mirror of https://github.com/ppy/osu
60 lines
1.8 KiB
C#
60 lines
1.8 KiB
C#
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// 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 osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Sprites;
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using osu.Framework.Graphics.Textures;
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using osu.Framework.Utils;
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using osuTK;
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namespace osu.Game.Graphics
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{
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public class ParticleExplosion : CompositeDrawable
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{
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public ParticleExplosion(Texture texture, int particleCount, double duration)
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{
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for (int i = 0; i < particleCount; i++)
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{
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double rDuration = RNG.NextDouble(duration / 3, duration);
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AddInternal(new Particle(rDuration, RNG.NextSingle(0, MathF.PI * 2))
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{
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Texture = texture
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});
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}
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}
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private class Particle : Sprite
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{
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private readonly double duration;
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private readonly float direction;
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private Vector2 positionForOffset(float offset) => new Vector2(
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(float)(offset * Math.Sin(direction)),
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(float)(offset * Math.Cos(direction))
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);
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public Particle(double duration, float direction)
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{
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this.duration = duration;
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this.direction = direction;
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Anchor = Anchor.Centre;
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Origin = Anchor.Centre;
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RelativePositionAxes = Axes.Both;
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Position = positionForOffset(0);
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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this.MoveTo(positionForOffset(1), duration);
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this.FadeOut(duration);
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Expire();
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}
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}
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}
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}
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