osu/osu.Game.Rulesets.Taiko/UI/InputDrum.cs

// 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.

#nullable disable

using System;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Graphics.Textures;
using osu.Framework.Input.Bindings;
using osu.Framework.Input.Events;
using osu.Game.Graphics;
using osu.Game.Screens.Ranking;
using osu.Game.Skinning;
using osuTK;

namespace osu.Game.Rulesets.Taiko.UI
{
    /// <summary>
    /// A component of the playfield that captures input and displays input as a drum.
    /// </summary>
    internal class InputDrum : Container
    {
        private const float middle_split = 0.025f;

        public InputDrum()
        {
            AutoSizeAxes = Axes.X;
            RelativeSizeAxes = Axes.Y;
        }

        [BackgroundDependencyLoader]
        private void load()
        {
            Children = new Drawable[]
            {
                new SkinnableDrawable(new TaikoSkinComponent(TaikoSkinComponents.InputDrum), _ => new DefaultInputDrum())
                {
                    RelativeSizeAxes = Axes.Y,
                    AutoSizeAxes = Axes.X,
                },
            };
        }

        private class DefaultInputDrum : AspectContainer
        {
            public DefaultInputDrum()
            {
                RelativeSizeAxes = Axes.Y;
            }

            [BackgroundDependencyLoader]
            private void load()
            {
                InternalChild = new Container
                {
                    Anchor = Anchor.Centre,
                    Origin = Anchor.Centre,
                    RelativeSizeAxes = Axes.Both,
                    Scale = new Vector2(0.9f),
                    Children = new[]
                    {
                        new TaikoHalfDrum(false)
                        {
                            Name = "Left Half",
                            Anchor = Anchor.Centre,
                            Origin = Anchor.CentreRight,
                            RelativeSizeAxes = Axes.Both,
                            RelativePositionAxes = Axes.X,
                            X = -middle_split / 2,
                            RimAction = TaikoAction.LeftRim,
                            CentreAction = TaikoAction.LeftCentre
                        },
                        new TaikoHalfDrum(true)
                        {
                            Name = "Right Half",
                            Anchor = Anchor.Centre,
                            Origin = Anchor.CentreLeft,
                            RelativeSizeAxes = Axes.Both,
                            RelativePositionAxes = Axes.X,
                            X = middle_split / 2,
                            RimAction = TaikoAction.RightRim,
                            CentreAction = TaikoAction.RightCentre
                        }
                    }
                };
            }

            /// <summary>
            /// A half-drum. Contains one centre and one rim hit.
            /// </summary>
            private class TaikoHalfDrum : Container, IKeyBindingHandler<TaikoAction>
            {
                /// <summary>
                /// The key to be used for the rim of the half-drum.
                /// </summary>
                public TaikoAction RimAction;

                /// <summary>
                /// The key to be used for the centre of the half-drum.
                /// </summary>
                public TaikoAction CentreAction;

                private readonly Sprite rim;
                private readonly Sprite rimHit;
                private readonly Sprite centre;
                private readonly Sprite centreHit;

                public TaikoHalfDrum(bool flipped)
                {
                    Masking = true;

                    Children = new Drawable[]
                    {
                        rim = new Sprite
                        {
                            Anchor = flipped ? Anchor.CentreLeft : Anchor.CentreRight,
                            Origin = Anchor.Centre,
                            RelativeSizeAxes = Axes.Both
                        },
                        rimHit = new Sprite
                        {
                            Anchor = flipped ? Anchor.CentreLeft : Anchor.CentreRight,
                            Origin = Anchor.Centre,
                            RelativeSizeAxes = Axes.Both,
                            Alpha = 0,
                            Blending = BlendingParameters.Additive,
                        },
                        centre = new Sprite
                        {
                            Anchor = flipped ? Anchor.CentreLeft : Anchor.CentreRight,
                            Origin = Anchor.Centre,
                            RelativeSizeAxes = Axes.Both,
                            Size = new Vector2(0.7f)
                        },
                        centreHit = new Sprite
                        {
                            Anchor = flipped ? Anchor.CentreLeft : Anchor.CentreRight,
                            Origin = Anchor.Centre,
                            RelativeSizeAxes = Axes.Both,
                            Size = new Vector2(0.7f),
                            Alpha = 0,
                            Blending = BlendingParameters.Additive
                        }
                    };
                }

                [BackgroundDependencyLoader]
                private void load(TextureStore textures, OsuColour colours)
                {
                    rim.Texture = textures.Get(@"Gameplay/taiko/taiko-drum-outer");
                    rimHit.Texture = textures.Get(@"Gameplay/taiko/taiko-drum-outer-hit");
                    centre.Texture = textures.Get(@"Gameplay/taiko/taiko-drum-inner");
                    centreHit.Texture = textures.Get(@"Gameplay/taiko/taiko-drum-inner-hit");

                    rimHit.Colour = colours.Blue;
                    centreHit.Colour = colours.Pink;
                }

                public bool OnPressed(KeyBindingPressEvent<TaikoAction> e)
                {
                    Drawable target = null;
                    Drawable back = null;

                    if (e.Action == CentreAction)
                    {
                        target = centreHit;
                        back = centre;
                    }
                    else if (e.Action == RimAction)
                    {
                        target = rimHit;
                        back = rim;
                    }

                    if (target != null)
                    {
                        const float scale_amount = 0.05f;
                        const float alpha_amount = 0.5f;

                        const float down_time = 40;
                        const float up_time = 1000;

                        back.ScaleTo(target.Scale.X - scale_amount, down_time, Easing.OutQuint)
                            .Then()
                            .ScaleTo(1, up_time, Easing.OutQuint);

                        target.Animate(
                            t => t.ScaleTo(target.Scale.X - scale_amount, down_time, Easing.OutQuint),
                            t => t.FadeTo(Math.Min(target.Alpha + alpha_amount, 1), down_time, Easing.OutQuint)
                        ).Then(
                            t => t.ScaleTo(1, up_time, Easing.OutQuint),
                            t => t.FadeOut(up_time, Easing.OutQuint)
                        );
                    }

                    return false;
                }

                public void OnReleased(KeyBindingReleaseEvent<TaikoAction> e)
                {
                }
            }
        }
    }
}