I’m writing a Blueprint callable wrapper for the AssetManager, and I ran into an issue with my delegate/event setup. I accept a singlecast delegate from blueprint callable function, bind it to a multicast delegate, and broadcast it when the operation finishes. I’ve done this with a few different objects.
However for some reason it doesn’t want to play nice with my TArray<UObject*> parameter.
Here’s my declaration:
DECLARE_DYNAMIC_DELEGATE_OneParam(FDataAssetProviderOnAsyncLoadAssetBP, TArray<UObject*>, DataAssetType);
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FDataAssetProviderOnAsyncLoadAsset, TArray<UObject*>, DataAssetType);
UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class DEVILDJ_API UDJDataAssetProvider : public UActorComponent
{
GENERATED_BODY()
public:
UFUNCTION(BlueprintCallable)
void AsyncLoadAssets(FDataAssetProviderOnAsyncLoadAssetBP Delegate);
//...
However in the editor blueprint, I can’t hook up an Event to the actual function call. I get an editor compilation error:
This is even when I drag out from the pin directly. I’ve recompiled everything to double check it wasn’t some cached signature. So the error message is wrong here.
I can work around this by removing the parameter and having the array accessible directly on the object, but is there a reason why this particular implementation doesn’t work?