Scripts/Spells: Divine Star (Priest) fixed

Port From (https://github.com/TrinityCore/TrinityCore/commit/6b944b9e56969fb465449ecda7c8561696c06833)

Source/Game/Entities/AreaTrigger/AreaTrigger.cs

@@ -749,7 +749,7 @@ namespace Game.Entities
             InitSplines(rotatedPoints, timeToTarget);
         }
 
-        void InitSplines(List<Vector3> splinePoints, uint timeToTarget)
+        public void InitSplines(List<Vector3> splinePoints, uint timeToTarget)
         {
             if (splinePoints.Count < 2)
                 return;

Source/Scripts/Spells/Priest.cs

@@ -16,14 +16,17 @@
  */
 
 using Framework.Constants;
+using Framework.Dynamic;
 using Game.AI;
 using Game.Entities;
+using Game.Maps;
+using Game.Movement;
 using Game.Scripting;
 using Game.Spells;
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Game.Maps;
+using System.Numerics;
 
 namespace Scripts.Spells.Priest
 {
@@ -40,6 +43,8 @@ namespace Scripts.Spells.Priest
         public const uint BodyAndSoul = 64129;
         public const uint BodyAndSoulSpeed = 65081;
         public const uint DivineBlessing = 40440;
+        public const uint DivineStarDamage = 122128;
+        public const uint DivineStarHeal = 110745;
         public const uint DivineWrath = 40441;
         public const uint FlashHeal = 2061;
         public const uint GuardianSpiritHeal = 48153;
@@ -332,6 +337,118 @@ namespace Scripts.Spells.Priest
         }
     }
 
+    [Script] // 110744 - Divine Star
+    class areatrigger_pri_divine_star : AreaTriggerAI
+    {
+        TaskScheduler _scheduler = new();
+        Position _casterCurrentPosition = new();
+        List<ObjectGuid> _affectedUnits = new();
+
+        public areatrigger_pri_divine_star(AreaTrigger areatrigger) : base(areatrigger) { }
+
+        public override void OnInitialize()
+        {
+            Unit caster = at.GetCaster();
+            if (caster != null)
+            {
+                _casterCurrentPosition = caster.GetPosition();
+
+                // Note: max. distance at which the Divine Star can travel to is 24 yards.
+                float divineStarXOffSet = 24.0f;
+
+                Position destPos = _casterCurrentPosition;
+                at.MovePositionToFirstCollision(destPos, divineStarXOffSet, 0.0f);
+
+                PathGenerator firstPath = new(at);
+                firstPath.CalculatePath(destPos.GetPositionX(), destPos.GetPositionY(), destPos.GetPositionZ(), false);
+
+                Vector3 endPoint = firstPath.GetPath().Last();
+
+                // Note: it takes 1000ms to reach 24 yards, so it takes 41.67ms to run 1 yard.
+                at.InitSplines(firstPath.GetPath().ToList(), (uint)(at.GetDistance(endPoint.X, endPoint.Y, endPoint.Z) * 41.67f));
+            }
+        }
+
+        public override void OnUpdate(uint diff)
+        {
+            _scheduler.Update(diff);
+        }
+
+        public override void OnUnitEnter(Unit unit)
+        {
+            Unit caster = at.GetCaster();
+            if (caster != null)
+            {
+                if (!_affectedUnits.Contains(unit.GetGUID()))
+                {
+                    if (caster.IsValidAttackTarget(unit))
+                        caster.CastSpell(unit, SpellIds.DivineStarDamage, new CastSpellExtraArgs(TriggerCastFlags.IgnoreGCD | TriggerCastFlags.IgnoreCastInProgress));
+                    else if (caster.IsValidAssistTarget(unit))
+                        caster.CastSpell(unit, SpellIds.DivineStarHeal, new CastSpellExtraArgs(TriggerCastFlags.IgnoreGCD | TriggerCastFlags.IgnoreCastInProgress));
+
+                    _affectedUnits.Add(unit.GetGUID());
+                }
+            }
+        }
+
+        public override void OnUnitExit(Unit unit)
+        {
+            // Note: this ensures any unit receives a second hit if they happen to be inside the AT when Divine Star starts its return path.
+            Unit caster = at.GetCaster();
+            if (caster != null)
+            {
+                if (!_affectedUnits.Contains(unit.GetGUID()))
+                {
+                    if (caster.IsValidAttackTarget(unit))
+                        caster.CastSpell(unit, SpellIds.DivineStarDamage, new CastSpellExtraArgs(TriggerCastFlags.IgnoreGCD | TriggerCastFlags.IgnoreCastInProgress));
+                    else if (caster.IsValidAssistTarget(unit))
+                        caster.CastSpell(unit, SpellIds.DivineStarHeal, new CastSpellExtraArgs(TriggerCastFlags.IgnoreGCD | TriggerCastFlags.IgnoreCastInProgress));
+
+                    _affectedUnits.Add(unit.GetGUID());
+                }
+            }
+        }
+
+        public override void OnDestinationReached()
+        {
+            Unit caster = at.GetCaster();
+            if (caster == null)
+                return;
+
+            if (at.GetDistance(_casterCurrentPosition) > 0.05f)
+            {
+                _affectedUnits.Clear();
+
+                ReturnToCaster();
+            }
+            else
+                at.Remove();
+        }
+
+        void ReturnToCaster()
+        {
+            _scheduler.Schedule(TimeSpan.FromMilliseconds(0), task =>
+                {
+                    Unit caster = at.GetCaster();
+                    if (caster != null)
+                    {
+                        _casterCurrentPosition = caster.GetPosition();
+
+                        List<Vector3> returnSplinePoints = new();
+
+                        returnSplinePoints.Add(at.GetPosition());
+                        returnSplinePoints.Add(at.GetPosition());
+                        returnSplinePoints.Add(caster.GetPosition());
+                        returnSplinePoints.Add(caster.GetPosition());
+
+                        at.InitSplines(returnSplinePoints, (uint)at.GetDistance(caster) / 24 * 1000);
+
+                        task.Repeat(TimeSpan.FromMilliseconds(250));
+                    }
+                });
+        }
+    }
+    
     [Script] // 47788 - Guardian Spirit
     class spell_pri_guardian_spirit : AuraScript
     {

sql/updates/world/master/2022_08_02_03_world.sql

@@ -0,0 +1 @@
+UPDATE `areatrigger_create_properties` SET `ScriptName`='areatrigger_pri_divine_star', `VerifiedBuild`=44325 WHERE `Id`=2148;