/// <summary>
/// Decrement player's count down. Called at every timer tick.
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
private void DecrementTime(Object source, ElapsedEventArgs e)
{
if (Time - 1 < 0)
{
timer.Stop();
game.GameOver("A player's time has expired.");
}
Time--;
}