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osu-lazer/osu.Game/Rulesets/UI/HitObjectContainer.cs
2019-07-18 00:03:04 +09:00

48 lines
1.9 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 System.Collections.Generic;
using System.Linq;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Rulesets.Objects.Drawables;
namespace osu.Game.Rulesets.UI
{
public class HitObjectContainer : LifetimeManagementContainer
{
public IEnumerable<DrawableHitObject> Objects => InternalChildren.Cast<DrawableHitObject>().OrderBy(h => h.HitObject.StartTime);
public IEnumerable<DrawableHitObject> AliveObjects => AliveInternalChildren.Cast<DrawableHitObject>().OrderBy(h => h.HitObject.StartTime);
public HitObjectContainer()
{
RelativeSizeAxes = Axes.Both;
}
public virtual void Add(DrawableHitObject hitObject) => AddInternal(hitObject);
public virtual bool Remove(DrawableHitObject hitObject) => RemoveInternal(hitObject);
protected override int Compare(Drawable x, Drawable y)
{
if (!(x is DrawableHitObject xObj) || !(y is DrawableHitObject yObj))
return base.Compare(x, y);
// Put earlier hitobjects towards the end of the list, so they handle input first
int i = yObj.HitObject.StartTime.CompareTo(xObj.HitObject.StartTime);
return i == 0 ? CompareReverseChildID(x, y) : i;
}
protected override void OnChildLifetimeBoundaryCrossed(LifetimeBoundaryCrossedEvent e)
{
if (!(e.Child is DrawableHitObject hitObject))
return;
if ((e.Kind == LifetimeBoundaryKind.End && e.Direction == LifetimeBoundaryCrossingDirection.Forward)
|| (e.Kind == LifetimeBoundaryKind.Start && e.Direction == LifetimeBoundaryCrossingDirection.Backward))
{
hitObject.OnKilled();
}
}
}
}