class Ai : public Persistent {
public:
  virtual void update(Actor *owner)=0;
  static Ai *create(TCODZip &zip);
protected:
  enum AiType {
    MONSTER, CONFUSED_MONSTER, PLAYER
  };
};

class PlayerAi : public Ai {
public :
  int xpLevel;
  PlayerAi();
  int getNextLevelXp();
  void update(Actor *owner);

  void load(TCODZip &zip);
  void save(TCODZip &zip);
protected :
  bool moveOrAttack(Actor *owner, int targetx, int targety);
  void handleActionKey(Actor *owner, int ascii);
  Actor *choseFromInventory(Actor *owner);
};

class MonsterAi : public Ai {
public :
  void update(Actor *owner);
  void load(TCODZip &zip);
  void save(TCODZip &zip);
protected :
  void moveOrAttack(Actor *owner, int targetx, int targety);
  int moveCount;
};

class TemporaryAi : public Ai {
public:
  TemporaryAi(int nbTurns);
  void update(Actor *owner);
  void applyTo(Actor *actor);
protected:
  int nbTurns;
  Ai *oldAi;
};

class ConfusedMonsterAi : public Ai {
public:
  ConfusedMonsterAi(int nbTurns, Ai *oldAi);
  void update(Actor *owner);
  void load(TCODZip &zip);
  void save(TCODZip &zip);
protected:
  int nbTurns;
  Ai *oldAi;
};