550 lines
13 KiB
Plaintext
550 lines
13 KiB
Plaintext
=============================
|
|
Minetest World Format 22...23
|
|
=============================
|
|
|
|
This applies to a world format carrying the block serialization version
|
|
22...23, used at least in 0.4.dev-20120322 ... 0.4.dev-20120606.
|
|
|
|
The block serialization version 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. Also you
|
|
may stumble upon all kinds of oddities in not-so-recent formats.
|
|
|
|
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
|
|
| '-- Foo ------ Player file
|
|
`-- world.mt ----- World metadata
|
|
|
|
auth.txt
|
|
---------
|
|
Contains authentication data, player per line.
|
|
<name>:<password hash>:<privilege1,...>
|
|
Format of password hash is <name><password> SHA1'd, in the base64 encoding.
|
|
|
|
Example lines:
|
|
- Player "celeron55", no password, privileges "interact" and "shout":
|
|
celeron55::interact,shout
|
|
- Player "Foo", password "bar", privilege "shout":
|
|
foo:iEPX+SQWIR3p67lj/0zigSWTKHg:shout
|
|
- Player "bar", no password, no privileges:
|
|
bar::
|
|
|
|
env_meta.txt
|
|
-------------
|
|
Simple global environment variables.
|
|
Example content (added indentation):
|
|
game_time = 73471
|
|
time_of_day = 19118
|
|
EnvArgsEnd
|
|
|
|
ipban.txt
|
|
----------
|
|
Banned IP addresses and usernames.
|
|
Example content (added indentation):
|
|
123.456.78.9|foo
|
|
123.456.78.10|bar
|
|
|
|
map_meta.txt
|
|
-------------
|
|
Simple global map variables.
|
|
Example content (added indentation):
|
|
seed = 7980462765762429666
|
|
[end_of_params]
|
|
|
|
map.sqlite
|
|
-----------
|
|
Map data.
|
|
See Map File Format below.
|
|
|
|
player1, Foo
|
|
-------------
|
|
Player data.
|
|
Filename can be anything.
|
|
See Player File Format below.
|
|
|
|
world.mt
|
|
---------
|
|
World metadata.
|
|
Example content (added indentation):
|
|
gameid = mesetint
|
|
|
|
Player File Format
|
|
===================
|
|
|
|
- Should be pretty self-explanatory.
|
|
- Note: position is in nodes * 10
|
|
|
|
Example content (added indentation):
|
|
hp = 11
|
|
name = celeron55
|
|
pitch = 39.77
|
|
position = (-5231.97,15,1961.41)
|
|
version = 1
|
|
yaw = 101.37
|
|
PlayerArgsEnd
|
|
List main 32
|
|
Item default:torch 13
|
|
Item default:pick_steel 1 50112
|
|
Item experimental:tnt
|
|
Item default:cobble 99
|
|
Item default:pick_stone 1 13104
|
|
Item default:shovel_steel 1 51838
|
|
Item default:dirt 61
|
|
Item default:rail 78
|
|
Item default:coal_lump 3
|
|
Item default:cobble 99
|
|
Item default:leaves 22
|
|
Item default:gravel 52
|
|
Item default:axe_steel 1 2045
|
|
Item default:cobble 98
|
|
Item default:sand 61
|
|
Item default:water_source 94
|
|
Item default:glass 2
|
|
Item default:mossycobble
|
|
Item default:pick_steel 1 64428
|
|
Item animalmaterials:bone
|
|
Item default:sword_steel
|
|
Item default:sapling
|
|
Item default:sword_stone 1 10647
|
|
Item default:dirt 99
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
EndInventoryList
|
|
List craft 9
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
EndInventoryList
|
|
List craftpreview 1
|
|
Empty
|
|
EndInventoryList
|
|
List craftresult 1
|
|
Empty
|
|
EndInventoryList
|
|
EndInventory
|
|
|
|
Map File Format
|
|
================
|
|
|
|
Minetest maps consist of MapBlocks, chunks of 16x16x16 nodes.
|
|
|
|
In addition to the bulk node data, MapBlocks stored on disk also contain
|
|
other things.
|
|
|
|
History
|
|
--------
|
|
We need a bit of history in here. Initially Minetest stored maps in a
|
|
format called the "sectors" format. It was a directory/file structure like
|
|
this:
|
|
sectors2/XXX/ZZZ/YYYY
|
|
For example, the MapBlock at (0,1,-2) was this file:
|
|
sectors2/000/ffd/0001
|
|
|
|
Eventually Minetest outgrow this directory structure, as filesystems were
|
|
struggling under the amount of files and directories.
|
|
|
|
Large servers seriously needed a new format, and thus the base of the
|
|
current format was invented, suggested by celeron55 and implemented by
|
|
JacobF.
|
|
|
|
SQLite3 was slammed in, and blocks files were directly inserted as blobs
|
|
in a single table, indexed by integer primary keys, oddly mangled from
|
|
coordinates.
|
|
|
|
Today we know that SQLite3 allows multiple primary keys (which would allow
|
|
storing coordinates separately), but the format has been kept unchanged for
|
|
that part. So, this is where it has come.
|
|
</history>
|
|
|
|
So here goes
|
|
-------------
|
|
map.sqlite is an sqlite3 database, containg a single table, called
|
|
"blocks". It looks like this:
|
|
|
|
CREATE TABLE `blocks` (`pos` INT NOT NULL PRIMARY KEY,`data` BLOB);
|
|
|
|
The key
|
|
--------
|
|
"pos" is created from the three coordinates of a MapBlock using this
|
|
algorithm, defined here in Python:
|
|
|
|
def getBlockAsInteger(p):
|
|
return int64(p[2]*16777216 + p[1]*4096 + p[0])
|
|
|
|
def int64(u):
|
|
while u >= 2**63:
|
|
u -= 2**64
|
|
while u <= -2**63:
|
|
u += 2**64
|
|
return u
|
|
|
|
It can be converted the other way by using this code:
|
|
|
|
def getIntegerAsBlock(i):
|
|
x = unsignedToSigned(i % 4096, 2048)
|
|
i = int((i - x) / 4096)
|
|
y = unsignedToSigned(i % 4096, 2048)
|
|
i = int((i - y) / 4096)
|
|
z = unsignedToSigned(i % 4096, 2048)
|
|
return x,y,z
|
|
|
|
def unsignedToSigned(i, max_positive):
|
|
if i < max_positive:
|
|
return i
|
|
else:
|
|
return i - 2*max_positive
|
|
|
|
The blob
|
|
---------
|
|
The blob is the data that would have otherwise gone into the file.
|
|
|
|
See below for description.
|
|
|
|
MapBlock serialization format
|
|
==============================
|
|
NOTE: Byte order is MSB first (big-endian).
|
|
NOTE: Zlib data is in such a format that Python's zlib at least can
|
|
directly decompress.
|
|
|
|
u8 version
|
|
- map format version number, this one is version 22
|
|
|
|
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.
|
|
- 0x08: generated: True if the block has been generated. If false, block
|
|
is mostly filled with CONTENT_IGNORE and is likely to contain eg. parts
|
|
of trees of neighboring blocks.
|
|
|
|
u8 content_width
|
|
- Number of bytes in the content (param0) fields of nodes
|
|
- Always 1
|
|
|
|
u8 params_width
|
|
- Number of bytes used for parameters per node
|
|
- Always 2
|
|
|
|
zlib-compressed node data:
|
|
- content:
|
|
u8[4096]: param0 fields
|
|
u8[4096]: param1 fields
|
|
u8[4096]: param2 fields
|
|
- The location of a node in each of those arrays is (z*16*16 + y*16 + x).
|
|
|
|
zlib-compressed node metadata list
|
|
- 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] (content of metadata)
|
|
|
|
- unused node timers (version will be 24 when they are actually used):
|
|
if version == 23:
|
|
u8 unused version (always 0)
|
|
|
|
u8 static object version:
|
|
- Always 0
|
|
|
|
u16 static_object_count
|
|
|
|
foreach static_object_count:
|
|
u8 type (object type-id)
|
|
s32 pos_x_nodes * 10000
|
|
s32 pos_y_nodes * 10000
|
|
s32 pos_z_nodes * 10000
|
|
u16 data_size
|
|
u8[data_size] data
|
|
|
|
u32 timestamp
|
|
- Timestamp when last saved, as seconds from starting the game.
|
|
- 0xffffffff = invalid/unknown timestamp, nothing should be done with the time
|
|
difference when loaded
|
|
|
|
u8 name-id-mapping version
|
|
- Always 0
|
|
|
|
u16 num_name_id_mappings
|
|
|
|
foreach num_name_id_mappings
|
|
u16 id
|
|
u16 name_len
|
|
u8[name_len] name
|
|
|
|
EOF.
|
|
|
|
Format of nodes
|
|
----------------
|
|
A node is composed of the u8 fields param0, param1 and param2.
|
|
|
|
The content id of a node is determined as so:
|
|
- If param0 < 0x80,
|
|
content_id = param0
|
|
- Otherwise
|
|
content_id = (param0<<4) + (param2>>4)
|
|
|
|
The purpose of param1 and param2 depend on the definition of the node.
|
|
|
|
The name-id-mapping
|
|
--------------------
|
|
The mapping maps node content ids to node names.
|
|
|
|
Node metadata format
|
|
---------------------
|
|
|
|
1: Generic metadata
|
|
serialized inventory
|
|
u32 len
|
|
u8[len] text
|
|
u16 len
|
|
u8[len] owner
|
|
u16 len
|
|
u8[len] infotext
|
|
u16 len
|
|
u8[len] inventory drawspec
|
|
u8 allow_text_input (bool)
|
|
u8 removal_disabled (bool)
|
|
u8 enforce_owner (bool)
|
|
u32 num_vars
|
|
foreach num_vars
|
|
u16 len
|
|
u8[len] name
|
|
u32 len
|
|
u8[len] value
|
|
|
|
14: Sign metadata
|
|
u16 text_len
|
|
u8[text_len] text
|
|
|
|
15: Chest metadata
|
|
serialized inventory
|
|
|
|
16: Furnace metadata
|
|
TBD
|
|
|
|
17: Locked Chest metadata
|
|
u16 len
|
|
u8[len] owner
|
|
serialized inventory
|
|
|
|
Static objects
|
|
---------------
|
|
Static objects are persistent freely moving objects in the world.
|
|
|
|
Object types:
|
|
1: Test object
|
|
2: Item
|
|
3: Rat (deprecated)
|
|
4: Oerkki (deprecated)
|
|
5: Firefly (deprecated)
|
|
6: MobV2 (deprecated)
|
|
7: LuaEntity
|
|
|
|
1: Item:
|
|
u8 version
|
|
version 0:
|
|
u16 len
|
|
u8[len] itemstring
|
|
|
|
7: LuaEntity:
|
|
u8 version
|
|
version 1:
|
|
u16 len
|
|
u8[len] entity name
|
|
u32 len
|
|
u8[len] static data
|
|
s16 hp
|
|
s32 velocity.x * 10000
|
|
s32 velocity.y * 10000
|
|
s32 velocity.z * 10000
|
|
s32 yaw * 1000
|
|
|
|
Itemstring format
|
|
------------------
|
|
eg. 'default:dirt 5'
|
|
eg. 'default:pick_wood 21323'
|
|
eg. '"default:apple" 2'
|
|
eg. 'default:apple'
|
|
- The wear value in tools is 0...65535
|
|
- There are also a number of older formats that you might stumble upon:
|
|
eg. 'node "default:dirt" 5'
|
|
eg. 'NodeItem default:dirt 5'
|
|
eg. 'ToolItem WPick 21323'
|
|
|
|
Inventory serialization format
|
|
-------------------------------
|
|
- The inventory serialization format is line-based
|
|
- The newline character used is "\n"
|
|
- The end condition of a serialized inventory is always "EndInventory\n"
|
|
- All the slots in a list must always be serialized.
|
|
|
|
Example (format does not include "---"):
|
|
---
|
|
List foo 4
|
|
Item default:sapling
|
|
Item default:sword_stone 1 10647
|
|
Item default:dirt 99
|
|
Empty
|
|
EndInventoryList
|
|
List bar 9
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
Empty
|
|
EndInventoryList
|
|
EndInventory
|
|
---
|
|
|
|
==============================================
|
|
Minetest World Format used as of 2011-05 or so
|
|
==============================================
|
|
|
|
Map data serialization format version 17.
|
|
|
|
0.3.1 does not use this format, but a more recent one. This exists here for
|
|
historical reasons.
|
|
|
|
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
|
|
|