private async Task AddSingleHitObject(RawHitObject obj, HashSet <string> waves,
ConcurrentBag <SoundElement> elements)
{
if (obj.ObjectType != HitObjectType.Slider)
{
var itemOffset = obj.ObjectType == HitObjectType.Spinner
? obj.HoldEnd // spinner
: obj.Offset; // hold & circle
var timingPoint = _osuFile.TimingPoints.GetLine(itemOffset);
float balance = GetObjectBalance(obj.X);
float volume = GetObjectVolume(obj, timingPoint);
var tuples = AnalyzeHitsoundFiles(obj.Hitsound, obj.SampleSet, obj.AdditionSet,
timingPoint, obj, waves);
foreach (var(filePath, _) in tuples)
{
var element = SoundElement.Create(itemOffset, volume, balance, filePath);
elements.Add(element);
}
}
else // sliders
{
// edges
bool forceUseSlide = obj.SliderInfo.EdgeSamples == null;
foreach (var item in obj.SliderInfo.Edges)
{
var itemOffset = item.Offset;
var timingPoint = _osuFile.TimingPoints.GetLine(itemOffset);
float balance = GetObjectBalance(item.Point.X);
float volume = GetObjectVolume(obj, timingPoint);
var hs = forceUseSlide
? obj.Hitsound
: item.EdgeHitsound;
var addition = forceUseSlide
? obj.AdditionSet
: item.EdgeAddition;
var sample = forceUseSlide
? obj.SampleSet
: item.EdgeSample;
var tuples = AnalyzeHitsoundFiles(hs, sample, addition,
timingPoint, obj, waves);
foreach (var(filePath, _) in tuples)
{
var element = SoundElement.Create(itemOffset, volume, balance, filePath);
elements.Add(element);
}
}
// ticks
var ticks = obj.SliderInfo.Ticks;
foreach (var sliderTick in ticks)
{
var itemOffset = sliderTick.Offset;
var timingPoint = _osuFile.TimingPoints.GetLine(itemOffset);
float balance = GetObjectBalance(sliderTick.Point.X);
float volume = GetObjectVolume(obj, timingPoint) * 1.25f; // ticks x1.25
var(filePath, _) = AnalyzeHitsoundFiles(HitsoundType.Tick, obj.SampleSet, obj.AdditionSet,
timingPoint, obj, waves).First();
var element = SoundElement.Create(itemOffset, volume, balance, filePath);
elements.Add(element);
}
// sliding
{
var slideElements = new List <SoundElement>();
var startOffset = obj.Offset;
var endOffset = obj.SliderInfo.Edges[obj.SliderInfo.Edges.Length - 1].Offset;
var timingPoint = _osuFile.TimingPoints.GetLine(startOffset);
float balance = GetObjectBalance(obj.X);
float volume = GetObjectVolume(obj, timingPoint);
// start sliding
var tuples = AnalyzeHitsoundFiles(
obj.Hitsound & HitsoundType.SlideWhistle | HitsoundType.Slide,
obj.SampleSet, obj.AdditionSet,
timingPoint, obj, waves);
foreach (var(filePath, hitsoundType) in tuples)
{
int channel;
if (hitsoundType.HasFlag(HitsoundType.Slide))
{
channel = 0;
}
else if (hitsoundType.HasFlag(HitsoundType.SlideWhistle))
{
channel = 1;
}
else
{
continue;
}
var element = SoundElement.CreateLoopSignal(startOffset, volume, balance, filePath, channel);
slideElements.Add(element);
}
// change sample (will optimize if only adjust volume) by inherit timing point
var timingsOnSlider = _osuFile.TimingPoints.TimingList
.Where(k => k.Offset > startOffset && k.Offset < endOffset)
.ToList();
for (var i = 0; i < timingsOnSlider.Count; i++)
{
var timing = timingsOnSlider[i];
var prevTiming = i == 0 ? timingPoint : timingsOnSlider[i - 1];
if (timing.Track != prevTiming.Track ||
timing.TimingSampleset != prevTiming.TimingSampleset)
{
volume = GetObjectVolume(obj, timing);
tuples = AnalyzeHitsoundFiles(
obj.Hitsound & HitsoundType.SlideWhistle | HitsoundType.Slide,
obj.SampleSet, obj.AdditionSet,
timing, obj, waves);
foreach (var(filePath, hitsoundType) in tuples)
{
SoundElement element;
if (hitsoundType.HasFlag(HitsoundType.Slide) && slideElements
.Last(k => k.PlaybackType == PlaybackType.Loop)
.FilePath == filePath)
{
// optimize by only change volume
element = SoundElement.CreateLoopVolumeSignal(timing.Offset, volume);
}
else
{
int channel;
if (hitsoundType.HasFlag(HitsoundType.Slide))
{
channel = 0;
}
else if (hitsoundType.HasFlag(HitsoundType.SlideWhistle))
{
channel = 1;
}
else
{
continue;
}
// new sample
element = SoundElement.CreateLoopSignal(timing.Offset, volume, balance,
filePath, channel);
}
slideElements.Add(element);
}
continue;
}
// optimize useless timing point
timingsOnSlider.RemoveAt(i);
i--;
}
// end slide
var stopElement = SoundElement.CreateLoopStopSignal(endOffset, 0);
var stopElement2 = SoundElement.CreateLoopStopSignal(endOffset, 1);
slideElements.Add(stopElement);
slideElements.Add(stopElement2);
foreach (var slideElement in slideElements)
{
elements.Add(slideElement);
}
}
// change balance while sliding (not supported in original game)
var trails = obj.SliderInfo.BallTrail;
var all = trails
.Select(k => new
{
offset = k.Offset,
balance = GetObjectBalance(k.Point.X)
})
.Select(k => SoundElement.CreateLoopBalanceSignal(k.offset, k.balance));
foreach (var balanceElement in all)
{
elements.Add(balanceElement);
}
}
await Task.CompletedTask;
}
