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62 lines
1.9 KiB
C#
62 lines
1.9 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 System.Diagnostics;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Rendering;
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using osuTK.Graphics;
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namespace osu.Game.Rulesets.Osu.Skinning.Default
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{
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public class DefaultSmoke : Smoke
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{
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private const double fade_out_delay = 8000;
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private const double fade_out_speed = 3;
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private const double fade_out_duration = 50;
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private const float alpha = 0.5f;
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protected override double LifetimeAfterSmokeEnd => fade_out_delay + fade_out_duration + (SmokeEndTime - SmokeStartTime) / fade_out_speed;
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public DefaultSmoke()
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{
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Radius = 2;
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}
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protected override DrawNode CreateDrawNode() => new DefaultSmokeDrawNode(this);
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private class DefaultSmokeDrawNode : SmokeDrawNode
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{
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private double fadeOutTime;
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public DefaultSmokeDrawNode(ITexturedShaderDrawable source)
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: base(source)
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{
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}
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protected override void UpdateDrawVariables(IRenderer renderer)
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{
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base.UpdateDrawVariables(renderer);
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fadeOutTime = SmokeStartTime + fade_out_speed * (CurrentTime - (SmokeEndTime + fade_out_delay));
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}
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protected override Color4 ColorAtTime(double pointTime)
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{
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var color = Color4.White;
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color.A = alpha;
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double timeDoingFadeOut = fadeOutTime - pointTime;
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if (timeDoingFadeOut > 0)
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{
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float fraction = Math.Clamp((float)(1 - (timeDoingFadeOut / fade_out_duration)), 0, 1);
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fraction = MathF.Pow(fraction, 5);
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color.A *= fraction;
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}
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return color;
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}
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}
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}
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}
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