Chasing Laser

Chasing Lasers are a custom element that is not shipped with Portal 2. It's basically a Thermal Discouragement Beam that follows the player wherever he goes.

Creating Chasing Lasers

0.Create a new map with a basic room

1. Create a box with the minimum width and height of 64 x 64 and make it a func_tank with the following settings:

Property Name	Value
Name	Tank
Pitch Rate	30
Pitch Range	90

2. Create an env_portal_laser and apply with the following settings:

Property Name	Value
Parent	Tank

3. Create a logic_auto and give it the following Outputs:

Property Name	Value
My Output	Target Entity	Target Input	Parameter	Delay	Only Once
OnMapSpawn	Tank	SetTargetEntity	!player	o.oo	No

4.Done

Theory

In the last steps you created a laser spawn and "welded" it onto a brush that is following the player everywhere around. The Tank will follow the player even he can't be seen. The laser is non-lethal, but that can be changed in the env_portal_laser settings

Bugs

• When you walk up to the laser it can't damage you