async public void PlayRound(TimeSpan roundTimeSpan)
{
DateTime endTime = DateTime.Now + roundTimeSpan;
score = 0;
await App.Current.InvokeOnUIThread(
() =>
{
ScoreBlock.Text = "0";
});
while (DateTime.Now < endTime)
{
LightPin.Write(LedOffState);
await App.Current.InvokeOnUIThread(
() =>
{
LedEllipse.Fill = grayBrush;
});
if (SwitchPin.Read() != ButtonPressedState)
{
await waitForStart();
}
await RandomWait();
await App.Current.InvokeOnUIThread(
() =>
{
ScoreBlock.Text = score.ToString();
});
}
}
void performDelay(float delayInMilliseconds)
{
timerStarts = DateTime.Now;
waitComplete = false;
using (EventWaitHandle tmpEvent = new ManualResetEvent(false))
{
tmpEvent.WaitOne(TimeSpan.FromMilliseconds(delayInMilliseconds));
}
timerEnds = DateTime.Now;
LightPin.Write(LedOffState);
App.Current.InvokeOnUIThread(
() =>
{
Timeblock.Text = "Press the button to start";
LedEllipse.Fill = grayBrush;
});
waitComplete = true;
}
async Task RandomWait()
{
await App.Current.InvokeOnUIThread(
() =>
{
Timeblock.Text = "Waiting";
});
LightPin.Write(LedLitState);
await App.Current.InvokeOnUIThread(
() =>
{
LedEllipse.Fill = LitBrush;
});
string message = "";
DateTime buttonReleased;
var tcs = new TaskCompletionSource <object>();
TypedEventHandler <GpioPin, GpioPinValueChangedEventArgs> waitingLambda = (s, e) =>
{
if (s.Read() != ButtonPressedState)
{
if (!waitComplete)
{
message = "Fail";
score = score + 10000;
}
else
{
buttonReleased = DateTime.Now;
TimeSpan reactionTime = buttonReleased - timerEnds;
score = score + reactionTime.Milliseconds;
message = "Score:" + score.ToString();
}
tcs.TrySetResult(null);
}
};
try
{
SwitchPin.ValueChanged += waitingLambda;
int delayTime = playerRand.Next(1000, 3000);
launchDelay(delayTime);
await tcs.Task;
}
finally
{
SwitchPin.ValueChanged -= waitingLambda;
}
await App.Current.InvokeOnUIThread(
() =>
{
Timeblock.Text = message;
});
}