/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

### File Specific:
   main-programmer: Patrick Boenzli

*/

#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_WORLD


#include "simple_game_menu.h"

#include "state.h"
#include "class_list.h"

#include "load_param.h"
#include "fast_factory.h"
#include "factory.h"

#include "world_entity.h"
#include "terrain.h"

#include "event_handler.h"

#include "cd_engine.h"


using namespace std;


//! This creates a Factory to fabricate a SimpleGameMenu
CREATE_FACTORY(SimpleGameMenu, CL_SIMPLE_GAME_MENU);



SimpleGameMenu::SimpleGameMenu(const TiXmlElement* root)
  : GameWorld(root)
{
  this->setClassID(CL_SIMPLE_GAME_MENU, "SimpleGameMenu");
  this->setName("SimpleGameMenu uninitialized");

  this->dataTank = new SimpleGameMenuData();

  this->loadParams(root);
}


/**
 *  remove the SimpleGameMenu from memory
 *
 *  delete everything explicitly, that isn't contained in the parenting tree!
 *  things contained in the tree are deleted automaticaly
 */
SimpleGameMenu::~SimpleGameMenu ()
{
  PRINTF(3)("SimpleGameMenu::~SimpleGameMenu() - deleting current world\n");

  if( this->dataTank)
    delete this->dataTank;
}


/**
 * loads the parameters of a SimpleGameMenu from an XML-element
 * @param root the XML-element to load from
 */
void SimpleGameMenu::loadParams(const TiXmlElement* root)
{
  /* skip the GameWorld, since it does not define any useful loadParams for this class */
  static_cast<GameWorld*>(this)->loadParams(root);

  PRINTF(4)("Loaded SimpleGameMenu specific stuff\n");
}


/**
 * this is executed just before load
 *
 * since the load function sometimes needs data, that has been initialized
 * before the load and after the proceeding storyentity has finished
 */
ErrorMessage SimpleGameMenu::init()
{
  /* call underlying init funciton */
  GameWorld::init();

  EventHandler::getInstance()->subscribe(this, ES_MENU, SDLK_UP);
  EventHandler::getInstance()->subscribe(this, ES_MENU, SDLK_DOWN);
  EventHandler::getInstance()->subscribe(this, ES_MENU, SDLK_RETURN);
  EventHandler::getInstance()->subscribe(this, ES_MENU, SDLK_SPACE);
}



bool SimpleGameMenu::start()
{
  EventHandler::getInstance()->pushState(ES_MENU);

  /* now call the underlying*/
  GameWorld::start();
}



bool SimpleGameMenu::stop()
{
  EventHandler::getInstance()->popState();

  /* now call the underlying*/
  GameWorld::stop();
}



/**
 * no collision detection in the menu
 */
void SimpleGameMenu::collide()
{}


/**
 * event dispatcher funciton
 * @param event the incoming event
 */
void SimpleGameMenu::process(const Event &event)
{
  PRINTF(0)("Got Event: %i\n", event.type);

  if( event.type == SDLK_RETURN)
  {
    this->stop();
  }
}






/**********************************************************************************************
    SimpleGameMenuData
 **********************************************************************************************/


/**
 * SimpleGameMenuData constructor
 */
SimpleGameMenuData::SimpleGameMenuData()
{}

/**
 * SimpleGameMenuData decontructor
 */
SimpleGameMenuData::~SimpleGameMenuData()
{}


/**
 *  initialize the GameWorldDataData
 */
ErrorMessage SimpleGameMenuData::init()
{
  /* call underlying function */
  GameWorldData::init();
}


/**
 *  loads the GUI data
 * @param root reference to the xml root element
 */
ErrorMessage SimpleGameMenuData::loadGUI(TiXmlElement* root)
{
  /* call underlying function */
  GameWorldData::loadGUI(root);
}


/**
 *  unloads the GUI data
 */
ErrorMessage SimpleGameMenuData::unloadGUI()
{
  /* call underlying function */
  GameWorldData::unloadGUI();
}


/**
 *  overloads the GameWorld::loadWorldEntities(...) class since the menu WorldEntity loading is different (less loading stuff)
 * @param root reference to the xml root parameter
 */
ErrorMessage SimpleGameMenuData::loadWorldEntities(TiXmlElement* root)
{
  TiXmlElement* element = root->FirstChildElement("WorldEntities");

  if( element != NULL)
  {
    element = element->FirstChildElement();
    PRINTF(4)("Loading WorldEntities\n");
    while( element != NULL)
    {
      BaseObject* created = Factory::fabricate(element);
      if( created != NULL )
        printf("Created a %s: %s\n", created->getClassName(), created->getName());

      if( element->Value() != NULL && !strcmp( element->Value(), "SkyBox"))
        this->sky = dynamic_cast<WorldEntity*>(created);
      if( element->Value() != NULL && !strcmp( element->Value(), "Terrain"))
        this->terrain = dynamic_cast<Terrain*>(created);
      element = element->NextSiblingElement();
    }
    PRINTF(4)("Done loading WorldEntities\n");
  }

  /* init the pnode tree */
  PNode::getNullParent()->init();
}


/**
 *  unloads the world entities from the xml file
 */
ErrorMessage SimpleGameMenuData::unloadWorldEntities()
{
  /* call underlying function */
  GameWorldData::unloadWorldEntities();
}


/**
 *  loads the scene data
 * @param root reference to the xml root element
 */
ErrorMessage SimpleGameMenuData::loadScene(TiXmlElement* root)
{
  /* call underlying function */
  GameWorldData::loadScene(root);
}


/**
 *  unloads the scene data
 */
ErrorMessage SimpleGameMenuData::unloadScene()
{
  /* call underlying function */
  GameWorldData::unloadScene();
}