FLIP collisions with geo resulting in moving geo broken?

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Say you want the water (FLIP Fluid) to smash a brick wall or push a barrel etc. (RBD Object).
I've tried in vain. I think it's broken? it should just work? but it doesn't.
Version 13.0.547

You have a FLIP fluid flowing.
You have a stack of boxes.
You select RBD Object when the boxes are selected but when simulating they don't move.
Please explain how to enable moving?

I've set the densities, frictions, etc. nothing but a staticSolver style effect results even though it's clearly created a RigidBodySolver aka Bullet solver etc.
Changing the solver to RBD mode makes no difference either.
Diving into the RigidBodySolver node reveals nothing obviously broken there either.
I even stripped it down and the boxes always stay still, which is not my expected/desired behavior.

I've even added an Assemble node to the boxes object, still no difference.
Also tried Make Breakable which adds a Voronoi Fracture Configure Object.

So intuitive… I've been _____ by this software… again.

I've noted this example file here…
https://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=28386&highlight=&sid=c025e7a5b90830217007b4ddf69b944a# [sidefx.com]
It was working in 12, but no longer.
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I think it's the feedback scale.
It took 2 days to find this.
It should be a default of 1.0

/obj/AutoDopNetwork/flipsolver1/feedbackscale
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Make sure to also post an RFE, request feature enhancement - critical feedback like this can help the development of Houdini.

The RFE is available vie the Support menu above.

Thanks!
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