diff --git a/osu.Game.Rulesets.Catch/Difficulty/Skills/Movement.cs b/osu.Game.Rulesets.Catch/Difficulty/Skills/Movement.cs index 4372ed938c..cfb3fe40be 100644 --- a/osu.Game.Rulesets.Catch/Difficulty/Skills/Movement.cs +++ b/osu.Game.Rulesets.Catch/Difficulty/Skills/Movement.cs @@ -9,7 +9,7 @@ using osu.Game.Rulesets.Mods; namespace osu.Game.Rulesets.Catch.Difficulty.Skills { - public class Movement : StrainSkill + public class Movement : StrainDecaySkill { private const float absolute_player_positioning_error = 16f; private const float normalized_hitobject_radius = 41.0f; diff --git a/osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs b/osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs index 2ba2ee6b4a..01d930d585 100644 --- a/osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs +++ b/osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs @@ -10,7 +10,7 @@ using osu.Game.Rulesets.Mods; namespace osu.Game.Rulesets.Mania.Difficulty.Skills { - public class Strain : StrainSkill + public class Strain : StrainDecaySkill { private const double individual_decay_base = 0.125; private const double overall_decay_base = 0.30; @@ -71,7 +71,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty.Skills return individualStrain + overallStrain - CurrentStrain; } - protected override double GetPeakStrain(double offset) + protected override double CalculateInitialStrain(double offset) => applyDecay(individualStrain, offset - Previous[0].StartTime, individual_decay_base) + applyDecay(overallStrain, offset - Previous[0].StartTime, overall_decay_base); diff --git a/osu.Game.Rulesets.Osu/Difficulty/Skills/Aim.cs b/osu.Game.Rulesets.Osu/Difficulty/Skills/Aim.cs index 16a18cbcb9..f08c19af76 100644 --- a/osu.Game.Rulesets.Osu/Difficulty/Skills/Aim.cs +++ b/osu.Game.Rulesets.Osu/Difficulty/Skills/Aim.cs @@ -12,7 +12,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills /// /// Represents the skill required to correctly aim at every object in the map with a uniform CircleSize and normalized distances. /// - public class Aim : OsuStrainSkill + public class Aim : OsuStrainDecaySkill { private const double angle_bonus_begin = Math.PI / 3; private const double timing_threshold = 107; diff --git a/osu.Game.Rulesets.Osu/Difficulty/Skills/OsuStrainSkill.cs b/osu.Game.Rulesets.Osu/Difficulty/Skills/OsuStrainSkill.cs index e47edc37cc..c1bee9b202 100644 --- a/osu.Game.Rulesets.Osu/Difficulty/Skills/OsuStrainSkill.cs +++ b/osu.Game.Rulesets.Osu/Difficulty/Skills/OsuStrainSkill.cs @@ -10,7 +10,7 @@ using osu.Framework.Utils; namespace osu.Game.Rulesets.Osu.Difficulty.Skills { - public abstract class OsuStrainSkill : StrainSkill + public abstract class OsuStrainDecaySkill : StrainDecaySkill { /// /// The number of sections with the highest strains, which the peak strain reductions will apply to. @@ -28,7 +28,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills /// protected virtual double DifficultyMultiplier => 1.06; - protected OsuStrainSkill(Mod[] mods) + protected OsuStrainDecaySkill(Mod[] mods) : base(mods) { } diff --git a/osu.Game.Rulesets.Osu/Difficulty/Skills/Speed.cs b/osu.Game.Rulesets.Osu/Difficulty/Skills/Speed.cs index 433150a025..bb40ff657a 100644 --- a/osu.Game.Rulesets.Osu/Difficulty/Skills/Speed.cs +++ b/osu.Game.Rulesets.Osu/Difficulty/Skills/Speed.cs @@ -12,7 +12,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills /// /// Represents the skill required to press keys with regards to keeping up with the speed at which objects need to be hit. /// - public class Speed : OsuStrainSkill + public class Speed : OsuStrainDecaySkill { private const double single_spacing_threshold = 125; @@ -151,14 +151,5 @@ namespace osu.Game.Rulesets.Osu.Difficulty.Skills return (1 + (speedBonus - 1) * 0.75) * angleBonus * (0.95 + speedBonus * Math.Pow(distance / single_spacing_threshold, 3.5)) / osuCurrent.StrainTime; } - protected override double GetTotalCurrentStrain(DifficultyHitObject current) - { - return base.GetTotalCurrentStrain(current) * calculateRhythmBonus(current.StartTime); - } - - protected override double GetPeakStrain(double time) - { - return base.GetPeakStrain(time);// * calculateRhythmBonus(current.StartTime); - } } } diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs index 769d021362..0c17ca66b9 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Colour.cs @@ -14,7 +14,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills /// /// Calculates the colour coefficient of taiko difficulty. /// - public class Colour : StrainSkill + public class Colour : StrainDecaySkill { protected override double SkillMultiplier => 1; protected override double StrainDecayBase => 0.4; diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Rhythm.cs b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Rhythm.cs index a32f6ebe0d..973e55f4b4 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Rhythm.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Rhythm.cs @@ -14,7 +14,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills /// /// Calculates the rhythm coefficient of taiko difficulty. /// - public class Rhythm : StrainSkill + public class Rhythm : StrainDecaySkill { protected override double SkillMultiplier => 10; protected override double StrainDecayBase => 0; diff --git a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs index 4cceadb23f..54cf233d69 100644 --- a/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs +++ b/osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs @@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty.Skills /// /// The reference play style chosen uses two hands, with full alternating (the hand changes after every hit). /// - public class Stamina : StrainSkill + public class Stamina : StrainDecaySkill { protected override double SkillMultiplier => 1; protected override double StrainDecayBase => 0.4; diff --git a/osu.Game/Rulesets/Difficulty/Skills/StrainDecaySkill.cs b/osu.Game/Rulesets/Difficulty/Skills/StrainDecaySkill.cs new file mode 100644 index 0000000000..dab1081abb --- /dev/null +++ b/osu.Game/Rulesets/Difficulty/Skills/StrainDecaySkill.cs @@ -0,0 +1,64 @@ +// 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 System.Collections.Generic; +using System.Linq; +using osu.Game.Rulesets.Difficulty.Preprocessing; +using osu.Game.Rulesets.Mods; + +namespace osu.Game.Rulesets.Difficulty.Skills +{ + /// + /// Used to processes strain values of s, keep track of strain levels caused by the processed objects + /// and to calculate a final difficulty value representing the difficulty of hitting all the processed objects. + /// + public abstract class StrainDecaySkill : StrainSkill + { + /// + /// Strain values are multiplied by this number for the given skill. Used to balance the value of different skills between each other. + /// + protected abstract double SkillMultiplier { get; } + + /// + /// Determines how quickly strain decays for the given skill. + /// For example a value of 0.15 indicates that strain decays to 15% of its original value in one second. + /// + protected abstract double StrainDecayBase { get; } + + /// + /// The current strain level. + /// + protected double CurrentStrain { get; private set; } = 1; + + protected StrainDecaySkill(Mod[] mods) + : base(mods) + { + } + + /// + /// Retrieves the peak strain at a point in time. + /// + /// The time to retrieve the peak strain at. + /// The peak strain. + protected override double CalculateInitialStrain(double time) => CurrentStrain * strainDecay(time - Previous[0].StartTime); + + /// + /// Returns the strain value of . This value is calculated with or without respect to previous objects. + /// + protected override double StrainValueAt(DifficultyHitObject current) + { + CurrentStrain *= strainDecay(current.DeltaTime); + CurrentStrain += StrainValueOf(current) * SkillMultiplier; + + return CurrentStrain; + } + + /// + /// Calculates the strain value of a . This value is affected by previously processed objects. + /// + protected abstract double StrainValueOf(DifficultyHitObject current); + + private double strainDecay(double ms) => Math.Pow(StrainDecayBase, ms / 1000); + } +} diff --git a/osu.Game/Rulesets/Difficulty/Skills/StrainSkill.cs b/osu.Game/Rulesets/Difficulty/Skills/StrainSkill.cs index 95b0fe43fc..e8ae452506 100644 --- a/osu.Game/Rulesets/Difficulty/Skills/StrainSkill.cs +++ b/osu.Game/Rulesets/Difficulty/Skills/StrainSkill.cs @@ -15,27 +15,11 @@ namespace osu.Game.Rulesets.Difficulty.Skills /// public abstract class StrainSkill : Skill { - /// - /// Strain values are multiplied by this number for the given skill. Used to balance the value of different skills between each other. - /// - protected abstract double SkillMultiplier { get; } - - /// - /// Determines how quickly strain decays for the given skill. - /// For example a value of 0.15 indicates that strain decays to 15% of its original value in one second. - /// - protected abstract double StrainDecayBase { get; } - /// /// The weight by which each strain value decays. /// protected virtual double DecayWeight => 0.9; - /// - /// The current strain level. - /// - protected double CurrentStrain { get; private set; } = 1; - /// /// The length of each strain section. /// @@ -52,6 +36,11 @@ namespace osu.Game.Rulesets.Difficulty.Skills { } + /// + /// Returns the strain value of . This value is calculated with or without respect to previous objects. + /// + protected abstract double StrainValueAt(DifficultyHitObject current); + /// /// Process a and update current strain values accordingly. /// @@ -68,15 +57,7 @@ namespace osu.Game.Rulesets.Difficulty.Skills currentSectionEnd += SectionLength; } - CurrentStrain *= strainDecay(current.DeltaTime); - CurrentStrain += StrainValueOf(current) * SkillMultiplier; - - currentSectionPeak = Math.Max(GetTotalCurrentStrain(current), currentSectionPeak); - } - - protected virtual double GetTotalCurrentStrain(DifficultyHitObject current) - { - return CurrentStrain; + currentSectionPeak = Math.Max(StrainValueAt(current), currentSectionPeak); } /// @@ -93,9 +74,9 @@ namespace osu.Game.Rulesets.Difficulty.Skills /// The beginning of the new section in milliseconds. private void startNewSectionFrom(double time) { - // The maximum strain of the new section is not zero by default, strain decays as usual regardless of section boundaries. + // The maximum strain of the new section is not zero by default // This means we need to capture the strain level at the beginning of the new section, and use that as the initial peak level. - currentSectionPeak = GetPeakStrain(time); + currentSectionPeak = CalculateInitialStrain(time); } /// @@ -103,7 +84,7 @@ namespace osu.Game.Rulesets.Difficulty.Skills /// /// The time to retrieve the peak strain at. /// The peak strain. - protected virtual double GetPeakStrain(double time) => CurrentStrain * strainDecay(time - Previous[0].StartTime); + protected abstract double CalculateInitialStrain(double time); /// /// Returns a live enumerable of the peak strains for each section of the beatmap, @@ -129,12 +110,5 @@ namespace osu.Game.Rulesets.Difficulty.Skills return difficulty; } - - /// - /// Calculates the strain value of a . This value is affected by previously processed objects. - /// - protected abstract double StrainValueOf(DifficultyHitObject current); - - private double strainDecay(double ms) => Math.Pow(StrainDecayBase, ms / 1000); } }