mirror of
https://github.com/ppy/osu.git
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297 lines
9.2 KiB
C#
297 lines
9.2 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using osuTK;
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using osuTK.Graphics;
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using osuTK.Input;
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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.Game.Graphics.Sprites;
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using osu.Game.Rulesets.Mods;
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using osu.Game.Rulesets.UI;
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using System;
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using System.Linq;
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using osu.Framework.Graphics.Cursor;
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using osu.Framework.Input.Events;
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using osu.Game.Graphics.UserInterface;
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namespace osu.Game.Overlays.Mods
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{
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/// <summary>
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/// Represents a clickable button which can cycle through one of more mods.
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/// </summary>
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public class ModButton : ModButtonEmpty, IHasTooltip
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{
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private ModIcon foregroundIcon;
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private ModIcon backgroundIcon;
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private readonly SpriteText text;
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private readonly Container<ModIcon> iconsContainer;
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/// <summary>
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/// Fired when the selection changes.
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/// </summary>
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public Action<Mod> SelectionChanged;
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public string TooltipText => (SelectedMod?.Description ?? Mods.FirstOrDefault()?.Description) ?? string.Empty;
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private const Easing mod_switch_easing = Easing.InOutSine;
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private const double mod_switch_duration = 120;
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// A selected index of -1 means not selected.
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private int selectedIndex = -1;
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/// <summary>
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/// Change the selected mod index of this button.
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/// </summary>
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/// <param name="newIndex">The new index.</param>
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/// <returns>Whether the selection changed.</returns>
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private bool changeSelectedIndex(int newIndex)
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{
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if (newIndex == selectedIndex) return false;
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int direction = newIndex < selectedIndex ? -1 : 1;
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bool beforeSelected = Selected;
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Mod modBefore = SelectedMod ?? Mods[0];
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if (newIndex >= Mods.Length)
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newIndex = -1;
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else if (newIndex < -1)
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newIndex = Mods.Length - 1;
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if (newIndex >= 0 && !Mods[newIndex].HasImplementation)
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return false;
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selectedIndex = newIndex;
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Mod modAfter = SelectedMod ?? Mods[0];
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if (beforeSelected != Selected)
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{
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iconsContainer.RotateTo(Selected ? 5f : 0f, 300, Easing.OutElastic);
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iconsContainer.ScaleTo(Selected ? 1.1f : 1f, 300, Easing.OutElastic);
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}
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if (modBefore != modAfter)
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{
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const float rotate_angle = 16;
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foregroundIcon.RotateTo(rotate_angle * direction, mod_switch_duration, mod_switch_easing);
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backgroundIcon.RotateTo(-rotate_angle * direction, mod_switch_duration, mod_switch_easing);
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backgroundIcon.Icon = modAfter.Icon;
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using (BeginDelayedSequence(mod_switch_duration, true))
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{
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foregroundIcon
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.RotateTo(-rotate_angle * direction)
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.RotateTo(0f, mod_switch_duration, mod_switch_easing);
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backgroundIcon
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.RotateTo(rotate_angle * direction)
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.RotateTo(0f, mod_switch_duration, mod_switch_easing);
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Schedule(() => displayMod(modAfter));
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}
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}
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foregroundIcon.Highlighted = Selected;
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SelectionChanged?.Invoke(SelectedMod);
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return true;
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}
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public bool Selected => selectedIndex != -1;
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private Color4 selectedColour;
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public Color4 SelectedColour
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{
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get { return selectedColour; }
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set
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{
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if (value == selectedColour) return;
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selectedColour = value;
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if (Selected) foregroundIcon.Colour = value;
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}
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}
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private Mod mod;
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private readonly Container scaleContainer;
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public Mod Mod
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{
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get { return mod; }
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set
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{
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mod = value;
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if (mod == null)
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{
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Mods = Array.Empty<Mod>();
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Alpha = 0;
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}
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else
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{
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Mods = (mod as MultiMod)?.Mods ?? new[] { mod };
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Alpha = 1;
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}
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createIcons();
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if (Mods.Length > 0)
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{
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displayMod(Mods[0]);
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}
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}
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}
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public Mod[] Mods { get; private set; }
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public virtual Mod SelectedMod => Mods.ElementAtOrDefault(selectedIndex);
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protected override bool OnMouseDown(MouseDownEvent e)
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{
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scaleContainer.ScaleTo(0.9f, 800, Easing.Out);
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return base.OnMouseDown(e);
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}
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protected override bool OnMouseUp(MouseUpEvent e)
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{
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scaleContainer.ScaleTo(1, 500, Easing.OutElastic);
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// only trigger the event if we are inside the area of the button
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if (Contains(e.ScreenSpaceMousePosition))
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{
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switch (e.Button)
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{
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case MouseButton.Left:
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SelectNext(1);
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break;
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case MouseButton.Right:
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SelectNext(-1);
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break;
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}
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}
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return true;
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}
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/// <summary>
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/// Select the next available mod in a specified direction.
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/// </summary>
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/// <param name="direction">1 for forwards, -1 for backwards.</param>
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public void SelectNext(int direction)
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{
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int start = selectedIndex + direction;
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// wrap around if we are at an extremity.
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if (start >= Mods.Length)
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start = -1;
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else if (start < -1)
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start = Mods.Length - 1;
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for (int i = start; i < Mods.Length && i >= 0; i += direction)
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if (SelectAt(i))
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return;
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Deselect();
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}
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public bool SelectAt(int index)
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{
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if (!Mods[index].HasImplementation) return false;
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changeSelectedIndex(index);
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return true;
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}
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public void Deselect() => changeSelectedIndex(-1);
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private void displayMod(Mod mod)
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{
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if (backgroundIcon != null)
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backgroundIcon.Icon = foregroundIcon.Icon;
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foregroundIcon.Icon = mod.Icon;
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text.Text = mod.Name;
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Colour = mod.HasImplementation ? Color4.White : Color4.Gray;
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}
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private void createIcons()
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{
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iconsContainer.Clear();
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if (Mods.Length > 1)
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{
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iconsContainer.AddRange(new[]
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{
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backgroundIcon = new PassThroughTooltipModIcon(Mods[1])
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{
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Origin = Anchor.BottomRight,
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Anchor = Anchor.BottomRight,
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Position = new Vector2(1.5f),
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},
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foregroundIcon = new PassThroughTooltipModIcon(Mods[0])
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{
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Origin = Anchor.BottomRight,
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Anchor = Anchor.BottomRight,
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Position = new Vector2(-1.5f),
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},
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});
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}
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else
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{
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iconsContainer.Add(foregroundIcon = new PassThroughTooltipModIcon(Mod)
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{
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Origin = Anchor.Centre,
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Anchor = Anchor.Centre,
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});
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}
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}
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public ModButton(Mod mod)
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{
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Children = new Drawable[]
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{
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new Container
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{
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Size = new Vector2(77f, 80f),
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Origin = Anchor.TopCentre,
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Anchor = Anchor.TopCentre,
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Children = new Drawable[]
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{
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scaleContainer = new Container
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{
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Child = iconsContainer = new Container<ModIcon>
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{
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RelativeSizeAxes = Axes.Both,
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Origin = Anchor.Centre,
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Anchor = Anchor.Centre,
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},
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RelativeSizeAxes = Axes.Both,
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Origin = Anchor.Centre,
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Anchor = Anchor.Centre,
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}
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}
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},
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text = new OsuSpriteText
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{
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Y = 75,
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Origin = Anchor.TopCentre,
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Anchor = Anchor.TopCentre,
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TextSize = 18,
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},
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new HoverClickSounds()
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};
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Mod = mod;
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}
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private class PassThroughTooltipModIcon : ModIcon
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{
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public override string TooltipText => null;
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public PassThroughTooltipModIcon(Mod mod)
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: base(mod)
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{
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}
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}
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}
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}
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