25-02-2021, 09:55 AM
(This post was last modified: 25-02-2021, 09:56 AM by josemendez.)
(25-02-2021, 09:48 AM)asimofu_ok Wrote: Hi.
Fluid particles containing sticky collision materials bounce off and scatter when in contact.
For example in FluidViscosity sample.
This happened at Unity 2019.4.21f1 and 2020.2.6f1.
Something broken?
The viscosity scene uses a sticky material by default, but I can't reproduce this in either Unity version (testing right now).
Only way I can get it to behave similar to this is using huge values for the stickiness parameter (> 10), which is expected to cause problems, since the sticky impulse becomes much larger than the depenetration impulse. Having a very large stick distance will also cause weird behavior (and have a very negative impact on performance, as particles now need to check object proximity inside a very large radius).
What are your collision material parameters?