mirror of https://github.com/ppy/osu
117 lines
4.0 KiB
C#
117 lines
4.0 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 System;
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using osu.Framework.Bindables;
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using osu.Game.Beatmaps.Timing;
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using osu.Game.Graphics;
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using osuTK.Graphics;
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namespace osu.Game.Beatmaps.ControlPoints
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{
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public class TimingControlPoint : ControlPoint, IEquatable<TimingControlPoint>
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{
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/// <summary>
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/// The time signature at this control point.
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/// </summary>
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public readonly Bindable<TimeSignature> TimeSignatureBindable = new Bindable<TimeSignature>(TimeSignature.SimpleQuadruple);
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/// <summary>
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/// Whether the first bar line of this control point is ignored.
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/// </summary>
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public readonly BindableBool OmitFirstBarLineBindable = new BindableBool();
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/// <summary>
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/// Default length of a beat in milliseconds. Used whenever there is no beatmap or track playing.
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/// </summary>
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private const double default_beat_length = 60000.0 / 60.0;
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public override Color4 GetRepresentingColour(OsuColour colours) => colours.Red2;
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public static readonly TimingControlPoint DEFAULT = new TimingControlPoint
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{
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BeatLengthBindable =
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{
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Value = default_beat_length,
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Disabled = true
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},
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OmitFirstBarLineBindable = { Disabled = true },
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TimeSignatureBindable = { Disabled = true }
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};
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/// <summary>
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/// The time signature at this control point.
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/// </summary>
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public TimeSignature TimeSignature
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{
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get => TimeSignatureBindable.Value;
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set => TimeSignatureBindable.Value = value;
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}
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/// <summary>
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/// Whether the first bar line of this control point is ignored.
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/// </summary>
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public bool OmitFirstBarLine
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{
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get => OmitFirstBarLineBindable.Value;
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set => OmitFirstBarLineBindable.Value = value;
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}
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public const double DEFAULT_BEAT_LENGTH = 1000;
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/// <summary>
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/// The beat length at this control point.
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/// </summary>
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public readonly BindableDouble BeatLengthBindable = new BindableDouble(DEFAULT_BEAT_LENGTH)
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{
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MinValue = 6,
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MaxValue = 60000
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};
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/// <summary>
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/// The beat length at this control point.
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/// </summary>
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public double BeatLength
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{
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get => BeatLengthBindable.Value;
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set => BeatLengthBindable.Value = value;
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}
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/// <summary>
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/// The BPM at this control point.
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/// </summary>
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public double BPM => 60000 / BeatLength;
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public TimingControlPoint()
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{
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TimeSignatureBindable.BindValueChanged(_ => RaiseChanged());
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OmitFirstBarLineBindable.BindValueChanged(_ => RaiseChanged());
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BeatLengthBindable.BindValueChanged(_ => RaiseChanged());
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}
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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;
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public override void CopyFrom(ControlPoint other)
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{
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TimeSignature = ((TimingControlPoint)other).TimeSignature;
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OmitFirstBarLine = ((TimingControlPoint)other).OmitFirstBarLine;
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BeatLength = ((TimingControlPoint)other).BeatLength;
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base.CopyFrom(other);
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}
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public override bool Equals(ControlPoint? other)
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=> other is TimingControlPoint otherTimingControlPoint
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&& Equals(otherTimingControlPoint);
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public bool Equals(TimingControlPoint? other)
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=> base.Equals(other)
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&& TimeSignature.Equals(other.TimeSignature)
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&& OmitFirstBarLine == other.OmitFirstBarLine
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&& BeatLength.Equals(other.BeatLength);
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public override int GetHashCode() => HashCode.Combine(base.GetHashCode(), TimeSignature, BeatLength, OmitFirstBarLine);
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}
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}
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