Unable to find class FSubsystemCollectionBase

Development Programming & Scripting C++
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1

Hey everyone! Either got a really weird issue here or I am really dumb. I am using UE 5.4.4.

I derived a class from UEngineSubsystem:

#include "CoreMinimal.h"
#include "Subsystems/EngineSubsystem.h"
#include "UniverseStatesSystem.generated.h"

UCLASS()
class SATURN_API UUniverseStatesSystem : public UEngineSubsystem
{
	GENERATED_BODY()

// Overrides
protected:

	UFUNCTION()
	virtual void Initialize(FSubsystemCollectionBase& Collection) override;
};

#include "GameData/Masters/UniverseStatesSystem.h"

void UUniverseStatesSystem::Initialize(FSubsystemCollectionBase& Collection)
{

}

It does not compile and returns an error: Unable to find ‘class’, ‘delegate’, ‘enum’, or ‘struct’ with name ‘FSubsystemCollectionBase’. Even if I directly include “Subsystems/SubsystemCollection.h” file, the error still remains, though in my understanding it should not happen in the first place. If I do not override Initialize(), everything is compiling and working perfectly. Would be happy to hear any ideas. Cheers. :slight_smile:

2

As it turned out, second possibility happened to be true: I am really dumb. I removed UFUNCTION() from declaration and everything went green. Thank you anyways, don’t be me. : )