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Fix overriding control points incorrectly

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This commit is contained in:
smoogipoo
2020-04-21 14:19:05 +09:00
parent ea77fc222d
commit 72fb34f82c
2 changed files with 20 additions and 15 deletions
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30
osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs
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@ -386,17 +386,10 @@ namespace osu.Game.Beatmaps.Formats
SampleVolume = sampleVolume,
CustomSampleBank = customSampleBank,
}, timingChange);
// To handle the scenario where a non-timing line shares the same time value as a subsequent timing line but
// appears earlier in the file, we buffer non-timing control points and rewrite them *after* control points from the timing line
// with the same time value (allowing them to overwrite as necessary).
//
// The expected outcome is that we prefer the non-timing line's adjustments over the timing line's adjustments when time is equal.
if (timingChange)
flushPendingPoints();
}
private readonly List<ControlPoint> pendingControlPoints = new List<ControlPoint>();
private readonly HashSet<Type> pendingControlPointTypes = new HashSet<Type>();
private double pendingControlPointsTime;
private void addControlPoint(double time, ControlPoint point, bool timingChange)
@ -405,21 +398,28 @@ namespace osu.Game.Beatmaps.Formats
flushPendingPoints();
if (timingChange)
{
beatmap.ControlPointInfo.Add(time, point);
return;
}
pendingControlPoints.Insert(0, point);
else
pendingControlPoints.Add(point);
pendingControlPoints.Add(point);
pendingControlPointsTime = time;
}
private void flushPendingPoints()
{
foreach (var p in pendingControlPoints)
beatmap.ControlPointInfo.Add(pendingControlPointsTime, p);
// Changes from non-timing-points are added to the end of the list (see addControlPoint()) and should override any changes from timing-points (added to the start of the list).
for (int i = pendingControlPoints.Count - 1; i >= 0; i--)
{
var type = pendingControlPoints[i].GetType();
if (pendingControlPointTypes.Contains(type))
continue;
pendingControlPointTypes.Add(type);
beatmap.ControlPointInfo.Add(pendingControlPointsTime, pendingControlPoints[i]);
}
pendingControlPoints.Clear();
pendingControlPointTypes.Clear();
}
private void handleHitObject(string line)