update world_format.txt

doc/world_format.txt

@@ -327,6 +327,21 @@ u16 lighting_complete
  then Minetest will correct lighting in the day light bank when
  the block at (1, 0, 0) is also loaded.
 
+if map format version >= 29:
+ 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
+
+ u16 num_name_id_mappings
+
+ foreach num_name_id_mappings
+ u16 id
+ u16 name_len
+ u8[name_len] name
+if map format version < 29:
+ -- Nothing right here, timpstamp and node id mappings are serialized later
+
 u8 content_width
 - Number of bytes in the content (param0) fields of nodes
 if map format version <= 23:
@@ -338,7 +353,7 @@ u8 params_width
 - Number of bytes used for parameters per node
 - Always 2
 
-node data (zlib-compressed if version <= 28):
+node data (zlib-compressed if version < 29):
 if content_width == 1:
  - content:
  u8[4096]: param0 fields
@@ -351,31 +366,34 @@ if content_width == 2:
  u8[4096]: param2 fields
 - The location of a node in each of those arrays is (z*16*16 + y*16 + x).
 
-node metadata list (zlib-compressed if version <= 28)
-- 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. Format depends on type_id, see below.
-if map format version >= 23:
- u8 version -- Note: type was u16 for map format version <= 22
- -- = 1 for map format version < 28
- -- = 2 since map format version 28
- 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[key_len] key
- u32 val_len
- u8[val_len] value
- u8 is_private -- only for version >= 2. 0 = not private, 1 = private
- serialized inventory
+if map format version < 29:
+ 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. Format depends on type_id, see below.
+ if map format version >= 23:
+ u8 version -- Note: type was u16 for map format version <= 22
+ -- = 1 for map format version < 28
+ -- = 2 since map format version 28
+ 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[key_len] key
+ u32 val_len
+ u8[val_len] value
+ u8 is_private -- only for version >= 2. 0 = not private, 1 = private
+ serialized inventory
+if map format version >= 29:
+ -- Nothing right here, node metadata is serialized later
 
 - Node timers
 if map format version == 23:
@@ -406,20 +424,22 @@ foreach static_object_count:
  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
+if map format version < 29:
+ 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
+if map format version < 29:
+ u16 num_name_id_mappings
 
-foreach num_name_id_mappings
- u16 id
- u16 name_len
- u8[name_len] name
+ foreach num_name_id_mappings
+  u16 id
+  u16 name_len
+  u8[name_len] name
 
 - Node timers
 if map format version == 25:
@@ -430,6 +450,22 @@ if map format version == 25:
  s32 timeout*1000
  s32 elapsed*1000
 
+if map format version >= 29:
+ node metadata list
+ - content:
+ u8 version (always = 2)
+ 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[key_len] key
+ u32 val_len
+ u8[val_len] value
+ u8 is_private -- 0 = not private, 1 = private
+ serialized inventory
+
 EOF.
 
 Format of nodes