Timer

[wildon]

hello,

how i can create a timer in houdini? 

 

i want to detect when one attribute became true, 

keep the frame one action during a certain amont of time 

after he came true and stop. 

 

 

for exemple if a have a RDB when he it a surface, he emit dust during five frame after the impact frame. 

 

 

 

 

[Doum]

Maybe you can emit particles using the impact attribute and give them a lifespan of 5 frames ?

[wildon]

off course i can do it. 

but if my particles live 5 frames my emiter is active all the time.

i need to reset my impact attribute a certain amount of time after the frist impact.  

i found one solution but is not really light ... 

[GallenWolf]

5 frames later? Why not just bake out your impact data, then timeshift it by 5 frames? 

[cubiccube]

Here's a simple setup for a timer inside a simulation context. I like using a "state" attribute where 0 = ready, 1 = active, and -1 = dead. This is handy for controlling things like debris emission too.

simple_timer_v01.hipnc

[wildon]

thank you very much is exactelly what i want to do  

[petethechin]

Thanks for this solution, 3 years later!!

[bonassus]

I think the simple timer example posted above is not so simple. Here is an example of a sop solver timer that is actually simple. 

simple_Timer.hiplc