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panda/src/chan/animBundleNode.cxx

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// Filename: animBundleNode.cxx
// Created by:  drose (06Mar02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////

#include "animBundleNode.h"
#include "datagram.h"
#include "datagramIterator.h"
#include "bamReader.h"
#include "bamWriter.h"

TypeHandle AnimBundleNode::_type_handle;


////////////////////////////////////////////////////////////////////
//     Function: AnimBundleNode::safe_to_flatten
//       Access: Public, Virtual
//  Description: Returns true if it is generally safe to flatten out
//               this particular kind of Node by duplicating
//               instances, false otherwise (for instance, a Camera
//               cannot be safely flattened, because the Camera
//               pointer itself is meaningful).
////////////////////////////////////////////////////////////////////
bool AnimBundleNode::
safe_to_flatten() const {
  return false;
}

////////////////////////////////////////////////////////////////////
//     Function: AnimBundleNode::register_with_read_factory
//       Access: Public, Static
//  Description: Tells the BamReader how to create objects of type
//               AnimBundleNode.
////////////////////////////////////////////////////////////////////
void AnimBundleNode::
register_with_read_factory() {
  BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
}

////////////////////////////////////////////////////////////////////
//     Function: AnimBundleNode::write_datagram
//       Access: Public, Virtual
//  Description: Writes the contents of this object to the datagram
//               for shipping out to a Bam file.
////////////////////////////////////////////////////////////////////
void AnimBundleNode::
write_datagram(BamWriter *manager, Datagram &dg) {
  PandaNode::write_datagram(manager, dg);
  manager->write_pointer(dg, _bundle);
}

////////////////////////////////////////////////////////////////////
//     Function: AnimBundleNode::complete_pointers
//       Access: Public, Virtual
//  Description: Receives an array of pointers, one for each time
//               manager->read_pointer() was called in fillin().
//               Returns the number of pointers processed.
////////////////////////////////////////////////////////////////////
int AnimBundleNode::
complete_pointers(TypedWritable **p_list, BamReader* manager) {
  int pi = PandaNode::complete_pointers(p_list, manager);
  _bundle = DCAST(AnimBundle, p_list[pi++]);
  return pi;
}

////////////////////////////////////////////////////////////////////
//     Function: AnimBundleNode::make_from_bam
//       Access: Protected, Static
//  Description: This function is called by the BamReader's factory
//               when a new object of this type is encountered
//               in the Bam file.  It should create the object
//               and extract its information from the file.
////////////////////////////////////////////////////////////////////
TypedWritable *AnimBundleNode::
make_from_bam(const FactoryParams &params) {
  AnimBundleNode *node = new AnimBundleNode;
  DatagramIterator scan;
  BamReader *manager;

  parse_params(params, scan, manager);
  node->fillin(scan, manager);

  return node;
}

////////////////////////////////////////////////////////////////////
//     Function: AnimBundleNode::fillin
//       Access: Protected
//  Description: This internal function is called by make_from_bam to
//               read in all of the relevant data from the BamFile for
//               the new PandaNode.
////////////////////////////////////////////////////////////////////
void AnimBundleNode::
fillin(DatagramIterator &scan, BamReader* manager) {
  PandaNode::fillin(scan, manager);
  manager->read_pointer(scan);
}

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