Hangman program

hangman.rb

# Let's play hangman!

module HangmanErrors
    class YaDunGoofedError < StandardError; end
    class HolyShitYouWon < StandardError; end
end

class TheGame
    include HangmanErrors
    attr_accessor :round

    def initialize
        puts "Well, howdy there.  Ready to play?  How many tries do you get?"
        tries = gets.chomp.to_i
        begin
            self.round = WordJumblyBumbler.new(tries)
            loop { loop_it! }
        rescue HolyShitYouWon
            puts "YOU WIN... but the princess is in another castle."
        rescue
            puts "Game.  Over."
        end
    end

    def loop_it!
        puts "Gimme a letter!"
        letter = gets.chomp
        round.try(letter)
    end
end

class WordJumblyBumbler
    include HangmanErrors
    attr_accessor :word, :partial, :tries

    def initialize(tries = 10)
        set_word!
        self.tries = tries
        self.partial = Array.new(word.size)
        puts "Right then.  You've got a word.  It's first letter is #{word[0]}" +
            " and it's last letter is #{word[-1]}.  Good luck!"
    end

    def set_word!
        self.word = ['apple', 'pear', 'banana', 'bamboo', 'mandolin', 'gondola', 'crankshaft'].sample
    end

    def try(char)
        return fail_msg unless char[/[A-z]/]
        raise YaDunGoofedError if tries < 1
        hits = word.scan(/#{char.downcase}/).size # banana & 'aa' => YOU GOT 3 HITS KIDDO
        hits == 0 ? fail_msg : boosh!(char)
        win?
    end

    def boosh!(x)
        # aw yeah, you got a letter
        word.split("").each_with_index do |char, i| #'asdf' => %w(a s d f)
            self.partial[i] = x.downcase if char == x.downcase
        end
        print_partial
    end

    def print_partial
        puts partial.map {|x| x ? x : "?"}.join("")
    end

    def stick_figure
        "O"*tries + " >\"~~~~ chomp chomp chomp"
    end

    def fail_msg
        puts "Ouch.  Not a letter!"
        self.tries -= 1
        print_partial
        puts stick_figure
    end

    def win?
        puts self.inspect
        raise HolyShitYouWon if partial.select(&:nil?).size == 0
    end
end

a = TheGame.new