Implement Hidden in C#.

Author: ajreckof

modules/mono/csharp_script.cpp

@@ -447,7 +447,7 @@ bool CSharpLanguage::handles_global_class_type(const String &p_type) const {
 
 String CSharpLanguage::get_global_class_name(const String &p_path, String *r_base_type, String *r_icon_path, bool *r_is_abstract, bool *r_is_tool, bool *r_is_hidden) const {
 	String class_name;
-	GDMonoCache::managed_callbacks.ScriptManagerBridge_GetGlobalClassName(&p_path, r_base_type, r_icon_path, r_is_abstract, r_is_tool, &class_name);
+	GDMonoCache::managed_callbacks.ScriptManagerBridge_GetGlobalClassName(&p_path, r_base_type, r_icon_path, r_is_abstract, r_is_tool, r_is_hidden, &class_name);
 	return class_name;
 }
 

modules/mono/glue/GodotSharp/GodotSharp/Core/Attributes/GlobalClassAttribute.cs

@@ -8,5 +8,11 @@ namespace Godot
     /// Exposes the target class as a global script class to Godot Engine.
     /// </summary>
     [AttributeUsage(AttributeTargets.Class)]
-    public sealed class GlobalClassAttribute : Attribute { }
+    public sealed class GlobalClassAttribute : Attribute
+    {
+        /// <summary>
+        /// Prevent the current class from appearing in the Create Node dialog.
+        /// </summary>
+        public bool Hidden { get; init; }
+    }
 }

modules/mono/glue/GodotSharp/GodotSharp/Core/Bridge/ManagedCallbacks.cs

@@ -19,7 +19,7 @@ public unsafe struct ManagedCallbacks
         public delegate* unmanaged<godot_string_name*, IntPtr, IntPtr> ScriptManagerBridge_CreateManagedForGodotObjectBinding;
         public delegate* unmanaged<IntPtr, IntPtr, godot_variant**, int, godot_bool> ScriptManagerBridge_CreateManagedForGodotObjectScriptInstance;
         public delegate* unmanaged<IntPtr, godot_string_name*, void> ScriptManagerBridge_GetScriptNativeName;
-        public delegate* unmanaged<godot_string*, godot_string*, godot_string*, godot_bool*, godot_bool*, godot_string*, void> ScriptManagerBridge_GetGlobalClassName;
+        public delegate* unmanaged<godot_string*, godot_string*, godot_string*, godot_bool*, godot_bool*, godot_bool*, godot_string*, void> ScriptManagerBridge_GetGlobalClassName;
         public delegate* unmanaged<IntPtr, IntPtr, void> ScriptManagerBridge_SetGodotObjectPtr;
         public delegate* unmanaged<IntPtr, godot_string_name*, godot_variant**, int, godot_bool*, void> ScriptManagerBridge_RaiseEventSignal;
         public delegate* unmanaged<IntPtr, IntPtr, godot_bool> ScriptManagerBridge_ScriptIsOrInherits;

modules/mono/glue/GodotSharp/GodotSharp/Core/Bridge/ScriptManagerBridge.cs

@@ -199,7 +199,7 @@ internal static unsafe void GetScriptNativeName(IntPtr scriptPtr, godot_string_n
         }
 
         [UnmanagedCallersOnly]
-        internal static unsafe void GetGlobalClassName(godot_string* scriptPath, godot_string* outBaseType, godot_string* outIconPath, godot_bool* outIsAbstract, godot_bool* outIsTool, godot_string* outClassName)
+        internal static unsafe void GetGlobalClassName(godot_string* scriptPath, godot_string* outBaseType, godot_string* outIconPath, godot_bool* outIsAbstract, godot_bool* outIsTool, godot_bool* outHidden, godot_string* outClassName)
         {
             // This method must always return the outBaseType for every script, even if the script is
             // not a global class. But if the script is not a global class it must return an empty
@@ -230,6 +230,15 @@ internal static unsafe void GetGlobalClassName(godot_string* scriptPath, godot_s
                 }
             }
 
+            if (outHidden != null)
+            {
+                var globalClassAttr = scriptType.GetCustomAttributes(inherit: false)
+                    .OfType<GlobalClassAttribute>()
+                    .FirstOrDefault();
+
+                *outHidden = (globalClassAttr?.Hidden == true).ToGodotBool();
+            }
+
             if (outBaseType != null)
             {
                 bool foundGlobalBaseScript = false;

modules/mono/mono_gd/gd_mono_cache.h

@@ -84,7 +84,7 @@ struct ManagedCallbacks {
 	using FuncScriptManagerBridge_CreateManagedForGodotObjectBinding = GCHandleIntPtr(GD_CLR_STDCALL *)(const StringName *, Object *);
 	using FuncScriptManagerBridge_CreateManagedForGodotObjectScriptInstance = bool(GD_CLR_STDCALL *)(const CSharpScript *, Object *, const Variant **, int32_t);
 	using FuncScriptManagerBridge_GetScriptNativeName = void(GD_CLR_STDCALL *)(const CSharpScript *, StringName *);
-	using FuncScriptManagerBridge_GetGlobalClassName = void(GD_CLR_STDCALL *)(const String *, String *, String *, bool *, bool *, String *);
+	using FuncScriptManagerBridge_GetGlobalClassName = void(GD_CLR_STDCALL *)(const String *, String *, String *, bool *, bool *, bool *, String *);
 	using FuncScriptManagerBridge_SetGodotObjectPtr = void(GD_CLR_STDCALL *)(GCHandleIntPtr, Object *);
 	using FuncScriptManagerBridge_RaiseEventSignal = void(GD_CLR_STDCALL *)(GCHandleIntPtr, const StringName *, const Variant **, int32_t, bool *);
 	using FuncScriptManagerBridge_ScriptIsOrInherits = bool(GD_CLR_STDCALL *)(const CSharpScript *, const CSharpScript *);