/*
 *  Copyright (C) 2001  The Exult Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef _CONVERSATION_H
#define _CONVERSATION_H

#include "rect.h"
#include "singles.h"
#include "shapeid.h"
#include <deque>
#include <vector>
#include <string>

class Npc_face_info;
class Usecode_value;
class Game_window;

class Conversation : public Game_singletons, public Paintable{
 public:
  Conversation();
  ~Conversation();

 private:

  Npc_face_info *face_info[2];	// NPC's on-screen faces in convers.
  int num_faces;
  int last_face_shown;		// Index of last npc face shown.
  Rectangle avatar_face;		// Area take by Avatar in conversation.
  Rectangle *conv_choices;	// Choices during a conversation.

  std::vector<std::string> answers;
  std::deque< std::vector<std::string> > answer_stack;

 public:
  inline int get_num_answers() const { return answers.size(); }
  inline int get_num_faces_on_screen() const { return num_faces; }
  void init_faces();
  void show_face(int shape, int frame, int slot = -1);
  void remove_face(int shape);
  void remove_slot_face(int slot); // SI.
  void remove_last_face();	// SI.
  void show_npc_message(const char *msg);
  bool is_npc_text_pending();
  void clear_text_pending();
  void show_avatar_choices();
  void clear_avatar_choices();
  int conversation_choice(int x, int y);
  void set_slot(int i) { last_face_shown = i; }	// SI.
  virtual void paint();			// Paint entire conversation.
  void paint_faces(bool text = false);

  void add_answer(Usecode_value& val);
  void remove_answer(Usecode_value& val);
  void clear_answers(void);
  int locate_answer(const char* str);
  const char* get_answer(int num) { return answers[num].c_str(); }

  void push_answers();
  void pop_answers();
  bool stack_empty() const { return !answer_stack.size(); }

 private:
  void show_avatar_choices(int num_choices, char **choices);
  void add_answer(const char *str);
  void remove_answer(const char *str);
};

#endif