Removing / Adding Object Collision Channels changes their order

General Feedback & Requests
, , , ,
1

Hi

This is both a feature request, and a bug report.

I’ve long been annoyed at the current method of setting up Collision Channels, but it’s not really something you do that often. However I’ve recently ran into an issue where I needed a collision channel to be at the top, or it wouldn’t work correctly. And I stumbled upon an annoying bug trying to “re-order” the list manually ( which is FAR from ideal )

I’ll get to the feature request first:

  • Allow us to manually re-order the Object Channels and Trace Channels list similar to other lists in Unreal Engine.

Then to the bug:

Reproduce:

  • In any project, ensure the Object Channels is empty, then create 3 object channels.
  • Then remove the first one from the list.
  • Create a new Object Channel.
  • Then remove the second one from the list ( center one of 3 )
    – You will notice that the top and the bottom entry will switch places as soon as the second entry is deleted.

Video:

I bet it’s a bit of a niche one, but this really annoyed me when trying to make them in a specific order lol.

There are other scenarios with this where they re-order themselves, this reproduce was just the easiest and most consistent one i stumbled upon, but I had it happen while Adding a new one too, where the newly added one would be added to the top instead of the bottom etc.

Hope we’re allowed to re-order them manually soon…

2

Could you elaborate on this? To the best of my knowledge, this is not how things work at all. The order is purely visual and has no impact on functionality whatsoever.

Is there anything reproducible to go by?

1 Like
3

Hmm, you’re right. I was basing that assumption on an asset Im using ( WaterlinePro ) and I guess it queries some Collision Channel as it seemed to react differently depending on what is on top. But after further testing with that asset in this scenario, it seems more random. There is no consistency to it. So I guess I don’t need to worry about that then.
Thanks lol.

But it would still be nice to be able to re-order them even if just visually :slight_smile:

1 Like