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Code Issues Releases Wiki Activity

Use accuracy for pp calculation

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This commit is contained in:
63411 2022-06-17 23:38:22 +08:00
parent 4bc26dbb48
commit 9fe7636138
1 changed files with 9 additions and 49 deletions
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58
osu.Game.Rulesets.Mania/Difficulty/ManiaPerformanceCalculator.cs
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@ -15,15 +15,14 @@ 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())
@ -34,23 +33,17 @@ 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;
@ -58,58 +51,25 @@ namespace osu.Game.Rulesets.Mania.Difficulty
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) // Accuracy curve
* (1 + 0.1 * Math.Min(1, totalHits / 1500)); // Length bonus
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;
private double customAccuracy => (countPerfect * 320 + countGreat * 300 + countGood * 200 + countOk * 100 + countMeh * 50) / (totalHits * 320);
}
}