Script interface for the TriggerModule of a Particle System.
This module is useful for killing particles when they touch a set of collision shapes, or for calling a script command to let you apply custom particle behaviors when the trigger is activated.
The example code for M:UnityEngine.MonoBehaviour.OnParticleTrigger shows how the callback type action works.
Particle System modules do not need to be reassigned back to the system; they are interfaces and not independent objects.