fix(Scripts/Temple of AhnQiraj): Slime Toxin clouds should despawn 10… (#13492)

* fix(Scripts/Temple of AhnQiraj): Slime Toxin clouds should despawn 10 sec after Viscidus death.

Fixes #13420

* Update.

src/server/game/AI/ScriptedAI/ScriptedCreature.cpp

@@ -64,14 +64,14 @@ void SummonList::DespawnEntry(uint32 entry)
     }
 }
 
-void SummonList::DespawnAll()
+void SummonList::DespawnAll(uint32 delay /*= 0*/)
 {
     while (!storage_.empty())
     {
         Creature* summon = ObjectAccessor::GetCreature(*me, storage_.front());
         storage_.pop_front();
         if (summon)
-            summon->DespawnOrUnsummon();
+            summon->DespawnOrUnsummon(delay);
     }
 }
 

src/server/game/AI/ScriptedAI/ScriptedCreature.h

@@ -89,7 +89,7 @@ public:
     void Summon(Creature const* summon) { storage_.push_back(summon->GetGUID()); }
     void Despawn(Creature const* summon) { storage_.remove(summon->GetGUID()); }
     void DespawnEntry(uint32 entry);
-    void DespawnAll();
+    void DespawnAll(uint32 delay = 0);
     bool IsAnyCreatureAlive() const;
     bool IsAnyCreatureWithEntryAlive(uint32 entry) const;
     bool IsAnyCreatureInCombat() const;

src/server/scripts/Kalimdor/TempleOfAhnQiraj/boss_viscidus.cpp

@@ -133,6 +133,17 @@ struct boss_viscidus : public BossAI
         me->RemoveAurasDueToSpell(SPELL_INVIS_SELF);
     }
 
+    void JustDied(Unit* /*killer*/) override
+    {
+        events.Reset();
+        summons.DespawnAll(10 * IN_MILLISECONDS);
+        if (instance)
+        {
+            instance->SetBossState(DATA_VISCIDUS, DONE);
+            instance->SaveToDB();
+        }
+    }
+
     void DamageTaken(Unit* attacker, uint32& damage, DamageEffectType effType, SpellSchoolMask spellSchoolMask) override
     {
         if (me->HealthBelowPct(5))