Hello there !
I'm following the Applied Houdini Rigid II,
One part is to get a popMetaballForce input force on certain frame and divided by mass, in order to get the acceleration for constraint breaking, but in rbdPackedObject:Geometry the “force” value is always (0, 0, 0).

My question is

1. Why I can still get the explode result if the force value is zeros?
2. How to get the right “force” value?

Thx !

your force has already been applied and zeroed out within this timestep
to see the values connect it to post solve input, however they will be applied next timestep

tamte
your force has already been applied and zeroed out within this timestep
to see the values connect it to post solve input, however they will be applied next timestep

Oh my, thank you !!!!
This is really one classic lesson on Pre and Post which the tutorial forgot to mention!

Thank you again for the timely help !