feat(Lua): RegisterCustomProperty now available for ScriptStruct (#1036)

* feat(Lua): RegisterCustomProperty now available for ScriptStruct

* chore: Updated changelog

Author: UE4SS

UE4SS/src/LuaType/LuaCustomProperty.cpp

@@ -43,7 +43,15 @@ namespace RC::LuaType
                 owner_or_outer = owner.ToField();
             }
 
-            Unreal::UStruct* ptr = base->GetClassPrivate();
+            Unreal::UStruct* ptr{};
+            if (base->IsA<Unreal::UStruct>())
+            {
+                ptr = static_cast<Unreal::UStruct*>(base);
+            }
+            else
+            {
+                ptr = base->GetClassPrivate();
+            }
             bool class_matches = ptr == owner_or_outer;
 
             if (!class_matches)

UE4SS/src/LuaType/LuaUScriptStruct.cpp

@@ -166,7 +166,12 @@ namespace RC::LuaType
     {
         // Access the given property in the given UScriptStruct
 
-        auto property = static_cast<Unreal::FStructProperty*>(struct_data.script_struct->FindProperty(property_name));
+        auto property_name_str = property_name.ToString();
+        auto property = LuaCustomProperty::StaticStorage::property_list.find_or_nullptr(struct_data.script_struct, property_name_str);
+        if (!property)
+        {
+            property = static_cast<Unreal::FStructProperty*>(struct_data.script_struct->FindProperty(property_name));
+        }
         if (!property)
         {
             lua.throw_error(fmt::format("[handle_unreal_property_value]: Was unable to retrieve property '{}' mapped to '{}'",

assets/Changelog.md

@@ -111,6 +111,8 @@ Added custom module searcher with UTF-8 path support for Lua `require()` ([UE4SS
 - Fixed `CreateLogicModsDirectory` to properly create directories with Unicode paths and handle parent directory creation
 - Fixed global Lua `print` function to properly handle UTF-8 string conversion
 
+Added support for `UScriptStruct` when using `RegisterCustomProprety` ([UE4SS #1036](https://github.com/UE4SS-RE/RE-UE4SS/pull/1036))
+
 #### Types.lua [PR #650](https://github.com/UE4SS-RE/RE-UE4SS/pull/650) 
 - Added `NAME_None` definition 
 - Added `EFindName` enum definition