Panda3D

fltInstanceDefinition.h

00001 // Filename: fltInstanceDefinition.h
00002 // Created by:  drose (30Aug00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef FLTINSTANCEDEFINITION_H
00016 #define FLTINSTANCEDEFINITION_H
00017 
00018 #include "pandatoolbase.h"
00019 
00020 #include "fltBead.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : FltInstanceDefinition
00024 // Description : This special kind of record marks the top node of an
00025 //               instance subtree.  This subtree lives outside of the
00026 //               normal hierarchy, and is MultiGen's way of supporting
00027 //               instancing--each instance subtree has a unique index,
00028 //               which may be referenced in a FltInstanceRef object to
00029 //               make the instance appear in various places in the
00030 //               hierarchy.
00031 ////////////////////////////////////////////////////////////////////
00032 class FltInstanceDefinition : public FltBead {
00033 public:
00034   FltInstanceDefinition(FltHeader *header);
00035 
00036   int _instance_index;
00037 
00038 protected:
00039   virtual bool extract_record(FltRecordReader &reader);
00040   virtual bool build_record(FltRecordWriter &writer) const;
00041 
00042 public:
00043   virtual TypeHandle get_type() const {
00044     return get_class_type();
00045   }
00046   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00047   static TypeHandle get_class_type() {
00048     return _type_handle;
00049   }
00050   static void init_type() {
00051     FltBead::init_type();
00052     register_type(_type_handle, "FltInstanceDefinition",
00053                   FltBead::get_class_type());
00054   }
00055 
00056 private:
00057   static TypeHandle _type_handle;
00058 
00059   friend class FltInstanceRef;
00060   friend class FltRecordWriter;
00061 };
00062 
00063 #endif
00064 
00065 
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