Destruction physics bug
Pretty straightforward bug:
On the right 3 starter content boxes with physics on, on the left 3 starter content boxes converted to destruction meshes with physics on. Everything is placed perfectly in the grid, no touching. This also happen when not awake, it just happens then as soon it is set wake.
This bug exits since 4.8! When I converted my Where Is My Hammer game some time ago to a new version most of the world basically exploded on start because of this bug. All meshes there are destruction meshes and it results in a chain reaction. I have hoped it would be finally fixed but I guess not, Is this on your to fix list and when I can expect it to be fixed? I would just stick with 4.8 but I want to do something with VR and destruction which is pretty much impossible in UE4 currently! :(
Edit: Looks like it is only that extreme when scaled up, those boxes are scaled up x2. With x1 it only happens a tiny bit.
This isn't a bug, This is part of how Destructibles collision hulls are generated at the moment.
If you use the CVar PXVIS Collision you will be able to see the collision hulls that are generated. They are not very tight bounding to the box itself and there is no adjustment currently for this, however, IIRC there is a ticket in for this to be addressed when Destruction get it's well-deserved overhaul in the future. The slight movement you see is the destructible now being woken up to simulate physics and the collision hulls push back from intersecting each other.
There are no plans to work on Destruction aside from crashes and regressions in the near future as far as I'm aware though.
answered Mar 23 '16 at 01:20 PM
Tim Hobson ♦♦ STAFF
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