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- /*
- Minetest
- Copyright (C) 2010-2013 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 "map.h"
- #include "mapsector.h"
- #include "mapblock.h"
- #include "filesys.h"
- #include "voxel.h"
- #include "voxelalgorithms.h"
- #include "porting.h"
- #include "serialization.h"
- #include "nodemetadata.h"
- #include "settings.h"
- #include "log.h"
- #include "profiler.h"
- #include "nodedef.h"
- #include "gamedef.h"
- #include "util/directiontables.h"
- #include "util/basic_macros.h"
- #include "rollback_interface.h"
- #include "environment.h"
- #include "reflowscan.h"
- #include "emerge.h"
- #include "mapgen/mapgen_v6.h"
- #include "mapgen/mg_biome.h"
- #include "config.h"
- #include "server.h"
- #include "database/database.h"
- #include "database/database-dummy.h"
- #include "database/database-sqlite3.h"
- #include "script/scripting_server.h"
- #include <deque>
- #include <queue>
- #if USE_LEVELDB
- #include "database/database-leveldb.h"
- #endif
- #if USE_REDIS
- #include "database/database-redis.h"
- #endif
- #if USE_POSTGRESQL
- #include "database/database-postgresql.h"
- #endif
- /*
- Map
- */
- Map::Map(IGameDef *gamedef):
- m_gamedef(gamedef),
- m_nodedef(gamedef->ndef())
- {
- }
- Map::~Map()
- {
- /*
- Free all MapSectors
- */
- for (auto §or : m_sectors) {
- delete sector.second;
- }
- }
- void Map::addEventReceiver(MapEventReceiver *event_receiver)
- {
- m_event_receivers.insert(event_receiver);
- }
- void Map::removeEventReceiver(MapEventReceiver *event_receiver)
- {
- m_event_receivers.erase(event_receiver);
- }
- void Map::dispatchEvent(const MapEditEvent &event)
- {
- for (MapEventReceiver *event_receiver : m_event_receivers) {
- event_receiver->onMapEditEvent(event);
- }
- }
- MapSector * Map::getSectorNoGenerateNoLock(v2s16 p)
- {
- if(m_sector_cache != NULL && p == m_sector_cache_p){
- MapSector * sector = m_sector_cache;
- return sector;
- }
- std::map<v2s16, MapSector*>::iterator n = m_sectors.find(p);
- if (n == m_sectors.end())
- return NULL;
- MapSector *sector = n->second;
- // Cache the last result
- m_sector_cache_p = p;
- m_sector_cache = sector;
- return sector;
- }
- MapSector * Map::getSectorNoGenerate(v2s16 p)
- {
- return getSectorNoGenerateNoLock(p);
- }
- MapBlock * Map::getBlockNoCreateNoEx(v3s16 p3d)
- {
- v2s16 p2d(p3d.X, p3d.Z);
- MapSector * sector = getSectorNoGenerate(p2d);
- if(sector == NULL)
- return NULL;
- MapBlock *block = sector->getBlockNoCreateNoEx(p3d.Y);
- return block;
- }
- MapBlock * Map::getBlockNoCreate(v3s16 p3d)
- {
- MapBlock *block = getBlockNoCreateNoEx(p3d);
- if(block == NULL)
- throw InvalidPositionException();
- return block;
- }
- bool Map::isNodeUnderground(v3s16 p)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- return block && block->getIsUnderground();
- }
- bool Map::isValidPosition(v3s16 p)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- return (block != NULL);
- }
- // Returns a CONTENT_IGNORE node if not found
- MapNode Map::getNode(v3s16 p, bool *is_valid_position)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if (block == NULL) {
- if (is_valid_position != NULL)
- *is_valid_position = false;
- return {CONTENT_IGNORE};
- }
- v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
- bool is_valid_p;
- MapNode node = block->getNodeNoCheck(relpos, &is_valid_p);
- if (is_valid_position != NULL)
- *is_valid_position = is_valid_p;
- return node;
- }
- // throws InvalidPositionException if not found
- void Map::setNode(v3s16 p, MapNode & n)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- MapBlock *block = getBlockNoCreate(blockpos);
- v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
- // Never allow placing CONTENT_IGNORE, it causes problems
- if(n.getContent() == CONTENT_IGNORE){
- bool temp_bool;
- errorstream<<"Map::setNode(): Not allowing to place CONTENT_IGNORE"
- <<" while trying to replace \""
- <<m_nodedef->get(block->getNodeNoCheck(relpos, &temp_bool)).name
- <<"\" at "<<PP(p)<<" (block "<<PP(blockpos)<<")"<<std::endl;
- return;
- }
- block->setNodeNoCheck(relpos, n);
- }
- void Map::addNodeAndUpdate(v3s16 p, MapNode n,
- std::map<v3s16, MapBlock*> &modified_blocks,
- bool remove_metadata)
- {
- // Collect old node for rollback
- RollbackNode rollback_oldnode(this, p, m_gamedef);
- // This is needed for updating the lighting
- MapNode oldnode = getNode(p);
- // Remove node metadata
- if (remove_metadata) {
- removeNodeMetadata(p);
- }
- // Set the node on the map
- // Ignore light (because calling voxalgo::update_lighting_nodes)
- n.setLight(LIGHTBANK_DAY, 0, m_nodedef);
- n.setLight(LIGHTBANK_NIGHT, 0, m_nodedef);
- setNode(p, n);
- // Update lighting
- std::vector<std::pair<v3s16, MapNode> > oldnodes;
- oldnodes.emplace_back(p, oldnode);
- voxalgo::update_lighting_nodes(this, oldnodes, modified_blocks);
- for (auto &modified_block : modified_blocks) {
- modified_block.second->expireDayNightDiff();
- }
- // Report for rollback
- if(m_gamedef->rollback())
- {
- RollbackNode rollback_newnode(this, p, m_gamedef);
- RollbackAction action;
- action.setSetNode(p, rollback_oldnode, rollback_newnode);
- m_gamedef->rollback()->reportAction(action);
- }
- /*
- Add neighboring liquid nodes and this node to transform queue.
- (it's vital for the node itself to get updated last, if it was removed.)
- */
- for (const v3s16 &dir : g_7dirs) {
- v3s16 p2 = p + dir;
- bool is_valid_position;
- MapNode n2 = getNode(p2, &is_valid_position);
- if(is_valid_position &&
- (m_nodedef->get(n2).isLiquid() ||
- n2.getContent() == CONTENT_AIR))
- m_transforming_liquid.push_back(p2);
- }
- }
- void Map::removeNodeAndUpdate(v3s16 p,
- std::map<v3s16, MapBlock*> &modified_blocks)
- {
- addNodeAndUpdate(p, MapNode(CONTENT_AIR), modified_blocks, true);
- }
- bool Map::addNodeWithEvent(v3s16 p, MapNode n, bool remove_metadata)
- {
- MapEditEvent event;
- event.type = remove_metadata ? MEET_ADDNODE : MEET_SWAPNODE;
- event.p = p;
- event.n = n;
- bool succeeded = true;
- try{
- std::map<v3s16, MapBlock*> modified_blocks;
- addNodeAndUpdate(p, n, modified_blocks, remove_metadata);
- // Copy modified_blocks to event
- for (auto &modified_block : modified_blocks) {
- event.modified_blocks.insert(modified_block.first);
- }
- }
- catch(InvalidPositionException &e){
- succeeded = false;
- }
- dispatchEvent(event);
- return succeeded;
- }
- bool Map::removeNodeWithEvent(v3s16 p)
- {
- MapEditEvent event;
- event.type = MEET_REMOVENODE;
- event.p = p;
- bool succeeded = true;
- try{
- std::map<v3s16, MapBlock*> modified_blocks;
- removeNodeAndUpdate(p, modified_blocks);
- // Copy modified_blocks to event
- for (auto &modified_block : modified_blocks) {
- event.modified_blocks.insert(modified_block.first);
- }
- }
- catch(InvalidPositionException &e){
- succeeded = false;
- }
- dispatchEvent(event);
- return succeeded;
- }
- struct TimeOrderedMapBlock {
- MapSector *sect;
- MapBlock *block;
- TimeOrderedMapBlock(MapSector *sect, MapBlock *block) :
- sect(sect),
- block(block)
- {}
- bool operator<(const TimeOrderedMapBlock &b) const
- {
- return block->getUsageTimer() < b.block->getUsageTimer();
- };
- };
- /*
- Updates usage timers
- */
- void Map::timerUpdate(float dtime, float unload_timeout, u32 max_loaded_blocks,
- std::vector<v3s16> *unloaded_blocks)
- {
- bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
- // Profile modified reasons
- Profiler modprofiler;
- std::vector<v2s16> sector_deletion_queue;
- u32 deleted_blocks_count = 0;
- u32 saved_blocks_count = 0;
- u32 block_count_all = 0;
- beginSave();
- // If there is no practical limit, we spare creation of mapblock_queue
- if (max_loaded_blocks == U32_MAX) {
- for (auto §or_it : m_sectors) {
- MapSector *sector = sector_it.second;
- bool all_blocks_deleted = true;
- MapBlockVect blocks;
- sector->getBlocks(blocks);
- for (MapBlock *block : blocks) {
- block->incrementUsageTimer(dtime);
- if (block->refGet() == 0
- && block->getUsageTimer() > unload_timeout) {
- v3s16 p = block->getPos();
- // Save if modified
- if (block->getModified() != MOD_STATE_CLEAN
- && save_before_unloading) {
- modprofiler.add(block->getModifiedReasonString(), 1);
- if (!saveBlock(block))
- continue;
- saved_blocks_count++;
- }
- // Delete from memory
- sector->deleteBlock(block);
- if (unloaded_blocks)
- unloaded_blocks->push_back(p);
- deleted_blocks_count++;
- } else {
- all_blocks_deleted = false;
- block_count_all++;
- }
- }
- if (all_blocks_deleted) {
- sector_deletion_queue.push_back(sector_it.first);
- }
- }
- } else {
- std::priority_queue<TimeOrderedMapBlock> mapblock_queue;
- for (auto §or_it : m_sectors) {
- MapSector *sector = sector_it.second;
- MapBlockVect blocks;
- sector->getBlocks(blocks);
- for (MapBlock *block : blocks) {
- block->incrementUsageTimer(dtime);
- mapblock_queue.push(TimeOrderedMapBlock(sector, block));
- }
- }
- block_count_all = mapblock_queue.size();
- // Delete old blocks, and blocks over the limit from the memory
- while (!mapblock_queue.empty() && (mapblock_queue.size() > max_loaded_blocks
- || mapblock_queue.top().block->getUsageTimer() > unload_timeout)) {
- TimeOrderedMapBlock b = mapblock_queue.top();
- mapblock_queue.pop();
- MapBlock *block = b.block;
- if (block->refGet() != 0)
- continue;
- v3s16 p = block->getPos();
- // Save if modified
- if (block->getModified() != MOD_STATE_CLEAN && save_before_unloading) {
- modprofiler.add(block->getModifiedReasonString(), 1);
- if (!saveBlock(block))
- continue;
- saved_blocks_count++;
- }
- // Delete from memory
- b.sect->deleteBlock(block);
- if (unloaded_blocks)
- unloaded_blocks->push_back(p);
- deleted_blocks_count++;
- block_count_all--;
- }
- // Delete empty sectors
- for (auto §or_it : m_sectors) {
- if (sector_it.second->empty()) {
- sector_deletion_queue.push_back(sector_it.first);
- }
- }
- }
- endSave();
- // Finally delete the empty sectors
- deleteSectors(sector_deletion_queue);
- if(deleted_blocks_count != 0)
- {
- PrintInfo(infostream); // ServerMap/ClientMap:
- infostream<<"Unloaded "<<deleted_blocks_count
- <<" blocks from memory";
- if(save_before_unloading)
- infostream<<", of which "<<saved_blocks_count<<" were written";
- infostream<<", "<<block_count_all<<" blocks in memory";
- infostream<<"."<<std::endl;
- if(saved_blocks_count != 0){
- PrintInfo(infostream); // ServerMap/ClientMap:
- infostream<<"Blocks modified by: "<<std::endl;
- modprofiler.print(infostream);
- }
- }
- }
- void Map::unloadUnreferencedBlocks(std::vector<v3s16> *unloaded_blocks)
- {
- timerUpdate(0.0, -1.0, 0, unloaded_blocks);
- }
- void Map::deleteSectors(std::vector<v2s16> §orList)
- {
- for (v2s16 j : sectorList) {
- MapSector *sector = m_sectors[j];
- // If sector is in sector cache, remove it from there
- if(m_sector_cache == sector)
- m_sector_cache = NULL;
- // Remove from map and delete
- m_sectors.erase(j);
- delete sector;
- }
- }
- void Map::PrintInfo(std::ostream &out)
- {
- out<<"Map: ";
- }
- #define WATER_DROP_BOOST 4
- const static v3s16 liquid_6dirs[6] = {
- // order: upper before same level before lower
- v3s16( 0, 1, 0),
- v3s16( 0, 0, 1),
- v3s16( 1, 0, 0),
- v3s16( 0, 0,-1),
- v3s16(-1, 0, 0),
- v3s16( 0,-1, 0)
- };
- enum NeighborType : u8 {
- NEIGHBOR_UPPER,
- NEIGHBOR_SAME_LEVEL,
- NEIGHBOR_LOWER
- };
- struct NodeNeighbor {
- MapNode n;
- NeighborType t;
- v3s16 p;
- NodeNeighbor()
- : n(CONTENT_AIR), t(NEIGHBOR_SAME_LEVEL)
- { }
- NodeNeighbor(const MapNode &node, NeighborType n_type, const v3s16 &pos)
- : n(node),
- t(n_type),
- p(pos)
- { }
- };
- void Map::transforming_liquid_add(v3s16 p) {
- m_transforming_liquid.push_back(p);
- }
- void Map::transformLiquids(std::map<v3s16, MapBlock*> &modified_blocks,
- ServerEnvironment *env)
- {
- u32 loopcount = 0;
- u32 initial_size = m_transforming_liquid.size();
- /*if(initial_size != 0)
- infostream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
- // list of nodes that due to viscosity have not reached their max level height
- std::deque<v3s16> must_reflow;
- std::vector<std::pair<v3s16, MapNode> > changed_nodes;
- u32 liquid_loop_max = g_settings->getS32("liquid_loop_max");
- u32 loop_max = liquid_loop_max;
- while (m_transforming_liquid.size() != 0)
- {
- // This should be done here so that it is done when continue is used
- if (loopcount >= initial_size || loopcount >= loop_max)
- break;
- loopcount++;
- /*
- Get a queued transforming liquid node
- */
- v3s16 p0 = m_transforming_liquid.front();
- m_transforming_liquid.pop_front();
- MapNode n0 = getNode(p0);
- /*
- Collect information about current node
- */
- s8 liquid_level = -1;
- // The liquid node which will be placed there if
- // the liquid flows into this node.
- content_t liquid_kind = CONTENT_IGNORE;
- // The node which will be placed there if liquid
- // can't flow into this node.
- content_t floodable_node = CONTENT_AIR;
- const ContentFeatures &cf = m_nodedef->get(n0);
- LiquidType liquid_type = cf.liquid_type;
- switch (liquid_type) {
- case LIQUID_SOURCE:
- liquid_level = LIQUID_LEVEL_SOURCE;
- liquid_kind = cf.liquid_alternative_flowing_id;
- break;
- case LIQUID_FLOWING:
- liquid_level = (n0.param2 & LIQUID_LEVEL_MASK);
- liquid_kind = n0.getContent();
- break;
- case LIQUID_NONE:
- // if this node is 'floodable', it *could* be transformed
- // into a liquid, otherwise, continue with the next node.
- if (!cf.floodable)
- continue;
- floodable_node = n0.getContent();
- liquid_kind = CONTENT_AIR;
- break;
- }
- /*
- Collect information about the environment
- */
- NodeNeighbor sources[6]; // surrounding sources
- int num_sources = 0;
- NodeNeighbor flows[6]; // surrounding flowing liquid nodes
- int num_flows = 0;
- NodeNeighbor airs[6]; // surrounding air
- int num_airs = 0;
- NodeNeighbor neutrals[6]; // nodes that are solid or another kind of liquid
- int num_neutrals = 0;
- bool flowing_down = false;
- bool ignored_sources = false;
- for (u16 i = 0; i < 6; i++) {
- NeighborType nt = NEIGHBOR_SAME_LEVEL;
- switch (i) {
- case 0:
- nt = NEIGHBOR_UPPER;
- break;
- case 5:
- nt = NEIGHBOR_LOWER;
- break;
- default:
- break;
- }
- v3s16 npos = p0 + liquid_6dirs[i];
- NodeNeighbor nb(getNode(npos), nt, npos);
- const ContentFeatures &cfnb = m_nodedef->get(nb.n);
- switch (m_nodedef->get(nb.n.getContent()).liquid_type) {
- case LIQUID_NONE:
- if (cfnb.floodable) {
- airs[num_airs++] = nb;
- // if the current node is a water source the neighbor
- // should be enqueded for transformation regardless of whether the
- // current node changes or not.
- if (nb.t != NEIGHBOR_UPPER && liquid_type != LIQUID_NONE)
- m_transforming_liquid.push_back(npos);
- // if the current node happens to be a flowing node, it will start to flow down here.
- if (nb.t == NEIGHBOR_LOWER)
- flowing_down = true;
- } else {
- neutrals[num_neutrals++] = nb;
- if (nb.n.getContent() == CONTENT_IGNORE) {
- // If node below is ignore prevent water from
- // spreading outwards and otherwise prevent from
- // flowing away as ignore node might be the source
- if (nb.t == NEIGHBOR_LOWER)
- flowing_down = true;
- else
- ignored_sources = true;
- }
- }
- break;
- case LIQUID_SOURCE:
- // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
- if (liquid_kind == CONTENT_AIR)
- liquid_kind = cfnb.liquid_alternative_flowing_id;
- if (cfnb.liquid_alternative_flowing_id != liquid_kind) {
- neutrals[num_neutrals++] = nb;
- } else {
- // Do not count bottom source, it will screw things up
- if(nt != NEIGHBOR_LOWER)
- sources[num_sources++] = nb;
- }
- break;
- case LIQUID_FLOWING:
- if (nb.t != NEIGHBOR_SAME_LEVEL ||
- (nb.n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK) {
- // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
- // but exclude falling liquids on the same level, they cannot flow here anyway
- if (liquid_kind == CONTENT_AIR)
- liquid_kind = cfnb.liquid_alternative_flowing_id;
- }
- if (cfnb.liquid_alternative_flowing_id != liquid_kind) {
- neutrals[num_neutrals++] = nb;
- } else {
- flows[num_flows++] = nb;
- if (nb.t == NEIGHBOR_LOWER)
- flowing_down = true;
- }
- break;
- }
- }
- /*
- decide on the type (and possibly level) of the current node
- */
- content_t new_node_content;
- s8 new_node_level = -1;
- s8 max_node_level = -1;
- u8 range = m_nodedef->get(liquid_kind).liquid_range;
- if (range > LIQUID_LEVEL_MAX + 1)
- range = LIQUID_LEVEL_MAX + 1;
- if ((num_sources >= 2 && m_nodedef->get(liquid_kind).liquid_renewable) || liquid_type == LIQUID_SOURCE) {
- // liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
- // or the flowing alternative of the first of the surrounding sources (if it's air), so
- // it's perfectly safe to use liquid_kind here to determine the new node content.
- new_node_content = m_nodedef->get(liquid_kind).liquid_alternative_source_id;
- } else if (num_sources >= 1 && sources[0].t != NEIGHBOR_LOWER) {
- // liquid_kind is set properly, see above
- max_node_level = new_node_level = LIQUID_LEVEL_MAX;
- if (new_node_level >= (LIQUID_LEVEL_MAX + 1 - range))
- new_node_content = liquid_kind;
- else
- new_node_content = floodable_node;
- } else if (ignored_sources && liquid_level >= 0) {
- // Maybe there are neighbouring sources that aren't loaded yet
- // so prevent flowing away.
- new_node_level = liquid_level;
- new_node_content = liquid_kind;
- } else {
- // no surrounding sources, so get the maximum level that can flow into this node
- for (u16 i = 0; i < num_flows; i++) {
- u8 nb_liquid_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
- switch (flows[i].t) {
- case NEIGHBOR_UPPER:
- if (nb_liquid_level + WATER_DROP_BOOST > max_node_level) {
- max_node_level = LIQUID_LEVEL_MAX;
- if (nb_liquid_level + WATER_DROP_BOOST < LIQUID_LEVEL_MAX)
- max_node_level = nb_liquid_level + WATER_DROP_BOOST;
- } else if (nb_liquid_level > max_node_level) {
- max_node_level = nb_liquid_level;
- }
- break;
- case NEIGHBOR_LOWER:
- break;
- case NEIGHBOR_SAME_LEVEL:
- if ((flows[i].n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK &&
- nb_liquid_level > 0 && nb_liquid_level - 1 > max_node_level)
- max_node_level = nb_liquid_level - 1;
- break;
- }
- }
- u8 viscosity = m_nodedef->get(liquid_kind).liquid_viscosity;
- if (viscosity > 1 && max_node_level != liquid_level) {
- // amount to gain, limited by viscosity
- // must be at least 1 in absolute value
- s8 level_inc = max_node_level - liquid_level;
- if (level_inc < -viscosity || level_inc > viscosity)
- new_node_level = liquid_level + level_inc/viscosity;
- else if (level_inc < 0)
- new_node_level = liquid_level - 1;
- else if (level_inc > 0)
- new_node_level = liquid_level + 1;
- if (new_node_level != max_node_level)
- must_reflow.push_back(p0);
- } else {
- new_node_level = max_node_level;
- }
- if (max_node_level >= (LIQUID_LEVEL_MAX + 1 - range))
- new_node_content = liquid_kind;
- else
- new_node_content = floodable_node;
- }
- /*
- check if anything has changed. if not, just continue with the next node.
- */
- if (new_node_content == n0.getContent() &&
- (m_nodedef->get(n0.getContent()).liquid_type != LIQUID_FLOWING ||
- ((n0.param2 & LIQUID_LEVEL_MASK) == (u8)new_node_level &&
- ((n0.param2 & LIQUID_FLOW_DOWN_MASK) == LIQUID_FLOW_DOWN_MASK)
- == flowing_down)))
- continue;
- /*
- update the current node
- */
- MapNode n00 = n0;
- //bool flow_down_enabled = (flowing_down && ((n0.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK));
- if (m_nodedef->get(new_node_content).liquid_type == LIQUID_FLOWING) {
- // set level to last 3 bits, flowing down bit to 4th bit
- n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
- } else {
- // set the liquid level and flow bits to 0
- n0.param2 &= ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
- }
- // change the node.
- n0.setContent(new_node_content);
- // on_flood() the node
- if (floodable_node != CONTENT_AIR) {
- if (env->getScriptIface()->node_on_flood(p0, n00, n0))
- continue;
- }
- // Ignore light (because calling voxalgo::update_lighting_nodes)
- n0.setLight(LIGHTBANK_DAY, 0, m_nodedef);
- n0.setLight(LIGHTBANK_NIGHT, 0, m_nodedef);
- // Find out whether there is a suspect for this action
- std::string suspect;
- if (m_gamedef->rollback())
- suspect = m_gamedef->rollback()->getSuspect(p0, 83, 1);
- if (m_gamedef->rollback() && !suspect.empty()) {
- // Blame suspect
- RollbackScopeActor rollback_scope(m_gamedef->rollback(), suspect, true);
- // Get old node for rollback
- RollbackNode rollback_oldnode(this, p0, m_gamedef);
- // Set node
- setNode(p0, n0);
- // Report
- RollbackNode rollback_newnode(this, p0, m_gamedef);
- RollbackAction action;
- action.setSetNode(p0, rollback_oldnode, rollback_newnode);
- m_gamedef->rollback()->reportAction(action);
- } else {
- // Set node
- setNode(p0, n0);
- }
- v3s16 blockpos = getNodeBlockPos(p0);
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if (block != NULL) {
- modified_blocks[blockpos] = block;
- changed_nodes.emplace_back(p0, n00);
- }
- /*
- enqueue neighbors for update if neccessary
- */
- switch (m_nodedef->get(n0.getContent()).liquid_type) {
- case LIQUID_SOURCE:
- case LIQUID_FLOWING:
- // make sure source flows into all neighboring nodes
- for (u16 i = 0; i < num_flows; i++)
- if (flows[i].t != NEIGHBOR_UPPER)
- m_transforming_liquid.push_back(flows[i].p);
- for (u16 i = 0; i < num_airs; i++)
- if (airs[i].t != NEIGHBOR_UPPER)
- m_transforming_liquid.push_back(airs[i].p);
- break;
- case LIQUID_NONE:
- // this flow has turned to air; neighboring flows might need to do the same
- for (u16 i = 0; i < num_flows; i++)
- m_transforming_liquid.push_back(flows[i].p);
- break;
- }
- }
- //infostream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
- for (auto &iter : must_reflow)
- m_transforming_liquid.push_back(iter);
- voxalgo::update_lighting_nodes(this, changed_nodes, modified_blocks);
- env->getScriptIface()->on_liquid_transformed(changed_nodes);
- /* ----------------------------------------------------------------------
- * Manage the queue so that it does not grow indefinately
- */
- u16 time_until_purge = g_settings->getU16("liquid_queue_purge_time");
- if (time_until_purge == 0)
- return; // Feature disabled
- time_until_purge *= 1000; // seconds -> milliseconds
- u64 curr_time = porting::getTimeMs();
- u32 prev_unprocessed = m_unprocessed_count;
- m_unprocessed_count = m_transforming_liquid.size();
- // if unprocessed block count is decreasing or stable
- if (m_unprocessed_count <= prev_unprocessed) {
- m_queue_size_timer_started = false;
- } else {
- if (!m_queue_size_timer_started)
- m_inc_trending_up_start_time = curr_time;
- m_queue_size_timer_started = true;
- }
- // Account for curr_time overflowing
- if (m_queue_size_timer_started && m_inc_trending_up_start_time > curr_time)
- m_queue_size_timer_started = false;
- /* If the queue has been growing for more than liquid_queue_purge_time seconds
- * and the number of unprocessed blocks is still > liquid_loop_max then we
- * cannot keep up; dump the oldest blocks from the queue so that the queue
- * has liquid_loop_max items in it
- */
- if (m_queue_size_timer_started
- && curr_time - m_inc_trending_up_start_time > time_until_purge
- && m_unprocessed_count > liquid_loop_max) {
- size_t dump_qty = m_unprocessed_count - liquid_loop_max;
- infostream << "transformLiquids(): DUMPING " << dump_qty
- << " blocks from the queue" << std::endl;
- while (dump_qty--)
- m_transforming_liquid.pop_front();
- m_queue_size_timer_started = false; // optimistically assume we can keep up now
- m_unprocessed_count = m_transforming_liquid.size();
- }
- }
- std::vector<v3s16> Map::findNodesWithMetadata(v3s16 p1, v3s16 p2)
- {
- std::vector<v3s16> positions_with_meta;
- sortBoxVerticies(p1, p2);
- v3s16 bpmin = getNodeBlockPos(p1);
- v3s16 bpmax = getNodeBlockPos(p2);
- VoxelArea area(p1, p2);
- for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
- for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
- for (s16 x = bpmin.X; x <= bpmax.X; x++) {
- v3s16 blockpos(x, y, z);
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if (!block) {
- verbosestream << "Map::getNodeMetadata(): Need to emerge "
- << PP(blockpos) << std::endl;
- block = emergeBlock(blockpos, false);
- }
- if (!block) {
- infostream << "WARNING: Map::getNodeMetadata(): Block not found"
- << std::endl;
- continue;
- }
- v3s16 p_base = blockpos * MAP_BLOCKSIZE;
- std::vector<v3s16> keys = block->m_node_metadata.getAllKeys();
- for (size_t i = 0; i != keys.size(); i++) {
- v3s16 p(keys[i] + p_base);
- if (!area.contains(p))
- continue;
- positions_with_meta.push_back(p);
- }
- }
- return positions_with_meta;
- }
- NodeMetadata *Map::getNodeMetadata(v3s16 p)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if(!block){
- infostream<<"Map::getNodeMetadata(): Need to emerge "
- <<PP(blockpos)<<std::endl;
- block = emergeBlock(blockpos, false);
- }
- if(!block){
- warningstream<<"Map::getNodeMetadata(): Block not found"
- <<std::endl;
- return NULL;
- }
- NodeMetadata *meta = block->m_node_metadata.get(p_rel);
- return meta;
- }
- bool Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if(!block){
- infostream<<"Map::setNodeMetadata(): Need to emerge "
- <<PP(blockpos)<<std::endl;
- block = emergeBlock(blockpos, false);
- }
- if(!block){
- warningstream<<"Map::setNodeMetadata(): Block not found"
- <<std::endl;
- return false;
- }
- block->m_node_metadata.set(p_rel, meta);
- return true;
- }
- void Map::removeNodeMetadata(v3s16 p)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if(block == NULL)
- {
- warningstream<<"Map::removeNodeMetadata(): Block not found"
- <<std::endl;
- return;
- }
- block->m_node_metadata.remove(p_rel);
- }
- NodeTimer Map::getNodeTimer(v3s16 p)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if(!block){
- infostream<<"Map::getNodeTimer(): Need to emerge "
- <<PP(blockpos)<<std::endl;
- block = emergeBlock(blockpos, false);
- }
- if(!block){
- warningstream<<"Map::getNodeTimer(): Block not found"
- <<std::endl;
- return NodeTimer();
- }
- NodeTimer t = block->m_node_timers.get(p_rel);
- NodeTimer nt(t.timeout, t.elapsed, p);
- return nt;
- }
- void Map::setNodeTimer(const NodeTimer &t)
- {
- v3s16 p = t.position;
- v3s16 blockpos = getNodeBlockPos(p);
- v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if(!block){
- infostream<<"Map::setNodeTimer(): Need to emerge "
- <<PP(blockpos)<<std::endl;
- block = emergeBlock(blockpos, false);
- }
- if(!block){
- warningstream<<"Map::setNodeTimer(): Block not found"
- <<std::endl;
- return;
- }
- NodeTimer nt(t.timeout, t.elapsed, p_rel);
- block->m_node_timers.set(nt);
- }
- void Map::removeNodeTimer(v3s16 p)
- {
- v3s16 blockpos = getNodeBlockPos(p);
- v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if(block == NULL)
- {
- warningstream<<"Map::removeNodeTimer(): Block not found"
- <<std::endl;
- return;
- }
- block->m_node_timers.remove(p_rel);
- }
- bool Map::determineAdditionalOcclusionCheck(const v3s16 &pos_camera,
- const core::aabbox3d<s16> &block_bounds, v3s16 &check)
- {
- /*
- This functions determines the node inside the target block that is
- closest to the camera position. This increases the occlusion culling
- accuracy in straight and diagonal corridors.
- The returned position will be occlusion checked first in addition to the
- others (8 corners + center).
- No position is returned if
- - the closest node is a corner, corners are checked anyway.
- - the camera is inside the target block, it will never be occluded.
- */
- #define CLOSEST_EDGE(pos, bounds, axis) \
- ((pos).axis <= (bounds).MinEdge.axis) ? (bounds).MinEdge.axis : \
- (bounds).MaxEdge.axis
- bool x_inside = (block_bounds.MinEdge.X <= pos_camera.X) &&
- (pos_camera.X <= block_bounds.MaxEdge.X);
- bool y_inside = (block_bounds.MinEdge.Y <= pos_camera.Y) &&
- (pos_camera.Y <= block_bounds.MaxEdge.Y);
- bool z_inside = (block_bounds.MinEdge.Z <= pos_camera.Z) &&
- (pos_camera.Z <= block_bounds.MaxEdge.Z);
- if (x_inside && y_inside && z_inside)
- return false; // Camera inside target mapblock
- // straight
- if (x_inside && y_inside) {
- check = v3s16(pos_camera.X, pos_camera.Y, 0);
- check.Z = CLOSEST_EDGE(pos_camera, block_bounds, Z);
- return true;
- } else if (y_inside && z_inside) {
- check = v3s16(0, pos_camera.Y, pos_camera.Z);
- check.X = CLOSEST_EDGE(pos_camera, block_bounds, X);
- return true;
- } else if (x_inside && z_inside) {
- check = v3s16(pos_camera.X, 0, pos_camera.Z);
- check.Y = CLOSEST_EDGE(pos_camera, block_bounds, Y);
- return true;
- }
- // diagonal
- if (x_inside) {
- check = v3s16(pos_camera.X, 0, 0);
- check.Y = CLOSEST_EDGE(pos_camera, block_bounds, Y);
- check.Z = CLOSEST_EDGE(pos_camera, block_bounds, Z);
- return true;
- } else if (y_inside) {
- check = v3s16(0, pos_camera.Y, 0);
- check.X = CLOSEST_EDGE(pos_camera, block_bounds, X);
- check.Z = CLOSEST_EDGE(pos_camera, block_bounds, Z);
- return true;
- } else if (z_inside) {
- check = v3s16(0, 0, pos_camera.Z);
- check.X = CLOSEST_EDGE(pos_camera, block_bounds, X);
- check.Y = CLOSEST_EDGE(pos_camera, block_bounds, Y);
- return true;
- }
- // Closest node would be a corner, none returned
- return false;
- }
- bool Map::isOccluded(const v3s16 &pos_camera, const v3s16 &pos_target,
- float step, float stepfac, float offset, float end_offset, u32 needed_count)
- {
- v3f direction = intToFloat(pos_target - pos_camera, BS);
- float distance = direction.getLength();
- // Normalize direction vector
- if (distance > 0.0f)
- direction /= distance;
- v3f pos_origin_f = intToFloat(pos_camera, BS);
- u32 count = 0;
- bool is_valid_position;
- for (; offset < distance + end_offset; offset += step) {
- v3f pos_node_f = pos_origin_f + direction * offset;
- v3s16 pos_node = floatToInt(pos_node_f, BS);
- MapNode node = getNode(pos_node, &is_valid_position);
- if (is_valid_position &&
- !m_nodedef->get(node).light_propagates) {
- // Cannot see through light-blocking nodes --> occluded
- count++;
- if (count >= needed_count)
- return true;
- }
- step *= stepfac;
- }
- return false;
- }
- bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes)
- {
- // Check occlusion for center and all 8 corners of the mapblock
- // Overshoot a little for less flickering
- static const s16 bs2 = MAP_BLOCKSIZE / 2 + 1;
- static const v3s16 dir9[9] = {
- v3s16( 0, 0, 0),
- v3s16( 1, 1, 1) * bs2,
- v3s16( 1, 1, -1) * bs2,
- v3s16( 1, -1, 1) * bs2,
- v3s16( 1, -1, -1) * bs2,
- v3s16(-1, 1, 1) * bs2,
- v3s16(-1, 1, -1) * bs2,
- v3s16(-1, -1, 1) * bs2,
- v3s16(-1, -1, -1) * bs2,
- };
- v3s16 pos_blockcenter = block->getPosRelative() + (MAP_BLOCKSIZE / 2);
- // Starting step size, value between 1m and sqrt(3)m
- float step = BS * 1.2f;
- // Multiply step by each iteraction by 'stepfac' to reduce checks in distance
- float stepfac = 1.05f;
- float start_offset = BS * 1.0f;
- // The occlusion search of 'isOccluded()' must stop short of the target
- // point by distance 'end_offset' to not enter the target mapblock.
- // For the 8 mapblock corners 'end_offset' must therefore be the maximum
- // diagonal of a mapblock, because we must consider all view angles.
- // sqrt(1^2 + 1^2 + 1^2) = 1.732
- float end_offset = -BS * MAP_BLOCKSIZE * 1.732f;
- // to reduce the likelihood of falsely occluded blocks
- // require at least two solid blocks
- // this is a HACK, we should think of a more precise algorithm
- u32 needed_count = 2;
- // Additional occlusion check, see comments in that function
- v3s16 check;
- if (determineAdditionalOcclusionCheck(cam_pos_nodes, block->getBox(), check)) {
- // node is always on a side facing the camera, end_offset can be lower
- if (!isOccluded(cam_pos_nodes, check, step, stepfac, start_offset,
- -1.0f, needed_count))
- return false;
- }
- for (const v3s16 &dir : dir9) {
- if (!isOccluded(cam_pos_nodes, pos_blockcenter + dir, step, stepfac,
- start_offset, end_offset, needed_count))
- return false;
- }
- return true;
- }
- /*
- ServerMap
- */
- ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
- EmergeManager *emerge, MetricsBackend *mb):
- Map(gamedef),
- settings_mgr(savedir + DIR_DELIM + "map_meta.txt"),
- m_emerge(emerge)
- {
- verbosestream<<FUNCTION_NAME<<std::endl;
- // Tell the EmergeManager about our MapSettingsManager
- emerge->map_settings_mgr = &settings_mgr;
- /*
- Try to load map; if not found, create a new one.
- */
- // Determine which database backend to use
- std::string conf_path = savedir + DIR_DELIM + "world.mt";
- Settings conf;
- bool succeeded = conf.readConfigFile(conf_path.c_str());
- if (!succeeded || !conf.exists("backend")) {
- // fall back to sqlite3
- conf.set("backend", "sqlite3");
- }
- std::string backend = conf.get("backend");
- dbase = createDatabase(backend, savedir, conf);
- if (conf.exists("readonly_backend")) {
- std::string readonly_dir = savedir + DIR_DELIM + "readonly";
- dbase_ro = createDatabase(conf.get("readonly_backend"), readonly_dir, conf);
- }
- if (!conf.updateConfigFile(conf_path.c_str()))
- errorstream << "ServerMap::ServerMap(): Failed to update world.mt!" << std::endl;
- m_savedir = savedir;
- m_map_saving_enabled = false;
- m_save_time_counter = mb->addCounter("minetest_core_map_save_time", "Map save time (in nanoseconds)");
- m_map_compression_level = rangelim(g_settings->getS16("map_compression_level_disk"), -1, 9);
- try {
- // If directory exists, check contents and load if possible
- if (fs::PathExists(m_savedir)) {
- // If directory is empty, it is safe to save into it.
- if (fs::GetDirListing(m_savedir).empty()) {
- infostream<<"ServerMap: Empty save directory is valid."
- <<std::endl;
- m_map_saving_enabled = true;
- }
- else
- {
- if (settings_mgr.loadMapMeta()) {
- infostream << "ServerMap: Metadata loaded from "
- << savedir << std::endl;
- } else {
- infostream << "ServerMap: Metadata could not be loaded "
- "from " << savedir << ", assuming valid save "
- "directory." << std::endl;
- }
- m_map_saving_enabled = true;
- // Map loaded, not creating new one
- return;
- }
- }
- // If directory doesn't exist, it is safe to save to it
- else{
- m_map_saving_enabled = true;
- }
- }
- catch(std::exception &e)
- {
- warningstream<<"ServerMap: Failed to load map from "<<savedir
- <<", exception: "<<e.what()<<std::endl;
- infostream<<"Please remove the map or fix it."<<std::endl;
- warningstream<<"Map saving will be disabled."<<std::endl;
- }
- }
- ServerMap::~ServerMap()
- {
- verbosestream<<FUNCTION_NAME<<std::endl;
- try
- {
- if (m_map_saving_enabled) {
- // Save only changed parts
- save(MOD_STATE_WRITE_AT_UNLOAD);
- infostream << "ServerMap: Saved map to " << m_savedir << std::endl;
- } else {
- infostream << "ServerMap: Map not saved" << std::endl;
- }
- }
- catch(std::exception &e)
- {
- infostream<<"ServerMap: Failed to save map to "<<m_savedir
- <<", exception: "<<e.what()<<std::endl;
- }
- /*
- Close database if it was opened
- */
- delete dbase;
- delete dbase_ro;
- }
- MapgenParams *ServerMap::getMapgenParams()
- {
- // getMapgenParams() should only ever be called after Server is initialized
- assert(settings_mgr.mapgen_params != NULL);
- return settings_mgr.mapgen_params;
- }
- u64 ServerMap::getSeed()
- {
- return getMapgenParams()->seed;
- }
- bool ServerMap::blockpos_over_mapgen_limit(v3s16 p)
- {
- const s16 mapgen_limit_bp = rangelim(
- getMapgenParams()->mapgen_limit, 0, MAX_MAP_GENERATION_LIMIT) /
- MAP_BLOCKSIZE;
- return p.X < -mapgen_limit_bp ||
- p.X > mapgen_limit_bp ||
- p.Y < -mapgen_limit_bp ||
- p.Y > mapgen_limit_bp ||
- p.Z < -mapgen_limit_bp ||
- p.Z > mapgen_limit_bp;
- }
- bool ServerMap::initBlockMake(v3s16 blockpos, BlockMakeData *data)
- {
- s16 csize = getMapgenParams()->chunksize;
- v3s16 bpmin = EmergeManager::getContainingChunk(blockpos, csize);
- v3s16 bpmax = bpmin + v3s16(1, 1, 1) * (csize - 1);
- if (!m_chunks_in_progress.insert(bpmin).second)
- return false;
- bool enable_mapgen_debug_info = m_emerge->enable_mapgen_debug_info;
- EMERGE_DBG_OUT("initBlockMake(): " PP(bpmin) " - " PP(bpmax));
- v3s16 extra_borders(1, 1, 1);
- v3s16 full_bpmin = bpmin - extra_borders;
- v3s16 full_bpmax = bpmax + extra_borders;
- // Do nothing if not inside mapgen limits (+-1 because of neighbors)
- if (blockpos_over_mapgen_limit(full_bpmin) ||
- blockpos_over_mapgen_limit(full_bpmax))
- return false;
- data->seed = getSeed();
- data->blockpos_min = bpmin;
- data->blockpos_max = bpmax;
- data->nodedef = m_nodedef;
- /*
- Create the whole area of this and the neighboring blocks
- */
- for (s16 x = full_bpmin.X; x <= full_bpmax.X; x++)
- for (s16 z = full_bpmin.Z; z <= full_bpmax.Z; z++) {
- v2s16 sectorpos(x, z);
- // Sector metadata is loaded from disk if not already loaded.
- MapSector *sector = createSector(sectorpos);
- FATAL_ERROR_IF(sector == NULL, "createSector() failed");
- for (s16 y = full_bpmin.Y; y <= full_bpmax.Y; y++) {
- v3s16 p(x, y, z);
- MapBlock *block = emergeBlock(p, false);
- if (block == NULL) {
- block = createBlock(p);
- // Block gets sunlight if this is true.
- // Refer to the map generator heuristics.
- bool ug = m_emerge->isBlockUnderground(p);
- block->setIsUnderground(ug);
- }
- }
- }
- /*
- Now we have a big empty area.
- Make a ManualMapVoxelManipulator that contains this and the
- neighboring blocks
- */
- data->vmanip = new MMVManip(this);
- data->vmanip->initialEmerge(full_bpmin, full_bpmax);
- // Data is ready now.
- return true;
- }
- void ServerMap::finishBlockMake(BlockMakeData *data,
- std::map<v3s16, MapBlock*> *changed_blocks)
- {
- v3s16 bpmin = data->blockpos_min;
- v3s16 bpmax = data->blockpos_max;
- bool enable_mapgen_debug_info = m_emerge->enable_mapgen_debug_info;
- EMERGE_DBG_OUT("finishBlockMake(): " PP(bpmin) " - " PP(bpmax));
- /*
- Blit generated stuff to map
- NOTE: blitBackAll adds nearly everything to changed_blocks
- */
- data->vmanip->blitBackAll(changed_blocks);
- EMERGE_DBG_OUT("finishBlockMake: changed_blocks.size()="
- << changed_blocks->size());
- /*
- Copy transforming liquid information
- */
- while (data->transforming_liquid.size()) {
- m_transforming_liquid.push_back(data->transforming_liquid.front());
- data->transforming_liquid.pop_front();
- }
- for (auto &changed_block : *changed_blocks) {
- MapBlock *block = changed_block.second;
- if (!block)
- continue;
- /*
- Update day/night difference cache of the MapBlocks
- */
- block->expireDayNightDiff();
- /*
- Set block as modified
- */
- block->raiseModified(MOD_STATE_WRITE_NEEDED,
- MOD_REASON_EXPIRE_DAYNIGHTDIFF);
- }
- /*
- Set central blocks as generated
- */
- for (s16 x = bpmin.X; x <= bpmax.X; x++)
- for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
- for (s16 y = bpmin.Y; y <= bpmax.Y; y++) {
- MapBlock *block = getBlockNoCreateNoEx(v3s16(x, y, z));
- if (!block)
- continue;
- block->setGenerated(true);
- }
- /*
- Save changed parts of map
- NOTE: Will be saved later.
- */
- //save(MOD_STATE_WRITE_AT_UNLOAD);
- m_chunks_in_progress.erase(bpmin);
- }
- MapSector *ServerMap::createSector(v2s16 p2d)
- {
- /*
- Check if it exists already in memory
- */
- MapSector *sector = getSectorNoGenerate(p2d);
- if (sector)
- return sector;
- /*
- Do not create over max mapgen limit
- */
- const s16 max_limit_bp = MAX_MAP_GENERATION_LIMIT / MAP_BLOCKSIZE;
- if (p2d.X < -max_limit_bp ||
- p2d.X > max_limit_bp ||
- p2d.Y < -max_limit_bp ||
- p2d.Y > max_limit_bp)
- throw InvalidPositionException("createSector(): pos. over max mapgen limit");
- /*
- Generate blank sector
- */
- sector = new MapSector(this, p2d, m_gamedef);
- // Sector position on map in nodes
- //v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
- /*
- Insert to container
- */
- m_sectors[p2d] = sector;
- return sector;
- }
- MapBlock * ServerMap::createBlock(v3s16 p)
- {
- /*
- Do not create over max mapgen limit
- */
- if (blockpos_over_max_limit(p))
- throw InvalidPositionException("createBlock(): pos. over max mapgen limit");
- v2s16 p2d(p.X, p.Z);
- s16 block_y = p.Y;
- /*
- This will create or load a sector if not found in memory.
- If block exists on disk, it will be loaded.
- NOTE: On old save formats, this will be slow, as it generates
- lighting on blocks for them.
- */
- MapSector *sector;
- try {
- sector = createSector(p2d);
- } catch (InvalidPositionException &e) {
- infostream<<"createBlock: createSector() failed"<<std::endl;
- throw e;
- }
- /*
- Try to get a block from the sector
- */
- MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
- if (block) {
- if(block->isDummy())
- block->unDummify();
- return block;
- }
- // Create blank
- block = sector->createBlankBlock(block_y);
- return block;
- }
- MapBlock * ServerMap::emergeBlock(v3s16 p, bool create_blank)
- {
- {
- MapBlock *block = getBlockNoCreateNoEx(p);
- if (block && !block->isDummy())
- return block;
- }
- {
- MapBlock *block = loadBlock(p);
- if(block)
- return block;
- }
- if (create_blank) {
- MapSector *sector = createSector(v2s16(p.X, p.Z));
- MapBlock *block = sector->createBlankBlock(p.Y);
- return block;
- }
- return NULL;
- }
- MapBlock *ServerMap::getBlockOrEmerge(v3s16 p3d)
- {
- MapBlock *block = getBlockNoCreateNoEx(p3d);
- if (block == NULL)
- m_emerge->enqueueBlockEmerge(PEER_ID_INEXISTENT, p3d, false);
- return block;
- }
- bool ServerMap::isBlockInQueue(v3s16 pos)
- {
- return m_emerge && m_emerge->isBlockInQueue(pos);
- }
- // N.B. This requires no synchronization, since data will not be modified unless
- // the VoxelManipulator being updated belongs to the same thread.
- void ServerMap::updateVManip(v3s16 pos)
- {
- Mapgen *mg = m_emerge->getCurrentMapgen();
- if (!mg)
- return;
- MMVManip *vm = mg->vm;
- if (!vm)
- return;
- if (!vm->m_area.contains(pos))
- return;
- s32 idx = vm->m_area.index(pos);
- vm->m_data[idx] = getNode(pos);
- vm->m_flags[idx] &= ~VOXELFLAG_NO_DATA;
- vm->m_is_dirty = true;
- }
- void ServerMap::save(ModifiedState save_level)
- {
- if (!m_map_saving_enabled) {
- warningstream<<"Not saving map, saving disabled."<<std::endl;
- return;
- }
- u64 start_time = porting::getTimeNs();
- if(save_level == MOD_STATE_CLEAN)
- infostream<<"ServerMap: Saving whole map, this can take time."
- <<std::endl;
- if (m_map_metadata_changed || save_level == MOD_STATE_CLEAN) {
- if (settings_mgr.saveMapMeta())
- m_map_metadata_changed = false;
- }
- // Profile modified reasons
- Profiler modprofiler;
- u32 block_count = 0;
- u32 block_count_all = 0; // Number of blocks in memory
- // Don't do anything with sqlite unless something is really saved
- bool save_started = false;
- for (auto §or_it : m_sectors) {
- MapSector *sector = sector_it.second;
- MapBlockVect blocks;
- sector->getBlocks(blocks);
- for (MapBlock *block : blocks) {
- block_count_all++;
- if(block->getModified() >= (u32)save_level) {
- // Lazy beginSave()
- if(!save_started) {
- beginSave();
- save_started = true;
- }
- modprofiler.add(block->getModifiedReasonString(), 1);
- saveBlock(block);
- block_count++;
- }
- }
- }
- if(save_started)
- endSave();
- /*
- Only print if something happened or saved whole map
- */
- if(save_level == MOD_STATE_CLEAN
- || block_count != 0) {
- infostream << "ServerMap: Written: "
- << block_count << " blocks"
- << ", " << block_count_all << " blocks in memory."
- << std::endl;
- PrintInfo(infostream); // ServerMap/ClientMap:
- infostream<<"Blocks modified by: "<<std::endl;
- modprofiler.print(infostream);
- }
- auto end_time = porting::getTimeNs();
- m_save_time_counter->increment(end_time - start_time);
- }
- void ServerMap::listAllLoadableBlocks(std::vector<v3s16> &dst)
- {
- dbase->listAllLoadableBlocks(dst);
- if (dbase_ro)
- dbase_ro->listAllLoadableBlocks(dst);
- }
- void ServerMap::listAllLoadedBlocks(std::vector<v3s16> &dst)
- {
- for (auto §or_it : m_sectors) {
- MapSector *sector = sector_it.second;
- MapBlockVect blocks;
- sector->getBlocks(blocks);
- for (MapBlock *block : blocks) {
- v3s16 p = block->getPos();
- dst.push_back(p);
- }
- }
- }
- MapDatabase *ServerMap::createDatabase(
- const std::string &name,
- const std::string &savedir,
- Settings &conf)
- {
- if (name == "sqlite3")
- return new MapDatabaseSQLite3(savedir);
- if (name == "dummy")
- return new Database_Dummy();
- #if USE_LEVELDB
- if (name == "leveldb")
- return new Database_LevelDB(savedir);
- #endif
- #if USE_REDIS
- if (name == "redis")
- return new Database_Redis(conf);
- #endif
- #if USE_POSTGRESQL
- if (name == "postgresql") {
- std::string connect_string;
- conf.getNoEx("pgsql_connection", connect_string);
- return new MapDatabasePostgreSQL(connect_string);
- }
- #endif
- throw BaseException(std::string("Database backend ") + name + " not supported.");
- }
- void ServerMap::beginSave()
- {
- dbase->beginSave();
- }
- void ServerMap::endSave()
- {
- dbase->endSave();
- }
- bool ServerMap::saveBlock(MapBlock *block)
- {
- return saveBlock(block, dbase, m_map_compression_level);
- }
- bool ServerMap::saveBlock(MapBlock *block, MapDatabase *db, int compression_level)
- {
- v3s16 p3d = block->getPos();
- // Dummy blocks are not written
- if (block->isDummy()) {
- warningstream << "saveBlock: Not writing dummy block "
- << PP(p3d) << std::endl;
- return true;
- }
- // Format used for writing
- u8 version = SER_FMT_VER_HIGHEST_WRITE;
- /*
- [0] u8 serialization version
- [1] data
- */
- std::ostringstream o(std::ios_base::binary);
- o.write((char*) &version, 1);
- block->serialize(o, version, true, compression_level);
- bool ret = db->saveBlock(p3d, o.str());
- if (ret) {
- // We just wrote it to the disk so clear modified flag
- block->resetModified();
- }
- return ret;
- }
- void ServerMap::loadBlock(std::string *blob, v3s16 p3d, MapSector *sector, bool save_after_load)
- {
- try {
- std::istringstream is(*blob, std::ios_base::binary);
- u8 version = SER_FMT_VER_INVALID;
- is.read((char*)&version, 1);
- if(is.fail())
- throw SerializationError("ServerMap::loadBlock(): Failed"
- " to read MapBlock version");
- MapBlock *block = NULL;
- bool created_new = false;
- block = sector->getBlockNoCreateNoEx(p3d.Y);
- if(block == NULL)
- {
- block = sector->createBlankBlockNoInsert(p3d.Y);
- created_new = true;
- }
- // Read basic data
- block->deSerialize(is, version, true);
- // If it's a new block, insert it to the map
- if (created_new) {
- sector->insertBlock(block);
- ReflowScan scanner(this, m_emerge->ndef);
- scanner.scan(block, &m_transforming_liquid);
- }
- /*
- Save blocks loaded in old format in new format
- */
- //if(version < SER_FMT_VER_HIGHEST_READ || save_after_load)
- // Only save if asked to; no need to update version
- if(save_after_load)
- saveBlock(block);
- // We just loaded it from, so it's up-to-date.
- block->resetModified();
- }
- catch(SerializationError &e)
- {
- errorstream<<"Invalid block data in database"
- <<" ("<<p3d.X<<","<<p3d.Y<<","<<p3d.Z<<")"
- <<" (SerializationError): "<<e.what()<<std::endl;
- // TODO: Block should be marked as invalid in memory so that it is
- // not touched but the game can run
- if(g_settings->getBool("ignore_world_load_errors")){
- errorstream<<"Ignoring block load error. Duck and cover! "
- <<"(ignore_world_load_errors)"<<std::endl;
- } else {
- throw SerializationError("Invalid block data in database");
- }
- }
- }
- MapBlock* ServerMap::loadBlock(v3s16 blockpos)
- {
- bool created_new = (getBlockNoCreateNoEx(blockpos) == NULL);
- v2s16 p2d(blockpos.X, blockpos.Z);
- std::string ret;
- dbase->loadBlock(blockpos, &ret);
- if (!ret.empty()) {
- loadBlock(&ret, blockpos, createSector(p2d), false);
- } else if (dbase_ro) {
- dbase_ro->loadBlock(blockpos, &ret);
- if (!ret.empty()) {
- loadBlock(&ret, blockpos, createSector(p2d), false);
- }
- } else {
- return NULL;
- }
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if (created_new && (block != NULL)) {
- std::map<v3s16, MapBlock*> modified_blocks;
- // Fix lighting if necessary
- voxalgo::update_block_border_lighting(this, block, modified_blocks);
- if (!modified_blocks.empty()) {
- //Modified lighting, send event
- MapEditEvent event;
- event.type = MEET_OTHER;
- std::map<v3s16, MapBlock *>::iterator it;
- for (it = modified_blocks.begin();
- it != modified_blocks.end(); ++it)
- event.modified_blocks.insert(it->first);
- dispatchEvent(event);
- }
- }
- return block;
- }
- bool ServerMap::deleteBlock(v3s16 blockpos)
- {
- if (!dbase->deleteBlock(blockpos))
- return false;
- MapBlock *block = getBlockNoCreateNoEx(blockpos);
- if (block) {
- v2s16 p2d(blockpos.X, blockpos.Z);
- MapSector *sector = getSectorNoGenerate(p2d);
- if (!sector)
- return false;
- sector->deleteBlock(block);
- }
- return true;
- }
- void ServerMap::PrintInfo(std::ostream &out)
- {
- out<<"ServerMap: ";
- }
- bool ServerMap::repairBlockLight(v3s16 blockpos,
- std::map<v3s16, MapBlock *> *modified_blocks)
- {
- MapBlock *block = emergeBlock(blockpos, false);
- if (!block || !block->isGenerated())
- return false;
- voxalgo::repair_block_light(this, block, modified_blocks);
- return true;
- }
- MMVManip::MMVManip(Map *map):
- VoxelManipulator(),
- m_map(map)
- {
- }
- void MMVManip::initialEmerge(v3s16 blockpos_min, v3s16 blockpos_max,
- bool load_if_inexistent)
- {
- TimeTaker timer1("initialEmerge", &emerge_time);
- // Units of these are MapBlocks
- v3s16 p_min = blockpos_min;
- v3s16 p_max = blockpos_max;
- VoxelArea block_area_nodes
- (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
- u32 size_MB = block_area_nodes.getVolume()*4/1000000;
- if(size_MB >= 1)
- {
- infostream<<"initialEmerge: area: ";
- block_area_nodes.print(infostream);
- infostream<<" ("<<size_MB<<"MB)";
- infostream<<std::endl;
- }
- addArea(block_area_nodes);
- for(s32 z=p_min.Z; z<=p_max.Z; z++)
- for(s32 y=p_min.Y; y<=p_max.Y; y++)
- for(s32 x=p_min.X; x<=p_max.X; x++)
- {
- u8 flags = 0;
- MapBlock *block;
- v3s16 p(x,y,z);
- std::map<v3s16, u8>::iterator n;
- n = m_loaded_blocks.find(p);
- if(n != m_loaded_blocks.end())
- continue;
- bool block_data_inexistent = false;
- {
- TimeTaker timer2("emerge load", &emerge_load_time);
- block = m_map->getBlockNoCreateNoEx(p);
- if (!block || block->isDummy())
- block_data_inexistent = true;
- else
- block->copyTo(*this);
- }
- if(block_data_inexistent)
- {
- if (load_if_inexistent && !blockpos_over_max_limit(p)) {
- ServerMap *svrmap = (ServerMap *)m_map;
- block = svrmap->emergeBlock(p, false);
- if (block == NULL)
- block = svrmap->createBlock(p);
- block->copyTo(*this);
- } else {
- flags |= VMANIP_BLOCK_DATA_INEXIST;
- /*
- Mark area inexistent
- */
- VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
- // Fill with VOXELFLAG_NO_DATA
- for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
- for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
- {
- s32 i = m_area.index(a.MinEdge.X,y,z);
- memset(&m_flags[i], VOXELFLAG_NO_DATA, MAP_BLOCKSIZE);
- }
- }
- }
- /*else if (block->getNode(0, 0, 0).getContent() == CONTENT_IGNORE)
- {
- // Mark that block was loaded as blank
- flags |= VMANIP_BLOCK_CONTAINS_CIGNORE;
- }*/
- m_loaded_blocks[p] = flags;
- }
- m_is_dirty = false;
- }
- void MMVManip::blitBackAll(std::map<v3s16, MapBlock*> *modified_blocks,
- bool overwrite_generated)
- {
- if(m_area.getExtent() == v3s16(0,0,0))
- return;
- /*
- Copy data of all blocks
- */
- for (auto &loaded_block : m_loaded_blocks) {
- v3s16 p = loaded_block.first;
- MapBlock *block = m_map->getBlockNoCreateNoEx(p);
- bool existed = !(loaded_block.second & VMANIP_BLOCK_DATA_INEXIST);
- if (!existed || (block == NULL) ||
- (!overwrite_generated && block->isGenerated()))
- continue;
- block->copyFrom(*this);
- block->raiseModified(MOD_STATE_WRITE_NEEDED, MOD_REASON_VMANIP);
- if(modified_blocks)
- (*modified_blocks)[p] = block;
- }
- }
- //END
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