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https://github.com/ppy/osu
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54 lines
1.8 KiB
C#
54 lines
1.8 KiB
C#
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// 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.Track;
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using osu.Framework.Graphics;
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using osu.Game.Audio;
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using osu.Game.Beatmaps.ControlPoints;
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using osu.Game.Graphics.Containers;
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using osu.Game.Skinning;
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namespace osu.Game.Rulesets.Mods
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{
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public class MetronomeBeatContainer : BeatSyncedContainer
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{
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private readonly double firstHitTime;
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private PausableSkinnableSound sample;
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/// <param name="firstHitTime">Start time of the first hit object, used for providing a count down.</param>
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public MetronomeBeatContainer(double firstHitTime)
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{
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this.firstHitTime = firstHitTime;
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AllowMistimedEventFiring = false;
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Divisor = 1;
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}
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[BackgroundDependencyLoader]
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private void load()
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{
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InternalChildren = new Drawable[]
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{
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sample = new PausableSkinnableSound(new SampleInfo("Gameplay/catch-banana"))
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};
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}
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protected override void OnNewBeat(int beatIndex, TimingControlPoint timingPoint, EffectControlPoint effectPoint, ChannelAmplitudes amplitudes)
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{
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base.OnNewBeat(beatIndex, timingPoint, effectPoint, amplitudes);
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if (!IsBeatSyncedWithTrack) return;
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int timeSignature = (int)timingPoint.TimeSignature;
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// play metronome from one measure before the first object.
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if (BeatSyncClock.CurrentTime < firstHitTime - timingPoint.BeatLength * timeSignature)
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return;
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sample.Frequency.Value = beatIndex % timeSignature == 0 ? 1 : 0.5f;
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sample.Play();
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}
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}
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}
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