ruby version of 03 Animals

03 Animal/ruby/animal.rb

@@ -0,0 +1,95 @@
+require 'set'
+
+def intro
+  puts "                                ANIMAL
+               CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY
+
+
+
+PLAY 'GUESS THE ANIMAL'
+
+THINK OF AN ANIMAL AND THE COMPUTER WILL TRY TO GUESS IT.
+
+"
+end
+
+def ask(question)
+  print "#{question} "
+  (gets || '').chomp.upcase
+end
+
+Feature = Struct.new(:question, :yes_guess, :no_guess)
+
+def add_guess(animals, guess)
+  guess.is_a?(Struct) ? get_all_animals(guess, animals) : animals.add(guess)
+end
+
+def get_all_animals(feature, animals = Set.new)
+  add_guess(animals, feature.yes_guess)
+  add_guess(animals, feature.no_guess)
+  animals
+end
+
+def create_feature(current_animal)
+  new_animal = ask('THE ANIMAL YOU WERE THINKING OF WAS A ?')
+  puts "PLEASE TYPE IN A QUESTION THAT WOULD DISTINGUISH A #{new_animal} FROM A #{current_animal}"
+  question = ask('?')
+  loop do
+    yes_no = ask("FOR A #{new_animal} THE ANSWER WOULD BE ?")
+    next unless ['Y', 'N'].include?(yes_no[0])
+    guesses = yes_no[0] == 'Y' ? [new_animal, current_animal] : [current_animal, new_animal]
+    return Feature.new(question, *guesses)
+  end
+end
+
+def guess_loop(feature)
+  loop do
+    answer = ask(feature.question)
+    next unless ['Y', 'N'].include?(answer[0])
+    answer_is_yes = answer[0] == 'Y'
+
+    name = answer_is_yes ? feature.yes_guess : feature.no_guess
+    if name.is_a?(Struct)
+      feature = name
+      next
+    end
+
+    guess = ask("IS IT A #{name}?")
+    correct_guess = guess[0] == 'Y'
+
+    if correct_guess
+      puts "WHY NOT TRY ANOTHER ANIMAL?"
+      break
+    end
+
+    if answer_is_yes
+      feature.yes_guess = create_feature(name)
+    else
+      feature.no_guess = create_feature(name)
+    end
+    break
+  end
+end
+
+def main
+  intro
+  feature = Feature.new('DOES IT SWIM?', 'FISH', 'BIRD')
+
+  while true do
+    option = ask("ARE YOU THINKING OF AN ANIMAL?")
+    if option == 'LIST'
+      puts
+      puts "ANIMALS I ALREADY KNOW ARE:"
+      puts get_all_animals(feature).to_a.join(" " * 15)
+      puts
+    elsif option[0] == 'Y'
+      guess_loop(feature)
+    elsif option == ''
+      puts
+    end
+  end
+end
+
+trap "SIGINT" do puts; exit 130 end
+
+main