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using System;
using System.Collections.Generic;
using System.Text;

namespace NuriProg.Model
{
    public enum SquareType : byte
    {
        Wall = 1,
        Room = 2,
        Unknown = 4
    }

    public delegate void SquareChanged(Square sender);
    

    public sealed class Square
    {
        private readonly int hashcode;
        public override int GetHashCode()
        {
            return hashcode;
        }

        public event SquareChanged Change;
        private Model parent;
        public NuriProg.View.GridSquare View {get; set;}
        public int RemainingRoomSize { get; set; }

        public Square Owner{get;set;}

        private HashSet<Square> groupMembers;
        public HashSet<Square> GroupMembers
        {
            get
            {
                return Owner.groupMembers;                
            }
            set
            {
                groupMembers = value;
            }
        }


        public bool IsSharedRoom { get; set; }
        public bool Guess { get; set; }
        public int Level { get; set; }
        public Square[] Neighbors { get; set; }
        public Square[] FullNeighbors { get; set; }
        public byte X { get; private set; }
        public byte Y { get; private set; }
        public short RoomSize {get;private set;}
        

        private SquareType roomType;
        public SquareType RoomType
        {
            get { return roomType; }
            set
            {
                roomType = value;
                Level = parent.Level;
                if (Change!=null) Change(this);
            }
        }

        public Square(short size, byte x, byte y, Model parent)
        {
            RemainingRoomSize = 0;
            IsSharedRoom = false;
            Owner = null;
            this.parent = parent;
            Guess = false;
            Level = 0;
            X = x;
            Y = y;
            this.hashcode = x + y * parent.Width;
            if (size > 0)
            {
                RoomSize = size;
                RemainingRoomSize = size;
                roomType = SquareType.Room;
                Owner = this;
                groupMembers = new HashSet<Square>();
                groupMembers.Add(this);
            }
            else
            {
                RoomSize = 0;
                roomType = SquareType.Unknown;
            }
        }
    }
}