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Implementing the WeaveGrid Class

Implementing the WeaveGrid Class

Learn how to display the weave maze on the console in Ruby.

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The WeaveGrid class

Let's implement our WeaveGrid class, which manages the two different cell types highlighted below.

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require 'grid'
require 'weave_cells'
class WeaveGrid < Grid
  def initialize(rows, columns)
    @under_cells = [] 
    super
  end
  def prepare_grid
    Array.new(rows) do |row|
      Array.new(columns) do |column|
        OverCell.new(row, column, self) 
      end
    end
  end
  def tunnel_under(over_cell) 
    under_cell = UnderCell.new(over_cell)
    @under_cells.push under_cell
  end
  def each_cell
    super
    @under_cells.each do |cell| 
      yield cell
    end
  end
end

Code explanation

Line 6: The constructor doesn’t add much, just initializing a new array, @under_cells, that will be used to hold the under-cells that get created.

Line 18: Here, the creation of those cells is managed by the tunnel_under method.

Line 26: We also need to make sure that our each_cell method doesn’t ignore under-cells. It needs to report every ...

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