Messages

1

Graphics / Re: Problem with drawing properties of objects in arrays

« on: May 05, 2015, 07:36:35 pm »

Ok, thank you for the advice - I'll be sure to do so.

2

Graphics / Re: Problem with drawing properties of objects in arrays

« on: May 05, 2015, 06:20:43 pm »

Thank you very much for the quick reply! This explains a ton of the questions I've been having about c++ in general. I replaced that line with

buttonArr[0] = *new Button(texture, sf::Vector2f(0, 0));

and everything is working! Thanks!

3

Graphics / Problem with drawing properties of objects in arrays

« on: May 05, 2015, 04:34:26 pm »

I have created a button class that just contains a texture and sprite. However, when I create an array of these Buttons, window.draw(buttons[0].sprite) doesn't draw the sprite.

Here is the class "Button":

#include <stdio.h>
#include <SFML/Graphics.hpp>
#include "ResourcePath.hpp"

class Button {
public:
    Button();
    Button(sf::Texture myTexture, sf::Vector2f pos);
    sf::Sprite sprite;
    sf::Texture texture;
};

...

#include "Button.h"

Button::Button() {
}

Button::Button(sf::Texture myTexture, sf::Vector2f pos) {
    texture = myTexture;
    if (!texture.loadFromFile(resourcePath() + "cute_image.jpg")) {
        return EXIT_FAILURE;
    }
    sprite = sf::Sprite(texture);
    sprite.setPosition(pos);
}

 

An here is my main():

#include <SFML/Audio.hpp>
#include <SFML/Graphics.hpp>
#include "ResourcePath.hpp"
#include "Button.h"

int main(int, char const**)
{
    sf::RenderWindow window(sf::VideoMode(800, 600), "SFML window");
   
    sf::Texture texture;
    if (!texture.loadFromFile(resourcePath() + "cute_image.jpg")) {
        return EXIT_FAILURE;
    }
   
    Button *buttonArr = new Button[5];
    buttonArr[0] = Button(texture, sf::Vector2f(0, 0));
    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed) {
                window.close();
            }
        }
        window.clear();
        window.draw(buttonArr[0].sprite);
        window.display();
    }
    return EXIT_SUCCESS;
}
 

A window opens, but the screen remains white. Interestingly, if I keep everything the same, but make buttons a single button rather than an array, everything works fine.

Any help here would be much appreciated.