Particles collision check

I have a question. Is there a way I can activate some event on collision of each particle of a certain particle emmiter?
And check tag of the object particles collide with?
I am trying to write a script, that changes raindrops into circles on the horisontal surfaces, and into rolling drops (dot with a trail) on inclined ones. I figured it can be done by tag check, but I have stuck.
Thanks in advance.

It isn’t possible. You can just detect collision of the whole particle system by adding a collider to it, but you can’t check for each particle. If you wanna make raindrops, then just instantiate invisible objects with a particle system with max and min 1 particle and infinite time, and make it move downwards. After colliding instatiate the splash.

– David