Creating a Portal Radio

Introduction

This tutorial will show you how to create the Portal radios that usually play the Still Alive song.

Construction

1. Create a prop_physics_override entity and set its World Model to radio_reference.mdl. Place it where you want in your map.
2. Name the radio radio_1.
3. Create an ambient_generic entity and place it near the radio. Name it radio_sound_1.
4. Make the radio_sound_1's Sound Name Portal.room1_Radio. Make its Source Entity Name radio_1.
5. Make sure none of radio_sound_1's flags are checked.

The radio is now complete!

Theory

The radio should be playing the Still Alive music which should fade out and in depending on your distance from it.