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Merge branch 'master' into mania-distance-snap-grid

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Dan Balasescu 2020-05-22 21:17:25 +09:00 committed by GitHub
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9 changed files with 143 additions and 17 deletions
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5
osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointPiece.cs
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@ -162,8 +162,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
if (ControlPoint == slider.Path.ControlPoints[0])
{
// Special handling for the head control point - the position of the slider changes which means the snapped position and time have to be taken into account
var result = snapProvider?.SnapScreenSpacePositionToValidTime(e.MousePosition);
Vector2 movementDelta = (result?.ScreenSpacePosition ?? e.MousePosition) - slider.Position;
var result = snapProvider?.SnapScreenSpacePositionToValidTime(e.ScreenSpaceMousePosition);
Vector2 movementDelta = Parent.ToLocalSpace(result?.ScreenSpacePosition ?? e.ScreenSpaceMousePosition) - slider.Position;
slider.Position += movementDelta;
slider.StartTime = result?.Time ?? slider.StartTime;

73
osu.Game.Tests/NonVisual/BarLineGeneratorTest.cs Normal file
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@ -0,0 +1,73 @@
// 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 NUnit.Framework;
using osu.Framework.Utils;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Beatmaps.Timing;
using osu.Game.Rulesets.Objects;
namespace osu.Game.Tests.NonVisual
{
public class BarLineGeneratorTest
{
[Test]
public void TestRoundingErrorCompensation()
{
// The aim of this test is to make sure bar line generation compensates for floating-point errors.
// The premise of the test is that we have a single timing point that should result in bar lines
// that start at a time point that is a whole number every seventh beat.
// The fact it's every seventh beat is important - it's a number indivisible by 2, which makes
// it susceptible to rounding inaccuracies. In fact this was originally spotted in cases of maps
// that met exactly this criteria.
const int beat_length_numerator = 2000;
const int beat_length_denominator = 7;
const TimeSignatures signature = TimeSignatures.SimpleQuadruple;
var beatmap = new Beatmap
{
HitObjects = new List<HitObject>
{
new HitObject { StartTime = 0 },
new HitObject { StartTime = 120_000 }
},
ControlPointInfo = new ControlPointInfo()
};
beatmap.ControlPointInfo.Add(0, new TimingControlPoint
{
BeatLength = (double)beat_length_numerator / beat_length_denominator,
TimeSignature = signature
});
var barLines = new BarLineGenerator<BarLine>(beatmap).BarLines;
for (int i = 0; i * beat_length_denominator < barLines.Count; i++)
{
var barLine = barLines[i * beat_length_denominator];
var expectedTime = beat_length_numerator * (int)signature * i;
// every seventh bar's start time should be at least greater than the whole number we expect.
// It cannot be less, as that can affect overlapping scroll algorithms
// (the previous timing point might be chosen incorrectly if this is not the case)
Assert.GreaterOrEqual(barLine.StartTime, expectedTime);
// on the other side, make sure we don't stray too far from the expected time either.
Assert.IsTrue(Precision.AlmostEquals(barLine.StartTime, expectedTime));
// check major/minor lines for good measure too
Assert.AreEqual(i % (int)signature == 0, barLine.Major);
}
}
private class BarLine : IBarLine
{
public double StartTime { get; set; }
public bool Major { get; set; }
}
}
}

18
osu.Game.Tests/ScrollAlgorithms/SequentialScrollTest.cs
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@ -29,8 +29,22 @@ namespace osu.Game.Tests.ScrollAlgorithms
[Test]
public void TestDisplayStartTime()
{
// Sequential scroll algorithm approximates the start time
// This should be fixed in the future
// easy cases - time range adjusted for velocity fits within control point duration
Assert.AreEqual(2500, algorithm.GetDisplayStartTime(5000, 0, 2500, 1)); // 5000 - (2500 / 1)
Assert.AreEqual(13750, algorithm.GetDisplayStartTime(15000, 0, 2500, 1)); // 15000 - (2500 / 2)
Assert.AreEqual(20000, algorithm.GetDisplayStartTime(25000, 0, 2500, 1)); // 25000 - (2500 / 0.5)
// hard case - time range adjusted for velocity exceeds control point duration
// 1st multiplier point takes 10000 / 2500 = 4 scroll lengths
// 2nd multiplier point takes 10000 / (2500 / 2) = 8 scroll lengths
// 3rd multiplier point takes 2500 / (2500 * 2) = 0.5 scroll lengths up to hitobject start
// absolute position of the hitobject = 1000 * (4 + 8 + 0.5) = 12500
// minus one scroll length allowance = 12500 - 1000 = 11500 = 11.5 [scroll lengths]
// therefore the start time lies within the second multiplier point (because 11.5 < 4 + 8)
// its exact time position is = 10000 + 7.5 * (2500 / 2) = 19375
Assert.AreEqual(19375, algorithm.GetDisplayStartTime(22500, 0, 2500, 1000));
}
[Test]

42
osu.Game.Tests/Visual/Gameplay/TestSceneScrollingHitObjects.cs
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@ -16,6 +16,7 @@ using osu.Game.Configuration;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Drawables;
using osu.Game.Rulesets.Scoring;
using osu.Game.Rulesets.Timing;
using osu.Game.Rulesets.UI.Scrolling;
using osuTK;
@ -77,19 +78,18 @@ namespace osu.Game.Tests.Visual.Gameplay
}
};
setUpHitObjects();
hitObjectSpawnDelegate?.Cancel();
});
private void setUpHitObjects()
private void setUpHitObjects() => AddStep("set up hit objects", () =>
{
scrollContainers.ForEach(c => c.ControlPoints.Add(new MultiplierControlPoint(0)));
for (int i = spawn_rate / 2; i <= time_range; i += spawn_rate)
addHitObject(Time.Current + i);
hitObjectSpawnDelegate?.Cancel();
hitObjectSpawnDelegate = Scheduler.AddDelayed(() => addHitObject(Time.Current + time_range), spawn_rate, true);
}
});
private IList<MultiplierControlPoint> testControlPoints => new List<MultiplierControlPoint>
{
@ -101,6 +101,8 @@ namespace osu.Game.Tests.Visual.Gameplay
[Test]
public void TestScrollAlgorithms()
{
setUpHitObjects();
AddStep("constant scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Constant));
AddStep("overlapping scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Overlapping));
AddStep("sequential scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Sequential));
@ -113,6 +115,8 @@ namespace osu.Game.Tests.Visual.Gameplay
[Test]
public void TestConstantScrollLifetime()
{
setUpHitObjects();
AddStep("set constant scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Constant));
// scroll container time range must be less than the rate of spawning hitobjects
// otherwise the hitobjects will spawn already partly visible on screen and look wrong
@ -122,14 +126,40 @@ namespace osu.Game.Tests.Visual.Gameplay
[Test]
public void TestSequentialScrollLifetime()
{
setUpHitObjects();
AddStep("set sequential scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Sequential));
AddStep("set time range", () => scrollContainers.ForEach(c => c.TimeRange = time_range / 2.0));
AddStep("add control points", () => addControlPoints(testControlPoints, Time.Current));
}
[Test]
public void TestSlowSequentialScroll()
{
AddStep("set sequential scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Sequential));
AddStep("set time range", () => scrollContainers.ForEach(c => c.TimeRange = time_range));
AddStep("add control points", () => addControlPoints(
new List<MultiplierControlPoint>
{
new MultiplierControlPoint { Velocity = 0.1 }
},
Time.Current + time_range));
// All of the hit objects added below should be immediately visible on screen
AddStep("add hit objects", () =>
{
for (int i = 0; i < 20; ++i)
{
addHitObject(Time.Current + time_range * (2 + 0.1 * i));
}
});
}
[Test]
public void TestOverlappingScrollLifetime()
{
setUpHitObjects();
AddStep("set overlapping scroll", () => setScrollAlgorithm(ScrollVisualisationMethod.Overlapping));
AddStep("set time range", () => scrollContainers.ForEach(c => c.TimeRange = time_range / 2.0));
AddStep("add control points", () => addControlPoints(testControlPoints, Time.Current));
@ -221,7 +251,7 @@ namespace osu.Game.Tests.Visual.Gameplay
private class TestDrawableControlPoint : DrawableHitObject<HitObject>
{
public TestDrawableControlPoint(ScrollingDirection direction, double time)
: base(new HitObject { StartTime = time })
: base(new HitObject { StartTime = time, HitWindows = HitWindows.Empty })
{
Origin = Anchor.Centre;
@ -252,7 +282,7 @@ namespace osu.Game.Tests.Visual.Gameplay
private class TestDrawableHitObject : DrawableHitObject<HitObject>
{
public TestDrawableHitObject(double time)
: base(new HitObject { StartTime = time })
: base(new HitObject { StartTime = time, HitWindows = HitWindows.Empty })
{
Origin = Anchor.Custom;
OriginPosition = new Vector2(75 / 4.0f);

2
osu.Game/Rulesets/Edit/PlacementBlueprint.cs
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@ -64,9 +64,7 @@ namespace osu.Game.Rulesets.Edit
/// <param name="commitStart">Whether this call is committing a value for HitObject.StartTime and continuing with further adjustments.</param>
protected void BeginPlacement(bool commitStart = false)
{
// applies snapping to above time
placementHandler.BeginPlacement(HitObject);
PlacementActive |= commitStart;
}

11
osu.Game/Rulesets/Objects/BarLineGenerator.cs
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@ -1,6 +1,7 @@
// 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 System.Linq;
using osu.Framework.Utils;
@ -46,6 +47,16 @@ namespace osu.Game.Rulesets.Objects
for (double t = currentTimingPoint.Time; Precision.DefinitelyBigger(endTime, t); t += barLength, currentBeat++)
{
var roundedTime = Math.Round(t, MidpointRounding.AwayFromZero);
// in the case of some bar lengths, rounding errors can cause t to be slightly less than
// the expected whole number value due to floating point inaccuracies.
// if this is the case, apply rounding.
if (Precision.AlmostEquals(t, roundedTime))
{
t = roundedTime;
}
BarLines.Add(new TBarLine
{
StartTime = t,

3
osu.Game/Rulesets/UI/Scrolling/Algorithms/SequentialScrollAlgorithm.cs
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@ -22,8 +22,7 @@ namespace osu.Game.Rulesets.UI.Scrolling.Algorithms
public double GetDisplayStartTime(double originTime, float offset, double timeRange, float scrollLength)
{
double adjustedTime = TimeAt(-offset, originTime, timeRange, scrollLength);
return adjustedTime - timeRange - 1000;
return TimeAt(-(scrollLength + offset), originTime, timeRange, scrollLength);
}
public float GetLength(double startTime, double endTime, double timeRange, float scrollLength)

4
osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
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@ -181,8 +181,8 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
[Resolved]
private IBeatSnapProvider beatSnapProvider { get; set; }
public SnapResult SnapScreenSpacePositionToValidTime(Vector2 position) =>
new SnapResult(position, beatSnapProvider.SnapTime(getTimeFromPosition(Content.ToLocalSpace(position))));
public SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition) =>
new SnapResult(screenSpacePosition, beatSnapProvider.SnapTime(getTimeFromPosition(Content.ToLocalSpace(screenSpacePosition))));
private double getTimeFromPosition(Vector2 localPosition) =>
(localPosition.X / Content.DrawWidth) * track.Length;

2
osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineHitObjectBlueprint.cs
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@ -282,7 +282,7 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
case IHasRepeats repeatHitObject:
// find the number of repeats which can fit in the requested time.
var lengthOfOneRepeat = repeatHitObject.Duration / (repeatHitObject.RepeatCount + 1);
var proposedCount = Math.Max(0, (int)((time - hitObject.StartTime) / lengthOfOneRepeat) - 1);
var proposedCount = Math.Max(0, (int)Math.Round((time - hitObject.StartTime) / lengthOfOneRepeat) - 1);
if (proposedCount == repeatHitObject.RepeatCount)
return;