diff options
| -rw-r--r-- | doc/mapformat.txt | 64 | ||||
| -rw-r--r-- | src/mapblock.cpp | 23 | ||||
| -rw-r--r-- | src/nodetimer.cpp | 43 | ||||
| -rw-r--r-- | src/nodetimer.h | 4 | ||||
| -rw-r--r-- | src/serialization.h | 5 |
5 files changed, 98 insertions, 41 deletions
diff --git a/doc/mapformat.txt b/doc/mapformat.txt index ef16118c5..89863ea04 100644 --- a/doc/mapformat.txt +++ b/doc/mapformat.txt @@ -1,11 +1,12 @@ ============================= -Minetest World Format 22...23 +Minetest World Format 22...25 ============================= 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 -- 0.4.0. +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 @@ -262,17 +263,26 @@ u8 flags u8 content_width - Number of bytes in the content (param0) fields of nodes -- Always 1 +if map format version <= 23: + - Always 1 +if map format version >= 24: + - Always 2 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 +if content_width == 1: + - content: + u8[4096]: param0 fields + u8[4096]: param1 fields + u8[4096]: param2 fields +if content_width == 2: + - content: + u16[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 @@ -285,9 +295,19 @@ zlib-compressed node metadata list u16 content_size u8[content_size] (content of metadata) -- unused node timers (version will be 24 when they are actually used): -if version == 23: +- Node timers +if map format version == 23: u8 unused version (always 0) +if map format version == 24: (NOTE: Not released as stable) + u8 nodetimer_version + if nodetimer_version == 0: + (nothing else) + if nodetimer_version == 1: + u16 num_of_timers + foreach num_of_timers: + u16 timer position (z*16*16 + y*16 + x) + s32 timeout*1000 + s32 elapsed*1000 u8 static object version: - Always 0 @@ -317,17 +337,29 @@ foreach num_name_id_mappings u16 name_len u8[name_len] name +- Node timers +if map format version == 25: + u8 length of the data of a single timer (always 2+4+4=10) + u16 num_of_timers + foreach num_of_timers: + u16 timer position (z*16*16 + y*16 + x) + s32 timeout*1000 + s32 elapsed*1000 + 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) +if map format version <= 23: + The content id of a node is determined as so: + - If param0 < 0x80, + content_id = param0 + - Otherwise + content_id = (param0<<4) + (param2>>4) +if map format version >= 24: + The content id of a node is param0. The purpose of param1 and param2 depend on the definition of the node. diff --git a/src/mapblock.cpp b/src/mapblock.cpp index c7c820d42..b2da768f5 100644 --- a/src/mapblock.cpp +++ b/src/mapblock.cpp @@ -612,8 +612,10 @@ void MapBlock::serialize(std::ostream &os, u8 version, bool disk) */ if(disk) { - // Node timers - m_node_timers.serialize(os); + if(version <= 24){ + // Node timers + m_node_timers.serialize(os, version); + } // Static objects m_static_objects.serialize(os); @@ -623,6 +625,11 @@ void MapBlock::serialize(std::ostream &os, u8 version, bool disk) // Write block-specific node definition id mapping nimap.serialize(os); + + if(version >= 25){ + // Node timers + m_node_timers.serialize(os, version); + } } } @@ -696,10 +703,10 @@ void MapBlock::deSerialize(std::istream &is, u8 version, bool disk) // Read unused zero readU8(is); } - else if(version >= 24){ + if(version == 24){ TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos()) - <<": Node timers"<<std::endl); - m_node_timers.deSerialize(is); + <<": Node timers (ver==24)"<<std::endl); + m_node_timers.deSerialize(is, version); } // Static objects @@ -719,6 +726,12 @@ void MapBlock::deSerialize(std::istream &is, u8 version, bool disk) NameIdMapping nimap; nimap.deSerialize(is); correctBlockNodeIds(&nimap, data, m_gamedef); + + if(version >= 25){ + TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos()) + <<": Node timers (ver>=25)"<<std::endl); + m_node_timers.deSerialize(is, version); + } } TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos()) diff --git a/src/nodetimer.cpp b/src/nodetimer.cpp index b20bcf578..bf1e7435d 100644 --- a/src/nodetimer.cpp +++ b/src/nodetimer.cpp @@ -42,19 +42,22 @@ void NodeTimer::deSerialize(std::istream &is) NodeTimerList */ -void NodeTimerList::serialize(std::ostream &os) const +void NodeTimerList::serialize(std::ostream &os, u8 map_format_version) const { - /* - Version 0 is a placeholder for "nothing to see here; go away." - */ - - if(m_data.size() == 0){ - writeU8(os, 0); // version - return; + if(map_format_version == 24){ + // Version 0 is a placeholder for "nothing to see here; go away." + if(m_data.size() == 0){ + writeU8(os, 0); // version + return; + } + writeU8(os, 1); // version + writeU16(os, m_data.size()); } - writeU8(os, 1); // version - writeU16(os, m_data.size()); + if(map_format_version >= 25){ + writeU8(os, 2+4+4); + writeU16(os, m_data.size()); + } for(std::map<v3s16, NodeTimer>::const_iterator i = m_data.begin(); @@ -68,15 +71,23 @@ void NodeTimerList::serialize(std::ostream &os) const } } -void NodeTimerList::deSerialize(std::istream &is) +void NodeTimerList::deSerialize(std::istream &is, u8 map_format_version) { m_data.clear(); + + if(map_format_version == 24){ + u8 timer_version = readU8(is); + if(timer_version == 0) + return; + if(timer_version != 1) + throw SerializationError("unsupported NodeTimerList version"); + } - u8 version = readU8(is); - if(version == 0) - return; - if(version != 1) - throw SerializationError("unsupported NodeTimerList version"); + if(map_format_version >= 25){ + u8 timer_data_len = readU8(is); + if(timer_data_len != 2+4+4) + throw SerializationError("unsupported NodeTimer data length"); + } u16 count = readU16(is); diff --git a/src/nodetimer.h b/src/nodetimer.h index f8d3e1c57..c643ab888 100644 --- a/src/nodetimer.h +++ b/src/nodetimer.h @@ -57,8 +57,8 @@ public: NodeTimerList() {} ~NodeTimerList() {} - void serialize(std::ostream &os) const; - void deSerialize(std::istream &is); + void serialize(std::ostream &os, u8 map_format_version) const; + void deSerialize(std::istream &is, u8 map_format_version); // Get timer NodeTimer get(v3s16 p){ diff --git a/src/serialization.h b/src/serialization.h index 0d74ccf48..533ddc8c4 100644 --- a/src/serialization.h +++ b/src/serialization.h @@ -59,12 +59,13 @@ with this program; if not, write to the Free Software Foundation, Inc., 21: dynamic content type allocation 22: minerals removed, facedir & wallmounted changed 23: new node metadata format - 24: 16-bit node ids and node timers + 24: 16-bit node ids and node timers (never released as stable) + 25: Improved node timer format */ // This represents an uninitialized or invalid format #define SER_FMT_VER_INVALID 255 // Highest supported serialization version -#define SER_FMT_VER_HIGHEST 24 +#define SER_FMT_VER_HIGHEST 25 // Lowest supported serialization version #define SER_FMT_VER_LOWEST 0 |