Horse Race

interface.rb

# Player begins with 100$
# if player wins 50$
# otherwise loses 10$
# player = { wallet: 100 }

# list of a horses / race roster => Array
# ==== START LOOP ====
# display list of horses
# ask the user for the winning horse
# store user choice
# pick a random winner // run the race
# => sample (return a random item from Array)
# determine result
# print result (win or lost)
# determine if player has enough
# balance to continue
# ask user if they want to play again
# ===== END LOOP =====

require_relative 'race'
require_relative 'players'
require_relative 'welcome'

def display_horses(horses)
  horses.each_with_index do |horse, index|
    puts "#{index + 1} - #{horse}"
  end
end

def print_results(choice, winner)
  if choice == winner
  puts "Congratulations! You won!"
  else
    puts "Sorry, you lost! The winner was #{winner}"
  end
end

# interface

# Game starts
horses = [
  "Jean",
  "Shadowfax",
  "Wyatt Earp",
  "Bronco",
  "Spirit",
  "John Wayne"
]

welcome
player = create_player # hash

loop do 

  display_horses(horses)
  display_balance(player[:wallet])

  # user picks horse
  horse_index = pick_horse(horses)
  choice = horses[horse_index]

  # determine winner
  winner = pick_race_winner(horses)

  if did_player_win?(winner, choice)
    player[:wallet] = update_wallet(player[:wallet], 50)
  else
    player[:wallet] = update_wallet(player[:wallet], -10)
  end

  print_results(choice, winner)

  if player[:wallet] < 10
    puts "You have no more money! Game over!"
    break
  end

  puts "Do you want to race again?"
  print "> "
  answer = gets.chomp
  break if answer =~ /^n(o)?$/i 
end

puts "Goodbye!"

players.rb

# should return a player hash
def create_player
  puts "Enter player name:"
  print "> "
  name = gets.chomp
  # return value (hash):
  { name: name, wallet: 100}
end

# return horse index
def pick_horse(horses)
  puts "Pick a horse (1-#{horses.size})"
  print "> "
  # return value:
  gets.chomp.to_i - 1
end

def update_wallet(wallet, amount)
  wallet + amount
end

def display_balance(wallet)
  puts "You currently have $#{wallet}"
end

race.rb

def pick_race_winner(horses)
  # rand(0..horses.size)
  horses.sample
end

def did_player_win?(winner, choice)
  winner == choice
end

welcome.rb

def welcome
  puts "#################################"
  puts "###                           ###"
  puts "###        H O R S E S        ###"
  puts "###                           ###"
  puts "#################################"
  puts "\n"
  puts "Welcome to the racetrack!"
end