fix(Scripts/SunwellPlateau): Fix Darkness spawning midair (#21851)

data/sql/updates/pending_db_world/rev_1743726578196339200.sql

@@ -0,0 +1,3 @@
+--
+DELETE FROM `spell_script_names` WHERE `spell_id` = 46268;
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES (46268, 'spell_muru_blackhole');

src/server/game/Entities/Object/Object.h

@@ -611,6 +611,10 @@ public:
     [[nodiscard]] virtual float GetStationaryZ() const { return GetPositionZ(); }
     [[nodiscard]] virtual float GetStationaryO() const { return GetOrientation(); }
 
+    [[nodiscard]] float GetMapWaterOrGroundLevel(Position pos, float* ground = nullptr) const
+    {
+        return GetMapWaterOrGroundLevel(pos.GetPositionX(), pos.GetPositionY(), pos.GetPositionZ(), ground);
+    };
     [[nodiscard]] float GetMapWaterOrGroundLevel(float x, float y, float z, float* ground = nullptr) const;
     [[nodiscard]] float GetMapHeight(float x, float y, float z, bool vmap = true, float distanceToSearch = 50.0f) const; // DEFAULT_HEIGHT_SEARCH in map.h
 

src/server/scripts/EasternKingdoms/SunwellPlateau/boss_muru.cpp

@@ -352,6 +352,29 @@ class spell_entropius_negative_energy_periodic : public AuraScript
     }
 };
 
+class spell_muru_blackhole : public SpellScript
+{
+    PrepareSpellScript(spell_muru_blackhole);
+
+    void ChangeSummonPos(SpellEffIndex /*effIndex*/)
+    {
+        if (!GetCaster())
+            return;
+
+        WorldLocation summonPos = *GetExplTargetDest();
+        float destZ = summonPos.GetPositionZ() - GetCaster()->GetMapWaterOrGroundLevel(GetCaster()->GetPosition());
+        Position offset = { 0.0f, 0.0f, -destZ, 0.0f};
+        summonPos.RelocateOffset(offset);
+        SetExplTargetDest(summonPos);
+        GetHitDest()->RelocateOffset(offset);
+    }
+
+    void Register() override
+    {
+        OnEffectHit += SpellEffectFn(spell_muru_blackhole::ChangeSummonPos, EFFECT_0, SPELL_EFFECT_SUMMON);
+    }
+};
+
 void AddSC_boss_muru()
 {
     RegisterSunwellPlateauCreatureAI(boss_muru);
@@ -363,4 +386,5 @@ void AddSC_boss_muru()
     RegisterSpellScript(spell_entropius_void_zone_visual_aura);
     RegisterSpellScript(spell_entropius_black_hole_effect);
     RegisterSpellScript(spell_entropius_negative_energy_periodic);
+    RegisterSpellScript(spell_muru_blackhole);
 }