/* 
   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
   co-programmer: 
*/


#include "campaign.h"
#include "world.h"
#include "camera.h"
#include "story_entity.h"

using namespace std;


Campaign::Campaign () 
{
  this->entities = new List<StoryEntity>();
  this->isInit = false;
}

Campaign::~Campaign () {}


Error Campaign::init()
{
  this->isInit = true;
}

/** 
    \brief adds an game stroy entity to the campaign

    \param se: The entity
    \param storyID: The number that identifies the entity in the campaign. Each ID only used once in a Campaign

    An entity can be a world (playable), a cinematic, a shop, sounds, whatever you
    want to queue up in the campaign.
*/
void Campaign::addEntity(StoryEntity* se, Uint32 storyID)
{
  se->setStoryID(storyID);
  this->addEntity(se);
}

void Campaign::addEntity(StoryEntity* se)
{
  this->entities->add(se);
}


void Campaign::removeEntity(Uint32 storyID)
{
  this->removeEntity(this->getStoryEntity(storyID));
  
}


void Campaign::removeEntity(StoryEntity* se)
{
  this->entities->remove(se);
}


Error Campaign::start()
{
  this->start(0);
}

Error Campaign::start(Uint32 storyID = 0)
{
  printf("World::start() - starting new StoryEntity Nr:%i\n", storyID);
  Error errorCode;
  if(!this->isInit) return errorCode; 
  if(storyID == WORLD_ID_GAMEEND) return errorCode;
  this->running = true;
  StoryEntity* se = this->getStoryEntity(storyID);
  while(se != NULL && this->running)
    {
      se = this->getStoryEntity(storyID);
      this->currentEntity = se;
      
      se->displayEntityScreen();
      se->load();
      se->init();
      se->releaseEntityScreen();
      se->start();

      int nextWorldID = se->getNextStoryID();
      if(nextWorldID == WORLD_ID_GAMEEND) return errorCode;
      se = this->getStoryEntity(nextWorldID);
      if(se == NULL)
	printf("Campaign::start() - ERROR: world it not found, oh oh...");
    }
}

Error Campaign::stop()
{
  this->running = false;
  if(this->currentEntity != NULL) 
    {
      this->currentEntity->stop();
      delete this->currentEntity;
      this->currentEntity = NULL;
    }
}

Error Campaign::pause()
{
  if(this->currentEntity != NULL)
    this->isPaused = true;
}


Error Campaign::resume()
{
  if(this->currentEntity != NULL)
    this->isPaused = false;
}


void Campaign::nextLevel()
{
  printf("Campaign|nextLevel\n");
  int nextID = this->currentEntity->getNextStoryID();
  this->stop();
  this->start(nextID);
}

void Campaign::previousLevel()
{}


StoryEntity* Campaign::getStoryEntity(Uint32 storyID)
{
  List<StoryEntity>* l;
  StoryEntity* entity;
  l = this->entities->get_next();  
  while( l != NULL) 
    { 
      entity = l->get_object();
      l = l->get_next();
      if(entity->getStoryID() == storyID)
	return entity;
    }
  return NULL;
}