/*!
    \file object_manager.h
  *  this manager will ceep track of the objects  in the world

    This is specially designed to:
    - Give an interface to the world data
    - separate the world data from the world build,update,draw process
    - recycle deleted objects: specific for Projectils since there is a lot of world entity creation/deletion (and this needs a lot of time)
    - control the garbage collector

    TO ADD SUPPORT FOR A CLASS do the following steps:
    1. include the hader file : #include "class_header.h"
    2. add the class to the type enum classID {}; in class_id.h
    3. define a function void mCache( ClassName ) in class ObjectManager

*/


#ifndef _OBJECT_MANAGER_H
#define _OBJECT_MANAGER_H

#include "base_object.h"
#include "projectile.h"
#include "list.h"

class GarbageCollector;


//! This defines the "template" macro function for cache(...)
#define mCache( Class ) \
 cache(ClassID index, int number, Class * copyObject)        \
{                                                              \
  this->managedObjectList[index] = new tList<BaseObject>(); \
  for(int i = 0; i < number; ++i)\
    {\
      this->managedObjectList[index]->add(new Class (*copyObject));\
    }\
}



//! the object manager itself
class ObjectManager : public BaseObject {

 public:
  virtual ~ObjectManager();
  /** @returns a Pointer to the only object of this Class */
  inline static ObjectManager* getInstance() { if (!singletonRef) singletonRef = new ObjectManager();  return singletonRef; };

  void registerClass(ClassID classID);

  /** a class handled by the objectManage */
  void mCache(Projectile);
  void addToDeadList(int index, BaseObject* object);
  BaseObject* getFromDeadList(int index, int number = 1);

  void debug() const;

 private:
  ObjectManager();

 private:
  static ObjectManager*      singletonRef;          //!< The singleton reference to the only reference of this class

  tList<BaseObject>**        managedObjectList;     //!< A list of managed objects (handles different types and lists of them)
};



#endif /* _OBJECT_MANAGER_H */