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d83a2d4dc6
Lifetime is very tightly controlled here, so all should be okay.
94 lines
3.8 KiB
C#
94 lines
3.8 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.Linq;
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using osu.Framework.Caching;
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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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using osu.Game.Rulesets.Objects.Types;
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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 scrolls relative to the current time. Will autosize to the total duration of all contained hit objects along the scrolling axes.
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/// </summary>
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public abstract class ScrollingContainer : 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 BindableDouble VisibleTimeRange = new BindableDouble { Default = 1000 };
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/// <summary>
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/// The axes through which this <see cref="ScrollingContainer"/> scrolls. This is set by the <see cref="SpeedAdjustmentContainer"/>.
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/// </summary>
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internal Axes ScrollingAxes;
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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 control point that defines the speed adjustments for this container. This is set by the <see cref="SpeedAdjustmentContainer"/>.
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/// </summary>
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internal MultiplierControlPoint ControlPoint;
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private Cached<double> durationBacking;
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/// <summary>
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/// Creates a new <see cref="ScrollingContainer"/>.
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/// </summary>
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protected ScrollingContainer()
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{
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RelativeSizeAxes = Axes.Both;
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RelativePositionAxes = Axes.Both;
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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 hX = (DrawableHitObject)x;
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var hY = (DrawableHitObject)y;
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int result = hY.HitObject.StartTime.CompareTo(hX.HitObject.StartTime);
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if (result != 0)
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return result;
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return base.Compare(y, x);
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}
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public override void Add(DrawableHitObject drawable)
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{
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durationBacking.Invalidate();
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base.Add(drawable);
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}
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public override bool Remove(DrawableHitObject drawable)
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{
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durationBacking.Invalidate();
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return base.Remove(drawable);
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}
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// Todo: This may underestimate the size of the hit object in some cases, but won't be too much of a problem for now
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private double computeDuration() => Math.Max(0, Children.Select(c => (c.HitObject as IHasEndTime)?.EndTime ?? c.HitObject.StartTime).DefaultIfEmpty().Max() - ControlPoint.StartTime) + 1000;
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/// <summary>
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/// An approximate total duration of this scrolling container.
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/// </summary>
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public double Duration => durationBacking.IsValid ? durationBacking : (durationBacking.Value = computeDuration());
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protected override void Update()
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{
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base.Update();
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RelativeChildOffset = new Vector2((ScrollingAxes & Axes.X) > 0 ? (float)ControlPoint.StartTime : 0, (ScrollingAxes & Axes.Y) > 0 ? (float)ControlPoint.StartTime : 0);
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// We want our size and position-space along the scrolling axes to span our duration to completely enclose all the hit objects
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Size = new Vector2((ScrollingAxes & Axes.X) > 0 ? (float)Duration : Size.X, (ScrollingAxes & Axes.Y) > 0 ? (float)Duration : Size.Y);
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// And we need to make sure the hit object's position-space doesn't change due to our resizing
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RelativeChildSize = Size;
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}
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}
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}
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