using System; using System.Collections.Generic; using System.Globalization; using System.IO; using OpenTK.Graphics; using osu.Game.Database; using osu.Game.Beatmaps.Events; using osu.Game.Beatmaps.Objects; using osu.Game.Beatmaps.Samples; using osu.Game.Beatmaps.Timing; using osu.Game.GameModes.Play; namespace osu.Game.Beatmaps.Formats { public class OsuLegacyDecoder : BeatmapDecoder { public static void Register() { AddDecoder(@"osu file format v14"); AddDecoder(@"osu file format v13"); AddDecoder(@"osu file format v12"); AddDecoder(@"osu file format v11"); AddDecoder(@"osu file format v10"); AddDecoder(@"osu file format v9"); // TODO: Not sure how far back to go, or differences between versions } private enum Section { None, General, Editor, Metadata, Difficulty, Events, TimingPoints, Colours, HitObjects, } private void handleGeneral(Beatmap beatmap, string key, string val) { var metadata = beatmap.BeatmapInfo.Metadata; switch (key) { case @"AudioFilename": metadata.AudioFile = val; break; case @"AudioLeadIn": beatmap.BeatmapInfo.AudioLeadIn = int.Parse(val); break; case @"PreviewTime": metadata.PreviewTime = int.Parse(val); break; case @"Countdown": beatmap.BeatmapInfo.Countdown = int.Parse(val) == 1; break; case @"SampleSet": beatmap.BeatmapInfo.SampleSet = (SampleSet)Enum.Parse(typeof(SampleSet), val); break; case @"StackLeniency": beatmap.BeatmapInfo.StackLeniency = float.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"Mode": beatmap.BeatmapInfo.Mode = (PlayMode)int.Parse(val); break; case @"LetterboxInBreaks": beatmap.BeatmapInfo.LetterboxInBreaks = int.Parse(val) == 1; break; case @"SpecialStyle": beatmap.BeatmapInfo.SpecialStyle = int.Parse(val) == 1; break; case @"WidescreenStoryboard": beatmap.BeatmapInfo.WidescreenStoryboard = int.Parse(val) == 1; break; } } private void handleEditor(Beatmap beatmap, string key, string val) { switch (key) { case @"Bookmarks": beatmap.BeatmapInfo.StoredBookmarks = val; break; case @"DistanceSpacing": beatmap.BeatmapInfo.DistanceSpacing = double.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"BeatDivisor": beatmap.BeatmapInfo.BeatDivisor = int.Parse(val); break; case @"GridSize": beatmap.BeatmapInfo.GridSize = int.Parse(val); break; case @"TimelineZoom": beatmap.BeatmapInfo.TimelineZoom = double.Parse(val, NumberFormatInfo.InvariantInfo); break; } } private void handleMetadata(Beatmap beatmap, string key, string val) { var metadata = beatmap.BeatmapInfo.Metadata; switch (key) { case @"Title": metadata.Title = val; break; case @"TitleUnicode": metadata.TitleUnicode = val; break; case @"Artist": metadata.Artist = val; break; case @"ArtistUnicode": metadata.ArtistUnicode = val; break; case @"Creator": metadata.Author = val; break; case @"Version": beatmap.BeatmapInfo.Version = val; break; case @"Source": beatmap.BeatmapInfo.Metadata.Source = val; break; case @"Tags": beatmap.BeatmapInfo.Metadata.Tags = val; break; case @"BeatmapID": beatmap.BeatmapInfo.BeatmapID = int.Parse(val); break; case @"BeatmapSetID": beatmap.BeatmapInfo.BeatmapSetID = int.Parse(val); metadata.BeatmapSetID = int.Parse(val); break; } } private void handleDifficulty(Beatmap beatmap, string key, string val) { var difficulty = beatmap.BeatmapInfo.BaseDifficulty; switch (key) { case @"HPDrainRate": difficulty.DrainRate = float.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"CircleSize": difficulty.CircleSize = float.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"OverallDifficulty": difficulty.OverallDifficulty = float.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"ApproachRate": difficulty.ApproachRate = float.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"SliderMultiplier": difficulty.SliderMultiplier = float.Parse(val, NumberFormatInfo.InvariantInfo); break; case @"SliderTickRate": difficulty.SliderTickRate = float.Parse(val, NumberFormatInfo.InvariantInfo); break; } } private void handleEvents(Beatmap beatmap, string val) { if (val.StartsWith(@"//")) return; if (val.StartsWith(@" ")) return; // TODO string[] split = val.Split(','); EventType type; int _type; if (!int.TryParse(split[0], out _type)) { if (!Enum.TryParse(split[0], out type)) throw new InvalidDataException($@"Unknown event type {split[0]}"); } else type = (EventType)_type; // TODO: Parse and store the rest of the event if (type == EventType.Background) beatmap.BeatmapInfo.Metadata.BackgroundFile = split[2].Trim('"'); } private void handleTimingPoints(Beatmap beatmap, string val) { // TODO } private void handleColours(Beatmap beatmap, string key, string val) { string[] split = val.Split(','); if (split.Length != 3) throw new InvalidOperationException($@"Color specified in incorrect format (should be R,G,B): {val}"); byte r, g, b; if (!byte.TryParse(split[0], out r) || !byte.TryParse(split[1], out g) || !byte.TryParse(split[2], out b)) throw new InvalidOperationException($@"Color must be specified with 8-bit integer components"); // Note: the combo index specified in the beatmap is discarded beatmap.ComboColors.Add(new Color4 { R = r / 255f, G = g / 255f, B = b / 255f, A = 1f, }); } protected override Beatmap ParseFile(TextReader stream) { var beatmap = new Beatmap { HitObjects = new List(), ControlPoints = new List(), ComboColors = new List(), BeatmapInfo = new BeatmapInfo { Metadata = new BeatmapMetadata(), BaseDifficulty = new BaseDifficulty(), }, }; var section = Section.None; string line; while (true) { line = stream.ReadLine(); if (line == null) break; if (string.IsNullOrEmpty(line)) continue; if (line.StartsWith(@"osu file format v")) continue; if (line.StartsWith(@"[") && line.EndsWith(@"]")) { if (!Enum.TryParse(line.Substring(1, line.Length - 2), out section)) throw new InvalidDataException($@"Unknown osu section {line}"); continue; } string val = line, key = null; if (section != Section.Events && section != Section.TimingPoints && section != Section.HitObjects) { key = val.Remove(val.IndexOf(':')).Trim(); val = val.Substring(val.IndexOf(':') + 1).Trim(); } switch (section) { case Section.General: handleGeneral(beatmap, key, val); break; case Section.Editor: handleEditor(beatmap, key, val); break; case Section.Metadata: handleMetadata(beatmap, key, val); break; case Section.Difficulty: handleDifficulty(beatmap, key, val); break; case Section.Events: handleEvents(beatmap, val); break; case Section.TimingPoints: handleTimingPoints(beatmap, val); break; case Section.Colours: handleColours(beatmap, key, val); break; case Section.HitObjects: var h = HitObject.Parse(beatmap.BeatmapInfo.Mode, val); if (h != null) beatmap.HitObjects.Add(h); break; } } return beatmap; } } }