General Issues with Destructible Meshes
I have been more or less playing around with destructible meshes for the past few days, and have created my own assets in 3ds Max. My goal is to have a few destructible assets, with which I can create a building that I can then destroy. I used Nvidia's PhysX Lab (1.3) to create my destructibles.
The problem I have is, that whenever I try destroying something using the FPS Blueprint projectile (modified to explode on impact) a few pieces break off the mesh, the mesh then wakes up and just falls over, and I can't cause any further damage to it, as the projectiles just bounce off. I can also run into the mesh before it is hit by a projectile, and cause it to fall over easily. I have tried meshes with 2 depths (shown in the example below) and 3 depths, with the same results.
A few screenshots to give an idea of what is happening, as well as the settings I used:
The modified projectile was made using this tutorial: Unreal Engine 4 Tutorial - Explosive Projectile
I hope I didn't miss any important information to post here.
Any help is appreciated a lot, thanks in advance!
Sorry for the late answer. I hope it's not to late to get some more help!
The problem of the wall falling over after the first hit was fixed by disabling Simulate Physics and changing the colission preset on the mesh to Destructible.
So, my destructible meshes almost work now! I'm using these settings.
I have also created a simple line trace weapon thanks to a couple different tutorials I found on the forums and Youtube. The weapon applies 500000 radial damage on a very small radius of 25. I want to be able to "chip away" at the mesh, and it seems to be working quite nicely so far.
The problems that are still left right now are, that I can damage the mesh heavily just by running into it. It was suggested to me that a high Impact Resistance may fix that, but that does nothing. Also, whenever I cause a lot of destruction quickly, all the fractured pieces disappear and shooting the mesh simply removes more and more of the destructible, causing no new fractured pieces to fall off.
Do you have an idea on what I could do to fix those things? Again, any help is highly appreciated! :)
answered Nov 24 '14 at 08:41 PM
Hi Sir Crimson,
Can you give the following settings a shot and see if that works for you?
First off, you need to set the default impact damage depth. Since it was set to -1 it wasn't reacting to any impacts even though you had set a impact damage of 7. I left mine at 1 though.
The main thing you want to adjust here and tweak to your benefit is the damage value.
As a note, I did not use the projectile with the yellow ball. I used a line trace and added an impulse. Because of this there may be some values that need to be adjusted in the damage and impact sections, but this should be enough to get you started.
Let me know if you have any questions. :)
answered Nov 03 '14 at 10:01 PM
Tim Hobson ♦♦ STAFF
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