Class: ConnectNGame::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/cli/cli.rb,
lib/cli/select_players.rb,
lib/cli/process_options.rb

Overview

The Connect N Command Line Interface class.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CLI

Set up the command line interface



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# File 'lib/cli/cli.rb', line 18

def initialize
  @players = []
  @order = 4
end

Instance Method Details

#find_player(arg) ⇒ Object

Find the selected player.



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# File 'lib/cli/select_players.rb', line 47

def find_player(arg)
  Player.players.find do |player|
    player.name.downcase == arg.downcase
  end
end

#main ⇒ Object

The starting point for an interactive, command-line-driven session of the Connect N Game!



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# File 'lib/cli/cli.rb', line 25

def main
  welcome
  process_cmd_line
  top_up_players

  play_game

rescue Interrupt
  puts
end

#pick_a_player ⇒ Object

Have the user pick a player.



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# File 'lib/cli/select_players.rb', line 20

def pick_a_player
  begin
    show_players
    print "\nEnter player #{@players.length+1} name: "
    input = gets.strip
    player = find_player(input)
    puts "invalid entry #{input.inspect}" unless player
  end until player

  @players << player
end

#play_game ⇒ Object

Play the game



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# File 'lib/cli/cli.rb', line 37

def play_game
  @game = Game.new(@players[0], @players[1], @order)
  @game.game_initialize

  begin
    current = @game.current
    puts
    result = @game.next_move
    puts "On turn ##{@game.turn}, " +
         "player #{current} " +
         "plays channel #{Utl.channel_to_name(@game.last_move)}."
    @game.rack.cli_display
  end while result == :continue

  if result == :victory
    puts "Player #{@game.current}, #{@game.current_player.name} wins!"
    puts
    puts @game.current_player.winners_comments
    puts @game.previous_player.losers_comments
  elsif result == :stalemate
    puts "No winner, it's a tie!"
  else
    puts "Result is #{result}"
  end

  puts
end

#process_cmd_line ⇒ Object

Handle any command line parameters.



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# File 'lib/cli/process_options.rb', line 11

def process_cmd_line

  opts = GetoptLong.new(
    [ "--help",   "-h", "-?", GetoptLong::NO_ARGUMENT ],
    [ "--player", "-p",       GetoptLong::REQUIRED_ARGUMENT ],
    [ "--order",  "-o",       GetoptLong::REQUIRED_ARGUMENT ],
    [ "--debug",  "-d",       GetoptLong::NO_ARGUMENT ])

  # Translate the parsed options into fOOrth.
  opts.each do |opt, arg|

    case opt
    when "--player"
      fail "Error: Too many players!" if @players.length >= 2

      puts "Player ##{@players.length + 1} is #{arg}"
      fail "Error: Unknown player: #{arg}" unless (player = find_player(arg))
      @players << player
    when "--order"
      @order = arg.to_i
      fail "Invalid order #{arg}" unless @order.between?(4,8)
    when "--debug"
      puts "Debug mode is enabled."
      $game_debug = true
    else
      fail ""
    end
  end

rescue => err
  puts err.message
  show_help
  exit
end

#select_new_players ⇒ Object

Select all new players



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# File 'lib/cli/select_players.rb', line 9

def select_new_players
  @players = []
  top_up_players
end

#show_help ⇒ Object

Display the help message.



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# File 'lib/cli/process_options.rb', line 47

def show_help
  puts
  puts "Usage info: connect_n_game <options>"
  puts
  puts "--help, -h, -?      -- Display this message and quit."
  puts "--player, -p <name> -- Select player or automaton 'name'"
  puts "                       Note: Limit of two players"
  puts "--order, -o <4..8>  -- The winning run length. Default=4"
  puts "--debug, -d         -- Display debug info."

  show_players
end

#show_players ⇒ Object

Display the available players



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# File 'lib/cli/select_players.rb', line 33

def show_players
  puts
  puts "Player Selection: "

  width = (Player.players.map do |player|
    player.name.length
  end).max

  Player.players.each do |player|
    puts "  #{player.name.ljust(width+1)}  #{player.description}"
  end
end

#top_up_players ⇒ Object

Make sure we have two players



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# File 'lib/cli/select_players.rb', line 15

def top_up_players
  pick_a_player while @players.length < 2
end

#welcome ⇒ Object

The welcome message.



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# File 'lib/cli/cli.rb', line 66

def welcome
  puts "Welcome to the Connect N Command Line Interface."
  puts "This is game version: #{VERSION}."
end