Custom nParticle updater and nucleus solver registry

[jonathan_khao]

Hi, 

I made simple C++ plugin to set nParticle positions from an input vector array, where I just want to set nParticle positions, no nucleus evaluation, no solve or whatsoever. 

It's based on the testNsolverNode example, where I just overwrite the nParticle's currentState attribute with the input vectorArray values. It is working but the console gets filled with "Trying to add a duplicate id to the nucleus solver registry"  messages. 

Is there a way to fix this ? I didn't find any documentation on the issue, and even after removing all nucleus nodes from the scene, I still get spammed with the same message. 

Or ... would there be another way to do this ? I'll be working with high particle count so having no solver computation between frames is important (and I do need nParticle outputs like meshing). 

Any help would be much appreciated !

[jonathan_khao · Accepted solution]

Managed to get around the problem by using the positions and cacheArrayData attributes of the nParticle node. This properly updates the nParticles without sending any warning messages.