mirror of https://github.com/ppy/osu
75 lines
2.8 KiB
C#
75 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 osu.Framework.Allocation;
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using osu.Framework.Audio.Sample;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
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using osu.Game.Beatmaps;
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namespace osu.Game.Storyboards.Drawables
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{
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public class DrawableStoryboardSample : Component
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{
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/// <summary>
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/// The amount of time allowable beyond the start time of the sample, for the sample to start.
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/// </summary>
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private const double allowable_late_start = 100;
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private readonly StoryboardSampleInfo sampleInfo;
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private SampleChannel channel;
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public override bool RemoveWhenNotAlive => false;
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public DrawableStoryboardSample(StoryboardSampleInfo sampleInfo)
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{
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this.sampleInfo = sampleInfo;
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LifetimeStart = sampleInfo.StartTime;
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}
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[BackgroundDependencyLoader]
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private void load(IBindable<WorkingBeatmap> beatmap)
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{
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channel = beatmap.Value.Skin.GetSample(sampleInfo);
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if (channel != null)
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channel.Volume.Value = sampleInfo.Volume / 100.0;
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}
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protected override void Update()
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{
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base.Update();
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// TODO: this logic will need to be consolidated with other game samples like hit sounds.
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if (Time.Current < sampleInfo.StartTime)
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{
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// We've rewound before the start time of the sample
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channel?.Stop();
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// In the case that the user fast-forwards to a point far beyond the start time of the sample,
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// we want to be able to fall into the if-conditional below (therefore we must not have a life time end)
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LifetimeStart = sampleInfo.StartTime;
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LifetimeEnd = double.MaxValue;
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}
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else if (Time.Current - Time.Elapsed < sampleInfo.StartTime)
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{
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// We've passed the start time of the sample. We only play the sample if we're within an allowable range
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// from the sample's start, to reduce layering if we've been fast-forwarded far into the future
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if (Time.Current - sampleInfo.StartTime < allowable_late_start)
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channel?.Play();
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// In the case that the user rewinds to a point far behind the start time of the sample,
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// we want to be able to fall into the if-conditional above (therefore we must not have a life time start)
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LifetimeStart = double.MinValue;
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LifetimeEnd = sampleInfo.StartTime;
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}
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}
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protected override void Dispose(bool isDisposing)
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{
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channel?.Stop();
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base.Dispose(isDisposing);
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}
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}
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}
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