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Modding Reference by Category

Sims 3 :DBPF | File Types | RCOL(Scene) | Catalog Resource | String Table | Key Table | TS3 Programmer's Reference 

Contents

DBPF Packages

Sims 3 stores multiple resource types in an archive format known by it's magic number of "DBPF". On disk, these archives have one of a number of extensions:

*.package General collection of resources
*.world Resources comprising a "world"
*.dbc Collection of DBPF archives in a single archive

Package Header

96 bytes: "standard" DBPF 2.0 format; DBBF not seen; DBPP is encrypted.

DWORD    magic ;; "DBPF"
DWORD    major ;; 2
DWORD    minor ;; 0
BYTE[24] unknown1
DWORD    ;; number of index entries - if zero, size and position also zero
BYTE[4]  unknown2
DWORD    ;; size of index on disk in bytes
BYTE[12] unknown3
DWORD    index_version ;; always 3
DWORD    ;; position of index (absolute)
BYTE[28] unknown4

The Index

If position is not zero, at that position:

DWORD ;; Index Type, see subsection below
<Index Header>
<Index Entry>[number of index entries]

Note: The [number of index entries] value in the Package Header excludes the Index Header.

Each Index Entry (and the Index Header) contains a variable number of DWORD fields in the following order:

Bitfield Field
0 ResourceType
1 ResourceGroup Top byte is a set of flags
2 InstanceHi
3 InstanceLo
4 Chunkoffset Absolute location in package
5 Filesize (lo 31bits), Unknown1 (hi bit) Length of data in package
6 Memsize Length of uncompressed data
7 Compressed (lo WORD), Unknown2 (hi WORD) Compressed is 0x0000 or 0xFFFF

Index Type

This is a bitfield that determines which DWORD fields exist in the Index Header and the Index Entries.


Index Header

The header provides the data that is constant to all entries, essentially a kind of compression. However not all data is valid to be included in the index header for all entries.

DWORD[(for each SET bit in Index Type)]


Index Entry

DWORD[(for each UNSET bits in Index Type)]

Note: Because of the different treatment of the bitfield, fields that exist in the Index Header will NOT exist in all Index Entries, and vice versa.

Chunk Compression

See Sims 3:DBPF/Compression.


Credits

Above documented by Peter Jones based on Spore package format


Modding Reference by Category

Sims 3 :DBPF | File Types | RCOL(Scene) | Catalog Resource | String Table | Key Table | TS3 Programmer's Reference 

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