Oh I think you talked about this issue before. Definitely remember commenting on something like this before.Almost exactly a year ago I redid the platforming for Adventure, but I'm not sure I posted anything publicly about that.
And technically 3.0 has always had a thing called "relative_velocity." Basically it's physics grids like in Star Citizen. Players moved within the physics grid independently of how the grid was moving. Not so long ago I depreciated it since I cut the big feature using it, so maybe that's what you're thinking of, but again I'm not sure I posted about it.
