Vacuum Tube Effect?

[=[Ga]= AutoDMC]

Get on TF2, play Blackmesa, and jump into one of the two air vents near point A. They'll suck you up like a vacuum tube and deposit you elsewhere. In the older version of BlackMesa, if you tried to walk down the shaft you hit a wall of force that kept pushing you back.

Unfortnatly, I can only think to call this a "vacuum tube effect", so I've been unlucky in finding a tutorial for this type of "elevator shaft".

Any clues?

 

[Rogue Sniper]

trigger_push

Its a brush entity

 

[Ice hearted killer]

oww that can be usfull thanks rogue i might use that,

 

[5starGeneralAlphaSnake]

could you use like 20 teleporters too?