#include <iostream>
#include <memory>
#include <functional>

class Thing {
public:
	void move( float x ) {
		std::cout << "moving with " << x << std::endl;
	}
};

class Other {
public:
	using CallbackFunction = std::function<void(float)>;
public:
	void go() {
		mCallback( 42 );
	}

	void setCallback( CallbackFunction func ) {
		mCallback = func;
	}

protected:
	std::function<void(float)> mCallback;
};

int main() {
	using namespace std;

	auto thing = make_shared<Thing>();
	auto other = make_shared<Other>();

	other->setCallback( std::bind( &Thing::move, thing.get(), std::placeholders::_1 ) );

	other->go();

	return 0;
}