mirror of
https://github.com/ppy/osu.git
synced 2025-03-15 17:47:18 +08:00
Introduce HitObjectProperty<T>
This commit is contained in:
parent
5055e32769
commit
5ddb5a3d74
44
osu.Game/Rulesets/Objects/HitObjectProperty.cs
Normal file
44
osu.Game/Rulesets/Objects/HitObjectProperty.cs
Normal file
@ -0,0 +1,44 @@
|
||||
// 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.
|
||||
|
||||
#nullable disable
|
||||
|
||||
using JetBrains.Annotations;
|
||||
using osu.Framework.Bindables;
|
||||
|
||||
namespace osu.Game.Rulesets.Objects
|
||||
{
|
||||
/// <summary>
|
||||
/// Represents a wrapper containing a lazily-initialised <see cref="Bindable{T}"/>, backed by a temporary field used for <see cref="Value"/> storage until initialisation.
|
||||
/// </summary>
|
||||
public struct HitObjectProperty<T>
|
||||
{
|
||||
[CanBeNull]
|
||||
private Bindable<T> backingBindable;
|
||||
|
||||
/// <summary>
|
||||
/// A temporary field to store the current value to, prior to <see cref="Bindable"/>'s initialisation.
|
||||
/// </summary>
|
||||
private T backingValue;
|
||||
|
||||
/// <summary>
|
||||
/// The underlying <see cref="Bindable{T}"/>, only initialised on first access.
|
||||
/// </summary>
|
||||
public Bindable<T> Bindable => backingBindable ??= new Bindable<T> { Value = backingValue };
|
||||
|
||||
/// <summary>
|
||||
/// The current value, derived from and delegated to <see cref="Bindable"/> if initialised, or a temporary field otherwise.
|
||||
/// </summary>
|
||||
public T Value
|
||||
{
|
||||
get => backingBindable != null ? backingBindable.Value : backingValue;
|
||||
set
|
||||
{
|
||||
if (backingBindable != null)
|
||||
backingBindable.Value = value;
|
||||
else
|
||||
backingValue = value;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
Loading…
x
Reference in New Issue
Block a user