diff --git a/src/MultilevelAStarEx.cpp b/src/MultilevelAStarEx.cpp
index f0118c0..65114d1 100644
--- a/src/MultilevelAStarEx.cpp
+++ b/src/MultilevelAStarEx.cpp
@@ -138,8 +138,6 @@ MultilevelAStarEx::MultilevelAStarEx()
 	_pass = 0;
 }
 
-MultilevelAStarEx::~MultilevelAStarEx() { }
-
 void MultilevelAStarEx::init(const Rect2i &region)
 {
 	DEV_ASSERT(!_init);
diff --git a/src/MultilevelAStarEx.h b/src/MultilevelAStarEx.h
index 3d12436..1f1a833 100644
--- a/src/MultilevelAStarEx.h
+++ b/src/MultilevelAStarEx.h
@@ -24,6 +24,12 @@ public:
 		UNUSED, OPEN, CLOSED
 	};
 
+	Node(const Node &other) = default;
+	Node(Node &&other) noexcept = default;
+	~Node() noexcept = default;
+	Node& operator=(const Node &other) = default;
+	Node& operator=(Node &&other) noexcept = default;
+
 private:
 	bool hasUnit;
 	TerrainType terrainType;
@@ -50,6 +56,23 @@ class MultilevelAStarEx : public godot::RefCounted
 {
 	GDCLASS(MultilevelAStarEx, godot::RefCounted)
 
+public:
+	MultilevelAStarEx();
+
+	MultilevelAStarEx(const MultilevelAStarEx &other) = delete;
+	MultilevelAStarEx(MultilevelAStarEx &&other) noexcept = delete;
+	~MultilevelAStarEx() noexcept = default;
+	//MultilevelAStarEx& operator=(const MultilevelAStarEx &other) = delete; // already "removed" by GDCLASS
+	MultilevelAStarEx& operator=(MultilevelAStarEx &&other) noexcept = delete;
+
+	void init(const godot::Rect2i &region);
+	godot::Rect2i get_region() const;
+	void set_terrain(const godot::Vector2i &cell, TerrainType type);
+	TerrainType get_terrain(const godot::Vector2i &cell) const;
+	void set_unit(const godot::Vector2i &cell, bool blocked);
+	bool get_unit(const godot::Vector2i &cell) const;
+	godot::TypedArray<godot::Vector2i> find_path(const godot::Vector2i &from, const godot::Vector2i &to, bool return_closest);
+
 private:
 	bool _init;
 	int _pass;
@@ -64,18 +87,6 @@ private:
 
 protected:
 	static void _bind_methods();
-
-public:
-	MultilevelAStarEx();
-	~MultilevelAStarEx();
-
-	void init(const godot::Rect2i &region);
-	godot::Rect2i get_region() const;
-	void set_terrain(const godot::Vector2i &cell, TerrainType type);
-	TerrainType get_terrain(const godot::Vector2i &cell) const;
-	void set_unit(const godot::Vector2i &cell, bool blocked);
-	bool get_unit(const godot::Vector2i &cell) const;
-	godot::TypedArray<godot::Vector2i> find_path(const godot::Vector2i &from, const godot::Vector2i &to, bool return_closest);
 };
 
 VARIANT_ENUM_CAST(TerrainType);