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Merge pull request #10453 from smoogipoo/fix-mania-diffcalc
This commit is contained in:
Dean Herbert
GitHub
commit
af99273581
@ -13,7 +13,7 @@ namespace osu.Game.Rulesets.Mania.Tests
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{
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protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
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[TestCase(2.3683365342338796d, "diffcalc-test")]
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[TestCase(2.3449735700206298d, "diffcalc-test")]
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public void Test(double expected, string name)
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=> base.Test(expected, name);
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@ -21,13 +21,20 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
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/// </summary>
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public int TotalColumns => Stages.Sum(g => g.Columns);
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/// <summary>
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/// The total number of columns that were present in this <see cref="ManiaBeatmap"/> before any user adjustments.
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/// </summary>
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public readonly int OriginalTotalColumns;
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/// <summary>
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/// Creates a new <see cref="ManiaBeatmap"/>.
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/// </summary>
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/// <param name="defaultStage">The initial stages.</param>
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public ManiaBeatmap(StageDefinition defaultStage)
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/// <param name="originalTotalColumns">The total number of columns present before any user adjustments. Defaults to the total columns in <paramref name="defaultStage"/>.</param>
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public ManiaBeatmap(StageDefinition defaultStage, int? originalTotalColumns = null)
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{
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Stages.Add(defaultStage);
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OriginalTotalColumns = originalTotalColumns ?? defaultStage.Columns;
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}
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public override IEnumerable<BeatmapStatistic> GetStatistics()
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@ -28,6 +28,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
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public bool Dual;
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public readonly bool IsForCurrentRuleset;
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private readonly int originalTargetColumns;
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// Internal for testing purposes
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internal FastRandom Random { get; private set; }
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@ -65,6 +67,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
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else
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TargetColumns = Math.Max(4, Math.Min((int)roundedOverallDifficulty + 1, 7));
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}
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originalTargetColumns = TargetColumns;
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}
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public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
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@ -81,7 +85,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
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protected override Beatmap<ManiaHitObject> CreateBeatmap()
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{
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beatmap = new ManiaBeatmap(new StageDefinition { Columns = TargetColumns });
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beatmap = new ManiaBeatmap(new StageDefinition { Columns = TargetColumns }, originalTargetColumns);
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if (Dual)
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beatmap.Stages.Add(new StageDefinition { Columns = TargetColumns });
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@ -8,5 +8,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
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public class ManiaDifficultyAttributes : DifficultyAttributes
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{
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public double GreatHitWindow;
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public double ScoreMultiplier;
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}
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}
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@ -1,6 +1,7 @@
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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using osu.Game.Beatmaps;
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@ -10,10 +11,12 @@ using osu.Game.Rulesets.Difficulty.Skills;
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using osu.Game.Rulesets.Mania.Beatmaps;
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using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Mania.Difficulty.Skills;
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using osu.Game.Rulesets.Mania.MathUtils;
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using osu.Game.Rulesets.Mania.Mods;
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using osu.Game.Rulesets.Mania.Objects;
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using osu.Game.Rulesets.Mania.Scoring;
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using osu.Game.Rulesets.Mods;
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using osu.Game.Rulesets.Objects;
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using osu.Game.Rulesets.Scoring;
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namespace osu.Game.Rulesets.Mania.Difficulty
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@ -23,11 +26,13 @@ namespace osu.Game.Rulesets.Mania.Difficulty
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private const double star_scaling_factor = 0.018;
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private readonly bool isForCurrentRuleset;
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private readonly double originalOverallDifficulty;
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public ManiaDifficultyCalculator(Ruleset ruleset, WorkingBeatmap beatmap)
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: base(ruleset, beatmap)
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{
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isForCurrentRuleset = beatmap.BeatmapInfo.Ruleset.Equals(ruleset.RulesetInfo);
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originalOverallDifficulty = beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty;
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}
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protected override DifficultyAttributes CreateDifficultyAttributes(IBeatmap beatmap, Mod[] mods, Skill[] skills, double clockRate)
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@ -40,64 +45,33 @@ namespace osu.Game.Rulesets.Mania.Difficulty
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return new ManiaDifficultyAttributes
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{
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StarRating = difficultyValue(skills) * star_scaling_factor,
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StarRating = skills[0].DifficultyValue() * star_scaling_factor,
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Mods = mods,
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// Todo: This int cast is temporary to achieve 1:1 results with osu!stable, and should be removed in the future
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GreatHitWindow = (int)(hitWindows.WindowFor(HitResult.Great)) / clockRate,
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GreatHitWindow = (int)Math.Ceiling(getHitWindow300(mods) / clockRate),
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ScoreMultiplier = getScoreMultiplier(beatmap, mods),
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MaxCombo = beatmap.HitObjects.Sum(h => h is HoldNote ? 2 : 1),
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Skills = skills
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};
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}
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private double difficultyValue(Skill[] skills)
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{
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// Preprocess the strains to find the maximum overall + individual (aggregate) strain from each section
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var overall = skills.OfType<Overall>().Single();
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var aggregatePeaks = new List<double>(Enumerable.Repeat(0.0, overall.StrainPeaks.Count));
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foreach (var individual in skills.OfType<Individual>())
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{
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for (int i = 0; i < individual.StrainPeaks.Count; i++)
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{
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double aggregate = individual.StrainPeaks[i] + overall.StrainPeaks[i];
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if (aggregate > aggregatePeaks[i])
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aggregatePeaks[i] = aggregate;
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}
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}
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aggregatePeaks.Sort((a, b) => b.CompareTo(a)); // Sort from highest to lowest strain.
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double difficulty = 0;
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double weight = 1;
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// Difficulty is the weighted sum of the highest strains from every section.
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foreach (double strain in aggregatePeaks)
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{
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difficulty += strain * weight;
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weight *= 0.9;
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}
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return difficulty;
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}
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protected override IEnumerable<DifficultyHitObject> CreateDifficultyHitObjects(IBeatmap beatmap, double clockRate)
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{
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for (int i = 1; i < beatmap.HitObjects.Count; i++)
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yield return new ManiaDifficultyHitObject(beatmap.HitObjects[i], beatmap.HitObjects[i - 1], clockRate);
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var sortedObjects = beatmap.HitObjects.ToArray();
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LegacySortHelper<HitObject>.Sort(sortedObjects, Comparer<HitObject>.Create((a, b) => (int)Math.Round(a.StartTime) - (int)Math.Round(b.StartTime)));
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for (int i = 1; i < sortedObjects.Length; i++)
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yield return new ManiaDifficultyHitObject(sortedObjects[i], sortedObjects[i - 1], clockRate);
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}
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protected override Skill[] CreateSkills(IBeatmap beatmap)
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// Sorting is done in CreateDifficultyHitObjects, since the full list of hitobjects is required.
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protected override IEnumerable<DifficultyHitObject> SortObjects(IEnumerable<DifficultyHitObject> input) => input;
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protected override Skill[] CreateSkills(IBeatmap beatmap) => new Skill[]
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{
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int columnCount = ((ManiaBeatmap)beatmap).TotalColumns;
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var skills = new List<Skill> { new Overall(columnCount) };
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for (int i = 0; i < columnCount; i++)
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skills.Add(new Individual(i, columnCount));
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return skills.ToArray();
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}
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new Strain(((ManiaBeatmap)beatmap).TotalColumns)
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};
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protected override Mod[] DifficultyAdjustmentMods
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{
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@ -122,12 +96,73 @@ namespace osu.Game.Rulesets.Mania.Difficulty
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new ManiaModKey3(),
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new ManiaModKey4(),
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new ManiaModKey5(),
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new MultiMod(new ManiaModKey5(), new ManiaModDualStages()),
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new ManiaModKey6(),
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new MultiMod(new ManiaModKey6(), new ManiaModDualStages()),
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new ManiaModKey7(),
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new MultiMod(new ManiaModKey7(), new ManiaModDualStages()),
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new ManiaModKey8(),
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new MultiMod(new ManiaModKey8(), new ManiaModDualStages()),
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new ManiaModKey9(),
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new MultiMod(new ManiaModKey9(), new ManiaModDualStages()),
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}).ToArray();
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}
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}
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private int getHitWindow300(Mod[] mods)
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{
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if (isForCurrentRuleset)
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{
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double od = Math.Min(10.0, Math.Max(0, 10.0 - originalOverallDifficulty));
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return applyModAdjustments(34 + 3 * od, mods);
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}
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if (Math.Round(originalOverallDifficulty) > 4)
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return applyModAdjustments(34, mods);
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return applyModAdjustments(47, mods);
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static int applyModAdjustments(double value, Mod[] mods)
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{
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if (mods.Any(m => m is ManiaModHardRock))
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value /= 1.4;
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else if (mods.Any(m => m is ManiaModEasy))
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value *= 1.4;
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if (mods.Any(m => m is ManiaModDoubleTime))
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value *= 1.5;
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else if (mods.Any(m => m is ManiaModHalfTime))
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value *= 0.75;
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return (int)value;
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}
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}
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private double getScoreMultiplier(IBeatmap beatmap, Mod[] mods)
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{
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double scoreMultiplier = 1;
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foreach (var m in mods)
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{
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switch (m)
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{
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case ManiaModNoFail _:
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case ManiaModEasy _:
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case ManiaModHalfTime _:
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scoreMultiplier *= 0.5;
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break;
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}
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}
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var maniaBeatmap = (ManiaBeatmap)beatmap;
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int diff = maniaBeatmap.TotalColumns - maniaBeatmap.OriginalTotalColumns;
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if (diff > 0)
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scoreMultiplier *= 0.9;
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else if (diff < 0)
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scoreMultiplier *= 0.9 + 0.04 * diff;
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return scoreMultiplier;
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}
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}
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}
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@ -1,47 +0,0 @@
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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System.Linq;
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using osu.Game.Rulesets.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Difficulty.Skills;
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using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Objects;
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namespace osu.Game.Rulesets.Mania.Difficulty.Skills
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{
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public class Individual : Skill
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{
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protected override double SkillMultiplier => 1;
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protected override double StrainDecayBase => 0.125;
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private readonly double[] holdEndTimes;
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private readonly int column;
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public Individual(int column, int columnCount)
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{
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this.column = column;
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holdEndTimes = new double[columnCount];
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}
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protected override double StrainValueOf(DifficultyHitObject current)
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{
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var maniaCurrent = (ManiaDifficultyHitObject)current;
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var endTime = maniaCurrent.BaseObject.GetEndTime();
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try
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{
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if (maniaCurrent.BaseObject.Column != column)
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return 0;
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// We give a slight bonus if something is held meanwhile
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return holdEndTimes.Any(t => t > endTime) ? 2.5 : 2;
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}
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finally
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{
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holdEndTimes[maniaCurrent.BaseObject.Column] = endTime;
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}
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}
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}
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}
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@ -1,56 +0,0 @@
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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using osu.Game.Rulesets.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Difficulty.Skills;
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using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Objects;
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namespace osu.Game.Rulesets.Mania.Difficulty.Skills
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{
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public class Overall : Skill
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{
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protected override double SkillMultiplier => 1;
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protected override double StrainDecayBase => 0.3;
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private readonly double[] holdEndTimes;
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private readonly int columnCount;
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public Overall(int columnCount)
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{
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this.columnCount = columnCount;
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holdEndTimes = new double[columnCount];
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}
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protected override double StrainValueOf(DifficultyHitObject current)
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{
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var maniaCurrent = (ManiaDifficultyHitObject)current;
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var endTime = maniaCurrent.BaseObject.GetEndTime();
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double holdFactor = 1.0; // Factor in case something else is held
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double holdAddition = 0; // Addition to the current note in case it's a hold and has to be released awkwardly
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for (int i = 0; i < columnCount; i++)
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{
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// If there is at least one other overlapping end or note, then we get an addition, buuuuuut...
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if (current.BaseObject.StartTime < holdEndTimes[i] && endTime > holdEndTimes[i])
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holdAddition = 1.0;
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// ... this addition only is valid if there is _no_ other note with the same ending.
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// Releasing multiple notes at the same time is just as easy as releasing one
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if (endTime == holdEndTimes[i])
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holdAddition = 0;
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// We give a slight bonus if something is held meanwhile
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if (holdEndTimes[i] > endTime)
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holdFactor = 1.25;
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}
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holdEndTimes[maniaCurrent.BaseObject.Column] = endTime;
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return (1 + holdAddition) * holdFactor;
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}
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}
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}
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80
osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs
Normal file
80
osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs
Normal file
@ -0,0 +1,80 @@
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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using osu.Framework.Utils;
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using osu.Game.Rulesets.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Difficulty.Skills;
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using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Objects;
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namespace osu.Game.Rulesets.Mania.Difficulty.Skills
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{
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public class Strain : Skill
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{
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private const double individual_decay_base = 0.125;
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private const double overall_decay_base = 0.30;
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protected override double SkillMultiplier => 1;
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protected override double StrainDecayBase => 1;
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private readonly double[] holdEndTimes;
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private readonly double[] individualStrains;
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private double individualStrain;
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private double overallStrain;
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public Strain(int totalColumns)
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{
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holdEndTimes = new double[totalColumns];
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individualStrains = new double[totalColumns];
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overallStrain = 1;
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}
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protected override double StrainValueOf(DifficultyHitObject current)
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{
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var maniaCurrent = (ManiaDifficultyHitObject)current;
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var endTime = maniaCurrent.BaseObject.GetEndTime();
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var column = maniaCurrent.BaseObject.Column;
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double holdFactor = 1.0; // Factor to all additional strains in case something else is held
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double holdAddition = 0; // Addition to the current note in case it's a hold and has to be released awkwardly
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// Fill up the holdEndTimes array
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for (int i = 0; i < holdEndTimes.Length; ++i)
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{
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// If there is at least one other overlapping end or note, then we get an addition, buuuuuut...
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if (Precision.DefinitelyBigger(holdEndTimes[i], maniaCurrent.BaseObject.StartTime, 1) && Precision.DefinitelyBigger(endTime, holdEndTimes[i], 1))
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holdAddition = 1.0;
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// ... this addition only is valid if there is _no_ other note with the same ending. Releasing multiple notes at the same time is just as easy as releasing 1
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if (Precision.AlmostEquals(endTime, holdEndTimes[i], 1))
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holdAddition = 0;
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// We give a slight bonus to everything if something is held meanwhile
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if (Precision.DefinitelyBigger(holdEndTimes[i], endTime, 1))
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holdFactor = 1.25;
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// Decay individual strains
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individualStrains[i] = applyDecay(individualStrains[i], current.DeltaTime, individual_decay_base);
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}
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holdEndTimes[column] = endTime;
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// Increase individual strain in own column
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individualStrains[column] += 2.0 * holdFactor;
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individualStrain = individualStrains[column];
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overallStrain = applyDecay(overallStrain, current.DeltaTime, overall_decay_base) + (1 + holdAddition) * holdFactor;
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return individualStrain + overallStrain - CurrentStrain;
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}
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protected override double GetPeakStrain(double offset)
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=> applyDecay(individualStrain, offset - Previous[0].BaseObject.StartTime, individual_decay_base)
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+ applyDecay(overallStrain, offset - Previous[0].BaseObject.StartTime, overall_decay_base);
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private double applyDecay(double value, double deltaTime, double decayBase)
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=> value * Math.Pow(decayBase, deltaTime / 1000);
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}
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}
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165
osu.Game.Rulesets.Mania/MathUtils/LegacySortHelper.cs
Normal file
165
osu.Game.Rulesets.Mania/MathUtils/LegacySortHelper.cs
Normal file
@ -0,0 +1,165 @@
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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
|
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// See the LICENCE file in the repository root for full licence text.
|
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|
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.Contracts;
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||||
|
||||
namespace osu.Game.Rulesets.Mania.MathUtils
|
||||
{
|
||||
/// <summary>
|
||||
/// Provides access to .NET4.0 unstable sorting methods.
|
||||
/// </summary>
|
||||
/// <remarks>
|
||||
/// Source: https://referencesource.microsoft.com/#mscorlib/system/collections/generic/arraysorthelper.cs
|
||||
/// Copyright (c) Microsoft Corporation. All rights reserved.
|
||||
/// </remarks>
|
||||
internal static class LegacySortHelper<T>
|
||||
{
|
||||
private const int quick_sort_depth_threshold = 32;
|
||||
|
||||
public static void Sort(T[] keys, IComparer<T> comparer)
|
||||
{
|
||||
if (keys == null)
|
||||
throw new ArgumentNullException(nameof(keys));
|
||||
|
||||
if (keys.Length == 0)
|
||||
return;
|
||||
|
||||
comparer ??= Comparer<T>.Default;
|
||||
depthLimitedQuickSort(keys, 0, keys.Length - 1, comparer, quick_sort_depth_threshold);
|
||||
}
|
||||
|
||||
private static void depthLimitedQuickSort(T[] keys, int left, int right, IComparer<T> comparer, int depthLimit)
|
||||
{
|
||||
do
|
||||
{
|
||||
if (depthLimit == 0)
|
||||
{
|
||||
heapsort(keys, left, right, comparer);
|
||||
return;
|
||||
}
|
||||
|
||||
int i = left;
|
||||
int j = right;
|
||||
|
||||
// pre-sort the low, middle (pivot), and high values in place.
|
||||
// this improves performance in the face of already sorted data, or
|
||||
// data that is made up of multiple sorted runs appended together.
|
||||
int middle = i + ((j - i) >> 1);
|
||||
swapIfGreater(keys, comparer, i, middle); // swap the low with the mid point
|
||||
swapIfGreater(keys, comparer, i, j); // swap the low with the high
|
||||
swapIfGreater(keys, comparer, middle, j); // swap the middle with the high
|
||||
|
||||
T x = keys[middle];
|
||||
|
||||
do
|
||||
{
|
||||
while (comparer.Compare(keys[i], x) < 0) i++;
|
||||
while (comparer.Compare(x, keys[j]) < 0) j--;
|
||||
Contract.Assert(i >= left && j <= right, "(i>=left && j<=right) Sort failed - Is your IComparer bogus?");
|
||||
if (i > j) break;
|
||||
|
||||
if (i < j)
|
||||
{
|
||||
T key = keys[i];
|
||||
keys[i] = keys[j];
|
||||
keys[j] = key;
|
||||
}
|
||||
|
||||
i++;
|
||||
j--;
|
||||
} while (i <= j);
|
||||
|
||||
// The next iteration of the while loop is to "recursively" sort the larger half of the array and the
|
||||
// following calls recrusively sort the smaller half. So we subtrack one from depthLimit here so
|
||||
// both sorts see the new value.
|
||||
depthLimit--;
|
||||
|
||||
if (j - left <= right - i)
|
||||
{
|
||||
if (left < j) depthLimitedQuickSort(keys, left, j, comparer, depthLimit);
|
||||
left = i;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (i < right) depthLimitedQuickSort(keys, i, right, comparer, depthLimit);
|
||||
right = j;
|
||||
}
|
||||
} while (left < right);
|
||||
}
|
||||
|
||||
private static void heapsort(T[] keys, int lo, int hi, IComparer<T> comparer)
|
||||
{
|
||||
Contract.Requires(keys != null);
|
||||
Contract.Requires(comparer != null);
|
||||
Contract.Requires(lo >= 0);
|
||||
Contract.Requires(hi > lo);
|
||||
Contract.Requires(hi < keys.Length);
|
||||
|
||||
int n = hi - lo + 1;
|
||||
|
||||
for (int i = n / 2; i >= 1; i = i - 1)
|
||||
{
|
||||
downHeap(keys, i, n, lo, comparer);
|
||||
}
|
||||
|
||||
for (int i = n; i > 1; i = i - 1)
|
||||
{
|
||||
swap(keys, lo, lo + i - 1);
|
||||
downHeap(keys, 1, i - 1, lo, comparer);
|
||||
}
|
||||
}
|
||||
|
||||
private static void downHeap(T[] keys, int i, int n, int lo, IComparer<T> comparer)
|
||||
{
|
||||
Contract.Requires(keys != null);
|
||||
Contract.Requires(comparer != null);
|
||||
Contract.Requires(lo >= 0);
|
||||
Contract.Requires(lo < keys.Length);
|
||||
|
||||
T d = keys[lo + i - 1];
|
||||
|
||||
while (i <= n / 2)
|
||||
{
|
||||
var child = 2 * i;
|
||||
|
||||
if (child < n && comparer.Compare(keys[lo + child - 1], keys[lo + child]) < 0)
|
||||
{
|
||||
child++;
|
||||
}
|
||||
|
||||
if (!(comparer.Compare(d, keys[lo + child - 1]) < 0))
|
||||
break;
|
||||
|
||||
keys[lo + i - 1] = keys[lo + child - 1];
|
||||
i = child;
|
||||
}
|
||||
|
||||
keys[lo + i - 1] = d;
|
||||
}
|
||||
|
||||
private static void swap(T[] a, int i, int j)
|
||||
{
|
||||
if (i != j)
|
||||
{
|
||||
T t = a[i];
|
||||
a[i] = a[j];
|
||||
a[j] = t;
|
||||
}
|
||||
}
|
||||
|
||||
private static void swapIfGreater(T[] keys, IComparer<T> comparer, int a, int b)
|
||||
{
|
||||
if (a != b)
|
||||
{
|
||||
if (comparer.Compare(keys[a], keys[b]) > 0)
|
||||
{
|
||||
T key = keys[a];
|
||||
keys[a] = keys[b];
|
||||
keys[b] = key;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -69,7 +69,7 @@ namespace osu.Game.Rulesets.Difficulty
|
||||
if (!beatmap.HitObjects.Any())
|
||||
return CreateDifficultyAttributes(beatmap, mods, skills, clockRate);
|
||||
|
||||
var difficultyHitObjects = CreateDifficultyHitObjects(beatmap, clockRate).OrderBy(h => h.BaseObject.StartTime).ToList();
|
||||
var difficultyHitObjects = SortObjects(CreateDifficultyHitObjects(beatmap, clockRate)).ToList();
|
||||
|
||||
double sectionLength = SectionLength * clockRate;
|
||||
|
||||
@ -100,6 +100,14 @@ namespace osu.Game.Rulesets.Difficulty
|
||||
return CreateDifficultyAttributes(beatmap, mods, skills, clockRate);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Sorts a given set of <see cref="DifficultyHitObject"/>s.
|
||||
/// </summary>
|
||||
/// <param name="input">The <see cref="DifficultyHitObject"/>s to sort.</param>
|
||||
/// <returns>The sorted <see cref="DifficultyHitObject"/>s.</returns>
|
||||
protected virtual IEnumerable<DifficultyHitObject> SortObjects(IEnumerable<DifficultyHitObject> input)
|
||||
=> input.OrderBy(h => h.BaseObject.StartTime);
|
||||
|
||||
/// <summary>
|
||||
/// Creates all <see cref="Mod"/> combinations which adjust the <see cref="Beatmap"/> difficulty.
|
||||
/// </summary>
|
||||
|
||||
@ -41,7 +41,11 @@ namespace osu.Game.Rulesets.Difficulty.Skills
|
||||
/// </summary>
|
||||
protected readonly LimitedCapacityStack<DifficultyHitObject> Previous = new LimitedCapacityStack<DifficultyHitObject>(2); // Contained objects not used yet
|
||||
|
||||
private double currentStrain = 1; // We keep track of the strain level at all times throughout the beatmap.
|
||||
/// <summary>
|
||||
/// The current strain level.
|
||||
/// </summary>
|
||||
protected double CurrentStrain { get; private set; } = 1;
|
||||
|
||||
private double currentSectionPeak = 1; // We also keep track of the peak strain level in the current section.
|
||||
|
||||
private readonly List<double> strainPeaks = new List<double>();
|
||||
@ -51,10 +55,10 @@ namespace osu.Game.Rulesets.Difficulty.Skills
|
||||
/// </summary>
|
||||
public void Process(DifficultyHitObject current)
|
||||
{
|
||||
currentStrain *= strainDecay(current.DeltaTime);
|
||||
currentStrain += StrainValueOf(current) * SkillMultiplier;
|
||||
CurrentStrain *= strainDecay(current.DeltaTime);
|
||||
CurrentStrain += StrainValueOf(current) * SkillMultiplier;
|
||||
|
||||
currentSectionPeak = Math.Max(currentStrain, currentSectionPeak);
|
||||
currentSectionPeak = Math.Max(CurrentStrain, currentSectionPeak);
|
||||
|
||||
Previous.Push(current);
|
||||
}
|
||||
@ -71,15 +75,22 @@ namespace osu.Game.Rulesets.Difficulty.Skills
|
||||
/// <summary>
|
||||
/// Sets the initial strain level for a new section.
|
||||
/// </summary>
|
||||
/// <param name="offset">The beginning of the new section in milliseconds.</param>
|
||||
public void StartNewSectionFrom(double offset)
|
||||
/// <param name="time">The beginning of the new section in milliseconds.</param>
|
||||
public void StartNewSectionFrom(double time)
|
||||
{
|
||||
// The maximum strain of the new section is not zero by default, strain decays as usual regardless of section boundaries.
|
||||
// This means we need to capture the strain level at the beginning of the new section, and use that as the initial peak level.
|
||||
if (Previous.Count > 0)
|
||||
currentSectionPeak = currentStrain * strainDecay(offset - Previous[0].BaseObject.StartTime);
|
||||
currentSectionPeak = GetPeakStrain(time);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Retrieves the peak strain at a point in time.
|
||||
/// </summary>
|
||||
/// <param name="time">The time to retrieve the peak strain at.</param>
|
||||
/// <returns>The peak strain.</returns>
|
||||
protected virtual double GetPeakStrain(double time) => CurrentStrain * strainDecay(time - Previous[0].BaseObject.StartTime);
|
||||
|
||||
/// <summary>
|
||||
/// Returns the calculated difficulty value representing all processed <see cref="DifficultyHitObject"/>s.
|
||||
/// </summary>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user