Question for indie game developers on Unity3D?

Question

Unity

Greetings!
The question is: when developing your games, do you have to resort to mathematical calculations, etc.? Or do you find ready-made codes (for example, the code for the camera's reaction to mouse movement) on the Internet and copy?

Answer 1

Nothing out of the ordinary had to be used. But minimal knowledge like matrices, spherical coordinates, data structures, algorithms, vectors and operations with them, etc. constantly every day they help to do not "copy this here is a working one, which is not really clear how it does its job"
something like this)