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osu-lazer/osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSliderRepeat.cs
2021-06-02 11:46:28 +09:00

168 lines
5.6 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 System;
using System.Collections.Generic;
using JetBrains.Annotations;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Utils;
using osu.Game.Rulesets.Objects.Drawables;
using osu.Game.Rulesets.Osu.Skinning.Default;
using osu.Game.Skinning;
using osuTK;
namespace osu.Game.Rulesets.Osu.Objects.Drawables
{
public class DrawableSliderRepeat : DrawableOsuHitObject, ITrackSnaking, IHasMainCirclePiece
{
public new SliderRepeat HitObject => (SliderRepeat)base.HitObject;
[CanBeNull]
public Slider Slider => DrawableSlider?.HitObject;
protected DrawableSlider DrawableSlider => (DrawableSlider)ParentHitObject;
private double animDuration;
public SkinnableDrawable CirclePiece { get; private set; }
public ReverseArrowPiece Arrow { get; private set; }
private Drawable scaleContainer;
public override bool DisplayResult => false;
public DrawableSliderRepeat()
: base(null)
{
}
public DrawableSliderRepeat(SliderRepeat sliderRepeat)
: base(sliderRepeat)
{
}
[BackgroundDependencyLoader]
private void load()
{
Origin = Anchor.Centre;
Size = new Vector2(OsuHitObject.OBJECT_RADIUS * 2);
InternalChild = scaleContainer = new Container
{
RelativeSizeAxes = Axes.Both,
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
Children = new Drawable[]
{
// no default for this; only visible in legacy skins.
CirclePiece = new SkinnableDrawable(new OsuSkinComponent(OsuSkinComponents.SliderTailHitCircle), _ => Empty())
{
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
},
Arrow = new ReverseArrowPiece(),
}
};
ScaleBindable.BindValueChanged(scale => scaleContainer.Scale = new Vector2(scale.NewValue));
}
protected override void OnApply()
{
base.OnApply();
Position = HitObject.Position - DrawableSlider.Position;
}
protected override void CheckForResult(bool userTriggered, double timeOffset)
{
if (HitObject.StartTime <= Time.Current)
ApplyResult(r => r.Type = DrawableSlider.Tracking.Value ? r.Judgement.MaxResult : r.Judgement.MinResult);
}
protected override void UpdateInitialTransforms()
{
animDuration = Math.Min(300, HitObject.SpanDuration);
this.Animate(
d => d.FadeIn(animDuration),
d => d.ScaleTo(0.5f).ScaleTo(1f, animDuration * 2, Easing.OutElasticHalf)
);
}
protected override void UpdateHitStateTransforms(ArmedState state)
{
base.UpdateHitStateTransforms(state);
switch (state)
{
case ArmedState.Idle:
this.Delay(HitObject.TimePreempt).FadeOut();
break;
case ArmedState.Miss:
this.FadeOut(animDuration);
break;
case ArmedState.Hit:
this.FadeOut(animDuration, Easing.Out);
const float final_scale = 1.5f;
Arrow.ScaleTo(Scale * final_scale, animDuration, Easing.Out);
CirclePiece.ScaleTo(Scale * final_scale, animDuration, Easing.Out);
break;
}
}
private bool hasRotation;
public void UpdateSnakingPosition(Vector2 start, Vector2 end)
{
// When the repeat is hit, the arrow should fade out on spot rather than following the slider
if (IsHit) return;
bool isRepeatAtEnd = HitObject.RepeatIndex % 2 == 0;
List<Vector2> curve = ((PlaySliderBody)DrawableSlider.Body.Drawable).CurrentCurve;
Position = isRepeatAtEnd ? end : start;
if (curve.Count < 2)
return;
int searchStart = isRepeatAtEnd ? curve.Count - 1 : 0;
int direction = isRepeatAtEnd ? -1 : 1;
Vector2 aimRotationVector = Vector2.Zero;
// find the next vector2 in the curve which is not equal to our current position to infer a rotation.
for (int i = searchStart; i >= 0 && i < curve.Count; i += direction)
{
if (Precision.AlmostEquals(curve[i], Position))
continue;
aimRotationVector = curve[i];
break;
}
float aimRotation = MathUtils.RadiansToDegrees(MathF.Atan2(aimRotationVector.Y - Position.Y, aimRotationVector.X - Position.X));
while (Math.Abs(aimRotation - Arrow.Rotation) > 180)
aimRotation += aimRotation < Arrow.Rotation ? 360 : -360;
if (!hasRotation)
{
Arrow.Rotation = aimRotation;
hasRotation = true;
}
else
{
// If we're already snaking, interpolate to smooth out sharp curves (linear sliders, mainly).
Arrow.Rotation = Interpolation.ValueAt(Math.Clamp(Clock.ElapsedFrameTime, 0, 100), Arrow.Rotation, aimRotation, 0, 50, Easing.OutQuint);
}
}
}
}