Disappearing fragments Destructibles and alternative for World Support

Development World Creation
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1

Hey there,
I’ve some bugs with destructibles in UE4. I`m working on a destructible Map the last few days, and there are some issues (?) that I do not understand…

First Point:
I`ve built a house with destructibles…The destruction worked well, so I started copying the House a few times…But after doing that, the destructibles does not spawn fragments any more…After a few shots against the wall the fragments disappear and nothing drops fragments anymore…Is that a bug of the Engine or did I made something wrong…? I saw Videos on Yt where people had hudge buildings completly destructible…
And no, my Debris Timeout is set to 20 seconds, so that should not be an error…
Hope Somebody could help me with that…

Second Point:
The Roof of my Building lays on the Walls, so there is no World Support available…Thats why the Roof sometimes gliches away when I hit it…Is there a way to fix that…?

Hope somebody can help me…!

And sry for my bad english, I’m a german student…:expressionless:

If it should be necessary, I can upload pics and videos.

Thanks in advance!

2

So, on your first point, Unreal currently has a limit on how many Destructive Mesh chunks it will support at once (somewere around 10,000 parts). You can change this inside the Apex files, but I wouldn’t recommend it if you plan on releasing your game publicly- even the faster gaming computers will struggle with it.

Second point, if your hitting that chunk limit, DMs just start to fail over; lossing things like support which need to be calculated every physics tick.

I would suggest pulling back on an entirly destructible enviroment to reduce your DM chunks and build some ‘ruinned’ buildings as static meshes, and putting DMs on them to have them look ‘not ruinned’. That way, when a DM (say a wall) is destroyed, it will look like a destroy building that is still standing.