Class: RPS

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

Overview

START

Constant Summary collapse

CHOICES = 
[['r', 'rock'], ['p', 'paper'], ['s', 'scissors']]
NTRY_TO_SYM = 
{
    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 = 
NTRY_TO_SYM.keys
COMPUTER_CHOICES = 
NTRY_TO_SYM.values
WINNERS = 
[
    [:SCISSORS, :PAPER   ],
    [:PAPER   , :ROCK    ],
    [:ROCK    , :SCISSORS]
]
LOSERS = 
WINNERS.map { |winning_choice,losing_choice| [losing_choice,winning_choice] }

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RPS

Returns a new instance of RPS.



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# File 'lib/rps.rb', line 52

def initialize
    @player_score = @computer_score = @ties = 0
end

Class Method Details

.startup ⇒ Object 



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# File 'lib/rps.rb', line 37

def startup()
    puts "|=====================|"
    puts "| Rock Paper Scissors |"
    puts "|---------------------|"
    puts "| Made by: bag33188   |"
    puts "|=====================|"  
    print  "\r\nYou are about to enter a rock-paper-scissors best of 3 match.\r\n"
    print "\r\nPress the return/enter key to continue..."
    gets
    print "\r\n"
end

Instance Method Details

#final_outcome(pl, co) ⇒ Object 



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# File 'lib/rps.rb', line 108

def final_outcome(pl, co)
    return :WIN  if pl > co
    return :LOSE if pl < co
    # return :TIE if pl == co
end

#play(winning_score) ⇒ Object 



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# File 'lib/rps.rb', line 56

def play(winning_score)
    while @player_score < winning_score && @computer_score < winning_score
        puts "\r\nPlayer score: #{@player_score}, " +
            "Computer score: #{@computer_score}, Ties: #{@ties}.\r\n"
        player = player_choice
        computer = COMPUTER_CHOICES.sample # chooses a random option
        puts "\r\nPlayer chooses #{player.to_s.downcase}."
        puts "Computer chooses #{computer.to_s.downcase}.\r\n"
        case player_outcome [player, computer]
        when :WIN
            printf "\r\n%s beats %s, player wins the round. \r\n" % [player.to_s.capitalize, computer.to_s.downcase]
            @player_score += 1
        when :LOSE
            printf "\r\n%s beats %s, computer wins the round.\r\n" % [computer.to_s.capitalize, player.to_s.downcase]
            @computer_score += 1
        else
            puts "\r\nTie, choose again\r\n"
            @ties += 1
        end
    end
    printf "\r\nFinal score:\r\nplayer: %i, computer: %i; (ties: %i).\r\n" % [@player_score, @computer_score, @ties]
    case final_outcome(@player_score, @computer_score)
    when :WIN
        puts "Player wins!\r\n"
    when :LOSE
        puts "Computer wins!\r\n"
    end
    print "\n[press the enter/return key to exit the game]"
    gets
    puts
end

#player_choice ⇒ Object 



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# File 'lib/rps.rb', line 88

def player_choice
    loop do
        print "\r\nChoose: Rock (r), Paper (p), or Scissors (s): "
        choice = gets.chomp.downcase
        if NTRY_TO_SYM.key?(choice)
            return NTRY_TO_SYM[choice]
        elsif choice != VALID_ENTRIES
            puts "\r\nThat entry is invalid. Please re-enter.\r\n"
        else
            return nil
        end
    end
end

#player_outcome(plays) ⇒ Object 



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# File 'lib/rps.rb', line 102

def player_outcome(plays)
    return :WIN  if WINNERS.include?(plays)
    return :LOSE if LOSERS.include?(plays)
    return :TIE  if !:WIN | !:LOSE
end