From d072c6a743ffb6a2a3614587703de90588dbe169 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 9 Aug 2024 16:19:25 +0900
Subject: [PATCH] Fix hit object coordinates being truncated to `int` values

Closes https://github.com/ppy/osu/issues/29340.
---
 osu.Game/Beatmaps/Formats/LegacyDecoder.cs                 | 6 ++++++
 osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs | 7 +++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/osu.Game/Beatmaps/Formats/LegacyDecoder.cs b/osu.Game/Beatmaps/Formats/LegacyDecoder.cs
index 30a78a16ed..ca4fadf458 100644
--- a/osu.Game/Beatmaps/Formats/LegacyDecoder.cs
+++ b/osu.Game/Beatmaps/Formats/LegacyDecoder.cs
@@ -18,6 +18,12 @@ public abstract class LegacyDecoder<T> : Decoder<T>
     {
         public const int LATEST_VERSION = 14;
 
+        /// <summary>
+        /// The .osu format (beatmap) version.
+        ///
+        /// osu!stable's versions end at <see cref="LATEST_VERSION"/>.
+        /// osu!lazer's versions starts at <see cref="LegacyBeatmapEncoder.FIRST_LAZER_VERSION"/>.
+        /// </summary>
         protected readonly int FormatVersion;
 
         protected LegacyDecoder(int version)
diff --git a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
index 37a87462ca..8e6ffa20cc 100644
--- a/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
+++ b/osu.Game/Rulesets/Objects/Legacy/ConvertHitObjectParser.cs
@@ -32,7 +32,7 @@ public abstract class ConvertHitObjectParser : HitObjectParser
         protected readonly double Offset;
 
         /// <summary>
-        /// The beatmap version.
+        /// The .osu format (beatmap) version.
         /// </summary>
         protected readonly int FormatVersion;
 
@@ -48,7 +48,10 @@ public override HitObject Parse(string text)
         {
             string[] split = text.Split(',');
 
-            Vector2 pos = new Vector2((int)Parsing.ParseFloat(split[0], Parsing.MAX_COORDINATE_VALUE), (int)Parsing.ParseFloat(split[1], Parsing.MAX_COORDINATE_VALUE));
+            Vector2 pos =
+                FormatVersion >= LegacyBeatmapEncoder.FIRST_LAZER_VERSION
+                    ? new Vector2(Parsing.ParseFloat(split[0], Parsing.MAX_COORDINATE_VALUE), Parsing.ParseFloat(split[1], Parsing.MAX_COORDINATE_VALUE))
+                    : new Vector2((int)Parsing.ParseFloat(split[0], Parsing.MAX_COORDINATE_VALUE), (int)Parsing.ParseFloat(split[1], Parsing.MAX_COORDINATE_VALUE));
 
             double startTime = Parsing.ParseDouble(split[2]) + Offset;