How to expose custom ActorComponent to Blueprints?

Development Programming & Scripting
1

I have some logic that controls the movement of an actor (e.g. its speed). My approach is to make this an ActorComponent so I can add the behavior to an existing actor.

Question 1: Is this correct?

. I would like to make use of this component not in C++ code, but in Blueprints. However, I somehow can’t expose this component to my Blueprints. My understanding is that I should be able to add this extension using the “Add Component” button on the BP’s Components tab.

Question 2: correct?

But my ActorComponent doesn’t show up in the component search.

Final question: What do I have to do to expose it? Specifiy certain macros and attributes?

Thanks for your help!

2

Hi Rastar,

to expose your custom component to your blueprints you have to set the meta data in C++.
For example:

UCLASS(meta = (BlueprintSpawnableComponent))
class UMyComponent : public UActorComponent
{
	GENERATED_UCLASS_BODY()
};

Hope that helps.

Daniel

3

Yes, that did the trick - thanks!

4

Apparently as of 4.7 you also need to have “ClassGroup=SomeGroup” or it does not show up in the list…