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=========================================
Minetest World Format
=========================================
Format used as of 0.4.dev-120322
==================================
This applies to a world format carrying the serialization version 22 which
is used at least in version 0.4.dev-120322.
The serialization version used is 22. It does not fully specify every aspect
of this format; if compliance with this format is to be checked, it needs to
be done by detecting if the files and data indeed follows it.
Legacy stuff:
-------------
Data can, in theory, be contained in the flat file directory structure
described below in Version 17, but it is not officially supported.
Files:
------
Everything is contained in a directory, the name of which is freeform, but
often serves as the name of the world.
Currently the authentication and ban data is stored on a per-world basis. It
can be copied over from an old world to a newly created world.
World
|-- auth.txt ----- Authentication data
|-- env_meta.txt - Environment metadata
|-- ipban.txt ---- Banned ips/users
|-- map_meta.txt - Map metadata
|-- map.sqlite --- Map data
|-- players ------ Player directory
| |-- player1 -- Player file
| '-- player2 -- Player file
`-- world.mt ----- World metadata
auth.txt
---------
Contains authentication data, player per line.
<name>:<password hash as <name><password> SHA1 base64>:<privilege1,...>
Example lines:
Player "celeron55", no password, privileges "interact" and "shout":
celeron55::interact,shout
Player "Foo", password "bar", privileges "interact" and "shout":
foo:iEPX+SQWIR3p67lj/0zigSWTKHg:interact,shout
env_meta.txt
-------------
--- Example content ---
game_time = 73471
time_of_day = 19118
EnvArgsEnd
-----------------------
ipban.txt
----------
Format used as of 2011-05 or so
================================
Map data serialization format version 17.
Directory structure:
sectors/XXXXZZZZ or sectors2/XXX/ZZZ
XXXX, ZZZZ, XXX and ZZZ being the hexadecimal X and Z coordinates.
Under these, the block files are stored, called YYYY.
There also exists files map_meta.txt and chunk_meta, that are used by the
generator. If they are not found or invalid, the generator will currently
behave quite strangely.
The MapBlock file format (sectors2/XXX/ZZZ/YYYY):
-------------------------------------------------
NOTE: Byte order is MSB first.
u8 version
- map format version number, this one is version 17
u8 flags
- Flag bitmasks:
- 0x01: is_underground: Should be set to 0 if there will be no light
obstructions above the block. If/when sunlight of a block is updated and
there is no block above it, this value is checked for determining whether
sunlight comes from the top.
- 0x02: day_night_differs: Whether the lighting of the block is different on
day and night. Only blocks that have this bit set are updated when day
transforms to night.
- 0x04: lighting_expired: If true, lighting is invalid and should be updated.
If you can't calculate lighting in your generator properly, you could try
setting this 1 to everything and setting the uppermost block in every
sector as is_underground=0. I am quite sure it doesn't work properly,
though.
zlib-compressed map data:
- content:
u8[4096]: content types
u8[4096]: param1 values
u8[4096]: param2 values
zlib-compressed node metadata
- content:
u16 version (=1)
u16 count of metadata
foreach count:
u16 position (= p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X)
u16 type_id
u16 content_size
u8[content_size] misc. stuff contained in the metadata
u16 mapblockobject_count
- always write as 0.
- if read != 0, just fail.
foreach mapblockobject_count:
- deprecated, should not be used. Length of this data can only be known by
properly parsing it. Just hope not to run into any of this.
u8 static object version:
- currently 0
u16 static_object_count
foreach static_object_count:
u8 type (object type-id)
s32 pos_x * 1000
s32 pos_y * 1000
s32 pos_z * 1000
u16 data_size
u8[data_size] data
u32 timestamp
- Timestamp when last saved, as seconds from starting the game.
- 0xffffffff = invalid/unknown timestamp, nothing will be done with the time
difference when loaded (recommended)
Node metadata format:
---------------------
Sign metadata:
u16 string_len
u8[string_len] string
Furnace metadata:
TBD
Chest metadata:
TBD
Locking Chest metadata:
u16 string_len
u8[string_len] string
TBD
// END
|
