/*
   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: Benjamin Grauer
   co-programmer: Patrick Boenzli
*/

#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GRAPHICS

#include "emitter_node.h"

#include "particle_system.h"

#include "util/loading/load_param.h"
#include "debug.h"

ObjectListDefinition(EmitterNode);

/**
 *  standard constructor
*/
EmitterNode::EmitterNode( float lifetime)
{
  this->registerObject(this, EmitterNode::_objectList);

  this->system = NULL;
  this->emitter = NULL;
  this->lifeCycle = 0.0;
  this->lifeSpan = lifetime;
}

/**
 *  standard destructor

   removes the EmitterSystem from the ParticleEngine
*/
EmitterNode::~EmitterNode ()
{
  this->emitter->setSystem(NULL);
  delete this->emitter;
}

/**
 *  loads a EmitterNode from a XML-element
 * @param root the XML-element to load from
*/
void EmitterNode::loadParams(const TiXmlElement* root)
{
  PNode::loadParams(root);

  LoadParam(root, "life-time", this, EmitterNode, setLifetime)
    .describe("Amount of time this emitter node shall remain");
}

void EmitterNode::start()
{
   this->started  = true;
}

void EmitterNode::tick(float dt)
{
  if( !this->started)
    return;

  this->lifeCycle += dt/this->lifeSpan;
  if  (unlikely(this->lifeCycle >= 1))
  {
    this->removeNode();
  }
  this->setAbsCoor(this->getAbsCoor() + (this->velocity * dt));
}