Misc fixes

Source/Game/Entities/AreaTrigger/AreaTrigger.cs

@@ -31,6 +31,7 @@ namespace Game.Entities
             m_areaTriggerData = new AreaTriggerFieldData();
 
             _spline = new();
+            _stationaryPosition = new();
         }
 
         public override void AddToWorld()
@@ -261,9 +262,9 @@ namespace Game.Entities
 
             SpellInfo spellInfo = null;
             SpellCastVisual spellVisual = default;
-            if (spawnData.SpellForVisuals != 0)
+            if (spawnData.SpellForVisuals.HasValue)
             {
-                spellInfo = Global.SpellMgr.GetSpellInfo((uint)spawnData.SpellForVisuals, Difficulty.None);
+                spellInfo = Global.SpellMgr.GetSpellInfo(spawnData.SpellForVisuals.Value, Difficulty.None);
                 if (spellInfo != null)
                     spellVisual.SpellXSpellVisualID = spellInfo.GetSpellXSpellVisualId();
             }

Source/Game/Entities/Unit/Unit.cs

@@ -1909,7 +1909,7 @@ namespace Game.Entities
         public virtual float GetNativeObjectScale() { return 1.0f; }
 
         public float GetDisplayScale() { return m_unitData.DisplayScale; }
-        
+
         public uint GetDisplayId() { return m_unitData.DisplayID; }
 
         public virtual void SetDisplayId(uint displayId, bool setNative = false)
@@ -2088,7 +2088,17 @@ namespace Game.Entities
             return IsCharmed() ? GetCharmerGUID() : GetOwnerGUID();
         }
 
-        Player GetControllingPlayer()
+        public Unit GetDemonCreator()
+        {
+            return Global.ObjAccessor.GetUnit(this, GetDemonCreatorGUID());
+        }
+
+        public Player GetDemonCreatorPlayer()
+        {
+            return Global.ObjAccessor.GetPlayer(this, GetDemonCreatorGUID());
+        }
+
+        public Player GetControllingPlayer()
         {
             ObjectGuid guid = GetCharmerOrOwnerGUID();
             if (!guid.IsEmpty())