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Merge pull request #29933 from bdach/fix-dodgy-dim

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Fix `DrawableOsuHitObject` not properly cleaning up dim application callbacks
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Dan Balasescu 2024-09-20 14:21:14 +09:00 committed by GitHub
commit ccf1acce56
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1 changed files with 25 additions and 10 deletions
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osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuHitObject.cs
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@ -91,19 +91,34 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
drawableObjectPiece.ApplyCustomUpdateState -= applyDimToDrawableHitObject;
drawableObjectPiece.ApplyCustomUpdateState += applyDimToDrawableHitObject;
}
else
// but at the end apply the transforms now regardless of whether this is a DHO or not.
// the above is just to ensure they don't get overwritten later.
applyDim(piece);
}
}
void applyDim(Drawable piece)
protected override void ClearNestedHitObjects()
{
base.ClearNestedHitObjects();
// any dimmable pieces that are DHOs will be pooled separately.
// `applyDimToDrawableHitObject` is a closure that implicitly captures `this`,
// and because of separate pooling of parent and child objects, there is no guarantee that the pieces will be associated with `this` again on re-use.
// therefore, clean up the subscription here to avoid crosstalk.
// not doing so can result in the callback attempting to read things from `this` when it is in a completely bogus state (not in use or similar).
foreach (var piece in DimmablePieces.OfType<DrawableHitObject>())
piece.ApplyCustomUpdateState -= applyDimToDrawableHitObject;
}
private void applyDim(Drawable piece)
{
piece.FadeColour(new Color4(195, 195, 195, 255));
using (piece.BeginDelayedSequence(InitialLifetimeOffset - OsuHitWindows.MISS_WINDOW))
piece.FadeColour(Color4.White, 100);
}
void applyDimToDrawableHitObject(DrawableHitObject dho, ArmedState _) => applyDim(dho);
}
private void applyDimToDrawableHitObject(DrawableHitObject dho, ArmedState _) => applyDim(dho);
protected sealed override double InitialLifetimeOffset => HitObject.TimePreempt;