Add failing test coverage showing coordinate truncation

osu.Game.Tests/Beatmaps/Formats/LegacyBeatmapDecoderTest.cs

@@ -468,6 +468,40 @@ public void TestDecodeBeatmapComboOffsetsCatch()
             }
         }
 
+        [Test]
+        public void TestDecodeBeatmapHitObjectCoordinatesLegacy()
+        {
+            var decoder = new LegacyBeatmapDecoder();
+
+            using (var resStream = TestResources.OpenResource("hitobject-coordinates-legacy.osu"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var hitObjects = decoder.Decode(stream).HitObjects;
+
+                var positionData = hitObjects[0] as IHasPosition;
+
+                Assert.IsNotNull(positionData);
+                Assert.AreEqual(new Vector2(256, 256), positionData!.Position);
+            }
+        }
+
+        [Test]
+        public void TestDecodeBeatmapHitObjectCoordinatesLazer()
+        {
+            var decoder = new LegacyBeatmapDecoder(LegacyBeatmapEncoder.FIRST_LAZER_VERSION);
+
+            using (var resStream = TestResources.OpenResource("hitobject-coordinates-lazer.osu"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var hitObjects = decoder.Decode(stream).HitObjects;
+
+                var positionData = hitObjects[0] as IHasPosition;
+
+                Assert.IsNotNull(positionData);
+                Assert.AreEqual(new Vector2(256.99853f, 256.001f), positionData!.Position);
+            }
+        }
+
         [Test]
         public void TestDecodeBeatmapHitObjects()
         {

osu.Game.Tests/Resources/hitobject-coordinates-lazer.osu

@@ -0,0 +1,6 @@
+osu file format v128
+
+[HitObjects]
+// Coordinates should be preserves in lazer beatmaps.
+
+256.99853,256.001,1000,49,0,0:0:0:0:

osu.Game.Tests/Resources/hitobject-coordinates-legacy.osu

@@ -0,0 +1,5 @@
+osu file format v14
+
+[HitObjects]
+// Coordinates should be truncated to int values in legacy beatmaps.
+256.99853,256.001,1000,49,0,0:0:0:0: