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Merge pull request #18749 from molneya/accuracy-pp-curve

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Use accuracy instead of score for mania pp calculation
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Dan Balasescu 2022-06-29 17:31:19 +09:00 committed by GitHub
commit fd0a1e2b9f
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4 changed files with 13 additions and 93 deletions
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8
osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyAttributes.cs
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@ -19,12 +19,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
[JsonProperty("great_hit_window")]
public double GreatHitWindow { get; set; }
/// <summary>
/// The score multiplier applied via score-reducing mods.
/// </summary>
[JsonProperty("score_multiplier")]
public double ScoreMultiplier { get; set; }
public override IEnumerable<(int attributeId, object value)> ToDatabaseAttributes()
{
foreach (var v in base.ToDatabaseAttributes())
@ -33,7 +27,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
yield return (ATTRIB_ID_MAX_COMBO, MaxCombo);
yield return (ATTRIB_ID_DIFFICULTY, StarRating);
yield return (ATTRIB_ID_GREAT_HIT_WINDOW, GreatHitWindow);
yield return (ATTRIB_ID_SCORE_MULTIPLIER, ScoreMultiplier);
}
public override void FromDatabaseAttributes(IReadOnlyDictionary<int, double> values, IBeatmapOnlineInfo onlineInfo)
@ -43,7 +36,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
MaxCombo = (int)values[ATTRIB_ID_MAX_COMBO];
StarRating = values[ATTRIB_ID_DIFFICULTY];
GreatHitWindow = values[ATTRIB_ID_GREAT_HIT_WINDOW];
ScoreMultiplier = values[ATTRIB_ID_SCORE_MULTIPLIER];
}
}
}

28
osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
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@ -53,7 +53,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
// In osu-stable mania, rate-adjustment mods don't affect the hit window.
// This is done the way it is to introduce fractional differences in order to match osu-stable for the time being.
GreatHitWindow = Math.Ceiling((int)(getHitWindow300(mods) * clockRate) / clockRate),
ScoreMultiplier = getScoreMultiplier(mods),
MaxCombo = beatmap.HitObjects.Sum(maxComboForObject)
};
}
@ -147,32 +146,5 @@ namespace osu.Game.Rulesets.Mania.Difficulty
return value;
}
}
private double getScoreMultiplier(Mod[] mods)
{
double scoreMultiplier = 1;
foreach (var m in mods)
{
switch (m)
{
case ManiaModNoFail:
case ManiaModEasy:
case ManiaModHalfTime:
scoreMultiplier *= 0.5;
break;
}
}
var maniaBeatmap = (ManiaBeatmap)Beatmap;
int diff = maniaBeatmap.TotalColumns - maniaBeatmap.OriginalTotalColumns;
if (diff > 0)
scoreMultiplier *= 0.9;
else if (diff < 0)
scoreMultiplier *= 0.9 + 0.04 * diff;
return scoreMultiplier;
}
}
}

7
osu.Game.Rulesets.Mania/Difficulty/ManiaPerformanceAttributes.cs
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@ -14,19 +14,12 @@ namespace osu.Game.Rulesets.Mania.Difficulty
[JsonProperty("difficulty")]
public double Difficulty { get; set; }
[JsonProperty("accuracy")]
public double Accuracy { get; set; }
[JsonProperty("scaled_score")]
public double ScaledScore { get; set; }
public override IEnumerable<PerformanceDisplayAttribute> GetAttributesForDisplay()
{
foreach (var attribute in base.GetAttributesForDisplay())
yield return attribute;
yield return new PerformanceDisplayAttribute(nameof(Difficulty), "Difficulty", Difficulty);
yield return new PerformanceDisplayAttribute(nameof(Accuracy), "Accuracy", Accuracy);
}
}
}

63
osu.Game.Rulesets.Mania/Difficulty/ManiaPerformanceCalculator.cs
View File

@ -15,15 +15,13 @@ namespace osu.Game.Rulesets.Mania.Difficulty
{
public class ManiaPerformanceCalculator : PerformanceCalculator
{
// Score after being scaled by non-difficulty-increasing mods
private double scaledScore;
private int countPerfect;
private int countGreat;
private int countGood;
private int countOk;
private int countMeh;
private int countMiss;
private double scoreAccuracy;
public ManiaPerformanceCalculator()
: base(new ManiaRuleset())
@ -34,82 +32,47 @@ namespace osu.Game.Rulesets.Mania.Difficulty
{
var maniaAttributes = (ManiaDifficultyAttributes)attributes;
scaledScore = score.TotalScore;
countPerfect = score.Statistics.GetValueOrDefault(HitResult.Perfect);
countGreat = score.Statistics.GetValueOrDefault(HitResult.Great);
countGood = score.Statistics.GetValueOrDefault(HitResult.Good);
countOk = score.Statistics.GetValueOrDefault(HitResult.Ok);
countMeh = score.Statistics.GetValueOrDefault(HitResult.Meh);
countMiss = score.Statistics.GetValueOrDefault(HitResult.Miss);
if (maniaAttributes.ScoreMultiplier > 0)
{
// Scale score up, so it's comparable to other keymods
scaledScore *= 1.0 / maniaAttributes.ScoreMultiplier;
}
scoreAccuracy = customAccuracy;
// Arbitrary initial value for scaling pp in order to standardize distributions across game modes.
// The specific number has no intrinsic meaning and can be adjusted as needed.
double multiplier = 0.8;
double multiplier = 8.0;
if (score.Mods.Any(m => m is ModNoFail))
multiplier *= 0.9;
multiplier *= 0.75;
if (score.Mods.Any(m => m is ModEasy))
multiplier *= 0.5;
double difficultyValue = computeDifficultyValue(maniaAttributes);
double accValue = computeAccuracyValue(difficultyValue, maniaAttributes);
double totalValue =
Math.Pow(
Math.Pow(difficultyValue, 1.1) +
Math.Pow(accValue, 1.1), 1.0 / 1.1
) * multiplier;
double totalValue = difficultyValue * multiplier;
return new ManiaPerformanceAttributes
{
Difficulty = difficultyValue,
Accuracy = accValue,
ScaledScore = scaledScore,
Total = totalValue
};
}
private double computeDifficultyValue(ManiaDifficultyAttributes attributes)
{
double difficultyValue = Math.Pow(5 * Math.Max(1, attributes.StarRating / 0.2) - 4.0, 2.2) / 135.0;
difficultyValue *= 1.0 + 0.1 * Math.Min(1.0, totalHits / 1500.0);
if (scaledScore <= 500000)
difficultyValue = 0;
else if (scaledScore <= 600000)
difficultyValue *= (scaledScore - 500000) / 100000 * 0.3;
else if (scaledScore <= 700000)
difficultyValue *= 0.3 + (scaledScore - 600000) / 100000 * 0.25;
else if (scaledScore <= 800000)
difficultyValue *= 0.55 + (scaledScore - 700000) / 100000 * 0.20;
else if (scaledScore <= 900000)
difficultyValue *= 0.75 + (scaledScore - 800000) / 100000 * 0.15;
else
difficultyValue *= 0.90 + (scaledScore - 900000) / 100000 * 0.1;
double difficultyValue = Math.Pow(Math.Max(attributes.StarRating - 0.15, 0.05), 2.2) // Star rating to pp curve
* Math.Max(0, 5 * scoreAccuracy - 4) // From 80% accuracy, 1/20th of total pp is awarded per additional 1% accuracy
* (1 + 0.1 * Math.Min(1, totalHits / 1500)); // Length bonus, capped at 1500 notes
return difficultyValue;
}
private double computeAccuracyValue(double difficultyValue, ManiaDifficultyAttributes attributes)
{
if (attributes.GreatHitWindow <= 0)
return 0;
// Lots of arbitrary values from testing.
// Considering to use derivation from perfect accuracy in a probabilistic manner - assume normal distribution
double accuracyValue = Math.Max(0.0, 0.2 - (attributes.GreatHitWindow - 34) * 0.006667)
* difficultyValue
* Math.Pow(Math.Max(0.0, scaledScore - 960000) / 40000, 1.1);
return accuracyValue;
}
private double totalHits => countPerfect + countOk + countGreat + countGood + countMeh + countMiss;
/// <summary>
/// Accuracy used to weight judgements independently from the score's actual accuracy.
/// </summary>
private double customAccuracy => (countPerfect * 320 + countGreat * 300 + countGood * 200 + countOk * 100 + countMeh * 50) / (totalHits * 320);
}
}