How to get if a physical material is in radius?

Hi, I’m trying to make it so an “electricity actor” can jump from metal object to metal object. I have a metal physical material, and I want the electrical actor to be able to sense if there are any metal materials in a certain radius. How can I do this? Any help is great. Thanks!

Make many traces (lines/spheres/etc) in many directions and get Phys material after every trace.

Another option - is to use custom actors that defines “metal” surfaces, so you can trace multi sphere and get all this actors in hit result. It should be some simple actors with collision boxes or so.

There was just a great live stream recently. Alan had some cool lightning going. You might want to use that as a reference. It’s here: Creating Complex VFX | Live Training | Unreal Engine Livestream - YouTube