Can you use a Blueprint Function Library in an Object Class

Development Programming & Scripting Blueprint
, ,
31

The smallest solution I came up with is

UWorld* UMyClass::GetWorld() const
{
#if WITH_EDITOR
  if (IsTemplate()) 
  {
    return nullptr;
  } 
#endif
  
  return Super::GetWorld();
}

The solution is to not call GetWorld on anything that doesn’t override it.
In the graph editor, IsTemplate() is true, so we return nullptr and avoid the call to Super::GetWorld(). While at runtime, with an instance of our class, we keep using the base class function to use some other outer object’s GetWorld, if there’s one.

I avoid the call to IsTemplate() on a packaged game because otherwise we’d traverse the chain of outer objects always twice.

5 Likes