2019-01-24 16:43:03 +08:00
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// 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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2018-05-23 16:37:39 +08:00
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2018-05-23 17:52:09 +08:00
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using System.Diagnostics;
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using JetBrains.Annotations;
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2018-05-23 17:52:09 +08:00
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using osu.Framework.Audio;
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2019-02-21 18:04:31 +08:00
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using osu.Framework.Bindables;
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2018-05-23 16:37:39 +08:00
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namespace osu.Game.Beatmaps
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{
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/// <summary>
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/// A <see cref="Bindable{T}"/> for the <see cref="OsuGame"/> beatmap.
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2019-04-25 16:36:17 +08:00
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/// This should be used sparingly in-favour of <see cref="IBindable{WorkingBeatmap}"/>.
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/// </summary>
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public abstract class BindableBeatmap : NonNullableBindable<WorkingBeatmap>
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{
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protected AudioManager AudioManager;
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2018-05-23 17:52:09 +08:00
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private WorkingBeatmap lastBeatmap;
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protected BindableBeatmap(WorkingBeatmap defaultValue, AudioManager audioManager)
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: base(defaultValue)
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{
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// we don't want to attempt to update tracks if we are a bound copy.
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if (audioManager != null)
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{
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AudioManager = audioManager;
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ValueChanged += b => updateAudioTrack(b.NewValue);
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// If the track has changed prior to this being called, let's register it
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if (Value != Default)
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updateAudioTrack(Value);
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}
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}
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private void updateAudioTrack(WorkingBeatmap beatmap)
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{
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var trackLoaded = lastBeatmap?.TrackLoaded ?? false;
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// compare to last beatmap as sometimes the two may share a track representation (optimisation, see WorkingBeatmap.TransferTo)
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if (!trackLoaded || lastBeatmap?.Track != beatmap.Track)
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{
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if (trackLoaded)
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{
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Debug.Assert(lastBeatmap != null);
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Debug.Assert(lastBeatmap.Track != null);
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lastBeatmap.RecycleTrack();
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}
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}
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lastBeatmap = beatmap;
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}
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2018-05-24 11:42:58 +08:00
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/// <summary>
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/// Retrieve a new <see cref="BindableBeatmap"/> instance weakly bound to this <see cref="BindableBeatmap"/>.
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/// If you are further binding to events of the retrieved <see cref="BindableBeatmap"/>, ensure a local reference is held.
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/// </summary>
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[NotNull]
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public new abstract BindableBeatmap GetBoundCopy();
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}
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}
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