Application.h

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#pragma once
 
// ---- Application (top-level orchestrator) ----------------------------------
// Owns all subsystems (AppWindow, ImGuiLayer, InputManager) and the
// aggregate AppState.  Provides an explicit init / run / shutdown lifecycle
// following the Gregory "Game Loop" pattern.
 
#include "AppState.h"
#include "AppWindow.h"
#include "ImGuiLayer.h"
#include "InputManager.h"
 
#include <string>
#include <vector>
 
class Application
{
public:
    Application() = default;
 
    int run();
 
    ~Application();
 
    Application(const Application&)            = delete;
    Application& operator=(const Application&) = delete;
    Application(Application&&)                 = delete;
    Application& operator=(Application&&)      = delete;
 
private:
    // ---- Owned subsystems (explicit lifecycle order) ----
    AppWindow    m_window;
    ImGuiLayer   m_imguiLayer;
    InputManager m_inputManager;
    AppState     m_state;
 
    // ---- Frame-local UI flags ----
    bool m_showDemoWindow = false;
    bool m_showSettings   = false;
    bool m_firstFrame     = true;
 
    // ---- Lifecycle phases ----
    bool init();
    void mainLoop();
    void shutdown();
 
    // ---- Per-frame helpers ----
    void initEngine();
    void initGL();
    void tickScene();
    void handleViewportInput();
 
    // ---- UI drawing (called from mainLoop) ----
    void drawTitleBarAndMenus();
    void drawDockspace();
    void drawPanels();
    void drawDialogs();
};