example random walk routine

random-walk.rb

#!/usr/bin/env ruby
#

class Rundganger
  attr_accessor :coordinates, :path

  def initialize
    @coordinates = [0,0,0]
    @path = [] << @coordinates.clone
  end

  def walk(steps = 3)
    for _i in 1.upto(steps)
      step()
      @path << @coordinates.clone
    end
  end

  def step
    axis = rand(@coordinates.length)
    direction = [1, -1].sample

    @coordinates[axis] += direction
  end
end

hans = Rundganger.new
hans.walk(10)

pp hans.path