The NBT Editor is an easy to use NBT editor. The NBT file format is used by minecraft to store the data of the worlds.
The project can be build via ANT (build.xml). The following jars are generated:
-
nbt
A command line version to generate readable nbt representations. In combination with with the source package this jar can be imported in other projects to use the nbt api.
-
nbt_edit
The visual nbt editor.
-
nbt_map
A minecraft anvil map viewer and editor. Better run with -Xmx2g or more for larger maps.
NOTE THAT ALL CHANGES TO A MAP IN THIS VIEW ARE PERMANENT!
So you better should backup your world before loading it in this editor. Edit the world by choosing a brush and right click on the map. The slider can be used to set the radius.
-
nbt_src
A zip file containing the sources of this project.
The content of a NBT file is a gzipped stream of byte data. The following grammar is a complete description of the format:
RECORD := END | REAL_RECORD
REAL_RECORD := BYTE | SHORT | INT | LONG | FLOAT | DOUBLE
| BYTE_ARRAY | STRING | LIST | COMPOUND | INT_ARRAY
END := 0
BYTE := 1 NAME RAW_BYTE
SHORT := 2 NAME RAW_SHORT
INT := 3 NAME RAW_INT
LONG := 4 NAME RAW_LONG
FLOAT := 5 NAME RAW_FLOAT
DOUBLE := 6 NAME RAW_DOUBLE
BYTE_ARRAY := 7 NAME RAW_BYTE_ARRAY
STRING := 8 NAME RAW_STRING
LIST := 9 NAME RAW_LIST
COMPOUND := 10 NAME RAW_COMPOUND
INT_ARRAY := 11 NAME RAW_INT_ARRAY
NAME := RAW_STRING
RAW_BYTE := <signed byte>
RAW_SHORT := <big endian signed short>
RAW_INT := <big endian signed integer>
RAW_LONG := <big endian signed long>
RAW_FLOAT := <big endian IEEE 754-2008 float>
RAW_DOUBLE := <big endian IEEE 754-2008 double>
RAW_BYTE_ARRAY := RAW_INT <byte array with length given by integer>
RAW_STRING := RAW_SHORT <utf8 string with length given by short>
RAW_LIST := [0-10] RAW_INT ITEM
// type of item given by byte and length given by integer
ITEM := RAW_ITEM (ITEM |)
RAW_ITEM := RAW_BYTE | RAW_SHORT | RAW_INT | RAW_LONG | RAW_FLOAT
| RAW_DOUBLE | RAW_BYTE_ARRAY | RAW_STRING | RAW_LIST | RAW_COMPOUND
// names within a compound must be unique
RAW_COMPOUND := REAL_RECORD RAW_COMPOUND | END
RAW_INT_ARRAY := RAW_INT <int array with length given by integer>
The start symbol is RECORD and all numeric symbols stand for the byte representation.
This project also provides an api to manipulate nbt files.
With the classes nbt.read.NBTReader and nbt.write.NBTWriter
streams or files containing nbt content can be read and written.
The class nbt.record.NBTRecord is the main class for nbt content.