mirror of
https://github.com/ppy/osu.git
synced 2024-09-22 15:27:26 +08:00
412 lines
15 KiB
C#
412 lines
15 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
|
|
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
|
|
|
|
using System;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using osu.Game.Beatmaps.Timing;
|
|
using osu.Game.Rulesets.Objects.Legacy;
|
|
using osu.Game.Beatmaps.ControlPoints;
|
|
|
|
namespace osu.Game.Beatmaps.Formats
|
|
{
|
|
public class LegacyBeatmapDecoder : LegacyDecoder<Beatmap>
|
|
{
|
|
public const int LATEST_VERSION = 14;
|
|
|
|
private Beatmap beatmap;
|
|
|
|
private ConvertHitObjectParser parser;
|
|
|
|
private LegacySampleBank defaultSampleBank;
|
|
private int defaultSampleVolume = 100;
|
|
|
|
public static void Register()
|
|
{
|
|
AddDecoder<Beatmap>(@"osu file format v", m => new LegacyBeatmapDecoder(int.Parse(m.Split('v').Last())));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Whether or not beatmap or runtime offsets should be applied. Defaults on; only disable for testing purposes.
|
|
/// </summary>
|
|
public bool ApplyOffsets = true;
|
|
|
|
private readonly int offset;
|
|
|
|
public LegacyBeatmapDecoder(int version = LATEST_VERSION)
|
|
: base(version)
|
|
{
|
|
// BeatmapVersion 4 and lower had an incorrect offset (stable has this set as 24ms off)
|
|
offset = FormatVersion < 5 ? 24 : 0;
|
|
}
|
|
|
|
protected override void ParseStreamInto(StreamReader stream, Beatmap beatmap)
|
|
{
|
|
this.beatmap = beatmap;
|
|
this.beatmap.BeatmapInfo.BeatmapVersion = FormatVersion;
|
|
|
|
base.ParseStreamInto(stream, beatmap);
|
|
|
|
// Objects may be out of order *only* if a user has manually edited an .osu file.
|
|
// Unfortunately there are ranked maps in this state (example: https://osu.ppy.sh/s/594828).
|
|
// OrderBy is used to guarantee that the parsing order of hitobjects with equal start times is maintained (stably-sorted)
|
|
// The parsing order of hitobjects matters in mania difficulty calculation
|
|
this.beatmap.HitObjects = this.beatmap.HitObjects.OrderBy(h => h.StartTime).ToList();
|
|
|
|
foreach (var hitObject in this.beatmap.HitObjects)
|
|
hitObject.ApplyDefaults(this.beatmap.ControlPointInfo, this.beatmap.BeatmapInfo.BaseDifficulty);
|
|
}
|
|
|
|
protected override bool ShouldSkipLine(string line) => base.ShouldSkipLine(line) || line.StartsWith(" ") || line.StartsWith("_");
|
|
|
|
protected override void ParseLine(Beatmap beatmap, Section section, string line)
|
|
{
|
|
var stripped_line = StripComments(line);
|
|
|
|
switch (section)
|
|
{
|
|
case Section.General:
|
|
handleGeneral(stripped_line);
|
|
return;
|
|
case Section.Editor:
|
|
handleEditor(stripped_line);
|
|
return;
|
|
case Section.Metadata:
|
|
handleMetadata(line);
|
|
return;
|
|
case Section.Difficulty:
|
|
handleDifficulty(stripped_line);
|
|
return;
|
|
case Section.Events:
|
|
handleEvent(stripped_line);
|
|
return;
|
|
case Section.TimingPoints:
|
|
handleTimingPoint(stripped_line);
|
|
return;
|
|
case Section.HitObjects:
|
|
handleHitObject(stripped_line);
|
|
return;
|
|
}
|
|
|
|
base.ParseLine(beatmap, section, stripped_line);
|
|
}
|
|
|
|
private void handleGeneral(string line)
|
|
{
|
|
var pair = SplitKeyVal(line);
|
|
|
|
var metadata = beatmap.BeatmapInfo.Metadata;
|
|
switch (pair.Key)
|
|
{
|
|
case @"AudioFilename":
|
|
metadata.AudioFile = pair.Value;
|
|
break;
|
|
case @"AudioLeadIn":
|
|
beatmap.BeatmapInfo.AudioLeadIn = int.Parse(pair.Value);
|
|
break;
|
|
case @"PreviewTime":
|
|
metadata.PreviewTime = getOffsetTime(int.Parse(pair.Value));
|
|
break;
|
|
case @"Countdown":
|
|
beatmap.BeatmapInfo.Countdown = int.Parse(pair.Value) == 1;
|
|
break;
|
|
case @"SampleSet":
|
|
defaultSampleBank = (LegacySampleBank)Enum.Parse(typeof(LegacySampleBank), pair.Value);
|
|
break;
|
|
case @"SampleVolume":
|
|
defaultSampleVolume = int.Parse(pair.Value);
|
|
break;
|
|
case @"StackLeniency":
|
|
beatmap.BeatmapInfo.StackLeniency = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"Mode":
|
|
beatmap.BeatmapInfo.RulesetID = int.Parse(pair.Value);
|
|
|
|
switch (beatmap.BeatmapInfo.RulesetID)
|
|
{
|
|
case 0:
|
|
parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
|
|
break;
|
|
case 1:
|
|
parser = new Rulesets.Objects.Legacy.Taiko.ConvertHitObjectParser();
|
|
break;
|
|
case 2:
|
|
parser = new Rulesets.Objects.Legacy.Catch.ConvertHitObjectParser();
|
|
break;
|
|
case 3:
|
|
parser = new Rulesets.Objects.Legacy.Mania.ConvertHitObjectParser();
|
|
break;
|
|
}
|
|
|
|
break;
|
|
case @"LetterboxInBreaks":
|
|
beatmap.BeatmapInfo.LetterboxInBreaks = int.Parse(pair.Value) == 1;
|
|
break;
|
|
case @"SpecialStyle":
|
|
beatmap.BeatmapInfo.SpecialStyle = int.Parse(pair.Value) == 1;
|
|
break;
|
|
case @"WidescreenStoryboard":
|
|
beatmap.BeatmapInfo.WidescreenStoryboard = int.Parse(pair.Value) == 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void handleEditor(string line)
|
|
{
|
|
var pair = SplitKeyVal(line);
|
|
|
|
switch (pair.Key)
|
|
{
|
|
case @"Bookmarks":
|
|
beatmap.BeatmapInfo.StoredBookmarks = pair.Value;
|
|
break;
|
|
case @"DistanceSpacing":
|
|
beatmap.BeatmapInfo.DistanceSpacing = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"BeatDivisor":
|
|
beatmap.BeatmapInfo.BeatDivisor = int.Parse(pair.Value);
|
|
break;
|
|
case @"GridSize":
|
|
beatmap.BeatmapInfo.GridSize = int.Parse(pair.Value);
|
|
break;
|
|
case @"TimelineZoom":
|
|
beatmap.BeatmapInfo.TimelineZoom = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void handleMetadata(string line)
|
|
{
|
|
var pair = SplitKeyVal(line);
|
|
|
|
var metadata = beatmap.BeatmapInfo.Metadata;
|
|
switch (pair.Key)
|
|
{
|
|
case @"Title":
|
|
metadata.Title = pair.Value;
|
|
break;
|
|
case @"TitleUnicode":
|
|
metadata.TitleUnicode = pair.Value;
|
|
break;
|
|
case @"Artist":
|
|
metadata.Artist = pair.Value;
|
|
break;
|
|
case @"ArtistUnicode":
|
|
metadata.ArtistUnicode = pair.Value;
|
|
break;
|
|
case @"Creator":
|
|
metadata.AuthorString = pair.Value;
|
|
break;
|
|
case @"Version":
|
|
beatmap.BeatmapInfo.Version = pair.Value;
|
|
break;
|
|
case @"Source":
|
|
beatmap.BeatmapInfo.Metadata.Source = pair.Value;
|
|
break;
|
|
case @"Tags":
|
|
beatmap.BeatmapInfo.Metadata.Tags = pair.Value;
|
|
break;
|
|
case @"BeatmapID":
|
|
beatmap.BeatmapInfo.OnlineBeatmapID = int.Parse(pair.Value);
|
|
break;
|
|
case @"BeatmapSetID":
|
|
beatmap.BeatmapInfo.BeatmapSet = new BeatmapSetInfo { OnlineBeatmapSetID = int.Parse(pair.Value) };
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void handleDifficulty(string line)
|
|
{
|
|
var pair = SplitKeyVal(line);
|
|
|
|
var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
|
|
switch (pair.Key)
|
|
{
|
|
case @"HPDrainRate":
|
|
difficulty.DrainRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"CircleSize":
|
|
difficulty.CircleSize = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"OverallDifficulty":
|
|
difficulty.OverallDifficulty = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"ApproachRate":
|
|
difficulty.ApproachRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"SliderMultiplier":
|
|
difficulty.SliderMultiplier = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
case @"SliderTickRate":
|
|
difficulty.SliderTickRate = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void handleEvent(string line)
|
|
{
|
|
string[] split = line.Split(',');
|
|
|
|
EventType type;
|
|
if (!Enum.TryParse(split[0], out type))
|
|
throw new InvalidDataException($@"Unknown event type {split[0]}");
|
|
|
|
switch (type)
|
|
{
|
|
case EventType.Background:
|
|
string filename = split[2].Trim('"');
|
|
beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
|
|
break;
|
|
case EventType.Break:
|
|
var breakEvent = new BreakPeriod
|
|
{
|
|
StartTime = getOffsetTime(double.Parse(split[1], NumberFormatInfo.InvariantInfo)),
|
|
EndTime = getOffsetTime(double.Parse(split[2], NumberFormatInfo.InvariantInfo))
|
|
};
|
|
|
|
if (!breakEvent.HasEffect)
|
|
return;
|
|
|
|
beatmap.Breaks.Add(breakEvent);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private void handleTimingPoint(string line)
|
|
{
|
|
try
|
|
{
|
|
string[] split = line.Split(',');
|
|
|
|
double time = getOffsetTime(double.Parse(split[0].Trim(), NumberFormatInfo.InvariantInfo));
|
|
double beatLength = double.Parse(split[1].Trim(), NumberFormatInfo.InvariantInfo);
|
|
double speedMultiplier = beatLength < 0 ? 100.0 / -beatLength : 1;
|
|
|
|
TimeSignatures timeSignature = TimeSignatures.SimpleQuadruple;
|
|
if (split.Length >= 3)
|
|
timeSignature = split[2][0] == '0' ? TimeSignatures.SimpleQuadruple : (TimeSignatures)int.Parse(split[2]);
|
|
|
|
LegacySampleBank sampleSet = defaultSampleBank;
|
|
if (split.Length >= 4)
|
|
sampleSet = (LegacySampleBank)int.Parse(split[3]);
|
|
|
|
int customSampleBank = 0;
|
|
if (split.Length >= 5)
|
|
customSampleBank = int.Parse(split[4]);
|
|
|
|
int sampleVolume = defaultSampleVolume;
|
|
if (split.Length >= 6)
|
|
sampleVolume = int.Parse(split[5]);
|
|
|
|
bool timingChange = true;
|
|
if (split.Length >= 7)
|
|
timingChange = split[6][0] == '1';
|
|
|
|
bool kiaiMode = false;
|
|
bool omitFirstBarSignature = false;
|
|
if (split.Length >= 8)
|
|
{
|
|
int effectFlags = int.Parse(split[7]);
|
|
kiaiMode = (effectFlags & 1) > 0;
|
|
omitFirstBarSignature = (effectFlags & 8) > 0;
|
|
}
|
|
|
|
string stringSampleSet = sampleSet.ToString().ToLower();
|
|
if (stringSampleSet == @"none")
|
|
stringSampleSet = @"normal";
|
|
|
|
if (timingChange)
|
|
{
|
|
handleTimingControlPoint(new TimingControlPoint
|
|
{
|
|
Time = time,
|
|
BeatLength = beatLength,
|
|
TimeSignature = timeSignature
|
|
});
|
|
}
|
|
|
|
handleDifficultyControlPoint(new DifficultyControlPoint
|
|
{
|
|
Time = time,
|
|
SpeedMultiplier = speedMultiplier
|
|
});
|
|
|
|
handleEffectControlPoint(new EffectControlPoint
|
|
{
|
|
Time = time,
|
|
KiaiMode = kiaiMode,
|
|
OmitFirstBarLine = omitFirstBarSignature
|
|
});
|
|
|
|
handleSampleControlPoint(new LegacySampleControlPoint
|
|
{
|
|
Time = time,
|
|
SampleBank = stringSampleSet,
|
|
SampleVolume = sampleVolume,
|
|
CustomSampleBank = customSampleBank
|
|
});
|
|
}
|
|
catch (FormatException e)
|
|
{
|
|
}
|
|
}
|
|
|
|
private void handleTimingControlPoint(TimingControlPoint newPoint)
|
|
{
|
|
beatmap.ControlPointInfo.TimingPoints.Add(newPoint);
|
|
}
|
|
|
|
private void handleDifficultyControlPoint(DifficultyControlPoint newPoint)
|
|
{
|
|
var existing = beatmap.ControlPointInfo.DifficultyPointAt(newPoint.Time);
|
|
|
|
if (newPoint.EquivalentTo(existing))
|
|
return;
|
|
|
|
beatmap.ControlPointInfo.DifficultyPoints.RemoveAll(x => x.Time == newPoint.Time);
|
|
beatmap.ControlPointInfo.DifficultyPoints.Add(newPoint);
|
|
}
|
|
|
|
private void handleEffectControlPoint(EffectControlPoint newPoint)
|
|
{
|
|
var existing = beatmap.ControlPointInfo.EffectPointAt(newPoint.Time);
|
|
|
|
if (newPoint.EquivalentTo(existing))
|
|
return;
|
|
|
|
beatmap.ControlPointInfo.EffectPoints.Add(newPoint);
|
|
}
|
|
|
|
private void handleSampleControlPoint(SampleControlPoint newPoint)
|
|
{
|
|
var existing = beatmap.ControlPointInfo.SamplePointAt(newPoint.Time);
|
|
|
|
if (newPoint.EquivalentTo(existing))
|
|
return;
|
|
|
|
beatmap.ControlPointInfo.SamplePoints.Add(newPoint);
|
|
}
|
|
|
|
private void handleHitObject(string line)
|
|
{
|
|
// If the ruleset wasn't specified, assume the osu!standard ruleset.
|
|
if (parser == null)
|
|
parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
|
|
|
|
var obj = parser.Parse(line, getOffsetTime());
|
|
|
|
if (obj != null)
|
|
{
|
|
beatmap.HitObjects.Add(obj);
|
|
}
|
|
}
|
|
|
|
private int getOffsetTime(int time) => time + (ApplyOffsets ? offset : 0);
|
|
|
|
private double getOffsetTime() => ApplyOffsets ? offset : 0;
|
|
|
|
private double getOffsetTime(double time) => time + (ApplyOffsets ? offset : 0);
|
|
}
|
|
}
|