"Overloaded member function not found in" error for BlueprintType Interface function

Development Programming & Scripting UI
, ,
1

Hi There,

I’ve run into an issue which I’m struggling to understand.
When I try to compile the following code I get the error:

AlsCppV4\ALSInterfaces.gen.cpp(535): error C2511: 'void IALSCharacterInterface::GetCurrentStates(TEnumAsByte<EMovementMode> &,EALSMovementState &,EALSMovementState &,EALSMovementAction &,EALSRotationMode &,EALSGait &,EALSStance &,EALSViewMode &,EALSOverlayState &)': overloaded member function not found in 'IALSCharacterInterface'

Here’s my code:

UINTERFACE(BlueprintType)
class ALSCPPV4_API UALSCharacterInterface : public UInterface
{
	GENERATED_BODY()
};

class ALSCPPV4_API IALSCharacterInterface
{
	GENERATED_BODY()

public:
	
	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterInformation")
		void GetCurrentStates(
			TEnumAsByte<EMovementMode>& PawnMovementMode,
			TEnumAsByte<EALSMovementState>& MovementState,
			TEnumAsByte<EALSMovementState>& PrevMovementState,
			TEnumAsByte<EALSMovementAction>& MovementAction,
			TEnumAsByte<EALSRotationMode>& RotationMode,
			TEnumAsByte<EALSGait>& ActualGait,
			TEnumAsByte<EALSStance>& ActualStance,
			TEnumAsByte<EALSViewMode>& ViewMode,
			TEnumAsByte<EALSOverlayState>& OverlayState
		);
	

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterInformation")
		void GetEssentialValues(
			FVector& Velocity,
			FVector& Acceleration,
			FVector& MovementInput,
			bool& IsMoving,
			bool& HasMovementInput,
			float& Speed,
			float& MovementInputAmount,
			FRotator& AimingRotation,
			float& AimYawValue
		);

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterStates")
	void SetMovementState(EALSMovementState NewMovementState = EALSMovementState::None);

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterStates")
	void SetMovementAction(EALSMovementAction NewMovementAction = EALSMovementAction::None);

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterStates")
	void SetRotationMode(EALSRotationMode NewRotationMode = EALSRotationMode::VelocityDirection);

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterStates")
	void SetGait(EALSGait NewGait = EALSGait::Walking);

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterStates")
	void SetViewMode(EALSViewMode NewViewMode = EALSViewMode::ThirdPerson);

	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterStates")
	void SetOverlayState(EALSOverlayState NewOverlayState = EALSOverlayState::Default);
};

I’m not sure why it would be complaining about a function overload when these are just interface declarations?
FYI the referenced enums are also declared in C++, and the header is referenced in this file. The intention behind the “GetCurrentStates” function is to be used in Blueprints (hence the pass by ref).

Any help would be appreciated.

2

Looks like the generation of the function implementation failed during the build process. Had to change the function signature to the following:

// Interesting, ALSInterfaces.gen.cpp generated incorrectly if enums used TEnumAsByte. Only PawnMovementMode required this.
	UFUNCTION(BlueprintCallable, BlueprintImplementableEvent, Category = "CharacterInformation")
		void GetCurrentStates(
			TEnumAsByte<EMovementMode>& PawnMovementMode,
			EALSMovementState& MovementState,
			EALSMovementState& PrevMovementState,
			EALSMovementAction& MovementAction,
			EALSRotationMode& RotationMode,
			EALSGait& ActualGait,
			EALSStance& ActualStance,
			EALSViewMode& ViewMode,
			EALSOverlayState& OverlayState
		);
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My lord and saviour <3