I have 3D spheres/cells that are meant to distribute chemicals to their environment that can be absorbed by their neighbors. One way I'm thinking to implement this is by using particles, and maybe even particle shaders.
What I'm wondering is: how (if possible) do I detect the collision of a particle with a
RigidBody, or an
Area? A similar question for 2D was asked 4 years ago, where the answer was no. Has anything changed since then?