Time for action – creating the TileMap module

1. Add a new module called TileMap to the Robot Rampage project.

2. Add declarations to the TileMap module:

   #Region "Declarations"
     Public Const TileWidth As Integer = 32
     Public Const TileHeight As Integer = 32
     Public Const MapWidth As Integer = 50
     Public Const MapHeight As Integer = 50
   
     Public Const FloorTileStart As Integer = 0
     Public Const FloorTileEnd As Integer = 3
     Public Const WallTileStart As Integer = 4
     Public Const WallTileEnd As Integer = 7
   
     Private _texture As Texture2D
     Private _tiles As List(Of Rectangle) = new List(Of Rectangle)()
   
     Private _mapSquares(MapWidth, MapHeight) As Integer
   
   Private _rand As Random = new Random()
     #End Region

3. Add the Initialize() method to the TileMap class:

   #Region "Initialization"
     Public Sub Initialize(texture As Texture2D)
       _texture = texture
       _tiles.Clear()
       _tiles.Add(New Rectangle(0, 0, TileWidth, TileHeight))
       _tiles.Add(New Rectangle(32, 0, TileWidth, TileHeight))
       _tiles...