Merge pull request #25697 from smoogipoo/fix-mania-conversion

Fix precision issue when converting mania beatmaps

osu.Game.Rulesets.Mania.Tests/ManiaBeatmapConversionTest.cs

@@ -18,10 +18,12 @@ namespace osu.Game.Rulesets.Mania.Tests
     [TestFixture]
     public class ManiaBeatmapConversionTest : BeatmapConversionTest<ManiaConvertMapping, ConvertValue>
     {
-        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
+        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania.Tests";
 
         [TestCase("basic")]
         [TestCase("zero-length-slider")]
+        [TestCase("20544")]
+        [TestCase("100374")]
         public void Test(string name) => base.Test(name);
 
         protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)

osu.Game.Rulesets.Mania.Tests/ManiaBeatmapSampleConversionTest.cs

@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Mania.Tests
     [TestFixture]
     public class ManiaBeatmapSampleConversionTest : BeatmapConversionTest<ConvertMapping<SampleConvertValue>, SampleConvertValue>
     {
-        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
+        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania.Tests";
 
         [TestCase("convert-samples")]
         [TestCase("mania-samples")]

osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs

@@ -12,7 +12,7 @@ namespace osu.Game.Rulesets.Mania.Tests
 {
     public class ManiaDifficultyCalculatorTest : DifficultyCalculatorTest
     {
-        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
+        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania.Tests";
 
         [TestCase(2.3493769750220914d, 242, "diffcalc-test")]
         public void Test(double expectedStarRating, int expectedMaxCombo, string name)

osu.Game.Rulesets.Mania.Tests/Resources/Testing/Beatmaps/100374.osu

@@ -0,0 +1,449 @@
+osu file format v9
+
+[General]
+StackLeniency: 0.4
+Mode: 0
+
+[Difficulty]
+HPDrainRate:5
+CircleSize:4
+OverallDifficulty:5
+ApproachRate:6
+SliderMultiplier:1.7
+SliderTickRate:2
+
+[Events]
+//Background and Video events
+//Break Periods
+2,98678,112295
+2,185757,200967
+//Storyboard Layer 0 (Background)
+//Storyboard Layer 1 (Fail)
+//Storyboard Layer 2 (Pass)
+//Storyboard Layer 3 (Foreground)
+//Storyboard Sound Samples
+//Background Colour Transformations
+3,100,163,162,255
+
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osu.Game.Rulesets.Mania.Tests/Resources/Testing/Beatmaps/20544.osu

@@ -0,0 +1,126 @@
+osu file format v5
+
+[General]
+StackLeniency: 0.7
+Mode: 0
+
+[Difficulty]
+HPDrainRate:2
+CircleSize:5
+OverallDifficulty:2
+SliderMultiplier:1
+SliderTickRate:2
+
+[Events]
+//Background and Video events
+//Break Periods
+//Storyboard Layer 0 (Background)
+//Storyboard Layer 1 (Failing)
+//Storyboard Layer 2 (Passing)
+//Storyboard Layer 3 (Foreground)
+//Storyboard Sound Samples
+//Background Colour Transformations
+3,100,163,162,255
+
+[TimingPoints]
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+
+[HitObjects]
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osu.Game.Rulesets.Mania.Tests/Resources/Testing/Beatmaps/basic.osu

@@ -1,27 +1,27 @@
-osu file format v14
-
-[Difficulty]
-HPDrainRate:6
-CircleSize:4
-OverallDifficulty:7
-ApproachRate:8.3
-SliderMultiplier:1.6
-SliderTickRate:1
-
-[TimingPoints]
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-
-[HitObjects]
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+osu file format v14
+
+[Difficulty]
+HPDrainRate:6
+CircleSize:4
+OverallDifficulty:7
+ApproachRate:8.3
+SliderMultiplier:1.6
+SliderTickRate:1
+
+[TimingPoints]
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osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/PatternGenerator.cs

@@ -52,14 +52,18 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <returns>The column.</returns>
         protected int GetColumn(float position, bool allowSpecial = false)
         {
+            // Casts to doubles are present here because, although code is originally written as float division,
+            // the division actually appears to occur on doubles in osu!stable. This is likely a result of
+            // differences in optimisations between .NET versions due to the presence of the double parameter type of Math.Floor().
+
             if (allowSpecial && TotalColumns == 8)
             {
                 const float local_x_divisor = 512f / 7;
-                return Math.Clamp((int)MathF.Floor(position / local_x_divisor), 0, 6) + 1;
+                return Math.Clamp((int)Math.Floor((double)position / local_x_divisor), 0, 6) + 1;
             }
 
             float localXDivisor = 512f / TotalColumns;
-            return Math.Clamp((int)MathF.Floor(position / localXDivisor), 0, TotalColumns - 1);
+            return Math.Clamp((int)Math.Floor((double)position / localXDivisor), 0, TotalColumns - 1);
         }
 
         /// <summary>