mirror of
https://github.com/ppy/osu
synced 2024-12-14 19:06:07 +00:00
80 lines
2.7 KiB
C#
80 lines
2.7 KiB
C#
// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using System.Collections.Generic;
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using osu.Game.Beatmaps;
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using osu.Game.Rulesets.Mods;
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using osu.Game.Rulesets.Osu.Beatmaps;
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using osu.Game.Rulesets.Osu.Objects;
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using osu.Game.Rulesets.Osu.OsuDifficulty.Preprocessing;
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using osu.Game.Rulesets.Osu.OsuDifficulty.Skills;
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namespace osu.Game.Rulesets.Osu.OsuDifficulty
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{
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public class OsuDifficultyCalculator : DifficultyCalculator<OsuHitObject>
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{
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private const int section_length = 400;
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private const double difficulty_multiplier = 0.0675;
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public OsuDifficultyCalculator(Beatmap beatmap)
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: base(beatmap)
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{
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}
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public OsuDifficultyCalculator(Beatmap beatmap, Mod[] mods)
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: base(beatmap, mods)
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{
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}
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protected override void PreprocessHitObjects()
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{
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foreach (OsuHitObject h in Beatmap.HitObjects)
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(h as Slider)?.Curve?.Calculate();
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}
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public override double Calculate(Dictionary<string, string> categoryDifficulty = null)
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{
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OsuDifficultyBeatmap beatmap = new OsuDifficultyBeatmap(Beatmap.HitObjects);
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Skill[] skills =
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{
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new Aim(),
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new Speed()
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};
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double sectionEnd = section_length / TimeRate;
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foreach (OsuDifficultyHitObject h in beatmap)
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{
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while (h.BaseObject.StartTime > sectionEnd)
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{
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foreach (Skill s in skills)
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{
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s.SaveCurrentPeak();
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s.StartNewSectionFrom(sectionEnd);
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}
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sectionEnd += section_length;
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}
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foreach (Skill s in skills)
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s.Process(h);
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}
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double aimRating = Math.Sqrt(skills[0].DifficultyValue()) * difficulty_multiplier;
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double speedRating = Math.Sqrt(skills[1].DifficultyValue()) * difficulty_multiplier;
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double starRating = aimRating + speedRating + Math.Abs(aimRating - speedRating) / 2;
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if (categoryDifficulty != null)
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{
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categoryDifficulty.Add("Aim", aimRating.ToString("0.00"));
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categoryDifficulty.Add("Speed", speedRating.ToString("0.00"));
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}
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return starRating;
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}
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protected override BeatmapConverter<OsuHitObject> CreateBeatmapConverter(Beatmap beatmap) => new OsuBeatmapConverter();
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}
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}
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