using System;

public class Program

{

    public static void Main()

    {   

        Person dog = new Dog();

        dog.Pathfinding.MakeFriendlySound();

    }

    public class Dog : Person {

        public Dog() : base(new WorkerPathfinding()) 

        {

        }       

    }   

    public abstract class Person

    {

        public IPathfinding Pathfinding { get; private set; }

        public Person(IPathfinding pathfinding)

        {

            this.Pathfinding = pathfinding;

        }

    }

    public interface IPathfinding

    {

        void MakeFriendlySound();

        void MakeAngrySound();

    }

    public class WorkerPathfinding : IPathfinding

    {

        public void MakeFriendlySound()

        {

            Console.WriteLine("Woef");

        }

        public void MakeAngrySound()

        {

            Console.WriteLine("Grrrr");

        }

    }

    public class GuestPathfinding : IPathfinding

    {

        public void MakeFriendlySound()

        {

        }

        public void MakeAngrySound()

        {

        }

    }

    public class Grid

    {

        public int MaxCells {get; set;}

        public int CellSize {get; set;}

        public Grid()

        {

            MaxCells = 10;

            CellSize = 10;

        }

        public void createGrid()

        {

            for (int x = 0; x < MaxCells; x++)

            {

                for (int y = 0; y < MaxCells; y++)

                {

                }

            }

        }

    }

}