fix(Scripts/SerpentshrineCavern): Despawn Lurker's pool and fix visua… (#18037)

fix(Scripts/SerpentshrineCavern): Despawn Lurker's pool and fix visual issue on death

src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/boss_lurker_below.cpp

@@ -79,9 +79,26 @@ struct boss_the_lurker_below : public BossAI
     void EnterEvadeMode(EvadeReason why) override
     {
         BossAI::EnterEvadeMode(why);
+        if (GameObject* pool = instance->GetGameObject(DATA_STRANGE_POOL))
+        {
+            pool->Respawn();
+        }
         me->DespawnOrUnsummon(2000);
     }
 
+    void DamageTaken(Unit* /*attacker*/, uint32& damage, DamageEffectType /*type*/, SpellSchoolMask /*school*/) override
+    {
+        if (damage >= me->GetHealth())
+        {
+            // Liquid state around his area is working awkwardly and doesn't consider him to be swimming
+            // Therefore he falls to the bottom of the lake when he dies, because he is "flying" in his pool
+            // Removing this prevents him from dropping to the bottom of the lake
+            // There is also a visual issue currently causing him to drop to the bottom of the lake but his body not update clientside
+            // So it looks as if he was floating but he has in fact dropped to the bottom of the lake, and thus becomes unlootable
+            me->SetDisableGravity(false);
+        }
+    }
+
     void DoAction(int32 action) override
     {
         if (action == ACTION_START_EVENT)
@@ -228,6 +245,10 @@ public:
                 player->CastSpell(player, SPELL_LURKER_SPAWN_TRIGGER, true);
                 if (Creature* lurker = go->SummonCreature(NPC_THE_LURKER_BELOW, 38.4567f, -417.324f, -18.916666f, 2.94960f, TEMPSUMMON_MANUAL_DESPAWN))
                     lurker->AI()->DoAction(ACTION_START_EVENT);
+
+                go->DespawnOrUnsummon();
+                go->SetRespawnDelay(7 * DAY);
+                go->SaveRespawnTime();
                 return true;
             }
 

src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/instance_serpent_shrine.cpp

@@ -40,6 +40,12 @@ ObjectData const creatureData[] =
     { 0,                          0                           }
 };
 
+ObjectData const gameObjectData[] =
+{
+    { GO_STRANGE_POOL, DATA_STRANGE_POOL },
+    { 0,               0                 }
+};
+
 MinionData const minionData[] =
 {
     { NPC_FATHOM_GUARD_SHARKKIS,  DATA_FATHOM_LORD_KARATHRESS },
@@ -69,7 +75,7 @@ public:
             SetHeaders(DataHeader);
             SetBossNumber(MAX_ENCOUNTERS);
             LoadDoorData(doorData);
-            LoadObjectData(creatureData, nullptr);
+            LoadObjectData(creatureData, gameObjectData);
             LoadMinionData(minionData);
             LoadBossBoundaries(boundaries);
 

src/server/scripts/Outland/CoilfangReservoir/SerpentShrine/serpent_shrine.h

@@ -45,6 +45,7 @@ enum DataTypes
     DATA_ALIVE_KEEPERS                      = 22,
     DATA_BRIDGE_ACTIVATED                   = 23,
     DATA_ACTIVATE_SHIELD                    = 24,
+    DATA_STRANGE_POOL                       = 25
 };
 
 enum SSNPCs
@@ -77,7 +78,9 @@ enum SSNPCs
     GO_SHIELD_GENERATOR1                    = 185051,
     GO_SHIELD_GENERATOR2                    = 185052,
     GO_SHIELD_GENERATOR3                    = 185053,
-    GO_SHIELD_GENERATOR4                    = 185054
+    GO_SHIELD_GENERATOR4                    = 185054,
+
+    GO_STRANGE_POOL                         = 184956
 };
 
 enum SSSpells