PhysX Lab to UE4 collision problems.
Hello! I am trying to create a destructible asset using PhysX lab and using it in UE4. However after I export as .apb and import the mesh, when I play and shoot the mesh, it explodes randomly. This is not the issue however, the issue is that the collision of each chunk is not perfect, UE4 has sort of made a box around each chunk and not any details. This is why I think the chunks are standing on its sides and having weird physics. Note I am using the FPS example on a new level. I used a fracture map to fracture my texture in PhysX Lab. I am using UE4 4.2, im not sure if updating to 4.3 will help but it might, let me know! Im also not sure if it is part of my settings that is ruining this, or it is a bug. I have tried turning up the global gravity but the chunks just drop when shot, all at once and it doesnt fix the collision either. Also note,I have tried most methods found on the answer hub to resolve this, nothing worked (changed impactdepth, various blueprints, etc.). I also have noticed that when i select a chunk in the destructible editor (preview depth 1) it is a box around it, not conformed around the chunk, the blue outline that is. I hope this get resolved soon, thanks in advance!
I've tried creating a new DM with the settings you have displayed and it is not behaving the way yours does. There are a couple of possibilities here: most likely, either your mesh itself is being exported from Maya incorrectly or you have some mixture of settings in PhysX Lab that I'm not seeing that is causing this. I've messed around in PhysX for a while and wasn't able to come up with anything that would do this, so my guess is that it has something to do with your export process from Maya.
The asset you attached earlier needed to be scaled up significantly for me to test it properly, and scaling it caused some very unusual behavior. I'm wondering if this happens for you as well? If you create your mesh using centimeters as the base unit in Maya, and export it as an FBX, do the same problems occur?
Otherwise I'm not certain what could be causing this. If you'd like, you can send me a test mesh and I can attempt the same process in PhysX Lab so we can maybe narrow it down to that as the root of the problem. If you do, please send it exactly the way you have when you import it into PhysX. Thanks!
answered Jul 21 '14 at 08:09 PM
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