Jeremy's WordGuess Game!

word_guess.rb

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+class WordGuess
+  def initialize(debug = false)
+    # are we in debug mode?
+    @debug = debug
+
+    # possible words, selected at random
+    @words = {
+      "e" => %w(dog cat bug hat cap lit kin fan fin fun tan ten tin ton),
+      "m" => %w(plain claim brine crime alive bride skine drive slime stein jumpy),
+      "h" => %w(
+          machiavellian prestidigitation plenipotentiary quattuordecillion
+          magnanimous unencumbered bioluminescent circumlocution
+        )
+    }
+
+    # players attempts allowed by difficulty
+    @tries = {
+      "e" => 10,
+      "m" => 6,
+      "h" => 4
+    }
+
+    # ask the user to set the game mode
+    mode = set_mode
+
+    @word    = @words[mode].sample # chosen word; players try to guess this
+    @guesses = @tries[mode] # how many tries the player gets
+    @user_word = "•" * @word.length # a "blank word" for user output
+    @guessed = [] # keep track of letters that have been guessed
+
+    # debugging?
+    if @debug
+      puts "Your word is #{ @word }."
+    end
+
+    # user messages
+    puts "You have #{ @guesses } guesses."
+    puts "Guess the word: #{ @user_word }"
+
+    # start the first turn
+    play_turn
+  end
+
+  def play_turn
+    # a turn begins by asking a player for their guess
+    letter = ask_for_letter
+
+    # update the word with the letter, maybe
+    update_user_word!(letter)
+
+    # decrement the available guesses
+    # unless the letter matches and it's not already in the @guessed array
+    lose_a_turn?(letter)
+
+    # push the letter into the guessed array, if we need to
+    add_to_guessed(letter)
+
+    # debugging
+    puts "Previous guesses: #{ @guessed.join(" ") }"
+    puts "You guessed #{ letter }. The word is now #{ @user_word }."
+    puts "You have #{ @guesses } guesses left."
+
+    # determine if the player has won or lost
+    if won?
+      end_game(true)
+    elsif lost?
+      end_game(false)
+    else # play another turn if we haven't won or lost
+      play_turn
+    end 
+  end
+
+  private
+
+  def add_to_guessed(letter)
+    # push the letter to the array, then get rid of duplicates.
+    @guessed.push(letter.upcase).uniq!
+  end
+
+  def end_game(won)
+    if won
+      puts "You wins the game! Yay! ^␣^"
+    else
+      puts "You did not wins the game. :( Next time you will, I bet. <3"
+    end
+    exit # game over!
+  end
+
+  def won?
+    # we win when the user has guessed all the letters to the word
+    @word == @user_word
+  end
+
+  def lost?
+    # we lose when the user is out of guesses and has not guessed the word
+    !won? && @guesses <= 0
+  end
+
+  def lose_a_turn?(letter)
+    # if the guessed letter isn't part of the word and
+    # the guessed letter isn't already in the list of guesses
+    if [email protected]?(letter) && [email protected]?(letter.upcase)
+      @guesses -= 1
+    end
+  end
+
+  def set_mode
+    mode = ""
+    until %w(e m h).include? mode
+      print "\nThis can be (e)asy, (m)edium or really (h)ard. The choice is yours: "
+      mode = gets.chomp
+    end
+
+    mode
+  end
+
+  def update_user_word!(letter)
+    @word.chars.each_index do |index|
+      @user_word[index] = letter if @word[index] == letter
+    end
+  end
+
+  def ask_for_letter
+    letter = ""
+    until ('a'..'z').include? letter
+      print "\nPlease guess a letter! (a..z): "
+      letter = gets.chomp.downcase
+    end
+
+    letter
+  end
+end
+
+WordGuess.new