diff --git a/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyAttributes.cs b/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyAttributes.cs new file mode 100644 index 0000000000..d18d03b1db --- /dev/null +++ b/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyAttributes.cs @@ -0,0 +1,19 @@ +// Copyright (c) 2007-2018 ppy Pty Ltd . +// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE + +using osu.Game.Rulesets.Difficulty; +using osu.Game.Rulesets.Mods; + +namespace osu.Game.Rulesets.Taiko.Difficulty +{ + public class TaikoDifficultyAttributes : DifficultyAttributes + { + public double GreatHitWindow; + public int MaxCombo; + + public TaikoDifficultyAttributes(Mod[] mods, double starRating) + : base(mods, starRating) + { + } + } +} diff --git a/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs b/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs index 473c205293..190717e024 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs @@ -3,6 +3,7 @@ using System; using System.Collections.Generic; +using System.Linq; using osu.Game.Beatmaps; using osu.Game.Rulesets.Difficulty; using osu.Game.Rulesets.Mods; @@ -47,7 +48,12 @@ namespace osu.Game.Rulesets.Taiko.Difficulty double starRating = calculateDifficulty(difficultyHitObjects, timeRate) * star_scaling_factor; - return new DifficultyAttributes(mods, starRating); + return new TaikoDifficultyAttributes(mods, starRating) + { + // Todo: This int cast is temporary to achieve 1:1 results with osu!stable, and should be remoevd in the future + GreatHitWindow = (int)(beatmap.HitObjects.First().HitWindows.Great / 2) / timeRate, + MaxCombo = beatmap.HitObjects.Count(h => h is Hit) + }; } private bool calculateStrainValues(List objects, double timeRate) diff --git a/osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.cs b/osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.cs index 53cfb4fd0f..f530b6725c 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.cs @@ -8,13 +8,12 @@ using osu.Game.Beatmaps; using osu.Game.Rulesets.Difficulty; using osu.Game.Rulesets.Mods; using osu.Game.Rulesets.Scoring; -using osu.Game.Rulesets.Taiko.Objects; namespace osu.Game.Rulesets.Taiko.Difficulty { public class TaikoPerformanceCalculator : PerformanceCalculator { - private readonly int beatmapMaxCombo; + protected new TaikoDifficultyAttributes Attributes => (TaikoDifficultyAttributes)base.Attributes; private Mod[] mods; private int countGreat; @@ -25,7 +24,6 @@ namespace osu.Game.Rulesets.Taiko.Difficulty public TaikoPerformanceCalculator(Ruleset ruleset, WorkingBeatmap beatmap, Score score) : base(ruleset, beatmap, score) { - beatmapMaxCombo = Beatmap.HitObjects.Count(h => h is Hit); } public override double Calculate(Dictionary categoryDifficulty = null) @@ -78,8 +76,8 @@ namespace osu.Game.Rulesets.Taiko.Difficulty strainValue *= Math.Pow(0.985, countMiss); // Combo scaling - if (beatmapMaxCombo > 0) - strainValue *= Math.Min(Math.Pow(Score.MaxCombo, 0.5) / Math.Pow(beatmapMaxCombo, 0.5), 1.0); + if (Attributes.MaxCombo > 0) + strainValue *= Math.Min(Math.Pow(Score.MaxCombo, 0.5) / Math.Pow(Attributes.MaxCombo, 0.5), 1.0); if (mods.Any(m => m is ModHidden)) strainValue *= 1.025; @@ -94,14 +92,12 @@ namespace osu.Game.Rulesets.Taiko.Difficulty private double computeAccuracyValue() { - // Todo: This int cast is temporary to achieve 1:1 results with osu!stable, and should be remoevd in the future - double hitWindowGreat = (int)(Beatmap.HitObjects.First().HitWindows.Great / 2) / TimeRate; - if (hitWindowGreat <= 0) + 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 accValue = Math.Pow(150.0 / hitWindowGreat, 1.1) * Math.Pow(Score.Accuracy, 15) * 22.0; + double accValue = Math.Pow(150.0 / Attributes.GreatHitWindow, 1.1) * Math.Pow(Score.Accuracy, 15) * 22.0; // Bonus for many hitcircles - it's harder to keep good accuracy up for longer return accValue * Math.Min(1.15, Math.Pow(totalHits / 1500.0, 0.3));