type zonefile [display="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, readonly, display="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, readonly, display="Header Kind"]; // 0 = non-COD5
    repeat(10) { u32 header_dw; }
    content_len_total = content_len_raw + 44 [ui, readonly, display="Computed Total Size"];
  } else {
    header_kind = 1 [ui, readonly, display="Header Kind"]; // 1 = COD5-like
    repeat(8) { u32 header_dw; }
    content_len_total = content_len_raw + 36 [ui, readonly, display="Computed Total Size"];
  }
  
  assetlist_obj = parse_here("assetlist");
}