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Add basic structure for new follow point renderer
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smoogipoo
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315
osu.Game.Rulesets.Osu.Tests/TestSceneFollowPoints.cs
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315
osu.Game.Rulesets.Osu.Tests/TestSceneFollowPoints.cs
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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using JetBrains.Annotations;
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using NUnit.Framework;
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using osu.Framework.Extensions.Color4Extensions;
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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.Effects;
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using osu.Framework.Graphics.Shapes;
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using osu.Game.Beatmaps;
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using osu.Game.Beatmaps.ControlPoints;
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using osu.Game.Rulesets.Objects.Drawables;
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using osu.Game.Rulesets.Objects.Types;
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using osu.Game.Rulesets.Osu.Objects;
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using osu.Game.Rulesets.Osu.Objects.Drawables;
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using osu.Game.Skinning;
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using osu.Game.Tests.Visual;
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using osuTK;
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using osuTK.Graphics;
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namespace osu.Game.Rulesets.Osu.Tests
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{
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public class TestSceneFollowPoints : OsuTestScene
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{
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private Container<DrawableHitObject> hitObjectContainer;
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private FollowPointRenderer followPointRenderer;
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[SetUp]
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public void Setup() => Schedule(() =>
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{
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Children = new Drawable[]
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{
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hitObjectContainer = new Container<DrawableHitObject> { RelativeSizeAxes = Axes.Both },
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followPointRenderer = new FollowPointRenderer { RelativeSizeAxes = Axes.Both }
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};
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});
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[Test]
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public void TestAddSingleHitObject()
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{
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addObject(new HitCircle { Position = new Vector2(100, 100) });
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}
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[Test]
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public void TestRemoveSingleHitObject()
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{
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}
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[Test]
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public void TestAddMultipleHitObjects()
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{
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}
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[Test]
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public void TestRemoveEndObject()
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{
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}
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[Test]
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public void TestRemoveStartObject()
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{
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}
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[Test]
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public void TestRemoveMiddleObject()
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{
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}
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private void addObject(HitCircle hitCircle, Action<DrawableHitObject> func = null)
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{
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AddStep("add hitobject", () =>
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{
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hitCircle.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
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var drawableCircle = new DrawableHitCircle(hitCircle);
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hitObjectContainer.Add(drawableCircle);
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followPointRenderer.AddFollowPoints(drawableCircle);
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func?.Invoke(drawableCircle);
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});
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}
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private void removeObject(Func<DrawableHitObject> func)
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{
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AddStep("remove hitobject", () =>
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{
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var drawableObject = func?.Invoke();
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hitObjectContainer.Remove(drawableObject);
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followPointRenderer.RemoveFollowPoints(drawableObject);
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});
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}
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private class FollowPointRenderer : CompositeDrawable
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{
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/// <summary>
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/// Adds the <see cref="FollowPoint"/>s around a <see cref="DrawableHitObject"/>.
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/// This includes <see cref="FollowPoint"/>s leading into <paramref name="hitObject"/>, and <see cref="FollowPoint"/>s exiting <paramref name="hitObject"/>.
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/// </summary>
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/// <param name="hitObject">The <see cref="DrawableHitObject"/> to add <see cref="FollowPoint"/>s for.</param>
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public void AddFollowPoints(DrawableHitObject hitObject)
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{
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var startGroup = new FollowPointGroup(hitObject);
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AddInternal(startGroup);
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// Groups are sorted by their start time when added, so the index can be used to post-process other surrounding groups
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int startIndex = IndexOfInternal(startGroup);
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if (startIndex < InternalChildren.Count - 1)
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{
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// h1 -> -> -> h2
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// hitObject nextGroup
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var nextGroup = (FollowPointGroup)InternalChildren[startIndex + 1];
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startGroup.End = nextGroup.Start;
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}
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if (startIndex > 0)
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{
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// h1 -> -> -> h2
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// prevGroup hitObject
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var previousGroup = (FollowPointGroup)InternalChildren[startIndex - 1];
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previousGroup.End = startGroup.Start;
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}
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}
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/// <summary>
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/// Removes the <see cref="FollowPoint"/>s around a <see cref="DrawableHitObject"/>.
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/// This includes <see cref="FollowPoint"/>s leading into <paramref name="hitObject"/>, and <see cref="FollowPoint"/>s exiting <paramref name="hitObject"/>.
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/// </summary>
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/// <param name="hitObject">The <see cref="DrawableHitObject"/> to remove <see cref="FollowPoint"/>s for.</param>
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public void RemoveFollowPoints(DrawableHitObject hitObject)
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{
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var groups = findGroups(hitObject);
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// Regardless of the position of the hitobject in the beatmap, there will always be a group leading from the hitobject
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RemoveInternal(groups.start);
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if (groups.end != null)
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{
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// When there were two groups referencing the same hitobject, merge them by updating the end group to point to the new end (the start group was already removed)
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groups.end.End = groups.start.End;
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}
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}
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/// <summary>
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/// Finds the <see cref="FollowPointGroup"/>s with <paramref name="hitObject"/> as the start and end <see cref="DrawableHitObject"/>s.
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/// </summary>
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/// <param name="hitObject">The <see cref="DrawableHitObject"/> to find the relevant <see cref="FollowPointGroup"/> of.</param>
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/// <returns>A tuple containing the end group (the <see cref="FollowPointGroup"/> where <paramref name="hitObject"/> is the end of),
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/// and the start group (the <see cref="FollowPointGroup"/> where <paramref name="hitObject"/> is the start of).</returns>
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private (FollowPointGroup start, FollowPointGroup end) findGroups(DrawableHitObject hitObject)
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{
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// endGroup startGroup
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// h1 -> -> -> -> -> h2 -> -> -> -> -> h3
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// hitObject
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FollowPointGroup startGroup = null; // The group which the hitobject is the start in
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FollowPointGroup endGroup = null; // The group which the hitobject is the end in
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int startIndex = 0;
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for (; startIndex < InternalChildren.Count; startIndex++)
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{
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var group = (FollowPointGroup)InternalChildren[startIndex];
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if (group.Start == hitObject)
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{
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startGroup = group;
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break;
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}
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}
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if (startIndex > 0)
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endGroup = (FollowPointGroup)InternalChildren[startIndex - 1];
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return (startGroup, endGroup);
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}
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protected override int Compare(Drawable x, Drawable y)
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{
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var groupX = (FollowPointGroup)x;
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var groupY = (FollowPointGroup)y;
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return groupX.Start.HitObject.StartTime.CompareTo(groupY.Start.HitObject.StartTime);
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}
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}
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private class FollowPointGroup : CompositeDrawable
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{
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private const int spacing = 32;
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private const double preempt = 800;
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public FollowPointGroup(DrawableHitObject start)
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{
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Start = start;
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}
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/// <summary>
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/// The <see cref="DrawableHitObject"/> which <see cref="FollowPoint"/>s will exit from.
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/// </summary>
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[NotNull]
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public DrawableHitObject Start { get; }
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private DrawableHitObject end;
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/// <summary>
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/// The <see cref="DrawableHitObject"/> which <see cref="FollowPoint"/>s will enter.
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/// </summary>
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[CanBeNull]
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public DrawableHitObject End
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{
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get => end;
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set
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{
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end = value;
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refreshFollowPoints();
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}
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}
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private void refreshFollowPoints()
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{
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ClearInternal();
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if (End == null)
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return;
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OsuHitObject osuStart = (OsuHitObject)Start.HitObject;
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OsuHitObject osuEnd = (OsuHitObject)End.HitObject;
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if (osuEnd.NewCombo)
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return;
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if (osuStart is Spinner || osuEnd is Spinner)
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return;
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Vector2 startPosition = osuStart.EndPosition;
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Vector2 endPosition = osuEnd.Position;
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double startTime = (osuStart as IHasEndTime)?.EndTime ?? osuStart.StartTime;
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double endTime = osuEnd.StartTime;
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Vector2 distanceVector = endPosition - startPosition;
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int distance = (int)distanceVector.Length;
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float rotation = (float)(Math.Atan2(distanceVector.Y, distanceVector.X) * (180 / Math.PI));
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double duration = endTime - startTime;
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for (int d = (int)(spacing * 1.5); d < distance - spacing; d += spacing)
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{
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float fraction = (float)d / distance;
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Vector2 pointStartPosition = startPosition + (fraction - 0.1f) * distanceVector;
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Vector2 pointEndPosition = startPosition + fraction * distanceVector;
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double fadeOutTime = startTime + fraction * duration;
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double fadeInTime = fadeOutTime - preempt;
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FollowPoint fp;
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AddInternal(fp = new FollowPoint
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{
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Position = pointStartPosition,
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Rotation = rotation,
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Alpha = 0,
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Scale = new Vector2(1.5f * osuEnd.Scale),
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});
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using (fp.BeginAbsoluteSequence(fadeInTime))
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{
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fp.FadeIn(osuEnd.TimeFadeIn);
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fp.ScaleTo(osuEnd.Scale, osuEnd.TimeFadeIn, Easing.Out);
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fp.MoveTo(pointEndPosition, osuEnd.TimeFadeIn, Easing.Out);
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fp.Delay(fadeOutTime - fadeInTime).FadeOut(osuEnd.TimeFadeIn);
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}
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fp.Expire(true);
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}
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}
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}
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private class FollowPoint : CompositeDrawable
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{
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private const float width = 8;
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public override bool RemoveWhenNotAlive => false;
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public FollowPoint()
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{
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Origin = Anchor.Centre;
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InternalChild = new SkinnableDrawable(new OsuSkinComponent(OsuSkinComponents.FollowPoint), _ => new Container
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{
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Masking = true,
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AutoSizeAxes = Axes.Both,
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CornerRadius = width / 2,
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EdgeEffect = new EdgeEffectParameters
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{
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Type = EdgeEffectType.Glow,
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Colour = Color4.White.Opacity(0.2f),
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Radius = 4,
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},
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Child = new Box
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{
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Size = new Vector2(width),
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Blending = BlendingParameters.Additive,
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Origin = Anchor.Centre,
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Anchor = Anchor.Centre,
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Alpha = 0.5f,
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}
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}, confineMode: ConfineMode.NoScaling);
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}
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}
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}
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}
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