Niagara laser collision

[Marmartine]

Hello,

I’ve been trying to make a laser using niagara that would stop when hitting a collision, but so far it’s just not working. I’ve watched several tutorials explaining hwo to make a laser with collision, but they didn’t help. I currently have this already :

but for now, the laser endpoint is stuck to the world center, due to the Bem End being at 0;0;0. If I change it, I justend up with a laser that ends at a certain point, without any form of collision. Does anyone know what to do to fix that ?

[Shunitzo]

@Marmartine

without any form of collision

What do you mean by that?
Are you making some sort of a trigger laser? Or a continuous fire weapon?

[Marmartine]

It’s a laser pointer. Once triggered it has to stops when hitting a collision, which is what I’m failing to do so far.

[Shunitzo]

Does debug draw line works right?

[Marmartine]

It does, without any issue. It detects when there’s a collision properly.

[Shunitzo]

Why do you spawn system as Pointer Spawned R, but setting param for NS_Laser?

[Marmartine]

Sorry for the delayed reply.
I’d say because it affects the laser itself before the pointer. But regardless, changing the variable for the Pointer doesn’t change a thing.

[Shunitzo]

Can you send me ns_laser in pm? I’ll try to remake it to test it out

[Marmartine]

I don’t really know how to use pms here, but at least I can give you all the parameters for the vfx

(sorry for the poor quality)
It’s a Dynamic Beam, too.
The 2 user parameters have the default value (0;0;0 for BeamEnd, white for Color)

[Shunitzo]

you can upload file to google drive and post link here

[Marmartine]

There you go

NS_Laser.uasset

[Shunitzo]

Looks like my UE is older, can’t open file
I’ll update it and see what I can do.

[Marmartine]

My project is under the latest 5.4, yeah.

[Shunitzo]

Found your problem
You are using local space for beamend but giving it world space
go to laser, beam emitter setup, and tick absolute beam end

[Marmartine]

I changed a few things and started testing other stuff with the laser… The issue I posted at first happened while the laser was set to absolute beam end. Atm if I try it I can move freely the begin point linked to the controller, but the end point is locked at whatever coords there are for the BeamEnd parameter. I still don’t know how to make it move as I want.

[Shunitzo]

works fine for me

[Marmartine]

Well, it finally worked. All it as missing was actually to put the Index of the select node into Return value. That took way too long just for that. Thanks a lot for the help.