zoltar_app.rb

require './zoltar_module'
require './zoltar_helper'
include ZoltarSpeaks

intro
greeting
shall_we
which_fortune
answer = promptd

if answer == sign
  sign
else
  crystal_ball
end

end_game

zoltar_helper.rb

# This formats the paragraph, separating comments for clarity.
def format1
  puts
  puts "---------------"
  puts
end

# This provides spacing between comments.
def format2(text)
  puts
  puts text
end

# This is what happens when the game ends.
def end_game
  format1
  puts "Would you like to play again? (Y/N)"
  play_again = promptd
  if play_again == "y"
    format1
    replay
  elsif play_again == "n"
    exit
  else
    format1
    puts "Zoltar does not care for your response."
    end_game
  end
end

# This loops the game so it can be played repeatedly.
def replay
  format1
  which_fortune
  answer = promptd

  if answer == sign
    sign
  else
    crystal_ball
  end

  end_game
end

# This takes input and downcases it.
def promptd
  gets.chomp.downcase
end

# This takes input and upcases it.
def promptc
  gets.chomp.capitalize
end

# This gets input for the purpose of the test.
def empty_variable(var)
  if var == nil
    promptd
  else
    var
  end
end

# Zoltar speaks mysteriously
def say_something_mysterious
  @remarks  = [
    "The spirits are strong today.",
    "You have come at an auspicious time...",
    "I've been expecting you.",
    "My metaphysical wisdom is at your disposal."
  ]
  top_index = @remarks.size - 1
  @random_index = rand(0..top_index)
  @remarks[@random_index]
end

# Generates random horoscope fortune.
def horoscope_fortune
  @sign = [
    "I am sorry, my child. I see misfortune in your fortune.",
    "3 is your lucky number. Look out for it.",
    "Yikes! You will be hit by a truck on your way out of here.",
    "When the stars align it shall be your time. Don't miss it.",
    "Love is right around the corner.",
    "Some fortunes are better than others. This one's a dud."
  ]
  top_index = @sign.size - 1
  random_index = rand(0..top_index)
  @sign[@random_index]
end

# Generates random crystal ball fortune.
def crystal_ball_fortune
  @crystal_ball = [
    "Heavy thoughts are weighing on you.",
    "Zombies will attack you on the fortnight.",
    "You'll win $1 million, but due to an error, it's in pennies.",
    "Help! Zoltar is holding me hostage in this ball!",
    "You'd be wise to stay away from Wall Street.",
    "Only Tom Hanks gets to be Big."
  ]
  top_index = @crystal_ball.size - 1
  @random_index = rand(0..top_index)
  @crystal_ball[@random_index]
end

zoltar_module.rb

require "./zoltar_helper"

#Zoltar Speaks
#This is a text adventure REPL game.
#The game begins at the table of the all knowing Zoltar.

module ZoltarSpeaks

  # This sets the scene for the game and sets the game in motion.
  def intro
    format1
    puts <<-HERE

    You stumble through a strange door in order to escape a
    sudden rain storm. You encounter a strange, bejeweled man
    in a funny hat. As you try to get your bearings, he speaks...

    HERE
  end

  # Zoltar introduces himself and says something mysterious
  def greeting
    format1
    puts "Greetings, I am Zoltar. #{say_something_mysterious}"
  end

  # Zoltar asks if you wish to play.
  def shall_we
    puts "You wish to know your future, dont't you, my child."
    format2 "Is this true? (Y/N)"
    play = empty_variable(play)
    if play == "n"
      format1
      puts "You do not seek the mighty wisdom of Zoltar?"
      puts "You are wasting my time. Get out of here!"
      format2
      end_game
    elsif play == "y"
      format1
      puts "Zoltar will tell you what you need to know."
    else
      format1
      puts "Zoltar does not care for your response."
      shall_we
    end
  end

  # User chooses fortune type.
  def which_fortune
    format2 "Shall I read your Horoscope or would you rather"
    puts "I peer into my Crystal Ball?"
    format2 "Options: Horoscope, Crystal Ball"
    answer = empty_variable(answer)
    if answer == "horoscope"
      format1
      puts "Of course,my child."
      sign
    elsif answer == "crystal ball"
      format1
      puts "As you wish my child."
      crystal_ball
    else
      format1
      puts "Zoltar does not care for your response."
      which_fortune
    end
  end

  # This gets users astrological sign and gives Horoscope.
  def sign
    format2 "What is your astrological sign?"
    astro_sign = promptc
    if ["Aquarius","Aries","Cancer","Capricorn","Gemini",
    "Leo","Libra","Pisces","Sagittarius","Scorpio","Taurus","Virgo"].include?(astro_sign)
      format2 "#{horoscope_fortune}"
      end_game
    else
      puts "Zoltar does not care for your response."
      sign
    end
  end

  # This gives Crystal Ball fortune.
  def crystal_ball
    puts "As I gaze into the infinite...what's this I see...?"
    format2 "#{crystal_ball_fortune}"
    end_game
  end
end

zoltar_test.rb

require "./zoltar_module"
include ZoltarSpeaks

# This tests a successful user case.
def pass_test
  play = "y"
  answer = "crystal ball"
end

# This tests that users will be reprompted
#when errors are made.
def fail_test
  play = "t"
  answer = "horscope"
end