Hi miguline,
There are a two ways you can do this right out with destructibles.
- FBX Chunks imported in your DM. I did a simple setup and showcase for this in this post: https://forums.unrealengine/showthread.php?56777-Photons-Be-Free-Mini-tutorials-and-other-curiosities&p=207604&viewfull=1#post207604
This one is really easy and you get the most control with different meshes, although it is only a single depth layer.
Here is how you can set this up.
I created this in 3Ds by creating a my Wall Mesh. Next I created the stone/brick that would make up that wall and placed them along how I would like.
I exported both these as separate FBX files.
Once you’re ready Import the base wall mesh into UE4. Then right click and create destructible. Use the option for FBX Chunks in the tool bar. Then you can select the FBX that will be the stones/bricks.
You will now have your stones setup as your DM fractures.
This is the result for my simple setup:
[video]https://www.dropbox/s/13kjwooglntedl2/FBXChunks.mp4?dl=0[/video]
If you want the chunks to break away like in my video you will need to set the support depth to 1.
The only two settings I changed from defaults were Support Depth and World Support.
- You can use a texture to generate your own cutout for fracturing using PhysX Labs standalone app or DCC plugin for and Maya as well.
Take a look at the APEX Destruction with PhysXLab: Cut-out Fracturing video. https://developer.nvidia/apex-destruction-physxlab-tutorials
?v=L6Csr4JucWU
The fracture will be based off the cut-out texture you provided, but it’s doable there as well.
If you have any questions or need further help feel free to ask! 