How to do persistant data in vex

[Ungoliant]

Hello i want to do persistent data in vex, like preserve group in pop, i want create a impact system but the deformation only occurs when the particle is intersecing the mesh, i want to add deformation

i upload my scene, thanks in advance

rayintersect.hip

[anim]

you cannot do it directly in SOPs because data is not fed back by default as in simulation environment like POPs or DOPs

but there are some ways to do it

the most versatile solution is the SOP solver DOP

but for the simple things you can also use CHOPS to accumulate values with Area CHOP

or you can make particles stop on the grid so they will affect it permanently

or there is proto installable Feedback SOP (at least in H9.5), but it is kind of the same as SOP solver DOP, but directly in SOPs

[Ungoliant]

thanks anim i will try with chops, my idea its dont use dynamic solvers, for fast simple simulations, later i'll post the result

[Ungoliant]

here is my result, i did that with chops,

y have some problems when i restart the sim, some like the the scene dont purge the cache

test_01.mov

rayintersect_02.hip