protected static bool TryGetChartType(Chart chart, out SMCommon.ChartType chartType)
{
// If the Chart's Type is already a supported ChartType, use that.
if (SMCommon.TryGetChartType(chart.Type, out chartType))
{
return(true);
}
// Otherwise infer the ChartType from the number of inputs and players
chartType = SMCommon.ChartType.dance_single;
if (chart.NumPlayers == 1)
{
if (chart.NumInputs <= 3)
{
chartType = SMCommon.ChartType.dance_threepanel;
return(true);
}
if (chart.NumInputs == 4)
{
chartType = SMCommon.ChartType.dance_single;
return(true);
}
if (chart.NumInputs <= 6)
{
chartType = SMCommon.ChartType.dance_solo;
return(true);
}
if (chart.NumInputs <= 8)
{
chartType = SMCommon.ChartType.dance_double;
return(true);
}
}
if (chart.NumPlayers == 2)
{
if (chart.NumInputs <= 8)
{
chartType = SMCommon.ChartType.dance_routine;
return(true);
}
}
return(false);
}
public override bool Parse(MSDFile.Value value)
{
// Only consider this line if it matches this property name.
if (!ParseFirstParameter(value, out var type))
{
return(false);
}
Chart.Type = type;
// Parse chart type and set number of players and inputs.
if (!SMCommon.TryGetChartType(Chart.Type, out var smChartType))
{
Chart.Type = null;
Logger?.Error($"{PropertyName}: Failed to parse {SMCommon.TagStepsType} value '{smChartType}'. This chart will be ignored.");
return(true);
}
Chart.NumPlayers = SMCommon.Properties[(int)smChartType].NumPlayers;
Chart.NumInputs = SMCommon.Properties[(int)smChartType].NumInputs;
Chart.Extras.AddSourceExtra(SMCommon.TagStepsType, Chart.Type, true);
return(true);
}
/// <summary>
/// Load the sm file specified by the provided file path.
/// </summary>
public override async Task <Song> Load()
{
// Load the file as an MSDFile.
var msdFile = new MSDFile();
var result = await msdFile.Load(FilePath);
if (!result)
{
Logger.Error("Failed to load MSD File.");
return(null);
}
var tempos = new Dictionary <double, double>();
var stops = new Dictionary <double, double>();
var song = new Song();
song.SourceType = FileFormatType.SM;
var propertyParsers = new Dictionary <string, PropertyParser>()
{
[SMCommon.TagTitle] = new PropertyToSongPropertyParser(SMCommon.TagTitle, nameof(Song.Title), song),
[SMCommon.TagSubtitle] = new PropertyToSongPropertyParser(SMCommon.TagSubtitle, nameof(Song.SubTitle), song),
[SMCommon.TagArtist] = new PropertyToSongPropertyParser(SMCommon.TagArtist, nameof(Song.Artist), song),
[SMCommon.TagTitleTranslit] = new PropertyToSongPropertyParser(SMCommon.TagTitleTranslit, nameof(Song.TitleTransliteration), song),
[SMCommon.TagSubtitleTranslit] = new PropertyToSongPropertyParser(SMCommon.TagSubtitleTranslit, nameof(Song.SubTitleTransliteration), song),
[SMCommon.TagArtistTranslit] = new PropertyToSongPropertyParser(SMCommon.TagArtistTranslit, nameof(Song.ArtistTransliteration), song),
[SMCommon.TagGenre] = new PropertyToSongPropertyParser(SMCommon.TagGenre, nameof(Song.Genre), song),
[SMCommon.TagCredit] = new PropertyToSourceExtrasParser <string>(SMCommon.TagCredit, song.Extras),
[SMCommon.TagBanner] = new PropertyToSongPropertyParser(SMCommon.TagBanner, nameof(Song.SongSelectImage), song),
[SMCommon.TagBackground] = new PropertyToSourceExtrasParser <string>(SMCommon.TagBackground, song.Extras),
[SMCommon.TagLyricsPath] = new PropertyToSourceExtrasParser <string>(SMCommon.TagLyricsPath, song.Extras),
[SMCommon.TagCDTitle] = new PropertyToSourceExtrasParser <string>(SMCommon.TagCDTitle, song.Extras),
[SMCommon.TagMusic] = new PropertyToSourceExtrasParser <string>(SMCommon.TagMusic, song.Extras),
[SMCommon.TagOffset] = new PropertyToSourceExtrasParser <double>(SMCommon.TagOffset, song.Extras),
[SMCommon.TagBPMs] = new CSVListAtTimePropertyParser <double>(SMCommon.TagBPMs, tempos, song.Extras, SMCommon.TagFumenRawBpmsStr),
[SMCommon.TagStops] = new CSVListAtTimePropertyParser <double>(SMCommon.TagStops, stops, song.Extras, SMCommon.TagFumenRawStopsStr),
[SMCommon.TagFreezes] = new CSVListAtTimePropertyParser <double>(SMCommon.TagFreezes, stops),
[SMCommon.TagDelays] = new PropertyToSourceExtrasParser <string>(SMCommon.TagDelays, song.Extras),
// Removed, see https://github.com/stepmania/stepmania/issues/9
[SMCommon.TagTimeSignatures] = new PropertyToSourceExtrasParser <string>(SMCommon.TagTimeSignatures, song.Extras),
[SMCommon.TagTickCounts] = new PropertyToSourceExtrasParser <string>(SMCommon.TagTickCounts, song.Extras),
[SMCommon.TagInstrumentTrack] = new PropertyToSourceExtrasParser <string>(SMCommon.TagInstrumentTrack, song.Extras),
[SMCommon.TagSampleStart] = new PropertyToSongPropertyParser(SMCommon.TagSampleStart, nameof(Song.PreviewSampleStart), song),
[SMCommon.TagSampleLength] = new PropertyToSongPropertyParser(SMCommon.TagSampleLength, nameof(Song.PreviewSampleLength), song),
[SMCommon.TagDisplayBPM] = new ListPropertyToSourceExtrasParser <string>(SMCommon.TagDisplayBPM, song.Extras),
[SMCommon.TagSelectable] = new PropertyToSourceExtrasParser <string>(SMCommon.TagSelectable, song.Extras),
[SMCommon.TagAnimations] = new PropertyToSourceExtrasParser <string>(SMCommon.TagAnimations, song.Extras),
[SMCommon.TagBGChanges] = new PropertyToSourceExtrasParser <string>(SMCommon.TagBGChanges, song.Extras),
[SMCommon.TagBGChanges1] = new PropertyToSourceExtrasParser <string>(SMCommon.TagBGChanges1, song.Extras),
[SMCommon.TagBGChanges2] = new PropertyToSourceExtrasParser <string>(SMCommon.TagBGChanges2, song.Extras),
[SMCommon.TagFGChanges] = new PropertyToSourceExtrasParser <string>(SMCommon.TagFGChanges, song.Extras),
// TODO: Parse Keysounds properly.
[SMCommon.TagKeySounds] = new PropertyToSourceExtrasParser <string>(SMCommon.TagKeySounds, song.Extras),
[SMCommon.TagAttacks] = new ListPropertyToSourceExtrasParser <string>(SMCommon.TagAttacks, song.Extras),
[SMCommon.TagNotes] = new SongNotesPropertyParser(SMCommon.TagNotes, song),
[SMCommon.TagNotes2] = new SongNotesPropertyParser(SMCommon.TagNotes2, song),
[SMCommon.TagLastBeatHint] = new PropertyToSourceExtrasParser <string>(SMCommon.TagLastBeatHint, song.Extras),
};
foreach (var kvp in propertyParsers)
{
kvp.Value.SetLogger(Logger);
}
// Parse all Values from the MSDFile.
foreach (var value in msdFile.Values)
{
if (propertyParsers.TryGetValue(value.Params[0]?.ToUpper() ?? "", out var propertyParser))
{
propertyParser.Parse(value);
}
}
// Insert stop and tempo change events.
foreach (var chart in song.Charts)
{
SMCommon.AddStops(stops, chart);
SMCommon.AddTempos(tempos, chart);
}
// Sort events.
foreach (var chart in song.Charts)
{
chart.Layers[0].Events.Sort(new SMCommon.SMEventComparer());
}
song.GenreTransliteration = song.Genre;
var chartOffset = 0.0;
if (song.Extras.TryGetSourceExtra(SMCommon.TagOffset, out object offsetObj))
{
chartOffset = (double)offsetObj;
}
var chartMusicFile = "";
if (song.Extras.TryGetSourceExtra(SMCommon.TagMusic, out object chartMusicFileObj))
{
chartMusicFile = (string)chartMusicFileObj;
}
var chartAuthor = "";
if (song.Extras.TryGetSourceExtra(SMCommon.TagCredit, out object chartAuthorObj))
{
chartAuthor = (string)chartAuthorObj;
}
var chartDisplayTempo = SMCommon.GetDisplayBPMStringFromSourceExtrasList(song.Extras, tempos);
foreach (var chart in song.Charts)
{
chart.MusicFile = chartMusicFile;
chart.ChartOffsetFromMusic = chartOffset;
chart.Tempo = chartDisplayTempo;
chart.Artist = song.Artist;
chart.ArtistTransliteration = song.ArtistTransliteration;
chart.Genre = song.Genre;
chart.GenreTransliteration = song.GenreTransliteration;
chart.Author = chartAuthor;
SMCommon.SetEventTimeMicros(chart);
}
return(song);
}
private void FinalizeChartAndAddToSong(
Chart chart,
Dictionary <double, double> chartTempos,
Dictionary <double, double> chartStops,
Song song,
Dictionary <double, double> songTempos,
Dictionary <double, double> songStops)
{
// Do not add this Chart if we failed to parse the type.
if (string.IsNullOrEmpty(chart.Type))
{
return;
}
var useChartTimingData = false;
if (chart.Extras.TryGetSourceExtra(SMCommon.TagFumenChartUsesOwnTimingData, out object useTimingDataObject))
{
if (useTimingDataObject is bool b)
{
useChartTimingData = b;
}
}
// Insert stop and tempo change events.
SMCommon.AddStops(useChartTimingData ? chartStops : songStops, chart);
SMCommon.AddTempos(useChartTimingData ? chartTempos : songTempos, chart);
// Sort events.
chart.Layers[0].Events.Sort(new SMCommon.SMEventComparer());
// Copy Song information over missing Chart information.
if (string.IsNullOrEmpty(chart.MusicFile))
{
var chartMusicFile = "";
if (song.Extras.TryGetSourceExtra(SMCommon.TagMusic, out object chartMusicFileObj))
{
chartMusicFile = (string)chartMusicFileObj;
}
if (!string.IsNullOrEmpty(chartMusicFile))
{
chart.MusicFile = chartMusicFile;
}
}
if (string.IsNullOrEmpty(chart.Author))
{
var chartAuthor = "";
if (song.Extras.TryGetSourceExtra(SMCommon.TagCredit, out object chartAuthorObj))
{
chartAuthor = (string)chartAuthorObj;
}
if (!string.IsNullOrEmpty(chartAuthor))
{
chart.Author = chartAuthor;
}
}
if (string.IsNullOrEmpty(chart.Artist) && !string.IsNullOrEmpty(song.Artist))
{
chart.Artist = song.Artist;
}
if (string.IsNullOrEmpty(chart.ArtistTransliteration) && !string.IsNullOrEmpty(song.ArtistTransliteration))
{
chart.ArtistTransliteration = song.ArtistTransliteration;
}
if (string.IsNullOrEmpty(chart.Genre) && !string.IsNullOrEmpty(song.Genre))
{
chart.Genre = song.Genre;
}
if (string.IsNullOrEmpty(chart.GenreTransliteration) && !string.IsNullOrEmpty(song.GenreTransliteration))
{
chart.GenreTransliteration = song.GenreTransliteration;
}
if (!chart.Extras.TryGetSourceExtra(SMCommon.TagOffset, out object _) &&
song.Extras.TryGetSourceExtra(SMCommon.TagOffset, out object offsetObj))
{
chart.ChartOffsetFromMusic = (double)offsetObj;
}
if (!chart.Extras.TryGetSourceExtra(SMCommon.TagDisplayBPM, out object _))
{
chart.Tempo = SMCommon.GetDisplayBPMStringFromSourceExtrasList(
song.Extras,
useChartTimingData ? chartTempos : songTempos);
}
SMCommon.SetEventTimeMicros(chart);
// Add the Chart.
song.Charts.Add(chart);
}
private void WriteMeasure(Chart chart, MeasureData measureData, int measureIndex)
{
// For UseLeastCommonMultiple and UseLeastCommonMultipleFromStepmaniaEditor we will
// determine the number of lines to write per beat, assuming 4 beats per measure since
// Stepmania enforces 4/4.
// For UseSubDivisionDenominatorAsMeasureSpacing we will use the SubDivision denominator
// as the measure spacing.
// This helps maintain spacing for charts which were not written in Stepmania and
// use technically unsupported spacing (like 14 notes per measure).
var linesPerBeat = 1;
var measureCharsDY = 0;
switch (Config.MeasureSpacingBehavior)
{
case MeasureSpacingBehavior.UseSubDivisionDenominatorAsMeasureSpacing:
{
if (measureData.Notes.Count > 0)
{
foreach (var measureNote in measureData.Notes)
{
// Every note must also have the same denominator (number of lines in the measure).
if (measureCharsDY == 0)
{
measureCharsDY = measureNote.Position.SubDivision.Denominator;
}
else if (measureCharsDY != measureNote.Position.SubDivision.Denominator)
{
Logger.Error($"Notes in measure {measureIndex} have inconsistent SubDivision denominators."
+ " These must all be equal when using UseSubDivisionDenominatorAsMeasureSpacing MeasureSpacingBehavior.");
return;
}
}
}
// Still treat blank measures as 4 lines.
else
{
measureCharsDY = SMCommon.NumBeatsPerMeasure;
}
break;
}
case MeasureSpacingBehavior.UseLeastCommonMultiple:
{
linesPerBeat = measureData.LCM;
measureCharsDY = SMCommon.NumBeatsPerMeasure * linesPerBeat;
break;
}
case MeasureSpacingBehavior.UseLeastCommonMultipleFromStepmaniaEditor:
{
// Make sure the notes can actually be represented by the stepmania editor.
if (!SMCommon.GetLowestValidSMSubDivision(measureData.LCM, out linesPerBeat))
{
Logger.Error($"Unsupported subdivisions {measureData.LCM} for notes in measure index {measureIndex}."
+ " Consider using UseLeastCommonMultiple MeasureSpacingBehavior.");
return;
}
measureCharsDY = SMCommon.NumBeatsPerMeasure * linesPerBeat;
break;
}
}
// Set up a grid of characters to write.
// TODO: Support keysound tagging.
var measureCharsDX = chart.NumInputs;
var measureChars = new char[measureCharsDX, measureCharsDY];
// Populate characters in the grid based on the events of the measure.
foreach (var measureNote in measureData.Notes)
{
// Get the note char to write.
var c = GetSMCharForNote(measureNote);
// Determine the position to record the note.
var reducedSubDivision = measureNote.Position.SubDivision.Reduce();
int measureEventPositionInMeasure;
// When using UseSubDivisionDenominatorAsMeasureSpacing, get the y position directly from the extra data.
if (Config.MeasureSpacingBehavior == MeasureSpacingBehavior.UseSubDivisionDenominatorAsMeasureSpacing)
{
var n = measureNote.Position.Beat * measureCharsDY + measureNote.Position.SubDivision.Numerator;
if (n % SMCommon.NumBeatsPerMeasure != 0)
{
Logger.Error($"Note at position {measureNote.Position} has a position which cannot be mapped to {measureCharsDY} lines."
+ " When using UseSubDivisionDenominatorAsMeasureSpacing MeasureSpacingBehavior the notes in one measure must"
+ " all share the same SubDivision denominator and that denominator must be the number of lines for the measure.");
return;
}
measureEventPositionInMeasure = n / SMCommon.NumBeatsPerMeasure;
}
// Otherwise calculate the position based on the lines per beat.
else
{
measureEventPositionInMeasure = measureNote.Position.Beat * linesPerBeat
+ (linesPerBeat / Math.Max(1, reducedSubDivision.Denominator))
* reducedSubDivision.Numerator;
}
// Bounds checks.
if (measureNote.Lane < 0 || measureNote.Lane >= chart.NumInputs)
{
Logger.Error($"Note at position {measureNote.Position} has invalid lane {measureNote.Lane}.");
return;
}
if (measureEventPositionInMeasure < 0 || measureEventPositionInMeasure >= measureCharsDY)
{
Logger.Error($"Note has invalid position {measureNote.Position}.");
return;
}
// Record the note.
measureChars[measureNote.Lane, measureEventPositionInMeasure] = c;
}
// Write the measure of accumulated characters.
if (!measureData.FirstMeasure)
{
StreamWriter.WriteLine(",");
}
for (var y = 0; y < measureCharsDY; y++)
{
for (var x = 0; x < measureCharsDX; x++)
{
StreamWriter.Write(measureChars[x, y] == '\0' ?
SMCommon.NoteChars[(int)SMCommon.NoteType.None]
: measureChars[x, y]);
}
StreamWriter.WriteLine();
}
}
public override bool Parse(MSDFile.Value value)
{
// Only consider this line if it matches this property name.
if (!DoesValueMatchProperty(value))
{
return(false);
}
if (value.Params.Count < 7)
{
Logger?.Warn($"{PropertyName}: Expected at least 7 parameters. Found {value.Params.Count}. Ignoring all note data.");
return(true);
}
var chart = new Chart
{
Type = value.Params[1]?.Trim(SMCommon.SMAllWhiteSpace) ?? "",
Description = value.Params[2]?.Trim(SMCommon.SMAllWhiteSpace) ?? "",
DifficultyType = value.Params[3]?.Trim(SMCommon.SMAllWhiteSpace) ?? ""
};
chart.Layers.Add(new Layer());
// Record whether this chart was written under NOTES or NOTES2.
chart.Extras.AddSourceExtra(SMCommon.TagFumenNotesType, PropertyName, true);
// Parse the chart information before measure data.
var chartDifficultyRatingStr = value.Params[4]?.Trim(SMCommon.SMAllWhiteSpace) ?? "";
var chartRadarValuesStr = value.Params[5]?.Trim(SMCommon.SMAllWhiteSpace) ?? "";
// Parse the difficulty rating as a number.
if (int.TryParse(chartDifficultyRatingStr, out var difficultyRatingInt))
{
chart.DifficultyRating = (double)difficultyRatingInt;
}
// Parse the radar values into a list.
var radarValues = new List <double>();
var radarValuesStr = chartRadarValuesStr.Split(',');
foreach (var radarValueStr in radarValuesStr)
{
if (double.TryParse(radarValueStr, out var d))
{
radarValues.Add(d);
}
}
chart.Extras.AddSourceExtra(SMCommon.TagRadarValues, radarValues, true);
// Parse chart type and set number of players and inputs.
if (!SMCommon.TryGetChartType(chart.Type, out var smChartType))
{
Logger?.Error($"{PropertyName}: Failed to parse {SMCommon.TagStepsType} value '{chart.Type}'. This chart will be ignored.");
return(true);
}
chart.NumPlayers = SMCommon.Properties[(int)smChartType].NumPlayers;
chart.NumInputs = SMCommon.Properties[(int)smChartType].NumInputs;
// Add a 4/4 time signature
chart.Layers[0].Events.Add(new TimeSignature(new Fraction(SMCommon.NumBeatsPerMeasure, SMCommon.NumBeatsPerMeasure))
{
Position = new MetricPosition()
});
// Parse the notes.
if (!ParseNotes(chart, value.Params[6] ?? ""))
{
return(true);
}
Song.Charts.Add(chart);
return(true);
}