mirror of https://github.com/ppy/osu
59 lines
2.3 KiB
C#
59 lines
2.3 KiB
C#
// 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.Collections.Generic;
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using System.Linq;
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using osu.Game.Beatmaps;
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using osu.Game.Rulesets.Difficulty;
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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.Mods;
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using osu.Game.Rulesets.Taiko.Difficulty.Preprocessing;
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using osu.Game.Rulesets.Taiko.Difficulty.Skills;
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using osu.Game.Rulesets.Taiko.Mods;
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using osu.Game.Rulesets.Taiko.Objects;
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namespace osu.Game.Rulesets.Taiko.Difficulty
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{
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public class TaikoDifficultyCalculator : DifficultyCalculator
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{
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private const double star_scaling_factor = 0.04125;
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public TaikoDifficultyCalculator(Ruleset ruleset, WorkingBeatmap beatmap)
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: base(ruleset, beatmap)
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{
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}
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protected override DifficultyAttributes CreateDifficultyAttributes(IBeatmap beatmap, Mod[] mods, Skill[] skills, double clockRate)
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{
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if (beatmap.HitObjects.Count == 0)
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return new TaikoDifficultyAttributes { Mods = mods };
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return new TaikoDifficultyAttributes
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{
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StarRating = skills.Single().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)(beatmap.HitObjects.First().HitWindows.Great / 2) / clockRate,
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MaxCombo = beatmap.HitObjects.Count(h => h is Hit),
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};
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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 TaikoDifficultyHitObject(beatmap.HitObjects[i], beatmap.HitObjects[i - 1], clockRate);
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}
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protected override Skill[] CreateSkills(IBeatmap beatmap) => new Skill[] { new Strain() };
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protected override Mod[] DifficultyAdjustmentMods => new Mod[]
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{
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new TaikoModDoubleTime(),
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new TaikoModHalfTime(),
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new TaikoModEasy(),
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new TaikoModHardRock(),
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};
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}
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}
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