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osu-lazer/osu.Game.Rulesets.Osu/Objects/Spinner.cs
2022-06-17 16:37:17 +09:00

99 lines
3.3 KiB
C#

// 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.
#nullable disable
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Rulesets.Judgements;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Rulesets.Osu.Judgements;
using osu.Game.Rulesets.Scoring;
using osuTK;
namespace osu.Game.Rulesets.Osu.Objects
{
public class Spinner : OsuHitObject, IHasDuration
{
public double EndTime
{
get => StartTime + Duration;
set => Duration = value - StartTime;
}
public double Duration { get; set; }
/// <summary>
/// Number of spins required to finish the spinner without miss.
/// </summary>
public int SpinsRequired { get; protected set; } = 1;
/// <summary>
/// Number of spins available to give bonus, beyond <see cref="SpinsRequired"/>.
/// </summary>
public int MaximumBonusSpins { get; protected set; } = 1;
public override Vector2 StackOffset => Vector2.Zero;
protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, IBeatmapDifficultyInfo difficulty)
{
base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
// spinning doesn't match 1:1 with stable, so let's fudge them easier for the time being.
const double stable_matching_fudge = 0.6;
// close to 477rpm
const double maximum_rotations_per_second = 8;
double secondsDuration = Duration / 1000;
double minimumRotationsPerSecond = stable_matching_fudge * IBeatmapDifficultyInfo.DifficultyRange(difficulty.OverallDifficulty, 3, 5, 7.5);
SpinsRequired = (int)(secondsDuration * minimumRotationsPerSecond);
MaximumBonusSpins = (int)((maximum_rotations_per_second - minimumRotationsPerSecond) * secondsDuration);
}
protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
{
base.CreateNestedHitObjects(cancellationToken);
int totalSpins = MaximumBonusSpins + SpinsRequired;
for (int i = 0; i < totalSpins; i++)
{
cancellationToken.ThrowIfCancellationRequested();
double startTime = StartTime + (float)(i + 1) / totalSpins * Duration;
AddNested(i < SpinsRequired
? new SpinnerTick { StartTime = startTime }
: new SpinnerBonusTick { StartTime = startTime });
}
}
public override Judgement CreateJudgement() => new OsuJudgement();
protected override HitWindows CreateHitWindows() => HitWindows.Empty;
public override IList<HitSampleInfo> AuxiliarySamples => CreateSpinningSamples();
public HitSampleInfo[] CreateSpinningSamples()
{
var referenceSample = Samples.FirstOrDefault();
if (referenceSample == null)
return Array.Empty<HitSampleInfo>();
return new[]
{
SampleControlPoint.ApplyTo(referenceSample).With("spinnerspin")
};
}
}
}