mirror of
https://github.com/ppy/osu.git
synced 2024-11-06 10:47:28 +08:00
320 lines
13 KiB
C#
320 lines
13 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
|
|
// See the LICENCE file in the repository root for full licence text.
|
|
|
|
#nullable disable
|
|
|
|
using System;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using osu.Game.Beatmaps;
|
|
using osu.Game.Beatmaps.Formats;
|
|
using osu.Game.Beatmaps.Legacy;
|
|
using osu.Game.IO.Legacy;
|
|
using osu.Game.Online.API.Requests.Responses;
|
|
using osu.Game.Replays;
|
|
using osu.Game.Replays.Legacy;
|
|
using osu.Game.Rulesets;
|
|
using osu.Game.Rulesets.Mods;
|
|
using osu.Game.Rulesets.Replays;
|
|
using SharpCompress.Compressors.LZMA;
|
|
|
|
namespace osu.Game.Scoring.Legacy
|
|
{
|
|
public abstract class LegacyScoreDecoder
|
|
{
|
|
private IBeatmap currentBeatmap;
|
|
private Ruleset currentRuleset;
|
|
|
|
private float beatmapOffset;
|
|
|
|
public Score Parse(Stream stream)
|
|
{
|
|
var score = new Score
|
|
{
|
|
Replay = new Replay()
|
|
};
|
|
|
|
WorkingBeatmap workingBeatmap;
|
|
|
|
using (SerializationReader sr = new SerializationReader(stream))
|
|
{
|
|
currentRuleset = GetRuleset(sr.ReadByte());
|
|
var scoreInfo = new ScoreInfo { Ruleset = currentRuleset.RulesetInfo };
|
|
|
|
score.ScoreInfo = scoreInfo;
|
|
|
|
int version = sr.ReadInt32();
|
|
|
|
workingBeatmap = GetBeatmap(sr.ReadString());
|
|
if (workingBeatmap is DummyWorkingBeatmap)
|
|
throw new BeatmapNotFoundException();
|
|
|
|
scoreInfo.User = new APIUser { Username = sr.ReadString() };
|
|
|
|
// MD5Hash
|
|
sr.ReadString();
|
|
|
|
scoreInfo.SetCount300(sr.ReadUInt16());
|
|
scoreInfo.SetCount100(sr.ReadUInt16());
|
|
scoreInfo.SetCount50(sr.ReadUInt16());
|
|
scoreInfo.SetCountGeki(sr.ReadUInt16());
|
|
scoreInfo.SetCountKatu(sr.ReadUInt16());
|
|
scoreInfo.SetCountMiss(sr.ReadUInt16());
|
|
|
|
scoreInfo.TotalScore = sr.ReadInt32();
|
|
scoreInfo.MaxCombo = sr.ReadUInt16();
|
|
|
|
/* score.Perfect = */
|
|
sr.ReadBoolean();
|
|
|
|
scoreInfo.Mods = currentRuleset.ConvertFromLegacyMods((LegacyMods)sr.ReadInt32()).ToArray();
|
|
|
|
// lazer replays get a really high version number.
|
|
if (version < LegacyScoreEncoder.FIRST_LAZER_VERSION)
|
|
scoreInfo.Mods = scoreInfo.Mods.Append(currentRuleset.CreateMod<ModClassic>()).ToArray();
|
|
|
|
currentBeatmap = workingBeatmap.GetPlayableBeatmap(currentRuleset.RulesetInfo, scoreInfo.Mods);
|
|
scoreInfo.BeatmapInfo = currentBeatmap.BeatmapInfo;
|
|
|
|
// As this is baked into hitobject timing (see `LegacyBeatmapDecoder`) we also need to apply this to replay frame timing.
|
|
beatmapOffset = currentBeatmap.BeatmapInfo.BeatmapVersion < 5 ? LegacyBeatmapDecoder.EARLY_VERSION_TIMING_OFFSET : 0;
|
|
|
|
/* score.HpGraphString = */
|
|
sr.ReadString();
|
|
|
|
scoreInfo.Date = sr.ReadDateTime();
|
|
|
|
byte[] compressedReplay = sr.ReadByteArray();
|
|
|
|
if (version >= 20140721)
|
|
scoreInfo.OnlineID = sr.ReadInt64();
|
|
else if (version >= 20121008)
|
|
scoreInfo.OnlineID = sr.ReadInt32();
|
|
|
|
if (compressedReplay?.Length > 0)
|
|
{
|
|
using (var replayInStream = new MemoryStream(compressedReplay))
|
|
{
|
|
byte[] properties = new byte[5];
|
|
if (replayInStream.Read(properties, 0, 5) != 5)
|
|
throw new IOException("input .lzma is too short");
|
|
|
|
long outSize = 0;
|
|
|
|
for (int i = 0; i < 8; i++)
|
|
{
|
|
int v = replayInStream.ReadByte();
|
|
if (v < 0)
|
|
throw new IOException("Can't Read 1");
|
|
|
|
outSize |= (long)(byte)v << (8 * i);
|
|
}
|
|
|
|
long compressedSize = replayInStream.Length - replayInStream.Position;
|
|
|
|
using (var lzma = new LzmaStream(properties, replayInStream, compressedSize, outSize))
|
|
using (var reader = new StreamReader(lzma))
|
|
readLegacyReplay(score.Replay, reader);
|
|
}
|
|
}
|
|
}
|
|
|
|
PopulateAccuracy(score.ScoreInfo);
|
|
|
|
// before returning for database import, we must restore the database-sourced BeatmapInfo.
|
|
// if not, the clone operation in GetPlayableBeatmap will cause a dereference and subsequent database exception.
|
|
score.ScoreInfo.BeatmapInfo = workingBeatmap.BeatmapInfo;
|
|
|
|
return score;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Populates the accuracy of a given <see cref="ScoreInfo"/> from its contained statistics.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Legacy use only.
|
|
/// </remarks>
|
|
/// <param name="score">The <see cref="ScoreInfo"/> to populate.</param>
|
|
public static void PopulateAccuracy(ScoreInfo score)
|
|
{
|
|
int countMiss = score.GetCountMiss() ?? 0;
|
|
int count50 = score.GetCount50() ?? 0;
|
|
int count100 = score.GetCount100() ?? 0;
|
|
int count300 = score.GetCount300() ?? 0;
|
|
int countGeki = score.GetCountGeki() ?? 0;
|
|
int countKatu = score.GetCountKatu() ?? 0;
|
|
|
|
switch (score.Ruleset.OnlineID)
|
|
{
|
|
case 0:
|
|
{
|
|
int totalHits = count50 + count100 + count300 + countMiss;
|
|
score.Accuracy = totalHits > 0 ? (double)(count50 * 50 + count100 * 100 + count300 * 300) / (totalHits * 300) : 1;
|
|
|
|
float ratio300 = (float)count300 / totalHits;
|
|
float ratio50 = (float)count50 / totalHits;
|
|
|
|
if (ratio300 == 1)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.XH : ScoreRank.X;
|
|
else if (ratio300 > 0.9 && ratio50 <= 0.01 && countMiss == 0)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.SH : ScoreRank.S;
|
|
else if ((ratio300 > 0.8 && countMiss == 0) || ratio300 > 0.9)
|
|
score.Rank = ScoreRank.A;
|
|
else if ((ratio300 > 0.7 && countMiss == 0) || ratio300 > 0.8)
|
|
score.Rank = ScoreRank.B;
|
|
else if (ratio300 > 0.6)
|
|
score.Rank = ScoreRank.C;
|
|
else
|
|
score.Rank = ScoreRank.D;
|
|
break;
|
|
}
|
|
|
|
case 1:
|
|
{
|
|
int totalHits = count50 + count100 + count300 + countMiss;
|
|
score.Accuracy = totalHits > 0 ? (double)(count100 * 150 + count300 * 300) / (totalHits * 300) : 1;
|
|
|
|
float ratio300 = (float)count300 / totalHits;
|
|
float ratio50 = (float)count50 / totalHits;
|
|
|
|
if (ratio300 == 1)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.XH : ScoreRank.X;
|
|
else if (ratio300 > 0.9 && ratio50 <= 0.01 && countMiss == 0)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.SH : ScoreRank.S;
|
|
else if ((ratio300 > 0.8 && countMiss == 0) || ratio300 > 0.9)
|
|
score.Rank = ScoreRank.A;
|
|
else if ((ratio300 > 0.7 && countMiss == 0) || ratio300 > 0.8)
|
|
score.Rank = ScoreRank.B;
|
|
else if (ratio300 > 0.6)
|
|
score.Rank = ScoreRank.C;
|
|
else
|
|
score.Rank = ScoreRank.D;
|
|
break;
|
|
}
|
|
|
|
case 2:
|
|
{
|
|
int totalHits = count50 + count100 + count300 + countMiss + countKatu;
|
|
score.Accuracy = totalHits > 0 ? (double)(count50 + count100 + count300) / totalHits : 1;
|
|
|
|
if (score.Accuracy == 1)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.XH : ScoreRank.X;
|
|
else if (score.Accuracy > 0.98)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.SH : ScoreRank.S;
|
|
else if (score.Accuracy > 0.94)
|
|
score.Rank = ScoreRank.A;
|
|
else if (score.Accuracy > 0.9)
|
|
score.Rank = ScoreRank.B;
|
|
else if (score.Accuracy > 0.85)
|
|
score.Rank = ScoreRank.C;
|
|
else
|
|
score.Rank = ScoreRank.D;
|
|
break;
|
|
}
|
|
|
|
case 3:
|
|
{
|
|
int totalHits = count50 + count100 + count300 + countMiss + countGeki + countKatu;
|
|
score.Accuracy = totalHits > 0 ? (double)(count50 * 50 + count100 * 100 + countKatu * 200 + (count300 + countGeki) * 300) / (totalHits * 300) : 1;
|
|
|
|
if (score.Accuracy == 1)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.XH : ScoreRank.X;
|
|
else if (score.Accuracy > 0.95)
|
|
score.Rank = score.Mods.Any(m => m is ModHidden || m is ModFlashlight) ? ScoreRank.SH : ScoreRank.S;
|
|
else if (score.Accuracy > 0.9)
|
|
score.Rank = ScoreRank.A;
|
|
else if (score.Accuracy > 0.8)
|
|
score.Rank = ScoreRank.B;
|
|
else if (score.Accuracy > 0.7)
|
|
score.Rank = ScoreRank.C;
|
|
else
|
|
score.Rank = ScoreRank.D;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void readLegacyReplay(Replay replay, StreamReader reader)
|
|
{
|
|
float lastTime = beatmapOffset;
|
|
ReplayFrame currentFrame = null;
|
|
|
|
string[] frames = reader.ReadToEnd().Split(',');
|
|
|
|
for (int i = 0; i < frames.Length; i++)
|
|
{
|
|
string[] split = frames[i].Split('|');
|
|
|
|
if (split.Length < 4)
|
|
continue;
|
|
|
|
if (split[0] == "-12345")
|
|
{
|
|
// Todo: The seed is provided in split[3], which we'll need to use at some point
|
|
continue;
|
|
}
|
|
|
|
float diff = Parsing.ParseFloat(split[0]);
|
|
float mouseX = Parsing.ParseFloat(split[1], Parsing.MAX_COORDINATE_VALUE);
|
|
float mouseY = Parsing.ParseFloat(split[2], Parsing.MAX_COORDINATE_VALUE);
|
|
|
|
lastTime += diff;
|
|
|
|
if (i < 2 && mouseX == 256 && mouseY == -500)
|
|
// at the start of the replay, stable places two replay frames, at time 0 and SkipBoundary - 1, respectively.
|
|
// both frames use a position of (256, -500).
|
|
// ignore these frames as they serve no real purpose (and can even mislead ruleset-specific handlers - see mania)
|
|
continue;
|
|
|
|
// Todo: At some point we probably want to rewind and play back the negative-time frames
|
|
// but for now we'll achieve equal playback to stable by skipping negative frames
|
|
if (diff < 0)
|
|
continue;
|
|
|
|
currentFrame = convertFrame(new LegacyReplayFrame(lastTime,
|
|
mouseX,
|
|
mouseY,
|
|
(ReplayButtonState)Parsing.ParseInt(split[3])), currentFrame);
|
|
|
|
replay.Frames.Add(currentFrame);
|
|
}
|
|
}
|
|
|
|
private ReplayFrame convertFrame(LegacyReplayFrame currentFrame, ReplayFrame lastFrame)
|
|
{
|
|
var convertible = currentRuleset.CreateConvertibleReplayFrame();
|
|
if (convertible == null)
|
|
throw new InvalidOperationException($"Legacy replay cannot be converted for the ruleset: {currentRuleset.Description}");
|
|
|
|
convertible.FromLegacy(currentFrame, currentBeatmap, lastFrame);
|
|
|
|
var frame = (ReplayFrame)convertible;
|
|
frame.Time = currentFrame.Time;
|
|
|
|
return frame;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Retrieves the <see cref="Ruleset"/> for a specific id.
|
|
/// </summary>
|
|
/// <param name="rulesetId">The id.</param>
|
|
/// <returns>The <see cref="Ruleset"/>.</returns>
|
|
protected abstract Ruleset GetRuleset(int rulesetId);
|
|
|
|
/// <summary>
|
|
/// Retrieves the <see cref="WorkingBeatmap"/> corresponding to an MD5 hash.
|
|
/// </summary>
|
|
/// <param name="md5Hash">The MD5 hash.</param>
|
|
/// <returns>The <see cref="WorkingBeatmap"/>.</returns>
|
|
protected abstract WorkingBeatmap GetBeatmap(string md5Hash);
|
|
|
|
public class BeatmapNotFoundException : Exception
|
|
{
|
|
public BeatmapNotFoundException()
|
|
: base("No corresponding beatmap for the score could be found.")
|
|
{
|
|
}
|
|
}
|
|
}
|
|
}
|