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osu-lazer/osu.Game/Screens/Edit/EditorBeatmap.cs
2019-10-03 14:37:16 +09:00

124 lines
4.5 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;
using System.Collections.Generic;
using osu.Framework.Bindables;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Beatmaps.Timing;
using osu.Game.Rulesets.Objects;
namespace osu.Game.Screens.Edit
{
public class EditorBeatmap<T> : IEditorBeatmap<T>
where T : HitObject
{
/// <summary>
/// Invoked when a <see cref="HitObject"/> is added to this <see cref="EditorBeatmap{T}"/>.
/// </summary>
public event Action<HitObject> HitObjectAdded;
/// <summary>
/// Invoked when a <see cref="HitObject"/> is removed from this <see cref="EditorBeatmap{T}"/>.
/// </summary>
public event Action<HitObject> HitObjectRemoved;
/// <summary>
/// Invoked when the start time of a <see cref="HitObject"/> in this <see cref="EditorBeatmap{T}"/> was changed.
/// </summary>
public event Action<HitObject> StartTimeChanged;
private readonly Dictionary<T, Bindable<double>> startTimeBindables = new Dictionary<T, Bindable<double>>();
private readonly Beatmap<T> beatmap;
public EditorBeatmap(Beatmap<T> beatmap)
{
this.beatmap = beatmap;
foreach (var obj in HitObjects)
trackStartTime(obj);
}
public BeatmapInfo BeatmapInfo
{
get => beatmap.BeatmapInfo;
set => beatmap.BeatmapInfo = value;
}
public BeatmapMetadata Metadata => beatmap.Metadata;
public ControlPointInfo ControlPointInfo => beatmap.ControlPointInfo;
public List<BreakPeriod> Breaks => beatmap.Breaks;
public double TotalBreakTime => beatmap.TotalBreakTime;
public IReadOnlyList<T> HitObjects => beatmap.HitObjects;
IReadOnlyList<HitObject> IBeatmap.HitObjects => beatmap.HitObjects;
public IEnumerable<BeatmapStatistic> GetStatistics() => beatmap.GetStatistics();
public IBeatmap Clone() => (EditorBeatmap<T>)MemberwiseClone();
/// <summary>
/// Adds a <see cref="HitObject"/> to this <see cref="EditorBeatmap{T}"/>.
/// </summary>
/// <param name="hitObject">The <see cref="HitObject"/> to add.</param>
public void Add(T hitObject)
{
trackStartTime(hitObject);
// Preserve existing sorting order in the beatmap
var insertionIndex = beatmap.HitObjects.FindLastIndex(h => h.StartTime <= hitObject.StartTime);
beatmap.HitObjects.Insert(insertionIndex + 1, hitObject);
HitObjectAdded?.Invoke(hitObject);
}
/// <summary>
/// Removes a <see cref="HitObject"/> from this <see cref="EditorBeatmap{T}"/>.
/// </summary>
/// <param name="hitObject">The <see cref="HitObject"/> to add.</param>
public void Remove(T hitObject)
{
if (beatmap.HitObjects.Remove(hitObject))
{
var bindable = startTimeBindables[hitObject];
bindable.UnbindAll();
startTimeBindables.Remove(hitObject);
HitObjectRemoved?.Invoke(hitObject);
}
}
private void trackStartTime(T hitObject)
{
startTimeBindables[hitObject] = hitObject.StartTimeBindable.GetBoundCopy();
startTimeBindables[hitObject].ValueChanged += _ =>
{
// For now we'll remove and re-add the hitobject. This is not optimal and can be improved if required.
beatmap.HitObjects.Remove(hitObject);
var insertionIndex = beatmap.HitObjects.FindLastIndex(h => h.StartTime <= hitObject.StartTime);
beatmap.HitObjects.Insert(insertionIndex + 1, hitObject);
StartTimeChanged?.Invoke(hitObject);
};
}
/// <summary>
/// Adds a <see cref="HitObject"/> to this <see cref="EditorBeatmap{T}"/>.
/// </summary>
/// <param name="hitObject">The <see cref="HitObject"/> to add.</param>
public void Add(HitObject hitObject) => Add((T)hitObject);
/// <summary>
/// Removes a <see cref="HitObject"/> from this <see cref="EditorBeatmap{T}"/>.
/// </summary>
/// <param name="hitObject">The <see cref="HitObject"/> to add.</param>
public void Remove(HitObject hitObject) => Remove((T)hitObject);
}
}