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Code Issues Releases Wiki Activity

Remove int casts in difficulty calculation, fixup some comments

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This commit is contained in:
StanR 2021-10-09 12:08:57 +03:00
parent 17e0498860
commit 37632fe4dc
2 changed files with 14 additions and 6 deletions
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5
osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
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@ -56,7 +56,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
double starRating = basePerformance > 0.00001 ? Math.Cbrt(1.12) * 0.027 * (Math.Cbrt(100000 / Math.Pow(2, 1 / 1.1) * basePerformance) + 4) : 0;
double preempt = (int)IBeatmapDifficultyInfo.DifficultyRange(beatmap.Difficulty.ApproachRate, 1800, 1200, 450) / clockRate;
double preempt = IBeatmapDifficultyInfo.DifficultyRange(beatmap.Difficulty.ApproachRate, 1800, 1200, 450) / clockRate;
double drainRate = beatmap.Difficulty.DrainRate;
int maxCombo = beatmap.HitObjects.Count;
@ -102,8 +102,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
HitWindows hitWindows = new OsuHitWindows();
hitWindows.SetDifficulty(beatmap.Difficulty.OverallDifficulty);
// Todo: These int casts are temporary to achieve 1:1 results with osu!stable, and should be removed in the future
hitWindowGreat = (int)(hitWindows.WindowFor(HitResult.Great)) / clockRate;
hitWindowGreat = hitWindows.WindowFor(HitResult.Great) / clockRate;
return new Skill[]
{

15
osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs
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@ -40,9 +40,9 @@ namespace osu.Game.Rulesets.Osu.Difficulty
countMeh = Score.Statistics.GetValueOrDefault(HitResult.Meh);
countMiss = Score.Statistics.GetValueOrDefault(HitResult.Miss);
// Custom multipliers for NoFail and SpunOut.
double multiplier = 1.12; // This is being adjusted to keep the final pp value scaled around what it used to be when changing things.
// Custom multipliers for NoFail and SpunOut.
if (mods.Any(m => m is OsuModNoFail))
multiplier *= Math.Max(0.90, 1.0 - 0.02 * countMiss);
@ -114,11 +114,13 @@ namespace osu.Game.Rulesets.Osu.Difficulty
double approachRateBonus = 1.0 + (0.03 + 0.37 * approachRateTotalHitsFactor) * approachRateFactor;
// We want to give more reward for lower AR when it comes to aim and HD. This nerfs high AR and buffs lower AR.
if (mods.Any(m => m is OsuModBlinds))
aimValue *= 1.3 + (totalHits * (0.0016 / (1 + 2 * countMiss)) * Math.Pow(accuracy, 16)) * (1 - 0.003 * Attributes.DrainRate * Attributes.DrainRate);
else if (mods.Any(h => h is OsuModHidden))
{
// We want to give more reward for lower AR when it comes to aim and HD. This nerfs high AR and buffs lower AR.
aimValue *= 1.0 + 0.04 * (12.0 - Attributes.ApproachRate);
}
aimValue *= approachRateBonus;
@ -155,14 +157,20 @@ namespace osu.Game.Rulesets.Osu.Difficulty
speedValue *= 1.0 + (0.03 + 0.37 * approachRateTotalHitsFactor) * approachRateFactor;
// Increasing the speed value by object count for Blinds isn't ideal, so the minimum buff is given.
if (mods.Any(m => m is OsuModBlinds))
{
// Increasing the speed value by object count for Blinds isn't ideal, so the minimum buff is given.
speedValue *= 1.12;
}
else if (mods.Any(m => m is OsuModHidden))
{
// We want to give more reward for lower AR when it comes to aim and HD. This nerfs high AR and buffs lower AR.
speedValue *= 1.0 + 0.04 * (12.0 - Attributes.ApproachRate);
}
// Scale the speed value with accuracy and OD.
speedValue *= (0.95 + Math.Pow(Attributes.OverallDifficulty, 2) / 750) * Math.Pow(accuracy, (14.5 - Math.Max(Attributes.OverallDifficulty, 8)) / 2);
// Scale the speed value with # of 50s to punish doubletapping.
speedValue *= Math.Pow(0.98, countMeh < totalHits / 500.0 ? 0 : countMeh - totalHits / 500.0);
@ -199,6 +207,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
accuracyValue *= 1.14;
else if (mods.Any(m => m is OsuModHidden))
accuracyValue *= 1.08;
if (mods.Any(m => m is OsuModFlashlight))
accuracyValue *= 1.02;