Class: Process::Roulette::Croupier::JoinHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/process/roulette/croupier/join_handler.rb

Overview

The JoinHandler encapsulates the “join” state of the croupier state machine. It listens for new connections, builds up the lists of players controllers, and indicates the next state (either ‘start’ or ‘finish’) based on the input from the controllers.

Instance Method Summary collapse

Constructor Details

#initialize(driver) ⇒ JoinHandler

Returns a new instance of JoinHandler.



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# File 'lib/process/roulette/croupier/join_handler.rb', line 14

def initialize(driver)
  @driver = driver
  @pending = JoinPending.new(driver)
  @next_state = nil
end

Instance Method Details

#_controller_disconnected(socket) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 107

def _controller_disconnected(socket)
  type = socket.spectator? ? 'spectator' : 'controller'
  @driver.broadcast_update("#{type} has disconnected")
  @driver.controllers.delete(socket)
end

#_controller_exit ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 118

def _controller_exit
  puts 'command given to exit'
  @next_state = FinishHandler
end

#_controller_go ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 113

def _controller_go
  puts 'command given to start'
  @next_state = StartHandler
end

#_player_disconnected(socket) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 131

def _player_disconnected(socket)
  @driver.broadcast_update "player #{socket.username} has disconnected"
  @driver.players.delete(socket)
end

#_process_controller_packet(socket, packet) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 81

def _process_controller_packet(socket, packet)
  if socket.spectator?
    _process_spectator_packet(socket, packet)
  else
    _process_real_controller_packet(socket, packet)
  end
end

#_process_current_state(listener) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 34

def _process_current_state(listener)
  until @next_state
    ready = _wait_for_connections(listener)
    _process_ready_list(ready, listener)

    @pending.reap!
    @driver.reap!
  end
end

#_process_new_connection(socket) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 62

def _process_new_connection(socket)
  puts 'new pending connection...'
  client = socket.accept
  @pending << Process::Roulette::EnhanceSocket(client)
end

#_process_participant_connection(socket) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 68

def _process_participant_connection(socket)
  packet = socket.read_packet
  socket.ping! if packet

  if @pending.include?(socket)
    @pending.process(socket, packet)
  elsif @driver.controllers.include?(socket)
    _process_controller_packet(socket, packet)
  else
    _process_player_packet(socket, packet)
  end
end

#_process_player_packet(socket, packet) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 123

def _process_player_packet(socket, packet)
  case packet
  when nil    then _player_disconnected(socket)
  when 'PING' then # do nothing
  else puts "unexpected comment from player (#{packet.inspect})"
  end
end

#_process_ready_list(list, listener) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 52

def _process_ready_list(list, listener)
  list.each do |socket|
    if socket == listener
      _process_new_connection(socket)
    else
      _process_participant_connection(socket)
    end
  end
end

#_process_real_controller_packet(socket, packet) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 89

def _process_real_controller_packet(socket, packet)
  case packet
  when nil    then _controller_disconnected(socket)
  when 'GO'   then _controller_go
  when 'EXIT' then _controller_exit
  when 'PING' then nil
  else puts "unexpected command from controller (#{packet.inspect})"
  end
end

#_process_spectator_packet(socket, packet) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 99

def _process_spectator_packet(socket, packet)
  case packet
  when nil    then _controller_disconnected(socket)
  when 'PING' then # do nothing
  else puts "unexpected comment from spectator (#{packet.inspect})"
  end
end

#_wait_for_connections(*extras) ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 44

def _wait_for_connections(*extras)
  ready, = IO.select(
    [*extras, *@pending, *@driver.sockets],
    [], [], 1)

  ready || []
end

#run ⇒ Object 



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# File 'lib/process/roulette/croupier/join_handler.rb', line 20

def run
  @driver.players.clear

  puts 'listening...'
  listener = TCPServer.new(@driver.port)

  _process_current_state(listener)
  @pending.cleanup!

  listener.close

  @next_state
end