NelsonMandella Wrote:Say you have a source file called main_menu, and in that file you have a global variable, g_is_main_menu_open, obviously functions outside of the source will want to query it so it's helpful to create an accessor function like this:

BOOL is_main_menu_open() {
return g_is_main_menu_open;
}

When you iterate through a list of game entities(and eventually you will), you may want want to use pointer parameters, rather than passing indices, it's quicker, more elegant, and makes your code easier to read.
...

This is where it gets subjective and takes experience, and is kind of the "art" of C programming. Sometimes I prefer to use an accessor to make things cleaner, but sometimes I just go bare-bones and access the global directly from the other file to make things cleaner. One thing I will say that I've learned about C over the years: try to listen carefully to what everybody says and then disregard them and do whatever you want. Rebellion is liberating!