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206 lines
7.2 KiB
C#
206 lines
7.2 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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#nullable disable
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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 osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Extensions.TypeExtensions;
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using osu.Framework.Graphics;
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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.Objects.Pooling;
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namespace osu.Game.Rulesets.UI
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{
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public class HitObjectContainer : PooledDrawableWithLifetimeContainer<HitObjectLifetimeEntry, DrawableHitObject>, IHitObjectContainer
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{
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public IEnumerable<DrawableHitObject> Objects => InternalChildren.Cast<DrawableHitObject>().OrderBy(h => h.HitObject.StartTime);
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public IEnumerable<DrawableHitObject> AliveObjects => AliveEntries.Select(pair => pair.Drawable).OrderBy(h => h.HitObject.StartTime);
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/// <summary>
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/// Invoked when a <see cref="DrawableHitObject"/> is judged.
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/// </summary>
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public event Action<DrawableHitObject, JudgementResult> NewResult;
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/// <summary>
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/// Invoked when a <see cref="DrawableHitObject"/> judgement is reverted.
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/// </summary>
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public event Action<DrawableHitObject, JudgementResult> RevertResult;
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/// <summary>
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/// Invoked when a <see cref="HitObject"/> becomes used by a <see cref="DrawableHitObject"/>.
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/// </summary>
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/// <remarks>
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/// If this <see cref="HitObjectContainer"/> uses pooled objects, this represents the time when the <see cref="HitObject"/>s become alive.
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/// </remarks>
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internal event Action<HitObject> HitObjectUsageBegan;
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/// <summary>
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/// Invoked when a <see cref="HitObject"/> becomes unused by a <see cref="DrawableHitObject"/>.
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/// </summary>
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/// <remarks>
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/// If this <see cref="HitObjectContainer"/> uses pooled objects, this represents the time when the <see cref="HitObject"/>s become dead.
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/// </remarks>
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internal event Action<HitObject> HitObjectUsageFinished;
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private readonly Dictionary<DrawableHitObject, IBindable> startTimeMap = new Dictionary<DrawableHitObject, IBindable>();
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private readonly Dictionary<HitObjectLifetimeEntry, DrawableHitObject> nonPooledDrawableMap = new Dictionary<HitObjectLifetimeEntry, DrawableHitObject>();
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[Resolved(CanBeNull = true)]
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private IPooledHitObjectProvider pooledObjectProvider { get; set; }
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public HitObjectContainer()
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{
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RelativeSizeAxes = Axes.Both;
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}
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protected override void LoadAsyncComplete()
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{
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base.LoadAsyncComplete();
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// Application of hitobjects during load() may have changed their start times, so ensure the correct sorting order.
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SortInternal();
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}
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#region Pooling support
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public override bool Remove(HitObjectLifetimeEntry entry)
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{
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if (!base.Remove(entry)) return false;
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// This logic is not in `Remove(DrawableHitObject)` because a non-pooled drawable may be removed by specifying its entry.
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if (nonPooledDrawableMap.Remove(entry, out var drawable))
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removeDrawable(drawable);
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return true;
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}
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protected sealed override DrawableHitObject GetDrawable(HitObjectLifetimeEntry entry)
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{
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if (nonPooledDrawableMap.TryGetValue(entry, out var drawable))
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return drawable;
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return pooledObjectProvider?.GetPooledDrawableRepresentation(entry.HitObject, null) ??
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throw new InvalidOperationException($"A drawable representation could not be retrieved for hitobject type: {entry.HitObject.GetType().ReadableName()}.");
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}
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protected override void AddDrawable(HitObjectLifetimeEntry entry, DrawableHitObject drawable)
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{
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if (nonPooledDrawableMap.ContainsKey(entry)) return;
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addDrawable(drawable);
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HitObjectUsageBegan?.Invoke(entry.HitObject);
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}
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protected override void RemoveDrawable(HitObjectLifetimeEntry entry, DrawableHitObject drawable)
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{
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drawable.OnKilled();
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if (nonPooledDrawableMap.ContainsKey(entry)) return;
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removeDrawable(drawable);
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HitObjectUsageFinished?.Invoke(entry.HitObject);
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}
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private void addDrawable(DrawableHitObject drawable)
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{
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drawable.OnNewResult += onNewResult;
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drawable.OnRevertResult += onRevertResult;
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bindStartTime(drawable);
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AddInternal(drawable);
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}
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private void removeDrawable(DrawableHitObject drawable)
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{
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drawable.OnNewResult -= onNewResult;
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drawable.OnRevertResult -= onRevertResult;
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unbindStartTime(drawable);
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RemoveInternal(drawable);
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}
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#endregion
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#region Non-pooling support
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public virtual void Add(DrawableHitObject drawable)
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{
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if (drawable.Entry == null)
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throw new InvalidOperationException($"May not add a {nameof(DrawableHitObject)} without {nameof(HitObject)} associated");
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nonPooledDrawableMap.Add(drawable.Entry, drawable);
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addDrawable(drawable);
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Add(drawable.Entry);
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}
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public virtual bool Remove(DrawableHitObject drawable)
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{
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if (drawable.Entry == null)
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return false;
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return Remove(drawable.Entry);
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}
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public int IndexOf(DrawableHitObject hitObject) => IndexOfInternal(hitObject);
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#endregion
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private void onNewResult(DrawableHitObject d, JudgementResult r) => NewResult?.Invoke(d, r);
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private void onRevertResult(DrawableHitObject d, JudgementResult r) => RevertResult?.Invoke(d, r);
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#region Comparator + StartTime tracking
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private void bindStartTime(DrawableHitObject hitObject)
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{
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var bindable = hitObject.StartTimeBindable.GetBoundCopy();
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bindable.BindValueChanged(_ =>
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{
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if (LoadState >= LoadState.Ready)
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SortInternal();
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});
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startTimeMap[hitObject] = bindable;
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}
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private void unbindStartTime(DrawableHitObject hitObject)
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{
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startTimeMap[hitObject].UnbindAll();
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startTimeMap.Remove(hitObject);
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}
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private void unbindAllStartTimes()
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{
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foreach (var kvp in startTimeMap)
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kvp.Value.UnbindAll();
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startTimeMap.Clear();
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}
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protected override int Compare(Drawable x, Drawable y)
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{
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if (!(x is DrawableHitObject xObj) || !(y is DrawableHitObject yObj))
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return base.Compare(x, y);
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// Put earlier hitobjects towards the end of the list, so they handle input first
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int i = yObj.HitObject.StartTime.CompareTo(xObj.HitObject.StartTime);
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return i == 0 ? CompareReverseChildID(x, y) : i;
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}
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#endregion
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protected override void Dispose(bool isDisposing)
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{
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base.Dispose(isDisposing);
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unbindAllStartTimes();
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}
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}
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}
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