Hired Merchant & Player shop fixes + Owl of Minerva

Thanks to BenjixD DietStory's dev team, many bugs found by them have
been patched (pirate quests, missing drop data, fly command, etc).
Implemented Owl of Minerva. Fixed many issues with Hired Merchant and
Player Shops. Fixed an error with the slot checking system. Added Wish
Tickets (circa-2006 GMS event) to be dropped on AmoriaPQ.

src/constants/GameConstants.java

@@ -2,11 +2,17 @@ package constants;
 
 import client.MapleJob;
 import constants.skills.Aran;
+import server.maps.MapleMap;
+import server.maps.FieldLimit;
 
 /*
  * @author kevintjuh93
+ * @author Ronan
  */
 public class GameConstants {
+    //public static final int[] OWL_DATA = {2000014, 2000015, 2000016};
+    public static final int[] OWL_DATA = new int[]{1082002, 2070005, 2070006, 1022047, 1102041, 2044705, 2340000, 2040017, 1092030, 2040804};
+    
     // Ronan's rates upgrade system
     private static final int[] DROP_RATE_GAIN = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
     private static final int[] MESO_RATE_GAIN = {1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105};
@@ -137,6 +143,23 @@ public class GameConstants {
     	return skill >= 9001000 && skill <= 9101008 || skill >= 8001000 && skill <= 8001001; 
     }
     
+    public static boolean isFreeMarketRoom(int mapid) {
+        return mapid > 910000000 && mapid < 910000023;
+    }
+    
+    public static boolean isMerchantLocked(MapleMap map) {
+        if(FieldLimit.CANNOTMIGRATE.check(map.getFieldLimit())) {   // maps that cannot access cash shop cannot access merchants too (except FM rooms).
+            return true;
+        }
+        
+        switch(map.getId()) {
+            case 910000000:
+                return true;
+        }
+        
+        return false;
+    }
+    
     public static boolean isBossRush(int mapid) {
         return mapid >= 970030100 && mapid <= 970042711;
     }