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

82 lines
2.6 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 osu.Framework.Bindables;
using osu.Game.Beatmaps.Timing;
using osu.Game.Graphics;
using osuTK.Graphics;
namespace osu.Game.Beatmaps.ControlPoints
{
public class TimingControlPoint : ControlPoint
{
/// <summary>
/// The time signature at this control point.
/// </summary>
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;
public override Color4 GetRepresentingColour(OsuColour colours) => colours.YellowDark;
public static readonly TimingControlPoint DEFAULT = new TimingControlPoint
{
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;
}
public const double DEFAULT_BEAT_LENGTH = 1000;
/// <summary>
/// The beat length at this control point.
/// </summary>
public readonly BindableDouble BeatLengthBindable = new BindableDouble(DEFAULT_BEAT_LENGTH)
{
Default = DEFAULT_BEAT_LENGTH,
MinValue = 6,
MaxValue = 60000
};
/// <summary>
/// The beat length at this control point.
/// </summary>
public double BeatLength
{
get => BeatLengthBindable.Value;
set => BeatLengthBindable.Value = value;
}
/// <summary>
/// The BPM at this control point.
/// </summary>
public double BPM => 60000 / BeatLength;
// Timing points are never redundant as they can change the time signature.
public override bool IsRedundant(ControlPoint existing) => false;
public override void CopyFrom(ControlPoint other)
{
TimeSignature = ((TimingControlPoint)other).TimeSignature;
BeatLength = ((TimingControlPoint)other).BeatLength;
base.CopyFrom(other);
}
}
}