From 59655a18307d018968710e0abc9584ef88ab90dc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bart=C5=82omiej=20Dach?= Date: Mon, 14 Oct 2024 14:48:09 +0200 Subject: [PATCH] Fix flip operations sometimes not preserving selection Closes https://github.com/ppy/osu/issues/30250. --- .../Edit/ManiaSelectionHandler.cs | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/osu.Game.Rulesets.Mania/Edit/ManiaSelectionHandler.cs b/osu.Game.Rulesets.Mania/Edit/ManiaSelectionHandler.cs index 7e0991a4d4..74e616ac3f 100644 --- a/osu.Game.Rulesets.Mania/Edit/ManiaSelectionHandler.cs +++ b/osu.Game.Rulesets.Mania/Edit/ManiaSelectionHandler.cs @@ -54,9 +54,8 @@ public override bool HandleFlip(Direction direction, bool flipOverOrigin) int firstColumn = flipOverOrigin ? 0 : selectedObjects.Min(ho => ho.Column); int lastColumn = flipOverOrigin ? (int)EditorBeatmap.BeatmapInfo.Difficulty.CircleSize - 1 : selectedObjects.Max(ho => ho.Column); - EditorBeatmap.PerformOnSelection(hitObject => + performOnSelection(maniaObject => { - var maniaObject = (ManiaHitObject)hitObject; maniaPlayfield.Remove(maniaObject); maniaObject.Column = firstColumn + (lastColumn - maniaObject.Column); maniaPlayfield.Add(maniaObject); @@ -71,7 +70,7 @@ public override bool HandleFlip(Direction direction, bool flipOverOrigin) double selectionStartTime = selectedObjects.Min(ho => ho.StartTime); double selectionEndTime = selectedObjects.Max(ho => ho.GetEndTime()); - EditorBeatmap.PerformOnSelection(hitObject => + performOnSelection(hitObject => { hitObject.StartTime = selectionStartTime + (selectionEndTime - hitObject.GetEndTime()); }); @@ -117,14 +116,21 @@ private void performColumnMovement(int lastColumn, MoveSelectionEvent columnDelta = Math.Clamp(columnDelta, -minColumn, maniaPlayfield.TotalColumns - 1 - maxColumn); - EditorBeatmap.PerformOnSelection(h => + performOnSelection(h => { maniaPlayfield.Remove(h); - ((ManiaHitObject)h).Column += columnDelta; + h.Column += columnDelta; maniaPlayfield.Add(h); }); + } - // `HitObjectUsageEventBuffer`'s usage transferal flows and the playfield's `SetKeepAlive()` functionality do not combine well with this operation's usage pattern, + private void performOnSelection(Action action) + { + var selectedObjects = EditorBeatmap.SelectedHitObjects.OfType().ToArray(); + + EditorBeatmap.PerformOnSelection(h => action.Invoke((ManiaHitObject)h)); + + // `HitObjectUsageEventBuffer`'s usage transferal flows and the playfield's `SetKeepAlive()` functionality do not combine well with mania's usage patterns, // leading to selections being sometimes partially dropped if some of the objects being moved are off screen // (check blame for detailed explanation). // thus, ensure that selection is preserved manually.