/*! 
    \file levelfactory.h
    \brief Contains all the classes used for loading a level and its objects from a XML-file
*/

#ifndef _LEVELFACTORY_H
#define _LEVELFACTORY_H

#include "stdincl.h"
#include "xmlparser/tinyxml.h"
#include "xmlparser/tinystr.h"
#include "base_object.h"

#define FACTORY_ADD(CLASS) class CLASSFactory : public ObjectFactory { \
 public:	\
  CLASSFactory (){setNext( NULL); setClassname = "CLASS"; initialize()}; \
  ~CLASSFactory (); \
 private: \
	BaseObject* fabricateObject( void* data) { return new CLASS( data)}; \
}; \
CLASSFactory global_CLASSFactory();

//! The Objectfactory is a virtual class that can be stored by the LevelFactory
/**
	The Objectfactory is just a definition of interface to be used with the LevelFactory
*/
class ObjectFactory {

 public:
  ObjectFactory ();
  ~ObjectFactory ();

	BaseObject* load( char* name, void* data);
	void initialize();
  void registerFactory( ObjectFactory* factory);
	void setClassname(char* name) {classname = name};
	void setNext( ObjectFactory* factory);
	
 private:
	virtual BaseObject* fabricateObject( void* data);
	char* classname;
	
  ObjectFactory* next;
};

//! The Levelfactory is a simpleton class that serves as a central node for object archivation
/**
   The LevelFactory is desigend to serve as a node for the loading and stroing of objects within a level based context.
   Any class that attaches the FACTORY_ADD() macro will register itself to the Factory at the beginning of execution, 
   enabling the factory to recognize this type of class.
*/
class LevelFactory {

 public:
  LevelFactory ();
  ~LevelFactory ();
  
  static LevelFactory* getInstance();

  void registerFactory( ObjectFactory* factory);
  int loadXMLFile( char* filename);
  
 private:
 	static LevelFactory singletonRef*;
 	
  ObjectFactory* first;
  
};

#endif /* _LEVELFACTORY_H */