diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Evaluators/ColourEvaluator.cs b/osu.Game.Rulesets.Taiko/Difficulty/Evaluators/ColourEvaluator.cs new file mode 100644 index 0000000000..159f9a4508 --- /dev/null +++ b/osu.Game.Rulesets.Taiko/Difficulty/Evaluators/ColourEvaluator.cs @@ -0,0 +1,33 @@ +using System; +using osu.Game.Rulesets.Difficulty.Preprocessing; +using osu.Game.Rulesets.Taiko.Difficulty.Preprocessing; + +namespace osu.Game.Rulesets.Taiko.Difficulty.Evaluators +{ + public class ColourEvaluator + { + private static double sigmoid(double val, double center, double width) + { + return Math.Tanh(Math.E * -(val - center) / width); + } + + public static double EvaluateDifficultyOf(DifficultyHitObject current) + { + TaikoDifficultyHitObject taikoCurrent = (TaikoDifficultyHitObject)current; + TaikoDifficultyHitObjectColour colour = taikoCurrent.Colour; + if (colour == null) return 0; + double objectStrain = 1; + if (colour.Delta) + { + objectStrain /= Math.Pow(colour.DeltaRunLength, 0.25); + } + else + { + objectStrain *= sigmoid(colour.DeltaRunLength, 3, 3) * 0.3 + 0.3; + } + objectStrain *= -sigmoid(colour.RepetitionInterval, 8, 8); + // Console.WriteLine($"{current.StartTime},{colour.GetHashCode()},{colour.Delta},{colour.DeltaRunLength},{colour.RepetitionInterval},{objectStrain}"); + return objectStrain; + } + } +} \ No newline at end of file diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObject.cs b/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObject.cs index b34e87bc83..8d2eadafe1 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObject.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObject.cs @@ -20,6 +20,10 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Preprocessing /// public readonly TaikoDifficultyHitObjectRhythm Rhythm; + /// + /// Colour data for this hit object. This is used by colour evaluator to calculate colour, but can be used + /// differently by other skills in the future. + /// public readonly TaikoDifficultyHitObjectColour Colour; /// @@ -45,7 +49,19 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Preprocessing HitType = currentHit?.Type; // Need to be done after HitType is set. - Colour = TaikoDifficultyHitObjectColour.GetInstanceFor(this, (TaikoDifficultyHitObject) objects.LastOrDefault()); + if (HitType != null) + { + // Get previous hit object, while skipping one that does not have defined colour (sliders and spinners). + // Without skipping through these, sliders and spinners would have contributed to a colour change for the next note. + TaikoDifficultyHitObject previousHitObject = (TaikoDifficultyHitObject)objects.LastOrDefault(); + while (previousHitObject != null && previousHitObject.Colour == null) + { + previousHitObject = (TaikoDifficultyHitObject)previousHitObject.Previous(0); + } + + Colour = TaikoDifficultyHitObjectColour.GetInstanceFor(this); + } + } /// diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObjectColour.cs b/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObjectColour.cs index a55fdc6e9f..ce65fd0552 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObjectColour.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Preprocessing/TaikoDifficultyHitObjectColour.cs @@ -33,9 +33,9 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Preprocessing /// as a static function instead of constructor to allow for reusing existing instances. /// TODO: findRepetitionInterval needs to be called a final time after all hitObjects have been processed. /// - public static TaikoDifficultyHitObjectColour GetInstanceFor( - TaikoDifficultyHitObject hitObject, TaikoDifficultyHitObject lastObject) + public static TaikoDifficultyHitObjectColour GetInstanceFor(TaikoDifficultyHitObject hitObject) { + TaikoDifficultyHitObject lastObject = (TaikoDifficultyHitObject) hitObject.Previous(0); TaikoDifficultyHitObjectColour previous = lastObject?.Colour; bool delta = lastObject == null || hitObject.HitType != lastObject.HitType; if (previous != null && delta == previous.Delta) diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs index 0c17ca66b9..9a8b350e22 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs @@ -6,7 +6,7 @@ using osu.Game.Rulesets.Difficulty.Preprocessing; using osu.Game.Rulesets.Difficulty.Skills; using osu.Game.Rulesets.Difficulty.Utils; using osu.Game.Rulesets.Mods; -using osu.Game.Rulesets.Taiko.Difficulty.Preprocessing; +using osu.Game.Rulesets.Taiko.Difficulty.Evaluators; using osu.Game.Rulesets.Taiko.Objects; namespace osu.Game.Rulesets.Taiko.Difficulty.Skills @@ -19,27 +19,6 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills protected override double SkillMultiplier => 1; protected override double StrainDecayBase => 0.4; - /// - /// Maximum number of entries to keep in . - /// - private const int mono_history_max_length = 5; - - /// - /// Queue with the lengths of the last most recent mono (single-colour) patterns, - /// with the most recent value at the end of the queue. - /// - private readonly LimitedCapacityQueue monoHistory = new LimitedCapacityQueue(mono_history_max_length); - - /// - /// The of the last object hit before the one being considered. - /// - private HitType? previousHitType; - - /// - /// Length of the current mono pattern. - /// - private int currentMonoLength; - public Colour(Mod[] mods) : base(mods) { @@ -47,95 +26,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills protected override double StrainValueOf(DifficultyHitObject current) { - // changing from/to a drum roll or a swell does not constitute a colour change. - // hits spaced more than a second apart are also exempt from colour strain. - if (!(current.LastObject is Hit && current.BaseObject is Hit && current.DeltaTime < 1000)) - { - monoHistory.Clear(); - - var currentHit = current.BaseObject as Hit; - currentMonoLength = currentHit != null ? 1 : 0; - previousHitType = currentHit?.Type; - - return 0.0; - } - - var taikoCurrent = (TaikoDifficultyHitObject)current; - - double objectStrain = 0.0; - - if (previousHitType != null && taikoCurrent.HitType != previousHitType) - { - // The colour has changed. - objectStrain = 1.0; - - if (monoHistory.Count < 2) - { - // There needs to be at least two streaks to determine a strain. - objectStrain = 0.0; - } - else if ((monoHistory[^1] + currentMonoLength) % 2 == 0) - { - // The last streak in the history is guaranteed to be a different type to the current streak. - // If the total number of notes in the two streaks is even, nullify this object's strain. - objectStrain = 0.0; - } - - objectStrain *= repetitionPenalties(); - currentMonoLength = 1; - } - else - { - currentMonoLength += 1; - } - - previousHitType = taikoCurrent.HitType; - return objectStrain; + return ColourEvaluator.EvaluateDifficultyOf(current); } - - /// - /// The penalty to apply due to the length of repetition in colour streaks. - /// - private double repetitionPenalties() - { - const int most_recent_patterns_to_compare = 2; - double penalty = 1.0; - - monoHistory.Enqueue(currentMonoLength); - - for (int start = monoHistory.Count - most_recent_patterns_to_compare - 1; start >= 0; start--) - { - if (!isSamePattern(start, most_recent_patterns_to_compare)) - continue; - - int notesSince = 0; - for (int i = start; i < monoHistory.Count; i++) notesSince += monoHistory[i]; - penalty *= repetitionPenalty(notesSince); - break; - } - - return penalty; - } - - /// - /// Determines whether the last patterns have repeated in the history - /// of single-colour note sequences, starting from . - /// - private bool isSamePattern(int start, int mostRecentPatternsToCompare) - { - for (int i = 0; i < mostRecentPatternsToCompare; i++) - { - if (monoHistory[start + i] != monoHistory[monoHistory.Count - mostRecentPatternsToCompare + i]) - return false; - } - - return true; - } - - /// - /// Calculates the strain penalty for a colour pattern repetition. - /// - /// The number of notes since the last repetition of the pattern. - private double repetitionPenalty(int notesSince) => Math.Min(1.0, 0.032 * notesSince); } } diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Skills/SingleKeyStamina.cs b/osu.Game.Rulesets.Taiko/Difficulty/Skills/SingleKeyStamina.cs index cabfd231d8..4b8a8033a4 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Skills/SingleKeyStamina.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Skills/SingleKeyStamina.cs @@ -1,8 +1,10 @@ // Copyright (c) ppy Pty Ltd . Licensed under the MIT Licence. // See the LICENCE file in the repository root for full licence text. +using System; using osu.Game.Rulesets.Difficulty.Preprocessing; using osu.Game.Rulesets.Difficulty.Skills; +using osu.Game.Rulesets.Taiko.Difficulty.Evaluators; namespace osu.Game.Rulesets.Taiko.Difficulty.Skills { @@ -11,6 +13,10 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills /// public class SingleKeyStamina { + private const double StrainDecayBase = 0.4; + + private double CurrentStrain = 0; + private double? previousHitTime; /// @@ -24,19 +30,23 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills return 0; } - double objectStrain = 0.5; - objectStrain += speedBonus(current.StartTime - previousHitTime.Value); + // CurrentStrain += strainDecay(current.StartTime - current.Previous(0).StartTime); + // CurrentStrain += 0.5 + 0.5 * strainDecay(current.StartTime - current.Previous(0).StartTime); + CurrentStrain += 1; + CurrentStrain *= ColourEvaluator.EvaluateDifficultyOf(current) * 0.1 + 0.9; + CurrentStrain *= strainDecay(current.StartTime - previousHitTime.Value); previousHitTime = current.StartTime; - return objectStrain; + return CurrentStrain; } /// /// Applies a speed bonus dependent on the time since the last hit performed using this key. /// /// The duration between the current and previous note hit using the same key. - private double speedBonus(double notePairDuration) + private double strainDecay(double notePairDuration) { - return 175 / (notePairDuration + 100); + return Math.Pow(StrainDecayBase, notePairDuration / 1000); + // return 175 / (notePairDuration + 100); } } } diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs index 61bcbfa59d..7196b68df2 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs @@ -5,6 +5,7 @@ using osu.Game.Rulesets.Difficulty.Preprocessing; using osu.Game.Rulesets.Difficulty.Skills; using osu.Game.Rulesets.Mods; using osu.Game.Rulesets.Taiko.Difficulty.Preprocessing; +using osu.Game.Rulesets.Taiko.Difficulty.Evaluators; using osu.Game.Rulesets.Taiko.Objects; namespace osu.Game.Rulesets.Taiko.Difficulty.Skills @@ -17,8 +18,8 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills /// public class Stamina : StrainDecaySkill { - protected override double SkillMultiplier => 1; - protected override double StrainDecayBase => 0.4; + protected override double SkillMultiplier => 3.6; + protected override double StrainDecayBase => 0; private readonly SingleKeyStamina[] centreKeyStamina = { @@ -76,7 +77,9 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills } TaikoDifficultyHitObject hitObject = (TaikoDifficultyHitObject)current; - return getNextSingleKeyStamina(hitObject).StrainValueOf(hitObject); + double objectStrain = getNextSingleKeyStamina(hitObject).StrainValueOf(hitObject); + // objectStrain *= ColourEvaluator.EvaluateDifficultyOf(current) * 0.3 + 0.7; + return objectStrain; } } } diff --git a/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs b/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs index 4dd3b0b8cc..423903db2f 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs @@ -20,8 +20,8 @@ namespace osu.Game.Rulesets.Taiko.Difficulty { public class TaikoDifficultyCalculator : DifficultyCalculator { - private const double rhythm_skill_multiplier = 0.014; - private const double colour_skill_multiplier = 0.01; + private const double rhythm_skill_multiplier = 0.017; + private const double colour_skill_multiplier = 0.028; private const double stamina_skill_multiplier = 0.021; public TaikoDifficultyCalculator(IRulesetInfo ruleset, IWorkingBeatmap beatmap) @@ -59,7 +59,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty // Find repetition interval for the final TaikoDifficultyHitObjectColour // TODO: Might be a good idea to refactor this - ((TaikoDifficultyHitObject)difficultyHitObject.Last()).Colour.FindRepetitionInterval(); + ((TaikoDifficultyHitObject)difficultyHitObject.Last()).Colour?.FindRepetitionInterval(); return difficultyHitObject; } @@ -76,18 +76,18 @@ namespace osu.Game.Rulesets.Taiko.Difficulty double rhythmRating = rhythm.DifficultyValue() * rhythm_skill_multiplier; double staminaRating = stamina.DifficultyValue() * stamina_skill_multiplier; - double staminaPenalty = simpleColourPenalty(staminaRating, colourRating); - staminaRating *= staminaPenalty; + // double staminaPenalty = simpleColourPenalty(staminaRating, colourRating); + // staminaRating *= staminaPenalty; //TODO : This is a temporary fix for the stamina rating of converts, due to their low colour variance. - if (beatmap.BeatmapInfo.Ruleset.OnlineID == 0 && colourRating < 0.05) - { - staminaPenalty *= 0.25; - } + // if (beatmap.BeatmapInfo.Ruleset.OnlineID == 0 && colourRating < 0.05) + // { + // staminaPenalty *= 0.25; + // } - double combinedRating = locallyCombinedDifficulty(colour, rhythm, stamina, staminaPenalty); + double combinedRating = locallyCombinedDifficulty(colour, rhythm, stamina); double separatedRating = norm(1.5, colourRating, rhythmRating, staminaRating); - double starRating = 1.4 * separatedRating + 0.5 * combinedRating; + double starRating = 1.9 * combinedRating; starRating = rescale(starRating); HitWindows hitWindows = new TaikoHitWindows(); @@ -133,7 +133,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty /// For each section, the peak strains of all separate skills are combined into a single peak strain for the section. /// The resulting partial rating of the beatmap is a weighted sum of the combined peaks (higher peaks are weighted more). /// - private double locallyCombinedDifficulty(Colour colour, Rhythm rhythm, Stamina stamina, double staminaPenalty) + private double locallyCombinedDifficulty(Colour colour, Rhythm rhythm, Stamina stamina) { List peaks = new List(); @@ -145,7 +145,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty { double colourPeak = colourPeaks[i] * colour_skill_multiplier; double rhythmPeak = rhythmPeaks[i] * rhythm_skill_multiplier; - double staminaPeak = staminaPeaks[i] * stamina_skill_multiplier * staminaPenalty; + double staminaPeak = staminaPeaks[i] * stamina_skill_multiplier; double peak = norm(2, colourPeak, rhythmPeak, staminaPeak);