add singleton example

demo/demo.gd

@@ -2,5 +2,5 @@ extends Node
 
 func _ready() -> void:
 	print("Hello GDScript!")
-	# TODO: Static https://github.com/godotengine/godot/issues/61963
-	Example.new().hello_extension()
+	$MyNode.hello_node()
+	MySingleton.hello_singleton()

demo/demo.tscn

@@ -4,3 +4,5 @@
 
 [node name="Demo" type="Node"]
 script = ExtResource( "1_6gvlp" )
+
+[node name="MyNode" type="MyNode" parent="."]

src/example.cpp

@@ -1,28 +0,0 @@
-#include "example.hpp"
-
-#include <godot_cpp/core/class_db.hpp>
-
-#include <godot_cpp/classes/global_constants.hpp>
-#include <godot_cpp/classes/label.hpp>
-#include <godot_cpp/variant/utility_functions.hpp>
-
-using namespace godot;
-
-void Example::_bind_methods()
-{
-	// TODO: Static https://github.com/godotengine/godot/issues/61963
-	ClassDB::bind_method(D_METHOD("hello_extension"), &Example::hello_extension);
-}
-
-Example::Example()
-{
-}
-
-Example::~Example()
-{
-}
-
-void Example::hello_extension()
-{
-	UtilityFunctions::print("Hello GDExtension!");
-}

src/my_node.cpp

@@ -0,0 +1,27 @@
+#include "my_node.hpp"
+
+#include <godot_cpp/core/class_db.hpp>
+
+#include <godot_cpp/classes/global_constants.hpp>
+#include <godot_cpp/classes/label.hpp>
+#include <godot_cpp/variant/utility_functions.hpp>
+
+using namespace godot;
+
+void MyNode::_bind_methods()
+{
+	ClassDB::bind_method(D_METHOD("hello_node"), &MyNode::hello_node);
+}
+
+MyNode::MyNode()
+{
+}
+
+MyNode::~MyNode()
+{
+}
+
+void MyNode::hello_node()
+{
+	UtilityFunctions::print("Hello Node!");
+}

src/my_node.hpp

@@ -8,16 +8,16 @@
 
 using namespace godot;
 
-class Example : public Node
+class MyNode : public Node
 {
-	GDCLASS(Example, Node);
+	GDCLASS(MyNode, Node);
 
 protected:
 	static void _bind_methods();
 
 public:
-	Example();
-	~Example();
+	MyNode();
+	~MyNode();
 
-	void hello_extension();
+	void hello_node();
 };

src/my_singleton.cpp

@@ -0,0 +1,27 @@
+#include "my_singleton.hpp"
+
+#include <godot_cpp/core/class_db.hpp>
+
+#include <godot_cpp/classes/global_constants.hpp>
+#include <godot_cpp/classes/label.hpp>
+#include <godot_cpp/variant/utility_functions.hpp>
+
+using namespace godot;
+
+void MySingleton::_bind_methods()
+{
+	ClassDB::bind_method(D_METHOD("hello_singleton"), &MySingleton::hello_singleton);
+}
+
+MySingleton::MySingleton()
+{
+}
+
+MySingleton::~MySingleton()
+{
+}
+
+void MySingleton::hello_singleton()
+{
+	UtilityFunctions::print("Hello Singleton!");
+}

src/my_singleton.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <godot_cpp/classes/object.hpp>
+#include <godot_cpp/classes/global_constants.hpp>
+#include <godot_cpp/classes/viewport.hpp>
+
+#include <godot_cpp/core/binder_common.hpp>
+
+using namespace godot;
+
+class MySingleton : public Object
+{
+	GDCLASS(MySingleton, Object);
+
+protected:
+	static void _bind_methods();
+
+public:
+	MySingleton();
+	~MySingleton();
+
+	void hello_singleton();
+};

src/register_types.cpp

@@ -4,17 +4,25 @@
 
 #include <godot_cpp/core/class_db.hpp>
 #include <godot_cpp/core/defs.hpp>
+#include <godot_cpp/classes/engine.hpp>
 #include <godot_cpp/godot.hpp>
 
-#include "example.hpp"
+#include "my_node.hpp"
+#include "my_singleton.hpp"
 
 using namespace godot;
 
+static MySingleton *_my_singleton;
+
 void gdextension_initialize(ModuleInitializationLevel p_level)
 {
 	if (p_level == MODULE_INITIALIZATION_LEVEL_SCENE)
 	{
-		ClassDB::register_class<Example>();
+		ClassDB::register_class<MyNode>();
+		ClassDB::register_class<MySingleton>();
+
+		_my_singleton = memnew(MySingleton);
+		Engine::get_singleton()->register_singleton("MySingleton", _my_singleton);
 	}
 }
 
@@ -22,6 +30,8 @@ void gdextension_terminate(ModuleInitializationLevel p_level)
 {
 	if (p_level == MODULE_INITIALIZATION_LEVEL_SCENE)
 	{
+		Engine::get_singleton()->unregister_singleton("MySingleton");
+		memdelete(_my_singleton);
 	}
 }