l2j-server-game/L2_GameServer/java/com/l2jserver/gameserver/instancemanager/MercTicketManager.java

/*
 * 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.l2jserver.gameserver.instancemanager;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.List;
import java.util.logging.Logger;

import com.l2jserver.L2DatabaseFactory;
import com.l2jserver.gameserver.ThreadPoolManager;
import com.l2jserver.gameserver.datatables.NpcTable;
import com.l2jserver.gameserver.idfactory.IdFactory;
import com.l2jserver.gameserver.model.AutoChatHandler;
import com.l2jserver.gameserver.model.L2ItemInstance;
import com.l2jserver.gameserver.model.L2World;
import com.l2jserver.gameserver.model.actor.instance.L2PcInstance;
import com.l2jserver.gameserver.model.actor.instance.L2DefenderInstance;
import com.l2jserver.gameserver.model.entity.Castle;
import com.l2jserver.gameserver.templates.chars.L2NpcTemplate;

import javolution.util.FastList;

/**
 * @author yellowperil & Fulminus
 * This class is similar to the SiegeGuardManager, except it handles
 * the loading of the mercenary tickets that are dropped on castle floors
 * by the castle lords.
 * These tickets (aka badges) need to be readded after each server reboot
 * except when the server crashed in the middle of an ongoig siege.
 * In addition, this class keeps track of the added tickets, in order to
 * properly limit the number of mercenaries in each castle and the
 * number of mercenaries from each mercenary type.
 * Finally, we provide auxilary functions to identify the castle in
 * which each item (and its corresponding NPC) belong to, in order to
 * help avoid mixing them up.
 *
 */
public class MercTicketManager
{
	protected static final Logger _log = Logger.getLogger(MercTicketManager.class.getName());
	
	public static final MercTicketManager getInstance()
	{
		return SingletonHolder._instance;
	}
	// =========================================================
	
	// =========================================================
	// Data Field
	private List<L2ItemInstance> _droppedTickets; // to keep track of items on the ground
	
	//TODO move all these values into siege.properties
	// max tickets per merc type = 10 + (castleid * 2)?
	// max ticker per castle = 40 + (castleid * 20)?
	private static final int[] MAX_MERC_PER_TYPE = {
			10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, // Gludio
			15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, // Dion
			10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, // Giran
			10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, // Oren
			20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // Aden
			20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // Innadril
			20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // Goddard
			20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, // Rune
			20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 // Schuttgart
	};
	
	//TODO: not retail like: clan lvl 5 - 30 ticks max, lvl 7+ - 50 max
	private static final int[] MERCS_MAX_PER_CASTLE = {
			100, // Gludio
			150, // Dion
			200, // Giran
			300, // Oren
			400, // Aden
			400, // Innadril
			400, // Goddard
			400, // Rune
			400 // Schuttgart
	};
	
	private static final int[] ITEM_IDS = {
			3960, 3961, 3962, 3963, 3964, 3965, 3966, 3967, 3968, 3969, 6115, 6116, 6117, 6118, 6119, 6120, 6121, 6122, 6123, 6124, 6038, 6039, 6040, 6041, 6042, 6043, 6044, 6045, 6046, 6047, 6175, 6176, 6177, 6178, 6179, 6180, 6181, 6182, 6183, 6184, 6235, 6236, 6237, 6238, 6239, 6240, 6241, 6242, 6243, 6244, 6295, 6296,	// Gludio
			3973, 3974, 3975, 3976, 3977, 3978, 3979, 3980, 3981, 3982, 6125, 6126, 6127, 6128, 6129, 6130, 6131, 6132, 6133, 6134, 6051, 6052, 6053, 6054, 6055, 6056, 6057, 6058, 6059, 6060, 6185, 6186, 6187, 6188, 6189, 6190, 6191, 6192, 6193, 6194, 6245, 6246, 6247, 6248, 6249, 6250, 6251, 6252, 6253, 6254, 6297, 6298,	// Dion
			3986, 3987, 3988, 3989, 3990, 3991, 3992, 3993, 3994, 3995, 6135, 6136, 6137, 6138, 6139, 6140, 6141, 6142, 6143, 6144, 6064, 6065, 6066, 6067, 6068, 6069, 6070, 6071, 6072, 6073, 6195, 6196, 6197, 6198, 6199, 6200, 6201, 6202, 6203, 6204, 6255, 6256, 6257, 6258, 6259, 6260, 6261, 6262, 6263, 6264, 6299, 6300,	// Giran
			3999, 4000, 4001, 4002, 4003, 4004, 4005, 4006, 4007, 4008, 6145, 6146, 6147, 6148, 6149, 6150, 6151, 6152, 6153, 6154, 6077, 6078, 6079, 6080, 6081, 6082, 6083, 6084, 6085, 6086, 6205, 6206, 6207, 6208, 6209, 6210, 6211, 6212, 6213, 6214, 6265, 6266, 6267, 6268, 6269, 6270, 6271, 6272, 6273, 6274, 6301, 6302,	// Oren
			4012, 4013, 4014, 4015, 4016, 4017, 4018, 4019, 4020, 4021, 6155, 6156, 6157, 6158, 6159, 6160, 6161, 6162, 6163, 6164, 6090, 6091, 6092, 6093, 6094, 6095, 6096, 6097, 6098, 6099, 6215, 6216, 6217, 6218, 6219, 6220, 6221, 6222, 6223, 6224, 6275, 6276, 6277, 6278, 6279, 6280, 6281, 6282, 6283, 6284, 6303, 6304,	// Aden
			5205, 5206, 5207, 5208, 5209, 5210, 5211, 5212, 5213, 5214, 6165, 6166, 6167, 6168, 6169, 6170, 6171, 6172, 6173, 6174, 6105, 6106, 6107, 6108, 6109, 6110, 6111, 6112, 6113, 6114, 6225, 6226, 6227, 6228, 6229, 6230, 6231, 6232, 6233, 6234, 6285, 6286, 6287, 6288, 6289, 6290, 6291, 6292, 6293, 6294, 6305, 6306,	// Innadril
			6779, 6780, 6781, 6782, 6783, 6784, 6785, 6786, 6787, 6788, 6802, 6803, 6804, 6805, 6806, 6807, 6808, 6809, 6810, 6811, 6792, 6793, 6794, 6795, 6796, 6797, 6798, 6799, 6800, 6801, 6812, 6813, 6814, 6815, 6816, 6817, 6818, 6819, 6820, 6821, 6822, 6823, 6824, 6825, 6826, 6827, 6828, 6829, 6830, 6831, 6832, 6833,	// Goddard
			7973, 7974, 7975, 7976, 7977, 7978, 7979, 7980, 7981, 7982, 7998, 7999, 8000, 8001, 8002, 8003, 8004, 8005, 8006, 8007, 7988, 7989, 7990, 7991, 7992, 7993, 7994, 7995, 7996, 7997, 8008, 8009, 8010, 8011, 8012, 8013, 8014, 8015, 8016, 8017, 8018, 8019, 8020, 8021, 8022, 8023, 8024, 8025, 8026, 8027, 8028, 8029,	// Rune
			7918, 7919, 7920, 7921, 7922, 7923, 7924, 7925, 7926, 7927, 7941, 7942, 7943, 7944, 7945, 7946, 7947, 7948, 7949, 7950, 7931, 7932, 7933, 7934, 7935, 7936, 7937, 7938, 7939, 7940, 7951, 7952, 7953, 7954, 7955, 7956, 7957, 7958, 7959, 7960, 7961, 7962, 7963, 7964, 7965, 7966, 7967, 7968, 7969, 7970, 7971, 7972	// Schuttgart
	};
	
	private static final int[] NPC_IDS = {35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Gludio
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Dion
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Giran
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Oren
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Aden
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Innadril
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Goddard
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Rune
			35010, 35011, 35012, 35013, 35014, 35015, 35016, 35017, 35018, 35019, 35020, 35021, 35022, 35023, 35024, 35025, 35026, 35027, 35028, 35029, 35030,35031,35032,35033,35034,35035,35036,35037,35038,35039, 35040, 35041, 35042, 35043, 35044, 35045, 35046, 35047, 35048, 35049, 35050, 35051, 35052, 35053, 35054, 35055, 35056, 35057, 35058, 35059, 35060, 35061, // Schuttgart
	};
	
	private static final int GUARDIAN_TYPES_COUNT = 52;
	
	// =========================================================
	// Constructor
	private MercTicketManager()
	{
		_log.info("Initializing MercTicketManager");
		load();
	}
	
	// =========================================================
	// Method - Public
	// returns the castleId for the passed ticket item id
	public int getTicketCastleId(int itemId)
	{
		for (int i = 0; i < 9; i++) //CastleID`s from 1 to 9 minus;
		{
			for (int i2 = 0; i2 < 50; i2 += 10)
				//Simplified if statement;
				if ((itemId >= ITEM_IDS[i2 + i * GUARDIAN_TYPES_COUNT] && itemId <= ITEM_IDS[i2 + 9 + i * GUARDIAN_TYPES_COUNT]))
					return i + 1;
			if (itemId >= ITEM_IDS[50] && itemId <= ITEM_IDS[51])
				return i + 1;
		}
		return -1;
	}
	
	public void reload()
	{
		getDroppedTickets().clear();
		load();
	}
	
	// =========================================================
	// Method - Private
	private final void load()
	{
		Connection con = null;
		// load merc tickets into the world
		try
		{
			PreparedStatement statement;
			ResultSet rs;
			
			con = L2DatabaseFactory.getInstance().getConnection();
			statement = con.prepareStatement("SELECT * FROM castle_siege_guards Where isHired = 1");
			rs = statement.executeQuery();
			
			int npcId;
			int itemId;
			int x, y, z;
			int mercPlaced[] = new int[20];
			// start index to begin the search for the itemId corresponding to this NPC
			// this will help with:
			//	a) skip unnecessary iterations in the search loop
			//	b) avoid finding the wrong itemId whenever tickets of different spawn the same npc!
			int startindex = 0;
			
			while (rs.next())
			{
				npcId = rs.getInt("npcId");
				x = rs.getInt("x");
				y = rs.getInt("y");
				z = rs.getInt("z");
				Castle castle = CastleManager.getInstance().getCastle(x, y, z);
				if (castle != null)
				{
					if (mercPlaced[castle.getCastleId() - 1] >= MERCS_MAX_PER_CASTLE[castle.getCastleId() - 1])
						continue;
					startindex = GUARDIAN_TYPES_COUNT * (castle.getCastleId() - 1);
					mercPlaced[castle.getCastleId() - 1] += 1;
				}
				
				// find the FIRST ticket itemId with spawns the saved NPC in the saved location
				for (int i = startindex; i < startindex + GUARDIAN_TYPES_COUNT; i++)
					if (NPC_IDS[i] == npcId) // Find the index of the item used
					{
						// only handle tickets if a siege is not ongoing in this npc's castle
						
						if ((castle != null) && !(castle.getSiege().getIsInProgress()))
						{
							itemId = ITEM_IDS[i];
							// create the ticket in the gameworld
							L2ItemInstance dropticket = new L2ItemInstance(IdFactory.getInstance().getNextId(), itemId);
							dropticket.setLocation(L2ItemInstance.ItemLocation.VOID);
							dropticket.dropMe(null, x, y, z);
							dropticket.setDropTime(0); //avoids it from beeing removed by the auto item destroyer
							L2World.getInstance().storeObject(dropticket);
							getDroppedTickets().add(dropticket);
						}
						break;
					}
			}
			statement.close();
			
			_log.info("Loaded: " + getDroppedTickets().size() + " Mercenary Tickets");
		}
		catch (Exception e)
		{
			_log.warning("Exception: loadMercenaryData(): " + e.getMessage());
			e.printStackTrace();
		}
		finally
		{
			try
			{
				con.close();
			}
			catch (Exception e)
			{
			}
		}
	}
	
	// =========================================================
	// Property - Public
	/**
	 * Checks if the passed item has reached the limit of number of dropped
	 * tickets that this SPECIFIC item may have in its castle
	 */
	public boolean isAtTypeLimit(int itemId)
	{
		int limit = -1;
		// find the max value for this item
		for (int i = 0; i < ITEM_IDS.length; i++)
			if (ITEM_IDS[i] == itemId) // Find the index of the item used
			{
				limit = MAX_MERC_PER_TYPE[i];
				break;
			}
		
		if (limit <= 0)
			return true;
		
		int count = 0;
		for (L2ItemInstance ticket : getDroppedTickets())
		{
			if (ticket != null && ticket.getItemId() == itemId)
				count++;
		}
		if (count >= limit)
			return true;
		return false;
	}
	
	/**
	 * Checks if the passed item belongs to a castle which has reached its limit
	 * of number of dropped tickets.
	 */
	public boolean isAtCasleLimit(int itemId)
	{
		int castleId = getTicketCastleId(itemId);
		if (castleId <= 0)
			return true;
		int limit = MERCS_MAX_PER_CASTLE[castleId - 1];
		if (limit <= 0)
			return true;
		
		int count = 0;
		for (L2ItemInstance ticket : getDroppedTickets())
		{
			if ((ticket != null) && (getTicketCastleId(ticket.getItemId()) == castleId))
				count++;
		}
		if (count >= limit)
			return true;
		return false;
	}
	
	public int getMaxAllowedMerc(int castleId)
	{
		return MERCS_MAX_PER_CASTLE[castleId - 1];
	}
	
	public boolean isTooCloseToAnotherTicket(int x, int y, int z)
	{
		for (L2ItemInstance item : getDroppedTickets())
		{
			double dx = x - item.getX();
			double dy = y - item.getY();
			double dz = z - item.getZ();
			
			if ((dx * dx + dy * dy + dz * dz) < 25 * 25)
				return true;
		}
		return false;
	}
	
	/**
	 * addTicket actions
	 * 1) find the npc that needs to be saved in the mercenary spawns, given this item
	 * 2) Use the passed character's location info to add the spawn
	 * 3) create a copy of the item to drop in the world
	 * returns the id of the mercenary npc that was added to the spawn
	 * returns -1 if this fails.
	 */
	public int addTicket(int itemId, L2PcInstance activeChar, String[] messages)
	{
		int x = activeChar.getX();
		int y = activeChar.getY();
		int z = activeChar.getZ();
		int heading = activeChar.getHeading();
		
		Castle castle = CastleManager.getInstance().getCastle(activeChar);
		if (castle == null) //this should never happen at this point
			return -1;
		
		for (int i = 0; i < ITEM_IDS.length; i++)
		{
			if (ITEM_IDS[i] == itemId) // Find the index of the item used
			{
				spawnMercenary(NPC_IDS[i], x, y, z, 3000, messages, 0);
				
				// Hire merc for this caslte.  NpcId is at the same index as the item used.
				castle.getSiege().getSiegeGuardManager().hireMerc(x, y, z, heading, NPC_IDS[i]);
				
				// create the ticket in the gameworld
				L2ItemInstance dropticket = new L2ItemInstance(IdFactory.getInstance().getNextId(), itemId);
				dropticket.setLocation(L2ItemInstance.ItemLocation.VOID);
				dropticket.dropMe(null, x, y, z);
				dropticket.setDropTime(0); //avoids it from beeing removed by the auto item destroyer
				L2World.getInstance().storeObject(dropticket); //add to the world
				// and keep track of this ticket in the list
				_droppedTickets.add(dropticket);
				
				return NPC_IDS[i];
			}
		}
		return -1;
	}
	
	private void spawnMercenary(int npcId, int x, int y, int z, int despawnDelay, String[] messages, int chatDelay)
	{
		L2NpcTemplate template = NpcTable.getInstance().getTemplate(npcId);
		if (template != null)
		{
			final L2DefenderInstance npc = new L2DefenderInstance(IdFactory.getInstance().getNextId(), template);
			npc.setCurrentHpMp(npc.getMaxHp(), npc.getMaxMp());
			npc.setDecayed(false);
			npc.spawnMe(x, y, (z + 20));
			
			if (messages != null && messages.length > 0)
				AutoChatHandler.getInstance().registerChat(npc, messages, chatDelay);
			
			if (despawnDelay > 0)
			{
				ThreadPoolManager.getInstance().scheduleGeneral(new Runnable() {
					public void run()
					{
						npc.deleteMe();
					}
				}, despawnDelay);
			}
		}
	}
	
	/**
	 * Delete all tickets from a castle;
	 * remove the items from the world and remove references to them from this class
	 */
	public void deleteTickets(int castleId)
	{
		List<L2ItemInstance> toDelete = new FastList<L2ItemInstance>();
		for (L2ItemInstance item : getDroppedTickets())
		{
			if ((item != null) && (getTicketCastleId(item.getItemId()) == castleId))
			{
				item.decayMe();
				L2World.getInstance().removeObject(item);
				
				// remove from the list
				toDelete.add(item);
			}
		}
		getDroppedTickets().removeAll(toDelete);
	}
	
	/**
	 * remove a single ticket and its associated spawn from the world
	 * (used when the castle lord picks up a ticket, for example)
	 */
	public void removeTicket(L2ItemInstance item)
	{
		int itemId = item.getItemId();
		int npcId = -1;
		
		// find the FIRST ticket itemId with spawns the saved NPC in the saved location
		for (int i = 0; i < ITEM_IDS.length; i++)
			if (ITEM_IDS[i] == itemId) // Find the index of the item used
			{
				npcId = NPC_IDS[i];
				break;
			}
		// find the castle where this item is
		Castle castle = CastleManager.getInstance().getCastleById(getTicketCastleId(itemId));
		
		if (npcId > 0 && castle != null)
		{
			(new SiegeGuardManager(castle)).removeMerc(npcId, item.getX(), item.getY(), item.getZ());
		}
		
		getDroppedTickets().remove(item);
	}
	
	public int[] getItemIds()
	{
		return ITEM_IDS;
	}
	
	public final List<L2ItemInstance> getDroppedTickets()
	{
		if (_droppedTickets == null)
			synchronized (this)
			{
				if (_droppedTickets == null)
					_droppedTickets = new FastList<L2ItemInstance>();
			}
		return _droppedTickets;
	}
	
	@SuppressWarnings("synthetic-access")
	private static class SingletonHolder
	{
		protected static final MercTicketManager _instance = new MercTicketManager();
	}
}