Class: BTetrisKp::NetSetupState

Inherits:
Object
  • Object
show all
Defined in:
lib/btetris_kp/netsetup.rb

Overview

class representing a window for creating a game over network (SERVER SIDE)

Instance Method Summary collapse

Constructor Details

#initialize(window) ⇒ NetSetupState

Returns a new instance of NetSetupState.



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# File 'lib/btetris_kp/netsetup.rb', line 9

def initialize(window)
  @window = window
  @font = Gosu::Font.new(@window, Gosu.default_font_name, Const::FONT_MED_SIZE)
  initialize_title_image
  setup_server
  @connected = false
end

Instance Method Details

#button_down(id) ⇒ Object

button handler



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# File 'lib/btetris_kp/netsetup.rb', line 70

def button_down(id)
  @window.state = MenuState.new(@window) if id == Gosu::KbEscape
end

#draw ⇒ Object

draws net setup window



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# File 'lib/btetris_kp/netsetup.rb', line 61

def draw
  @font.draw(Const::SERVER_WAIT, @window.width / 5,
             @window.height / 2 - Const::GAME_WIN_GAP, 0)
  @font.draw("#{Const::SERVER_PORT}#{@port}", @window.width / 3.5,
             @window.height / 2, 0)
  @title_image.draw(@img_x, @img_y, 1, @img_size_factor, @img_size_factor)
end

#initialize_title_image ⇒ Object

loads title image and calculates position, size variables



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# File 'lib/btetris_kp/netsetup.rb', line 29

def initialize_title_image
  @title_image = Gosu::Image.new(@window, Const::PATH_IMAGE_TITLE, false)
  @img_size_factor = (@window.width - Const::GAME_WIN_GAP).to_f / @title_image.width
  @img_x = (@window.width - @title_image.width * @img_size_factor) / 2
  @img_y = 20
end

#needs_cursor? ⇒ Boolean

shows default system cursor

Returns:

  • (Boolean) 


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# File 'lib/btetris_kp/netsetup.rb', line 75

def needs_cursor?
  true
end

#setup_server ⇒ Object

setups a server with random port



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# File 'lib/btetris_kp/netsetup.rb', line 18

def setup_server
  @port = 0
  begin
    @port = rand(40_000)
    @server = TCPServer.new(@port)
  rescue
    retry
  end
end

#try_accept ⇒ Object

tries to accept client connection, sets @connected true when accepted



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# File 'lib/btetris_kp/netsetup.rb', line 37

def try_accept
  begin
    # tries to accept client connection
    @socket = @server.accept_nonblock
    @socket.sendmsg_nonblock(Const::MSG_WELCOME)
    # if welcome msg is recvd, start game, else close socket
    msg = @socket.recv(1)
    msg == Const::MSG_WELCOME ? @connected = true : @socket.close
  rescue
    # no one connected, try again next time
  end
end

#update ⇒ Object

updates window state, checks for incomming connections starts game when ready



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# File 'lib/btetris_kp/netsetup.rb', line 52

def update
  if @connected
    @window.state = NetGameState.new(@window, @socket)
  else
    try_accept
  end
end