Messages

1

Window / Getting segfault at RenderWindow method callings

« on: September 20, 2019, 08:41:46 pm »

Each time I try to invoke any method of my RenderWindow object, I get a segfault:

At this example at 1st at line 117

#include <SFML/Graphics.hpp>
#include <array>
#include <iostream>
#include <cstdlib>
#include <forward_list>

const int ROWS = 10;
const int COLS = 20;
const int CELL_SIZE = 16;

namespace LifeName {
enum Life { Grass = 1, Cow };
}

class Life : public sf::Drawable
{
public:
    int age;
    sf::Sprite sprite;
    sf::Vector2<int> pos;
    LifeName::Life lifeName;
    bool is_spawn;
public:
    Life() : age(0), is_spawn(false)
    { sprite.setColor(sf::Color(0xff,0xff,0xff,0x00));}
   
    virtual void draw( sf::RenderTarget & rt, sf::RenderStates s) const override
    {
        rt.draw( sprite );
    }
    virtual void live() = 0;
    virtual void spawn( std::array<std::array<int,COLS>,ROWS> & world) const = 0;
};


class Grass : public Life
{
public:
    void draw( sf::RenderTarget & rt, sf::RenderStates s) const override
    {
        rt.draw(sprite);
    }
    void live() override
    {
        if( is_spawn == true) is_spawn = false;
       
        if( age ++ > 10)
        {
           is_spawn = true;
        }
    }
    void spawn(std::array<std::array<int,COLS>,ROWS> & world) const override {}
};
class Animal : public Life
{

};


class Game : public sf::NonCopyable
{
    std::array<std::array<Life*,COLS>,ROWS> m_grid;
    std::forward_list<Life*> m_lifeList;
    sf::Vector2<int> m_cellSize;
    sf::RenderWindow & m_window;
    sf::Texture m_grassTexture;

public:  
    Game() : m_cellSize(CELL_SIZE,CELL_SIZE),
        m_window( *new sf::RenderWindow(sf::VideoMode(COLS*CELL_SIZE,
        ROWS*CELL_SIZE),"Test") )
    {
        m_grassTexture.loadFromFile("/home/nico/develop/c++/sfml/gol/media/64x16_grass.png");
        for ( int row = 0;  row < m_grid.size(); ++row ) {
            for( int col = 0; col < m_grid[row].size();  ++col)
            {
                if( std::rand()%10 == 0) {
                    Life * grassCell = new Grass;
                    m_grid[col][row] = grassCell;
                    grassCell->pos = std::move(sf::Vector2<int>(col, row));
                    m_lifeList.push_front(grassCell);
                    grassCell->sprite.setPosition( col*CELL_SIZE, row*CELL_SIZE );
                    grassCell->sprite.setTexture( m_grassTexture );
                    grassCell->sprite.setTextureRect(
                        sf::Rect<int>(0 ,0, m_cellSize.x, m_cellSize.y )
                    );
                }
                else {
                    m_grid[col][row] = nullptr;
                }
            }
        }
    }
    ~Game()
    {
        delete &m_window;
        for( Life * life : m_lifeList) delete life;
    }
private:
    void draw()
    {            
        for( auto const life : m_lifeList)
        {
            m_window.draw( * life );
        }
    }
    void update()
    {
        for( Life * life : m_lifeList)
            life->live();
     }
     
public:    
    void run()
    {
        std::cerr << "Mark0\n";  //DEBUG
        while( m_window.isOpen() )    // <- Here I get the segfault
        {
            sf::Event event;
            std::cerr << "Mark1\n";  //DEBUG
            while( m_window.pollEvent(event))
            {
                if( event.type == sf::Event::Closed)
                {
                    m_window.close();
                }
            }
            std::cerr << "Mark2\n"; //DEBUG
            m_window.clear( sf::Color::Black );
            draw();
            std::cerr << "Mark3\n"; //DEBUG
            m_window.display();
            update();
            sf::sleep(sf::seconds(1));
        }
    }
};

int main()
{
    Game game;
    game.run();
}
 

2

General / Why will some sprites not been drawed?

« on: April 18, 2018, 11:03:25 pm »

Here my code:

int main()
{
    sf::Texture texture;
    if (!texture.loadFromFile("/home/nico/Pictures/sheets/64x32_tictactoe.png"))
    {
        std::cerr << "Texture file couldn't loaded!\n";
        return EXIT_FAILURE;
    }
    sf::Sprite cross(texture,sf::Rect<int>(0,0,32,32));
    cross.setPosition(0.0f,0.0f);

    sf::Sprite ring(texture);
    ring.setTextureRect( sf::Rect<int>(32,0,32, 32));
    ring.setPosition(32.0f, 0.0f );

    std::array<sf::Sprite,9> sprite;
    for( auto sp : sprite)
    {
        sp = sf::Sprite(texture, sf::Rect<int>(0,0,32,32));
        sp.setPosition(100,100);
    }
    sf::RenderWindow window(sf::VideoMode(400, 400), "TicTacToe");

    while (window.isOpen())
    {
        window.clear();

        window.draw(cross);  // works
        window.draw(ring);  // works
        for (auto sp : sprite) window.draw(sp); // doesn't work

        window.display();

        sf::Event event;

        while (window.waitEvent(event))
        {
            if (event.type == sf::Event::Closed)
            {
                window.close();
            }
        }
    }
    return EXIT_SUCCESS;
}

Any idea why the sprites of the std::array will not drawed? Thanks for help.