/*
   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_OBJECT_MANAGER

#include "object_manager.h"
#include "garbage_collector.h"
#include "list.h"


using namespace std;


/**
   \brief standard constructor
*/
ObjectManager::ObjectManager ()
{
  this->setClassID(CL_OBJECT_MANAGER, "ObjectManager");
  this->setName("ObjectManager");

  this->managedObjectList = new tList<BaseObject>*[CL_NUMBER];
  for(int i = 0; i < CL_NUMBER; ++i)
    {
      this->managedObjectList[i] = NULL;
    }

  this->garbageCollector = GarbageCollector::getInstance();
}


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

/**
   \brief standard deconstructor
*/
ObjectManager::~ObjectManager ()
{
  ObjectManager::singletonRef = NULL;
}

/**
   \brief adds an element to the list of dead objects
   \param index: The type of object to add
   \param object: pointer to the object at hand
*/
void ObjectManager::addToDeadList(int index, BaseObject* object)
{
  if( likely(this->managedObjectList[index] != NULL))
    this->managedObjectList[index]->add(object);
  else
    PRINTF(0)(" Critical: unable to add object to the list nr. %i: no list initialized - ignoring\n", index);
}

/**
   \brief resurects an object
   \param index: the type of resource to load
   \param number: how many of them

   \todo if it is unable to get an object from the deadList, it should create it
*/
BaseObject* ObjectManager::getFromDeadList(int index, int number)
{
  if( likely(this->managedObjectList[index] != NULL))
    {
      BaseObject* obj = this->managedObjectList[index]->firstElement();
      this->managedObjectList[index]->remove(obj);
      if( unlikely(obj == NULL))
        {
          PRINTF(0)("Critical: there was no object anymore in the dead list! This could result in Segfaults\n");
        }
      return obj;
    }
  else
    PRINTF(0)(" Critical: unable to get object from the list nr. %i: no elements initialized - ignoring\n", index);
  return NULL;
}

/**
   \brief outputs some simple debug information about the ObjectManage
*/
void ObjectManager::debug(void) const
{
  PRINT(0)("\n==========================| ObjectManager::debug() |===\n");
  PRINT(0)("=  Number of registerable classes: %i\n", CL_NUMBER );
  PRINT(0)("=  Currently cached objects: \n");
  for(int i = 0; i < CL_NUMBER; ++i)
    {
      if( this->managedObjectList[i] != NULL)
        PRINT(0)("=   o Class Nr. %i has cached %i object(s)\n", i, this->managedObjectList[i]->getSize());
      else
        PRINT(0)("=   o Class Nr. %i has cached 0 object(s)\n", i);
    }
  PRINT(0)("=======================================================\n");
}