mirror of https://github.com/ppy/osu
79 lines
2.8 KiB
C#
79 lines
2.8 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;
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using System.Linq;
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using osu.Game.Beatmaps;
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using osu.Game.Rulesets.Judgements;
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using osu.Game.Rulesets.Scoring;
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using osu.Game.Rulesets.Taiko.Objects;
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namespace osu.Game.Rulesets.Taiko.Scoring
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{
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/// <summary>
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/// A <see cref="HealthProcessor"/> for the taiko ruleset.
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/// Taiko fails if the player has not half-filled their health by the end of the map.
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/// </summary>
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public partial class TaikoHealthProcessor : AccumulatingHealthProcessor
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{
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/// <summary>
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/// A value used for calculating <see cref="hpMultiplier"/>.
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/// </summary>
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private const double object_count_factor = 3;
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/// <summary>
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/// HP multiplier for a successful <see cref="HitResult"/>.
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/// </summary>
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private double hpMultiplier;
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/// <summary>
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/// HP multiplier for a <see cref="HitResult"/> that does not satisfy <see cref="HitResultExtensions.IsHit"/>.
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/// </summary>
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private double hpMissMultiplier;
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/// <summary>
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/// Sum of all achievable health increases throughout the map.
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/// Used to determine if there are any objects that give health.
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/// If there are none, health will be forcibly pulled up to 1 to avoid cases of impassable maps.
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/// </summary>
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private double sumOfMaxHealthIncreases;
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public TaikoHealthProcessor()
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: base(0.5)
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{
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}
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protected override void ApplyResultInternal(JudgementResult result)
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{
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base.ApplyResultInternal(result);
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sumOfMaxHealthIncreases += result.Judgement.MaxHealthIncrease;
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}
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protected override void RevertResultInternal(JudgementResult result)
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{
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base.RevertResultInternal(result);
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sumOfMaxHealthIncreases -= result.Judgement.MaxHealthIncrease;
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}
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protected override void Reset(bool storeResults)
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{
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base.Reset(storeResults);
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if (storeResults && sumOfMaxHealthIncreases == 0)
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Health.Value = 1;
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sumOfMaxHealthIncreases = 0;
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}
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public override void ApplyBeatmap(IBeatmap beatmap)
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{
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base.ApplyBeatmap(beatmap);
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hpMultiplier = 1 / (object_count_factor * Math.Max(1, beatmap.HitObjects.OfType<Hit>().Count()) * IBeatmapDifficultyInfo.DifficultyRange(beatmap.Difficulty.DrainRate, 0.5, 0.75, 0.98));
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hpMissMultiplier = IBeatmapDifficultyInfo.DifficultyRange(beatmap.Difficulty.DrainRate, 0.0018, 0.0075, 0.0120);
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}
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protected override double GetHealthIncreaseFor(JudgementResult result)
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=> base.GetHealthIncreaseFor(result) * (result.IsHit ? hpMultiplier : hpMissMultiplier);
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}
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}
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