/*
   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: Silvan Nellen
   co-programmer: ...
*/

//#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_

#include "heat_haze_manager.h"
#include "resource_shader.h"

ObjectListDefinition(HeatHazeManager);


/**
 * the constructor
 *
*/
HeatHazeManager::HeatHazeManager ()
{
  this->registerObject(this, HeatHazeManager::_objectList);
  this->init();
}


/**
 * standard deconstructor
*/
HeatHazeManager::~HeatHazeManager ()
{

}


/**
 * initialise the heathaze manager
*/
void HeatHazeManager::init ()
{
  this->heatShader = ResourceShader( "shaders/heat_haze.vert", "shaders/heat_haze.frag");

  this->heatShader.activateShader();
  Shader::Uniform(heatShader, "ParticlesShot").set(0);
  Shader::Uniform(heatShader, "FinalRender").set(1);
  parameters = new Shader::Uniform(heatShader, "parameters");
  //parameters->set(1.0f/offScreenWidth, 1.0f/offScreenHeight, scale, scale);
  this->heatShader.deactivateShader();

}


/**
 * Get the mask of all heat particles
*/
void HeatHazeManager::acquireMask()
{
 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

 for (ObjectList<HeatParticles>::const_iterator it = HeatParticles::objectList().begin();
       it != HeatParticles::objectList().end();
       ++it)
     {
     //TODO: Let all the HeatParticles draw the particles in a temporary buffer (texture unit 1)
     }

 // TODO: Copy the current framebuffer into a texture (particleMask)
 //particleMask.
}

/**
 * Apply the disortion effect to the frame
*/
void HeatHazeManager::apply()
{
  
}