C# Code example

//GRID CLASS
    public class Grid
    {
        public int x { get; set; }
        public int y { get; set; }
        public string status { get; set; }
        public int hole { get; set; }
        public Grid ()
        {
            status = "?";
        }

    }
    //ROBOT CLASS
    public class robot
    {
        public int x { get; set; }
        public int y { get; set; }
        public int item {get; set;}
        public int id {get; set;}
        public robot (int _x, int _y, int _item)
        {
            x = _x;
            y = _y;
            item = _item;
        }
    }

    public static int findOre (List<Grid> G, robot myRobot)
    {
        int index = -404; //stands for 404 - has not found any ore
        double distance = 30*30 + 15*15+1; //just a number, so my program thinks it's the biggest distance ever
        for(int i = 0; i < G.Count(); i++)
        {
            if (G[i].status != "?" && G[i].status != "0")
            {
                double newDistance = Math.Pow(myRobot.x - G[i].x,2) + Math.Pow(myRobot.y - G[i].y,2);
                if( newDistance < distance)
                {
                    distance = newDistance;
                    index = i;
                }
            }
        }
        return index;
    }

    //Methods for basic robot-functions //Basic functions for easier testing and programming
    public static void move(int x, int y) => Console.WriteLine("MOVE {0} {1}",x,y);
    public static void dig(int x, int y) => Console.WriteLine("DIG {0} {1}",x,y);
    public static void request(string x) => Console.WriteLine("REQUEST {0}",x);
    public static void wait() => Console.WriteLine("WAIT");