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src/main/java/net/server/channel/handlers/QuestActionHandler.java

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+/*
+	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);
+            }
+        }
+    }
+}