I use your 1.16.x branch and observed that it is still on 1.15.2-31.0.1 !
So I changed to a real 1.16.x

But during solving issues with this, I run into this non-understandable flag issue.
Do you have a clue how to solve this ?

I made a pull request to give you the chance to follow #22

From the parameter types it's either getFaceOcclusionShape() or isSolidSide() ?
Additional: give it a meaningless name flag causes questions

A

Which one?

B

Is there a way to search for the mapping func_224755_d to a method name ?