#include <glibmm.h>
#include <iostream>

struct Vec2
{
	long x;
	long y;

	Vec2(long x, long y)
	    : x(x), y(y)
	{}
};

struct Entity
{
	Vec2 position;
	Vec2 velocity;
	Vec2 acceleration;
	const char *name;

	Entity(const char *name)
	    : position(0, 0),
	      velocity(0, 0),
	      acceleration(0, 0),
	      name(name)
	{}

	~Entity()
	{
		std::cout << "Entity " << name << " says goodbye\n";
	}
};

typedef Glib::NodeTree<Entity> ENode;

bool travFun(ENode &node)
{
	std::cout << "Traversing node: " << node.data().name << "\n";

	return false;
}

int main(int, char**)
{
	Entity root("Root");
	root.position = Vec2(10, 20);

	ENode tree(root);

	tree.append_data("child");

	tree.append_data("child2");

	tree.traverse(sigc::ptr_fun(&travFun), Glib::TRAVERSE_POST_ORDER);

	return 0;
}