quest.
	 * @param categoryType the category type
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondInCategory(CategoryType categoryType, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> p.isInCategory(categoryType), pairs);
	}
	
	/**
	 * Adds a clan level start condition to the quest.
	 * @param clanLevel the clan level
	 * @param html the HTML to display if the condition is not met
	 */
	public void addCondClanLevel(int clanLevel, String html)
	{
		addCondStart(p -> (p.getClan() != null) && (p.getClan().getLevel() > clanLevel), html);
	}
	
	/**
	 * Adds a category start condition to the quest.
	 * @param clanLevel the clan level
	 * @param pairs the HTML to display if the condition is not met per each npc
	 */
	@SafeVarargs
	public final void addCondClanLevel(int clanLevel, KeyValuePair<Integer, String>... pairs)
	{
		addCondStart(p -> (p.getClan() != null) && (p.getClan().getLevel() > clanLevel), pairs);
	}
	
	public void onQuestAborted(L2PcInstance player)
	{
		
	}
	
	public void giveStoryQuestReward(L2PcInstance player, int steelDoorCoinCount)
	{
		giveItems(player, STEEL_DOOR_COIN, steelDoorCoinCount);
		STORY_QUEST_REWARD.getSkill().applyEffects(player, player);
	}
}