Allow readonly and writeonly C# properties to be accessed from GDScript

1 files changed, 8 insertions, 2 deletions

diff --git a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs
index 231a7be021..9de99414b6 100644
--- a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs
+++ b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs
@@ -119,8 +119,14 @@ namespace Godot.SourceGenerators
                 .Where(s => !s.IsStatic && s.Kind == SymbolKind.Field && !s.IsImplicitlyDeclared)
                 .Cast<IFieldSymbol>();
 
-            var godotClassProperties = propertySymbols.WhereIsGodotCompatibleType(typeCache).ToArray();
-            var godotClassFields = fieldSymbols.WhereIsGodotCompatibleType(typeCache).ToArray();
+            // TODO: We should still restore read-only properties after reloading assembly. Two possible ways: reflection or turn RestoreGodotObjectData into a constructor overload.
+            // Ignore properties without a getter, without a setter or with an init-only setter. Godot properties must be both readable and writable.
+            var godotClassProperties = propertySymbols.Where(property => !(property.IsReadOnly || property.IsWriteOnly || property.SetMethod!.IsInitOnly))
+                .WhereIsGodotCompatibleType(typeCache)
+                .ToArray();
+            var godotClassFields = fieldSymbols.Where(property => !property.IsReadOnly)
+                .WhereIsGodotCompatibleType(typeCache)
+                .ToArray();
 
             var signalDelegateSymbols = members
                 .Where(s => s.Kind == SymbolKind.NamedType)