Question regarding 3d floors

[Alter]

Graf, it's possible to draw a 3d floor in which you can walk in(on other 3d floor as floor) and sides (like fences for example) would be impassable? without fake bridge hackery

[smg m7]

Just set up the floors like usual. It certainly works, as I've done it before. If you need two floors just set up two control sectors with the same tag.

[KeksDose]

Just like smg m7 said. Set up your normal 3D floors like a "room" to walk in. There is something like a 3D floor to walk in too, it's the one without collision checks. Here's an example.