How to get class instance from another class?

Hello!
I need some help =)

How to get class instance from another class if it not spawned on scene?

For example:
I have AMyProjectile class and method Start() (not static)

How to get this from Player Input Controller class?

That instance does not exist, so you cant have it right now.

You can check at Runtime when you need it with “get all actor of class” so you use a for each loop to check every bullet in the scene.
You can Also reach it when its spawned. The one who spawn the projectile get also his reference just to pin out.

Otherwise you can flip your work and get his reference by collisions or something.