"Do something" every time a particle is emitted

Unity Engine
1

My rocket launcher has particle effect which releases rocket particles. how can I do something everything a particle is emitted? My goal is to reduce the ammo count each time a particle is released.

There is no exposed callback for particle Birth.

I know that particles have collision and trigger callbacks, but I’m not able to access the collided object’s name or tag through trigger, so the ammo will increment when hitting ANY trigger in the environment, which is bad. Through a collision check I can retrieve the collided GO, but I’m already using collisions to destroy my rocket.

any advice?

2

I dont know the answer to your actual question involving the particle system, but i’d probably make the rocket itself an gameobject based on some prefab, which you then have full control over, plus you can even pool it in case you plan on using tons of rockets. And the rocket itself could spawn particles, like smoke.
I’m not sure if the way you try to do it is an intended application of the particle system.