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osu-lazer/osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/SpinnerDisc.cs

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// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Input;
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using osu.Game.Graphics;
using OpenTK;
using OpenTK.Graphics;
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namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
{
public class SpinnerDisc : CircularContainer, IHasAccentColour
{
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private readonly Spinner spinner;
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public Color4 AccentColour
{
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get { return background.AccentColour; }
set { background.AccentColour = value; }
}
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private readonly SpinnerBackground background;
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private const float idle_alpha = 0.2f;
private const float tracking_alpha = 0.4f;
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public override bool IsPresent => true; // handle input when hidden
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public SpinnerDisc(Spinner s)
{
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spinner = s;
RelativeSizeAxes = Axes.Both;
Children = new Drawable[]
{
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background = new SpinnerBackground { Alpha = idle_alpha },
};
}
public override bool ReceiveMouseInputAt(Vector2 screenSpacePos) => true;
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private bool tracking;
public bool Tracking
{
get { return tracking; }
set
{
if (value == tracking) return;
tracking = value;
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background.FadeTo(tracking ? tracking_alpha : idle_alpha, 100);
}
}
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private bool complete;
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public bool Complete
{
get { return complete; }
set
{
if (value == complete) return;
complete = value;
updateCompleteTick();
}
}
protected override bool OnMouseMove(InputState state)
{
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mousePosition = Parent.ToLocalSpace(state.Mouse.NativeState.Position);
return base.OnMouseMove(state);
}
private Vector2 mousePosition;
private float lastAngle;
private float currentRotation;
public float RotationAbsolute;
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private int completeTick;
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private bool updateCompleteTick() => completeTick != (completeTick = (int)(RotationAbsolute / 360));
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private bool rotationTransferred;
protected override void Update()
{
base.Update();
var thisAngle = -(float)MathHelper.RadiansToDegrees(Math.Atan2(mousePosition.X - DrawSize.X / 2, mousePosition.Y - DrawSize.Y / 2));
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bool validAndTracking = tracking && spinner.StartTime <= Time.Current && spinner.EndTime > Time.Current;
if (validAndTracking)
{
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if (!rotationTransferred)
{
currentRotation = Rotation * 2;
rotationTransferred = true;
}
if (thisAngle - lastAngle > 180)
lastAngle += 360;
else if (lastAngle - thisAngle > 180)
lastAngle -= 360;
currentRotation += thisAngle - lastAngle;
RotationAbsolute += Math.Abs(thisAngle - lastAngle);
}
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lastAngle = thisAngle;
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if (Complete && updateCompleteTick())
{
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background.FinishTransforms(false, nameof(Alpha));
background
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.FadeTo(tracking_alpha + 0.2f, 60, Easing.OutExpo)
.Then()
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.FadeTo(tracking_alpha, 250, Easing.OutQuint);
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}
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this.RotateTo(currentRotation / 2, validAndTracking ? 500 : 1500, Easing.OutExpo);
}
}
}