//

class Player
{
	void move()
	{
		move(speed);
		moveNotification();
	}
}

class DAPlayer : Player
{
	void moveNotification() override
	{
		sendText("You are moving %s", this->speed);
	}
}

//
Perhaps just callbacks.

class Player
{
	void Move()
	{
		player.Move();
		moveNotification();
	}

	moveNotification()
	{
		Callbacks(moveCallback).Call(position); // Perhaps only share the position.
        // Rather than the whole object.
        // Otherwise, we may need to add some getters.
	}

	addNotification(type, callback)
	{
		Callbacks.Insert(type, callback);
	}
}

//
Perhaps a decorator since yegor loves them

class Player
{
	void move()
	{
		jump(); // Here's a problem. The player will not get notified since it will not call the decorator.
	}

	void jump()
	{

	}
}

class DAPlayer
{
	Player(IPlayer) { }

	void move()
	{
		player.move();
		player.sendText("You are moving %s", player.speed);
	}

	void jump()
	{
		player.jump();
		player.sendText("You are jumping %s", player.speed);
	}
}