From: Wik <wikikie@...>
Date: 2011-03-28T02:15:25+09:00
Subject: A greenhand rubyist program -- ask for comments

Dear all,
I am a newbie in programming and ruby.
I have tried to learn ruby via practicing.
And here is a simple program I have just written for fun.
I would like to get some comments for improvement from you.
Thank you for your time in prior.
(Well, this is a little old game for guessing a word.)

******************************************************************************************************************************************************

class Words
	attr_reader :word
	WORDS_LIST = %w(linux window mac office perl python ruby java
smalltalk fortan pascal)

	def initialize
		WORDS_LIST.shuffle!
		@word = WORDS_LIST[rand(WORDS_LIST.size - 1)]
	end

	def word_length
		@word.size
	end
end


class Interface
	attr_reader :secret, :s_length, :secret_array, :letters

	def initialize
		@secret = Words.new.word
		@secret_array = @secret.split(//)
		@s_length = secret_length
		@letters = ("a".."z").to_a
		show_blurred_word([])
		main_loop([])
	end

	def secret_length
		length = secret.size
	end

	def getting_input
		input = gets.chomp
		input.strip
	end

	def analysis_input(input)
		case input
		when "a".."z"
			delete_from_letters_list(input)
			guessing(input)
		when "hints"
			puts "You are cheating. The word is #@secret."
			nil
		when "exit"
			puts "Goodbye"
			exit
		end
	end

	def print_remained_letters
		puts "The remaining letters list: (or exit/hints) "
		p letters
	end

	def guessing(letter)
		matched_idx = []
		secret_array.each_with_index do |char, idx|
			if char == letter
				matched_idx << idx
			end
		end
		matched_idx
	end

	def show_blurred_word(matched_array)
		if matched_array.empty?
			print " _ " * s_length
		else
			secret_array.each_with_index do |obj, idx|
				if matched_array.include? idx
					print " #{@secret_array[idx]} "
				else
					print " _ "
				end
			end
		end
		puts "\n"
	end

	def delete_from_letters_list(letter)
		letters.delete(letter)
	end

	def greeting
		print "Please enter a letter to guess: "
	end

	def main_loop(matched_array)
		print_remained_letters
		greeting
		user_input = getting_input
		checked = analysis_input(user_input)
		if checked != nil
			matched_array << checked
		end
		if matched_array.nil?
			main_loop(matched_array)
		else
			matched_array.flatten!
			matched_array.uniq!
			show_blurred_word(matched_array)
			if matched_array.size == s_length
				print "You got it! The word is #@secret!\n"
			else
				main_loop(matched_array)
			end
		end
	end
end

Interface.new

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