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osu-lazer/osu.Game/Overlays/Mods/ModButton.cs
2020-01-20 18:17:21 +09:00

306 lines
9.3 KiB
C#

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