content: /*
  	This file is part of the OdinMS Maple Story Server
      Copyright (C) 2008 Patrick Huy <patrick.huy@frz.cc>
  		       Matthias Butz <matze@odinms.de>
  		       Jan Christian Meyer <vimes@odinms.de>
  
      This program is free software: you can redistribute it and/or modify
      it under the terms of the GNU Affero General Public License as
      published by the Free Software Foundation version 3 as published by
      the Free Software Foundation. You may not use, modify or distribute
      this program under any other version of the GNU Affero General Public
      License.
  
      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 Affero General Public License for more details.
  
      You should have received a copy of the GNU Affero General Public License
      along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
  package net.server.channel.handlers;
  
  import java.awt.Point;
  import client.MapleCharacter;
  import client.MapleClient;
  import net.AbstractMaplePacketHandler;
  import scripting.quest.QuestScriptManager;
  import server.quest.MapleQuest;
  import server.life.MapleNPC;
  import tools.data.input.SeekableLittleEndianAccessor;
  
  /**
   *
   * @author Matze
   */
  public final class QuestActionHandler extends AbstractMaplePacketHandler {
      
      // isNpcNearby thanks to GabrielSin
      private static boolean isNpcNearby(SeekableLittleEndianAccessor slea, MapleCharacter player, MapleQuest quest, int npcId) {
          Point playerP;
          Point pos = player.getPosition();
          
          if(slea.available() >= 4) {
              playerP = new Point(slea.readShort(), slea.readShort());
              if (playerP.distance(pos) > 1000) {     // thanks Darter (YungMoozi) for reporting unchecked player position
                  playerP = pos;
              }
          } else {
              playerP = pos;
          }
          
          if (!quest.isAutoStart() && !quest.isAutoComplete()) {
              MapleNPC npc = player.getMap().getNPCById(npcId);
              if(npc == null) {
                  return false;
              }
              
              Point npcP = npc.getPosition();
              if (Math.abs(npcP.getX() - playerP.getX()) > 1200 || Math.abs(npcP.getY() - playerP.getY()) > 800) {
                  player.dropMessage(5, "Approach the NPC to fulfill this quest operation.");
                  return false;
              }
          }
          
          return true;
      }
      
      @Override
      public final void handlePacket(SeekableLittleEndianAccessor slea, MapleClient c) {
          byte action = slea.readByte();
          short questid = slea.readShort();
          MapleCharacter player = c.getPlayer();
          MapleQuest quest = MapleQuest.getInstance(questid);
          
          if (action == 0) { // Restore lost item, Credits Darter ( Rajan )
              slea.readInt();
              int itemid = slea.readInt();
              quest.restoreLostItem(player, itemid);
          } else if (action == 1) { //Start Quest
              int npc = slea.readInt();
              if(!isNpcNearby(slea, player, quest, npc)) {
                  return;
              }
              
              if(quest.canStart(player, npc)) {
                  quest.start(player, npc);
              }
          } else if (action == 2) { // Complete Quest
              int npc = slea.readInt();
              if(!isNpcNearby(slea, player, quest, npc)) {
                  return;
              }
              
              if(quest.canComplete(player, npc)) {
                  if (slea.available() >= 2) {
                      int selection = slea.readShort();
                      quest.complete(player, npc, selection);
                  } else {
                      quest.complete(player, npc);
                  }
              }
          } else if (action == 3) {// forfeit quest
              quest.forfeit(player);
          } else if (action == 4) { // scripted start quest
              int npc = slea.readInt();
              if(!isNpcNearby(slea, player, quest, npc)) {
                  return;
              }
              
              if(quest.canStart(player, npc)) {
                  QuestScriptManager.getInstance().start(c, questid, npc);
              }
          } else if (action == 5) { // scripted end quests
              int npc = slea.readInt();
              if(!isNpcNearby(slea, player, quest, npc)) {
                  return;
              }
              
              if(quest.canComplete(player, npc)) {
                  QuestScriptManager.getInstance().end(c, questid, npc);
              }
          }
      }
  }
  