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Code Issues Releases Wiki Activity

Use integer calculations to replicate stable's slider conversion

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This commit is contained in:
smoogipoo 2020-10-09 21:22:13 +09:00
parent 5f19081db6
commit 08f3481b59
1 changed files with 55 additions and 46 deletions
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101
osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs
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@ -3,8 +3,8 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using osu.Framework.Utils;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Mania.MathUtils;
@ -12,6 +12,7 @@ using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Rulesets.Mania.Objects;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Beatmaps.Formats;
namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
{
@ -25,8 +26,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// </summary>
private const float osu_base_scoring_distance = 100;
public readonly double EndTime;
public readonly double SegmentDuration;
public readonly int StartTime;
public readonly int EndTime;
public readonly int SegmentDuration;
public readonly int SpanCount;
private PatternType convertType;
@ -41,20 +43,25 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
var distanceData = hitObject as IHasDistance;
var repeatsData = hitObject as IHasRepeats;
SpanCount = repeatsData?.SpanCount() ?? 1;
Debug.Assert(distanceData != null);
TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(hitObject.StartTime);
// The true distance, accounting for any repeats
double distance = (distanceData?.Distance ?? 0) * SpanCount;
// The velocity of the osu! hit object - calculated as the velocity of a slider
double osuVelocity = osu_base_scoring_distance * beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier / timingPoint.BeatLength;
// The duration of the osu! hit object
double osuDuration = distance / osuVelocity;
double beatLength;
#pragma warning disable 618
if (difficultyPoint is LegacyBeatmapDecoder.LegacyDifficultyControlPoint legacyDifficultyPoint)
#pragma warning restore 618
beatLength = timingPoint.BeatLength * legacyDifficultyPoint.BpmMultiplier;
else
beatLength = timingPoint.BeatLength / difficultyPoint.SpeedMultiplier;
EndTime = hitObject.StartTime + osuDuration;
SegmentDuration = (EndTime - HitObject.StartTime) / SpanCount;
SpanCount = repeatsData?.SpanCount() ?? 1;
StartTime = (int)Math.Round(hitObject.StartTime);
EndTime = (int)Math.Floor(StartTime + distanceData.Distance * beatLength * SpanCount * 0.01 / beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier);
SegmentDuration = (EndTime - StartTime) / SpanCount;
}
public override IEnumerable<Pattern> Generate()
@ -76,7 +83,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
foreach (var obj in originalPattern.HitObjects)
{
if (!Precision.AlmostEquals(EndTime, obj.GetEndTime()))
if (EndTime != (int)Math.Round(obj.GetEndTime()))
intermediatePattern.Add(obj);
else
endTimePattern.Add(obj);
@ -91,35 +98,35 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
if (TotalColumns == 1)
{
var pattern = new Pattern();
addToPattern(pattern, 0, HitObject.StartTime, EndTime);
addToPattern(pattern, 0, StartTime, EndTime);
return pattern;
}
if (SpanCount > 1)
{
if (SegmentDuration <= 90)
return generateRandomHoldNotes(HitObject.StartTime, 1);
return generateRandomHoldNotes(StartTime, 1);
if (SegmentDuration <= 120)
{
convertType |= PatternType.ForceNotStack;
return generateRandomNotes(HitObject.StartTime, SpanCount + 1);
return generateRandomNotes(StartTime, SpanCount + 1);
}
if (SegmentDuration <= 160)
return generateStair(HitObject.StartTime);
return generateStair(StartTime);
if (SegmentDuration <= 200 && ConversionDifficulty > 3)
return generateRandomMultipleNotes(HitObject.StartTime);
return generateRandomMultipleNotes(StartTime);
double duration = EndTime - HitObject.StartTime;
double duration = EndTime - StartTime;
if (duration >= 4000)
return generateNRandomNotes(HitObject.StartTime, 0.23, 0, 0);
return generateNRandomNotes(StartTime, 0.23, 0, 0);
if (SegmentDuration > 400 && SpanCount < TotalColumns - 1 - RandomStart)
return generateTiledHoldNotes(HitObject.StartTime);
return generateTiledHoldNotes(StartTime);
return generateHoldAndNormalNotes(HitObject.StartTime);
return generateHoldAndNormalNotes(StartTime);
}
if (SegmentDuration <= 110)
@ -128,37 +135,37 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
convertType |= PatternType.ForceNotStack;
else
convertType &= ~PatternType.ForceNotStack;
return generateRandomNotes(HitObject.StartTime, SegmentDuration < 80 ? 1 : 2);
return generateRandomNotes(StartTime, SegmentDuration < 80 ? 1 : 2);
}
if (ConversionDifficulty > 6.5)
{
if (convertType.HasFlag(PatternType.LowProbability))
return generateNRandomNotes(HitObject.StartTime, 0.78, 0.3, 0);
return generateNRandomNotes(StartTime, 0.78, 0.3, 0);
return generateNRandomNotes(HitObject.StartTime, 0.85, 0.36, 0.03);
return generateNRandomNotes(StartTime, 0.85, 0.36, 0.03);
}
if (ConversionDifficulty > 4)
{
if (convertType.HasFlag(PatternType.LowProbability))
return generateNRandomNotes(HitObject.StartTime, 0.43, 0.08, 0);
return generateNRandomNotes(StartTime, 0.43, 0.08, 0);
return generateNRandomNotes(HitObject.StartTime, 0.56, 0.18, 0);
return generateNRandomNotes(StartTime, 0.56, 0.18, 0);
}
if (ConversionDifficulty > 2.5)
{
if (convertType.HasFlag(PatternType.LowProbability))
return generateNRandomNotes(HitObject.StartTime, 0.3, 0, 0);
return generateNRandomNotes(StartTime, 0.3, 0, 0);
return generateNRandomNotes(HitObject.StartTime, 0.37, 0.08, 0);
return generateNRandomNotes(StartTime, 0.37, 0.08, 0);
}
if (convertType.HasFlag(PatternType.LowProbability))
return generateNRandomNotes(HitObject.StartTime, 0.17, 0, 0);
return generateNRandomNotes(StartTime, 0.17, 0, 0);
return generateNRandomNotes(HitObject.StartTime, 0.27, 0, 0);
return generateNRandomNotes(StartTime, 0.27, 0, 0);
}
/// <summary>
@ -167,7 +174,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// <param name="startTime">Start time of each hold note.</param>
/// <param name="noteCount">Number of hold notes.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateRandomHoldNotes(double startTime, int noteCount)
private Pattern generateRandomHoldNotes(int startTime, int noteCount)
{
// - - - -
// ■ - ■ ■
@ -202,7 +209,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// <param name="startTime">The start time.</param>
/// <param name="noteCount">The number of notes.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateRandomNotes(double startTime, int noteCount)
private Pattern generateRandomNotes(int startTime, int noteCount)
{
// - - - -
// x - - -
@ -234,7 +241,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// </summary>
/// <param name="startTime">The start time.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateStair(double startTime)
private Pattern generateStair(int startTime)
{
// - - - -
// x - - -
@ -286,7 +293,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// </summary>
/// <param name="startTime">The start time.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateRandomMultipleNotes(double startTime)
private Pattern generateRandomMultipleNotes(int startTime)
{
// - - - -
// x - - -
@ -329,7 +336,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// <param name="p3">The probability required for 3 hold notes to be generated.</param>
/// <param name="p4">The probability required for 4 hold notes to be generated.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateNRandomNotes(double startTime, double p2, double p3, double p4)
private Pattern generateNRandomNotes(int startTime, double p2, double p3, double p4)
{
// - - - -
// ■ - ■ ■
@ -366,7 +373,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
static bool isDoubleSample(HitSampleInfo sample) => sample.Name == HitSampleInfo.HIT_CLAP || sample.Name == HitSampleInfo.HIT_FINISH;
bool canGenerateTwoNotes = !convertType.HasFlag(PatternType.LowProbability);
canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(HitObject.StartTime).Any(isDoubleSample);
canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(StartTime).Any(isDoubleSample);
if (canGenerateTwoNotes)
p2 = 1;
@ -379,7 +386,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// </summary>
/// <param name="startTime">The first hold note start time.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateTiledHoldNotes(double startTime)
private Pattern generateTiledHoldNotes(int startTime)
{
// - - - -
// ■ ■ ■ ■
@ -394,6 +401,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
int columnRepeat = Math.Min(SpanCount, TotalColumns);
// Due to integer rounding, this is not guaranteed to be the same as EndTime (the class-level variable).
int endTime = startTime + SegmentDuration * SpanCount;
int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
nextColumn = FindAvailableColumn(nextColumn, PreviousPattern);
@ -401,7 +411,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
for (int i = 0; i < columnRepeat; i++)
{
nextColumn = FindAvailableColumn(nextColumn, pattern);
addToPattern(pattern, nextColumn, startTime, EndTime);
addToPattern(pattern, nextColumn, startTime, endTime);
startTime += SegmentDuration;
}
@ -413,7 +423,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// </summary>
/// <param name="startTime">The start time of notes.</param>
/// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
private Pattern generateHoldAndNormalNotes(double startTime)
private Pattern generateHoldAndNormalNotes(int startTime)
{
// - - - -
// ■ x x -
@ -448,7 +458,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
for (int i = 0; i <= SpanCount; i++)
{
if (!(ignoreHead && startTime == HitObject.StartTime))
if (!(ignoreHead && startTime == StartTime))
{
for (int j = 0; j < noteCount; j++)
{
@ -471,19 +481,18 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// </summary>
/// <param name="time">The time to retrieve the sample info list from.</param>
/// <returns></returns>
private IList<HitSampleInfo> sampleInfoListAt(double time) => nodeSamplesAt(time)?.First() ?? HitObject.Samples;
private IList<HitSampleInfo> sampleInfoListAt(int time) => nodeSamplesAt(time)?.First() ?? HitObject.Samples;
/// <summary>
/// Retrieves the list of node samples that occur at time greater than or equal to <paramref name="time"/>.
/// </summary>
/// <param name="time">The time to retrieve node samples at.</param>
private List<IList<HitSampleInfo>> nodeSamplesAt(double time)
private List<IList<HitSampleInfo>> nodeSamplesAt(int time)
{
if (!(HitObject is IHasPathWithRepeats curveData))
return null;
// mathematically speaking this should be a whole number always, but floating-point arithmetic is not so kind
var index = (int)Math.Round(SegmentDuration == 0 ? 0 : (time - HitObject.StartTime) / SegmentDuration, MidpointRounding.AwayFromZero);
var index = SegmentDuration == 0 ? 0 : (time - StartTime) / SegmentDuration;
// avoid slicing the list & creating copies, if at all possible.
return index == 0 ? curveData.NodeSamples : curveData.NodeSamples.Skip(index).ToList();
@ -496,7 +505,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
/// <param name="column">The column to add the note to.</param>
/// <param name="startTime">The start time of the note.</param>
/// <param name="endTime">The end time of the note (set to <paramref name="startTime"/> for a non-hold note).</param>
private void addToPattern(Pattern pattern, int column, double startTime, double endTime)
private void addToPattern(Pattern pattern, int column, int startTime, int endTime)
{
ManiaHitObject newObject;