inheritance_composition_modules.rb

module BreatheFire
  def breathe_fire
    "WOOOOOVM *sizzle* WOOOOOVM *sizzle*"
  end
end

module ShootsLasersFromEyes
  def shoot_lasers_from_eyes
    "Pew pew pew!"
  end
end

class JaclynAnimals
  attr_reader :name
  attr_accessor :job

  def initialize(options = {})
    @name = options.fetch(:name)
    @job = options.fetch(:job, "unemployed")
  end

end

# An employed dog that commutes on a unicorn
class Dog < JaclynAnimals
  attr_accessor :transportation

  def initialize(options = {})
    super
    @name = options.fetch(:name, "Dog Doe")
  end
end

# a fire-breathing unicorn that shoots laser eyes and dances for a living
class Unicorn < JaclynAnimals
  attr_accessor :transportation

  include BreatheFire, ShootsLasersFromEyes

  def initialize(options = {})
    super
    @job = options.fetch(:job, "break dancer")
    @name = options.fetch(:name, "Dog Doe")
  end
end

# this pony breathes fire and can shapeshift while at work as a scientist
class ShetlandPony < JaclynAnimals
  attr_reader :shape

  include BreatheFire

  def initialize(options = {})
    @name = options[:name] || "Pony Doe"
    @shape = options[:shape] || "pony"
    @job = options[:job] || "pony king"
  end

  def shapeshift(shape)
    @shape = shape
  end

end

# not only a backup dancer, but also can shoot lasers from eyes and when necessary, can have a best friend
class Shark < JaclynAnimals
  attr_accessor :bestie

  include ShootsLasersFromEyes

  def initialize(options = {})
    @name = options[:name] || "Shark Dough"
    @job = options[:job] || "Shark Week Announcer"
  end

end

# a musically-inclined, teleporting Alien with laser eyes and a job with their best friend
class Alien
end