Horntail PQ & Exped + Equip levelup fix

Added Horntail PQ and boss fight. Fixed short integer overflow of
equipment stats on client messing up player stats.

scripts/npc/2081005.js

@@ -19,12 +19,25 @@
     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/>.
 */
-//Fixed by Moogra
+//Fixed by Moogra, Ronan
 //Fixed grammar, javascript syntax
+
+importPackage(Packages.client);
+
 var status = 0;
 var price = 100000;
 
+function isTransformed(ch) {
+        return ch.getBuffSource(MapleBuffStat.MORPH) == 2210003;
+}
+
 function start() {
+    if(!(isTransformed(cm.getPlayer()) || cm.haveItem(4001086))) {
+        cm.sendOk("This is the cave of the mighty Horntail, supreme ruler of the Leafre Canyons, outsiders are not welcome. Get lost!");
+        cm.dispose();
+        return;
+    }
+    
     cm.sendSimple("Welcome to Cave of Life - Entrance ! Would you like to go inside and fight #rHorntail#k ? If you want to fight him, you may might need some #b#v2000005##k, so you can recover some HP if you have been hit by #rHorntail#k.\r\n#L1#I would like to buy 10 for 100,000 Mesos!#l\r\n\#L2#No thanks, let me in now!#l");
 }
 
@@ -32,12 +45,17 @@ function action(mode, type, selection) {
     if (mode < 1)
         cm.dispose();
     else if (selection == 1) {
-        if(cm.getMeso() >= price && cm.canHold(2000005)) {
-            cm.gainMeso(-price);
-            cm.gainItem(2000005, 10);
-            cm.sendOk("Thank you for buying the potion. Use it as well!");
-        } else
+        if(cm.getMeso() >= price) {
+            if(!cm.canHold(2000005)) {
+                cm.sendOk("Sorry, you don't have a slot on your inventory for the item!");
+            } else {
+                cm.gainMeso(-price);
+                cm.gainItem(2000005, 10);
+                cm.sendOk("Thank you for buying the potion. Use it as well!");
+            }
+        } else {
             cm.sendOk("Sorry, you don't have enough mesos to buy them!");
+        }
         cm.dispose();
     } else if (selection == 2) {
         if (cm.getLevel() > 99)