How to use bit operations in games?

Question

Programming

Not strong in bitwise operations. In some games on github, I see that they use bit shifts there (mostly). Here is an example -> https://github.com/Jahmaican/jcaster/tree/master/class.

Answer 1

Shift right (>>) is a division by 2^n rounded down.
Shift left (<<) is a multiplication by 2^n
For example, x >> 1 is the same as x / 2 with rounding
x << 2 is the same as x * 4

Answer 2

Well, about the same as the addition operator. And approximately for the same - to implement the intended logic.