This script generates a matrix from a file with names

matrix.rb

# To run:
#
# Put this script in a folder with a file named "names.txt"
# The File has the format:
#   Daniel Spangenberg
#   Toni Stark
#   Iron Man
#   ...
#
# Then run:
# ruby matrix.rb CELLS SPACE SPEED
# Example:
# ruby matrix.rb 59 2 0.19

class Matrix
  class Cell
    def initialize(name)
      @position = -1
      @name = name
    end

    def character
      @position = @position + 1
      @name[@position]
    end
  end

  attr_accessor :names

  def initialize(cells, spacing, speed)
    @names = Array.new
    @cells = Array.new(cells.to_i)
    @spacing = spacing.to_i
    @speed = speed.to_f
  end

  def random_name
    names[rand(names.size)]
  end

  def new_cell
    Cell.new(random_name)
  end

  def run
    loop do
      @cells.map! do |cell|
        print " " * @spacing
        if cell.nil? && rand(2) == 1
          cell = new_cell
        end
        unless cell.nil?
          char = cell.character
          if char.nil?
            print " "
            nil
          else
            print char
            cell
          end
        else
          nil
          print " "
        end
      end
      puts
      sleep(@speed)
    end
  end
end

matrix = Matrix.new(ARGV[0], ARGV[1], ARGV[2])
File.open("names.txt", "r") do |infile|
  while (line = infile.gets)
    matrix.names.push line.split.map { |name| name.capitalize }.join(" ")
  end
end
matrix.run