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1

General / [SOLVED ]Do calculations after window.clear(), is it bad?

« on: February 24, 2017, 01:29:40 pm »

Hi,

so I did a small code for do a sort of tilemap, that uses an std::vector of a class that inherits of sf::Sprite. So basically, a

std::vector<sf::Sprite> tilemap(i, sf::Sprite(sprite));

But I have to draw this tilemap in the constructor, where other operations are done. So I am basically doing this:

 window.clear(sf::Color::Cyan);

    std::vector<Tile> tilemap(i, Tile(tile));

    for(int a = 0; a < tilemap.size(); a++)
    {
        tilemap[a].setPosition(a * xpos, ypos);
    }

    for(int a = 0; a < tilemap.size(); a++)
    {
        window.draw(tilemap[a]);
    }

     window.draw(hero);

     window.display();

This is my till class, that inherits of sf::Sprite.

Tile::Tile(sf::Texture texture, int x, int y, int scalex, int scaley)
{
    t = texture;
    xpos = x; ypos = y; scx = scalex; scy = scaley;

    this->setTexture(t);
    this->setPosition(xpos, ypos);
    this->setScale(scx, scy);
}

Tile::Tile()
{

}

So my question is, is it bad, to do things beetween window.clear and window.display, or that doesn't matter? Will that impact the framerate of the program?

Thanks

Ah, I have of course done a class for do the vector and all, TileArray:

#include "TileArray.h"

TileArray::TileArray(int I, int x, int y, Tile &tile, sf::RenderWindow &window)
{
    i = I;
    xpos = x; ypos = y;

    std::vector<Tile> tilemap(i, Tile(tile));

    for(int a = 0; a < tilemap.size(); a++)
    {
        tilemap[a].setPosition(a * xpos, ypos);
    }

    for(int a = 0; a < tilemap.size(); a++)
    {
        window.draw(tilemap[a]);
    }
}

2

General / SFML 2.4 bugged?

« on: November 20, 2016, 12:53:04 pm »

Hello everyone. I saw that sfml 2.4 was released a few days ago, so I decided to try it out. I installed it and copied/pasted the example code of the sfml tutorial to see if it works. But the console said that he failed to open window's context or something like that. So I thought that maybe, it was my installation of the new sfml that was wrong. I installed the sfml 2.2 again to test, but with the old version, it works perfecty. Am I just stupid, or is it a real problem?

3

General / [Solved] sf::Event in Button class

« on: August 03, 2016, 08:42:33 pm »

Hi,
I have made a class Button and inside I've placed a bool Button::isClicked(). With this code it worked fine:

bool Button::isClicked()
{
    sf::Event event;

    sf::Vector2f mousePosition = static_cast<sf::Vector2f>(sf::Mouse::getPosition());

    if(this->getGlobalBounds().contains(mousePosition)
    && sf::Mouse::isButtonPressed(sf::Mouse::Left)) //if clicked
    {
        return true;
    }
    else
    {
        return false;
    }
}

But I couldn't place other buttons on the same place on an "other window" (I did a thing like this:)

if(status == "MENU")
                  {
                        ...

                        window.clear();
                        window.draw(...);
                   }
                   if(status == "GAME")
                  {
                          ...

                        window.clear();
                        window.draw(...);
                   }
                   

So I tried to do something like that:

bool Button::isClicked()
{
    sf::Event event;

    sf::Vector2f mousePosition = static_cast<sf::Vector2f>(sf::Mouse::getPosition());

    if(this->getGlobalBounds().contains(mousePosition)
    && event.type == sf::Event::MouseButtonReleased
    && event.mouseButton.button == sf::Mouse::Left) //if clicked
    {
        return true;
    }
    else
    {
        return false;
    }
}

but it doesn't work. The program runs fine (I have no errors) but I can't press the buttons. So I tried to put that code in the main.cpp for see if it is the fault of the event that could be written with a wrong syntax:

while(window.isOpen())
                 {

                  ...

                sf::Vector2f mousePosition = static_cast<sf::Vector2f>(sf::Mouse::getPosition());

                 if(button.getGlobalBounds().contains(mousePosition)
                 && event.type == sf::Event::MouseButtonReleased
                 && event.mouseButton.button == sf::Mouse::Left) //if clicked
                 {
                       //Do something
                 }

                   }

   Instread of:

while(window.isOpen())
                 {

                  ...

                 if(button.isClicked()) //if clicked
                 {
                       //Do something
                 }

                   }

And that works. Any ideas?