int CGame::Run (void) 
{  	
  bool bExitApp = false;
	
  while (!bExitApp)
  {
    SDL_Event event;    	
		
    // Check for events
    while (SDL_PollEvent (&event))
    {
      switch (event.type)	    
      {    
	case SDL_KEYDOWN:	
	  switch( event.key.keysym.sym )
	  {
	    case SDLK_ESCAPE:
	      CleanupEnvironment ();	      
	      bExitApp = true;	
	      break;
            
            default:
              break;
          }
	  break;
	
        case SDL_QUIT:	      
	  CleanupEnvironment ();	      
	  bExitApp = true;	      
	  break;
	
        default:      
	  break;	    
      }				 
    }   
    if (!bExitApp)	
    {	  
      RenderEnvironment ();	
    }  		
  }
  
  return S_OK;
}

int CGame::RenderEnvironment (void) 
{  
  int iResult;
  
  // Frame move the scene
  if (FAILED (iResult = FrameMove ()))    
  {      
    return iResult;    
  }
  
  // Render the scene as normal
  if (FAILED (iResult = Render ()))    
  {
    return iResult;    
  }
  
  return S_OK;
}

int CGame::FrameMove( void )
{
  m_pGates[(int)(rand() % GATES_MAX)]->SwitchState();
	
  return S_OK;
}

int CGame::Render (void) 
{  	
  Uint32 color;
  // Create a white background 
  color = SDL_MapRGB (m_pSurface->format, 255, 255, 255);
  SDL_FillRect (m_pSurface, NULL, color);
	
  // Render all gates
  for( int iGate = 0; iGate < GATES_MAX; ++iGate )
  {
    m_pGates[iGate]->Render( m_pSurface );
  }
	
  // Make sure everything is displayed on screen
  SDL_Flip (m_pSurface);
  
  return S_OK;
}

int CGate::Render( SDL_Surface* pSurface )
{
  SDL_Rect myRect;
  myRect.x = 64 + m_iPosX;
  myRect.y = 80 + m_iPosY;
	
  SDL_BlitSurface( m_pimgGate[m_iState]->GetImage (), NULL, pSurface, &myRect );	
  
  return S_OK;
}