/*
   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 "util/loading/factory.h"
#include "util/loading/resource_manager.h"

#include "graphics_engine.h"
#include "camera.h"
#include "sound_engine.h"

#include "sound_source.h"

#include "glgui.h"
#include "menu/glgui_imagebutton.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);

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

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

/**
*  @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);

  return ErrorMessage();
}


/**
* @brief load the data
*/
ErrorMessage GameMenu::loadData()
{
  this->mainMenuBox = NULL;

  this->levelsBox = NULL;
  this->networkBox = NULL;

  this->optionsBox = NULL;
  this->generalBox = NULL;
  this->audioBox = NULL;
  this->videoBox = NULL;
  this->controlBox = NULL;
  this->levelsBox = NULL;

  this->currentlyOpened = NULL;

  return GameWorld::loadData();
}


void GameMenu::showMainMenu()
{
  if (mainMenuBox == NULL)
  {
    this->mainMenuBox = new OrxGui::GLGuiBox();
    {
      OrxGui::GLGuiButton* startButton = new OrxGui::GLGuiPushButton("Play");
      startButton->connect(SIGNAL(startButton, released), this, SLOT(GameMenu, showCampaigns));
      this->mainMenuBox->pack(startButton);

      OrxGui::GLGuiButton* networkButton = new OrxGui::GLGuiPushButton("MultiPlayer");
      networkButton->connect(SIGNAL(networkButton, released), this, SLOT(GameMenu, showMultiPlayer));
      this->mainMenuBox->pack(networkButton);

      OrxGui::GLGuiButton* optionsButton = new OrxGui::GLGuiPushButton("Options");
      optionsButton->connect(SIGNAL(optionsButton, released), this, SLOT(GameMenu, showOptionsMenu));
      this->mainMenuBox->pack(optionsButton);


      OrxGui::GLGuiButton* quitButton = new OrxGui::GLGuiPushButton("Quit");
      this->mainMenuBox->pack(quitButton);
      quitButton->connect(SIGNAL(quitButton, released), this, SLOT(GameMenu, quitMenu));
    }
  }
  this->mainMenuBox->showAll();

  this->mainMenuBox->setRelCoor2D(200, 100);
}


void GameMenu::showCampaigns()
{
  if (this->levelsBox == NULL)
  {
    this->levelsBox = new OrxGui::GLGuiBox();
    {
      const std::list<BaseObject*>* storyEntities = ClassList::getList(CL_STORY_ENTITY);
      std::list<BaseObject*>::const_iterator it;
      for( it = storyEntities->begin(); it != storyEntities->end(); it++)
      {
        StoryEntity* se = dynamic_cast<StoryEntity*>(*it);
        if( se->isContainedInMenu())
        {
          OrxGui::GLGuiImage* image = new OrxGui::GLGuiImage();
          image->show();
          image->setWidgetSize( 100, 100);

          printf("%s\n", se->getMenuScreenshoot().c_str());
          OrxGui::GLGuiImageButton* button = new OrxGui::GLGuiImageButton(se->getName(), se->getStoryID(), se->getMenuScreenshoot(), image);
          button->connect(SIGNAL(button, startLevel), this, SLOT(GameMenu, startLevel));
          levelsBox->pack(button);

          // generating screenshoot item
          /*
          ImageEntity* ie = new ImageEntity();
          ie->setVisibility(false);
          ie->setBindNode((const PNode*)NULL);
          ie->setTexture(se->getMenuScreenshoot());
          ie->setRelCoor2D(State::getResX() / 2.0f + 250.0f, State::getResY() / 2.0f);
          ie->setSize2D(140.0f, 105.0f);
          this->menuLayers[1].screenshootList.push_back(ie);
          */
        }
      }
    }
  }

  this->showSecondLevelElement(this->levelsBox);

}

void GameMenu::showMultiPlayer()
{}

void GameMenu::showOptionsMenu()
{
  if (this->optionsBox == NULL)
  {
    this->optionsBox = new OrxGui::GLGuiBox();
    {
      OrxGui::GLGuiButton* generalButton = new OrxGui::GLGuiPushButton("General");
      optionsBox->pack(generalButton);

      OrxGui::GLGuiButton* audioButton = new OrxGui::GLGuiPushButton("Audio");
      optionsBox->pack(audioButton);

      OrxGui::GLGuiButton* videoButton = new OrxGui::GLGuiPushButton("Video");
      optionsBox->pack(videoButton);

      OrxGui::GLGuiButton* controlButton = new OrxGui::GLGuiPushButton("Control");
      optionsBox->pack(controlButton);


      //      for (unsigned int i = 0; i <
      //OrxGui::GLGuiButton*

    }
  }

  this->showSecondLevelElement(this->optionsBox);
}


void GameMenu::showSecondLevelElement(OrxGui::GLGuiBox* element)
{
  if (this->currentlyOpened != NULL && this->currentlyOpened != element)
    this->currentlyOpened->hideAll();

  element->showAll();
  element->setRelCoor2D(200, 100);

  this->currentlyOpened = element;

  this->mainMenuBox->setRelCoorSoft2D(50, 100, 5);
}





void GameMenu::startLevel(int levelID)
{
  this->setNextStoryID( levelID);
  this->stop();
}

/**
* @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);

  return GameWorld::unloadData();
}


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

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

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



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

  /* now call the underlying*/
  return 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)
{
  if( event.type == SDLK_ESCAPE && event.bPressed == true)
  {
    this->setNextStoryID(WORLD_ID_GAMEEND);
    this->stop();
  }

}



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


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

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


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


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


/**
*  unloads the GUI data
*/
ErrorMessage GameMenuData::unloadGUI()
{
  /* call underlying function */
  return 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)
{
  return GameWorldData::loadWorldEntities(root);
}


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


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


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