Persistent diseases + PQ request system + GuildPQ fix

Implemented persistent diseases. Players now keep their disease status when logging out the game.
Solved several concurrent access issues in MapleMap and MapleMonster.
Implemented an option where an account's character slots can be accounted either by each world or all-server range.
Fixed some issues with character slot count when entering/exiting Cash Shop.
Fixed an exploit with Papulatus, on where players could create cracks of dimension infinitely.
Solved an issue with the "reach" command not working properly when the targeted player is on an event instance.
Devised an advanced and secure "PQ request" system. The service revolves around expecting massive number of players requesting a "pass" simultaneously, and fairly & swiftly responsing as much people as possible.
Improved overall Whisper handler performance.
Fixed GPQ Stage 1 statues not working as expected, which rendered the instance unplayable until now.
Added commands for start, complete and reset quests.

src/net/server/Server.java

@@ -100,6 +100,7 @@ public class Server {
     private final Properties subnetInfo = new Properties();
     private static Server instance = null;
     private final Map<Integer, Set<Integer>> accountChars = new HashMap<>();
+    private final Map<Integer, Short> accountCharacterCount = new HashMap<>();
     private final Map<Integer, Integer> worldChars = new HashMap<>();
     private final Map<String, Integer> transitioningChars = new HashMap<>();
     private List<Pair<Integer, String>> worldRecommendedList = new LinkedList<>();
@@ -601,9 +602,7 @@ public class Server {
             MapleClient c = processDiseaseAnnounceClients.remove(0);
             MapleCharacter player = c.getPlayer();
             if(player != null && player.isLoggedinWorld()) {
-                for(MapleCharacter chr : player.getMap().getCharacters()) {
-                    chr.announceDiseases(c);
-                }
+                player.announceDiseases();
             }
         }
         
@@ -1089,6 +1088,32 @@ public class Server {
         }
     }
     
+    public short getAccountCharacterCount(Integer accountid) {
+        lgnRLock.lock();
+        try {
+            return accountCharacterCount.get(accountid);
+        } finally {
+            lgnRLock.unlock();
+        }
+    }
+    
+    public short getAccountWorldCharacterCount(Integer accountid, Integer worldid) {
+        lgnRLock.lock();
+        try {
+            short count = 0;
+            
+            for(Integer chr : accountChars.get(accountid)) {
+                if(worldChars.get(chr).equals(worldid)) {
+                    count++;
+                }
+            }
+            
+            return count;
+        } finally {
+            lgnRLock.unlock();
+        }
+    }
+    
     private Set<Integer> getAccountCharacterEntries(Integer accountid) {
         lgnRLock.lock();
         try {
@@ -1115,6 +1140,8 @@ public class Server {
         
         lgnWLock.lock();
         try {
+            accountCharacterCount.put(accountid, (short)(accountCharacterCount.get(accountid) + 1));
+            
             Set<Integer> accChars = accountChars.get(accountid);
             accChars.add(chrid);
             
@@ -1132,6 +1159,8 @@ public class Server {
     public void deleteCharacterEntry(Integer accountid, Integer chrid) {
         lgnWLock.lock();
         try {
+            accountCharacterCount.put(accountid, (short)(accountCharacterCount.get(accountid) - 1));
+            
             Set<Integer> accChars = accountChars.get(accountid);
             accChars.remove(chrid);
             
@@ -1169,6 +1198,7 @@ public class Server {
     public void deleteAccountEntry(Integer accountid) { is this even a thing?
         lgnWLock.lock();
         try {
+            accountCharacterCount.remove(accountid);
             accountChars.remove(accountid);
         } finally {
             lgnWLock.unlock();
@@ -1190,6 +1220,7 @@ public class Server {
                 List<MapleCharacter> wchars = w.getAccountCharactersView(accountId);
                 if(wchars == null) {
                     if(!accountChars.containsKey(accountId)) {
+                        accountCharacterCount.put(accountId, (short) 0);
                         accountChars.put(accountId, new HashSet<Integer>());    // not advisable at all to write on the map on a read-protected environment
                     }                                                           // yet it's known there's no problem since no other point in the source does
                 } else if(!wchars.isEmpty()) {                                  // this action.
@@ -1206,7 +1237,8 @@ public class Server {
         return new Pair<>(new Pair<>(chrTotal, lastwchars), accChars);
     }
     
-    private static List<List<MapleCharacter>> loadAccountCharactersViewFromDb(int accId, int wlen) {
+    private static Pair<Short, List<List<MapleCharacter>>> loadAccountCharactersViewFromDb(int accId, int wlen) {
+        short characterCount = 0;
         List<List<MapleCharacter>> wchars = new ArrayList<>(wlen);
         for(int i = 0; i < wlen; i++) wchars.add(i, new LinkedList<MapleCharacter>());
         
@@ -1231,8 +1263,10 @@ public class Server {
                 ps.setInt(1, accId);
                 try (ResultSet rs = ps.executeQuery()) {
                     while (rs.next()) {
+                        characterCount++;
+                        
                         int cworld = rs.getByte("world");
-                        if(cworld >= wlen) break;
+                        if(cworld >= wlen) continue;
 
                         if(cworld > curWorld) {
                             wchars.add(curWorld, chars);
@@ -1253,7 +1287,7 @@ public class Server {
             sqle.printStackTrace();
         }
         
-        return wchars;
+        return new Pair<>(characterCount, wchars);
     }
     
     public void loadAccountCharacters(MapleClient c) {
@@ -1300,10 +1334,13 @@ public class Server {
     
     private int loadAccountCharactersView(Integer accId, int gmLevel, int fromWorldid) {    // returns the maximum gmLevel found
         List<World> wlist = this.getWorlds();
-        List<List<MapleCharacter>> accChars = loadAccountCharactersViewFromDb(accId, wlist.size());
+        Pair<Short, List<List<MapleCharacter>>> accCharacters = loadAccountCharactersViewFromDb(accId, wlist.size());
         
         lgnWLock.lock();
         try {
+            List<List<MapleCharacter>> accChars = accCharacters.getRight();
+            accountCharacterCount.put(accId, accCharacters.getLeft());
+            
             Set<Integer> chars = accountChars.get(accId);
             if(chars == null) {
                 chars = new HashSet<>(5);