Ufdjrw

This might be a noob question, but I'm trying to make a simple player move in a 2D-grid in SFML. I'm creating a while loop for rendering what is happening, and I can get it to work, but I want to use classes for the grid and players etc. The problem is that when I create a window called 'window', I don't know how to implement classes since these don't know what the 'window' is. I hope I have described my problem sufficiently, and I would like any respons on how to make this work or if my method of doing it is already bad and should be changed for another method. Here is a snippet of my code for the class and the undeclared window error.

class myEvents 
public:
 //Variables
 int tSize = 40;
 int tileCount = 20;
 int width = tileCount * tSize;
 int height = tileCount * tSize;

 //Function to create a grid with RectangleShapes
 void grid() 
 for (int i = 0; i < tileCount; i++) 
 
 for (int j = 0; j < tileCount; j++) 
 
 sf::RectangleShape tile(sf::Vector2f(40, 40));
 tile.setFillColor(sf::Color::Magenta);
 tile.setPosition(i*tSize, j*tSize);
 window.draw(tile); //Problem occurs here, 'window' is not declared, it is in the next function
 //window.draw(tile); must execute in the loop to render a full grid
 
 
 

 //Includes while loop for rendering and events. Could be written without class, but I'd still like a class for the grid and later on a player.
 //So I need the window to work with my classes.
 void loop() 
 sf::RenderWindow window(sf::VideoMode(width, height), "Game"); //'window' declared here. Can I move this statement
 //somewhere so that my funcions know where it comes from?
 while (window.isOpen) 

 sf::Event event;
 while (window.pollEvent(e))
 
 //to be further developed
 
 
 
;

Well an easy thing for the window you can do is to create a class and
add the window in it, then include the .h where the class is as you've set the sf::window in the public section. Now I will show you how you can use it

we've got an .h file named window.h (you can name it whatever is comfortable for you)

#include <SFML/Grpahics.hpp>
class window

public:
 sf::RenderWindow window;

and you have the main.cpp(or whatever file you want)

#include "window.h"
window w;

int main()

 w.window.create(sf::VideoMode(800,600),"Title");

the int main() can be whatever function you want it just has to be
called as soon as possible so the window will show.
I hope this helps you with your problem =)
[EDID]:
As the "sf::RenderWindow window" is public every file that has the header with the public "sf::RenderWindow window" can use the window as it is not private. I think you know that but in any case to add it.

Try making the window a class member:

class myEvents 
public:
 //Variables
 int tSize = 40;
 int tileCount = 20;
 int width = tileCount * tSize;
 int height = tileCount * tSize;
 sf::RenderWindow windowsf::VideoMode(width, height), "Game";

 void grid() 
 for (int i = 0; i < tileCount; i++) 
 
 for (int j = 0; j < tileCount; j++) 
 
 sf::RectangleShape tile(sf::Vector2f(40, 40));
 tile.setFillColor(sf::Color::Magenta);
 tile.setPosition(i*tSize, j*tSize);
 window.draw(tile); 
 
 
 

 void loop() 
 while (window.isOpen) 

 sf::Event event;
 while (window.pollEvent(e))
 
 //to be further developed
 
 
 
;

Alternatively, pass the window around:

class myEvents 
public:
 //Variables
 int tSize = 40;
 int tileCount = 20;
 int width = tileCount * tSize;
 int height = tileCount * tSize;

 void grid(sf::RenderWindow& window) 
 for (int i = 0; i < tileCount; i++) 
 
 for (int j = 0; j < tileCount; j++) 
 
 sf::RectangleShape tile(sf::Vector2f(40, 40));
 tile.setFillColor(sf::Color::Magenta);
 tile.setPosition(i*tSize, j*tSize);
 window.draw(tile); 
 
 
 

 void loop() 
 sf::RenderWindow windowsf::VideoMode(width, height), "Game";

 while (window.isOpen) 

 sf::Event event;
 while (window.pollEvent(e))
 
 //to be further developed
 // call grid(window)
 
 
 
;