Create Control Bus Mix Asset from within BP

[Babymaster3000]

Hi everyone,

in BP I can call Create Control Bus Mix, how can I turn the resulting object into an asset to be stored on disk? Calling Create Asset asks for an Asset class (which I assume is Sound Control Bus Mix) and a Factory instance. The latter I have no idea how to create, although it is there somewhere.

Use case is I want to create modulation presets which I can interpolate a la INA GRM tools. I figured the Control Bus Mixes would be the way to go here.

Is this the right way to do it anyway?
Greetings,
Christoph

[Babymaster3000]

I’ve dug around and found the FEditorFileUtils::SaveAssetAs() C++ utility function, which was really easy to put in a BP function library

In your MyGame.Build.Cs:

PrivateDependencyModuleNames.AddRange(new string[] { "UnrealEd" });

In your project create a new BP Function Library C++, with:

#include "FileHelpers.h"

...

UCLASS()
class UMyUtils : public UBlueprintFunctionLibrary
{
	GENERATED_BODY()

public:
	UFUNCTION(BlueprintCallable)
	static void SaveToDisk(UObject* Asset);
};

Then in the CPP it’s as simple as:

void UMyUtils ::SaveToDisk(UObject* Asset)
{
	TArray<UObject*> Assets;
	Assets.Add(Asset);
	TArray<UObject*> OutSavedAssets;
	FEditorFileUtils::SaveAssetsAs(Assets, OutSavedAssets);
}

It will produce a file save dialog and generally do what it says on the tin. How refreshing!