IEnumerator PlayGameRoutine()
{
// if level is timed, start the timer
if (m_levelGoalTimed != null)
{
m_levelGoalTimed.StartCountdown();
}
// while the end game condition is not true, we keep playing
// just keep waiting one frame and checking for game conditions
while (!m_isGameOver)
{
m_isGameOver = m_levelGoal.IsGameOver();
m_Winner = m_levelGoal.GetWinner();
// wait one frame
yield return(null);
}
}