Class: BTetrisKp::NetJoinState

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

Overview

class representing a window for joining a game over network (CLIENT SIDE)

Instance Method Summary collapse

Constructor Details

#initialize(window) ⇒ NetJoinState

Returns a new instance of NetJoinState.



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

def initialize(window)
  @window = window
  @font = Gosu::Font.new(@window, Gosu.default_font_name, Const::FONT_MED_SIZE)
  @connecting = false
  initialize_title_image
  initialize_textfields
  @socket = nil
end

Instance Method Details

#button_down(id) ⇒ Object

button handler



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# File 'lib/btetris_kp/netjoin.rb', line 87

def button_down(id)
  case id
  when Gosu::KbEscape
    if @connecting
      @connecting = false
    else
      # windows text_input needs to be set on nil
      # otherwise gosu wont register some keys
      @window.text_input = nil
      @window.state = MenuState.new(@window)
    end
  when Gosu::KbReturn
    @connecting = true
  when Gosu::MsLeft
    @window.text_input = @text_fields.find do |tf|
      tf.mouse_over?(@window.mouse_x, @window.mouse_y)
    end
    unless @window.text_input.nil?
      @window.text_input.move_caret(@window.mouse_x)
    end
  end
end

#draw ⇒ Object

draws net join window



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

def draw
  @text_fields.each { |t| t.draw }
  @font.draw(Const::IP_CAPTION, @ip_x,
             @text_y, 0)
  @font.draw(Const::PORT_CAPTION, @port_x,
             @text_y + @font.height + 2 * Const::FONT_GAP, 0)
  @font.draw(Const::CONNECTING, @text_x,
             @text_y + 3 * (@font.height + 2 * Const::FONT_GAP), 0) if @connecting
  @title_image.draw(@img_x, @img_y, 1, @img_size_factor, @img_size_factor)
end

#initialize_textfields ⇒ Object

initializes text fields for reading ip and port initializes positions for texts and textfields



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# File 'lib/btetris_kp/netjoin.rb', line 28

def initialize_textfields
  @text_x = @window.width / 3 + 2 * Const::FONT_GAP
  @text_y = @window.height / 3
  @ip_x = @text_x - @font.text_width(Const::IP_CAPTION) - 3 * Const::FONT_GAP
  @port_x = @text_x - @font.text_width(Const::PORT_CAPTION) - 3 * Const::FONT_GAP
  @text_fields = []
  @text_fields << TextField.new(@window, @font, @text_x,
                                @text_y, Const::DEF_IP, /[^0-9.]/,
                                @font.text_width('000.000.000.000'), 15)
  @text_fields << TextField.new(@window, @font, @text_x,
                                @text_y + @font.height + 2 * Const::FONT_GAP,
                                Const::DEF_PORT, /[^0-9]/,
                                @font.text_width('00000'), 5)
end

#initialize_title_image ⇒ Object

loads title image and calculates position, size variables



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# File 'lib/btetris_kp/netjoin.rb', line 19

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/netjoin.rb', line 111

def needs_cursor?
  true
end

#try_connect ⇒ Object

tries to connect to server



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# File 'lib/btetris_kp/netjoin.rb', line 44

def try_connect
  begin
    @socket = TCPSocket.new(@text_fields[0].text, @text_fields[1].text)
    @socket.sendmsg_nonblock(Const::MSG_WELCOME)
    msg = @socket.recv(1)
    unless msg == Const::MSG_WELCOME
      @socket.close
      @socket = nil
    end
  rescue
    # error while connecting
  end
end

#update ⇒ Object

updates window state, tries to connect to server, starts game when ready



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# File 'lib/btetris_kp/netjoin.rb', line 59

def update
  @text_fields.each { |t| t.update }
  if @connecting
    if @socket.nil?
      try_connect
    else
      # socket created and connected, start net game
      # windows text_input needs to be set on nil
      # otherwise gosu wont register some keys
      @window.text_input = nil
      @window.state = NetGameState.new(@window, @socket)
    end
  end
end