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Does the number of hulls in collision affect performance?

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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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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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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.


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

Thank a lot for your help

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