.bgeo Sequence and Dynaimcs

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Another little question from me again!

I have been given a looping sequence of .bgeos with a timeshift that have ‘constant’ topology (which I have to use) that results in a walk cycle and I wanted to make the person crumble while they walk (for example from the head downwards).

I've managed to make the Voronoi Fracture constant across the moving .bgeos but the issue is that because it's a .bgeo sequence the dynamics are applied to each .bgeo each frame so it doesn't actually collapse, it just turns into a half-crumbled floating mess.

I was thinking that I would need group the fracture pieces that I wanted to be affected by dynamics (probably determined by a bounding box that grows from his head downwards) and keep them in the scene somehow and only import pieces from the following .bgeo that have not yet been affected by dynamics. Maybe something to do with a Solver node?

I hope this makes sense, thanks again for everyone's help!
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If all your .bgeo's have truly the same topology (eg. point and primitive orders are the same), then it wouldn't make a difference of whether it's from a bgeo sequence or if you just had one .bgeo and animated its point positions.
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