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osu-lazer/osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs

171 lines
5.3 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 System.Collections.Generic;
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Extensions.IEnumerableExtensions;
using osu.Framework.Graphics;
using osu.Framework.Input;
using osu.Framework.Input.Events;
using osu.Game.Graphics;
using osu.Game.Rulesets.Edit;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
using osuTK;
using osuTK.Input;
namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
{
public class SliderPlacementBlueprint : PlacementBlueprint
{
public new Objects.Slider HitObject => (Objects.Slider)base.HitObject;
private SliderBodyPiece bodyPiece;
private HitCirclePiece headCirclePiece;
private HitCirclePiece tailCirclePiece;
private readonly List<Segment> segments = new List<Segment>();
private Vector2 cursor;
private InputManager inputManager;
private PlacementState state;
[Resolved(CanBeNull = true)]
private HitObjectComposer composer { get; set; }
public SliderPlacementBlueprint()
: base(new Objects.Slider())
{
RelativeSizeAxes = Axes.Both;
segments.Add(new Segment(Vector2.Zero));
}
[BackgroundDependencyLoader]
private void load(OsuColour colours)
{
InternalChildren = new Drawable[]
{
bodyPiece = new SliderBodyPiece(),
headCirclePiece = new HitCirclePiece(),
tailCirclePiece = new HitCirclePiece(),
new PathControlPointVisualiser(HitObject) { ControlPointsChanged = _ => updateSlider() },
};
setState(PlacementState.Initial);
}
protected override void LoadComplete()
{
base.LoadComplete();
inputManager = GetContainingInputManager();
}
public override void UpdatePosition(Vector2 screenSpacePosition)
{
switch (state)
{
case PlacementState.Initial:
HitObject.Position = ToLocalSpace(screenSpacePosition);
break;
case PlacementState.Body:
// The given screen-space position may have been externally snapped, but the unsnapped position from the input manager
// is used instead since snapping control points doesn't make much sense
cursor = ToLocalSpace(inputManager.CurrentState.Mouse.Position) - HitObject.Position;
break;
}
}
protected override bool OnClick(ClickEvent e)
{
switch (state)
{
case PlacementState.Initial:
beginCurve();
break;
case PlacementState.Body:
switch (e.Button)
{
case MouseButton.Left:
segments.Last().ControlPoints.Add(cursor);
break;
}
break;
}
return true;
}
protected override bool OnMouseUp(MouseUpEvent e)
{
if (state == PlacementState.Body && e.Button == MouseButton.Right)
endCurve();
return base.OnMouseUp(e);
}
protected override bool OnDoubleClick(DoubleClickEvent e)
{
segments.Add(new Segment(segments[segments.Count - 1].ControlPoints.Last()));
return true;
}
private void beginCurve()
{
BeginPlacement();
setState(PlacementState.Body);
}
private void endCurve()
{
updateSlider();
EndPlacement();
}
protected override void Update()
{
base.Update();
updateSlider();
}
private void updateSlider()
{
Vector2[] newControlPoints = segments.SelectMany(s => s.ControlPoints).Concat(cursor.Yield()).ToArray();
var unsnappedPath = new SliderPath(newControlPoints.Length > 2 ? PathType.Bezier : PathType.Linear, newControlPoints);
var snappedDistance = composer?.GetSnappedDistanceFromDistance(HitObject.StartTime, (float)unsnappedPath.Distance) ?? (float)unsnappedPath.Distance;
HitObject.Path = new SliderPath(unsnappedPath.Type, newControlPoints, snappedDistance);
bodyPiece.UpdateFrom(HitObject);
headCirclePiece.UpdateFrom(HitObject.HeadCircle);
tailCirclePiece.UpdateFrom(HitObject.TailCircle);
}
private void setState(PlacementState newState)
{
state = newState;
}
private enum PlacementState
{
Initial,
Body,
}
private class Segment
{
public readonly List<Vector2> ControlPoints = new List<Vector2>();
public Segment(Vector2 offset)
{
ControlPoints.Add(offset);
}
}
}
}