Play and understand UE's collision detection

There are three major detections, namely profile, objects, channel

Channel takes effect

Create a new smttrace
default response in the Trace channel and change it to ignore (I tested that if it is not changed to ignore, it will cause the collision to be preset as the default and it will also be responded)

How objects take effect

Assuming there is an smt machine, set the obj
new description file for the smt machine
and check smttrace

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code show as below

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New collision object channels

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Then create a new preset (description preset)