Default 3d - how to shoot a bullet to the camera direction?

How do I...?
#1

I know how to shoot horizontally to any direction. But how to shoot a bullet to the camera direction even if the camera is facing to the top, bottom or diagonally?

#2

I’ve solved this.

2023-09-24_19-56-28
2023-09-24_19-56-281543×248 29.5 KB

#3

Very nice, thanks for showing!