From de73a1863775b6be41313ab2a5a0f0599c8f6b72 Mon Sep 17 00:00:00 2001
From: Evil Factory <36804725+evilfactory@users.noreply.github.com>
Date: Sat, 28 Feb 2026 16:13:07 -0300
Subject: [PATCH] Compatibility for in memory scripts that used GameMain.LuaCs

---
 .../LuaCs/_Services/PluginManagementService.cs       | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Barotrauma/BarotraumaShared/SharedSource/LuaCs/_Services/PluginManagementService.cs b/Barotrauma/BarotraumaShared/SharedSource/LuaCs/_Services/PluginManagementService.cs
index ad32a8d6f..3af050db4 100644
--- a/Barotrauma/BarotraumaShared/SharedSource/LuaCs/_Services/PluginManagementService.cs
+++ b/Barotrauma/BarotraumaShared/SharedSource/LuaCs/_Services/PluginManagementService.cs
@@ -560,9 +560,12 @@ public class PluginManagementService : IAssemblyManagementService
                         compileWithInternalName = resourceInfo.UseInternalAccessName;
                 
                         CancellationToken token = CancellationToken.None;
-                
+
+                        string sourceCode = loadRes.Value;
+                        sourceCode = DoSourceCodeTextCompatibilityPass(sourceCode);
+
                         syntaxTreesBuilder.Add(SyntaxFactory.ParseSyntaxTree(
-                            text: loadRes.Value,
+                            text: sourceCode,
                             options: ScriptParseOptions,
                             path: null,
                             encoding: Encoding.Default,
@@ -613,6 +616,11 @@ public class PluginManagementService : IAssemblyManagementService
         }
     }
 
+    private string DoSourceCodeTextCompatibilityPass(string sourceCode)
+    {
+        return sourceCode.Replace("GameMain.LuaCs", "LuaCsSetup.Instance");
+    }
+
     private IntPtr OnAssemblyLoaderResolvingUnmanaged(Assembly arg1, string arg2)
     {
         // TODO: Implement extern assembly lookup for Native/Unmanaged Assemblies.