Mazes for Programmers/

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Implementing the WeaveGrid Class

Implementing the WeaveGrid Class

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

We'll cover the following...

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 ...