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Jockomo · #1 March 10, 2010 9:00 pm

I'm filling a container with particles via a circle emitter and at a seemingly random point the particles disappear and the circle emitter starts filling the container all over again.
There is a single frame that shows a small fraction of particles leaving the container then they are all gone.

I tried bringing my substeps up to the default of 333 but it still seems to happen.
You can change substeps in the middle of an animation right? or does that destablize the simulation? I'd like to fill it using a low substep level and then raise them once it's filled to 'capture' the action after that point.

my max particles is much higher than the existing particles at the point it disappears.

thanks for any input you may have.

shaun_michael · March 10, 2010 10:20 pm

Can you post a simple scene that exhibits this? My first thought is that it is related to your force settings either daemons or emitter related. Need to know more about the scene really.

Shaun

Jockomo · March 10, 2010 11:51 pm

Here is a link: www.videovoodoo.tv/particlesdisappear.zip

There is an initial state set for the fluid, just reset it to clear the missing cache.
I set the state for right before the particles disappeared.

Now if I render from here I can go a bit further, I'm going to set it off to render now and see how far it gets, but I think it will do the same thing.

Here's a preview.

lukeiamyourfather · March 11, 2010 12:34 am

Looks like either insufficient substeps or the emitter is still putting particles into a closed object that's full (nowhere to go so they overlap and blow up). Cheers!