Core/Spells: Fixed spell effect 93 (SPELL_EFFECT_FORCE_DESELECT) (#19001)

(cherrypicked from 9e1b286984)

src/server/game/Grids/Notifiers/GridNotifiers.cpp

@@ -319,6 +319,74 @@ void MessageDistDeliverer::Visit(DynamicObjectMapType &m)
     }
 }
 
+void MessageDistDelivererToHostile::Visit(PlayerMapType &m)
+{
+    for (PlayerMapType::iterator iter = m.begin(); iter != m.end(); ++iter)
+    {
+        Player* target = iter->GetSource();
+        if (!target->IsInPhase(i_source))
+            continue;
+
+        if (target->GetExactDist2dSq(i_source) > i_distSq)
+            continue;
+
+        // Send packet to all who are sharing the player's vision
+        if (target->HasSharedVision())
+        {
+            SharedVisionList::const_iterator i = target->GetSharedVisionList().begin();
+            for (; i != target->GetSharedVisionList().end(); ++i)
+                if ((*i)->m_seer == target)
+                    SendPacket(*i);
+        }
+
+        if (target->m_seer == target || target->GetVehicle())
+            SendPacket(target);
+    }
+}
+
+void MessageDistDelivererToHostile::Visit(CreatureMapType &m)
+{
+    for (CreatureMapType::iterator iter = m.begin(); iter != m.end(); ++iter)
+    {
+        Creature* target = iter->GetSource();
+        if (!target->IsInPhase(i_source))
+            continue;
+
+        if (target->GetExactDist2dSq(i_source) > i_distSq)
+            continue;
+
+        // Send packet to all who are sharing the creature's vision
+        if (target->HasSharedVision())
+        {
+            SharedVisionList::const_iterator i = target->GetSharedVisionList().begin();
+            for (; i != target->GetSharedVisionList().end(); ++i)
+                if ((*i)->m_seer == target)
+                    SendPacket(*i);
+        }
+    }
+}
+
+void MessageDistDelivererToHostile::Visit(DynamicObjectMapType &m)
+{
+    for (DynamicObjectMapType::iterator iter = m.begin(); iter != m.end(); ++iter)
+    {
+        DynamicObject* target = iter->GetSource();
+        if (!target->IsInPhase(i_source))
+            continue;
+
+        if (target->GetExactDist2dSq(i_source) > i_distSq)
+            continue;
+
+        if (Unit* caster = target->GetCaster())
+        {
+            // Send packet back to the caster if the caster has vision of dynamic object
+            Player* player = caster->ToPlayer();
+            if (player && player->m_seer == target)
+                SendPacket(player);
+        }
+    }
+}
+
 /*
 void
 MessageDistDeliverer::VisitObject(Player* player)

src/server/game/Grids/Notifiers/GridNotifiers.h

@@ -153,6 +153,32 @@ namespace Trinity
         }
     };
 
+    struct TC_GAME_API MessageDistDelivererToHostile
+    {
+        Unit* i_source;
+        WorldPacket const* i_message;
+        float i_distSq;
+
+        MessageDistDelivererToHostile(Unit* src, WorldPacket const* msg, float dist)
+            : i_source(src), i_message(msg), i_distSq(dist * dist)
+        {
+        }
+
+        void Visit(PlayerMapType &m);
+        void Visit(CreatureMapType &m);
+        void Visit(DynamicObjectMapType &m);
+        template<class SKIP> void Visit(GridRefManager<SKIP> &) { }
+
+        void SendPacket(Player* player)
+        {
+            // never send packet to self
+            if (player == i_source || !player->HaveAtClient(i_source) || player->IsFriendlyTo(i_source))
+                return;
+
+            player->SendDirectMessage(i_message);
+        }
+    };
+
     struct ObjectUpdater
     {
         uint32 i_timeDiff;

src/server/game/Spells/SpellEffects.cpp

@@ -22,6 +22,7 @@
 #include "Battleground.h"
 #include "BattlegroundMgr.h"
 #include "BattlePetMgr.h"
+#include "CellImpl.h"
 #include "CombatLogPackets.h"
 #include "CombatPackets.h"
 #include "Common.h"
@@ -36,6 +37,7 @@
 #include "GameObjectAI.h"
 #include "Garrison.h"
 #include "GossipDef.h"
+#include "GridNotifiers.h"
 #include "Group.h"
 #include "Guild.h"
 #include "InstanceScript.h"
@@ -4089,9 +4091,28 @@ void Spell::EffectForceDeselect(SpellEffIndex /*effIndex*/)
     if (effectHandleMode != SPELL_EFFECT_HANDLE_HIT)
         return;
 
+    float dist = m_caster->GetVisibilityRange();
+
+    // clear focus
+    WorldPackets::Combat::BreakTarget breakTarget;
+    breakTarget.UnitGUID = m_caster->GetGUID();
+    Trinity::MessageDistDelivererToHostile notifierBreak(m_caster, breakTarget.Write(), dist);
+    Cell::VisitWorldObjects(m_caster, notifierBreak, dist);
+
+    // and selection
     WorldPackets::Spells::ClearTarget clearTarget;
     clearTarget.Guid = m_caster->GetGUID();
-    m_caster->SendMessageToSet(clearTarget.Write(), true);
+    Trinity::MessageDistDelivererToHostile notifierClear(m_caster, clearTarget.Write(), dist);
+    Cell::VisitWorldObjects(m_caster, notifierClear, dist);
+
+    // we should also force pets to remove us from current target
+    Unit::AttackerSet attackerSet;
+    for (Unit::AttackerSet::const_iterator itr = m_caster->getAttackers().begin(); itr != m_caster->getAttackers().end(); ++itr)
+        if ((*itr)->GetTypeId() == TYPEID_UNIT && !(*itr)->CanHaveThreatList())
+            attackerSet.insert(*itr);
+
+    for (Unit::AttackerSet::const_iterator itr = attackerSet.begin(); itr != attackerSet.end(); ++itr)
+        (*itr)->AttackStop();
 }
 
 void Spell::EffectSelfResurrect(SpellEffIndex /*effIndex*/)