Method OnGameSaved

Source/Flow/Private/FlowSubsystem.cpp:367–424

}

void UFlowSubsystem::OnGameSaved(UFlowSaveGame* SaveGame)
{
	// clear existing data, in case we received reused SaveGame instance
	// we only remove data for the current world + global Flow Graph instances (i.e. not bound to any world if created by UGameInstanceSubsystem)
	// we keep data bound to other worlds
	if (GetWorld())
	{
		const FString& WorldName = GetWorld()->GetName();

		for (int32 i = SaveGame->FlowInstances.Num() - 1; i >= 0; i--)
		{
			if (SaveGame->FlowInstances[i].WorldName.IsEmpty() || SaveGame->FlowInstances[i].WorldName == WorldName)
			{
				SaveGame->FlowInstances.RemoveAt(i);
			}
		}

		for (int32 i = SaveGame->FlowComponents.Num() - 1; i >= 0; i--)
		{
			if (SaveGame->FlowComponents[i].WorldName.IsEmpty() || SaveGame->FlowComponents[i].WorldName == WorldName)
			{
				SaveGame->FlowComponents.RemoveAt(i);
			}
		}
	}

	// save Flow Graphs
	for (const TPair<UFlowAsset*, TWeakObjectPtr<UObject>>& RootInstance : ObjectPtrDecay(RootInstances))
	{
		if (RootInstance.Key && RootInstance.Value.IsValid())
		{
			if (UFlowComponent* FlowComponent = Cast<UFlowComponent>(RootInstance.Value))
			{
				FlowComponent->SaveRootFlow(SaveGame->FlowInstances);
			}
			else
			{
				RootInstance.Key->SaveInstance(SaveGame->FlowInstances);
			}
		}
	}

	// save Flow Components
	{
		// retrieve all registered components
		TArray<TWeakObjectPtr<UFlowComponent>> ComponentsArray;
		FlowComponentRegistry.GenerateValueArray(ComponentsArray);

		// ensure uniqueness of entries
		const TSet<TWeakObjectPtr<UFlowComponent>> RegisteredComponents = TSet<TWeakObjectPtr<UFlowComponent>>(ComponentsArray);

		// write archives to SaveGame
		for (const TWeakObjectPtr<UFlowComponent> RegisteredComponent : RegisteredComponents)
		{
			SaveGame->FlowComponents.Emplace(RegisteredComponent->SaveInstance());
		}
	}
}