I don't get it at all. Here is the whole thing in straightforward 80's OOP:
post '/join/?' do
game_server = GameServer.instance
if game_server.join(params[:name], @account.id)
flash[:notice] = "You have joined the game."
redirect_to '/game'
else
flash[:error] = "There was an error when joining: #{change.message}"
haml :join
end
end
class GameServer
include Singleton
def initialize
@games = [Game.new]
end
def join(name, account_id)
player = Player.new(name, account_id)
return @games.last.joined_by(player)
end
end
class Player < Struct.new(:name, :account_id)
end
class Game
def initialize
@players = []
@events = []
end
def joined_by(player)
if @players.none? { |player| player.name == player.name }
@players << player
@events << PlayerJoined.new
return true
else
@events << JoiningError.new
return false
end
end
end
class Event
end
class PlayerJoined < Event
end
class JoiningError < Event
end
Could you explain to me how is the version presented an improvement over such a straightforward one?
