diff --git a/src/common/Dynamic/LinkedList.h b/src/common/Dynamic/LinkedList.h
index dc9065c9b..0d7a35e8c 100644
--- a/src/common/Dynamic/LinkedList.h
+++ b/src/common/Dynamic/LinkedList.h
@@ -94,13 +94,13 @@ public:
         iLast.iPrev = &iFirst;
     }
 
-    [[nodiscard]] bool isEmpty() const { return (!iFirst.iNext->isInList()); }
+    [[nodiscard]] bool IsEmpty() const { return (!iFirst.iNext->isInList()); }
 
-    LinkedListElement*       getFirst()       { return (isEmpty() ? nullptr : iFirst.iNext); }
-    [[nodiscard]] LinkedListElement const* getFirst() const { return (isEmpty() ? nullptr : iFirst.iNext); }
+    LinkedListElement*       getFirst()       { return (IsEmpty() ? nullptr : iFirst.iNext); }
+    [[nodiscard]] LinkedListElement const* getFirst() const { return (IsEmpty() ? nullptr : iFirst.iNext); }
 
-    LinkedListElement*       getLast() { return (isEmpty() ? nullptr : iLast.iPrev); }
-    [[nodiscard]] LinkedListElement const* getLast() const  { return (isEmpty() ? nullptr : iLast.iPrev); }
+    LinkedListElement*       getLast() { return (IsEmpty() ? nullptr : iLast.iPrev); }
+    [[nodiscard]] LinkedListElement const* getLast() const  { return (IsEmpty() ? nullptr : iLast.iPrev); }
 
     void insertFirst(LinkedListElement* pElem)
     {
diff --git a/src/server/game/AI/CreatureAI.cpp b/src/server/game/AI/CreatureAI.cpp
index 0ccce7781..c9604f00f 100644
--- a/src/server/game/AI/CreatureAI.cpp
+++ b/src/server/game/AI/CreatureAI.cpp
@@ -106,7 +106,7 @@ void CreatureAI::DoZoneInCombat(Creature* creature /*= nullptr*/, float maxRange
     }
 
     Map::PlayerList const& playerList = map->GetPlayers();
-    if (playerList.isEmpty())
+    if (playerList.IsEmpty())
     {
         return;
     }
diff --git a/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp b/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
index a77cd9fe9..bfad7890d 100644
--- a/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
+++ b/src/server/game/AI/ScriptedAI/ScriptedCreature.cpp
@@ -255,7 +255,7 @@ void ScriptedAI::DoPlayMusic(uint32 soundId, bool zone)
         Map::PlayerList const& players = me->GetMap()->GetPlayers();
         targets = new ObjectList();
 
-        if (!players.isEmpty())
+        if (!players.IsEmpty())
         {
             for (Map::PlayerList::const_iterator i = players.begin(); i != players.end(); ++i)
                 if (Player* player = i->GetSource())
diff --git a/src/server/game/AI/SmartScripts/SmartScript.cpp b/src/server/game/AI/SmartScripts/SmartScript.cpp
index 00c92b88e..f8cf172cb 100644
--- a/src/server/game/AI/SmartScripts/SmartScript.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScript.cpp
@@ -301,7 +301,7 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
                         Map::PlayerList const& players = me->GetMap()->GetPlayers();
                         targets = new ObjectList();
 
-                        if (!players.isEmpty())
+                        if (!players.IsEmpty())
                         {
                             for (Map::PlayerList::const_iterator i = players.begin(); i != players.end(); ++i)
                                 if (Player* player = i->GetSource())
@@ -350,7 +350,7 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
                         Map::PlayerList const& players = me->GetMap()->GetPlayers();
                         targets = new ObjectList();
 
-                        if (!players.isEmpty())
+                        if (!players.IsEmpty())
                         {
                             for (Map::PlayerList::const_iterator i = players.begin(); i != players.end(); ++i)
                                 if (Player* player = i->GetSource())
diff --git a/src/server/game/Entities/Creature/CreatureGroups.cpp b/src/server/game/Entities/Creature/CreatureGroups.cpp
index 37c8ce173..5ed341b40 100644
--- a/src/server/game/Entities/Creature/CreatureGroups.cpp
+++ b/src/server/game/Entities/Creature/CreatureGroups.cpp
@@ -63,7 +63,7 @@ void FormationMgr::RemoveCreatureFromGroup(CreatureGroup* group, Creature* membe
     LOG_DEBUG("entities.unit", "Deleting member pointer to spawnId: %u from group %u", member->GetSpawnId(), group->GetId());
     group->RemoveMember(member);
 
-    if (group->isEmpty())
+    if (group->IsEmpty())
     {
         Map* map = member->FindMap();
         if (!map)
diff --git a/src/server/game/Entities/Creature/CreatureGroups.h b/src/server/game/Entities/Creature/CreatureGroups.h
index 35c945b3c..6a1734a8f 100644
--- a/src/server/game/Entities/Creature/CreatureGroups.h
+++ b/src/server/game/Entities/Creature/CreatureGroups.h
@@ -93,7 +93,7 @@ public:
 
     Creature* getLeader() const { return m_leader; }
     uint32 GetId() const { return m_groupID; }
-    bool isEmpty() const { return m_members.empty(); }
+    bool IsEmpty() const { return m_members.empty(); }
     bool isFormed() const { return m_Formed; }
     const CreatureGroupMemberType& GetMembers() const { return m_members; }
 
diff --git a/src/server/game/Entities/Transport/Transport.cpp b/src/server/game/Entities/Transport/Transport.cpp
index b2d6ab925..3cb459d14 100644
--- a/src/server/game/Entities/Transport/Transport.cpp
+++ b/src/server/game/Entities/Transport/Transport.cpp
@@ -124,7 +124,7 @@ void MotionTransport::CleanupsBeforeDelete(bool finalCleanup /*= true*/)
 void MotionTransport::BuildUpdate(UpdateDataMapType& data_map, UpdatePlayerSet&)
 {
     Map::PlayerList const& players = GetMap()->GetPlayers();
-    if (players.isEmpty())
+    if (players.IsEmpty())
         return;
 
     for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
@@ -798,7 +798,7 @@ void StaticTransport::CleanupsBeforeDelete(bool finalCleanup /*= true*/)
 void StaticTransport::BuildUpdate(UpdateDataMapType& data_map, UpdatePlayerSet&)
 {
     Map::PlayerList const& players = GetMap()->GetPlayers();
-    if (players.isEmpty())
+    if (players.IsEmpty())
         return;
 
     for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
diff --git a/src/server/game/Entities/Unit/Unit.cpp b/src/server/game/Entities/Unit/Unit.cpp
index e23be051a..98a678985 100644
--- a/src/server/game/Entities/Unit/Unit.cpp
+++ b/src/server/game/Entities/Unit/Unit.cpp
@@ -416,7 +416,7 @@ void Unit::Update(uint32 p_time)
         // Check UNIT_STATE_MELEE_ATTACKING or UNIT_STATE_CHASE (without UNIT_STATE_FOLLOW in this case) so pets can reach far away
         // targets without stopping half way there and running off.
         // These flags are reset after target dies or another command is given.
-        if (m_HostileRefMgr.isEmpty())
+        if (m_HostileRefMgr.IsEmpty())
         {
             // m_CombatTimer set at aura start and it will be freeze until aura removing
             if (m_CombatTimer <= p_time)
diff --git a/src/server/game/Grids/Grid.h b/src/server/game/Grids/Grid.h
index c6e5c8e8a..b9cafdbe0 100644
--- a/src/server/game/Grids/Grid.h
+++ b/src/server/game/Grids/Grid.h
@@ -115,12 +115,12 @@ public:
 
     /*bool NoWorldObjectInGrid() const
     {
-        return i_objects.GetElements().isEmpty();
+        return i_objects.GetElements().IsEmpty();
     }
 
     bool NoGridObjectInGrid() const
     {
-        return i_container.GetElements().isEmpty();
+        return i_container.GetElements().IsEmpty();
     }*/
 private:
     TypeMapContainer<GRID_OBJECT_TYPES> i_container;
diff --git a/src/server/game/Grids/ObjectGridLoader.cpp b/src/server/game/Grids/ObjectGridLoader.cpp
index 5533ea559..7f328bcf2 100644
--- a/src/server/game/Grids/ObjectGridLoader.cpp
+++ b/src/server/game/Grids/ObjectGridLoader.cpp
@@ -200,7 +200,7 @@ void ObjectGridLoader::LoadN(void)
 template<class T>
 void ObjectGridUnloader::Visit(GridRefMgr<T>& m)
 {
-    while (!m.isEmpty())
+    while (!m.IsEmpty())
     {
         T* obj = m.getFirst()->GetSource();
         // if option set then object already saved at this moment
diff --git a/src/server/game/Handlers/MovementHandler.cpp b/src/server/game/Handlers/MovementHandler.cpp
index 4da0bd635..7426c40ad 100644
--- a/src/server/game/Handlers/MovementHandler.cpp
+++ b/src/server/game/Handlers/MovementHandler.cpp
@@ -126,7 +126,7 @@ void WorldSession::HandleMoveWorldportAck()
             _player->m_movementInfo.RemoveMovementFlag(MOVEMENTFLAG_ONTRANSPORT);
         }
 
-    if (!_player->getHostileRefMgr().isEmpty())
+    if (!_player->getHostileRefMgr().IsEmpty())
         _player->getHostileRefMgr().deleteReferences(true); // pussywizard: multithreading crashfix
 
     CellCoord pair(Acore::ComputeCellCoord(GetPlayer()->GetPositionX(), GetPlayer()->GetPositionY()));
diff --git a/src/server/game/Instances/InstanceScript.cpp b/src/server/game/Instances/InstanceScript.cpp
index b42fbee2b..0c805080e 100644
--- a/src/server/game/Instances/InstanceScript.cpp
+++ b/src/server/game/Instances/InstanceScript.cpp
@@ -412,7 +412,7 @@ void InstanceScript::DoUpdateWorldState(uint32 uiStateId, uint32 uiStateData)
 {
     Map::PlayerList const& lPlayers = instance->GetPlayers();
 
-    if (!lPlayers.isEmpty())
+    if (!lPlayers.IsEmpty())
     {
         for (Map::PlayerList::const_iterator itr = lPlayers.begin(); itr != lPlayers.end(); ++itr)
             if (Player* player = itr->GetSource())
@@ -429,7 +429,7 @@ void InstanceScript::DoSendNotifyToInstance(char const* format, ...)
 {
     InstanceMap::PlayerList const& players = instance->GetPlayers();
 
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
     {
         va_list ap;
         va_start(ap, format);
@@ -447,7 +447,7 @@ void InstanceScript::DoUpdateAchievementCriteria(AchievementCriteriaTypes type,
 {
     Map::PlayerList const& PlayerList = instance->GetPlayers();
 
-    if (!PlayerList.isEmpty())
+    if (!PlayerList.IsEmpty())
         for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
             if (Player* player = i->GetSource())
                 player->UpdateAchievementCriteria(type, miscValue1, miscValue2, unit);
@@ -458,7 +458,7 @@ void InstanceScript::DoStartTimedAchievement(AchievementCriteriaTimedTypes type,
 {
     Map::PlayerList const& PlayerList = instance->GetPlayers();
 
-    if (!PlayerList.isEmpty())
+    if (!PlayerList.IsEmpty())
         for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
             if (Player* player = i->GetSource())
                 player->StartTimedAchievement(type, entry);
@@ -469,7 +469,7 @@ void InstanceScript::DoStopTimedAchievement(AchievementCriteriaTimedTypes type,
 {
     Map::PlayerList const& PlayerList = instance->GetPlayers();
 
-    if (!PlayerList.isEmpty())
+    if (!PlayerList.IsEmpty())
         for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
             if (Player* player = i->GetSource())
                 player->RemoveTimedAchievement(type, entry);
@@ -479,7 +479,7 @@ void InstanceScript::DoStopTimedAchievement(AchievementCriteriaTimedTypes type,
 void InstanceScript::DoRemoveAurasDueToSpellOnPlayers(uint32 spell)
 {
     Map::PlayerList const& PlayerList = instance->GetPlayers();
-    if (!PlayerList.isEmpty())
+    if (!PlayerList.IsEmpty())
     {
         for (Map::PlayerList::const_iterator itr = PlayerList.begin(); itr != PlayerList.end(); ++itr)
         {
@@ -498,7 +498,7 @@ void InstanceScript::DoCastSpellOnPlayers(uint32 spell)
 {
     Map::PlayerList const& PlayerList = instance->GetPlayers();
 
-    if (!PlayerList.isEmpty())
+    if (!PlayerList.IsEmpty())
         for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
             if (Player* player = i->GetSource())
                 player->CastSpell(player, spell, true);
diff --git a/src/server/game/Maps/Map.cpp b/src/server/game/Maps/Map.cpp
index 1744e5b8b..188aa2240 100644
--- a/src/server/game/Maps/Map.cpp
+++ b/src/server/game/Maps/Map.cpp
@@ -628,7 +628,7 @@ bool Map::AddToMap(MotionTransport* obj, bool /*checkTransport*/)
     _transports.insert(obj);
 
     // Broadcast creation to players
-    if (!GetPlayers().isEmpty())
+    if (!GetPlayers().IsEmpty())
     {
         for (Map::PlayerList::const_iterator itr = GetPlayers().begin(); itr != GetPlayers().end(); ++itr)
         {
@@ -957,7 +957,7 @@ void Map::RemoveFromMap(MotionTransport* obj, bool remove)
         RemoveFromActive(obj);
 
     Map::PlayerList const& players = GetPlayers();
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
     {
         UpdateData data;
         obj->BuildOutOfRangeUpdateBlock(&data);
@@ -2873,7 +2873,7 @@ Map::EnterState InstanceMap::CannotEnter(Player* player, bool loginCheck)
 
     // cannot enter if instance is in use by another party/soloer that have a permanent save in the same instance id
     PlayerList const& playerList = GetPlayers();
-    if (!playerList.isEmpty())
+    if (!playerList.IsEmpty())
         for (PlayerList::const_iterator i = playerList.begin(); i != playerList.end(); ++i)
             if (Player* iPlayer = i->GetSource())
             {
@@ -3066,7 +3066,7 @@ bool InstanceMap::Reset(uint8 method, GuidList* globalResetSkipList)
             m_resetAfterUnload = true;
         }
 
-        return m_mapRefMgr.isEmpty();
+        return m_mapRefMgr.IsEmpty();
     }
 
     if (HavePlayers())
@@ -3083,7 +3083,7 @@ bool InstanceMap::Reset(uint8 method, GuidList* globalResetSkipList)
         m_resetAfterUnload = true;
     }
 
-    return m_mapRefMgr.isEmpty();
+    return m_mapRefMgr.IsEmpty();
 }
 
 std::string const& InstanceMap::GetScriptName() const
@@ -3679,7 +3679,7 @@ void Map::SendZoneDynamicInfo(Player* player)
 void Map::PlayDirectSoundToMap(uint32 soundId, uint32 zoneId)
 {
     Map::PlayerList const& players = GetPlayers();
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
     {
         WorldPacket data(SMSG_PLAY_SOUND, 4);
         data << uint32(soundId);
@@ -3699,7 +3699,7 @@ void Map::SetZoneMusic(uint32 zoneId, uint32 musicId)
     _zoneDynamicInfo[zoneId].MusicId = musicId;
 
     Map::PlayerList const& players = GetPlayers();
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
     {
         WorldPacket data(SMSG_PLAY_MUSIC, 4);
         data << uint32(musicId);
@@ -3721,7 +3721,7 @@ void Map::SetZoneWeather(uint32 zoneId, WeatherState weatherId, float weatherGra
     info.WeatherGrade = weatherGrade;
     Map::PlayerList const& players = GetPlayers();
 
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
     {
         WorldPackets::Misc::Weather weather(weatherId, weatherGrade);
 
@@ -3742,7 +3742,7 @@ void Map::SetZoneOverrideLight(uint32 zoneId, uint32 lightId, Milliseconds fadeI
     info.LightFadeInTime = static_cast<uint32>(fadeInTime.count());
     Map::PlayerList const& players = GetPlayers();
 
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
     {
         WorldPacket data(SMSG_OVERRIDE_LIGHT, 4 + 4 + 4);
         data << uint32(_defaultLight);
diff --git a/src/server/game/Maps/Map.h b/src/server/game/Maps/Map.h
index 1746ea2d3..3d8ff5f96 100644
--- a/src/server/game/Maps/Map.h
+++ b/src/server/game/Maps/Map.h
@@ -462,7 +462,7 @@ public:
     bool isCellMarkedLarge(uint32 pCellId) { return marked_cells_large.test(pCellId); }
     void markCellLarge(uint32 pCellId) { marked_cells_large.set(pCellId); }
 
-    [[nodiscard]] bool HavePlayers() const { return !m_mapRefMgr.isEmpty(); }
+    [[nodiscard]] bool HavePlayers() const { return !m_mapRefMgr.IsEmpty(); }
     [[nodiscard]] uint32 GetPlayersCountExceptGMs() const;
 
     void AddWorldObject(WorldObject* obj) { i_worldObjects.insert(obj); }
diff --git a/src/server/game/Pools/PoolMgr.cpp b/src/server/game/Pools/PoolMgr.cpp
index 56f1f2175..842013262 100644
--- a/src/server/game/Pools/PoolMgr.cpp
+++ b/src/server/game/Pools/PoolMgr.cpp
@@ -973,7 +973,7 @@ void PoolMgr::SaveQuestsToDB(bool daily, bool weekly, bool other)
     std::set<uint32> deletedPools;
     for (PoolGroupQuestMap::iterator itr = mPoolQuestGroups.begin(); itr != mPoolQuestGroups.end(); ++itr)
     {
-        if (itr->second.isEmpty())
+        if (itr->second.IsEmpty())
             continue;
         if (Quest const* quest = sObjectMgr->GetQuestTemplate(itr->second.GetFirstEqualChancedObjectId()))
         {
@@ -1041,7 +1041,7 @@ template<>
 void PoolMgr::SpawnPool<Creature>(uint32 pool_id, uint32 db_guid)
 {
     auto it = mPoolCreatureGroups.find(pool_id);
-    if (it != mPoolCreatureGroups.end() && !it->second.isEmpty())
+    if (it != mPoolCreatureGroups.end() && !it->second.IsEmpty())
         it->second.SpawnObject(mSpawnedData, mPoolTemplate[pool_id].MaxLimit, db_guid);
 }
 
@@ -1051,7 +1051,7 @@ template<>
 void PoolMgr::SpawnPool<GameObject>(uint32 pool_id, uint32 db_guid)
 {
     auto it = mPoolGameobjectGroups.find(pool_id);
-    if (it != mPoolGameobjectGroups.end() && !it->second.isEmpty())
+    if (it != mPoolGameobjectGroups.end() && !it->second.IsEmpty())
         it->second.SpawnObject(mSpawnedData, mPoolTemplate[pool_id].MaxLimit, db_guid);
 }
 
@@ -1061,7 +1061,7 @@ template<>
 void PoolMgr::SpawnPool<Pool>(uint32 pool_id, uint32 sub_pool_id)
 {
     auto it = mPoolPoolGroups.find(pool_id);
-    if (it != mPoolPoolGroups.end() && !it->second.isEmpty())
+    if (it != mPoolPoolGroups.end() && !it->second.IsEmpty())
         it->second.SpawnObject(mSpawnedData, mPoolTemplate[pool_id].MaxLimit, sub_pool_id);
 }
 
@@ -1070,7 +1070,7 @@ template<>
 void PoolMgr::SpawnPool<Quest>(uint32 pool_id, uint32 quest_id)
 {
     auto it = mPoolQuestGroups.find(pool_id);
-    if (it != mPoolQuestGroups.end() && !it->second.isEmpty())
+    if (it != mPoolQuestGroups.end() && !it->second.IsEmpty())
         it->second.SpawnObject(mSpawnedData, mPoolTemplate[pool_id].MaxLimit, quest_id);
 }
 
@@ -1087,22 +1087,22 @@ void PoolMgr::DespawnPool(uint32 pool_id)
 {
     {
         auto it = mPoolCreatureGroups.find(pool_id);
-        if (it != mPoolCreatureGroups.end() && !it->second.isEmpty())
+        if (it != mPoolCreatureGroups.end() && !it->second.IsEmpty())
             it->second.DespawnObject(mSpawnedData);
     }
     {
         auto it = mPoolGameobjectGroups.find(pool_id);
-        if (it != mPoolGameobjectGroups.end() && !it->second.isEmpty())
+        if (it != mPoolGameobjectGroups.end() && !it->second.IsEmpty())
             it->second.DespawnObject(mSpawnedData);
     }
     {
         auto it = mPoolPoolGroups.find(pool_id);
-        if (it != mPoolPoolGroups.end() && !it->second.isEmpty())
+        if (it != mPoolPoolGroups.end() && !it->second.IsEmpty())
             it->second.DespawnObject(mSpawnedData);
     }
     {
         auto it = mPoolQuestGroups.find(pool_id);
-        if (it != mPoolQuestGroups.end() && !it->second.isEmpty())
+        if (it != mPoolQuestGroups.end() && !it->second.IsEmpty())
             it->second.DespawnObject(mSpawnedData);
     }
 }
diff --git a/src/server/game/Pools/PoolMgr.h b/src/server/game/Pools/PoolMgr.h
index c9c34c295..89e675447 100644
--- a/src/server/game/Pools/PoolMgr.h
+++ b/src/server/game/Pools/PoolMgr.h
@@ -72,7 +72,7 @@ public:
     explicit PoolGroup() : poolId(0) { }
     void SetPoolId(uint32 pool_id) { poolId = pool_id; }
     ~PoolGroup() {};
-    bool isEmpty() const { return ExplicitlyChanced.empty() && EqualChanced.empty(); }
+    bool IsEmpty() const { return ExplicitlyChanced.empty() && EqualChanced.empty(); }
     void AddEntry(PoolObject& poolitem, uint32 maxentries);
     bool CheckPool() const;
     void DespawnObject(ActivePoolData& spawns, ObjectGuid::LowType guid = 0);
diff --git a/src/server/game/Server/WorldSession.cpp b/src/server/game/Server/WorldSession.cpp
index c46c7357c..d1e8b41cc 100644
--- a/src/server/game/Server/WorldSession.cpp
+++ b/src/server/game/Server/WorldSession.cpp
@@ -657,7 +657,7 @@ void WorldSession::LogoutPlayer(bool save)
             Map::PlayerList const& playerList = _player->GetMap()->GetPlayers();
 
             if (_player->GetMap()->IsDungeon() || _player->GetMap()->IsRaidOrHeroicDungeon())
-                if (playerList.isEmpty())
+                if (playerList.IsEmpty())
                     _player->TeleportToEntryPoint();
         }
 
diff --git a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/instance_blackrock_depths.cpp b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/instance_blackrock_depths.cpp
index ba8b879c0..b6055df4a 100644
--- a/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/instance_blackrock_depths.cpp
+++ b/src/server/scripts/EasternKingdoms/BlackrockMountain/BlackrockDepths/instance_blackrock_depths.cpp
@@ -181,7 +181,7 @@ public:
 
             // check if all players saved her.
             Map::PlayerList const& lPlayers = instance->GetPlayers();
-            if (!lPlayers.isEmpty())
+            if (!lPlayers.IsEmpty())
             {
                 for (Map::PlayerList::const_iterator itr = lPlayers.begin(); itr != lPlayers.end(); ++itr)
                 {
diff --git a/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp b/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp
index 42aa32050..a7e161d71 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/karazhan.cpp
@@ -309,7 +309,7 @@ public:
                             return;
 
                         Map::PlayerList const& PlayerList = map->GetPlayers();
-                        if (PlayerList.isEmpty())
+                        if (PlayerList.IsEmpty())
                             return;
 
                         RaidWiped = true;
diff --git a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp
index f0b6f2197..b611dd883 100644
--- a/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp
+++ b/src/server/scripts/EasternKingdoms/ScarletEnclave/chapter5.cpp
@@ -432,7 +432,7 @@ public:
         void SendUpdateWorldState(uint32 id, uint32 state)
         {
             Map::PlayerList const& players = me->GetMap()->GetPlayers();
-            if (!players.isEmpty())
+            if (!players.IsEmpty())
                 for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                     if (Player* player = itr->GetSource())
                         if (player->GetPhaseMask() & 128) // Xinef: client skips players without chapter 5 aura anyway, speedup
@@ -1125,7 +1125,7 @@ public:
                 case EVENT_OUTRO_SCENE_60:
                     {
                         Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-                        if (!PlayerList.isEmpty())
+                        if (!PlayerList.IsEmpty())
                         {
                             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                 if (i->GetSource()->IsAlive() && me->IsWithinDistInMap(i->GetSource(), 100))
diff --git a/src/server/scripts/EasternKingdoms/Stratholme/instance_stratholme.cpp b/src/server/scripts/EasternKingdoms/Stratholme/instance_stratholme.cpp
index b23389e95..b11163865 100644
--- a/src/server/scripts/EasternKingdoms/Stratholme/instance_stratholme.cpp
+++ b/src/server/scripts/EasternKingdoms/Stratholme/instance_stratholme.cpp
@@ -508,7 +508,7 @@ public:
                 case EVENT_FORCE_SLAUGHTER_EVENT:
                     {
                         Map::PlayerList const& PlayerList = instance->GetPlayers();
-                        if (!PlayerList.isEmpty())
+                        if (!PlayerList.IsEmpty())
                             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                 if (Player* player = i->GetSource())
                                     if (player->GetDistance2d(4034.97f, -3402.13f) < 50.0f)
diff --git a/src/server/scripts/EasternKingdoms/SunwellPlateau/instance_sunwell_plateau.cpp b/src/server/scripts/EasternKingdoms/SunwellPlateau/instance_sunwell_plateau.cpp
index 055fd9f4a..d4e49e663 100644
--- a/src/server/scripts/EasternKingdoms/SunwellPlateau/instance_sunwell_plateau.cpp
+++ b/src/server/scripts/EasternKingdoms/SunwellPlateau/instance_sunwell_plateau.cpp
@@ -56,7 +56,7 @@ public:
         {
             Map::PlayerList const& players = instance->GetPlayers();
 
-            if (!players.isEmpty())
+            if (!players.IsEmpty())
             {
                 for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                 {
diff --git a/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp b/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp
index 2a6e59dc2..81174781e 100644
--- a/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp
+++ b/src/server/scripts/EasternKingdoms/ZulAman/instance_zulaman.cpp
@@ -186,7 +186,7 @@ public:
                 return;
 
             Map::PlayerList const& PlayerList = instance->GetPlayers();
-            if (PlayerList.isEmpty())
+            if (PlayerList.IsEmpty())
                 return;
 
             Map::PlayerList::const_iterator i = PlayerList.begin();
diff --git a/src/server/scripts/EasternKingdoms/zone_undercity.cpp b/src/server/scripts/EasternKingdoms/zone_undercity.cpp
index cb9512818..d5374299a 100644
--- a/src/server/scripts/EasternKingdoms/zone_undercity.cpp
+++ b/src/server/scripts/EasternKingdoms/zone_undercity.cpp
@@ -1146,7 +1146,7 @@ public:
         {
             Map::PlayerList const& players = map->GetPlayers();
 
-            if (!players.isEmpty())
+            if (!players.IsEmpty())
             {
                 for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                 {
@@ -2534,7 +2534,7 @@ public:
         {
             Map::PlayerList const& players = map->GetPlayers();
 
-            if (!players.isEmpty())
+            if (!players.IsEmpty())
             {
                 for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                 {
diff --git a/src/server/scripts/Events/brewfest.cpp b/src/server/scripts/Events/brewfest.cpp
index 0bd2f326c..c1ed01722 100644
--- a/src/server/scripts/Events/brewfest.cpp
+++ b/src/server/scripts/Events/brewfest.cpp
@@ -1641,7 +1641,7 @@ struct npc_coren_direbrew : public ScriptedAI
         _summons.DespawnAll();
 
         Map::PlayerList const& players = me->GetMap()->GetPlayers();
-        if (!players.isEmpty())
+        if (!players.IsEmpty())
         {
             if (Group* group = players.begin()->GetSource()->GetGroup())
             {
diff --git a/src/server/scripts/Events/hallows_end.cpp b/src/server/scripts/Events/hallows_end.cpp
index bb302a828..e2ec0221c 100644
--- a/src/server/scripts/Events/hallows_end.cpp
+++ b/src/server/scripts/Events/hallows_end.cpp
@@ -983,7 +983,7 @@ struct boss_headless_horseman : public ScriptedAI
             (*itr)->ToCreature()->DespawnOrUnsummon(500);
 
         Map::PlayerList const& players = me->GetMap()->GetPlayers();
-        if (!players.isEmpty() && players.begin()->GetSource() && players.begin()->GetSource()->GetGroup())
+        if (!players.IsEmpty() && players.begin()->GetSource() && players.begin()->GetSource()->GetGroup())
             sLFGMgr->FinishDungeon(players.begin()->GetSource()->GetGroup()->GetGUID(), lfg::LFG_DUNGEON_HEADLESS_HORSEMAN, me->FindMap());
     }
 
diff --git a/src/server/scripts/Events/love_in_air.cpp b/src/server/scripts/Events/love_in_air.cpp
index b01db4784..5e188c22f 100644
--- a/src/server/scripts/Events/love_in_air.cpp
+++ b/src/server/scripts/Events/love_in_air.cpp
@@ -334,7 +334,7 @@ struct npc_love_in_air_hummel : public ScriptedAI
     {
         me->AI()->Talk(SAY_HUMMEL_5);
         Map::PlayerList const& players = me->GetMap()->GetPlayers();
-        if (!players.isEmpty() && players.begin()->GetSource() && players.begin()->GetSource()->GetGroup())
+        if (!players.IsEmpty() && players.begin()->GetSource() && players.begin()->GetSource()->GetGroup())
             sLFGMgr->FinishDungeon(players.begin()->GetSource()->GetGroup()->GetGUID(), lfg::LFG_DUNGEON_CROWN_CHEMICAL_CO, me->FindMap());
     }
 
diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/instance_hyjal.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/instance_hyjal.cpp
index 72bbca969..1710ce8c6 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/instance_hyjal.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/BattleForMountHyjal/instance_hyjal.cpp
@@ -189,7 +189,7 @@ public:
                                 {
                                     unit->SetVisible(false);
                                     Map::PlayerList const& PlayerList = map->GetPlayers();
-                                    if (PlayerList.isEmpty())
+                                    if (PlayerList.IsEmpty())
                                         return;
 
                                     for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/culling_of_stratholme.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/culling_of_stratholme.cpp
index eb1b042b7..357e34390 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/culling_of_stratholme.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/culling_of_stratholme.cpp
@@ -493,7 +493,7 @@ public:
                 actionEvents.ScheduleEvent(EVENT_ACTION_PHASE5 + 1, 22000);
                 me->SetFacingTo(1.84f);
 
-                if (!me->GetMap()->GetPlayers().isEmpty())
+                if (!me->GetMap()->GetPlayers().IsEmpty())
                     if (Player* player = me->GetMap()->GetPlayers().getFirst()->GetSource())
                         player->RewardPlayerAndGroupAtEvent(31006, player); // Malganis quest entry required
             }
@@ -1153,7 +1153,7 @@ public:
                             if (GameObject* go = pInstance->instance->GetGameObject(pInstance->GetGuidData(DATA_EXIT_GATE)))
                                 go->SetGoState(GO_STATE_ACTIVE);
 
-                            if (!me->GetMap()->GetPlayers().isEmpty())
+                            if (!me->GetMap()->GetPlayers().IsEmpty())
                                 if (Player* player = me->GetMap()->GetPlayers().getFirst()->GetSource())
                                     player->SummonGameObject(DUNGEON_MODE(GO_MALGANIS_CHEST_N, GO_MALGANIS_CHEST_H), 2288.35f, 1498.73f, 128.414f, -0.994837f, 0, 0, 0, 0, 0);
                         }
@@ -1219,7 +1219,7 @@ void npc_arthas::npc_arthasAI::ScheduleNextEvent(uint32 currentEvent, uint32 tim
 void npc_arthas::npc_arthasAI::SummonNextWave()
 {
     Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-    if (!PlayerList.isEmpty())
+    if (!PlayerList.IsEmpty())
         for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
             i->GetSource()->PlayerTalkClass->SendPointOfInterest(1000 + waveGroupId);
 
diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/instance_culling_of_stratholme.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/instance_culling_of_stratholme.cpp
index beb32e322..f0fd316cb 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/instance_culling_of_stratholme.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/CullingOfStratholme/instance_culling_of_stratholme.cpp
@@ -140,7 +140,7 @@ public:
                     if (_crateCount == 5)
                     {
                         Map::PlayerList const& PlayerList = instance->GetPlayers();
-                        if (!PlayerList.isEmpty())
+                        if (!PlayerList.IsEmpty())
                             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                 i->GetSource()->KilledMonsterCredit(NPC_GRAIN_CREATE_TRIGGER);
 
@@ -298,7 +298,7 @@ public:
 
         void ChromieWhisper(uint8 textId)
         {
-            if (!instance->GetPlayers().isEmpty())
+            if (!instance->GetPlayers().IsEmpty())
                 if (Player* player = instance->GetPlayers().getFirst()->GetSource())
                 {
                     Position pos = player->GetPosition();
diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/instance_old_hillsbrad.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/instance_old_hillsbrad.cpp
index a22bbcb2b..ebc469083 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/instance_old_hillsbrad.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/instance_old_hillsbrad.cpp
@@ -221,7 +221,7 @@ public:
                         if (_encounterProgress == ENCOUNTER_PROGRESS_NONE)
                         {
                             Map::PlayerList const& players = instance->GetPlayers();
-                            if (!players.isEmpty())
+                            if (!players.IsEmpty())
                                 for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                                     if (Player* player = itr->GetSource())
                                         player->KilledMonsterCredit(NPC_LODGE_QUEST_TRIGGER);
diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/old_hillsbrad.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/old_hillsbrad.cpp
index ae7885187..a9530742d 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/old_hillsbrad.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/EscapeFromDurnholdeKeep/old_hillsbrad.cpp
@@ -710,7 +710,7 @@ public:
                 case EVENT_THRALL_FACE_TARETHA:
                     {
                         Map::PlayerList const& players = me->GetMap()->GetPlayers();
-                        if (!players.isEmpty())
+                        if (!players.IsEmpty())
                             for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                                 if (Player* player = itr->GetSource())
                                     player->KilledMonsterCredit(20156);
diff --git a/src/server/scripts/Kalimdor/CavernsOfTime/TheBlackMorass/instance_the_black_morass.cpp b/src/server/scripts/Kalimdor/CavernsOfTime/TheBlackMorass/instance_the_black_morass.cpp
index e3d1f60cb..ae1e22d75 100644
--- a/src/server/scripts/Kalimdor/CavernsOfTime/TheBlackMorass/instance_the_black_morass.cpp
+++ b/src/server/scripts/Kalimdor/CavernsOfTime/TheBlackMorass/instance_the_black_morass.cpp
@@ -157,7 +157,7 @@ public:
                             medivh->AI()->DoAction(ACTION_OUTRO);
 
                         Map::PlayerList const& players = instance->GetPlayers();
-                        if (!players.isEmpty())
+                        if (!players.IsEmpty())
                             for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                                 if (Player* player = itr->GetSource())
                                 {
diff --git a/src/server/scripts/Kalimdor/TempleOfAhnQiraj/boss_cthun.cpp b/src/server/scripts/Kalimdor/TempleOfAhnQiraj/boss_cthun.cpp
index d176f732f..a2c825954 100644
--- a/src/server/scripts/Kalimdor/TempleOfAhnQiraj/boss_cthun.cpp
+++ b/src/server/scripts/Kalimdor/TempleOfAhnQiraj/boss_cthun.cpp
@@ -593,7 +593,7 @@ public:
                     //Play random sound to the zone
                     Map::PlayerList const& PlayerList = map->GetPlayers();
 
-                    if (!PlayerList.isEmpty())
+                    if (!PlayerList.IsEmpty())
                     {
                         for (Map::PlayerList::const_iterator itr = PlayerList.begin(); itr != PlayerList.end(); ++itr)
                         {
diff --git a/src/server/scripts/Northrend/CrusadersColiseum/TrialOfTheChampion/instance_trial_of_the_champion.cpp b/src/server/scripts/Northrend/CrusadersColiseum/TrialOfTheChampion/instance_trial_of_the_champion.cpp
index eb1813295..04f87b64a 100644
--- a/src/server/scripts/Northrend/CrusadersColiseum/TrialOfTheChampion/instance_trial_of_the_champion.cpp
+++ b/src/server/scripts/Northrend/CrusadersColiseum/TrialOfTheChampion/instance_trial_of_the_champion.cpp
@@ -97,7 +97,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if( !players.isEmpty() )
+                if( !players.IsEmpty() )
                     if( Player* pPlayer = players.begin()->GetSource() )
                         TeamIdInInstance = pPlayer->GetTeamId();
             }
diff --git a/src/server/scripts/Northrend/FrozenHalls/ForgeOfSouls/instance_forge_of_souls.cpp b/src/server/scripts/Northrend/FrozenHalls/ForgeOfSouls/instance_forge_of_souls.cpp
index 424bd9789..73d194f2d 100644
--- a/src/server/scripts/Northrend/FrozenHalls/ForgeOfSouls/instance_forge_of_souls.cpp
+++ b/src/server/scripts/Northrend/FrozenHalls/ForgeOfSouls/instance_forge_of_souls.cpp
@@ -74,7 +74,7 @@ public:
             if (teamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         teamIdInInstance = player->GetTeamId();
             }
diff --git a/src/server/scripts/Northrend/FrozenHalls/HallsOfReflection/instance_halls_of_reflection.cpp b/src/server/scripts/Northrend/FrozenHalls/HallsOfReflection/instance_halls_of_reflection.cpp
index 46d5dd654..6ce79f92e 100644
--- a/src/server/scripts/Northrend/FrozenHalls/HallsOfReflection/instance_halls_of_reflection.cpp
+++ b/src/server/scripts/Northrend/FrozenHalls/HallsOfReflection/instance_halls_of_reflection.cpp
@@ -204,7 +204,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                         if (Player* p = itr->GetSource())
                             if (!p->IsGameMaster())
diff --git a/src/server/scripts/Northrend/FrozenHalls/PitOfSaron/instance_pit_of_saron.cpp b/src/server/scripts/Northrend/FrozenHalls/PitOfSaron/instance_pit_of_saron.cpp
index 5468da53e..cc5022ce3 100644
--- a/src/server/scripts/Northrend/FrozenHalls/PitOfSaron/instance_pit_of_saron.cpp
+++ b/src/server/scripts/Northrend/FrozenHalls/PitOfSaron/instance_pit_of_saron.cpp
@@ -83,7 +83,7 @@ public:
             if (teamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         teamIdInInstance = player->GetTeamId();
             }
@@ -109,7 +109,7 @@ public:
             if (teamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         teamIdInInstance = player->GetTeamId();
             }
diff --git a/src/server/scripts/Northrend/IcecrownCitadel/boss_the_lich_king.cpp b/src/server/scripts/Northrend/IcecrownCitadel/boss_the_lich_king.cpp
index ccf442529..b6d1548dc 100644
--- a/src/server/scripts/Northrend/IcecrownCitadel/boss_the_lich_king.cpp
+++ b/src/server/scripts/Northrend/IcecrownCitadel/boss_the_lich_king.cpp
@@ -363,7 +363,7 @@ void SendPacketToPlayers(WorldPacket const* data, Unit* source)
 {
     // Send packet to all players in The Frozen Throne
     Map::PlayerList const& players = source->GetMap()->GetPlayers();
-    if (!players.isEmpty())
+    if (!players.IsEmpty())
         for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
             if (Player* player = itr->GetSource())
                 if (player->GetAreaId() == AREA_THE_FROZEN_THRONE)
@@ -973,7 +973,7 @@ public:
             {
                 _positionCheckTimer = 5000;
                 Map::PlayerList const& players = me->GetMap()->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     for (Map::PlayerList::const_iterator itr = players.begin(); itr != players.end(); ++itr)
                         if (Player* player = itr->GetSource())
                             if (player->GetPositionZ() < 700.0f)
diff --git a/src/server/scripts/Northrend/IcecrownCitadel/instance_icecrown_citadel.cpp b/src/server/scripts/Northrend/IcecrownCitadel/instance_icecrown_citadel.cpp
index 712819935..9d1742b64 100644
--- a/src/server/scripts/Northrend/IcecrownCitadel/instance_icecrown_citadel.cpp
+++ b/src/server/scripts/Northrend/IcecrownCitadel/instance_icecrown_citadel.cpp
@@ -238,7 +238,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         TeamIdInInstance = player->GetTeamId();
             }
@@ -485,7 +485,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         TeamIdInInstance = player->GetTeamId();
             }
@@ -530,7 +530,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         TeamIdInInstance = player->GetTeamId();
             }
@@ -634,7 +634,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         TeamIdInInstance = player->GetTeamId();
             }
@@ -1632,7 +1632,7 @@ public:
             {
                 LichKingRandomWhisperTimer = urand(100, 300) * IN_MILLISECONDS;
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         if (player->GetQuestStatus(QUEST_A_FEAST_OF_SOULS) == QUEST_STATUS_INCOMPLETE)
                         {
diff --git a/src/server/scripts/Northrend/Naxxramas/boss_four_horsemen.cpp b/src/server/scripts/Northrend/Naxxramas/boss_four_horsemen.cpp
index 358faca71..145201998 100644
--- a/src/server/scripts/Northrend/Naxxramas/boss_four_horsemen.cpp
+++ b/src/server/scripts/Northrend/Naxxramas/boss_four_horsemen.cpp
@@ -276,7 +276,7 @@ public:
             {
                 if (pInstance->GetBossState(BOSS_HORSEMAN) == DONE)
                 {
-                    if (!me->GetMap()->GetPlayers().isEmpty())
+                    if (!me->GetMap()->GetPlayers().IsEmpty())
                     {
                         if (Player* player = me->GetMap()->GetPlayers().getFirst()->GetSource())
                         {
diff --git a/src/server/scripts/Northrend/Naxxramas/boss_gothik.cpp b/src/server/scripts/Northrend/Naxxramas/boss_gothik.cpp
index 67c1ffd05..ac41d9476 100644
--- a/src/server/scripts/Northrend/Naxxramas/boss_gothik.cpp
+++ b/src/server/scripts/Northrend/Naxxramas/boss_gothik.cpp
@@ -353,7 +353,7 @@ public:
         bool CheckGroupSplitted()
         {
             Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-            if (!PlayerList.isEmpty())
+            if (!PlayerList.IsEmpty())
             {
                 bool checklife = false;
                 bool checkdead = false;
diff --git a/src/server/scripts/Northrend/Naxxramas/boss_sapphiron.cpp b/src/server/scripts/Northrend/Naxxramas/boss_sapphiron.cpp
index a14e7999d..3d62e3621 100644
--- a/src/server/scripts/Northrend/Naxxramas/boss_sapphiron.cpp
+++ b/src/server/scripts/Northrend/Naxxramas/boss_sapphiron.cpp
@@ -138,7 +138,7 @@ public:
         void EnterCombatSelfFunction()
         {
             Map::PlayerList const& PlList = me->GetMap()->GetPlayers();
-            if (PlList.isEmpty())
+            if (PlList.IsEmpty())
                 return;
 
             for (const auto& i : PlList)
diff --git a/src/server/scripts/Northrend/Nexus/EyeOfEternity/boss_malygos.cpp b/src/server/scripts/Northrend/Nexus/EyeOfEternity/boss_malygos.cpp
index e3bcdfdd3..b915ed715 100644
--- a/src/server/scripts/Northrend/Nexus/EyeOfEternity/boss_malygos.cpp
+++ b/src/server/scripts/Northrend/Nexus/EyeOfEternity/boss_malygos.cpp
@@ -494,7 +494,7 @@ public:
                             vp->SetDisableGravity(true);
 
                             Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-                            if (!PlayerList.isEmpty())
+                            if (!PlayerList.IsEmpty())
                                 for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                     if (Player* pPlayer = i->GetSource())
                                     {
@@ -714,7 +714,7 @@ public:
 
                         // mount players:
                         Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-                        if (!PlayerList.isEmpty())
+                        if (!PlayerList.IsEmpty())
                             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                 if (Player* pPlayer = i->GetSource())
                                 {
@@ -1196,7 +1196,7 @@ public:
                     {
                         GuidVector guids;
                         Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-                        if (!PlayerList.isEmpty())
+                        if (!PlayerList.IsEmpty())
                             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                 if (Player* pPlayer = i->GetSource())
                                 {
diff --git a/src/server/scripts/Northrend/Nexus/Nexus/instance_nexus.cpp b/src/server/scripts/Northrend/Nexus/Nexus/instance_nexus.cpp
index fc19d1c7f..a85e571b8 100644
--- a/src/server/scripts/Northrend/Nexus/Nexus/instance_nexus.cpp
+++ b/src/server/scripts/Northrend/Nexus/Nexus/instance_nexus.cpp
@@ -51,7 +51,7 @@ public:
         {
             Map::PlayerList const& players = instance->GetPlayers();
             TeamId TeamIdInInstance = TEAM_NEUTRAL;
-            if (!players.isEmpty())
+            if (!players.IsEmpty())
                 if (Player* pPlayer = players.begin()->GetSource())
                     TeamIdInInstance = pPlayer->GetTeamId();
 
diff --git a/src/server/scripts/Northrend/Ulduar/HallsOfStone/brann_bronzebeard.cpp b/src/server/scripts/Northrend/Ulduar/HallsOfStone/brann_bronzebeard.cpp
index bc1169775..f0bb3fcfb 100644
--- a/src/server/scripts/Northrend/Ulduar/HallsOfStone/brann_bronzebeard.cpp
+++ b/src/server/scripts/Northrend/Ulduar/HallsOfStone/brann_bronzebeard.cpp
@@ -338,7 +338,7 @@ public:
                 case ACTION_START_TRIBUNAL:
                     {
                         Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-                        if (!PlayerList.isEmpty())
+                        if (!PlayerList.IsEmpty())
                             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                             {
                                 me->SetFaction(i->GetSource()->GetFaction());
diff --git a/src/server/scripts/Northrend/VaultOfArchavon/instance_vault_of_archavon.cpp b/src/server/scripts/Northrend/VaultOfArchavon/instance_vault_of_archavon.cpp
index 9ca876b3e..7f81b6c0c 100644
--- a/src/server/scripts/Northrend/VaultOfArchavon/instance_vault_of_archavon.cpp
+++ b/src/server/scripts/Northrend/VaultOfArchavon/instance_vault_of_archavon.cpp
@@ -78,7 +78,7 @@ public:
                         if (bf->GetTimer() <= (16 * MINUTE * IN_MILLISECONDS) && bf->GetTimer() >= (15 * MINUTE * IN_MILLISECONDS))
                         {
                             Map::PlayerList const& PlayerList = instance->GetPlayers();
-                            if (!PlayerList.isEmpty())
+                            if (!PlayerList.IsEmpty())
                                 for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                     if (Player* player = i->GetSource())
                                         player->TextEmote("This instance will reset in 15 minutes.", nullptr, true);
@@ -102,7 +102,7 @@ public:
                         else if (bf->GetTimer() <= (2 * MINUTE * IN_MILLISECONDS) && bf->GetTimer() > (MINUTE * IN_MILLISECONDS))
                         {
                             Map::PlayerList const& PlayerList = instance->GetPlayers();
-                            if (!PlayerList.isEmpty())
+                            if (!PlayerList.IsEmpty())
                                 for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                     if (Player* player = i->GetSource())
                                         player->TextEmote("This instance is about to reset. Prepare to be removed.", nullptr, true);
@@ -115,7 +115,7 @@ public:
                                         cr->AI()->EnterEvadeMode();
 
                             Map::PlayerList const& PlayerList = instance->GetPlayers();
-                            if (!PlayerList.isEmpty())
+                            if (!PlayerList.IsEmpty())
                                 for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
                                     if (Player* player = i->GetSource())
                                         player->TeleportTo(player->m_homebindMapId, player->m_homebindX, player->m_homebindY, player->m_homebindZ, player->GetOrientation());
diff --git a/src/server/scripts/Northrend/VioletHold/boss_ichoron.cpp b/src/server/scripts/Northrend/VioletHold/boss_ichoron.cpp
index 29e1ba314..65379c32b 100644
--- a/src/server/scripts/Northrend/VioletHold/boss_ichoron.cpp
+++ b/src/server/scripts/Northrend/VioletHold/boss_ichoron.cpp
@@ -145,7 +145,7 @@ public:
         void IchoronDoCastToAllHostilePlayers(uint32 spellId, bool triggered)
         {
             Map::PlayerList const& PlayerList = me->GetMap()->GetPlayers();
-            if (PlayerList.isEmpty())
+            if (PlayerList.IsEmpty())
                 return;
 
             for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
diff --git a/src/server/scripts/Outland/CoilfangReservoir/SlavePens/boss_ahune.cpp b/src/server/scripts/Outland/CoilfangReservoir/SlavePens/boss_ahune.cpp
index deddcf446..9647a2b4e 100644
--- a/src/server/scripts/Outland/CoilfangReservoir/SlavePens/boss_ahune.cpp
+++ b/src/server/scripts/Outland/CoilfangReservoir/SlavePens/boss_ahune.cpp
@@ -302,7 +302,7 @@ public:
 
             bool finished = false;
             Map::PlayerList const& players = me->GetMap()->GetPlayers();
-            if (!players.isEmpty())
+            if (!players.IsEmpty())
                 for (Map::PlayerList::const_iterator i = players.begin(); i != players.end(); ++i)
                     if (Player* player = i->GetSource())
                     {
diff --git a/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/instance_shattered_halls.cpp b/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/instance_shattered_halls.cpp
index c18aa74a7..f15a02cb0 100644
--- a/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/instance_shattered_halls.cpp
+++ b/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/instance_shattered_halls.cpp
@@ -70,7 +70,7 @@ public:
             if (TeamIdInInstance == TEAM_NEUTRAL)
             {
                 Map::PlayerList const& players = instance->GetPlayers();
-                if (!players.isEmpty())
+                if (!players.IsEmpty())
                     if (Player* player = players.begin()->GetSource())
                         TeamIdInInstance = player->GetTeamId();
             }