Function ReadRoom

Descent3/LoadLevel.cpp:2437–2631

Reads a room from a disk file Parameters: ifile - file to read from rp - room to read version - version number of file Returns: 1 if read ok, else 0

//					version - version number of file
// Returns:		1 if read ok, else 0
int ReadRoom(CFILE *ifile, room *rp, int version) {
  int i, nverts, nfaces, nportals;

  ASSERT(rp->used == 0); // should be free

  // Get counts for room elements
  nverts = cf_ReadInt(ifile);
  nfaces = cf_ReadInt(ifile);
  nportals = cf_ReadInt(ifile);

  // Initialize the room
  InitRoom(rp, nverts, nfaces, nportals);

  // Get room name
  rp->name = NULL;
  if (version >= 96) {
    char tempname[ROOM_NAME_LEN + 1];
    cf_ReadString(tempname, sizeof(tempname), ifile);
    if (strlen(tempname)) {
      rp->name = (char *)mem_malloc(strlen(tempname) + 1);
      strcpy(rp->name, tempname);
    }
  }

  // Read path point
  if (version >= 63) {
    cf_ReadVector(ifile, &rp->path_pnt);
  }

  // Read in verts
  for (i = 0; i < rp->num_verts; i++) {
    cf_ReadVector(ifile, &rp->verts[i]);
    if (version >= 52 && version <= 67) {
      cf_ReadByte(ifile);
      cf_ReadByte(ifile);
    } else if (version >= 68 && version < 71) {
      vector tempv;
      cf_ReadVector(ifile, &tempv);
      cf_ReadShort(ifile);
    }

    // Update checksum
    AppendToLevelChecksum(rp->verts[i]);
  }

  // Read in faces
  for (i = 0; i < rp->num_faces; i++) {
    bool t;

    // Load the face
    ReadFace(ifile, &rp->faces[i], version);

    for (int k = 0; k < rp->faces[i].num_verts; k++) {
      AppendToLevelChecksum(rp->faces[i].face_verts[k]);
    }
    AppendToLevelChecksum(rp->faces[i].tmap);

    // Get the surface normal for this face