Global variables

[jsvoboda]

Hi,
as a javascript newb I was kind of trying to copy the structure of your game, but realized that you are extensively using global variables.

For example:

Ball.Game = function(game) {
    keys = null;
    ball = null;
    walls = null;
        ...
};

Would you mind explaining why?

Thank you,
Jaromír

[sombriks]

He's using Ball as namespace.

Game is receiving the constructor function. It's acting as class.

—
Enviado do Mailbox

On Fri, Jan 16, 2015 at 8:57 AM, jsvoboda [email protected]
wrote:

Hi,
as a javascript newb I was kind of trying to copy the structure of your game, but realized that you are extensively using global variables.
For example:

Ball.Game = function(game) {
  keys = null;
  ball = null;
  walls = null;
        ...
};

Would you mind explaining why?
Thank you,

Jaromír

Reply to this email directly or view it on GitHub:
#1

[jsvoboda]

Yea, I get that, but implicitly declared variables (i.e. without 'var' keyword) are global no matter where they are declared. At least it looks that way, try running the following (in console for example):

Ball = {};
Ball.Game = function(game) {
    some_variable = "imho global";
};
var game = new Ball.Game();
some_variable

[end3r]

The demo game was created at a doc sprint during weekend a few months ago and was just a proof of concept, but I never had the chance to finish it. I'll try to rewrite it as it should be, with all the good practices, and describe everything in detail in the related article.

[jsvoboda]

Ok, thank you, I was just wondering whether there's something I am missing.