Class: RockPaperScissors

Inherits:
Object
  • Object
show all
Defined in:
lib/RockPaperScissors.rb

Constant Summary collapse

CHOICES =

make choices constant (2d list)

[['r', 'rock'], ['p', 'paper'], ['s', 'scissors']]
NTRY_TO_SYM =

define an entry to symbol dictionary

{
    CHOICES[0][0] => :ROCK    , CHOICES[0][1] => :ROCK    ,
    CHOICES[1][0] => :PAPER   , CHOICES[1][1] => :PAPER   ,
    CHOICES[2][0] => :SCISSORS, CHOICES[2][1] => :SCISSORS
}
VALID_ENTRIES =

define what our valid entries out

NTRY_TO_SYM.keys
COMPUTER_CHOICES =

define possible computer choices

NTRY_TO_SYM.values
WINNERS =

define winners 2d array

[
    [:SCISSORS, :PAPER   ],
    [:PAPER   , :ROCK    ],
    [:ROCK    , :SCISSORS]
]
LOSERS =

map array for losers

WINNERS.map { |winning_choice,losing_choice| [losing_choice,winning_choice] }

Instance Method Summary collapse

Instance Method Details

#play(winning_score) ⇒ Object 



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# File 'lib/RockPaperScissors.rb', line 53

def play(winning_score)
    while @player_score < winning_score && @computer_score < winning_score
        puts "\nPlayer score: #{@player_score}, " +
            "Computer score: #{@computer_score}, Ties: #{@ties}.\n"
        player = player_choice
        computer = COMPUTER_CHOICES.sample # chooses a random option

        puts "\nPlayer chooses #{player.to_s.downcase}."
        puts "Computer chooses #{computer.to_s.downcase}.\n"
        case player_outcome [player, computer]
        when :WIN
            printf "\n%s beats %s, player wins the round. \n\n" % [player.to_s.capitalize, computer.to_s.downcase]
            @player_score += 1
        when :LOSE
            printf "\n%s beats %s, computer wins the round.\n\n" % [computer.to_s.capitalize, player.to_s.downcase]
            @computer_score += 1
        else
            puts "\nTie, choose again\n"
            @ties += 1
        end
    end
    printf "\nFinal score:\nplayer: %i, computer: %i; (ties: %i).\n\n" % [@player_score, @computer_score, @ties]
    case final_outcome(@player_score, @computer_score)
    when :WIN
        puts "\nPlayer wins!\n"
    when :LOSE
        puts "\nComputer wins!\n"
    end
    print "\n[press the enter/return key to exit game]"
    gets
    puts
end