item.hh

説明を見る。

#ifndef ITEM_HH_
# define ITEM_HH_

# include <string>
# include <map>
# include <iostream>

# include "objects_fwd.hh"

# define UNKNOWN_ITEM (-1)

namespace objects
{
  class ItemFactory
  {
  public:
    ItemFactory();
    ~ItemFactory();

    static ItemFactory &get_instance();
    const Item &get(int id);

  protected:
    std::map<int, Item *> _item_map;

    void register_item(Item &i);
  };
  
  class Item
  {
  public:
    Item();

    static const Item &get(int id);
    virtual void accept(ItemVisitor &iv) = 0;
    virtual void print(std::ostream &os) = 0;

    virtual int get_id() const = 0;
    virtual const std::string &get_name() = 0;

    virtual bool heals_hp() const;
    virtual bool heals_mp() const;

    bool operator ==(const Item &i) const;
  };

  template<int ITEM_ID>
  class ItemID : public Item
  {
  public:
    ItemID();

    static const int id = ITEM_ID;
    void accept(ItemVisitor &iv);
    void print(std::ostream &os);
    static const ItemID<ITEM_ID> &get_instance();

    int get_id() const;
    const std::string &get_name();
  };
  
  class HealingItem : public Item
  {
  protected:
    HealingItem();

  public:
    virtual bool heals_hp() const;
    virtual bool heals_mp() const;
    virtual int get_hp_healing() const;
    virtual int get_mp_healing() const;

    virtual int get_price() const;

    double get_hp_healing_cost() const;
    double get_mp_healing_cost() const;
  };

  template<int ITEM_ID, int HP_HEALING, int MP_HEALING, int PRICE>
  class HealingItemID : public HealingItem
  {
  public:
    HealingItemID();

    static const int id = ITEM_ID;
    void accept(ItemVisitor &iv);
    void print(std::ostream &os);

    int get_id() const;
    const std::string &get_name();
    static const HealingItemID<ITEM_ID, HP_HEALING, 
      MP_HEALING, PRICE> &get_instance();

    int get_hp_healing() const;
    int get_mp_healing() const;
    int get_price() const;
  };

  template<int ITEM_ID, int HP_PERCENTAGE_HEALING, int MP_PERCENTAGE_HEALING, int PRICE>
  class PercentageHealingItemID : public HealingItem
  {
  public:
    PercentageHealingItemID();

    static const int id = ITEM_ID;
    void accept(ItemVisitor &iv);
    void print(std::ostream &os);
    static const PercentageHealingItemID<ITEM_ID, HP_PERCENTAGE_HEALING, 
      MP_PERCENTAGE_HEALING, PRICE> &get_instance();

    int get_id() const;
    const std::string &get_name();

    int get_hp_healing() const;
    int get_mp_healing() const;
    int get_price() const;
  };

  std::ostream &operator <<(std::ostream &os, const Item &i);
}

# include "item.hxx"

#endif

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