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Don't let SFML objects (espacially resources like sf::Texture) be constructed/destroyed at global scope, and everything will be fine.
#include <memory>
#include <Windows.h>
#include <SFML/Graphics.hpp>
class Scene
{
std::shared_ptr<sf::Texture> bkgd_tex_;
public:
Scene::Scene()
{
}
void Scene::setBackground(const std::shared_ptr<sf::Texture>& tex)
{
bkgd_tex_ = tex;
}
};
class Game
{
private:
std::unique_ptr<sf::RenderWindow> window_;
std::shared_ptr<Scene> active_scene_;
public:
Game() {
}
void initialize()
{
sf::VideoMode video_mode;
unsigned int style;
video_mode = sf::VideoMode(600, 600);
style = sf::Style::Titlebar | sf::Style::Close;
window_ = std::make_unique<sf::RenderWindow>(video_mode, "foo", style);
}
void run(const std::shared_ptr<Scene>& startingScene) {
active_scene_ = startingScene;
sf::Event event;
while (window_->isOpen()) {
while (window_->pollEvent(event)) {
if (event.type == sf::Event::EventType::Closed)
window_->close();
}
}
}
};
Game game;
int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
game.initialize();
auto scene = std::make_shared<Scene>();
auto bkgd = std::make_shared<sf::Texture>();
bkgd->loadFromFile(".\\data\\escher_square.png");
scene->setBackground(bkgd);
game.run(scene);
return 0;
}