How to make Vactubes for Portal 2 in hammer.

Overview

Ths tutorial will teach you how to make vactubes in Portal 2.

Making basic shape

First start of making basic shape of your vactube.

Here is list of useful models:

• vacum_entrance_a.mdl
• vacum_flange_a.md
• vactube_connectro.mdl

Making items inside

First start from making path_tracks. Dont forget to turn on teleprot to this path in first path track.

Now create 2 prop_dynamic_overrides, and 3 brushes in same place. Convert two of them to func_rotating and 3rd one to func_tracktrain.
Parent prop_dynamic to func_rotatating, func_rotating to 2nd func_rotating, and then to func_tracktrain. Set track train speed to 450-600, height above track to 0 and distance between the wheels to 0. Now go to flags and check allow roll (z-rot). Now open both of func_rotatings and in flags check x axis in first and y axis in 2nd. Set rotating speed to 150.

Now set 2 diffrent models to prop_dynamics_overrides. Create logic_auto and give it outputs.

Create logc_case.
Add outputs

Now in last path_track of your tube create outputs:

Making Gel Inside

Create info_particle_system. Set start active to yes. Chose particle system name to bloob_curve_blue/orange/white. How place it inside the tube. Create info_target. Put it somewhere insde tube. Go to info_particle_system and set control_point_1 as info_target. Create ambient_generic inside the tube. Set sound name to world.gelflowherolp, volume to 10 and max audible distance to 1250.