Main class for Codebreaker

game.rb

module Codebreaker
  class Game
    def initialize(output)
      @output = output
    end
    
    def start(secret)
      @secret = secret
      @output.puts 'Welcome to Codebreaker!'
      @output.puts 'Enter guess:'
    end
    
    def guess(guess)
      mark = ''
      (0..3).each do |index|
        if exact_match?(guess, index)
          mark << '+'
        end
      end
      (0..3).each do |index|
        if number_match?(guess, index)
          mark << '-'
        end
      end
        
      @output.puts mark
    end #guess
    
    def exact_match?(guess, index)
      guess[index] == @secret[index]
    end #exact_match?
    
    def number_match?(guess, index)
      @secret.include?(guess[index]) && !exact_match?(guess, index)
    end #number_match
    
  end #end Game
end #end Codebreaker