Trek-12/source/Trek-12/Models/Rules/Rules.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Models.Rules
{
    public class Rules
    {
        public bool NearCell(Cell playerChoice, List<Cell> cells)
        {
            foreach (var item in cells)
            {
                if(playerChoice.Pos.X == item.Pos.X +1 || playerChoice.Pos.X == item.Pos.X - 1
                    || playerChoice.Pos.Y == item.Pos.Y +1 || playerChoice.Pos.Y == item.Pos.Y -1 )
                {
                    return true;
                }
            }
            return false;
        }

        public bool IsCellEmpty(Cell playerChoice)
        {
            if (playerChoice.Value == null)
            {
                return true;
            }

            return false;
        }

        public bool IsCellValid(Cell playerChoice, List<Cell> cells)
        {
            if (NearCell(playerChoice, cells) && IsCellEmpty(playerChoice))
            {
                return true;
            }

            return false;
        }
    }
}