Beam Trigger Help

[crumbleshake]

I'm trying to make a Portal 2 themed map and I can't work out how to make a trigger that can be activated when hit by a beam. I'm making one of those boxes that reflect beams. The beam works but I don't know how to make the trigger. How can I do it?

[Firegod522]

Set the Filter Name to a [url=http://developer.valvesoftware.com/wiki/Filter_activator_name]filter_activator_name[/url] maybe?

[crumbleshake]

thanks, I'll have a look next time I'm on hammer

[crumbleshake]

What kind of trigger do I need to use? and what output?

[IronPhoenix]

I think the portal 2 boxes will use custom entities. I'm not sure if there is a valid way to replicate the effect. On the whole, triggers are not activated by entities passing into them, such as the beam of an env_beam.

[Firegod522]

This is true, but somebody has remade them. I tried, but it didn't go completely well.

[crumbleshake]

I know that Reepblue managed to do it and there's also a Portal 2 Mappack that had them

[Firegod522]

There is? Link me please.

[crumbleshake]

[url]http://www.moddb.com/mods/aperture-dj-vu/downloads/portal-2-mappack[/url]
It's not very long

[editline]06:51PM[/editline]

WOuld it be possible to make a trigger that goes on the wall? Would that be easier?

[Firegod522]

I didn't see any cubes that reflected the lasers. The lasers bouced off mirrors is just good entity placement that was parented to the plats. They used env_laser.

[crumbleshake]

Ok, I've worked it out. I've stopped on the cube for now and have instead just made a button that is activated by damage and when the beam is put through a portal it should activate the button. But annoyingly there's something about beams that makes it so that they don't damage anything after being through a portal. How the hell do I make it so that it keeps it's damage?

[Firegod522]

You mean like this?
[hd]http://www.youtube.com/watch?v=6jxgCP0eQxo[/hd]

I used trigger_hurt

[crumbleshake]

how did you get the trigger hurt on the beam?

[Firegod522]

Parented it to the portal.

[crumbleshake]

how do you do that?

[Firegod522]

:doh:

Pre place a portal, and have it off. Then name it.

Make your trigger_hurt where the beam will be, through your portal.
Set the trigger_hurt's parent to the pre placed portal.

[crumbleshake]

Now, I've been looking for ages. What should I use as a trigger on the portal to activate the trigger_hurt on the other. I know I should use something with an OnTakeDamage output like a func_physbox but I don't know how to make one of those so that the player can go through it, the beam can go through it but it still takes the damage.

[MDave]

Hmmm. Laser reflecting cubes. I got a great idea! You can make beam to trigger the cubes OnUser(1-4) (maybe?).

So there is the basic idea:

(I am too lazy to draw it sorry. So I am gonna use an ascii art :) )
So the basics:

X-------------------------------¤---------------------x
funch_brush (cube) env_beam (laser) info_target (laser end point)

1. Create a cube (Can be a model etc.)
2. Create an info_target far away from the cube. ( Make sure that the cube faces to the info_target! )
3. Create an env_beam and put it beetvee the cube and the info target.

Then set the env_beams two end points. ( 1st the cube second is the info target ). After that parent your info target to your cube.

Entity propertys:

Cube:
Output:
OnUser1 = laser TurnOn

Laser:
Output:
OnTouchebByEntity !activator FireUser1

So basicly. If a laser hits your cube it activates its self laser, so it looks like that the cube reflected the original one.

The only problem of the concept that tha env_beam dont have an Output for OnTouchEndedByEntity or something like that so ths cubes laser wont switch of.

Hope it helps you somehow.