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

Fix precision issue when converting mania beatmaps
2026-05-19 05:09:54 +08:00 · 2023-12-07 12:49:41 +01:00
parent 2df15698b6 d6cb8b70bb
commit 54f11a0dad
19 changed files with 615 additions and 32 deletions
@@ -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)
@@ -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")]
@@ -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)
@@ -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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@@ -0,0 +1,126 @@
+osu file format v5
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+//Storyboard Layer 1 (Failing)
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+//Storyboard Sound Samples
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-
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@@ -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>