Class: MasterMind::Tobi::GameMethods

Inherits:
Object
  • Object
show all
Defined in:
lib/mastermind/tobi/gamemethods.rb

Direct Known Subclasses

SinglePlayer

Instance Method Summary collapse

Instance Method Details

#average_string(top_ten_list, current_player) ⇒ Object

generates user’s performance compared to average



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# File 'lib/mastermind/tobi/gamemethods.rb', line 6

def average_string(top_ten_list, current_player)                                    # generates user's performance compared to average
  time_diff, guess_diff = difference(top_ten_list, current_player)
  
  "That's %s %s and %s %s %s the average\n" % [time_convert(time_diff.abs), time_diff < 0 ? "slower" : "faster",
    guess_diff.abs, guess_diff.abs == 1 ? "guess" : "guesses", guess_diff < 0 ? "more" : "fewer"]
end

#difference(top_ten_list, current_player) ⇒ Object 



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# File 'lib/mastermind/tobi/gamemethods.rb', line 13

def difference(top_ten_list, current_player)
  total_time = 0
  total_guess = 0
  
  diff_hash = top_ten_list.each{ |player| 
    total_time += player.time
    total_guess += player.guesses 
  }
  
  average_time = (total_time.to_f/top_ten_list.length).round - current_player.time
  average_guess = (total_guess.to_f/top_ten_list.length).round - current_player.guesses
  
  return average_time, average_guess
end

#get_name ⇒ Object 



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# File 'lib/mastermind/tobi/gamemethods.rb', line 85

def get_name
  name = ""
  
  while name.eql?("")
    name = gets.chomp.capitalize
    print UI::INVALID_MESSAGE if name.eql?("")  
  end
  
  name
end

#get_top_ten ⇒ Object 



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# File 'lib/mastermind/tobi/gamemethods.rb', line 41

def get_top_ten
  YAML.load_stream(File.open(UI::DB_STORE)).sort{|player1, player2|  # load player objects from db and sort by guesses/time
    by_guess = player1.guesses <=> player2.guesses                                  # first sort by guesses
    by_guess == 0 ? player1.time <=> player2.time : by_guess                        # then sort by time
  }[0...10]  if File.file?(UI::DB_STORE)                                            # pick out top ten
end

#print_history(history) ⇒ Object 



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# File 'lib/mastermind/tobi/gamemethods.rb', line 96

def print_history(history)
  if history.empty?
    print "No history yet. Enter a guess"  + UI::INPUT_PROMPT
  else
    puts ""
    puts history
    print UI::INPUT_PROMPT 
  end
end

#print_top_ten(current_player) ⇒ Object 



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# File 'lib/mastermind/tobi/gamemethods.rb', line 28

def print_top_ten(current_player)
  top_ten_list = get_top_ten
  
  puts average_string(top_ten_list, current_player) if top_ten_list.length > 1     # print out user's performance compared to average
  
  # print out top ten results
  if !top_ten_list.nil?
    puts ""
    puts UI::TOP_TEN                                                                  
    top_ten_list.each_with_index{|player, index| puts "#{index+1}. " + player.to_s }
  end
end

#store_game(sequence, guesses, time) ⇒ Object

get player name and store details to file



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# File 'lib/mastermind/tobi/gamemethods.rb', line 48

def store_game(sequence, guesses, time)      #get player name and store details to file  
  print UI::NAME_MESSAGE
  name = get_name
  current_player = Player.new(name, sequence, time, guesses)  # create new player object
  
  # write player object to file if file does not exist, or verify whether to add record from user, and write if it exists
  File.open(UI::DB_STORE, 'a'){|file| file.write(YAML.dump(current_player))} if user_permits_store?
   
  current_player
end

#user_permits_store? ⇒ Boolean

confirm from user to add record to top-scores if file exists

Returns:

  • (Boolean) 


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# File 'lib/mastermind/tobi/gamemethods.rb', line 59

def user_permits_store?                    # confirm from user to add record to top-scores if file exists
  return true if !File.exist?(UI::DB_STORE)    # if file does not exist, return true
  print UI::OVERWRITE_MESSAGE
  print UI::INPUT_PROMPT
  option_chosen = false
  
  return yes_or_no?
end

#yes_or_no? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mastermind/tobi/gamemethods.rb', line 68

def yes_or_no?
  option_chosen = false
  
  while !option_chosen
    option_chosen = true                              # assume user selects valid option so as to quit loop
    
    input = gets.chomp.downcase
    case input                                        
    when "y", "yes" then return true
    when "n", "no" then return false
    else                                               # user selects an invalid option
      print UI::INVALID_MESSAGE
      option_chosen = false
    end  
  end
end