Fixed Horntail command + minor EXP gain issue fix

Now Horntail can be spawned properly by a command. Fixed a rase case
where an extremely high value of EXP gain would cause integer overflow,
potentially crashing one's client.

src/server/life/MapleMonster.java

@@ -210,6 +210,7 @@ public class MapleMonster extends AbstractLoadedMapleLife {
         int trueDamage = Math.min(hp, damage); // since magic happens otherwise B^)
         
         if(ServerConstants.USE_DEBUG == true && from != null) from.dropMessage(5, "Hitted MOB " + this.getId());
+        dispatchMonsterDamaged(from, trueDamage);
 
         hp -= damage;
         if (takenDamage.containsKey(from.getId())) {
@@ -368,16 +369,14 @@ public class MapleMonster extends AbstractLoadedMapleLife {
                     personalExp *= (stati.get(MonsterStatus.SHOWDOWN).getStati().get(MonsterStatus.SHOWDOWN).doubleValue() / 100.0 + 1.0);
                 }
             }
-            if (exp < 0) {//O.O ><
-                personalExp = Integer.MAX_VALUE;
-            }
+            
             attacker.gainExp(personalExp, partyExp, true, false, isKiller);
             attacker.mobKilled(getId());
             attacker.increaseEquipExp(personalExp);//better place
         }
     }
 
-    public MapleCharacter killBy(MapleCharacter killer) {
+    public MapleCharacter killBy(final MapleCharacter killer) {
         distributeExperience(killer != null ? killer.getId() : 0);
 
         if (getController() != null) { // this can/should only happen when a hidden gm attacks the monster
@@ -424,11 +423,16 @@ public class MapleMonster extends AbstractLoadedMapleLife {
                             mob.disableDrops();
                         }
                         reviveMap.spawnMonster(mob);
+                        
+                        if(mob.getId() >= 8810010 && mob.getId() <= 8810017 && reviveMap.isHorntailDefeated()) {
+                            for(int i = 8810018; i >= 8810010; i--)
+                                reviveMap.killMonster(reviveMap.getMonsterById(i), killer, true);
+                        }
                     }
                 }
             }, getAnimationTime("die1"));
         }
-        else {
+        else {  // is this even necessary?
             System.out.println("[CRITICAL LOSS] toSpawn is null for " + this.getName());
         }
         
@@ -447,6 +451,12 @@ public class MapleMonster extends AbstractLoadedMapleLife {
             listener.monsterKilled(getAnimationTime("die1"));
         }
     }
+    
+    public void dispatchMonsterDamaged(MapleCharacter from, int trueDmg) {
+        for (MonsterListener listener : listeners.toArray(new MonsterListener[listeners.size()])) {
+            listener.monsterDamaged(from, trueDmg);
+        }
+    }
 
     // should only really be used to determine drop owner
     private int getHighestDamagerId() {
@@ -992,7 +1002,7 @@ public class MapleMonster extends AbstractLoadedMapleLife {
         return(1.0f);
     }
     
-    private final void changeLevelByDifficulty(final int difficulty, boolean pqMob) {
+    private void changeLevelByDifficulty(final int difficulty, boolean pqMob) {
         changeLevel((int)(this.getLevel() * getDifficultyRate(difficulty)), pqMob);
     }
     

src/server/life/MonsterListener.java

@@ -1,6 +1,8 @@
 package server.life;
+import client.MapleCharacter;
 
 public interface MonsterListener {
     
     public void monsterKilled(int aniTime);
+    public void monsterDamaged(MapleCharacter from, int trueDmg);
 }

src/server/life/SpawnPoint.java

@@ -91,6 +91,9 @@ public class SpawnPoint {
                 }
                 spawnedMonsters.decrementAndGet();
             }
+            
+            @Override
+            public void monsterDamaged(MapleCharacter from, int trueDmg) {}
         });
         if (mobTime == 0) {
             nextPossibleSpawn = System.currentTimeMillis() + mobInterval;

src/server/maps/MapleMap.java

@@ -77,6 +77,7 @@ import server.partyquest.MonsterCarnival;
 import server.partyquest.MonsterCarnivalParty;
 import server.partyquest.Pyramid;
 import scripting.event.EventInstanceManager;
+import server.life.MonsterListener;
 import tools.FilePrinter;
 import tools.MaplePacketCreator;
 import tools.Pair;
@@ -611,7 +612,7 @@ public class MapleMap {
             }
             if (monster.getStats().selfDestruction() != null && monster.getStats().selfDestruction().getHp() > -1) {// should work ;p
                 if (monster.getHp() <= monster.getStats().selfDestruction().getHp()) {
-                    killMonster(monster, chr, true, false, monster.getStats().selfDestruction().getAction());
+                    killMonster(monster, chr, true, monster.getStats().selfDestruction().getAction());
                     return true;
                 }
             }
@@ -632,20 +633,12 @@ public class MapleMap {
     }
 
     public void killMonster(final MapleMonster monster, final MapleCharacter chr, final boolean withDrops) {
-        killMonster(monster, chr, withDrops, false, 1);
+        killMonster(monster, chr, withDrops, 1);
     }
 
-    public void killMonster(final MapleMonster monster, final MapleCharacter chr, final boolean withDrops, final boolean secondTime, int animation) {
-        if (monster.getId() == 8810018 && !secondTime) {
-            TimerManager.getInstance().schedule(new Runnable() {
-                @Override
-                public void run() {
-                    killMonster(monster, chr, withDrops, true, 1);
-                    killAllMonsters();
-                }
-            }, 3000);
-            return;
-        }
+    public void killMonster(final MapleMonster monster, final MapleCharacter chr, final boolean withDrops, int animation) {
+        if(monster == null) return;
+        
         if (chr == null) {
             spawnedMonstersOnMap.decrementAndGet();
             monster.setHp(0);
@@ -780,7 +773,7 @@ public class MapleMap {
                 continue;
             }
             
-            killMonster(monster, null, false, false, 1);
+            killMonster(monster, null, false, 1);
         }
     }
 
@@ -792,7 +785,7 @@ public class MapleMap {
         for (MapleMapObject monstermo : getMapObjectsInRange(new Point(0, 0), Double.POSITIVE_INFINITY, Arrays.asList(MapleMapObjectType.MONSTER))) {
             MapleMonster monster = (MapleMonster) monstermo;
             
-            killMonster(monster, null, false, false, 1);
+            killMonster(monster, null, false, 1);
         }
     }
 
@@ -1174,7 +1167,7 @@ public class MapleMap {
                 TimerManager.getInstance().schedule(new Runnable() {
                     @Override
                     public void run() {
-                        killMonster(monster, null, false, false, selfDestruction.getAction());
+                        killMonster(monster, null, false, selfDestruction.getAction());
                     }
                 }, selfDestruction.removeAfter() * 1000);
             }
@@ -2666,4 +2659,40 @@ public class MapleMap {
     public boolean isDojoMap() {
         return mapid >= 925020000 && mapid < 925040000;
     }
+    
+    public boolean isHorntailDefeated() {   // all parts of dead horntail can be found here?
+        for(int i = 8810010; i <= 8810017; i++) {
+            if(getMonsterById(i) == null) return false;
+        }
+        
+        return true;
+    }
+    
+    public void spawnHorntailOnGroundBelow(final Point targetPoint) {   // ayy lmao
+        spawnMonsterOnGroundBelow(MapleLifeFactory.getMonster(8810026), targetPoint);
+        TimerManager.getInstance().schedule(new Runnable() {
+            @Override
+            public void run() {
+                for (int x = 8810002; x <= 8810009; x++) {
+                    spawnMonsterOnGroundBelow(MapleLifeFactory.getMonster(x), targetPoint);
+                }
+
+                spawnMonsterOnGroundBelow(MapleLifeFactory.getMonster(8810018), targetPoint);
+                
+                final MapleMonster ht = getMonsterById(8810018);
+                for(int mobId = 8810002; mobId <= 8810009; mobId++) {
+                    getMonsterById(mobId).addListener(new MonsterListener() {
+                        @Override
+                        public void monsterKilled(int aniTime) {}
+
+                        @Override
+                        public void monsterDamaged(MapleCharacter from, int trueDmg) {
+                            ht.damage(from, trueDmg);
+                        }
+                    });
+                }
+            }
+
+        }, 5 * 1000);
+    }
 }