From da349465fd420c114bd844e93b362967e72e76e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Sat, 19 Sep 2026 23:16:02 +0200
Subject: [PATCH] Work around marshalling for bools

Apparently C# marshalls bools as 4 byte integers
---
 ScriptCoreGenerator/ScriptGlueGenerator.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/ScriptCoreGenerator/ScriptGlueGenerator.cs b/ScriptCoreGenerator/ScriptGlueGenerator.cs
index 1dd87e7..e38260a 100644
--- a/ScriptCoreGenerator/ScriptGlueGenerator.cs
+++ b/ScriptCoreGenerator/ScriptGlueGenerator.cs
@@ -204,6 +204,18 @@ public class ScriptGlueGenerator : IIncrementalGenerator
             ReturnValueConversion = null
         });
 
+        // A bool in an unmanaged function pointer is marshalled as a 4-byte Win32 BOOL.
+        // Beef bools are 1 byte (only al is written), so we pass them as byte and convert manually.
+        beefTypeToMappedType.Add("bool", new MappedType
+        {
+            BeefTypeName = "bool",
+            CSharpTypeName = "byte",
+            CSharpWrapperType = "bool",
+            ReturnValueConversion = "return returnValue != 0;",
+            WrapperConvertInput = "byte {0} = (byte)({1} ? 1 : 0);",
+            WrapperOutConversion = "{1} = {0} != 0;"
+        });
+
         beefTypeToMappedType.Add("uint8*", new MappedType
         {
             BeefTypeName = "uint8*",