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- /*
- Minetest
- Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include "mapblock.h"
- #include <sstream>
- #include "map.h"
- #include "light.h"
- #include "nodedef.h"
- #include "nodemetadata.h"
- #include "gamedef.h"
- #include "log.h"
- #include "nameidmapping.h"
- #include "content_mapnode.h" // For legacy name-id mapping
- #include "content_nodemeta.h" // For legacy deserialization
- #include "serialization.h"
- #ifndef SERVER
- #include "mapblock_mesh.h"
- #endif
- #include "util/string.h"
- #include "util/serialize.h"
- #include "util/basic_macros.h"
- static const char *modified_reason_strings[] = {
- "initial",
- "reallocate",
- "setIsUnderground",
- "setLightingExpired",
- "setGenerated",
- "setNode",
- "setNodeNoCheck",
- "setTimestamp",
- "NodeMetaRef::reportMetadataChange",
- "clearAllObjects",
- "Timestamp expired (step)",
- "addActiveObjectRaw",
- "removeRemovedObjects/remove",
- "removeRemovedObjects/deactivate",
- "Stored list cleared in activateObjects due to overflow",
- "deactivateFarObjects: Static data moved in",
- "deactivateFarObjects: Static data moved out",
- "deactivateFarObjects: Static data changed considerably",
- "finishBlockMake: expireDayNightDiff",
- "unknown",
- };
- /*
- MapBlock
- */
- MapBlock::MapBlock(Map *parent, v3s16 pos, IGameDef *gamedef, bool dummy):
- m_parent(parent),
- m_pos(pos),
- m_pos_relative(pos * MAP_BLOCKSIZE),
- m_gamedef(gamedef)
- {
- if (!dummy)
- reallocate();
- }
- MapBlock::~MapBlock()
- {
- #ifndef SERVER
- {
- delete mesh;
- mesh = nullptr;
- }
- #endif
- delete[] data;
- }
- bool MapBlock::isValidPositionParent(v3s16 p)
- {
- if (isValidPosition(p)) {
- return true;
- }
- return m_parent->isValidPosition(getPosRelative() + p);
- }
- MapNode MapBlock::getNodeParent(v3s16 p, bool *is_valid_position)
- {
- if (!isValidPosition(p))
- return m_parent->getNodeNoEx(getPosRelative() + p, is_valid_position);
- if (!data) {
- if (is_valid_position)
- *is_valid_position = false;
- return {CONTENT_IGNORE};
- }
- if (is_valid_position)
- *is_valid_position = true;
- return data[p.Z * zstride + p.Y * ystride + p.X];
- }
- std::string MapBlock::getModifiedReasonString()
- {
- std::string reason;
- const u32 ubound = MYMIN(sizeof(m_modified_reason) * CHAR_BIT,
- ARRLEN(modified_reason_strings));
- for (u32 i = 0; i != ubound; i++) {
- if ((m_modified_reason & (1 << i)) == 0)
- continue;
- reason += modified_reason_strings[i];
- reason += ", ";
- }
- if (reason.length() > 2)
- reason.resize(reason.length() - 2);
- return reason;
- }
- /*
- Propagates sunlight down through the block.
- Doesn't modify nodes that are not affected by sunlight.
- Returns false if sunlight at bottom block is invalid.
- Returns true if sunlight at bottom block is valid.
- Returns true if bottom block doesn't exist.
- If there is a block above, continues from it.
- If there is no block above, assumes there is sunlight, unless
- is_underground is set or highest node is water.
- All sunlighted nodes are added to light_sources.
- if remove_light==true, sets non-sunlighted nodes black.
- if black_air_left!=NULL, it is set to true if non-sunlighted
- air is left in block.
- */
- bool MapBlock::propagateSunlight(std::set<v3s16> & light_sources,
- bool remove_light, bool *black_air_left)
- {
- INodeDefManager *nodemgr = m_gamedef->ndef();
- // Whether the sunlight at the top of the bottom block is valid
- bool block_below_is_valid = true;
- v3s16 pos_relative = getPosRelative();
- for(s16 x=0; x<MAP_BLOCKSIZE; x++)
- {
- for(s16 z=0; z<MAP_BLOCKSIZE; z++)
- {
- #if 1
- bool no_sunlight = false;
- //bool no_top_block = false;
- // Check if node above block has sunlight
- bool is_valid_position;
- MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z),
- &is_valid_position);
- if (is_valid_position)
- {
- if(n.getContent() == CONTENT_IGNORE)
- {
- // Trust heuristics
- no_sunlight = is_underground;
- }
- else if(n.getLight(LIGHTBANK_DAY, m_gamedef->ndef()) != LIGHT_SUN)
- {
- no_sunlight = true;
- }
- }
- else
- {
- //no_top_block = true;
- // NOTE: This makes over-ground roofed places sunlighted
- // Assume sunlight, unless is_underground==true
- if(is_underground)
- {
- no_sunlight = true;
- }
- else
- {
- MapNode n = getNodeNoEx(v3s16(x, MAP_BLOCKSIZE-1, z));
- if (!m_gamedef->ndef()->get(n).sunlight_propagates) {
- no_sunlight = true;
- }
- }
- // NOTE: As of now, this just would make everything dark.
- // No sunlight here
- //no_sunlight = true;
- }
- #endif
- #if 0 // Doesn't work; nothing gets light.
- bool no_sunlight = true;
- bool no_top_block = false;
- // Check if node above block has sunlight
- try{
- MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
- if(n.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
- {
- no_sunlight = false;
- }
- }
- catch(InvalidPositionException &e)
- {
- no_top_block = true;
- }
- #endif
- /*std::cout<<"("<<x<<","<<z<<"): "
- <<"no_top_block="<<no_top_block
- <<", is_underground="<<is_underground
- <<", no_sunlight="<<no_sunlight
- <<std::endl;*/
- s16 y = MAP_BLOCKSIZE-1;
- // This makes difference to diminishing in water.
- bool stopped_to_solid_object = false;
- u8 current_light = no_sunlight ? 0 : LIGHT_SUN;
- for(; y >= 0; y--)
- {
- v3s16 pos(x, y, z);
- MapNode &n = getNodeRef(pos);
- if(current_light == 0)
- {
- // Do nothing
- }
- else if(current_light == LIGHT_SUN && nodemgr->get(n).sunlight_propagates)
- {
- // Do nothing: Sunlight is continued
- } else if (!nodemgr->get(n).light_propagates) {
- // A solid object is on the way.
- stopped_to_solid_object = true;
- // Light stops.
- current_light = 0;
- }
- else
- {
- // Diminish light
- current_light = diminish_light(current_light);
- }
- u8 old_light = n.getLight(LIGHTBANK_DAY, nodemgr);
- if(current_light > old_light || remove_light)
- {
- n.setLight(LIGHTBANK_DAY, current_light, nodemgr);
- }
- if(diminish_light(current_light) != 0)
- {
- light_sources.insert(pos_relative + pos);
- }
- if(current_light == 0 && stopped_to_solid_object)
- {
- if(black_air_left)
- {
- *black_air_left = true;
- }
- }
- }
- // Whether or not the block below should see LIGHT_SUN
- bool sunlight_should_go_down = (current_light == LIGHT_SUN);
- /*
- If the block below hasn't already been marked invalid:
- Check if the node below the block has proper sunlight at top.
- If not, the block below is invalid.
- Ignore non-transparent nodes as they always have no light
- */
- if(block_below_is_valid)
- {
- MapNode n = getNodeParent(v3s16(x, -1, z), &is_valid_position);
- if (is_valid_position) {
- if(nodemgr->get(n).light_propagates)
- {
- if(n.getLight(LIGHTBANK_DAY, nodemgr) == LIGHT_SUN
- && !sunlight_should_go_down)
- block_below_is_valid = false;
- else if(n.getLight(LIGHTBANK_DAY, nodemgr) != LIGHT_SUN
- && sunlight_should_go_down)
- block_below_is_valid = false;
- }
- }
- else
- {
- /*std::cout<<"InvalidBlockException for bottom block node"
- <<std::endl;*/
- // Just no block below, no need to panic.
- }
- }
- }
- }
- return block_below_is_valid;
- }
- void MapBlock::copyTo(VoxelManipulator &dst)
- {
- v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
- VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
- // Copy from data to VoxelManipulator
- dst.copyFrom(data, data_area, v3s16(0,0,0),
- getPosRelative(), data_size);
- }
- void MapBlock::copyFrom(VoxelManipulator &dst)
- {
- v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
- VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
- // Copy from VoxelManipulator to data
- dst.copyTo(data, data_area, v3s16(0,0,0),
- getPosRelative(), data_size);
- }
- void MapBlock::actuallyUpdateDayNightDiff()
- {
- INodeDefManager *nodemgr = m_gamedef->ndef();
- // Running this function un-expires m_day_night_differs
- m_day_night_differs_expired = false;
- if (!data) {
- m_day_night_differs = false;
- return;
- }
- bool differs = false;
- /*
- Check if any lighting value differs
- */
- MapNode previous_n(CONTENT_IGNORE);
- for (u32 i = 0; i < nodecount; i++) {
- MapNode n = data[i];
- // If node is identical to previous node, don't verify if it differs
- if (n == previous_n)
- continue;
- differs = !n.isLightDayNightEq(nodemgr);
- if (differs)
- break;
- previous_n = n;
- }
- /*
- If some lighting values differ, check if the whole thing is
- just air. If it is just air, differs = false
- */
- if (differs) {
- bool only_air = true;
- for (u32 i = 0; i < nodecount; i++) {
- MapNode &n = data[i];
- if (n.getContent() != CONTENT_AIR) {
- only_air = false;
- break;
- }
- }
- if (only_air)
- differs = false;
- }
- // Set member variable
- m_day_night_differs = differs;
- }
- void MapBlock::expireDayNightDiff()
- {
- if (!data) {
- m_day_night_differs = false;
- m_day_night_differs_expired = false;
- return;
- }
- m_day_night_differs_expired = true;
- }
- s16 MapBlock::getGroundLevel(v2s16 p2d)
- {
- if(isDummy())
- return -3;
- try
- {
- s16 y = MAP_BLOCKSIZE-1;
- for(; y>=0; y--)
- {
- MapNode n = getNodeRef(p2d.X, y, p2d.Y);
- if (m_gamedef->ndef()->get(n).walkable) {
- if(y == MAP_BLOCKSIZE-1)
- return -2;
- return y;
- }
- }
- return -1;
- }
- catch(InvalidPositionException &e)
- {
- return -3;
- }
- }
- /*
- Serialization
- */
- // List relevant id-name pairs for ids in the block using nodedef
- // Renumbers the content IDs (starting at 0 and incrementing
- // use static memory requires about 65535 * sizeof(int) ram in order to be
- // sure we can handle all content ids. But it's absolutely worth it as it's
- // a speedup of 4 for one of the major time consuming functions on storing
- // mapblocks.
- static content_t getBlockNodeIdMapping_mapping[USHRT_MAX + 1];
- static void getBlockNodeIdMapping(NameIdMapping *nimap, MapNode *nodes,
- INodeDefManager *nodedef)
- {
- memset(getBlockNodeIdMapping_mapping, 0xFF, (USHRT_MAX + 1) * sizeof(content_t));
- std::set<content_t> unknown_contents;
- content_t id_counter = 0;
- for (u32 i = 0; i < MapBlock::nodecount; i++) {
- content_t global_id = nodes[i].getContent();
- content_t id = CONTENT_IGNORE;
- // Try to find an existing mapping
- if (getBlockNodeIdMapping_mapping[global_id] != 0xFFFF) {
- id = getBlockNodeIdMapping_mapping[global_id];
- }
- else
- {
- // We have to assign a new mapping
- id = id_counter++;
- getBlockNodeIdMapping_mapping[global_id] = id;
- const ContentFeatures &f = nodedef->get(global_id);
- const std::string &name = f.name;
- if (name.empty())
- unknown_contents.insert(global_id);
- else
- nimap->set(id, name);
- }
- // Update the MapNode
- nodes[i].setContent(id);
- }
- for (u16 unknown_content : unknown_contents) {
- errorstream << "getBlockNodeIdMapping(): IGNORING ERROR: "
- << "Name for node id " << unknown_content << " not known" << std::endl;
- }
- }
- // Correct ids in the block to match nodedef based on names.
- // Unknown ones are added to nodedef.
- // Will not update itself to match id-name pairs in nodedef.
- static void correctBlockNodeIds(const NameIdMapping *nimap, MapNode *nodes,
- IGameDef *gamedef)
- {
- INodeDefManager *nodedef = gamedef->ndef();
- // This means the block contains incorrect ids, and we contain
- // the information to convert those to names.
- // nodedef contains information to convert our names to globally
- // correct ids.
- std::unordered_set<content_t> unnamed_contents;
- std::unordered_set<std::string> unallocatable_contents;
- bool previous_exists = false;
- content_t previous_local_id = CONTENT_IGNORE;
- content_t previous_global_id = CONTENT_IGNORE;
- for (u32 i = 0; i < MapBlock::nodecount; i++) {
- content_t local_id = nodes[i].getContent();
- // If previous node local_id was found and same than before, don't lookup maps
- // apply directly previous resolved id
- // This permits to massively improve loading performance when nodes are similar
- // example: default:air, default:stone are massively present
- if (previous_exists && local_id == previous_local_id) {
- nodes[i].setContent(previous_global_id);
- continue;
- }
- std::string name;
- if (!nimap->getName(local_id, name)) {
- unnamed_contents.insert(local_id);
- previous_exists = false;
- continue;
- }
- content_t global_id;
- if (!nodedef->getId(name, global_id)) {
- global_id = gamedef->allocateUnknownNodeId(name);
- if (global_id == CONTENT_IGNORE) {
- unallocatable_contents.insert(name);
- previous_exists = false;
- continue;
- }
- }
- nodes[i].setContent(global_id);
- // Save previous node local_id & global_id result
- previous_local_id = local_id;
- previous_global_id = global_id;
- previous_exists = true;
- }
- for (const content_t c: unnamed_contents) {
- errorstream << "correctBlockNodeIds(): IGNORING ERROR: "
- << "Block contains id " << c
- << " with no name mapping" << std::endl;
- }
- for (const std::string &node_name: unallocatable_contents) {
- errorstream << "correctBlockNodeIds(): IGNORING ERROR: "
- << "Could not allocate global id for node name \""
- << node_name << "\"" << std::endl;
- }
- }
- void MapBlock::serialize(std::ostream &os, u8 version, bool disk)
- {
- if(!ser_ver_supported(version))
- throw VersionMismatchException("ERROR: MapBlock format not supported");
- if (!data)
- throw SerializationError("ERROR: Not writing dummy block.");
- FATAL_ERROR_IF(version < SER_FMT_VER_LOWEST_WRITE, "Serialisation version error");
- // First byte
- u8 flags = 0;
- if(is_underground)
- flags |= 0x01;
- if(getDayNightDiff())
- flags |= 0x02;
- if (!m_generated)
- flags |= 0x08;
- writeU8(os, flags);
- if (version >= 27) {
- writeU16(os, m_lighting_complete);
- }
- /*
- Bulk node data
- */
- NameIdMapping nimap;
- if(disk)
- {
- MapNode *tmp_nodes = new MapNode[nodecount];
- for(u32 i=0; i<nodecount; i++)
- tmp_nodes[i] = data[i];
- getBlockNodeIdMapping(&nimap, tmp_nodes, m_gamedef->ndef());
- u8 content_width = 2;
- u8 params_width = 2;
- writeU8(os, content_width);
- writeU8(os, params_width);
- MapNode::serializeBulk(os, version, tmp_nodes, nodecount,
- content_width, params_width, true);
- delete[] tmp_nodes;
- }
- else
- {
- u8 content_width = 2;
- u8 params_width = 2;
- writeU8(os, content_width);
- writeU8(os, params_width);
- MapNode::serializeBulk(os, version, data, nodecount,
- content_width, params_width, true);
- }
- /*
- Node metadata
- */
- std::ostringstream oss(std::ios_base::binary);
- m_node_metadata.serialize(oss, version, disk);
- compressZlib(oss.str(), os);
- /*
- Data that goes to disk, but not the network
- */
- if(disk)
- {
- if(version <= 24){
- // Node timers
- m_node_timers.serialize(os, version);
- }
- // Static objects
- m_static_objects.serialize(os);
- // Timestamp
- writeU32(os, getTimestamp());
- // Write block-specific node definition id mapping
- nimap.serialize(os);
- if(version >= 25){
- // Node timers
- m_node_timers.serialize(os, version);
- }
- }
- }
- void MapBlock::serializeNetworkSpecific(std::ostream &os)
- {
- if (!data) {
- throw SerializationError("ERROR: Not writing dummy block.");
- }
- writeU8(os, 1); // version
- writeF1000(os, 0); // deprecated heat
- writeF1000(os, 0); // deprecated humidity
- }
- void MapBlock::deSerialize(std::istream &is, u8 version, bool disk)
- {
- if(!ser_ver_supported(version))
- throw VersionMismatchException("ERROR: MapBlock format not supported");
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())<<std::endl);
- m_day_night_differs_expired = false;
- if(version <= 21)
- {
- deSerialize_pre22(is, version, disk);
- return;
- }
- u8 flags = readU8(is);
- is_underground = (flags & 0x01) != 0;
- m_day_night_differs = (flags & 0x02) != 0;
- if (version < 27)
- m_lighting_complete = 0xFFFF;
- else
- m_lighting_complete = readU16(is);
- m_generated = (flags & 0x08) == 0;
- /*
- Bulk node data
- */
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())
- <<": Bulk node data"<<std::endl);
- u8 content_width = readU8(is);
- u8 params_width = readU8(is);
- if(content_width != 1 && content_width != 2)
- throw SerializationError("MapBlock::deSerialize(): invalid content_width");
- if(params_width != 2)
- throw SerializationError("MapBlock::deSerialize(): invalid params_width");
- MapNode::deSerializeBulk(is, version, data, nodecount,
- content_width, params_width, true);
- /*
- NodeMetadata
- */
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())
- <<": Node metadata"<<std::endl);
- // Ignore errors
- try {
- std::ostringstream oss(std::ios_base::binary);
- decompressZlib(is, oss);
- std::istringstream iss(oss.str(), std::ios_base::binary);
- if (version >= 23)
- m_node_metadata.deSerialize(iss, m_gamedef->idef());
- else
- content_nodemeta_deserialize_legacy(iss,
- &m_node_metadata, &m_node_timers,
- m_gamedef->idef());
- } catch(SerializationError &e) {
- warningstream<<"MapBlock::deSerialize(): Ignoring an error"
- <<" while deserializing node metadata at ("
- <<PP(getPos())<<": "<<e.what()<<std::endl;
- }
- /*
- Data that is only on disk
- */
- if(disk)
- {
- // Node timers
- if(version == 23){
- // Read unused zero
- readU8(is);
- }
- if(version == 24){
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())
- <<": Node timers (ver==24)"<<std::endl);
- m_node_timers.deSerialize(is, version);
- }
- // Static objects
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())
- <<": Static objects"<<std::endl);
- m_static_objects.deSerialize(is);
- // Timestamp
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())
- <<": Timestamp"<<std::endl);
- setTimestamp(readU32(is));
- m_disk_timestamp = m_timestamp;
- // Dynamically re-set ids based on node names
- TRACESTREAM(<<"MapBlock::deSerialize "<<PP(getPos())
- <<": NameIdMapping"<<std::endl);
- 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())
- <<": Done."<<std::endl);
- }
- void MapBlock::deSerializeNetworkSpecific(std::istream &is)
- {
- try {
- int version = readU8(is);
- //if(version != 1)
- // throw SerializationError("unsupported MapBlock version");
- if(version >= 1) {
- readF1000(is); // deprecated heat
- readF1000(is); // deprecated humidity
- }
- }
- catch(SerializationError &e)
- {
- warningstream<<"MapBlock::deSerializeNetworkSpecific(): Ignoring an error"
- <<": "<<e.what()<<std::endl;
- }
- }
- /*
- Legacy serialization
- */
- void MapBlock::deSerialize_pre22(std::istream &is, u8 version, bool disk)
- {
- // Initialize default flags
- is_underground = false;
- m_day_night_differs = false;
- m_lighting_complete = 0xFFFF;
- m_generated = true;
- // Make a temporary buffer
- u32 ser_length = MapNode::serializedLength(version);
- SharedBuffer<u8> databuf_nodelist(nodecount * ser_length);
- // These have no compression
- if (version <= 3 || version == 5 || version == 6) {
- char tmp;
- is.read(&tmp, 1);
- if (is.gcount() != 1)
- throw SerializationError(std::string(FUNCTION_NAME)
- + ": not enough input data");
- is_underground = tmp;
- is.read((char *)*databuf_nodelist, nodecount * ser_length);
- if ((u32)is.gcount() != nodecount * ser_length)
- throw SerializationError(std::string(FUNCTION_NAME)
- + ": not enough input data");
- } else if (version <= 10) {
- u8 t8;
- is.read((char *)&t8, 1);
- is_underground = t8;
- {
- // Uncompress and set material data
- std::ostringstream os(std::ios_base::binary);
- decompress(is, os, version);
- std::string s = os.str();
- if (s.size() != nodecount)
- throw SerializationError(std::string(FUNCTION_NAME)
- + ": not enough input data");
- for (u32 i = 0; i < s.size(); i++) {
- databuf_nodelist[i*ser_length] = s[i];
- }
- }
- {
- // Uncompress and set param data
- std::ostringstream os(std::ios_base::binary);
- decompress(is, os, version);
- std::string s = os.str();
- if (s.size() != nodecount)
- throw SerializationError(std::string(FUNCTION_NAME)
- + ": not enough input data");
- for (u32 i = 0; i < s.size(); i++) {
- databuf_nodelist[i*ser_length + 1] = s[i];
- }
- }
- if (version >= 10) {
- // Uncompress and set param2 data
- std::ostringstream os(std::ios_base::binary);
- decompress(is, os, version);
- std::string s = os.str();
- if (s.size() != nodecount)
- throw SerializationError(std::string(FUNCTION_NAME)
- + ": not enough input data");
- for (u32 i = 0; i < s.size(); i++) {
- databuf_nodelist[i*ser_length + 2] = s[i];
- }
- }
- } else { // All other versions (10 to 21)
- u8 flags;
- is.read((char*)&flags, 1);
- is_underground = (flags & 0x01) != 0;
- m_day_night_differs = (flags & 0x02) != 0;
- if(version >= 18)
- m_generated = (flags & 0x08) == 0;
- // Uncompress data
- std::ostringstream os(std::ios_base::binary);
- decompress(is, os, version);
- std::string s = os.str();
- if (s.size() != nodecount * 3)
- throw SerializationError(std::string(FUNCTION_NAME)
- + ": decompress resulted in size other than nodecount*3");
- // deserialize nodes from buffer
- for (u32 i = 0; i < nodecount; i++) {
- databuf_nodelist[i*ser_length] = s[i];
- databuf_nodelist[i*ser_length + 1] = s[i+nodecount];
- databuf_nodelist[i*ser_length + 2] = s[i+nodecount*2];
- }
- /*
- NodeMetadata
- */
- if (version >= 14) {
- // Ignore errors
- try {
- if (version <= 15) {
- std::string data = deSerializeString(is);
- std::istringstream iss(data, std::ios_base::binary);
- content_nodemeta_deserialize_legacy(iss,
- &m_node_metadata, &m_node_timers,
- m_gamedef->idef());
- } else {
- //std::string data = deSerializeLongString(is);
- std::ostringstream oss(std::ios_base::binary);
- decompressZlib(is, oss);
- std::istringstream iss(oss.str(), std::ios_base::binary);
- content_nodemeta_deserialize_legacy(iss,
- &m_node_metadata, &m_node_timers,
- m_gamedef->idef());
- }
- } catch(SerializationError &e) {
- warningstream<<"MapBlock::deSerialize(): Ignoring an error"
- <<" while deserializing node metadata"<<std::endl;
- }
- }
- }
- // Deserialize node data
- for (u32 i = 0; i < nodecount; i++) {
- data[i].deSerialize(&databuf_nodelist[i * ser_length], version);
- }
- if (disk) {
- /*
- Versions up from 9 have block objects. (DEPRECATED)
- */
- if (version >= 9) {
- u16 count = readU16(is);
- // Not supported and length not known if count is not 0
- if(count != 0){
- warningstream<<"MapBlock::deSerialize_pre22(): "
- <<"Ignoring stuff coming at and after MBOs"<<std::endl;
- return;
- }
- }
- /*
- Versions up from 15 have static objects.
- */
- if (version >= 15)
- m_static_objects.deSerialize(is);
- // Timestamp
- if (version >= 17) {
- setTimestamp(readU32(is));
- m_disk_timestamp = m_timestamp;
- } else {
- setTimestamp(BLOCK_TIMESTAMP_UNDEFINED);
- }
- // Dynamically re-set ids based on node names
- NameIdMapping nimap;
- // If supported, read node definition id mapping
- if (version >= 21) {
- nimap.deSerialize(is);
- // Else set the legacy mapping
- } else {
- content_mapnode_get_name_id_mapping(&nimap);
- }
- correctBlockNodeIds(&nimap, data, m_gamedef);
- }
- // Legacy data changes
- // This code has to convert from pre-22 to post-22 format.
- INodeDefManager *nodedef = m_gamedef->ndef();
- for(u32 i=0; i<nodecount; i++)
- {
- const ContentFeatures &f = nodedef->get(data[i].getContent());
- // Mineral
- if(nodedef->getId("default:stone") == data[i].getContent()
- && data[i].getParam1() == 1)
- {
- data[i].setContent(nodedef->getId("default:stone_with_coal"));
- data[i].setParam1(0);
- }
- else if(nodedef->getId("default:stone") == data[i].getContent()
- && data[i].getParam1() == 2)
- {
- data[i].setContent(nodedef->getId("default:stone_with_iron"));
- data[i].setParam1(0);
- }
- // facedir_simple
- if(f.legacy_facedir_simple)
- {
- data[i].setParam2(data[i].getParam1());
- data[i].setParam1(0);
- }
- // wall_mounted
- if(f.legacy_wallmounted)
- {
- u8 wallmounted_new_to_old[8] = {0x04, 0x08, 0x01, 0x02, 0x10, 0x20, 0, 0};
- u8 dir_old_format = data[i].getParam2();
- u8 dir_new_format = 0;
- for(u8 j=0; j<8; j++)
- {
- if((dir_old_format & wallmounted_new_to_old[j]) != 0)
- {
- dir_new_format = j;
- break;
- }
- }
- data[i].setParam2(dir_new_format);
- }
- }
- }
- /*
- Get a quick string to describe what a block actually contains
- */
- std::string analyze_block(MapBlock *block)
- {
- if(block == NULL)
- return "NULL";
- std::ostringstream desc;
- v3s16 p = block->getPos();
- char spos[25];
- snprintf(spos, sizeof(spos), "(%2d,%2d,%2d), ", p.X, p.Y, p.Z);
- desc<<spos;
- switch(block->getModified())
- {
- case MOD_STATE_CLEAN:
- desc<<"CLEAN, ";
- break;
- case MOD_STATE_WRITE_AT_UNLOAD:
- desc<<"WRITE_AT_UNLOAD, ";
- break;
- case MOD_STATE_WRITE_NEEDED:
- desc<<"WRITE_NEEDED, ";
- break;
- default:
- desc<<"unknown getModified()="+itos(block->getModified())+", ";
- }
- if(block->isGenerated())
- desc<<"is_gen [X], ";
- else
- desc<<"is_gen [ ], ";
- if(block->getIsUnderground())
- desc<<"is_ug [X], ";
- else
- desc<<"is_ug [ ], ";
- desc<<"lighting_complete: "<<block->getLightingComplete()<<", ";
- if(block->isDummy())
- {
- desc<<"Dummy, ";
- }
- else
- {
- bool full_ignore = true;
- bool some_ignore = false;
- bool full_air = true;
- bool some_air = false;
- for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
- for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
- for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
- {
- v3s16 p(x0,y0,z0);
- MapNode n = block->getNodeNoEx(p);
- content_t c = n.getContent();
- if(c == CONTENT_IGNORE)
- some_ignore = true;
- else
- full_ignore = false;
- if(c == CONTENT_AIR)
- some_air = true;
- else
- full_air = false;
- }
- desc<<"content {";
- std::ostringstream ss;
- if(full_ignore)
- ss<<"IGNORE (full), ";
- else if(some_ignore)
- ss<<"IGNORE, ";
- if(full_air)
- ss<<"AIR (full), ";
- else if(some_air)
- ss<<"AIR, ";
- if(ss.str().size()>=2)
- desc<<ss.str().substr(0, ss.str().size()-2);
- desc<<"}, ";
- }
- return desc.str().substr(0, desc.str().size()-2);
- }
- //END
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