Time for action – dealing with map squares

1. Add methods to the TileMap class that deal with map squares and translate pixel coordinates into map square references:

   #region Information about Map Squares
   
   static public int GetSquareByPixelX(int pixelX)
   {
       return pixelX / TileWidth;
   }
   
   static public int GetSquareByPixelY(int pixelY)
   {
       return pixelY / TileHeight;
   }
   
   static public Vector2 GetSquareAtPixel(Vector2 pixelLocation)
   {
       return new Vector2(
           GetSquareByPixelX((int)pixelLocation.X),
           GetSquareByPixelY((int)pixelLocation.Y));
   }
   
   static public Vector2 GetSquareCenter(int squareX, int squareY)
   {
       return new Vector2(
           (squareX * TileWidth) + (TileWidth / 2),
           (squareY * TileHeight) + (TileHeight / 2));
   }
   
   static public Vector2 GetSquareCenter(Vector2 square)
   {
       return GetSquareCenter(
           (int)square.X,
           (int)square.Y);
   }
   
   static public Rectangle SquareWorldRectangle(int x, int y)
   {
       return new Rectangle(
           x * TileWidth,
      ...