Spell/Script: Stasis Field

Port From (https://github.com/TrinityCore/TrinityCore/commit/adb5535483cf202572ae34065959aa94cf0304e8)

Source/Scripts/Spells/Generic.cs

@@ -277,6 +277,9 @@ namespace Scripts.Spells.Generic
         // CorruptinPlagueEntrys
         public const uint CorruptingPlague = 40350;
 
+        // StasisFieldEntrys
+        public const uint StasisField = 40307;
+
         // SiegeTankControl
         public const uint SiegeTankControl = 47963;
 
@@ -294,7 +297,7 @@ namespace Scripts.Spells.Generic
         public const uint FaceRage = 99947;
         public const uint ImpatientMind = 187213;
 
-        //enum DefenderOfAzerothData
+        // DefenderOfAzerothData
         public const uint DeathGateTeleportStormwind = 316999;
         public const uint DeathGateTeleportOrgrimmar = 317000;
     }
@@ -335,6 +338,9 @@ namespace Scripts.Spells.Generic
         public const uint ShardHideBoar = 22180;
         public const uint AetherRay = 22181;
 
+        // StasisFieldEntrys
+        public const uint DaggertailLizard = 22255;
+
         // DefenderOfAzerothData
         public const uint Nazgrim = 161706;
         public const uint Trollbane = 161707;
@@ -3777,6 +3783,35 @@ namespace Scripts.Spells.Generic
         }
     }
 
+    [Script] // 40306 - Stasis Field
+    class spell_stasis_field_aura : AuraScript
+    {
+        public override bool Validate(SpellInfo spellInfo)
+        {
+            return ValidateSpellInfo(SpellIds.StasisField);
+        }
+
+        void OnPeriodic(AuraEffect aurEff)
+        {
+            Unit owner = GetTarget();
+
+            List<Creature> targets = new();
+            StasisFieldSearcher creature_check = new(owner, 15.0f);
+            CreatureListSearcher creature_searcher = new(owner, targets, creature_check);
+            Cell.VisitGridObjects(owner, creature_searcher, 15.0f);
+
+            if (!targets.Empty())
+                return;
+
+            PreventDefaultAction();
+        }
+
+        public override void Register()
+        {
+            OnEffectPeriodic.Add(new EffectPeriodicHandler(OnPeriodic, 0, AuraType.PeriodicTriggerSpell));
+        }
+    }
+
     [Script]
     class spell_gen_vehicle_control_link : AuraScript
     {
@@ -4039,4 +4074,27 @@ namespace Scripts.Spells.Generic
             OnEffectHitTarget.Add(new EffectHandler(HandleDummy, 0, SpellEffectName.Dummy));
         }
     }
+
+    // 40307 - Stasis Field
+    class StasisFieldSearcher : ICheck<Unit>
+    {
+        Unit _unit;
+        float _distance;
+
+        public StasisFieldSearcher(Unit obj, float distance)
+        {
+            _unit = obj;
+            _distance = distance;
+        }
+
+        public bool Invoke(Unit u)
+        {
+            if (_unit.GetDistance2d(u) < _distance &&
+                (u.GetEntry() == CreatureIds.ApexisFlayer || u.GetEntry() == CreatureIds.ShardHideBoar || u.GetEntry() == CreatureIds.AetherRay || u.GetEntry() == CreatureIds.DaggertailLizard) &&
+                !u.HasAura(SpellIds.StasisField))
+                return true;
+
+            return false;
+        }
+    }
 }

sql/updates/world/master/2021_12_10_10_world_2019_06_04_03_world.sql

@@ -0,0 +1,4 @@
+-- 
+DELETE FROM `spell_script_names` WHERE `ScriptName` IN ('spell_stasis_field_aura');
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(40306,'spell_stasis_field_aura');