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Merge pull request #12443 from peppy/fix-slider-scale-crash

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Fix div-by-zero when scaling a 1-dimensional slider
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Dan Balasescu 2021-04-16 17:31:42 +09:00 committed by GitHub
commit 7648d6f7fb
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2 changed files with 76 additions and 2 deletions
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72
osu.Game.Rulesets.Osu.Tests/Editor/TestSliderScaling.cs Normal file
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@ -0,0 +1,72 @@
// 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.Linq;
using NUnit.Framework;
using osu.Framework.Testing;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Rulesets.Osu.UI;
using osu.Game.Screens.Edit.Compose.Components;
using osu.Game.Tests.Beatmaps;
using osuTK;
using osuTK.Input;
namespace osu.Game.Rulesets.Osu.Tests.Editor
{
[TestFixture]
public class TestSliderScaling : TestSceneOsuEditor
{
private OsuPlayfield playfield;
protected override IBeatmap CreateBeatmap(RulesetInfo ruleset) => new TestBeatmap(Ruleset.Value, false);
public override void SetUpSteps()
{
base.SetUpSteps();
AddStep("get playfield", () => playfield = Editor.ChildrenOfType<OsuPlayfield>().First());
AddStep("seek to first timing point", () => EditorClock.Seek(Beatmap.Value.Beatmap.ControlPointInfo.TimingPoints.First().Time));
}
[Test]
public void TestScalingLinearSlider()
{
Slider slider = null;
AddStep("Add slider", () =>
{
slider = new Slider { StartTime = EditorClock.CurrentTime, Position = new Vector2(300) };
PathControlPoint[] points =
{
new PathControlPoint(new Vector2(0), PathType.Linear),
new PathControlPoint(new Vector2(100, 0)),
};
slider.Path = new SliderPath(points);
EditorBeatmap.Add(slider);
});
AddAssert("ensure object placed", () => EditorBeatmap.HitObjects.Count == 1);
moveMouse(new Vector2(300));
AddStep("select slider", () => InputManager.Click(MouseButton.Left));
double distanceBefore = 0;
AddStep("store distance", () => distanceBefore = slider.Path.Distance);
AddStep("move mouse to handle", () => InputManager.MoveMouseTo(Editor.ChildrenOfType<SelectionBoxDragHandle>().Skip(1).First()));
AddStep("begin drag", () => InputManager.PressButton(MouseButton.Left));
moveMouse(new Vector2(300, 300));
AddStep("end drag", () => InputManager.ReleaseButton(MouseButton.Left));
AddAssert("slider length shrunk", () => slider.Path.Distance < distanceBefore);
}
private void moveMouse(Vector2 pos) =>
AddStep($"move mouse to {pos}", () => InputManager.MoveMouseTo(playfield.ToScreenSpace(pos)));
}
}

6
osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs
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@ -205,10 +205,12 @@ namespace osu.Game.Rulesets.Osu.Edit
Quad sliderQuad = getSurroundingQuad(slider.Path.ControlPoints.Select(p => p.Position.Value));
// Limit minimum distance between control points after scaling to almost 0. Less than 0 causes the slider to flip, exactly 0 causes a crash through division by 0.
// Limit minimum distance between control points after scaling to almost 0. Less than 0 causes the slider to flip, exactly 0 causes a crash through division by 0.
scale = Vector2.ComponentMax(new Vector2(Precision.FLOAT_EPSILON), sliderQuad.Size + scale) - sliderQuad.Size;
Vector2 pathRelativeDeltaScale = new Vector2(1 + scale.X / sliderQuad.Width, 1 + scale.Y / sliderQuad.Height);
Vector2 pathRelativeDeltaScale = new Vector2(
sliderQuad.Width == 0 ? 0 : 1 + scale.X / sliderQuad.Width,
sliderQuad.Height == 0 ? 0 : 1 + scale.Y / sliderQuad.Height);
Queue<Vector2> oldControlPoints = new Queue<Vector2>();