Core/PacketIO: Implemented CMSG_UPDATE_AREA_TRIGGER_VISUAL

Port From (https://github.com/TrinityCore/TrinityCore/commit/b88f4b7f4f8744b7cd455c07d3b94a704c373dfe)

Source/Game/Entities/AreaTrigger/AreaTrigger.cs

@@ -136,14 +136,12 @@ namespace Game.Entities
                 spellForVisuals = Global.SpellMgr.GetSpellInfo(GetCreateProperties().SpellForVisuals.Value, Difficulty.None);
 
                 if (spellForVisuals != null)
-                    spellVisual.SpellXSpellVisualID = spellForVisuals.GetSpellXSpellVisualId();
+                    spellVisual.SpellXSpellVisualID = caster != null ? caster.GetCastSpellXSpellVisualId(spellForVisuals) : spellForVisuals.GetSpellXSpellVisualId();
             }
             if (spellForVisuals != null)
                 SetUpdateFieldValue(areaTriggerData.ModifyValue(m_areaTriggerData.SpellForVisuals), spellForVisuals.Id);
 
-            SpellCastVisualField spellCastVisual = areaTriggerData.ModifyValue(m_areaTriggerData.SpellVisual);
-            SetUpdateFieldValue(ref spellCastVisual.SpellXSpellVisualID, spellVisual.SpellXSpellVisualID);
-            SetUpdateFieldValue(ref spellCastVisual.ScriptVisualID, spellVisual.ScriptVisualID);
+            SetSpellVisual(spellVisual);
 
             if (!IsStaticSpawn())
                 SetUpdateFieldValue(areaTriggerData.ModifyValue(m_areaTriggerData.TimeToTargetScale), GetCreateProperties().TimeToTargetScale != 0 ? GetCreateProperties().TimeToTargetScale : m_areaTriggerData.Duration);
@@ -404,6 +402,13 @@ namespace Game.Entities
             ClearScaleCurve(m_values.ModifyValue(m_areaTriggerData).ModifyValue(m_areaTriggerData.OverrideMoveCurveZ));
         }
 
+        public void SetSpellVisual(SpellCastVisual visual)
+        {
+            SpellCastVisualField spellCastVisual = m_values.ModifyValue(m_areaTriggerData).ModifyValue(m_areaTriggerData.SpellVisual);
+            SetUpdateFieldValue(ref spellCastVisual.SpellXSpellVisualID, visual.SpellXSpellVisualID);
+            SetUpdateFieldValue(ref spellCastVisual.ScriptVisualID, visual.ScriptVisualID);
+        }
+
         public void SetDuration(int newDuration)
         {
             _duration = newDuration;
@@ -1449,7 +1454,7 @@ namespace Game.Entities
 
         public AreaTriggerOrbitInfo GetOrbit() { return _orbitInfo; }
 
-        AreaTriggerFieldData m_areaTriggerData;
+        public AreaTriggerFieldData m_areaTriggerData;
 
         ulong _spawnId;
 

Source/Game/Globals/ObjectAccessor.cs

@@ -116,7 +116,7 @@ public class ObjectAccessor : Singleton<ObjectAccessor>
         return u.GetMap().GetDynamicObject(guid);
     }
 
-    static AreaTrigger GetAreaTrigger(WorldObject u, ObjectGuid guid)
+    public static AreaTrigger GetAreaTrigger(WorldObject u, ObjectGuid guid)
     {
         return u.GetMap().GetAreaTrigger(guid);
     }

Source/Game/Handlers/SpellHandler.cs

@@ -623,6 +623,23 @@ namespace Game
                 _player.SetChannelVisual(new SpellCastVisualField() { SpellXSpellVisualID = spellXspellVisualId });
         }
 
+        [WorldPacketHandler(ClientOpcodes.UpdateAreaTriggerVisual, Processing = PacketProcessing.Inplace)]
+        void HandleUpdateAreaTriggerVisual(UpdateAreaTriggerVisual updateAreaTriggerVisual)
+        {
+            AreaTrigger target = ObjectAccessor.GetAreaTrigger(_player, updateAreaTriggerVisual.TargetGUID);
+            if (target == null)
+                return;
+
+            if (target.GetCasterGuid() != _player.GetGUID())
+                return;
+
+            SpellInfo spellInfo = Global.SpellMgr.GetSpellInfo(target.m_areaTriggerData.SpellForVisuals, _player.GetMap().GetDifficultyID());
+            if (spellInfo == null)
+                return;
+
+            target.SetSpellVisual(new SpellCastVisual(_player.GetCastSpellXSpellVisualId(spellInfo), 0));
+        }
+
         [WorldPacketHandler(ClientOpcodes.KeyboundOverride, Processing = PacketProcessing.ThreadSafe)]
         void HandleKeyboundOverride(KeyboundOverride keyboundOverride)
         {

Source/Game/Networking/Packets/AreaTriggerPackets.cs

@@ -93,6 +93,23 @@ namespace Game.Networking.Packets
         }
     }
 
+    class UpdateAreaTriggerVisual : ClientPacket
+    {
+        public int SpellID;
+        public SpellCastVisual Visual;
+        public ObjectGuid TargetGUID;
+
+        public UpdateAreaTriggerVisual(WorldPacket packet) : base(packet) { }
+
+        public override void Read()
+        {
+            SpellID = _worldPacket.ReadInt32();
+            Visual.Read(_worldPacket);
+            TargetGUID = _worldPacket.ReadPackedGuid();
+        }
+    }
+
+
     //Structs
     class AreaTriggerSplineInfo
     {