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osu-lazer/osu.Game.Rulesets.Osu/Skinning/Default/DefaultSliderBall.cs

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// 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 osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Game.Rulesets.Objects.Drawables;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Rulesets.Osu.Objects.Drawables;
using osu.Game.Skinning;
using osuTK;
using osuTK.Graphics;
namespace osu.Game.Rulesets.Osu.Skinning.Default
{
public class DefaultSliderBall : CompositeDrawable
{
private Box box = null!;
[Resolved(canBeNull: true)]
private DrawableHitObject? parentObject { get; set; }
[BackgroundDependencyLoader]
private void load(ISkinSource skin)
{
RelativeSizeAxes = Axes.Both;
float radius = skin.GetConfig<OsuSkinConfiguration, float>(OsuSkinConfiguration.SliderPathRadius)?.Value ?? OsuHitObject.OBJECT_RADIUS;
InternalChild = new CircularContainer
{
Masking = true,
RelativeSizeAxes = Axes.Both,
Scale = new Vector2(radius / OsuHitObject.OBJECT_RADIUS),
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
Blending = BlendingParameters.Additive,
BorderThickness = 10,
BorderColour = Color4.White,
Alpha = 1,
Child = box = new Box
{
Blending = BlendingParameters.Additive,
RelativeSizeAxes = Axes.Both,
Colour = Color4.White,
AlwaysPresent = true,
Alpha = 0
}
};
if (parentObject != null)
{
var slider = (DrawableSlider)parentObject;
slider.Tracking.BindValueChanged(trackingChanged, true);
}
}
protected override void LoadComplete()
{
base.LoadComplete();
if (parentObject != null)
{
parentObject.ApplyCustomUpdateState += updateStateTransforms;
updateStateTransforms(parentObject, parentObject.State.Value);
}
}
private void trackingChanged(ValueChangedEvent<bool> tracking) =>
box.FadeTo(tracking.NewValue ? 0.3f : 0.05f, 200, Easing.OutQuint);
private void updateStateTransforms(DrawableHitObject drawableObject, ArmedState state)
{
// Gets called by slider ticks, tails, etc., leading to duplicated
// animations which may negatively affect performance
if (drawableObject is not DrawableSlider)
return;
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const float fade_duration = 450f;
using (BeginAbsoluteSequence(drawableObject.StateUpdateTime))
{
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this.FadeIn()
.ScaleTo(1f);
}
using (BeginAbsoluteSequence(drawableObject.HitStateUpdateTime))
{
// intentionally pile on an extra FadeOut to make it happen much faster
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this.FadeOut(fade_duration / 4, Easing.Out);
switch (state)
{
case ArmedState.Hit:
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this.ScaleTo(1.4f, fade_duration, Easing.Out);
break;
}
}
}
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
if (parentObject != null)
parentObject.ApplyCustomUpdateState -= updateStateTransforms;
}
}
}