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osu-lazer/osu.Game.Rulesets.Taiko/Audio/DrumSampleContainer.cs
2020-11-04 15:29:14 +09:00

105 lines
3.6 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.
using System.Collections.Generic;
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Audio;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Skinning;
namespace osu.Game.Rulesets.Taiko.Audio
{
/// <summary>
/// Stores samples for the input drum.
/// The lifetime of the samples is adjusted so that they are only alive during the appropriate sample control point.
/// </summary>
public class DrumSampleContainer : LifetimeManagementContainer
{
private readonly ControlPointInfo controlPoints;
private readonly Dictionary<double, DrumSample> mappings = new Dictionary<double, DrumSample>();
private readonly IBindableList<SampleControlPoint> samplePoints = new BindableList<SampleControlPoint>();
public DrumSampleContainer(ControlPointInfo controlPoints)
{
this.controlPoints = controlPoints;
}
[BackgroundDependencyLoader]
private void load()
{
samplePoints.BindTo(controlPoints.SamplePoints);
samplePoints.BindCollectionChanged((_, __) => recreateMappings(), true);
}
private void recreateMappings()
{
mappings.Clear();
ClearInternal();
SampleControlPoint[] points = samplePoints.Count == 0
? new[] { controlPoints.SamplePointAt(double.MinValue) }
: samplePoints.ToArray();
for (int i = 0; i < points.Length; i++)
{
var samplePoint = points[i];
var lifetimeStart = i > 0 ? samplePoint.Time : double.MinValue;
var lifetimeEnd = i + 1 < points.Length ? points[i + 1].Time : double.MaxValue;
AddInternal(mappings[samplePoint.Time] = new DrumSample(samplePoint)
{
LifetimeStart = lifetimeStart,
LifetimeEnd = lifetimeEnd
});
}
}
public DrumSample SampleAt(double time) => mappings[controlPoints.SamplePointAt(time).Time];
public class DrumSample : CompositeDrawable
{
public override bool RemoveWhenNotAlive => false;
public PausableSkinnableSound Centre { get; private set; }
public PausableSkinnableSound Rim { get; private set; }
private readonly SampleControlPoint samplePoint;
private Bindable<string> sampleBank;
private BindableNumber<int> sampleVolume;
public DrumSample(SampleControlPoint samplePoint)
{
this.samplePoint = samplePoint;
}
[BackgroundDependencyLoader]
private void load()
{
sampleBank = samplePoint.SampleBankBindable.GetBoundCopy();
sampleBank.BindValueChanged(_ => recreate());
sampleVolume = samplePoint.SampleVolumeBindable.GetBoundCopy();
sampleVolume.BindValueChanged(_ => recreate());
recreate();
}
private void recreate()
{
InternalChildren = new Drawable[]
{
Centre = new PausableSkinnableSound(samplePoint.GetSampleInfo()),
Rim = new PausableSkinnableSound(samplePoint.GetSampleInfo(HitSampleInfo.HIT_CLAP))
};
}
}
}
}