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422 lines
16 KiB
C#
422 lines
16 KiB
C#
// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using System.Globalization;
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using System.IO;
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using OpenTK.Graphics;
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using osu.Game.Beatmaps.Timing;
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using osu.Game.Rulesets.Objects.Legacy;
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using osu.Game.Beatmaps.ControlPoints;
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using System.Collections.Generic;
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namespace osu.Game.Beatmaps.Formats
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{
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public class LegacyBeatmapDecoder : LegacyDecoder
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{
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private Beatmap beatmap;
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private bool hasCustomColours;
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private ConvertHitObjectParser parser;
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private LegacySampleBank defaultSampleBank;
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private int defaultSampleVolume = 100;
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public LegacyBeatmapDecoder()
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{
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}
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public LegacyBeatmapDecoder(string header)
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{
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BeatmapVersion = int.Parse(header.Substring(17));
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}
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protected override void ParseBeatmap(StreamReader stream, Beatmap beatmap)
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{
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if (stream == null)
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throw new ArgumentNullException(nameof(stream));
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if (beatmap == null)
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throw new ArgumentNullException(nameof(beatmap));
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this.beatmap = beatmap;
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this.beatmap.BeatmapInfo.BeatmapVersion = BeatmapVersion;
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ParseContent(stream);
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foreach (var hitObject in this.beatmap.HitObjects)
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hitObject.ApplyDefaults(this.beatmap.ControlPointInfo, this.beatmap.BeatmapInfo.BaseDifficulty);
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}
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protected override bool ShouldSkipLine(string line)
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{
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if (base.ShouldSkipLine(line) || line.StartsWith(" ") || line.StartsWith("_"))
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return true;
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return false;
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}
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protected override void ProcessSection(Section section, string line)
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{
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switch (section)
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{
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case Section.General:
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handleGeneral(line);
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break;
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case Section.Editor:
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handleEditor(line);
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break;
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case Section.Metadata:
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handleMetadata(line);
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break;
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case Section.Difficulty:
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handleDifficulty(line);
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break;
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case Section.Events:
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handleEvents(line);
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break;
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case Section.TimingPoints:
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handleTimingPoints(line);
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break;
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case Section.Colours:
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handleColours(line);
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break;
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case Section.HitObjects:
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handleHitObjects(line);
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break;
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case Section.Variables:
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handleVariables(line);
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break;
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}
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}
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private void handleGeneral(string line)
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{
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var pair = splitKeyVal(line, ':');
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var metadata = beatmap.BeatmapInfo.Metadata;
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switch (pair.Key)
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{
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case @"AudioFilename":
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metadata.AudioFile = pair.Value;
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break;
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case @"AudioLeadIn":
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beatmap.BeatmapInfo.AudioLeadIn = int.Parse(pair.Value);
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break;
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case @"PreviewTime":
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metadata.PreviewTime = int.Parse(pair.Value);
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break;
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case @"Countdown":
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beatmap.BeatmapInfo.Countdown = int.Parse(pair.Value) == 1;
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break;
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case @"SampleSet":
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defaultSampleBank = (LegacySampleBank)Enum.Parse(typeof(LegacySampleBank), pair.Value);
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break;
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case @"SampleVolume":
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defaultSampleVolume = int.Parse(pair.Value);
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break;
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case @"StackLeniency":
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beatmap.BeatmapInfo.StackLeniency = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"Mode":
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beatmap.BeatmapInfo.RulesetID = int.Parse(pair.Value);
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switch (beatmap.BeatmapInfo.RulesetID)
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{
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case 0:
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parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
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break;
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case 1:
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parser = new Rulesets.Objects.Legacy.Taiko.ConvertHitObjectParser();
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break;
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case 2:
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parser = new Rulesets.Objects.Legacy.Catch.ConvertHitObjectParser();
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break;
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case 3:
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parser = new Rulesets.Objects.Legacy.Mania.ConvertHitObjectParser();
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break;
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}
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break;
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case @"LetterboxInBreaks":
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beatmap.BeatmapInfo.LetterboxInBreaks = int.Parse(pair.Value) == 1;
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break;
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case @"SpecialStyle":
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beatmap.BeatmapInfo.SpecialStyle = int.Parse(pair.Value) == 1;
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break;
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case @"WidescreenStoryboard":
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beatmap.BeatmapInfo.WidescreenStoryboard = int.Parse(pair.Value) == 1;
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break;
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}
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}
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private void handleEditor(string line)
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{
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var pair = splitKeyVal(line, ':');
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switch (pair.Key)
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{
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case @"Bookmarks":
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beatmap.BeatmapInfo.StoredBookmarks = pair.Value;
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break;
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case @"DistanceSpacing":
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beatmap.BeatmapInfo.DistanceSpacing = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"BeatDivisor":
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beatmap.BeatmapInfo.BeatDivisor = int.Parse(pair.Value);
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break;
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case @"GridSize":
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beatmap.BeatmapInfo.GridSize = int.Parse(pair.Value);
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break;
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case @"TimelineZoom":
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beatmap.BeatmapInfo.TimelineZoom = double.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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}
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}
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private void handleMetadata(string line)
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{
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var pair = splitKeyVal(line, ':');
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var metadata = beatmap.BeatmapInfo.Metadata;
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switch (pair.Key)
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{
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case @"Title":
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metadata.Title = pair.Value;
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break;
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case @"TitleUnicode":
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metadata.TitleUnicode = pair.Value;
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break;
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case @"Artist":
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metadata.Artist = pair.Value;
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break;
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case @"ArtistUnicode":
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metadata.ArtistUnicode = pair.Value;
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break;
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case @"Creator":
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metadata.AuthorString = pair.Value;
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break;
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case @"Version":
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beatmap.BeatmapInfo.Version = pair.Value;
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break;
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case @"Source":
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beatmap.BeatmapInfo.Metadata.Source = pair.Value;
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break;
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case @"Tags":
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beatmap.BeatmapInfo.Metadata.Tags = pair.Value;
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break;
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case @"BeatmapID":
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beatmap.BeatmapInfo.OnlineBeatmapID = int.Parse(pair.Value);
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break;
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case @"BeatmapSetID":
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beatmap.BeatmapInfo.OnlineBeatmapSetID = int.Parse(pair.Value);
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metadata.OnlineBeatmapSetID = int.Parse(pair.Value);
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break;
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}
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}
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private void handleDifficulty(string line)
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{
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var pair = splitKeyVal(line, ':');
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var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
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switch (pair.Key)
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{
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case @"HPDrainRate":
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difficulty.DrainRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"CircleSize":
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difficulty.CircleSize = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"OverallDifficulty":
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difficulty.OverallDifficulty = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"ApproachRate":
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difficulty.ApproachRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"SliderMultiplier":
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difficulty.SliderMultiplier = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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case @"SliderTickRate":
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difficulty.SliderTickRate = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
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break;
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}
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}
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private void handleEvents(string line)
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{
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DecodeVariables(ref line);
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string[] split = line.Split(',');
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EventType type;
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if (!Enum.TryParse(split[0], out type))
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throw new InvalidDataException($@"Unknown event type {split[0]}");
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switch (type)
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{
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case EventType.Background:
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string filename = split[2].Trim('"');
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beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
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break;
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case EventType.Break:
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var breakEvent = new BreakPeriod
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{
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StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
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EndTime = double.Parse(split[2], NumberFormatInfo.InvariantInfo)
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};
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if (!breakEvent.HasEffect)
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return;
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beatmap.Breaks.Add(breakEvent);
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break;
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}
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}
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private void handleTimingPoints(string line)
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{
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string[] split = line.Split(',');
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double time = double.Parse(split[0].Trim(), NumberFormatInfo.InvariantInfo);
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double beatLength = double.Parse(split[1].Trim(), NumberFormatInfo.InvariantInfo);
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double speedMultiplier = beatLength < 0 ? 100.0 / -beatLength : 1;
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TimeSignatures timeSignature = TimeSignatures.SimpleQuadruple;
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if (split.Length >= 3)
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timeSignature = split[2][0] == '0' ? TimeSignatures.SimpleQuadruple : (TimeSignatures)int.Parse(split[2]);
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LegacySampleBank sampleSet = defaultSampleBank;
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if (split.Length >= 4)
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sampleSet = (LegacySampleBank)int.Parse(split[3]);
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//SampleBank sampleBank = SampleBank.Default;
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//if (split.Length >= 5)
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// sampleBank = (SampleBank)int.Parse(split[4]);
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int sampleVolume = defaultSampleVolume;
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if (split.Length >= 6)
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sampleVolume = int.Parse(split[5]);
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bool timingChange = true;
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if (split.Length >= 7)
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timingChange = split[6][0] == '1';
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bool kiaiMode = false;
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bool omitFirstBarSignature = false;
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if (split.Length >= 8)
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{
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int effectFlags = int.Parse(split[7]);
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kiaiMode = (effectFlags & 1) > 0;
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omitFirstBarSignature = (effectFlags & 8) > 0;
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}
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string stringSampleSet = sampleSet.ToString().ToLower();
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if (stringSampleSet == @"none")
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stringSampleSet = @"normal";
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DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(time);
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SoundControlPoint soundPoint = beatmap.ControlPointInfo.SoundPointAt(time);
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EffectControlPoint effectPoint = beatmap.ControlPointInfo.EffectPointAt(time);
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if (timingChange)
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{
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beatmap.ControlPointInfo.TimingPoints.Add(new TimingControlPoint
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{
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Time = time,
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BeatLength = beatLength,
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TimeSignature = timeSignature
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});
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}
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if (speedMultiplier != difficultyPoint.SpeedMultiplier)
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{
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beatmap.ControlPointInfo.DifficultyPoints.RemoveAll(x => x.Time == time);
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beatmap.ControlPointInfo.DifficultyPoints.Add(new DifficultyControlPoint
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{
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Time = time,
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SpeedMultiplier = speedMultiplier
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});
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}
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if (stringSampleSet != soundPoint.SampleBank || sampleVolume != soundPoint.SampleVolume)
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{
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beatmap.ControlPointInfo.SoundPoints.Add(new SoundControlPoint
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{
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Time = time,
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SampleBank = stringSampleSet,
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SampleVolume = sampleVolume
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});
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}
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if (kiaiMode != effectPoint.KiaiMode || omitFirstBarSignature != effectPoint.OmitFirstBarLine)
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{
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beatmap.ControlPointInfo.EffectPoints.Add(new EffectControlPoint
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{
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Time = time,
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KiaiMode = kiaiMode,
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OmitFirstBarLine = omitFirstBarSignature
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});
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}
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}
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private void handleColours(string line)
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{
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var pair = splitKeyVal(line, ':');
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string[] split = pair.Value.Split(',');
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if (split.Length != 3)
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throw new InvalidOperationException($@"Color specified in incorrect format (should be R,G,B): {pair.Value}");
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byte r, g, b;
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if (!byte.TryParse(split[0], out r) || !byte.TryParse(split[1], out g) || !byte.TryParse(split[2], out b))
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throw new InvalidOperationException(@"Color must be specified with 8-bit integer components");
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if (!hasCustomColours)
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{
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beatmap.ComboColors.Clear();
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hasCustomColours = true;
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}
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// Note: the combo index specified in the beatmap is discarded
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if (pair.Key.StartsWith(@"Combo"))
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{
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beatmap.ComboColors.Add(new Color4
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{
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R = r / 255f,
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G = g / 255f,
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B = b / 255f,
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A = 1f,
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});
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}
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}
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private void handleHitObjects(string line)
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{
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// If the ruleset wasn't specified, assume the osu!standard ruleset.
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if (parser == null)
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parser = new Rulesets.Objects.Legacy.Osu.ConvertHitObjectParser();
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var obj = parser.Parse(line);
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if (obj != null)
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beatmap.HitObjects.Add(obj);
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}
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private void handleVariables(string line)
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{
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var pair = splitKeyVal(line, '=');
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Variables[pair.Key] = pair.Value;
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}
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private KeyValuePair<string, string> splitKeyVal(string line, char separator)
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{
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var split = line.Trim().Split(new[] { separator }, 2);
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return new KeyValuePair<string, string>
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(
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split[0].Trim(),
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split.Length > 1 ? split[1].Trim() : string.Empty
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);
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}
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}
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}
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