I’m trying to add an UInterface in C++ that has a bunch of BlueprintNativeEvent functions, but cannot get it to compile no matter what. Given the following code:
SelectableInterface.h
#pragma once
#include "CoreMinimal.h"
#include "SelectableInterface.generated.h"
// This class does not need to be modified.
UINTERFACE(Blueprintable)
class USelectableInterface : public UInterface
{
GENERATED_BODY()
};
/**
*
*/
class GAMEJAM2018_VGDC_API ISelectableInterface
{
GENERATED_BODY()
public:
/**
* Called when the player selects/deselects this actor
* BlueprintNativeEvent, so you can override in Blueprints. Remember, in
* C++ this means the .cpp file should only have
* UpdateSelection_Implementation(...) !
*/
UFUNCTION(BlueprintNativeEvent, Category = "Selectable")
void UpdateSelection(ESelectionState State = ESelectionState::Active);
};
SelectableInterface.cpp
#include "SelectableInterface.h"
void ISelectableInterface::UpdateSelection_Implementation(ESelectionState Type)
{
UE_LOG(LogTemp, Error, TEXT("ISelectableInterface::UpdateSelection() not implemented/calls super!"));
}
I get the compilation error
SelectableInterface.h(34): error C2039: 'UpdateSelection_Implementation': is not a member of 'ISelectableInterface'
SelectableInterface.h(33): note: see declaration of 'ISelectableInterface'
with line 34 being the GENERATED_BODY() in ISelectableInterface.
I’ve tried not defining the function in .cpp at all, I’ve tried dropping _Implementation off the definintion, I’ve tried adding BlueprintCallable, I’ve tried overriding it in another class, I’ve tried a complete rebuild; each time, I still get the same error.