From 9620c5875194adf2455b7489cf2336b879b578c7 Mon Sep 17 00:00:00 2001
From: clayton <me@clayton.cc>
Date: Sun, 11 Aug 2024 09:45:43 -0700
Subject: [PATCH] Fix mouseX legacy replay parsing for high key counts in mania

---
 osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs b/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs
index ba1fdd6adf..6ad118547b 100644
--- a/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs
+++ b/osu.Game/Scoring/Legacy/LegacyScoreDecoder.cs
@@ -280,8 +280,11 @@ private void readLegacyReplay(Replay replay, StreamReader reader)
                     continue;
                 }
 
+                // In mania, mouseX encodes the pressed keys in the lower 20 bits
+                int mouseXParseLimit = currentRuleset.RulesetInfo.OnlineID == 3 ? (1 << 20) - 1 : Parsing.MAX_COORDINATE_VALUE;
+
                 float diff = Parsing.ParseFloat(split[0]);
-                float mouseX = Parsing.ParseFloat(split[1], Parsing.MAX_COORDINATE_VALUE);
+                float mouseX = Parsing.ParseFloat(split[1], mouseXParseLimit);
                 float mouseY = Parsing.ParseFloat(split[2], Parsing.MAX_COORDINATE_VALUE);
 
                 lastTime += diff;