horses.rb

# Welcome user
# Display list of horses / roster [array]
# User picks a horse
# Randomly select winning horse (sample) / (shuffle)
# Determine if user won
# Display results
# Ask user if they want to play again

#            0         1              2               3
HORSES = ["Bronco", "Tweaker", "Michael Bolton", "Jack Sparrow", "John Wayne"]

puts "*****************************"
puts "***                       ***"
puts "***      H O R S E S      ***"
puts "***                       ***"
puts "*****************************"
puts " Welcome to the racetrack!"
puts "\n\n"

loop do
  puts "Pick a horse:"
  HORSES.each_with_index do |horse, index|
    puts "#{index + 1} - #{horse}"
  end

  print "> "
  choice = gets.chomp

  # Need to ensure choice is between 0 and the last index of horses
  until choice.match(/[1-#{HORSES.length}]/)
    puts "Please pick a horse (1 to #{HORSES.length})"
    print "> "
    choice = gets.chomp
  end

  roster = HORSES.shuffle # returns a reshuffled array
  # roster = HORSES.dup

  3.times do
    roster.shuffle!
    puts "#{roster.first} is in the lead..."
    sleep(1) # sleep stops program from running for 1 second
  end

  puts ""
  puts "Race results:"
  roster.each_with_index do |horse, index|
    puts "#{index + 1} - #{horse}"
  end

  if HORSES[choice.to_i - 1] == roster.first
    puts "Congratulations! Your horse won!"
  else
    puts "Sorry, you lost!"
  end

  puts "DO you want to bet again?"
  answer = gets.chomp
  until answer.match(/y|n/i)
    puts "Please pick (y) or (n)"
    answer = gets.chomp
  end
  break if answer.downcase == "n" # || answer == "N"
end