play.rb

# Fetch stdgems.json if not exist

unless File.exist?('stdgems.json')
  puts "Fetching stdgems.json...\n\n"
  `curl -s -o stdgems.json https://stdgems.org/stdgems.json`
end

require 'json'

stdgems_json = File.read('stdgems.json')
stdgems = JSON.parse(stdgems_json)

game_gems = stdgems['gems'].sample(10)

score = 0

puts "Welcome to the RubyGems game!\n"
puts "Do you know your gems? Let's find out.\n\n"
puts "You will be given a gem name and four descriptions."
puts "Choose the correct description for the gem name."
puts "You will be given 10 gems to guess."
puts "You will get 1 point for each correct guess and lose 1 point for each incorrect guess.\n\n"
puts "Let's get started!\n\n"

gets

high_score = File.read('high_score.txt').to_i rescue nil
puts "High score: #{high_score || 'None yet'}"

game_gems.each do |gem|
  game_choices = [gem['description'], stdgems['gems'].sample['description'], stdgems['gems'].sample['description'], stdgems['gems'].sample['description']].shuffle


  puts "Current score: #{score}\n\n"

  puts "What is the description for the gem named '#{gem['gem']}'?"

  game_choices.each_with_index do |choice, index|
    puts "#{index + 1}. #{choice}"
  end

  puts "Enter your answer: "
  answer = gets.chomp.to_i

  if game_choices[answer - 1] == gem['description']
    puts "Correct!"
    score += 1
  else
    score -= 1
    puts "Incorrect!"
  end

  puts "\n\n-------\n\n"
end

puts "Final score: #{score}"

high_score = File.write('high_score.txt', score) if high_score.nil? || score > high_score

To play:

curl -sL https://gist.github.com/ericboehs/48c51a930770b78831a297c12857b2fb/raw/play.rb > play.rb
ruby play.rb