Adding custom particle forces

[josemendez]

So I think misunderstood what ObiSphericalForceZone is used for. If I'm not mistaken, both ObiAmbientForceZone and ObiSphericalForceZone are used for wind simulations, correct? If that's the case, what I should be using is this: Oni.AddParticleExternalForce(solver.OniSolver, ref force, particleIndices, particleIndices.Length) since I am not using wind.

Depending on which actor you're using, force zones affect them differently.

For instance, cloth and fluids are affected by a force zone as a wind source. Ropes are affected by them as forces, since they have no surface for the wind to act upon.

However, using One.AddParticleExternalForce guarantees you add forces, not wind.