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268 lines
13 KiB
C#
268 lines
13 KiB
C#
// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using OpenTK.Input;
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using osu.Framework.Configuration;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Transforms;
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using osu.Framework.Input;
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using osu.Framework.MathUtils;
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using osu.Game.Rulesets.Judgements;
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using osu.Game.Rulesets.Objects;
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using osu.Game.Rulesets.Objects.Drawables;
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using osu.Game.Rulesets.Timing;
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namespace osu.Game.Rulesets.UI
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{
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/// <summary>
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/// A type of <see cref="Playfield{TObject, TJudgement}"/> specialized towards scrolling <see cref="DrawableHitObject"/>s.
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/// </summary>
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public class ScrollingPlayfield<TObject, TJudgement> : Playfield<TObject, TJudgement>
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where TObject : HitObject
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where TJudgement : Judgement
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{
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/// <summary>
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/// The default span of time visible by the length of the scrolling axes.
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/// This is clamped between <see cref="time_span_min"/> and <see cref="time_span_max"/>.
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/// </summary>
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private const double time_span_default = 1500;
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/// <summary>
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/// The minimum span of time that may be visible by the length of the scrolling axes.
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/// </summary>
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private const double time_span_min = 50;
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/// <summary>
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/// The maximum span of time that may be visible by the length of the scrolling axes.
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/// </summary>
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private const double time_span_max = 10000;
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/// <summary>
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/// The step increase/decrease of the span of time visible by the length of the scrolling axes.
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/// </summary>
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private const double time_span_step = 50;
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/// <summary>
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/// The span of time that is visible by the length of the scrolling axes.
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/// For example, only hit objects with start time less than or equal to 1000 will be visible with <see cref="VisibleTimeRange"/> = 1000.
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/// </summary>
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public readonly BindableDouble VisibleTimeRange = new BindableDouble(time_span_default)
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{
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Default = time_span_default,
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MinValue = time_span_min,
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MaxValue = time_span_max
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};
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/// <summary>
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/// Whether to reverse the scrolling direction is reversed.
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/// </summary>
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public readonly BindableBool Reversed = new BindableBool();
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/// <summary>
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/// The container that contains the <see cref="SpeedAdjustmentContainer"/>s and <see cref="DrawableHitObject"/>s.
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/// </summary>
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public new readonly ScrollingHitObjectContainer HitObjects;
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/// <summary>
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/// Creates a new <see cref="ScrollingPlayfield{TObject, TJudgement}"/>.
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/// </summary>
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/// <param name="scrollingAxes">The axes on which <see cref="DrawableHitObject"/>s in this container should scroll.</param>
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/// <param name="customWidth">Whether we want our internal coordinate system to be scaled to a specified width</param>
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protected ScrollingPlayfield(Axes scrollingAxes, float? customWidth = null)
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: base(customWidth)
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{
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base.HitObjects = HitObjects = new ScrollingHitObjectContainer(scrollingAxes) { RelativeSizeAxes = Axes.Both };
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HitObjects.VisibleTimeRange.BindTo(VisibleTimeRange);
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HitObjects.Reversed.BindTo(Reversed);
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}
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private List<ScrollingPlayfield<TObject, TJudgement>> nestedPlayfields;
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/// <summary>
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/// All the <see cref="ScrollingPlayfield{TObject, TJudgement}"/>s nested inside this playfield.
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/// </summary>
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public IEnumerable<ScrollingPlayfield<TObject, TJudgement>> NestedPlayfields => nestedPlayfields;
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/// <summary>
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/// Adds a <see cref="ScrollingPlayfield{TObject, TJudgement}"/> to this playfield. The nested <see cref="ScrollingPlayfield{TObject, TJudgement}"/>
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/// will be given all of the same speed adjustments as this playfield.
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/// </summary>
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/// <param name="otherPlayfield">The <see cref="ScrollingPlayfield{TObject, TJudgement}"/> to add.</param>
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protected void AddNested(ScrollingPlayfield<TObject, TJudgement> otherPlayfield)
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{
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if (nestedPlayfields == null)
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nestedPlayfields = new List<ScrollingPlayfield<TObject, TJudgement>>();
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nestedPlayfields.Add(otherPlayfield);
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}
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protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
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{
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if (state.Keyboard.ControlPressed)
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{
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switch (args.Key)
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{
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case Key.Minus:
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transformVisibleTimeRangeTo(VisibleTimeRange + time_span_step, 200, Easing.OutQuint);
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break;
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case Key.Plus:
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transformVisibleTimeRangeTo(VisibleTimeRange - time_span_step, 200, Easing.OutQuint);
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break;
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}
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}
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return false;
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}
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private void transformVisibleTimeRangeTo(double newTimeRange, double duration = 0, Easing easing = Easing.None)
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{
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this.TransformTo(this.PopulateTransform(new TransformVisibleTimeRange(), newTimeRange, duration, easing));
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}
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private class TransformVisibleTimeRange : Transform<double, ScrollingPlayfield<TObject, TJudgement>>
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{
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private double valueAt(double time)
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{
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if (time < StartTime) return StartValue;
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if (time >= EndTime) return EndValue;
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return Interpolation.ValueAt(time, StartValue, EndValue, StartTime, EndTime, Easing);
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}
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public override string TargetMember => "VisibleTimeRange.Value";
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protected override void Apply(ScrollingPlayfield<TObject, TJudgement> d, double time) => d.VisibleTimeRange.Value = valueAt(time);
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protected override void ReadIntoStartValue(ScrollingPlayfield<TObject, TJudgement> d) => StartValue = d.VisibleTimeRange.Value;
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}
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/// <summary>
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/// A container that provides the foundation for sorting <see cref="DrawableHitObject"/>s into <see cref="SpeedAdjustmentContainer"/>s.
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/// </summary>
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public class ScrollingHitObjectContainer : HitObjectContainer
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{
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/// <summary>
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/// Gets or sets the range of time that is visible by the length of the scrolling axes.
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/// For example, only hit objects with start time less than or equal to 1000 will be visible with <see cref="VisibleTimeRange"/> = 1000.
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/// </summary>
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public readonly BindableDouble VisibleTimeRange = new BindableDouble { Default = 1000 };
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/// <summary>
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/// Whether to reverse the scrolling direction is reversed.
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/// </summary>
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public readonly BindableBool Reversed = new BindableBool();
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private readonly SortedContainer speedAdjustments;
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public IReadOnlyList<SpeedAdjustmentContainer> SpeedAdjustments => speedAdjustments;
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private readonly SpeedAdjustmentContainer defaultSpeedAdjustment;
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private readonly Axes scrollingAxes;
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/// <summary>
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/// Creates a new <see cref="ScrollingHitObjectContainer"/>.
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/// </summary>
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/// <param name="scrollingAxes">The axes upon which hit objects should appear to scroll inside this container.</param>
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public ScrollingHitObjectContainer(Axes scrollingAxes)
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{
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this.scrollingAxes = scrollingAxes;
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AddInternal(speedAdjustments = new SortedContainer { RelativeSizeAxes = Axes.Both });
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// Default speed adjustment
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AddSpeedAdjustment(defaultSpeedAdjustment = new SpeedAdjustmentContainer(new MultiplierControlPoint(0)));
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}
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/// <summary>
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/// Adds a <see cref="SpeedAdjustmentContainer"/> to this container.
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/// </summary>
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/// <param name="speedAdjustment">The <see cref="SpeedAdjustmentContainer"/>.</param>
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public void AddSpeedAdjustment(SpeedAdjustmentContainer speedAdjustment)
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{
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speedAdjustment.ScrollingAxes = scrollingAxes;
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speedAdjustment.VisibleTimeRange.BindTo(VisibleTimeRange);
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speedAdjustment.Reversed.BindTo(Reversed);
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if (speedAdjustments.Count > 0)
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{
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var existingAdjustment = adjustmentContainerAt(speedAdjustment.ControlPoint.StartTime);
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for (int i = 0; i < existingAdjustment.Count; i++)
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{
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DrawableHitObject hitObject = existingAdjustment[i];
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if (!speedAdjustment.CanContain(hitObject.HitObject.StartTime))
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continue;
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existingAdjustment.Remove(hitObject);
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speedAdjustment.Add(hitObject);
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i--;
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}
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}
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speedAdjustments.Add(speedAdjustment);
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}
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/// <summary>
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/// Removes a <see cref="SpeedAdjustmentContainer"/> from this container, re-sorting all hit objects
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/// which it contained into new <see cref="SpeedAdjustmentContainer"/>s.
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/// </summary>
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/// <param name="speedAdjustment">The <see cref="SpeedAdjustmentContainer"/> to remove.</param>
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public void RemoveSpeedAdjustment(SpeedAdjustmentContainer speedAdjustment)
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{
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if (speedAdjustment == defaultSpeedAdjustment)
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throw new InvalidOperationException($"The default {nameof(SpeedAdjustmentContainer)} must not be removed.");
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if (!speedAdjustments.Remove(speedAdjustment))
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return;
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while (speedAdjustment.Count > 0)
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{
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DrawableHitObject hitObject = speedAdjustment[0];
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speedAdjustment.Remove(hitObject);
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Add(hitObject);
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}
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}
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public override IEnumerable<DrawableHitObject> Objects => speedAdjustments.SelectMany(s => s.Children);
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/// <summary>
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/// Adds a hit object to this <see cref="ScrollingHitObjectContainer"/>. The hit objects will be queued to be processed
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/// new <see cref="SpeedAdjustmentContainer"/>s are added to this <see cref="ScrollingHitObjectContainer"/>.
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/// </summary>
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/// <param name="hitObject">The hit object to add.</param>
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public override void Add(DrawableHitObject hitObject)
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{
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if (!(hitObject is IScrollingHitObject))
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throw new InvalidOperationException($"Hit objects added to a {nameof(ScrollingHitObjectContainer)} must implement {nameof(IScrollingHitObject)}.");
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adjustmentContainerAt(hitObject.HitObject.StartTime).Add(hitObject);
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}
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public override bool Remove(DrawableHitObject hitObject) => speedAdjustments.Any(s => s.Remove(hitObject));
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/// <summary>
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/// Finds the <see cref="SpeedAdjustmentContainer"/> which provides the speed adjustment active at a time.
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/// If there is no <see cref="SpeedAdjustmentContainer"/> active at the time, then the first (time-wise) speed adjustment is returned.
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/// </summary>
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/// <param name="time">The time to find the active <see cref="SpeedAdjustmentContainer"/> at.</param>
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/// <returns>The <see cref="SpeedAdjustmentContainer"/> active at <paramref name="time"/>. Null if there are no speed adjustments.</returns>
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private SpeedAdjustmentContainer adjustmentContainerAt(double time) => speedAdjustments.First(c => c.CanContain(time)) ?? defaultSpeedAdjustment;
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private class SortedContainer : Container<SpeedAdjustmentContainer>
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{
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protected override int Compare(Drawable x, Drawable y)
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{
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var sX = (SpeedAdjustmentContainer)x;
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var sY = (SpeedAdjustmentContainer)y;
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int result = sY.ControlPoint.StartTime.CompareTo(sX.ControlPoint.StartTime);
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if (result != 0)
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return result;
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return base.Compare(x, y);
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}
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}
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}
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}
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}
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