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Replace inline comment with actual explanation of what's happening

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Bartłomiej Dach 2023-08-21 07:27:02 +02:00
parent 8686b6b1e6
commit a942b6ff74
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1 changed files with 10 additions and 1 deletions
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11
osu.Game/Database/LegacyBeatmapExporter.cs
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@ -72,7 +72,16 @@ namespace osu.Game.Database
if (hitObject is not IHasPath hasPath) continue;
// Make sure the last control point is inherit type
// stable's hit object parsing expects the entire slider to use only one type of curve,
// and happens to use the last non-empty curve type read for the entire slider.
// this clear of the last control point type handles an edge case
// wherein the last control point of an otherwise-single-segment slider path has a different type than previous,
// which would lead to sliders being mangled when exported back to stable.
// normally, that would be handled by the `BezierConverter.ConvertToModernBezier()` call below,
// which outputs a slider path containing only Bezier control points,
// but a non-inherited last control point is (rightly) not considered to be starting a new segment,
// therefore it would fail to clear the `CountSegments() <= 1` check.
// by clearing explicitly we both fix the issue and avoid unnecessary conversions to Bezier.
if (hasPath.Path.ControlPoints.Count > 1)
hasPath.Path.ControlPoints[^1].Type = null;