Map.cs

using System;
using System.Collections.Generic;
using System.Drawing;

namespace Dungeon
{
	public class Map
	{
		public readonly MapCell[,] Dungeon;
		public readonly Point InitialPosition;
		public readonly Point Exit;
		public readonly Point[] Chests;

		private Map(MapCell[,] dungeon, Point initialPosition, Point exit, Point[] chests)
		{
			Dungeon = dungeon;
			InitialPosition = initialPosition;
			Exit = exit;
			Chests = chests;
		}
		
		public static Map FromText(string text)
		{
			var lines = text.Split(new[] { "\r", "\n" }, StringSplitOptions.RemoveEmptyEntries);
			return FromLines(lines);
		}

		public static Map FromLines(string[] lines)
		{
			var dungeon = new MapCell[lines[0].Length, lines.Length];
			var initialPosition = Point.Empty;
			var exit = Point.Empty;
			var chests = new List<Point>();
			for (var y = 0; y < lines.Length; y++)
			{
				for (var x = 0; x < lines[0].Length; x++)
				{
					switch (lines[y][x])
					{
						case '#':
							dungeon[x, y] = MapCell.Wall;
							break;
						case 'P':
							dungeon[x, y] = MapCell.Empty;
							initialPosition = new Point(x, y);
							break;
						case 'C':
							dungeon[x, y] = MapCell.Empty;
							chests.Add(new Point(x, y));
							break;
						case 'E':
							dungeon[x, y] = MapCell.Empty;
							exit = new Point(x, y);
							break;
						default:
							dungeon[x, y] = MapCell.Empty;
							break;
					}
				}
			}
			return new Map(dungeon, initialPosition, exit, chests.ToArray());
		}

		public bool InBounds(Point point)
		{
			var bounds = new Rectangle(0, 0, Dungeon.GetLength(0), Dungeon.GetLength(1));
			return bounds.Contains(point);
		}
	}
}