client.rb

require "socket"

server_ip = "192.168.1.14"
client_ip = "192.168.1.5"
server_port = 22040
server_socket = UDPSocket.new

server_socket.connect(server_ip, server_port)
name = "Schorsch-Klaus-David-#{rand}"

client_deck = []
server_deck = []
money = 100

def deck_value(deck)
  if deck.include?(11)
    value_a = deck.inject(0, :+)
    value_b = deck.inject(0, :+) - 10

    if value_a <= 21
      value_a
    else
      value_b
    end
  else
    deck.inject(0, :+)
  end
end

server_socket.send("JOIN;#{name}", 0)

while true do
  message = server_socket.recvfrom(65536)
  puts "received: #{message.inspect}"
  parts = message[0].split(";")

  if parts[0] == "ROUND STARTING"
    client_deck = []
    server_deck = []
  end

  if parts[0] == "SET"
    if money < 50
      amount_to_set = 5
    else
      amount_to_set = 17
    end

    server_socket.send("SET;#{amount_to_set};#{name}", 0)
  end

  if parts[0] == "MONEY"
    money = parts[1].to_i
  end

  if parts[0] == "BANK"
    server_deck << parts[1].to_i
  end

  if parts[0] == "CARD"
    client_deck << parts[1].to_i
  end

  if parts[0] == "STAY_OR_CARD"
    value_client_deck = deck_value(client_deck)
    value_server_deck = server_deck.inject(0, :+)

    if client_deck.include?(11) && value_client_deck < 17
      server_socket.send("CARD;#{name}", 0)
    elsif client_deck.include?(11) && value_server_deck > 10 && value_client_deck < 19
      server_socket.send("CARD;#{name}", 0)
    elsif value_server_deck == 11 && value_client_deck < 19
      server_socket.send("CARD;#{name}", 0)
    elsif value_server_deck == 10 && value_client_deck < 17
      server_socket.send("CARD;#{name}", 0)
    elsif [7, 8, 9].include?(value_server_deck) && value_client_deck < 13
      server_socket.send("CARD;#{name}", 0)
    elsif [5, 6].include?(value_server_deck) && value_client_deck < 15
      server_socket.send("CARD;#{name}", 0)
    elsif [3, 4].include?(value_server_deck) && value_client_deck < 13
      server_socket.send("CARD;#{name}", 0)
    elsif [2].include?(value_server_deck) && value_client_deck < 13
      server_socket.send("CARD;#{name}", 0)
    elsif value_client_deck < 15
      server_socket.send("CARD;#{name}", 0)
    else
      server_socket.send("STAY;#{name}", 0)
    end
  end
end