mirror of
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d83a2d4dc6
Lifetime is very tightly controlled here, so all should be okay.
115 lines
5.0 KiB
C#
115 lines
5.0 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 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.Game.Rulesets.Objects.Drawables;
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using OpenTK;
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namespace osu.Game.Rulesets.Timing
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{
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/// <summary>
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/// A container that provides the speed adjustments defined by <see cref="MultiplierControlPoint"/>s to affect the scroll speed
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/// of container <see cref="DrawableHitObject"/>s.
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/// </summary>
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public class SpeedAdjustmentContainer : Container<DrawableHitObject>
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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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/// </summary>
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public readonly Bindable<double> VisibleTimeRange = new Bindable<double> { 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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protected override Container<DrawableHitObject> Content => content;
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private readonly Container<DrawableHitObject> content;
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/// <summary>
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/// The axes which the content of this container will scroll through.
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/// </summary>
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public Axes ScrollingAxes
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{
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get { return scrollingContainer.ScrollingAxes; }
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set { scrollingContainer.ScrollingAxes = value; }
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}
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public override bool RemoveWhenNotAlive => false;
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protected override bool RequiresChildrenUpdate => true;
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/// <summary>
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/// The <see cref="MultiplierControlPoint"/> that defines the speed adjustments.
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/// </summary>
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public readonly MultiplierControlPoint ControlPoint;
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private readonly ScrollingContainer scrollingContainer;
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/// <summary>
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/// Creates a new <see cref="SpeedAdjustmentContainer"/>.
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/// </summary>
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/// <param name="controlPoint">The <see cref="MultiplierControlPoint"/> that defines the speed adjustments.</param>
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public SpeedAdjustmentContainer(MultiplierControlPoint controlPoint)
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{
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ControlPoint = controlPoint;
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RelativeSizeAxes = Axes.Both;
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scrollingContainer = CreateScrollingContainer();
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scrollingContainer.ControlPoint = ControlPoint;
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scrollingContainer.VisibleTimeRange.BindTo(VisibleTimeRange);
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AddInternal(content = scrollingContainer);
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}
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protected override void Update()
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{
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float multiplier = (float)ControlPoint.Multiplier;
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// The speed adjustment happens by modifying our size by the multiplier while maintaining the visible time range as the relatve size for our children
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Size = new Vector2((ScrollingAxes & Axes.X) > 0 ? multiplier : 1, (ScrollingAxes & Axes.Y) > 0 ? multiplier : 1);
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if (Reversed)
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{
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RelativeChildSize = new Vector2((ScrollingAxes & Axes.X) > 0 ? (float)-VisibleTimeRange : 1, (ScrollingAxes & Axes.Y) > 0 ? (float)-VisibleTimeRange : 1);
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RelativeChildOffset = new Vector2((ScrollingAxes & Axes.X) > 0 ? (float)VisibleTimeRange : 0, (ScrollingAxes & Axes.Y) > 0 ? (float)VisibleTimeRange : 0);
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Origin = Anchor = Anchor.BottomRight;
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}
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else
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{
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RelativeChildSize = new Vector2((ScrollingAxes & Axes.X) > 0 ? (float)VisibleTimeRange : 1, (ScrollingAxes & Axes.Y) > 0 ? (float)VisibleTimeRange : 1);
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RelativeChildOffset = Vector2.Zero;
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Origin = Anchor = Anchor.TopLeft;
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}
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}
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public override double LifetimeStart => ControlPoint.StartTime - VisibleTimeRange;
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public override double LifetimeEnd => ControlPoint.StartTime + scrollingContainer.Duration + VisibleTimeRange;
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public override void Add(DrawableHitObject drawable)
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{
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var scrollingHitObject = drawable as IScrollingHitObject;
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if (scrollingHitObject != null)
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{
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scrollingHitObject.LifetimeOffset.BindTo(VisibleTimeRange);
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scrollingHitObject.ScrollingAxes = ScrollingAxes;
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}
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base.Add(drawable);
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}
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/// <summary>
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/// Whether a point in time falls within this <see cref="SpeedAdjustmentContainer"/>s affecting timespan.
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/// </summary>
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public bool CanContain(double startTime) => ControlPoint.StartTime <= startTime;
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/// <summary>
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/// Creates the <see cref="ScrollingContainer"/> which contains the scrolling <see cref="DrawableHitObject"/>s of this container.
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/// </summary>
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/// <returns>The <see cref="ScrollingContainer"/>.</returns>
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protected virtual ScrollingContainer CreateScrollingContainer() => new LinearScrollingContainer(ControlPoint);
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}
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}
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