Core/SmartAI: add param2 to SMART_ACTION_UPDATE_TEMPLATE, allowing to specify if creature's level should remain the same between entry updates.

A value of 0 (default) forces the creature to keep its current level between entry updates.

Fixes #16371

(cherry picked from commit a6ef9d45395be0f4551a55439c7790a288c40df8)

4 files changed, 6 insertions, 4 deletions

diff --git a/src/server/game/AI/SmartScripts/SmartScript.cpp b/src/server/game/AI/SmartScripts/SmartScript.cpp
index d814143a9ae..2a316e7e14b 100644
--- a/src/server/game/AI/SmartScripts/SmartScript.cpp
+++ b/src/server/game/AI/SmartScripts/SmartScript.cpp
@@ -1035,7 +1035,7 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
 
             for (ObjectList::const_iterator itr = targets->begin(); itr != targets->end(); ++itr)
                 if (IsCreature(*itr))
-                    (*itr)->ToCreature()->UpdateEntry(e.action.updateTemplate.creature);
+                    (*itr)->ToCreature()->UpdateEntry(e.action.updateTemplate.creature, nullptr, e.action.updateTemplate.updateLevel);
 
             delete targets;
             break;
diff --git a/src/server/game/AI/SmartScripts/SmartScriptMgr.h b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
index 2fde9031a36..a5c4f96b333 100644
--- a/src/server/game/AI/SmartScripts/SmartScriptMgr.h
+++ b/src/server/game/AI/SmartScripts/SmartScriptMgr.h
@@ -741,6 +741,7 @@ struct SmartAction
         struct
         {
             uint32 creature;
+            uint32 updateLevel;
         } updateTemplate;
 
         struct
diff --git a/src/server/game/Entities/Creature/Creature.cpp b/src/server/game/Entities/Creature/Creature.cpp
index 1288e84e31d..8e16c9e0c17 100644
--- a/src/server/game/Entities/Creature/Creature.cpp
+++ b/src/server/game/Entities/Creature/Creature.cpp
@@ -406,7 +406,7 @@ bool Creature::InitEntry(uint32 entry, CreatureData const* data /*= nullptr*/)
     return true;
 }
 
-bool Creature::UpdateEntry(uint32 entry, CreatureData const* data /*= nullptr*/)
+bool Creature::UpdateEntry(uint32 entry, CreatureData const* data /*= nullptr*/, bool updateLevel /* = true */)
 {
     if (!InitEntry(entry, data))
         return false;
@@ -441,7 +441,8 @@ bool Creature::UpdateEntry(uint32 entry, CreatureData const* data /*= nullptr*/)
     SetBaseAttackTime(OFF_ATTACK,    cInfo->BaseAttackTime);
     SetBaseAttackTime(RANGED_ATTACK, cInfo->RangeAttackTime);
 
-    SelectLevel();
+    if (updateLevel)
+        SelectLevel();
 
     SetMeleeDamageSchool(SpellSchools(cInfo->dmgschool));
     CreatureBaseStats const* stats = sObjectMgr->GetCreatureBaseStats(getLevel(), cInfo->unit_class);
diff --git a/src/server/game/Entities/Creature/Creature.h b/src/server/game/Entities/Creature/Creature.h
index 2fdf36049ae..51a5b3b93e6 100644
--- a/src/server/game/Entities/Creature/Creature.h
+++ b/src/server/game/Entities/Creature/Creature.h
@@ -761,7 +761,7 @@ class TC_GAME_API Creature : public Unit, public GridObject<Creature>, public Ma
 
         bool HasSpell(uint32 spellID) const override;
 
-        bool UpdateEntry(uint32 entry, CreatureData const* data = nullptr);
+        bool UpdateEntry(uint32 entry, CreatureData const* data = nullptr, bool updateLevel = true);
 
         void UpdateMovementFlags();