/* 
   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: ...
   co-programmer: ...
*/

//#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_WORLD_ENTITY

#include "particle_engine.h"

#include "particle_system.h"
#include "particle_emitter.h"

#include "list.h"

using namespace std;

/**
   \brief standard constructor
*/
ParticleEngine::ParticleEngine () 
{
   this->setClassName ("ParticleEngine");

   this->systemList = new tList<ParticleSystem>;
}

/**
   \brief the singleton reference to this class
*/
ParticleEngine* ParticleEngine::singletonRef = NULL;

/**
   \returns a Pointer to this Class
*/
ParticleEngine* ParticleEngine::getInstance(void)
{
  if (!ParticleEngine::singletonRef)
    ParticleEngine::singletonRef = new ParticleEngine();
  return ParticleEngine::singletonRef;
}

/**
   \brief standard destructor

*/
ParticleEngine::~ParticleEngine () 
{
  delete this->systemList;


  ParticleEngine::singletonRef = NULL;
}

/**
   \brief this function ticks all the ParticleSystems, so an animation will flow
   \param dt passed since last tick
*/
void ParticleEngine::tick(float dt)
{
  tIterator<ParticleSystem>* tmpIt = systemList->getIterator();
  ParticleSystem* tmpSys = tmpIt->nextElement();
  while(tmpSys)
    {
      tmpSys->tick(dt);
      tmpSys = tmpIt->nextElement();
    }
  delete tmpIt;

}