Control Particle Collision Relationships

[Goldfish]

I am trying to create a Particle/Grain simulation in which I can control which particles collide with certain static objects. I have successfully set up the simulation using two methods but they both have shortcomings and am wondering if there is a more elegant solution. Ideally, the relationships could be determined on a POP source or POP group basis.

First, I tried using POP Collision Detect nodes which works but cannot be used with Static Object Colliders and therefore the particles cannot cannot 'bounce' upon collision.

Next, I tried using Collide Relationship nodes but had to merge multiple POP solvers in order to have two distinct POP objects that the Collide Relationship nodes can reference. This approach also works but the approach seems incorrect and will require redundant nodes to add things like forces to the entire simulation.

Any help or guidance is greatly appreciated.

POP_Collider_Relationships_Multiple_POP_Solvers.hiplc POP_Collider_Relationships_POP_Collision_Detect.hiplc

[fencer]

Try popcollisionignore

POP_Collider_Relationships_POP_Collision_Detect_v02.hipnc