Messages

1

General / Proper way to use classes and user created files

« on: April 17, 2016, 01:12:03 am »

Hey guys. I'm going over classes and I'm not sure how I'm supposed to use them. Are classes only supposed to have one job? For example, if I create a class to create a game window, should that class *just* create a game window like this:

#include "window.h"
#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>
 void gameWindow::createWindow()
    {
    sf::RenderWindow window;
    window.create(sf::VideoMode(500, 500), "Move the Ball");
    window.display();


    while (window.isOpen())
     {
        sf::Event event;
        while (window.pollEvent(event))
         {
        if (event.type == sf::Event::Closed)
            window.close();
         }

     }
    }

I'm creating a game called "Move the Ball" (settle down, you'll get to play it soon enough) and I'm literally just trying to move a ball around in a window but I've already run into a problem. If this window.cpp and window.h strictly has one job to create a window, I can't access the window object from Renderwindow.window to use in my ball.cpp to actually draw the ball in this window. Am I doing this right or do I have the idea of uses classes totally wrong? Thanks.

2

General / Help! I'm an idiot (and new) pollEvent()

« on: April 16, 2016, 09:10:49 pm »

Hi, guys. I'm new and a terribly slow learner...learning to program...c++. Great combination. I get hung up on stuff like why functions are given the names they are. For example in the following code I understand everything until I get to where we access the "pollEvent" function.

int main()
{
   sf::Window window;
   window.create(sf::VideoMode(600, 600), "Window");

   while (window.isOpen())
   {
       sf::Event event;
       while (window.pollEvent(event))
       {
           if (event.type == sf::Event::Closed)
            window.close();
       }
   }

}

Being an idiot, and a visual learner, I think of the window object accessing a function called pollEvent. Now when I think of pollEvent, I think of an event where someone is voting...that doesn't make sense to me, so then I research the definition of poll and other than voting, it can be described as a noun being "a head". I am such a dumbass. This doesn't make any sense to me. Can someone explain to me in layman terms why pollEvent is called what it is so I can remember and understand exactly what it does? Thanks guys.