xaviershay / card_game

Random Ruby utility libraries for modeling card games

CardGame

Ruby utility library for various card games.

Really just me playing around with design ideas.

Synopsis

You can compare poker hands.

require 'card_game/poker'

include CardGame

Poker.classify(Hand.build("10H JH QH KH AH")) >
Poker.classify(Hand.build("AH AD AS AC KH"))
# => true

You can calculate winning cards in Five Hundred tricks.

require 'card_game/five_hundred'

FiveHundred.winning_card(Trick.new(
  cards: Hand.build("10S JD AH 10D"),
  trump: Suit.hearts,
))
# => Card.from_string("JD")

FiveHundred.winning_card(Trick.new(
  cards: Card.array_from_string("10S JD AH 10D"),
  trump: Suit.clubs,
))
# => Card.from_string("10S")

You can play a simple game of Five Hundred. (This is experimental and incomplete.)

require 'card_game/five_hundred'

game = CardGame::FiveHundred.play(players: 4)

players = game.state.players
hand = -> player { game.state.hands.fetch(player) }

game.apply players[0].bid(6, CardGame::Suit.hearts)
game.apply players[1].pass
game.apply players[2].bid(7, CardGame::Suit.hearts)
game.apply players[3].pass
game.apply players[0].pass
game.apply players[1].pass

game.apply players[2].kitty(hand.(players[2]).take(3))

(0..9).each do
  i = players.index(game.state.priority)
  game.apply players[(i+0) % 4].play(hand.(players[(i+0) % 4])[0])
  game.apply players[(i+1) % 4].play(hand.(players[(i+1) % 4])[0])
  game.apply players[(i+2) % 4].play(hand.(players[(i+2) % 4])[0])
  game.apply players[(i+3) % 4].play(hand.(players[(i+3) % 4])[0])
end

require 'pp'
pp game.state

There are also silly monkeypatches you probably don't want to use in real life, but make for fun READMEs.

require 'card_game/core_ext'

FiveHundred.winning_card(Trick.new(
  cards: [ "A".♡, 5.♢, 10.♧, "A".♢ ],
  trump: Suit.♢,
))
# => Card.from_string("AD")

Developing

bundle install
bin/test

card_game's Issues

About the course at pluralsight

Sorry to raise ticket here directly, I feel it is hard to do that in pluralsight. I will recommend to upload the videos to Udemy, which you get more viewers.

I am current learning rspec with your course "Testing Ruby Applications with RSpect", and really thanks for giving me the chance to catch it up with this course.

But I have some issues with it.

When run with the code in some videos, I can't make it run properly. So could you please provide the codes for each video, currently I download the code zip file, it has codes only for each module, not each video.

Second, when I learn at "Gatting Started" --> "Deep Dive: Examples and example Groups", I run the command "bin/play", it is fail with below error:

$ bin/play
Could not find bank account, you cannot play

I understand I need create a new folder /tmp/bank-accounts, but what file and the file format I need provide?