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

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+/*
+    This file is part of the HeavenMS MapleStory Server
+    Copyleft (L) 2016 - 2019 RonanLana
+
+    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 client.MapleClient;
+import net.AbstractMaplePacketHandler;
+import tools.data.input.SeekableLittleEndianAccessor;
+import tools.MaplePacketCreator;
+import tools.Pair;
+
+import java.util.Comparator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.PriorityQueue;
+
+import constants.game.GameConstants;
+
+/**
+ * @author Ronan
+ */
+public final class UseOwlOfMinervaHandler extends AbstractMaplePacketHandler {
+
+    @Override
+    public final void handlePacket(SeekableLittleEndianAccessor slea, MapleClient c) {
+        List<Pair<Integer, Integer>> owlSearched = c.getWorldServer().getOwlSearchedItems();
+        List<Integer> owlLeaderboards;
+        
+        if(owlSearched.size() < 5) {
+            owlLeaderboards = new LinkedList<>();
+            for(int i : GameConstants.OWL_DATA) {
+                owlLeaderboards.add(i);
+            }
+        } else {
+            Comparator<Pair<Integer, Integer>> comparator = new Comparator<Pair<Integer, Integer>>() {  // descending order
+                @Override
+                public int compare(Pair<Integer, Integer> p1, Pair<Integer, Integer> p2) {
+                    return p2.getRight().compareTo(p1.getRight());
+                }
+            };
+            
+            PriorityQueue<Pair<Integer, Integer>> queue = new PriorityQueue<>(Math.max(1, owlSearched.size()), comparator);
+            for(Pair<Integer, Integer> p : owlSearched) {
+                queue.add(p);
+            }
+            
+            owlLeaderboards = new LinkedList<>();
+            for(int i = 0; i < Math.min(owlSearched.size(), 10); i++) {
+                owlLeaderboards.add(queue.remove().getLeft());
+            }
+        }
+        
+        c.announce(MaplePacketCreator.getOwlOpen(owlLeaderboards));
+    }
+}