Box trace by channel - How to ignore set of actors?

[MrA16R]

I’m making a base build system, and I’m trying to make it so the collision between the walls and stairs are ignored.

As you can see in this screenshot, I can’t place the walls behind the stairs because they’re colliding:

I don’t know how what’s the best way to go about doing it.

My base builds are listed in a DataTable like this:

[illspiritx]

Are you storing references to each piece’s actor in a main building actor of some sort to track which piece belongs to what? If so, you could pipe those into an array to feed the ignore pin on the overlap.

Another option would be to use gameplay tags, and on the out hit of trace you could do branch and check if the hit actor has a tag you want to ignore. For instance, if you want stairs to overlap walls, tag the wall with IgnoredByStairs or some such, and have stairs look for the tag on the out hit and force a false return.