/// <summary>
/// Stops the clock, or queues a pause if it is the AI's move
/// in an AI vs. Human game.
/// </summary>
public void Stop()
{
if (!Timer.IsEnabled)
{
return;
}
// If it is the computer's turn in an AI vs. Human game, queue the
// pause so that it will take effect when it is the human's turn.
if (!GameViewModel.IsGameOver && !GameViewModel.IsGameAiVersusAi && GameViewModel.IsCurrentPlayerAi)
{
// Pause (in the Switch method) when the computer finishes its move.
_pauseQueued = true;
return;
}
// If it is an AI vs. AI game, halt it. If any players are human,
// then the game will pause automatically when it is a human's turn.
if (GameViewModel.IsGameAiVersusAi)
{
GameViewModel.Stop();
}
Timer.Stop();
UpdateViews();
PlayerOneMoveTimeStopwatch.Stop();
PlayerOneTotalTimeStopwatch.Stop();
PlayerTwoMoveTimeStopwatch.Stop();
PlayerTwoTotalTimeStopwatch.Stop();
}
/// <summary>
/// Starts or resumes the clock.
/// </summary>
public void Start()
{
if (Timer.IsEnabled || GameViewModel.IsGameOver)
{
if (_pauseQueued)
{
_pauseQueued = false;
}
return;
}
Timer.Start();
if (GameViewModel.IsGameAiVersusAi)
{
GameViewModel.Start();
}
UpdateViews();
if (GameViewModel.CurrentPlayer == State.One)
{
PlayerOneMoveTimeStopwatch.Start();
PlayerOneTotalTimeStopwatch.Start();
}
else
{
PlayerTwoMoveTimeStopwatch.Start();
PlayerTwoTotalTimeStopwatch.Start();
}
}
/// <summary>
/// Called when a player makes a move, stopping that player's
/// clock and starting the opponent's clock (or stopping both
/// player's clocks if the game has been paused).
/// </summary>
private void Switch()
{
// If the game is not the main view, and it is now the human's turn
// in a human vs. AI game, then pause the game.
if (!Window.Current.Visible &&
!GameViewModel.IsCurrentPlayerAi && !GameViewModel.IsGameHumanVersusHuman)
{
Stop();
}
// Retain the pause queue state only if it is the computer's turn. This is
// necessary because the pause can occur after the human's turn but
// before the GameViewModel.CurrentPlayer changes (which calls this method).
if (_pauseQueued && !GameViewModel.IsCurrentPlayerAi)
{
Stop();
_pauseQueued = false;
}
if (GameViewModel.CurrentPlayer == State.One)
{
PlayerTwoMoveTimeStopwatch.Stop();
PlayerTwoTotalTimeStopwatch.Stop();
if (Timer.IsEnabled)
{
PlayerOneMoveTimeStopwatch.Restart();
PlayerOneTotalTimeStopwatch.Start();
}
else
{
PlayerOneMoveTimeStopwatch.Reset();
}
}
else
{
PlayerOneMoveTimeStopwatch.Stop();
PlayerOneTotalTimeStopwatch.Stop();
if (Timer.IsEnabled)
{
PlayerTwoMoveTimeStopwatch.Restart();
PlayerTwoTotalTimeStopwatch.Start();
}
else
{
PlayerTwoMoveTimeStopwatch.Reset();
}
}
}
