source: orxonox.OLD/branches/network/src/util/loading/game_loader.h @ 5974

/*!
 * @file game_loader.h
 *  loads campaigns, worlds and all other story_entities
*/

#ifndef _GAME_LOADER_H
#define _GAME_LOADER_H

//#include "stdincl.h"
#include "story_def.h"
#include "comincl.h"
#include "event_listener.h"

#include "error.h"

//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
class Campaign;
class World;
class Factory;
class TiXmlElement;
class BaseObject;
class Event;
class EventHandler;

//! The GameLoader
/**
   The game loader loads all game date. this is performed in the following way:
   1. Read the structure of campaings and worlds
   2. Create the instances of the tree: here _ALL_ StoryEntities are created
      also if they are not yet used. the worlds should load their data in
      the StoryEntity::load() and StoryEntity::init() functions! NOWHERE ELSE!
      Elsewhere, all the data will be allocated at the beginning... mess...
   3. StoryEntities are load() and init() before they start
   4. once the gamloader starts the game there will be a campaing starting a
      world. this is done by callaing those StoryEntity::start()
*/
class GameLoader : public EventListener
{


 public:
  ~GameLoader ();

  /**  this class is a singleton class @returns an instance of itself  */
  static GameLoader* getInstance() { if(singletonRef == NULL) singletonRef = new GameLoader();  return singletonRef; }

  void registerFactory( Factory* factory );
  BaseObject* fabricate(const TiXmlElement* data);

  ErrorMessage init();
  ErrorMessage start();
  void stop();
  ErrorMessage pause();
  ErrorMessage resume();
  ErrorMessage destroy();

  ErrorMessage loadDebugCampaign(Uint32 campaignID);
  ErrorMessage loadCampaign(const char* name);
  ErrorMessage loadNetworkCampaign(const char* name);

  void process(const Event &event);

  void nextLevel();
  void previousLevel();


 private:
  GameLoader ();

  Campaign* fileToCampaign(const char* name);


 private:
  static GameLoader*     singletonRef;         //!< The singleton-reference to this object
  Campaign*              currentCampaign;      //!< reference to the current campaign playing

  bool                   isPaused;             //!< if the game is paused
};

#endif /* _GAME_LOADER_H */