I’m making a simple worm game, the body of the worm is a growing array of static mesh components (cubes) and the collider (a box component) is always re-parented to the last element of the array (the head).
My idea is, if the collider hit a static mesh component that is not it’s parent (the head), then it means the worm hit his body so is game over.
Problem is, I can’t get my Collider to generate Overlap Event with the other static mesh components inside the same Blueprint… furthermore, as you see in the image below I am even getting a warning, which I don’t quite understand.
How should I do in order to have my collider generate those overlap events? 
You can use “Get Overlapping Components” from your collider (BoxCollision) and check if you are overlapping your own Mesh. Also, you can check if the owner = self.
The warning sign will display a message if you put your mouse over it for a sec. I guess the problem is that the OtherActor input will never cast successfully to a StaticMeshComponent, because it is an Actor class ref.
The problem with this is that the check has to happen in Event Tick.
I want for the self overlap to be detected by default thus firing EventActorBeginOverlap, and then I check there, if is a component other than the head. Is this feasable, or EventActorBeginOverlap cannot be triggered by components of the same Actor?
Ok, I think I see the problem, I had the mesh components set to “Generate Overlap Event” and “No Collision”, I’ve changed it to Overlap All and now it works :S