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Does the number of hulls in collision affect performance?

alt text

So if I set the Max Hulls to 24 instead of the default 4, how much does it affect overall performance?

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asked Mar 27 '15 at 11:15 PM in Using UE4

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Valachio
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As a general rule the simpler the collision the better performance you will get out of it. You should really consider importing your meshes with a custom collision as the engine rarely auto-generates good collisions.

You're not going to notice any drop in performance from 1 object with lots of collisions but you will notice it if you have tons of objects with poorly optimized collision.

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answered Mar 27 '15 at 11:29 PM

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KrunkFu
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avatar image Valachio Mar 28 '15 at 12:32 AM

What software would you recommend I use to create collisions

avatar image KrunkFu Mar 28 '15 at 12:53 AM

Whatever modeling package you use to create your assets. I use blender becasue its free but you could easily use any other package that allows FBX exporting.

Here is the unreal documentation for the static mesh pipeline and collisions: https://docs.unrealengine.com/latest/INT/Engine/Content/FBX/StaticMeshes/index.html#collision

This video will show you how to export collision from blender but the workflow is pretty much the same for every other program.

https://www.youtube.com/watch?v=TTsAYpqHU-c

avatar image Valachio Mar 28 '15 at 12:55 AM

Thank a lot for your help

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