Help Add vector and script when hit collider.

[Richard]

Hi,

I think you want to use a trigger (built-in Unity stuff). Simply enable the "IsTrigger" checkbox of your collider. It will detect particles entering it, but won't generate collisions. See:
https://docs.unity3d.com/Manual/CollidersOverview.html

Hello.

How can I fix:
NullReferenceException: Object reference not set to an instance of an object
Obi.ObiCloth.AddToSolver (System.Object info) (at Assets/Obi/Scripts/Actors/ObiCloth.cs:167)
Obi.ObiActor.Start () (at Assets/Obi/Scripts/Actors/ObiActor.cs:163)
?