practice/WorkField/WorkField/Model/BlockList.cs

using System;
using System.Collections.Generic;
using System.Linq;

namespace WorkField.Model
{
  /// <summary>
  /// Тип блока
  /// </summary>
  public enum EBlockType
  {
    Unknown = 0,
    Wall = 1,
    Field = 2,
  }

  /// <summary>
  /// БлокСписок
  /// </summary>
  public class CBlockList
  {
    public List<CBlock> List;

    /// <summary>Initializes a new instance of the <see cref="T:System.Object" /> class.</summary>
    public CBlockList()
    {
      List = new List<CBlock>();
    }

    public int GetWidth()
    {
      int iMaxX = 0;
      foreach (var pB in List) {
        if (pB.X > iMaxX) {
          iMaxX = pB.X;
        }
      }

      return iMaxX;
    }

    public int GetHeight()
    {
      int iMaxY = 0;
      foreach (var pB in List) {
        if (pB.Y > iMaxY) {
          iMaxY = pB.Y;
        }
      }

      return iMaxY;
    }


    /// <summary>
    /// Ищет элемент в позиции
    /// </summary>
    /// <param name="iX"></param>
    /// <param name="iY"></param>
    /// <returns></returns>
    public CBlock Find(int iX, int iY)
    {
      CBlock el = List
        .FirstOrDefault(block => 
          block.X == iX && block.Y == iY);
      //CBlock el = null;
      //foreach (CBlock block in List) {
      //  if (block.X == iX && block.Y == iY) {
      //    el = block;
      //    break;
      //  }
      //}


      return el;
    }

    public bool Add(int iX, int iY, EBlockType enType)
    {
      CBlock pp = Find(iX, iY);
      if (pp != null) {
        return false;
      }

      switch (enType) {
        case EBlockType.Field:
          List.Add(new CFieldBlock() { X = iX, Y = iY });
          break;
        case EBlockType.Wall:
          List.Add(new CWallBlock() { X = iX, Y = iY });
          break;
        case EBlockType.Unknown:
          throw new ArgumentOutOfRangeException(nameof(enType), enType, null);
      }

      return true;

    }
  }
}