Dialog engine ( code part )

Hi,
I paste here the code for a dialog like the previous diagram
( not exactly 
the same ).

The add method is a typical FSM.
actual_state, trigger, condition ---> next_state, reply,
action

Regards,
Miguel

--

        Behaviours.addGreeting(this);
        Behaviours.addJob(this,"I am the
librarian.");
        Behaviours.addHelp(this,"Read!.");

        add(1,"book",new ChatCondition()
          {
          public boolean fire(Player player, SpeakerNPC npc)
            {
            return
player.isQuestCompleted("ceryl_book");
            }
          },
            1,"I already got the book. Thank
you!",null);

        add(1,"book",new ChatCondition()
          {
          public boolean fire(Player player, SpeakerNPC npc)
            {
            return player.hasQuest("ceryl_book")
&& 
player.getQuest("ceryl_book").equals("jyan
ath");
            }
          },
            1,null,new ChatAction()
          {
          public void fire(Player player, String text,
SpeakerNPC engine)
            {
            say("Thanks!");
            player.addXP(100);
           
player.setQuest("ceryl_book","done")
;
            player.removeQuest("ceryl_book");
            }
          });

        add(1,"book",new ChatCondition()
          {
          public boolean fire(Player player, SpeakerNPC npc)
            {
            return player.hasQuest("ceryl_book")
&& 
player.getQuest("ceryl_book").equals("star
t");
            }
          },
            1,"I really need that book now!. Go to
talk with 
Jyanath.",null);

        add(1,"book",new ChatCondition()
          {
          public boolean fire(Player player, SpeakerNPC npc)
            {
            return
!player.hasQuest("ceryl_book");
            }
          },
            60,"Could you ask Jyanath for a #book that
I am looking?",null);

        add(60,"yes",null,
            1,null,new ChatAction()
          {
          public void fire(Player player, String text,
SpeakerNPC engine)
            {
            say("Great!. Start the quest now!");
           
player.setQuest("ceryl_book","start"
);
            }
          });

        add(60,"no",null,1,"Oh! Ok
:(",null);

        Behaviours.addGoodbye(this);




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