Unity Collider Position - Raycast Spherecast

[Kristaps]

Obi is not made using Unity's physics engine, so particles aren't part of Unity's physics engine (if they were, we would inherit all performance and stability problems of the built-in engine). Using raycasting/spherecasting won't detect them, as casting only works with the built-in Unity physics objects.

Particles use their own collision detection system, here's how you can get all to contacts in a frame and  detect Unity objects colliding against particles (trigger colliders work too):

http://obi.virtualmethodstudio.com/tutor...sions.html

I just added Unity colliders to rope and job done!