spg-project/Main.cpp

#include "gaming-core/input/Buttons.h"
#include "gaming-core/utils/Clock.h"
#include "gaming-core/wrapper/GL.h"
#include "gaming-core/wrapper/GLEW.h"
#include "gaming-core/wrapper/GLFW.h"
#include "gaming-core/wrapper/Window.h"
#include "gaming-core/wrapper/WindowOptions.h"

void updateSize(const Window& window, Size& size) {
    Size newSize = window.getSize();
    if(newSize.width != size.width || newSize.height != size.height) {
        size = newSize;
        GL::setViewport(size.width, size.height);
    }
}

int main() {
    if(GLFW::init()) {
        return 0;
    }

    Size size(1024, 620);
    WindowOptions options(4, 0, size, false, "test");
    Window window(options);
    if(window.hasError() || GLEW::init()) {
        return 0;
    }

    Buttons buttons(window);
    Clock fps;

    window.show();

    GL::checkAndPrintError("setup error");

    const Clock::Nanos nanosPerTick = 50000000;
    Clock::Nanos lag = 0;
    while(!window.shouldClose()) {
        GL::checkAndPrintError("loop error");
        updateSize(window, size);
        // call render tick: static_cast<float> (lag) / nanosPerTick;
        window.swapBuffers();
        lag += fps.update();
        while(lag >= nanosPerTick) {
            lag -= nanosPerTick;
            buttons.tick();
            // call game tick
        }
        glfwPollEvents();
    }
    return 0;
}