I use FCoreUObjectDelegates::PostLoadMapWithWorld.AddRaw bind with a function and I think it will be executed after I enter "Play" by "VR Preview" Mode,But the function has not been executed

Development Programming & Scripting
1

I use FCoreUObjectDelegates::PostLoadMapWithWorld.AddRaw bind with a function and I think it will be executed after I enter “Play” by “VR Preview” Mode,But the function has not been executed.

2

where u able to solve the issue?

3

There are a bunch of dead delegates that never get called littered around the source. Happy hunting. Sorry!

4

I had the same issue, very weird how this delegate isn’t called. But there’s another way that’s more reliable. This is what you do:

  1. Bind a function to FWorldDelegates::OnWorldInitializedActors

    FWorldDelegates::OnWorldInitializedActors.AddRaw(this, &YourClass::OnWorldInitialized);

  2. In the function that is bound to OnWorldInitializedActors, bind a function to OnWorldBeginPlay that you want called when a map loads/when BeginPlay is done.

void YourClass::OnWorldInitialized(const UWorld::FActorsInitializedParams& Params)
{
	if (Params.World)
	{
		Params.World->OnWorldBeginPlay.AddRaw(this, &YourClass::FunctionToCall);
	}
}
3 Likes
5

That worked for me except I had to bind using AddUObject instead of AddRaw. Thanks!

1 Like
7

FCoreUObjectDelegates::PostLoadMapWithWorld.AddUObject(this, &UMySaveGame::OnMapLoaded); worked for me in UE 5.7

My mistake was to not save the pointer to the MySaveGame object. I was just testing around, so I didn’t bother to create a pointer variable. My OnMapLoaded function could not be called since MySaveGame object got garbage collected after calling UGameplayStatics::OpenLevel(). :sweat_smile: