/*
   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 "game_menu.h"

#include "event_handler.h"

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

#include "util/loading/load_param.h"
#include "fast_factory.h"
#include "util/loading/factory.h"
#include "loading/resource_manager.h"

#include "world_entity.h"
#include "elements/image_entity.h"
#include "terrain.h"
#include "camera.h"

#include "graphics_engine.h"
#include "object_manager.h"
#include "sound_engine.h"
#include "sound_source.h"

#include "cd_engine.h"

#include "glgui.h"
#include "gui/gl/specials/glgui_notifier.h"

//! This creates a Factory to fabricate a GameMenu
CREATE_FACTORY(GameMenu, CL_GAME_MENU);



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

  this->dataTank = new GameMenuData();

  this->cameraVector = Vector(50.0, 0.0, 0.0);


  OrxGui::GLGuiHandler::getInstance()->activateCursor();
  OrxGui::GLGuiHandler::getInstance()->activate();
  OrxGui::GLGuiHandler::getInstance()->cursor()->loadTextureSequence(ResourceManager::getInstance()->getDataDir() + "/" + "maps/reap_mouse/reap_mouse_##.png", 1, 49);

  if (root != NULL)
    this->loadParams(root);

  State::setMenuID(this->getNextStoryID());
}

/// HACK only for testing.
void GameMenu::enterGui()
{
}

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

  if( this->dataTank)
    delete this->dataTank;
  delete OrxGui::GLGuiHandler::getInstance( );
}


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

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


/**
* @brief 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 GameMenu::init()
{
  /* call underlying init funciton */
  GameWorld::init();

  this->subscribeEvent(ES_MENU, SDLK_UP);
  this->subscribeEvent(ES_MENU, SDLK_DOWN);
  this->subscribeEvent(ES_MENU, SDLK_RETURN);
  this->subscribeEvent(ES_MENU, SDLK_SPACE);
  this->subscribeEvent(ES_MENU, SDLK_ESCAPE);

  this->dataTank->localCamera->setRelCoor(this->cameraVector);

  GraphicsEngine::getInstance()->displayFPS(false);

}


/**
* @brief load the data
*/
ErrorMessage GameMenu::loadData()
{
  GameWorld::loadData();
}

/**
* @brief set the Sound to play when switching menu entry.
* @param selectorSound the sound to load.
*/
void GameMenu::setSelectorSound(const std::string& selectorSound)
{
  this->selectorSource = OrxSound::SoundEngine::getInstance()->createSource(selectorSound, NULL);
}

ErrorMessage GameMenu::unloadData()
{
  this->unsubscribeEvents(ES_MENU);

  GameWorld::unloadData();
}


/**
* @brief start the menu
*/
bool GameMenu::start()
{
  EventHandler::getInstance()->pushState(ES_MENU);

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



/**
* stop the menu
*/
bool GameMenu::stop()
{
  EventHandler::getInstance()->popState();

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


/**
*  override the standard tick for more functionality
*/
void GameMenu::tick()
{
  GameWorld::tick();

  // Make the GLGui tick.
  OrxGui::GLGuiHandler::getInstance()->tick(this->dtS);

  this->animateScene(this->dtS);
}


/**
* @brief no collision detection in the menu
*/
void GameMenu::collide()
{
  //   this->dataTank->localCamera->
}


/**
* @brief animate the scene
*/
void GameMenu::animateScene(float dt)
{
  Quaternion q(/*0.00005*/ dt * .1, Vector(0.0, 1.0, 0.0));
  this->cameraVector = q.apply(this->cameraVector);
  this->dataTank->localCamera->setRelCoor(this->cameraVector);
  this->dataTank->localCamera->getTarget()->setRelCoorSoft(0,0,0);
}

void GameMenu::quitMenu()
{
  this->setNextStoryID(WORLD_ID_GAMEEND);
  this->stop();
}


/**
* @brief event dispatcher funciton
* @param event the incoming event
*/
void GameMenu::process(const Event &event)
{
}



/**********************************************************************************************
GameMenuData
**********************************************************************************************/


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

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


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


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


/**
*  unloads the GUI data
*/
ErrorMessage GameMenuData::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 GameMenuData::loadWorldEntities(const TiXmlElement* root)
{
  GameWorldData::loadWorldEntities(root);
}


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


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


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