Why no bReturnFaceIndexOnMove in UPrimitiveComponent?

Development Programming & Scripting C++
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1

UPrimitiveComponent allows you to control several FCollisionQueryParams fields via member variables (e.g., bReturnMaterialOnMove). However, UPrimitiveComponent provides no member variable to set FCollisionQueryParams::bReturnFaceIndex. Because of this, it is not possible to have the FaceIndex set in the FHitResult when the component is moved.

I created a USphereComponent sub-class that overrode InitSweepCollisionParams and set FCollisionQueryParams::bReturnFaceIndex to true and then was able to get the FaceIndex in the FHitResult on component move.

I was wondering if this was left out of UPrimitiveComponent intentionally or if it was an oversight. If intentionally, why?

2

I made a pull request to add this functionality It is straightforward, but I’m curious to know if it was left out on purpose for a reason I’m unaware of.