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168 lines
6.4 KiB
C#
168 lines
6.4 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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using System;
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using JetBrains.Annotations;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Extensions.Color4Extensions;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Effects;
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using osu.Framework.Graphics.Shapes;
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using osu.Framework.Layout;
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using osu.Game.Rulesets.Mania.Objects.Drawables;
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using osu.Game.Rulesets.Objects.Drawables;
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using osuTK.Graphics;
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namespace osu.Game.Rulesets.Mania.Skinning.Default
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{
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/// <summary>
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/// Represents length-wise portion of a hold note.
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/// </summary>
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public class DefaultBodyPiece : CompositeDrawable, IHoldNoteBody
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{
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protected readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
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protected readonly IBindable<bool> IsHitting = new Bindable<bool>();
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protected Drawable Background { get; private set; }
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private Container foregroundContainer;
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public DefaultBodyPiece()
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{
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Blending = BlendingParameters.Additive;
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}
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[BackgroundDependencyLoader(true)]
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private void load([CanBeNull] DrawableHitObject drawableObject)
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{
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InternalChildren = new[]
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{
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Background = new Box { RelativeSizeAxes = Axes.Both },
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foregroundContainer = new Container { RelativeSizeAxes = Axes.Both }
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};
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if (drawableObject != null)
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{
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var holdNote = (DrawableHoldNote)drawableObject;
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AccentColour.BindTo(drawableObject.AccentColour);
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IsHitting.BindTo(holdNote.IsHitting);
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}
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AccentColour.BindValueChanged(onAccentChanged, true);
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Recycle();
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}
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public void Recycle() => foregroundContainer.Child = CreateForeground();
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protected virtual Drawable CreateForeground() => new ForegroundPiece
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{
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AccentColour = { BindTarget = AccentColour },
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IsHitting = { BindTarget = IsHitting }
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};
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private void onAccentChanged(ValueChangedEvent<Color4> accent) => Background.Colour = accent.NewValue.Opacity(0.7f);
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private class ForegroundPiece : CompositeDrawable
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{
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public readonly Bindable<Color4> AccentColour = new Bindable<Color4>();
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public readonly IBindable<bool> IsHitting = new Bindable<bool>();
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private readonly LayoutValue subtractionCache = new LayoutValue(Invalidation.DrawSize);
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private BufferedContainer foregroundBuffer;
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private BufferedContainer subtractionBuffer;
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private Container subtractionLayer;
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public ForegroundPiece()
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{
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RelativeSizeAxes = Axes.Both;
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AddLayout(subtractionCache);
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}
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[BackgroundDependencyLoader]
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private void load()
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{
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InternalChild = foregroundBuffer = new BufferedContainer(cachedFrameBuffer: true)
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{
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Blending = BlendingParameters.Additive,
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RelativeSizeAxes = Axes.Both,
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Children = new Drawable[]
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{
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new Box { RelativeSizeAxes = Axes.Both },
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subtractionBuffer = new BufferedContainer(cachedFrameBuffer: true)
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{
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RelativeSizeAxes = Axes.Both,
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// This is needed because we're blending with another object
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BackgroundColour = Color4.White.Opacity(0),
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// The 'hole' is achieved by subtracting the result of this container with the parent
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Blending = new BlendingParameters { AlphaEquation = BlendingEquation.ReverseSubtract },
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Child = subtractionLayer = new CircularContainer
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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// Height computed in Update
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Width = 1,
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Masking = true,
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Child = new Box
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{
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RelativeSizeAxes = Axes.Both,
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Alpha = 0,
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AlwaysPresent = true
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}
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}
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}
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}
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};
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AccentColour.BindValueChanged(onAccentChanged, true);
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IsHitting.BindValueChanged(_ => onAccentChanged(new ValueChangedEvent<Color4>(AccentColour.Value, AccentColour.Value)), true);
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}
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private void onAccentChanged(ValueChangedEvent<Color4> accent)
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{
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foregroundBuffer.Colour = accent.NewValue.Opacity(0.5f);
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const float animation_length = 50;
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foregroundBuffer.ClearTransforms(false, nameof(foregroundBuffer.Colour));
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if (IsHitting.Value)
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{
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// wait for the next sync point
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double synchronisedOffset = animation_length * 2 - Time.Current % (animation_length * 2);
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using (foregroundBuffer.BeginDelayedSequence(synchronisedOffset))
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foregroundBuffer.FadeColour(accent.NewValue.Lighten(0.2f), animation_length).Then().FadeColour(foregroundBuffer.Colour, animation_length).Loop();
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}
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subtractionCache.Invalidate();
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}
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protected override void Update()
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{
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base.Update();
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if (!subtractionCache.IsValid)
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{
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subtractionLayer.Width = 5;
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subtractionLayer.Height = Math.Max(0, DrawHeight - DrawWidth);
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subtractionLayer.EdgeEffect = new EdgeEffectParameters
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{
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Colour = Color4.White,
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Type = EdgeEffectType.Glow,
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Radius = DrawWidth
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};
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foregroundBuffer.ForceRedraw();
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subtractionBuffer.ForceRedraw();
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subtractionCache.Validate();
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}
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}
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}
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}
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}
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