feat(Core/ObjectAccessor): Helper to access creature/object by DB GUID (#14802)

src/server/game/Globals/ObjectAccessor.cpp

@@ -282,6 +282,58 @@ Player* ObjectAccessor::FindPlayerByName(std::string const& name, bool checkInWo
     return nullptr;
 }
 
+/**
+ * @brief Get a spawned creature by DB `guid` column. MODULE USAGE ONLY - USE IT FOR CUSTOM CONTENT.
+ *
+ * @param uint32 mapId The map id where the creature is spawned.
+ * @param uint64 guid Database guid of the creature we are accessing.
+ */
+Creature* ObjectAccessor::GetSpawnedCreatureByDBGUID(uint32 mapId, uint64 guid)
+{
+    if (Map* map = sMapMgr->FindBaseMap(mapId))
+    {
+        auto bounds = map->GetCreatureBySpawnIdStore().equal_range(guid);
+
+        if (bounds.first == bounds.second)
+        {
+            return nullptr;
+        }
+
+        if (Creature* creature = bounds.first->second)
+        {
+            return creature;
+        }
+    }
+
+    return nullptr;
+}
+
+/**
+ * @brief Get a spawned gameobject by DB `guid` column. MODULE USAGE ONLY - USE IT FOR CUSTOM CONTENT.
+ *
+ * @param uint32 mapId The map id where the gameobject is spawned.
+ * @param uint64 guid Database guid of the gameobject we are accessing.
+ */
+GameObject* ObjectAccessor::GetSpawnedGameObjectByDBGUID(uint32 mapId, uint64 guid)
+{
+    if (Map* map = sMapMgr->FindBaseMap(mapId))
+    {
+        auto bounds = map->GetGameObjectBySpawnIdStore().equal_range(guid);
+
+        if (bounds.first == bounds.second)
+        {
+            return nullptr;
+        }
+
+        if (GameObject* go = bounds.first->second)
+        {
+            return go;
+        }
+    }
+
+    return nullptr;
+}
+
 template<>
 void ObjectAccessor::AddObject(Player* player)
 {

src/server/game/Globals/ObjectAccessor.h

@@ -83,6 +83,8 @@ namespace ObjectAccessor
     Player* FindPlayerByLowGUID(ObjectGuid::LowType lowguid);
     Player* FindConnectedPlayer(ObjectGuid const guid);
     Player* FindPlayerByName(std::string const& name, bool checkInWorld = true);
+    Creature* GetSpawnedCreatureByDBGUID(uint32 mapId, uint64 guid);
+    GameObject* GetSpawnedGameObjectByDBGUID(uint32 mapId, uint64 guid);
 
     // when using this, you must use the hashmapholder's lock
     HashMapHolder<Player>::MapType const& GetPlayers();