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56 lines
1.9 KiB
C#
56 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 osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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namespace osu.Game.Graphics.Containers
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{
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/// <summary>
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/// A container that adds the ability to shake its contents.
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/// </summary>
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public class ShakeContainer : Container
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{
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/// <summary>
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/// The length of a single shake.
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/// </summary>
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public float ShakeDuration = 80;
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/// <summary>
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/// Total number of shakes. May be shortened if possible.
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/// </summary>
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public float TotalShakes = 4;
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/// <summary>
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/// Pixels of displacement per shake.
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/// </summary>
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public float ShakeMagnitude = 8;
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/// <summary>
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/// Shake the contents of this container.
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/// </summary>
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/// <param name="maximumLength">The maximum length the shake should last.</param>
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public void Shake(double? maximumLength = null)
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{
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const float shake_amount = 8;
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// if we don't have enough time, don't bother shaking.
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if (maximumLength < ShakeDuration * 2)
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return;
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var sequence = this.MoveToX(shake_amount, ShakeDuration / 2, Easing.OutSine).Then()
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.MoveToX(-shake_amount, ShakeDuration, Easing.InOutSine).Then();
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// if we don't have enough time for the second shake, skip it.
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if (!maximumLength.HasValue || maximumLength >= ShakeDuration * 4)
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{
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sequence = sequence
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.MoveToX(shake_amount, ShakeDuration, Easing.InOutSine).Then()
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.MoveToX(-shake_amount, ShakeDuration, Easing.InOutSine).Then();
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}
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sequence.MoveToX(0, ShakeDuration / 2, Easing.InSine);
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}
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}
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}
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