GameState && SDLInput Interfaces

gistfile1.cpp

class SDLInput
{
  virtual void Input ( SDL_Event *input )
  {
    // while ( SDL_PollEvent ( input ) )
    switch ( input->type )
    {
      case SDL_KEYDOWN:
        onKeyDown ( input->key.keysym.sym, input->key.keysym.mod );
      break;

      case SDL_KEYUP:
        // Temporary state crash workaround by commenting below line out of exec:
        //onKeyUp ( input->key.keysym.sym, input->key.keysym.mod );
      break;

      case SDL_MOUSEMOTION:
        // Temporary state crash workaround by commenting below line out of exec:
        //onMouseMotion ( input->motion.x, input->motion.y );
      break;

      // ...
    }
  } 

  virtual void onKeyDown ( SDLKey key, SDLMod mod );
  {
    // empty implement
  }

  virtual void onKeyUp ( SDLKey key, SDLMod mod )
  {
    // empty implement
  }
};

class GameState: public SDLInput
{
};

class GameEngine
{
  void GameEngine::HandleInput ( void )
  {
    // let the state handle events
    states.back()->HandleInput ();
  }
};

class CardsMenuState: public GameState
{
  void HandleInput ( void )
  {
    SDL_Event event;

    while ( SDL_PollEvent ( &event ) )
      SDLInput::Input ( &event );

    // Previously:
    // SDLInput::Input ();
  }

  void onKeyDown ( SDLKey key, SDLMod mod )
  {
    switch ( key )
    {
      // ...
    }
  }
};