diff --git a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs new file mode 100644 index 0000000000..337b8de92e --- /dev/null +++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs @@ -0,0 +1,79 @@ +// Copyright (c) ppy Pty Ltd . Licensed under the MIT Licence. +// See the LICENCE file in the repository root for full licence text. + +using System.Collections.Generic; +using System.Linq; +using osu.Framework.Graphics; +using osu.Framework.Graphics.Containers; +using osu.Framework.Graphics.Lines; +using osu.Game.Rulesets.Catch.Objects; +using osu.Game.Rulesets.UI.Scrolling; +using osuTK; + +namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components +{ + public class ScrollingPath : CompositeDrawable + { + private readonly Path drawablePath; + + private readonly List<(double Distance, float X)> vertices = new List<(double, float)>(); + + public ScrollingPath() + { + Anchor = Anchor.BottomLeft; + + InternalChildren = new Drawable[] + { + drawablePath = new SmoothPath + { + PathRadius = 2, + Alpha = 0.5f + }, + }; + } + + public void UpdatePositionFrom(ScrollingHitObjectContainer hitObjectContainer, CatchHitObject hitObject) + { + X = hitObject.OriginalX; + Y = hitObjectContainer.PositionAtTime(hitObject.StartTime); + } + + public void UpdatePathFrom(ScrollingHitObjectContainer hitObjectContainer, JuiceStream hitObject) + { + double distanceToYFactor = -hitObjectContainer.LengthAtTime(hitObject.StartTime, hitObject.StartTime + 1 / hitObject.Velocity); + + computeDistanceXs(hitObject); + drawablePath.Vertices = vertices + .Select(v => new Vector2(v.X, (float)(v.Distance * distanceToYFactor))) + .ToArray(); + drawablePath.OriginPosition = drawablePath.PositionInBoundingBox(Vector2.Zero); + } + + private void computeDistanceXs(JuiceStream hitObject) + { + vertices.Clear(); + + var sliderVertices = new List(); + hitObject.Path.GetPathToProgress(sliderVertices, 0, 1); + + if (sliderVertices.Count == 0) + return; + + double distance = 0; + Vector2 lastPosition = Vector2.Zero; + + for (int repeat = 0; repeat < hitObject.RepeatCount + 1; repeat++) + { + foreach (var position in sliderVertices) + { + distance += Vector2.Distance(lastPosition, position); + lastPosition = position; + + vertices.Add((distance, position.X)); + } + + sliderVertices.Reverse(); + } + } + } +}