Update for new NOTIFICATION_POSTINITIALIZE handling

Author: dsnopek

gdextension/gdextension_interface.h

@@ -268,6 +268,7 @@ typedef void (*GDExtensionClassReference)(GDExtensionClassInstancePtr p_instance
 typedef void (*GDExtensionClassUnreference)(GDExtensionClassInstancePtr p_instance);
 typedef void (*GDExtensionClassCallVirtual)(GDExtensionClassInstancePtr p_instance, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr r_ret);
 typedef GDExtensionObjectPtr (*GDExtensionClassCreateInstance)(void *p_class_userdata);
+typedef GDExtensionObjectPtr (*GDExtensionClassCreateInstance2)(void *p_class_userdata, bool p_notify_postinitialize);
 typedef void (*GDExtensionClassFreeInstance)(void *p_class_userdata, GDExtensionClassInstancePtr p_instance);
 typedef GDExtensionClassInstancePtr (*GDExtensionClassRecreateInstance)(void *p_class_userdata, GDExtensionObjectPtr p_object);
 typedef GDExtensionClassCallVirtual (*GDExtensionClassGetVirtual)(void *p_class_userdata, GDExtensionConstStringNamePtr p_name);
@@ -292,7 +293,7 @@ typedef struct {
 	GDExtensionClassGetVirtual get_virtual_func; // Queries a virtual function by name and returns a callback to invoke the requested virtual function.
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo; // Deprecated. Use GDExtensionClassCreationInfo3 instead.
+} GDExtensionClassCreationInfo; // Deprecated. Use GDExtensionClassCreationInfo4 instead.
 
 typedef struct {
 	GDExtensionBool is_virtual;
@@ -325,7 +326,7 @@ typedef struct {
 	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo2; // Deprecated. Use GDExtensionClassCreationInfo3 instead.
+} GDExtensionClassCreationInfo2; // Deprecated. Use GDExtensionClassCreationInfo4 instead.
 
 typedef struct {
 	GDExtensionBool is_virtual;
@@ -359,7 +360,41 @@ typedef struct {
 	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
 	GDExtensionClassGetRID get_rid_func;
 	void *class_userdata; // Per-class user data, later accessible in instance bindings.
-} GDExtensionClassCreationInfo3;
+} GDExtensionClassCreationInfo3; // Deprecated. Use GDExtensionClassCreationInfo4 instead.
+
+typedef struct {
+	GDExtensionBool is_virtual;
+	GDExtensionBool is_abstract;
+	GDExtensionBool is_exposed;
+	GDExtensionBool is_runtime;
+	GDExtensionClassSet set_func;
+	GDExtensionClassGet get_func;
+	GDExtensionClassGetPropertyList get_property_list_func;
+	GDExtensionClassFreePropertyList2 free_property_list_func;
+	GDExtensionClassPropertyCanRevert property_can_revert_func;
+	GDExtensionClassPropertyGetRevert property_get_revert_func;
+	GDExtensionClassValidateProperty validate_property_func;
+	GDExtensionClassNotification2 notification_func;
+	GDExtensionClassToString to_string_func;
+	GDExtensionClassReference reference_func;
+	GDExtensionClassUnreference unreference_func;
+	GDExtensionClassCreateInstance2 create_instance_func; // (Default) constructor; mandatory. If the class is not instantiable, consider making it virtual or abstract.
+	GDExtensionClassFreeInstance free_instance_func; // Destructor; mandatory.
+	GDExtensionClassRecreateInstance recreate_instance_func;
+	// Queries a virtual function by name and returns a callback to invoke the requested virtual function.
+	GDExtensionClassGetVirtual get_virtual_func;
+	// Paired with `call_virtual_with_data_func`, this is an alternative to `get_virtual_func` for extensions that
+	// need or benefit from extra data when calling virtual functions.
+	// Returns user data that will be passed to `call_virtual_with_data_func`.
+	// Returning `NULL` from this function signals to Godot that the virtual function is not overridden.
+	// Data returned from this function should be managed by the extension and must be valid until the extension is deinitialized.
+	// You should supply either `get_virtual_func`, or `get_virtual_call_data_func` with `call_virtual_with_data_func`.
+	GDExtensionClassGetVirtualCallData get_virtual_call_data_func;
+	// Used to call virtual functions when `get_virtual_call_data_func` is not null.
+	GDExtensionClassCallVirtualWithData call_virtual_with_data_func;
+	GDExtensionClassGetRID get_rid_func;
+	void *class_userdata; // Per-class user data, later accessible in instance bindings.
+} GDExtensionClassCreationInfo4;
 
 typedef void *GDExtensionClassLibraryPtr;
 
@@ -2680,6 +2715,7 @@ typedef void *(*GDExtensionInterfaceCallableCustomGetUserData)(GDExtensionConstT
 /**
  * @name classdb_construct_object
  * @since 4.1
+ * @deprecated in Godot 4.4. Use `classdb_construct_object2` instead.
  *
  * Constructs an Object of the requested class.
  *
@@ -2691,6 +2727,22 @@ typedef void *(*GDExtensionInterfaceCallableCustomGetUserData)(GDExtensionConstT
  */
 typedef GDExtensionObjectPtr (*GDExtensionInterfaceClassdbConstructObject)(GDExtensionConstStringNamePtr p_classname);
 
+/**
+ * @name classdb_construct_object2
+ * @since 4.4
+ *
+ * Constructs an Object of the requested class.
+ *
+ * The passed class must be a built-in godot class, or an already-registered extension class. In both cases, object_set_instance() should be called to fully initialize the object.
+ *
+ * "NOTIFICATION_POSTINITIALIZE" must be sent after construction.
+ *
+ * @param p_classname A pointer to a StringName with the class name.
+ *
+ * @return A pointer to the newly created Object.
+ */
+typedef GDExtensionObjectPtr (*GDExtensionInterfaceClassdbConstructObject2)(GDExtensionConstStringNamePtr p_classname);
+
 /**
  * @name classdb_get_method_bind
  * @since 4.1
@@ -2722,7 +2774,7 @@ typedef void *(*GDExtensionInterfaceClassdbGetClassTag)(GDExtensionConstStringNa
 /**
  * @name classdb_register_extension_class
  * @since 4.1
- * @deprecated in Godot 4.2. Use `classdb_register_extension_class3` instead.
+ * @deprecated in Godot 4.2. Use `classdb_register_extension_class4` instead.
  *
  * Registers an extension class in the ClassDB.
  *
@@ -2738,7 +2790,7 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass)(GDExtensionCla
 /**
  * @name classdb_register_extension_class2
  * @since 4.2
- * @deprecated in Godot 4.3. Use `classdb_register_extension_class3` instead.
+ * @deprecated in Godot 4.3. Use `classdb_register_extension_class4` instead.
  *
  * Registers an extension class in the ClassDB.
  *
@@ -2754,6 +2806,7 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass2)(GDExtensionCl
 /**
  * @name classdb_register_extension_class3
  * @since 4.3
+ * @deprecated in Godot 4.4. Use `classdb_register_extension_class4` instead.
  *
  * Registers an extension class in the ClassDB.
  *
@@ -2766,6 +2819,21 @@ typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass2)(GDExtensionCl
  */
 typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass3)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo3 *p_extension_funcs);
 
+/**
+ * @name classdb_register_extension_class4
+ * @since 4.4
+ *
+ * Registers an extension class in the ClassDB.
+ *
+ * Provided struct can be safely freed once the function returns.
+ *
+ * @param p_library A pointer the library received by the GDExtension's entry point function.
+ * @param p_class_name A pointer to a StringName with the class name.
+ * @param p_parent_class_name A pointer to a StringName with the parent class name.
+ * @param p_extension_funcs A pointer to a GDExtensionClassCreationInfo2 struct.
+ */
+typedef void (*GDExtensionInterfaceClassdbRegisterExtensionClass4)(GDExtensionClassLibraryPtr p_library, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstStringNamePtr p_parent_class_name, const GDExtensionClassCreationInfo4 *p_extension_funcs);
+
 /**
  * @name classdb_register_extension_class_method
  * @since 4.1

include/godot_cpp/classes/wrapped.hpp

@@ -104,7 +104,6 @@ class Wrapped {
 	::godot::List<::godot::PropertyInfo> plist_owned;
 
 	void _postinitialize();
-	virtual void _notificationv(int32_t p_what, bool p_reversed = false) {}
 
 	Wrapped(const StringName p_godot_class);
 	Wrapped(GodotObject *p_godot_object);
@@ -398,11 +397,6 @@ public:
 		_gde_binding_reference_callback,                                                                                                                                               \
 	};                                                                                                                                                                                 \
                                                                                                                                                                                        \
-protected:                                                                                                                                                                             \
-	virtual void _notificationv(int32_t p_what, bool p_reversed = false) override {                                                                                                    \
-		m_class::notification_bind(this, p_what, p_reversed);                                                                                                                          \
-	}                                                                                                                                                                                  \
-                                                                                                                                                                                       \
 private:
 
 // Don't use this for your classes, use GDCLASS() instead.

include/godot_cpp/core/class_db.hpp

@@ -116,9 +116,13 @@ class ClassDB {
 	static void _register_class(bool p_virtual = false, bool p_exposed = true, bool p_runtime = false);
 
 	template <typename T>
-	static GDExtensionObjectPtr _create_instance_func(void *data) {
+	static GDExtensionObjectPtr _create_instance_func(void *data, bool p_notify_postinitialize) {
 		if constexpr (!std::is_abstract_v<T>) {
-			T *new_object = memnew(T);
+			Wrapped::_set_construct_info<T>();
+			T *new_object = new ("", "") T;
+			if (p_notify_postinitialize) {
+				new_object->_postinitialize();
+			}
 			return new_object->_owner;
 		} else {
 			return nullptr;
@@ -239,7 +243,7 @@ void ClassDB::_register_class(bool p_virtual, bool p_exposed, bool p_runtime) {
 	class_register_order.push_back(cl.name);
 
 	// Register this class with Godot
-	GDExtensionClassCreationInfo3 class_info = {
+	GDExtensionClassCreationInfo4 class_info = {
 		p_virtual, // GDExtensionBool is_virtual;
 		is_abstract, // GDExtensionBool is_abstract;
 		p_exposed, // GDExtensionBool is_exposed;
@@ -265,7 +269,7 @@ void ClassDB::_register_class(bool p_virtual, bool p_exposed, bool p_runtime) {
 		(void *)&T::get_class_static(), // void *class_userdata;
 	};
 
-	internal::gdextension_interface_classdb_register_extension_class3(internal::library, cl.name._native_ptr(), cl.parent_name._native_ptr(), &class_info);
+	internal::gdextension_interface_classdb_register_extension_class4(internal::library, cl.name._native_ptr(), cl.parent_name._native_ptr(), &class_info);
 
 	// call bind_methods etc. to register all members of the class
 	T::initialize_class();

include/godot_cpp/godot.hpp

@@ -179,10 +179,10 @@ extern "C" GDExtensionInterfaceRefSetObject gdextension_interface_ref_set_object
 extern "C" GDExtensionInterfaceScriptInstanceCreate3 gdextension_interface_script_instance_create3;
 extern "C" GDExtensionInterfacePlaceHolderScriptInstanceCreate gdextension_interface_placeholder_script_instance_create;
 extern "C" GDExtensionInterfacePlaceHolderScriptInstanceUpdate gdextension_interface_placeholder_script_instance_update;
-extern "C" GDExtensionInterfaceClassdbConstructObject gdextension_interface_classdb_construct_object;
+extern "C" GDExtensionInterfaceClassdbConstructObject2 gdextension_interface_classdb_construct_object2;
 extern "C" GDExtensionInterfaceClassdbGetMethodBind gdextension_interface_classdb_get_method_bind;
 extern "C" GDExtensionInterfaceClassdbGetClassTag gdextension_interface_classdb_get_class_tag;
-extern "C" GDExtensionInterfaceClassdbRegisterExtensionClass3 gdextension_interface_classdb_register_extension_class3;
+extern "C" GDExtensionInterfaceClassdbRegisterExtensionClass4 gdextension_interface_classdb_register_extension_class4;
 extern "C" GDExtensionInterfaceClassdbRegisterExtensionClassMethod gdextension_interface_classdb_register_extension_class_method;
 extern "C" GDExtensionInterfaceClassdbRegisterExtensionClassVirtualMethod gdextension_interface_classdb_register_extension_class_virtual_method;
 extern "C" GDExtensionInterfaceClassdbRegisterExtensionClassIntegerConstant gdextension_interface_classdb_register_extension_class_integer_constant;

src/classes/wrapped.cpp

@@ -47,9 +47,9 @@ const StringName *Wrapped::_get_extension_class_name() {
 }
 
 void Wrapped::_postinitialize() {
-	// Only send NOTIFICATION_POSTINITIALIZE for extension classes.
-	if (_is_extension_class()) {
-		_notificationv(Object::NOTIFICATION_POSTINITIALIZE);
+	Object *obj = dynamic_cast<Object *>(this);
+	if (obj) {
+		obj->notification(Object::NOTIFICATION_POSTINITIALIZE);
 	}
 }
 
@@ -73,7 +73,7 @@ Wrapped::Wrapped(const StringName p_godot_class) {
 		}
 	}
 #endif
-	_owner = godot::internal::gdextension_interface_classdb_construct_object(reinterpret_cast<GDExtensionConstStringNamePtr>(p_godot_class._native_ptr()));
+	_owner = godot::internal::gdextension_interface_classdb_construct_object2(reinterpret_cast<GDExtensionConstStringNamePtr>(p_godot_class._native_ptr()));
 
 	if (_constructing_extension_class_name) {
 		godot::internal::gdextension_interface_object_set_instance(_owner, reinterpret_cast<GDExtensionConstStringNamePtr>(_constructing_extension_class_name), this);

src/godot.cpp

@@ -185,10 +185,10 @@ GDExtensionInterfaceRefSetObject gdextension_interface_ref_set_object = nullptr;
 GDExtensionInterfaceScriptInstanceCreate3 gdextension_interface_script_instance_create3 = nullptr;
 GDExtensionInterfacePlaceHolderScriptInstanceCreate gdextension_interface_placeholder_script_instance_create = nullptr;
 GDExtensionInterfacePlaceHolderScriptInstanceUpdate gdextension_interface_placeholder_script_instance_update = nullptr;
-GDExtensionInterfaceClassdbConstructObject gdextension_interface_classdb_construct_object = nullptr;
+GDExtensionInterfaceClassdbConstructObject2 gdextension_interface_classdb_construct_object2 = nullptr;
 GDExtensionInterfaceClassdbGetMethodBind gdextension_interface_classdb_get_method_bind = nullptr;
 GDExtensionInterfaceClassdbGetClassTag gdextension_interface_classdb_get_class_tag = nullptr;
-GDExtensionInterfaceClassdbRegisterExtensionClass3 gdextension_interface_classdb_register_extension_class3 = nullptr;
+GDExtensionInterfaceClassdbRegisterExtensionClass4 gdextension_interface_classdb_register_extension_class4 = nullptr;
 GDExtensionInterfaceClassdbRegisterExtensionClassMethod gdextension_interface_classdb_register_extension_class_method = nullptr;
 GDExtensionInterfaceClassdbRegisterExtensionClassVirtualMethod gdextension_interface_classdb_register_extension_class_virtual_method = nullptr;
 GDExtensionInterfaceClassdbRegisterExtensionClassIntegerConstant gdextension_interface_classdb_register_extension_class_integer_constant = nullptr;
@@ -464,10 +464,10 @@ GDExtensionBool GDExtensionBinding::init(GDExtensionInterfaceGetProcAddress p_ge
 	LOAD_PROC_ADDRESS(script_instance_create3, GDExtensionInterfaceScriptInstanceCreate3);
 	LOAD_PROC_ADDRESS(placeholder_script_instance_create, GDExtensionInterfacePlaceHolderScriptInstanceCreate);
 	LOAD_PROC_ADDRESS(placeholder_script_instance_update, GDExtensionInterfacePlaceHolderScriptInstanceUpdate);
-	LOAD_PROC_ADDRESS(classdb_construct_object, GDExtensionInterfaceClassdbConstructObject);
+	LOAD_PROC_ADDRESS(classdb_construct_object2, GDExtensionInterfaceClassdbConstructObject2);
 	LOAD_PROC_ADDRESS(classdb_get_method_bind, GDExtensionInterfaceClassdbGetMethodBind);
 	LOAD_PROC_ADDRESS(classdb_get_class_tag, GDExtensionInterfaceClassdbGetClassTag);
-	LOAD_PROC_ADDRESS(classdb_register_extension_class3, GDExtensionInterfaceClassdbRegisterExtensionClass3);
+	LOAD_PROC_ADDRESS(classdb_register_extension_class4, GDExtensionInterfaceClassdbRegisterExtensionClass4);
 	LOAD_PROC_ADDRESS(classdb_register_extension_class_method, GDExtensionInterfaceClassdbRegisterExtensionClassMethod);
 	LOAD_PROC_ADDRESS(classdb_register_extension_class_virtual_method, GDExtensionInterfaceClassdbRegisterExtensionClassVirtualMethod);
 	LOAD_PROC_ADDRESS(classdb_register_extension_class_integer_constant, GDExtensionInterfaceClassdbRegisterExtensionClassIntegerConstant);