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osu-lazer/osu.Game/Beatmaps/ControlPoints/TimingControlPoint.cs

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// 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.
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using osu.Framework.Bindables;
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using osu.Game.Beatmaps.Timing;
using osu.Game.Graphics;
using osuTK.Graphics;
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namespace osu.Game.Beatmaps.ControlPoints
{
public class TimingControlPoint : ControlPoint
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{
/// <summary>
/// The time signature at this control point.
/// </summary>
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public readonly Bindable<TimeSignatures> TimeSignatureBindable = new Bindable<TimeSignatures>(TimeSignatures.SimpleQuadruple) { Default = TimeSignatures.SimpleQuadruple };
/// <summary>
/// Default length of a beat in milliseconds. Used whenever there is no beatmap or track playing.
/// </summary>
private const double default_beat_length = 60000.0 / 60.0;
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public override Color4 GetRepresentingColour(OsuColour colours) => colours.Orange1;
public static readonly TimingControlPoint DEFAULT = new TimingControlPoint
{
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BeatLengthBindable =
{
Value = default_beat_length,
Disabled = true
},
TimeSignatureBindable = { Disabled = true }
};
/// <summary>
/// The time signature at this control point.
/// </summary>
public TimeSignatures TimeSignature
{
get => TimeSignatureBindable.Value;
set => TimeSignatureBindable.Value = value;
}
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public const double DEFAULT_BEAT_LENGTH = 1000;
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/// <summary>
/// The beat length at this control point.
/// </summary>
public readonly BindableDouble BeatLengthBindable = new BindableDouble(DEFAULT_BEAT_LENGTH)
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{
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Default = DEFAULT_BEAT_LENGTH,
MinValue = 6,
MaxValue = 60000
};
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/// <summary>
/// The beat length at this control point.
/// </summary>
public double BeatLength
{
get => BeatLengthBindable.Value;
set => BeatLengthBindable.Value = value;
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}
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/// <summary>
/// The BPM at this control point.
/// </summary>
public double BPM => 60000 / BeatLength;
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// Timing points are never redundant as they can change the time signature.
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public override bool IsRedundant(ControlPoint existing) => false;
public override void CopyFrom(ControlPoint other)
{
TimeSignature = ((TimingControlPoint)other).TimeSignature;
BeatLength = ((TimingControlPoint)other).BeatLength;
base.CopyFrom(other);
}
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}
}