Jeff Trudeau's "Engine Yard Lucky 13 Content Entry"

gistfile1.rb

// Copyright Jeff Trudeau
require 'json'
require 'net/http'
require 'uri'

puts 'Welcome, a bet of -1 will end the game.'
earnings = 0
while (true)
  puts 'Your earnings are '.concat(earnings.to_s).concat('. Please place your bet.')
  bet = gets.to_f
  if bet > -1
    earnings -= bet
    winner = JSON.parse(Net::HTTP.get(URI.parse('http://roulette.engineyard.com/')))['winning_number']
    if winner == '13'
      earnings += (winnings = bet * 35)
      puts 'Lucky you, you won '.concat((winnings).to_s)
    else
      puts 'Sorry, the winning number was '.concat(winner)
    end
  else
    break
  end
end
puts 'Your total earnings are '.concat(earnings.to_s).concat('. Thanks for playing!')