Create a Particle Shockwave Tutorial

It seems that this tuorials is flawed somehow,
especially part 4. Set up the shockwave rings

I found out that the first expression is missing a bracket
((clamp($FF, 2, 3*20+20/2)%20)<=1) <—(added this one)

Maybe the second expression is also errenous
chf(“../shockwave_emitter/impulseactivate”, $F-1) ???

It never works the way it's supposed to, there are no waves generated.
Any clues ??

Vertex23
Create a Particle Shockwave Tutorial

It seems that this tuorials is flawed somehow,
especially part 4. Set up the shockwave rings

I found out that the first expression is missing a bracket
((clamp($FF, 2, 3*20+20/2)%20)<=1) <—(added this one)

Maybe the second expression is also errenous
chf(“../shockwave_emitter/impulseactivate”, $F-1) ???

It never works the way it's supposed to, there are no waves generated.
Any clues ??

Hey Vertex, in case you haven't already been told, one thing I did was I wrapped the expression using if as such:

if (((clamp($FF, 2, 3*20+20/2)%20)<=1), 1, 0)

Let me know how that works out for ya. You can do an exhelp on if in the textport to see what I did.

Hello Vertex23,
I tryed that tut and it works…there was a bracket missing in the first expression but the second one is ok. Maybe you forgot to rename source1 to shockwave_emitter…

Cheers,
Romulus C.

Thanx for answering guys!

I know now i made a mistake by not connecting the shockwave emitter to the attractor.

Funny, now when i insert the first expression in impulse activation of the emitter it all seems to work, the waves are generated in three pulses, but when i insert the second expression in the attractor activation, the particles are just generated on the disk area.
If I leave it at 1 or constant() it seems to work ok. Strange, isn`t it ?

where can one find this tutorial?

thanks! :roll:

Hello, you can find this tut in Houdini's Help,
Tutorials->Effects->Particle Motion