109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
// Filename: fltInstanceRef.cxx
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// Created by: drose (30Aug00)
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//
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////////////////////////////////////////////////////////////////////
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#include "fltInstanceRef.h"
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#include "fltRecordReader.h"
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#include "fltRecordWriter.h"
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#include "fltInstanceDefinition.h"
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#include "fltHeader.h"
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TypeHandle FltInstanceRef::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: FltInstanceRef::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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FltInstanceRef::
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FltInstanceRef(FltHeader *header) : FltBead(header) {
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_instance_index = 0;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltInstanceRef::write
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// Access: Public
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// Description: Writes a multiple-line description of the record and
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// all of its children. This is a human-readable
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// description, primarily for debugging; to write a flt
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// file, use FltHeader::write_flt().
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////////////////////////////////////////////////////////////////////
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void FltInstanceRef::
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write(ostream &out, int indent_level) const {
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indent(out, indent_level) << "instance";
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FltInstanceDefinition *def = _header->get_instance(_instance_index);
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if (def != (FltInstanceDefinition *)NULL) {
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def->write_children(out, indent_level + 2);
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indent(out, indent_level) << "}\n";
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} else {
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out << "\n";
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltInstanceRef::extract_record
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// Access: Protected, Virtual
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// Description: Fills in the information in this bead based on the
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// information given in the indicated datagram, whose
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// opcode has already been read. Returns true on
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// success, false if the datagram is invalid.
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////////////////////////////////////////////////////////////////////
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bool FltInstanceRef::
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extract_record(FltRecordReader &reader) {
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if (!FltBead::extract_record(reader)) {
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return false;
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}
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nassertr(reader.get_opcode() == FO_instance_ref, false);
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DatagramIterator &iterator = reader.get_iterator();
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iterator.skip_bytes(2);
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_instance_index = iterator.get_be_int16();
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nassertr(iterator.get_remaining_size() == 0, true);
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return true;
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltInstanceRef::write_record_and_children
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// Access: Protected, Virtual
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// Description: Writes this record out to the flt file, along with all
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// of its ancillary records and children records. Returns
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// FE_ok on success, or something else on error.
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////////////////////////////////////////////////////////////////////
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FltError FltInstanceRef::
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write_record_and_children(FltRecordWriter &writer) const {
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// First, make sure our instance definition has already been written.
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FltError result = writer.write_instance_def(_header, _instance_index);
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if (result != FE_ok) {
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return result;
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}
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// Then write out our own record.
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return FltBead::write_record_and_children(writer);
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}
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////////////////////////////////////////////////////////////////////
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// Function: FltInstanceRef::build_record
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// Access: Protected, Virtual
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// Description: Fills up the current record on the FltRecordWriter with
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// data for this record, but does not advance the
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// writer. Returns true on success, false if there is
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// some error.
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////////////////////////////////////////////////////////////////////
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bool FltInstanceRef::
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build_record(FltRecordWriter &writer) const {
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if (!FltBead::build_record(writer)) {
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return false;
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}
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writer.set_opcode(FO_instance_ref);
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Datagram &datagram = writer.update_datagram();
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datagram.pad_bytes(2);
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datagram.add_be_int16(_instance_index);
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return true;
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}
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