Moving/Extending 3d Bridges?

[ArchAngel777]

I'm trying to create a 3d bridge that moves when the player activates a switch. However, I can't find any methods for doing so. As far as I know, 3d floors cannot move horizontally, only vertically. And polyobjects don't seem like the right solution either. At least with polyobjects I can get something to extend, but than there are rendering glitches and/or collision problems likely due to polyobjects not really being 3d. I tried some combination of the 2 and that resulted in really weird glitching haha. Has anyone attempted this before or have any ideas as to how to achieve something like this?

I thought of a temporary solution, which would be to add a tag to a sector that turns it into a 3d floor, but I don't think ACS has any functions for adding tags to sectors unfortunately. So I'm at a total loss right now.

[axredneck]

3D models maybe?
(Sorry for my bad English)

[RKD]

Maybe this can help you achieve that result?

[ArchAngel777]

Maybe this can help you achieve that result?

Wow that's incredible. I'll definitely be checking that out. Thanks for the suggestion.

[RKD]

Hope it helps!

[Fragger]

A much simpler solution, using ACS, decorate and 3d models. It doesn't carry players while it's extending, but it does once it's fully deployed.
https://youtu.be/qe1-aE7XzCU

[Kappes Buur]

While using models is more versatile, see FishyClock's work
it can be done simply with 3D sectors and ACS.