fix(Scripts/Hyjal): remove summoned mobs on boss evade and reset waves (#18975)

init

src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/boss_anetheron.cpp

@@ -32,6 +32,11 @@ enum Spells
     SPELL_INFERNAL_IMMOLATION = 31304
 };
 
+enum Misc
+{
+    NPC_TOWERING_INFERNAL   = 17818
+};
+
 enum Texts
 {
     SAY_ONDEATH         = 0,
@@ -54,6 +59,22 @@ public:
             });
     }
 
+    void EnterEvadeMode(EvadeReason why) override
+    {
+        std::list<Creature* > infernalList;
+        me->GetCreatureListWithEntryInGrid(infernalList, NPC_TOWERING_INFERNAL, 100.0f);
+        if (infernalList.size() > 0)
+        {
+            for (Creature* infernal : infernalList)
+            {
+                infernal->DespawnOrUnsummon();
+            }
+        }
+        infernalList.clear();
+        instance->SetData(DATA_RESET_ALLIANCE, 0);
+        me->DespawnOrUnsummon();
+    }
+
     void JustEngagedWith(Unit * who) override
     {
         BossAI::JustEngagedWith(who);

src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/boss_azgalor.cpp

@@ -30,6 +30,11 @@ enum Spells
     SPELL_BERSERK               = 26662
 };
 
+enum Misc
+{
+    NPC_LESSER_DOOMGUARD   = 17864
+};
+
 enum Texts
 {
     SAY_ONDEATH             = 0,
@@ -52,6 +57,22 @@ public:
             });
     }
 
+    void EnterEvadeMode(EvadeReason why) override
+    {
+        std::list<Creature* > doomguardList;
+        me->GetCreatureListWithEntryInGrid(doomguardList, NPC_LESSER_DOOMGUARD, 100.0f);
+        if (doomguardList.size() > 0)
+        {
+            for (Creature* doomguard : doomguardList)
+            {
+                doomguard->DespawnOrUnsummon();
+            }
+        }
+        doomguardList.clear();
+        instance->SetData(DATA_RESET_HORDE, 0);
+        me->DespawnOrUnsummon();
+    }
+
     void JustEngagedWith(Unit * who) override
     {
         BossAI::JustEngagedWith(who);