This was inspired by talking to some LaunchAcademy students. I was curious how I would solve it now that I have more experience.
Create a ruby program that (to a first approximation) allows for the interactive playing of blackjack.
Use the simple rules:
- One deck
- Hit or stay only
- Highest score under 21 wins
- Over 21 is a bust
- No actual betting
Handling the Ace was a pain. It's value depends on the value of the hand. Finding a logical place for the logic to calculate a score was difficult.
All of the possible routes for the game - if this, then that... Factoring the conditional logic without resorting to giant case statements was hard. There are still a few long if/else that I may try to eliminate eventually.
I don't know how to interactively test console apps, so I resorted to testing
the private control logic of the Game class directly. Not the cleanest ever,
but gives me decent security. This
gist inspired the
PrivatelyTestable superclass.
$ git clone https://github.com/shterrett/blackjack.git
$ cd blackjack
$ chmod u+x play-blackjack.rb
$ ./play-blackjack.rb