Unreal Engine Upgrades

DataConfig is committed to support multiple UE versions with no deprecations and warnings. On this page we'll document important upgrade and migration info.

UE4

  • The oldest version DataConfig supports is UE 4.25, in which it introduces a major refactor that changes UProperty to FProperty. We intended to support UE4 in the foreseeable future, especially when we now have separated uplugin for UE4 and UE5.

UE5.0

  • New TObjectPtr to replace raw UObject pointers. Turns out this is mostly handled within the engine and is transparent to DataConfig.

  • New property types FObjectPtrProperty and FClassPtrProperty are added. They're handled the same as FObjectProperty and FClassProperty respectively.

  • FVector now is 3 doubles, and Real data type in Blueprint now is also double. This is also mostly transparent to DataConfig.

  • FScriptArrayHelperAccess size changes with a added uint32 ElementAlignment.

  • TStringBuilderWithBuffer API changes. At call sites we now do Sb << TCHAR('\n') instead of Sb.Append(TCHAR('\n')) .

UE5.1

  • UE5.1 deprecates ANY_PACKAGE in favor of a new method FindFirstObject. In DataConfig we provided DcSerdeUtils::FindFirstObject which calls FindObject(ANY_PACKAGE) pre 5.1 and calls FindFirstObject() for 5.1 and onwards.