Core/Entities: Added possibility to inherit StringIds from other entities (#29908)

* also implicitly do so for personal summons

(cherry picked from commit 88bbd27f8d007dca17bb0d244fcf7e753506734e)

Author: mdX7

src/server/game/Entities/Creature/Creature.cpp

@@ -2776,6 +2776,15 @@ uint32 Creature::GetScriptId() const
     return ASSERT_NOTNULL(sObjectMgr->GetCreatureTemplate(GetEntry()))->ScriptID;
 }
 
+void Creature::InheritStringIds(Creature const* parent)
+{
+    // copy references to stringIds from template and spawn
+    m_stringIds = parent->m_stringIds;
+
+    // then copy script stringId, not just its reference
+    SetScriptStringId(std::string(parent->GetStringId(StringIdType::Script)));
+}
+
 bool Creature::HasStringId(std::string_view id) const
 {
     return std::find(m_stringIds.begin(), m_stringIds.end(), id) != m_stringIds.end();

src/server/game/Entities/Creature/Creature.h

@@ -198,6 +198,7 @@ class TC_GAME_API Creature : public Unit, public GridObject<Creature>, public Ma
         std::string const& GetAIName() const;
         std::string GetScriptName() const;
         uint32 GetScriptId() const;
+        void InheritStringIds(Creature const* parent);
         bool HasStringId(std::string_view id) const;
         void SetScriptStringId(std::string id);
         std::array<std::string_view, 3> const& GetStringIds() const { return m_stringIds; }

src/server/game/Entities/GameObject/GameObject.cpp

@@ -2275,6 +2275,15 @@ uint32 GameObject::GetScriptId() const
     return GetGOInfo()->ScriptId;
 }
 
+void GameObject::InheritStringIds(GameObject const* parent)
+{
+    // copy references to stringIds from template and spawn
+    m_stringIds = parent->m_stringIds;
+
+    // then copy script stringId, not just its reference
+    SetScriptStringId(std::string(parent->GetStringId(StringIdType::Script)));
+}
+
 bool GameObject::HasStringId(std::string_view id) const
 {
     return std::find(m_stringIds.begin(), m_stringIds.end(), id) != m_stringIds.end();

src/server/game/Entities/GameObject/GameObject.h

@@ -274,6 +274,7 @@ class TC_GAME_API GameObject : public WorldObject, public GridObject<GameObject>
         uint32 GetScriptId() const;
         GameObjectAI* AI() const { return m_AI; }
 
+        void InheritStringIds(GameObject const* parent);
         bool HasStringId(std::string_view id) const;
         void SetScriptStringId(std::string id);
         std::array<std::string_view, 3> const& GetStringIds() const { return m_stringIds; }