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=============================
Minetest World Format 22...25
=============================
This applies to a world format carrying the block serialization version
22...25, used at least in
- 0.4.dev-20120322 ... 0.4.dev-20120606 (22...23)
- 0.4.0 (23)
- 24 was never released as stable and existed for ~2 days
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
