title: In game programming are global variables bad?
body: <p>I know my gut reaction to global variables is "badd!" but in the two game development courses I've taken at my college globals were used extensively, and now in the DirectX 9 game programming tutorial I am using (www.directxtutorial.com) I'm being told globals are okay in game programming ...?  The site also recommends using only structs if you can when doing game programming to help keep things simple.</p>
  
  <p>I'm really confused on this issue, and all the research I've been trying to do is very confusing.  I realize there are issues when using global variables (threading issues, they make code harder to maintain, the state of them is hard to track etc) but also there is a cost associated with not using globals, I'd have to pass a loooot of information around very often which can be confusing and I imagine time-costing, although I guess pointers would speed the process up (this is my first time writing a game in C++.)  Anyway, I realize there is probably no "right" or "wrong" answer here since both ways <em>work</em>, but I want my code to be as proper as I can so any input would be good, thank you very much!</p>