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Refactor usage of object counts for mania key count lookup to be a bit safer

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Protects against non-initialised values and also div-by-zero.
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Dean Herbert 2023-12-19 18:27:44 +09:00
parent f09c6b8c1b
commit 372f930f8b
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1 changed files with 14 additions and 11 deletions
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25
osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
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@ -59,23 +59,26 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
{
double roundedCircleSize = Math.Round(difficulty.CircleSize);
if (new ManiaRuleset().RulesetInfo.Equals(difficulty.SourceRuleset))
if (difficulty.SourceRuleset.ShortName == ManiaRuleset.SHORT_NAME)
return (int)Math.Max(1, roundedCircleSize);
double roundedOverallDifficulty = Math.Round(difficulty.OverallDifficulty);
int countSliderOrSpinner = difficulty.EndTimeObjectCount;
if (difficulty.TotalObjectCount > 0 && difficulty.EndTimeObjectCount >= 0)
{
int countSliderOrSpinner = difficulty.EndTimeObjectCount;
// In osu!stable, this division appears as if it happens on floats, but due to release-mode
// optimisations, it actually ends up happening on doubles.
double percentSpecialObjects = (double)countSliderOrSpinner / difficulty.TotalObjectCount;
// In osu!stable, this division appears as if it happens on floats, but due to release-mode
// optimisations, it actually ends up happening on doubles.
double percentSpecialObjects = (double)countSliderOrSpinner / difficulty.TotalObjectCount;
if (percentSpecialObjects < 0.2)
return 7;
if (percentSpecialObjects < 0.3 || roundedCircleSize >= 5)
return roundedOverallDifficulty > 5 ? 7 : 6;
if (percentSpecialObjects > 0.6)
return roundedOverallDifficulty > 4 ? 5 : 4;
if (percentSpecialObjects < 0.2)
return 7;
if (percentSpecialObjects < 0.3 || roundedCircleSize >= 5)
return roundedOverallDifficulty > 5 ? 7 : 6;
if (percentSpecialObjects > 0.6)
return roundedOverallDifficulty > 4 ? 5 : 4;
}
return Math.Max(4, Math.Min((int)roundedOverallDifficulty + 1, 7));
}