type zonefile ui("Zone File")
{
  // Access global variables set by fastfile
  // game_name = game;     // Example: access the global 'game' variable
  // platform_id = platform; // Example: access the global 'platform' variable

  content_len = u32at(pos()) ui("Content Length"); // peek-style
  u32 content_len_raw; // actually consume it

  remaining_after_len = size() - pos();

  // If we can afford 10 dwords, assume "non-COD5 header layout"
  if (remaining_after_len >= (10 * 4)) {
    header_kind = 0 ui("Header Kind"); // 0 = non-COD5
    repeat(10) { u32 header_dw; }
    content_len_total = content_len_raw + 44 ui("Computed Total Size");
  } else {
    header_kind = 1 ui("Header Kind"); // 1 = COD5-like
    repeat(8) { u32 header_dw; }
    content_len_total = content_len_raw + 36 ui("Computed Total Size");
  }

  assetlist_obj = parse_here("assetlist");
}