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authorest31 <MTest31@outlook.com>2015-09-18 15:02:02 +0200
committerest31 <MTest31@outlook.com>2015-09-18 16:47:13 +0200
commit691eb2d06d646ff96af9aaed0bfe823f64f0acda (patch)
treeb7ed787af8cbd1556a73db9254de1a936f0e652d
parent94f1e5d9bdd30725a7a63b668450dc0646a873cd (diff)
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Document current node metadata format
Document the node metadata changes of the commit (serialisation version >=23): 704782c95b8a4194a9383da55d93f37fd0f7278f "WIP node metadata, node timers"
-rw-r--r--doc/world_format.txt22
1 files changed, 18 insertions, 4 deletions
diff --git a/doc/world_format.txt b/doc/world_format.txt
index 105fbb63e..9255fa8c0 100644
--- a/doc/world_format.txt
+++ b/doc/world_format.txt
@@ -250,7 +250,7 @@ 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
+- map format version number, see serialisation.h for the latest number
u8 flags
- Flag bitmasks:
@@ -296,13 +296,26 @@ if content_width == 2:
zlib-compressed node metadata list
- content:
+if map format version <= 22:
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)
+ u8[content_size] content of metadata. Format depends on type_id, see below.
+if map format version >= 23:
+ u8 version (=1) -- Note the type is u8, while for map format version <= 22 it's u16
+ u16 count of metadata
+ foreach count:
+ u16 position (p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X)
+ u32 num_vars
+ foreach num_vars:
+ u16 key_len
+ u8[name_len] key
+ u32 val_len
+ u8[val_len] value
+ serialized inventory
- Node timers
if map format version == 23:
@@ -378,8 +391,9 @@ The name-id-mapping
--------------------
The mapping maps node content ids to node names.
-Node metadata format
----------------------
+Node metadata format for map format versions <= 22
+---------------------------------------------------
+The node metadata are serialized depending on the type_id field.
1: Generic metadata
serialized inventory