Entry 8

LEVELnn.BIN read the way the room loader reads it

2026-10-142mformatdecomptooling

Filescrates/rugrats-data/src/level.rscrates/rugrats-re/src/main.rs

The room loader (load_rooms, 0x8002a208) walks a LEVEL file as five counted sections: 56-byte records (none in any file), 48-byte quads of four (s16 x, y, z, u16 flags) corners and 16 more bytes, 24-byte records (only LEVEL04's 63), 112-byte room records, then per room a byte list, per room a section of geometry blobs, and a final run of 12-byte records. A table at 0x800b6e98 names each database's LEVEL, COL and A.RAW files (434 + db, 466 + db, 499 + db, for all 32).

rugrats_data::level::parse follows the walk exactly and checks each room's section against the size the file gives for it; rugrats-re level FILE prints it. The first run stopped on four files: the loader moves past the byte lists with 4 - used % 4, a whole word when they end aligned, not a round-up. With that, 31 of 32 files are consumed to the last byte and every final section is 12 bytes a record. LEVEL08 is the exception: its first quad reads as 32-bit values and its third count is garbage. The format page is docs/formats/level.md.