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#include "game.h"
#include "../Time/Timer.h"
#include "../input/Event.h"
#include "../Graphics/Window.h"
#include "../Math/Math.h"
#include <iostream>

namespace jin
{
namespace core
{

    using namespace jin::graphics;
    using namespace jin::input;
    using namespace jin::time;
    using namespace jin::math;

    Game::Game() :_running(true) {};

    void Game::run()
    {
		if (_onLoad != nullptr)
			_onLoad();
        Window* wnd = Window::get();
        const int FPS = wnd ? wnd->getFPS() : 60;
        const int MS_PER_UPDATE = 1000.0f / FPS;
        _running = true;
        Event e;
        int current = getMilliSecond();
        int previous = current;
        int dt = 0;
        while (_running)
        {
            while (jin::input::pollEvent(&e))
            {
                if (_onEvent != nullptr)
                    _onEvent(&e);
                if (!_running) 
                    goto quitloop;
            }
            previous = current;
            current = getMilliSecond();
            dt = current - previous;
            if (_onUpdate != nullptr) 
                _onUpdate(dt);
            if (_onDraw != nullptr) 
                _onDraw();
            wnd->swapBuffers();
        }
    quitloop:;
    }

    bool Game::initSystem(const SettingBase* setting)
    {
        if (setting == nullptr)
            return false; 
        Game::Setting* s = (Game::Setting*) setting;
        _onEvent = s->eventHandler;
        _onUpdate = s->updater;
        _onDraw = s->drawer;
        _onLoad = s->loader;
        return true;
    }

    void Game::quitSystem()
    {
    }

} // core
} // jin