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POP Particles are'nt colliding with Static object


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I am linking my Houdini project file for you guys! Please take time and analyze my blunders, trying hard to make this project.

I am having problem with my project which i am making for my portfolio, but one thing has blown my mind in pieces since few days now, so sad. 

Here i have done Ground fracture and simulated all the fractured pieces. But when i am trying to make Debris pieces collide with my Static Object(i.e. Ground Fracture), then it won't collide and by ignoring that, fall down. Particles are not colliding with the Static object. I have tried each and every step i know to solve this but particles are not colliding. I tried by making the ground VDB and then make volume collision on Static object, that works but it plays the simulation too slow that i can't even analyze what is happening. 

Please help me guys, From my side i have done everything i know. 

Your support makes more value to my project, Thanks in Advance.

Ground_Fracture19.hip

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It looks like you are spawning particles inside the collider, don't do that. Also review your concave/convex settings on the collision objects. Make the collider deeper, or write vex code to delete any points lower than a certain y-axis value.

particle_colllide.gif

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