//obliczanie ile minut upłyneło od ostatniego update
public int CalculateNumberOfCycles()
{
GameRepository gameRepository = Context.gameRepository;
TimeSpan timeSinceLastUpdate = DateTime.Now.Subtract(Update);
int numberOfCycles = (int)timeSinceLastUpdate.TotalMinutes;
Update = Update.AddMinutes(numberOfCycles);
gameRepository.Save();
return(numberOfCycles);
}