public bool Start(SoundSource music, int startTick)
{
if (Playing)
{
throw new InvalidOperationException();
}
if (music == null)
{
throw new ArgumentNullException("music");
}
SoundManager.Register(ClapSource.FilePath);
SoundManager.Register(music.FilePath);
EndTick = IsStopAtLastNote ? NoteView.Notes.GetLastTick() : GetTickFromTime(SoundManager.GetDuration(music.FilePath), NoteView.ScoreEvents.BPMChangeEvents);
if (EndTick < startTick)
{
return(false);
}
var tickSet = new HashSet <int>();
var notes = NoteView.Notes;
var shortNotesTick = notes.Taps.Cast <TappableBase>().Concat(notes.ExTaps).Concat(notes.Flicks).Concat(notes.Damages).Select(p => p.Tick);
var holdsTick = notes.Holds.SelectMany(p => new int[] { p.StartTick, p.StartTick + p.Duration });
var slidesTick = notes.Slides.SelectMany(p => new int[] { p.StartTick }.Concat(p.StepNotes.Where(q => q.IsVisible).Select(q => q.Tick)));
var airActionsTick = notes.AirActions.SelectMany(p => p.ActionNotes.Select(q => p.StartTick + q.Offset));
foreach (int tick in shortNotesTick.Concat(holdsTick).Concat(slidesTick).Concat(airActionsTick))
{
tickSet.Add(tick);
}
TickElement = new LinkedList <int?>(tickSet.Where(p => p >= startTick).OrderBy(p => p).Select(p => new int?(p))).First;
BPMElement = new LinkedList <BPMChangeEvent>(NoteView.ScoreEvents.BPMChangeEvents.OrderBy(p => p.Tick)).First;
// スタート時まで進める
while (TickElement != null && TickElement.Value < startTick)
{
TickElement = TickElement.Next;
}
while (BPMElement.Next != null && BPMElement.Next.Value.Tick <= startTick)
{
BPMElement = BPMElement.Next;
}
int clapLatencyTick = GetLatencyTick(ClapSource.Latency, (double)BPMElement.Value.BPM);
InitialTick = startTick - clapLatencyTick;
CurrentTick = InitialTick;
StartTick = startTick;
TimeSpan startTime = GetTimeFromTick(startTick, NoteView.ScoreEvents.BPMChangeEvents);
TimeSpan headGap = TimeSpan.FromSeconds(-music.Latency) - startTime;
elapsedTick = 0;
Task.Run(() =>
{
LastSystemTick = Environment.TickCount;
NoteView.Invoke((MethodInvoker)(() => Timer.Start()));
System.Threading.Thread.Sleep(TimeSpan.FromSeconds(Math.Max(ClapSource.Latency, 0)));
if (headGap.TotalSeconds > 0)
{
System.Threading.Thread.Sleep(headGap);
}
if (!Playing)
{
return;
}
SoundManager.Play(music.FilePath, startTime + TimeSpan.FromSeconds(music.Latency));
})
.ContinueWith(p =>
{
if (p.Exception != null)
{
Program.DumpExceptionTo(p.Exception, "sound_exception.json");
ExceptionThrown?.Invoke(this, EventArgs.Empty);
}
});
Playing = true;
return(true);
}
