From 46195bd8b762be3990297642c22e0c9285a2d14a Mon Sep 17 00:00:00 2001
From: hondacrx <prelude_20032002@yahoo.com>
Date: Wed, 13 Oct 2021 10:07:09 -0400
Subject: [PATCH] Core/Spells: Implemented
 SPELL_EFFECT_TELEPORT_WITH_SPELL_VISUAL_KIT_LOADING_SCREEN

Port From (https://github.com/TrinityCore/TrinityCore/commit/49eb3cf8fea8e5eab0c102c2bfb27fad763ba07e)
---
 .../Game/Networking/Packets/SpellPackets.cs   | 18 +++++
 Source/Game/Spells/Spell.cs                   |  2 +-
 Source/Game/Spells/SpellEffects.cs            | 67 +++++++++++++++++++
 3 files changed, 86 insertions(+), 1 deletion(-)

diff --git a/Source/Game/Networking/Packets/SpellPackets.cs b/Source/Game/Networking/Packets/SpellPackets.cs
index 52777fa3a..5c742ec01 100644
--- a/Source/Game/Networking/Packets/SpellPackets.cs
+++ b/Source/Game/Networking/Packets/SpellPackets.cs
@@ -778,6 +778,24 @@ namespace Game.Networking.Packets
         public bool MountedVisual;
     }
 
+    class SpellVisualLoadScreen : ServerPacket
+    {
+        public int SpellVisualKitID;
+        public int Delay;
+
+        public SpellVisualLoadScreen(int spellVisualKitId, int delay) : base(ServerOpcodes.SpellVisualLoadScreen, ConnectionType.Instance)
+        {
+            SpellVisualKitID = spellVisualKitId;
+            Delay = delay;
+        }
+
+        public override void Write()
+        {
+            _worldPacket.WriteInt32(SpellVisualKitID);
+            _worldPacket.WriteInt32(Delay);
+        }
+    }
+    
     public class CancelCast : ClientPacket
     {
         public CancelCast(WorldPacket packet) : base(packet) { }
diff --git a/Source/Game/Spells/Spell.cs b/Source/Game/Spells/Spell.cs
index 2a48ba6ee..9992492dc 100644
--- a/Source/Game/Spells/Spell.cs
+++ b/Source/Game/Spells/Spell.cs
@@ -827,7 +827,7 @@ namespace Game.Spells
                     if (st != null)
                     {
                         // @todo fix this check
-                        if (m_spellInfo.HasEffect(SpellEffectName.TeleportUnits) || m_spellInfo.HasEffect(SpellEffectName.Bind))
+                        if (m_spellInfo.HasEffect(SpellEffectName.TeleportUnits) || m_spellInfo.HasEffect(SpellEffectName.TeleportWithSpellVisualKitLoadingScreen) || m_spellInfo.HasEffect(SpellEffectName.Bind))
                             dest = new SpellDestination(st.target_X, st.target_Y, st.target_Z, st.target_Orientation, st.target_mapId);
                         else if (st.target_mapId == m_caster.GetMapId())
                             dest = new SpellDestination(st.target_X, st.target_Y, st.target_Z, st.target_Orientation);
diff --git a/Source/Game/Spells/SpellEffects.cs b/Source/Game/Spells/SpellEffects.cs
index b92aab8ae..02aa09d18 100644
--- a/Source/Game/Spells/SpellEffects.cs
+++ b/Source/Game/Spells/SpellEffects.cs
@@ -16,6 +16,7 @@
  */
 
 using Framework.Constants;
+using Framework.Dynamic;
 using Framework.GameMath;
 using Game.BattleGrounds;
 using Game.BattlePets;
@@ -712,6 +713,40 @@ namespace Game.Spells
             }
         }
 
+        [SpellEffectHandler(SpellEffectName.TeleportWithSpellVisualKitLoadingScreen)]
+        void EffectTeleportUnitsWithVisualLoadingScreen()
+        {
+            if (effectHandleMode != SpellEffectHandleMode.HitTarget)
+                return;
+
+            if (!unitTarget)
+                return;
+
+            // If not exist data for dest location - return
+            if (!m_targets.HasDst())
+            {
+                Log.outError(LogFilter.Spells, $"Spell::EffectTeleportUnitsWithVisualLoadingScreen - does not have a destination for spellId {m_spellInfo.Id}.");
+                return;
+            }
+
+            // Init dest coordinates
+            WorldLocation targetDest = new WorldLocation(destTarget);
+            if (targetDest.GetMapId() == 0xFFFFFFFF)
+                targetDest.SetMapId(unitTarget.GetMapId());
+
+            if (targetDest.GetOrientation() == 0 && m_targets.GetUnitTarget())
+                targetDest.SetOrientation(m_targets.GetUnitTarget().GetOrientation());
+
+            if (effectInfo.MiscValueB != 0)
+            {
+                Player playerTarget = unitTarget.ToPlayer();
+                if (playerTarget != null)
+                    playerTarget.SendPacket(new SpellVisualLoadScreen(effectInfo.MiscValueB, effectInfo.MiscValue));
+            }
+
+            unitTarget.m_Events.AddEventAtOffset(new DelayedSpellTeleportEvent(unitTarget, targetDest, unitTarget == m_caster ? TeleportToOptions.Spell : 0, m_spellInfo.Id), TimeSpan.FromMilliseconds(effectInfo.MiscValue));
+        }
+        
         [SpellEffectHandler(SpellEffectName.ApplyAura)]
         [SpellEffectHandler(SpellEffectName.ApplyAuraOnPet)]
         void EffectApplyAura()
@@ -5814,4 +5849,36 @@ namespace Game.Spells
         int _chance;
         byte _charges;
     }
+
+    class DelayedSpellTeleportEvent : BasicEvent
+    {
+        Unit _target;
+        WorldLocation _targetDest;
+        TeleportToOptions _options;
+        uint _spellId;
+
+        public DelayedSpellTeleportEvent(Unit target, WorldLocation targetDest, TeleportToOptions options, uint spellId)
+        {
+            _target = target;
+            _targetDest = targetDest;
+            _options = options;
+            _spellId = spellId;
+        }
+
+        public override bool Execute(ulong e_time, uint p_time)
+        {
+            if (_targetDest.GetMapId() == _target.GetMapId())
+                _target.NearTeleportTo(_targetDest, (_options & TeleportToOptions.Spell) != 0);
+            else
+            {
+                Player player = _target.ToPlayer();
+                if (player != null)
+                    player.TeleportTo(_targetDest, _options);
+                else
+                    Log.outError(LogFilter.Spells, $"Spell::EffectTeleportUnitsWithVisualLoadingScreen - spellId {_spellId} attempted to teleport creature to a different map.");
+            }
+
+            return true;
+        }
+    }
 }
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