c++ - SFML - 流体屏幕更新？

Question

我从 sfml 2.1 开始，但我找不到如何让程序流畅地运行

我的意思是，该程序可以正常运行，但除非我执行某些操作，例如按下按钮或移动鼠标，否则主循环不会运行，

这是我的主循环代码的例子

     window.setFramerateLimit(30);  // set max fps to 30

     while (window.isOpen())
     {
      // this code ignores the framerate limit and doesnt runs when an event is found
         while (window.pollEvent(event))
         {
              // this code works fine but it wont run unless the user presses a key or moves the mouse
         }
     }

有什么想法吗？

Answer 1

主循环确实在运行，您没有在其中执行任何操作。

来自 2.1 的教程:

    while (window.isOpen())
    {
        // check all the window's events that were triggered since the last iteration of the loop
        sf::Event event;
        while (window.pollEvent(event))
        {
            // "close requested" event: we close the window
            if (event.type == sf::Event::Closed)
                window.close();
        }

        // clear the window with black color
        window.clear(sf::Color::Black);

        // draw everything here...
        // window.draw(...);

        // end the current frame
        window.display();
    }