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osu-lazer/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
2018-04-30 00:43:32 -07:00

321 lines
13 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 OpenTK;
using osu.Game.Rulesets.Objects.Types;
using System;
using System.Collections.Generic;
using System.Globalization;
using osu.Game.Beatmaps.Formats;
using osu.Game.Audio;
using System.Linq;
using osu.Framework.MathUtils;
namespace osu.Game.Rulesets.Objects.Legacy
{
/// <summary>
/// A HitObjectParser to parse legacy Beatmaps.
/// </summary>
public abstract class ConvertHitObjectParser : HitObjectParser
{
public override HitObject Parse(string text)
{
return Parse(text, 0);
}
public HitObject Parse(string text, double offset)
{
try
{
string[] split = text.Split(',');
ConvertHitObjectType type = (ConvertHitObjectType)int.Parse(split[3]) & ~ConvertHitObjectType.ColourHax;
bool combo = type.HasFlag(ConvertHitObjectType.NewCombo);
type &= ~ConvertHitObjectType.NewCombo;
var soundType = (LegacySoundType)int.Parse(split[4]);
var bankInfo = new SampleBankInfo();
HitObject result = null;
if ((type & ConvertHitObjectType.Circle) > 0)
{
result = CreateHit(new Vector2(int.Parse(split[0]), int.Parse(split[1])), combo);
if (split.Length > 5)
readCustomSampleBanks(split[5], bankInfo);
}
else if ((type & ConvertHitObjectType.Slider) > 0)
{
var pos = new Vector2(int.Parse(split[0]), int.Parse(split[1]));
CurveType curveType = CurveType.Catmull;
double length = 0;
var points = new List<Vector2> { Vector2.Zero };
string[] pointsplit = split[5].Split('|');
foreach (string t in pointsplit)
{
if (t.Length == 1)
{
switch (t)
{
case @"C":
curveType = CurveType.Catmull;
break;
case @"B":
curveType = CurveType.Bezier;
break;
case @"L":
curveType = CurveType.Linear;
break;
case @"P":
curveType = CurveType.PerfectCurve;
break;
}
continue;
}
string[] temp = t.Split(':');
points.Add(new Vector2((int)Convert.ToDouble(temp[0], CultureInfo.InvariantCulture), (int)Convert.ToDouble(temp[1], CultureInfo.InvariantCulture)) - pos);
}
// osu-stable special-cased colinear perfect curves to a CurveType.Linear
bool isLinear(List<Vector2> p) => Precision.AlmostEquals(0, (p[1].Y - p[0].Y) * (p[2].X - p[0].X) - (p[1].X - p[0].X) * (p[2].Y - p[0].Y));
if (points.Count == 3 && curveType == CurveType.PerfectCurve && isLinear(points))
curveType = CurveType.Linear;
int repeatCount = Convert.ToInt32(split[6], CultureInfo.InvariantCulture);
if (repeatCount > 9000)
throw new ArgumentOutOfRangeException(nameof(repeatCount), @"Repeat count is way too high");
// osu-stable treated the first span of the slider as a repeat, but no repeats are happening
repeatCount = Math.Max(0, repeatCount - 1);
if (split.Length > 7)
length = Convert.ToDouble(split[7], CultureInfo.InvariantCulture);
if (split.Length > 10)
readCustomSampleBanks(split[10], bankInfo);
// One node for each repeat + the start and end nodes
int nodes = repeatCount + 2;
// Populate node sample bank infos with the default hit object sample bank
var nodeBankInfos = new List<SampleBankInfo>();
for (int i = 0; i < nodes; i++)
nodeBankInfos.Add(bankInfo.Clone());
// Read any per-node sample banks
if (split.Length > 9 && split[9].Length > 0)
{
string[] sets = split[9].Split('|');
for (int i = 0; i < nodes; i++)
{
if (i >= sets.Length)
break;
SampleBankInfo info = nodeBankInfos[i];
readCustomSampleBanks(sets[i], info);
}
}
// Populate node sound types with the default hit object sound type
var nodeSoundTypes = new List<LegacySoundType>();
for (int i = 0; i < nodes; i++)
nodeSoundTypes.Add(soundType);
// Read any per-node sound types
if (split.Length > 8 && split[8].Length > 0)
{
string[] adds = split[8].Split('|');
for (int i = 0; i < nodes; i++)
{
if (i >= adds.Length)
break;
int sound;
int.TryParse(adds[i], out sound);
nodeSoundTypes[i] = (LegacySoundType)sound;
}
}
// Generate the final per-node samples
var nodeSamples = new List<List<SampleInfo>>(nodes);
for (int i = 0; i < nodes; i++)
nodeSamples.Add(convertSoundType(nodeSoundTypes[i], nodeBankInfos[i]));
result = CreateSlider(pos, combo, points, length, curveType, repeatCount, nodeSamples);
}
else if ((type & ConvertHitObjectType.Spinner) > 0)
{
result = CreateSpinner(new Vector2(512, 384) / 2, Convert.ToDouble(split[5], CultureInfo.InvariantCulture) + offset);
if (split.Length > 6)
readCustomSampleBanks(split[6], bankInfo);
}
else if ((type & ConvertHitObjectType.Hold) > 0)
{
// Note: Hold is generated by BMS converts
double endTime = Convert.ToDouble(split[2], CultureInfo.InvariantCulture);
if (split.Length > 5 && !string.IsNullOrEmpty(split[5]))
{
string[] ss = split[5].Split(':');
endTime = Convert.ToDouble(ss[0], CultureInfo.InvariantCulture);
readCustomSampleBanks(string.Join(":", ss.Skip(1)), bankInfo);
}
result = CreateHold(new Vector2(int.Parse(split[0]), int.Parse(split[1])), combo, endTime + offset);
}
if (result == null)
throw new InvalidOperationException($@"Unknown hit object type {type}.");
result.StartTime = Convert.ToDouble(split[2], CultureInfo.InvariantCulture) + offset;
result.Samples = convertSoundType(soundType, bankInfo);
return result;
}
catch (FormatException)
{
throw new FormatException("One or more hit objects were malformed.");
}
}
private void readCustomSampleBanks(string str, SampleBankInfo bankInfo)
{
if (string.IsNullOrEmpty(str))
return;
string[] split = str.Split(':');
var bank = (LegacyBeatmapDecoder.LegacySampleBank)Convert.ToInt32(split[0]);
var addbank = (LegacyBeatmapDecoder.LegacySampleBank)Convert.ToInt32(split[1]);
// Let's not implement this for now, because this doesn't fit nicely into the bank structure
//string sampleFile = split2.Length > 4 ? split2[4] : string.Empty;
string stringBank = bank.ToString().ToLower();
if (stringBank == @"none")
stringBank = null;
string stringAddBank = addbank.ToString().ToLower();
if (stringAddBank == @"none")
stringAddBank = null;
bankInfo.Normal = stringBank;
bankInfo.Add = stringAddBank;
if (split.Length > 3)
bankInfo.Volume = int.Parse(split[3]);
}
/// <summary>
/// Creates a legacy Hit-type hit object.
/// </summary>
/// <param name="position">The position of the hit object.</param>
/// <param name="newCombo">Whether the hit object creates a new combo.</param>
/// <returns>The hit object.</returns>
protected abstract HitObject CreateHit(Vector2 position, bool newCombo);
/// <summary>
/// Creats a legacy Slider-type hit object.
/// </summary>
/// <param name="position">The position of the hit object.</param>
/// <param name="newCombo">Whether the hit object creates a new combo.</param>
/// <param name="controlPoints">The slider control points.</param>
/// <param name="length">The slider length.</param>
/// <param name="curveType">The slider curve type.</param>
/// <param name="repeatCount">The slider repeat count.</param>
/// <param name="repeatSamples">The samples to be played when the repeat nodes are hit. This includes the head and tail of the slider.</param>
/// <returns>The hit object.</returns>
protected abstract HitObject CreateSlider(Vector2 position, bool newCombo, List<Vector2> controlPoints, double length, CurveType curveType, int repeatCount, List<List<SampleInfo>> repeatSamples);
/// <summary>
/// Creates a legacy Spinner-type hit object.
/// </summary>
/// <param name="position">The position of the hit object.</param>
/// <param name="endTime">The spinner end time.</param>
/// <returns>The hit object.</returns>
protected abstract HitObject CreateSpinner(Vector2 position, double endTime);
/// <summary>
/// Creates a legacy Hold-type hit object.
/// </summary>
/// <param name="position">The position of the hit object.</param>
/// <param name="newCombo">Whether the hit object creates a new combo.</param>
/// <param name="endTime">The hold end time.</param>
protected abstract HitObject CreateHold(Vector2 position, bool newCombo, double endTime);
private List<SampleInfo> convertSoundType(LegacySoundType type, SampleBankInfo bankInfo)
{
var soundTypes = new List<SampleInfo>
{
new SampleInfo
{
Bank = bankInfo.Normal,
Name = SampleInfo.HIT_NORMAL,
Volume = bankInfo.Volume
}
};
if ((type & LegacySoundType.Finish) > 0)
{
soundTypes.Add(new SampleInfo
{
Bank = bankInfo.Add,
Name = SampleInfo.HIT_FINISH,
Volume = bankInfo.Volume
});
}
if ((type & LegacySoundType.Whistle) > 0)
{
soundTypes.Add(new SampleInfo
{
Bank = bankInfo.Add,
Name = SampleInfo.HIT_WHISTLE,
Volume = bankInfo.Volume
});
}
if ((type & LegacySoundType.Clap) > 0)
{
soundTypes.Add(new SampleInfo
{
Bank = bankInfo.Add,
Name = SampleInfo.HIT_CLAP,
Volume = bankInfo.Volume
});
}
return soundTypes;
}
private class SampleBankInfo
{
public string Normal;
public string Add;
public int Volume;
public SampleBankInfo Clone()
{
return (SampleBankInfo)MemberwiseClone();
}
}
[Flags]
private enum LegacySoundType
{
None = 0,
Normal = 1,
Whistle = 2,
Finish = 4,
Clap = 8
}
}
}