App.hpp

Go to the documentation of this file.

#pragma once
 
#include <memory>
 
#include "BAREErrors.hpp"
#include "ScreenList.hpp"
#include "Timer.hpp"
 
namespace BARE2D
{
    class InputManager;
    class Window;
    
    /**
     * @class App
     * @file App.h
     * @brief The App class embodies the entire application. It controls the GL settings, the window, the screens, input, FPS - in whole, the entire overarching input-output cycle.
     */
    class App
    {
    public:
        App();
        ~App();
        
        /**
         * @brief Runs the program! Starts the update-draw loop.
         */
        void run();
        
        /**
         * @brief Returns the screen list, where the program can add more screens, set entry points, etc.
         */
        ScreenList* getScreenList();
        
        /**
         * @return Returns a pointer to the window, so that the client can change its size, title, etc.
         */
        Window* getWindow();
        
        /**
         * @return The input manager pointer. 
         */
        InputManager* getInputManager();
    
    private:
        bool m_isGameRunning = false;
        bool m_isInited = false;
        
        std::unique_ptr<ScreenList> m_screenList;
        
        InputManager* m_inputManager = nullptr;
        
        Timer* m_timer = nullptr;
        
        Window* m_window = nullptr;
 
        /**
         * @brief Initializes the applet and engine. Creates a window, held within this App. Only for internal use.
         */
        void init();
        
        /**
         * @brief Updates input, output, etc. Only for internal use.
         */
        void update(double dt);
        
        /**
         * @brief Draws the current screen, based on that screen's drawing protocol.
         */
        void draw();
        
        /**
         * @brief Updates any input, and throws it down the pipeline!
         */
        void updateInput();
        
        /**
         * @brief Polls inputs from SDL and updates the inputmanager as appropriate.
         */
        void pollSDLInput();
        
        /**
         * @brief Calls the screen's exit function, and then cleans this class up for destruction.
         */
        void exitApp();
    };
 
}