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osu-lazer/osu.Game/Rulesets/Difficulty/PerformanceCalculator.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
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using System.Collections.Generic;
using System.Linq;
using osu.Framework.Extensions.IEnumerableExtensions;
using osu.Framework.Timing;
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using osu.Game.Beatmaps;
using osu.Game.Rulesets.Mods;
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using osu.Game.Scoring;
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namespace osu.Game.Rulesets.Difficulty
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{
public abstract class PerformanceCalculator
{
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protected readonly DifficultyAttributes Attributes;
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protected readonly Ruleset Ruleset;
protected readonly IBeatmap Beatmap;
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protected readonly ScoreInfo Score;
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protected double TimeRate { get; private set; } = 1;
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protected PerformanceCalculator(Ruleset ruleset, WorkingBeatmap beatmap, ScoreInfo score)
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{
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Ruleset = ruleset;
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Score = score;
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Beatmap = beatmap.GetPlayableBeatmap(ruleset.RulesetInfo, score.Mods);
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Attributes = ruleset.CreateDifficultyCalculator(beatmap).Calculate(score.Mods);
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ApplyMods(score.Mods);
}
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protected virtual void ApplyMods(Mod[] mods)
{
var clock = new StopwatchClock();
mods.OfType<IApplicableToClock>().ForEach(m => m.ApplyToClock(clock));
TimeRate = clock.Rate;
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}
public abstract double Calculate(Dictionary<string, double> categoryDifficulty = null);
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}
}