hdk-sdl/include/hdk/sdl/Application.hpp

#pragma once
#include <hdk/sdl.hpp>
/// @file Application.hpp
/// For complete documentation, see src/Application.cpp
namespace hdk::sdl {
  /** SDL Requires this interface to be implemented by the application class. */
  class AppInterface {
    public:
      virtual SDL_AppResult Event(SDL_Event* event) = 0;
      virtual SDL_AppResult Init(int argc, char* argv[]) = 0;
      virtual SDL_AppResult Iterate() = 0;
      virtual void Quit(SDL_AppResult code) = 0;
  };
  /** I'm calling it a public application because the AppStatus member is publicly accessible and so can be
   * modified directly by the rest of application logic that has access to this application instance via this subclass.
   */
  class PublicApp : public AppInterface {
    public:
      SDL_AppResult AppStatus { SDL_APP_CONTINUE };
      virtual SDL_AppResult Event(SDL_Event* event) override { return AppStatus; }
      virtual SDL_AppResult Init(int argc, char* argv[]) override { return AppStatus; }
      virtual SDL_AppResult Iterate() override { return AppStatus; }
      virtual void Quit(SDL_AppResult code) override {
        // Default quit behavior is to do nothing, allowing the app to control its own lifetime.
      }
  };
  /** Defines basically everything except for Init */
  class ProtectedApp : public AppInterface {
    protected:
      SDL_AppResult AppStatus { SDL_APP_CONTINUE };
      const sdl::Log& AppLog { sdl::Log::Application };
    public:
      sdl::evt::AllTypes events;
      virtual SDL_AppResult Event(SDL_Event* event) override {
        events.Trigger(event);
        return AppStatus;
      }
      grid::eps::Conduit<> OnIterate;

      virtual SDL_AppResult Iterate() override {
        OnIterate();
        return AppStatus;
      }
      virtual void Quit(SDL_AppResult code) override {
        AppLog.Debug("Quit called with code %d", code);
      }
  };
} // namespace hdk::sdl