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[director] Added variant BPM support.
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151 changes: 151 additions & 0 deletions
151
DereTore.Applications.StarlightDirector.Entities/Extensions/ScoreExtensions.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| using System.Linq; | ||
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| namespace DereTore.Applications.StarlightDirector.Entities.Extensions { | ||
| public static class ScoreExtensions { | ||
|
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| public static CompiledScore Compile(this Score score) { | ||
| var compiledScore = new CompiledScore(); | ||
| CompileTo(score, compiledScore); | ||
| return compiledScore; | ||
| } | ||
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| public static void CompileTo(this Score score, CompiledScore compiledScore) { | ||
| var settings = score.Project.Settings; | ||
| FlickGroupIDGenerator.Reset(); | ||
| var compiledNotes = compiledScore.Notes; | ||
| compiledNotes.Clear(); | ||
| var barTimeStart = settings.StartTimeOffset; | ||
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| // Clear the GroupID caches. | ||
| foreach (var bar in score.Bars) { | ||
| foreach (var note in bar.Notes) { | ||
| note.GroupID = EntityID.Invalid; | ||
| } | ||
| } | ||
|
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| // We can also use Note.GetNoteHitTiming(), but that requires massive loops. Therefore we manually expand them here. | ||
| foreach (var bar in score.Bars) { | ||
| var anyVariantBpm = bar.Notes.Any(note => note.Type == NoteType.VariantBpm); | ||
| double barTimeLength; | ||
| if (anyVariantBpm) { | ||
| barTimeLength = CompileBarConstantBpm(bar, barTimeStart, compiledNotes); | ||
| } else { | ||
| barTimeLength = CompileBarVariantBpm(bar, barTimeStart, compiledNotes); | ||
| } | ||
| barTimeStart += barTimeLength; | ||
| } | ||
|
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| // The normal gaming notes. | ||
| compiledNotes.Sort(CompiledNote.TimingComparison); | ||
| var i = 3; | ||
| foreach (var compiledNote in compiledNotes) { | ||
| compiledNote.ID = i++; | ||
| } | ||
|
|
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| // Special notes are added to their destined positions. | ||
| var totalNoteCount = compiledNotes.Count; | ||
| var scoreInfoNote = new CompiledNote { | ||
| ID = 1, | ||
| Type = NoteType.NoteCount, | ||
| FlickType = totalNoteCount | ||
| }; | ||
| var songStartNote = new CompiledNote { | ||
| ID = 2, | ||
| Type = NoteType.MusicStart | ||
| }; | ||
| compiledNotes.Insert(0, scoreInfoNote); | ||
| compiledNotes.Insert(1, songStartNote); | ||
| var songEndNote = new CompiledNote { | ||
| ID = i++, | ||
| Type = NoteType.MusicEnd, | ||
| HitTiming = barTimeStart | ||
| }; | ||
| compiledNotes.Add(songEndNote); | ||
| } | ||
|
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| private static double CompileBarConstantBpm(Bar bar, double timeStart, InternalList<CompiledNote> compiledNotes) { | ||
| var barTimeLength = bar.GetTimeLength(); | ||
| var totalGridCount = bar.GetTotalGridCount(); | ||
| // Sorting is for flick group generation. We have to assure that the start of each group is | ||
| // processed first, at least in the group which it is in. | ||
| bar.Notes.Sort(Note.TimingComparison); | ||
| foreach (var note in bar.Notes) { | ||
| var compiledNote = new CompiledNote(); | ||
| compiledNotes.Add(compiledNote); | ||
| SetCommonNoteProperties(note, compiledNote); | ||
| CalculateGroupID(note, compiledNote); | ||
| // Timing for constant BPM | ||
| compiledNote.HitTiming = timeStart + barTimeLength * note.IndexInGrid / totalGridCount; | ||
| } | ||
| return barTimeLength; | ||
| } | ||
|
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| private static double CompileBarVariantBpm(Bar bar, double timeStart, InternalList<CompiledNote> compiledNotes) { | ||
| var startBpm = bar.GetStartBpm(); | ||
| var signature = bar.GetActualSignature(); | ||
| var totalGridCount = bar.GetTotalGridCount(); | ||
| var barTimeLength = bar.GetTimeLength(); | ||
| // This sorting is for flick group generation AND Variant BPM notes. See Note.TimingComparison for more details. | ||
| bar.Notes.Sort(Note.TimingComparison); | ||
| var lastBpm = startBpm; | ||
| var lastVBIndex = 0; | ||
| var lastVBTiming = 0d; | ||
|
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| foreach (var note in bar.Notes) { | ||
| var deltaGridCount = note.IndexInGrid - lastVBIndex; | ||
| var timePerBeat = DirectorHelper.BpmToSeconds(lastBpm); | ||
| if (note.Type == NoteType.VariantBpm) { | ||
| lastVBTiming = lastVBTiming + timePerBeat * signature * deltaGridCount / totalGridCount; | ||
| lastBpm = note.ExtraParams.NewBpm; | ||
| lastVBIndex = note.IndexInGrid; | ||
| continue; | ||
| } | ||
| var compiledNote = new CompiledNote(); | ||
| compiledNotes.Add(compiledNote); | ||
| SetCommonNoteProperties(note, compiledNote); | ||
| CalculateGroupID(note, compiledNote); | ||
|
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| // Yeah for the maths. | ||
| var noteTimingInBar = lastVBTiming + timePerBeat * signature * deltaGridCount / totalGridCount; | ||
| compiledNote.HitTiming = timeStart + noteTimingInBar; | ||
| } | ||
| return barTimeLength; | ||
| } | ||
|
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| private static void SetCommonNoteProperties(Note note, CompiledNote compiledNote) { | ||
| compiledNote.Type = note.Type; | ||
| compiledNote.StartPosition = note.StartPosition; | ||
| compiledNote.FinishPosition = note.FinishPosition; | ||
| compiledNote.FlickType = (int)note.FlickType; | ||
| compiledNote.IsSync = note.IsSync; | ||
| } | ||
|
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| private static void CalculateGroupID(Note note, CompiledNote compiledNote) { | ||
| if (note.GroupID != EntityID.Invalid) { | ||
| compiledNote.FlickGroupID = note.GroupID; | ||
| } else { | ||
| int groupID; | ||
| FlickGroupModificationResult result; | ||
| Note groupStart; | ||
| if (!note.TryGetFlickGroupID(out result, out groupID, out groupStart)) { | ||
| // No need to set a group ID. E.g. the note is not a flick note. | ||
| return; | ||
| } | ||
| switch (result) { | ||
| case FlickGroupModificationResult.Reused: | ||
| note.GroupID = compiledNote.FlickGroupID = groupID; | ||
| break; | ||
| case FlickGroupModificationResult.CreationPending: | ||
| groupID = FlickGroupIDGenerator.Next(); | ||
| groupStart.GroupID = note.GroupID = compiledNote.FlickGroupID = groupID; | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
| } | ||
|
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| private static readonly IntegerIDGenerator FlickGroupIDGenerator = new IntegerIDGenerator(1); | ||
|
|
||
| } | ||
| } |
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