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minetest/src/map.cpp

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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(std::ostream &dout, IGameDef *gamedef):
m_dout(dout),
m_gamedef(gamedef),
m_nodedef(gamedef->ndef())
{
}
Map::~Map()
{
/*
Free all MapSectors
*/
for (auto &sector : 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(MapEditEvent *event)
{
for (MapEventReceiver *event_receiver : m_event_receivers) {
event_receiver->onMapEditEvent(event);
}
}
MapSector * Map::getSectorNoGenerateNoExNoLock(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::getSectorNoGenerateNoEx(v2s16 p)
{
return getSectorNoGenerateNoExNoLock(p);
}
MapSector * Map::getSectorNoGenerate(v2s16 p)
{
MapSector *sector = getSectorNoGenerateNoEx(p);
if(sector == NULL)
throw InvalidPositionException();
return sector;
}
MapBlock * Map::getBlockNoCreateNoEx(v3s16 p3d)
{
v2s16 p2d(p3d.X, p3d.Z);
MapSector * sector = getSectorNoGenerateNoEx(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);
try{
MapBlock * block = getBlockNoCreate(blockpos);
return block->getIsUnderground();
}
catch(InvalidPositionException &e)
{
return false;
}
}
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::getNodeNoEx(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;
}
#if 0
// Deprecated
// throws InvalidPositionException if not found
// TODO: Now this is deprecated, getNodeNoEx should be renamed
MapNode Map::getNode(v3s16 p)
{
v3s16 blockpos = getNodeBlockPos(p);
MapBlock *block = getBlockNoCreateNoEx(blockpos);
if (block == NULL)
throw InvalidPositionException();
v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
bool is_valid_position;
MapNode node = block->getNodeNoCheck(relpos, &is_valid_position);
if (!is_valid_position)
throw InvalidPositionException();
return node;
}
#endif
// 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 fucks up stuff
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 = getNodeNoEx(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 = getNodeNoEx(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 &sector_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 &sector_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 &sector_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> &sectorList)
{
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
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;
#if 0
/* If liquid_loop_max is not keeping up with the queue size increase
* loop_max up to a maximum of liquid_loop_max * dedicated_server_step.
*/
if (m_transforming_liquid.size() > loop_max * 2) {
// "Burst" mode
float server_step = g_settings->getFloat("dedicated_server_step");
if (m_transforming_liquid_loop_count_multiplier - 1.0 < server_step)
m_transforming_liquid_loop_count_multiplier *= 1.0 + server_step / 10;
} else {
m_transforming_liquid_loop_count_multiplier = 1.0;
}
loop_max *= m_transforming_liquid_loop_count_multiplier;
#endif
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 = getNodeNoEx(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 = m_nodedef->getId(cf.liquid_alternative_flowing);
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
*/
const v3s16 *dirs = g_6dirs;
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 1:
nt = NEIGHBOR_UPPER;
break;
case 4:
nt = NEIGHBOR_LOWER;
break;
default:
break;
}
v3s16 npos = p0 + dirs[i];
NodeNeighbor nb(getNodeNoEx(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 = m_nodedef->getId(cfnb.liquid_alternative_flowing);
if (m_nodedef->getId(cfnb.liquid_alternative_flowing) != liquid_kind) {
neutrals[num_neutrals++] = nb;
} else {
// Do not count bottom source, it will screw things up
if(dirs[i].Y != -1)
sources[num_sources++] = nb;
}
break;
case LIQUID_FLOWING:
// if this node is not (yet) of a liquid type, choose the first liquid type we encounter
if (liquid_kind == CONTENT_AIR)
liquid_kind = m_nodedef->getId(cfnb.liquid_alternative_flowing);
if (m_nodedef->getId(cfnb.liquid_alternative_flowing) != 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->getId(m_nodedef->get(liquid_kind).liquid_alternative_source);
} 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 bit 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);
/* ----------------------------------------------------------------------
* 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::isOccluded(v3s16 p0, v3s16 p1, float step, float stepfac,
float start_off, float end_off, u32 needed_count)
{
float d0 = (float)BS * p0.getDistanceFrom(p1);
v3s16 u0 = p1 - p0;
v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
uf.normalize();
v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
u32 count = 0;
for(float s=start_off; s<d0+end_off; s+=step){
v3f pf = p0f + uf * s;
v3s16 p = floatToInt(pf, BS);
MapNode n = getNodeNoEx(p);
const ContentFeatures &f = m_nodedef->get(n);
if(f.drawtype == NDT_NORMAL){
// not transparent, see ContentFeature::updateTextures
count++;
if(count >= needed_count)
return true;
}
step *= stepfac;
}
return false;
}
bool Map::isBlockOccluded(MapBlock *block, v3s16 cam_pos_nodes) {
v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
cpn += v3s16(MAP_BLOCKSIZE / 2, MAP_BLOCKSIZE / 2, MAP_BLOCKSIZE / 2);
float step = BS * 1;
float stepfac = 1.1;
float startoff = BS * 1;
// The occlusion search of 'isOccluded()' must stop short of the target
// point by distance 'endoff' (end offset) to not enter the target mapblock.
// For the 8 mapblock corners 'endoff' 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 endoff = -BS * MAP_BLOCKSIZE * 1.732050807569;
s16 bs2 = MAP_BLOCKSIZE / 2 + 1;
// 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;
return (
// For the central point of the mapblock 'endoff' can be halved
isOccluded(cam_pos_nodes, cpn,
step, stepfac, startoff, endoff / 2.0f, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(bs2,bs2,bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(bs2,bs2,-bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(bs2,-bs2,bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(bs2,-bs2,-bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,bs2,bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,bs2,-bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,-bs2,bs2),
step, stepfac, startoff, endoff, needed_count) &&
isOccluded(cam_pos_nodes, cpn + v3s16(-bs2,-bs2,-bs2),
step, stepfac, startoff, endoff, needed_count));
}
/*
ServerMap
*/
ServerMap::ServerMap(const std::string &savedir, IGameDef *gamedef,
EmergeManager *emerge):
Map(dout_server, gamedef),
settings_mgr(g_settings, 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.updateConfigFile(conf_path.c_str()))
errorstream << "ServerMap::ServerMap(): Failed to update world.mt!" << std::endl;
m_savedir = savedir;
m_map_saving_enabled = false;
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;
#if 0
/*
Free all MapChunks
*/
core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
for(; i.atEnd() == false; i++)
{
MapChunk *chunk = i.getNode()->getValue();
delete chunk;
}
#endif
}
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;
}
s16 ServerMap::getWaterLevel()
{
return getMapgenParams()->water_level;
}
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);
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->blockpos_requested = blockpos;
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);
// Note: we may need this again at some point.
#if 0
// Ensure none of the blocks to be generated were marked as
// containing CONTENT_IGNORE
for (s16 z = blockpos_min.Z; z <= blockpos_max.Z; z++) {
for (s16 y = blockpos_min.Y; y <= blockpos_max.Y; y++) {
for (s16 x = blockpos_min.X; x <= blockpos_max.X; x++) {
core::map<v3s16, u8>::Node *n;
n = data->vmanip->m_loaded_blocks.find(v3s16(x, y, z));
if (n == NULL)
continue;
u8 flags = n->getValue();
flags &= ~VMANIP_BLOCK_CONTAINS_CIGNORE;
n->setValue(flags);
}
}
}
#endif
// 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;
v3s16 extra_borders(1, 1, 1);
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);
}
MapSector *ServerMap::createSector(v2s16 p2d)
{
/*
Check if it exists already in memory
*/
MapSector *sector = getSectorNoGenerateNoEx(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;
}
#if 0
/*
This is a quick-hand function for calling makeBlock().
*/
MapBlock * ServerMap::generateBlock(
v3s16 p,
std::map<v3s16, MapBlock*> &modified_blocks
)
{
bool enable_mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
TimeTaker timer("generateBlock");
//MapBlock *block = original_dummy;
v2s16 p2d(p.X, p.Z);
v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
/*
Do not generate over-limit
*/
if(blockpos_over_limit(p))
{
infostream<<FUNCTION_NAME<<": Block position over limit"<<std::endl;
throw InvalidPositionException("generateBlock(): pos. over limit");
}
/*
Create block make data
*/
BlockMakeData data;
initBlockMake(&data, p);
/*
Generate block
*/
{
TimeTaker t("mapgen::make_block()");
mapgen->makeChunk(&data);
//mapgen::make_block(&data);
if(enable_mapgen_debug_info == false)
t.stop(true); // Hide output
}
/*
Blit data back on map, update lighting, add mobs and whatever this does
*/
finishBlockMake(&data, modified_blocks);
/*
Get central block
*/
MapBlock *block = getBlockNoCreateNoEx(p);
#if 0
/*
Check result
*/
if(block)
{
bool erroneus_content = 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->getNode(p);
if(n.getContent() == CONTENT_IGNORE)
{
infostream<<"CONTENT_IGNORE at "
<<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
<<std::endl;
erroneus_content = true;
assert(0);
}
}
if(erroneus_content)
{
assert(0);
}
}
#endif
#if 0
/*
Generate a completely empty block
*/
if(block)
{
for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
{
for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
{
MapNode n;
n.setContent(CONTENT_AIR);
block->setNode(v3s16(x0,y0,z0), n);
}
}
}
#endif
if(enable_mapgen_debug_info == false)
timer.stop(true); // Hide output
return block;
}
#endif
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;
}
// 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] = getNodeNoEx(pos);
vm->m_flags[idx] &= ~VOXELFLAG_NO_DATA;
vm->m_is_dirty = true;
}
s16 ServerMap::findGroundLevel(v2s16 p2d)
{
#if 0
/*
Uh, just do something random...
*/
// Find existing map from top to down
s16 max=63;
s16 min=-64;
v3s16 p(p2d.X, max, p2d.Y);
for(; p.Y>min; p.Y--)
{
MapNode n = getNodeNoEx(p);
if(n.getContent() != CONTENT_IGNORE)
break;
}
if(p.Y == min)
goto plan_b;
// If this node is not air, go to plan b
if(getNodeNoEx(p).getContent() != CONTENT_AIR)
goto plan_b;
// Search existing walkable and return it
for(; p.Y>min; p.Y--)
{
MapNode n = getNodeNoEx(p);
if(content_walkable(n.d) && n.getContent() != CONTENT_IGNORE)
return p.Y;
}
// Move to plan b
plan_b:
#endif
/*
Determine from map generator noise functions
*/
s16 level = m_emerge->getGroundLevelAtPoint(p2d);
return level;
//double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
//return (s16)level;
}
bool ServerMap::loadFromFolders() {
if (!dbase->initialized() &&
!fs::PathExists(m_savedir + DIR_DELIM + "map.sqlite"))
return true;
return false;
}
void ServerMap::createDirs(std::string path)
{
if (!fs::CreateAllDirs(path)) {
m_dout<<"ServerMap: Failed to create directory "
<<"\""<<path<<"\""<<std::endl;
throw BaseException("ServerMap failed to create directory");
}
}
std::string ServerMap::getSectorDir(v2s16 pos, int layout)
{
char cc[9];
switch(layout)
{
case 1:
snprintf(cc, 9, "%.4x%.4x",
(unsigned int) pos.X & 0xffff,
(unsigned int) pos.Y & 0xffff);
return m_savedir + DIR_DELIM + "sectors" + DIR_DELIM + cc;
case 2:
snprintf(cc, 9, (std::string("%.3x") + DIR_DELIM + "%.3x").c_str(),
(unsigned int) pos.X & 0xfff,
(unsigned int) pos.Y & 0xfff);
return m_savedir + DIR_DELIM + "sectors2" + DIR_DELIM + cc;
default:
assert(false);
return "";
}
}
v2s16 ServerMap::getSectorPos(const std::string &dirname)
{
unsigned int x = 0, y = 0;
int r;
std::string component;
fs::RemoveLastPathComponent(dirname, &component, 1);
if(component.size() == 8)
{
// Old layout
r = sscanf(component.c_str(), "%4x%4x", &x, &y);
}
else if(component.size() == 3)
{
// New layout
fs::RemoveLastPathComponent(dirname, &component, 2);
r = sscanf(component.c_str(), (std::string("%3x") + DIR_DELIM + "%3x").c_str(), &x, &y);
// Sign-extend the 12 bit values up to 16 bits...
if(x & 0x800) x |= 0xF000;
if(y & 0x800) y |= 0xF000;
}
else
{
r = -1;
}
FATAL_ERROR_IF(r != 2, "getSectorPos()");
v2s16 pos((s16)x, (s16)y);
return pos;
}
v3s16 ServerMap::getBlockPos(const std::string &sectordir, const std::string &blockfile)
{
v2s16 p2d = getSectorPos(sectordir);
if(blockfile.size() != 4){
throw InvalidFilenameException("Invalid block filename");
}
unsigned int y;
int r = sscanf(blockfile.c_str(), "%4x", &y);
if(r != 1)
throw InvalidFilenameException("Invalid block filename");
return v3s16(p2d.X, y, p2d.Y);
}
std::string ServerMap::getBlockFilename(v3s16 p)
{
char cc[5];
snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
return cc;
}
void ServerMap::save(ModifiedState save_level)
{
if (!m_map_saving_enabled) {
warningstream<<"Not saving map, saving disabled."<<std::endl;
return;
}
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 &sector_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<<" block files"
<<", "<<block_count_all<<" blocks in memory."
<<std::endl;
PrintInfo(infostream); // ServerMap/ClientMap:
infostream<<"Blocks modified by: "<<std::endl;
modprofiler.print(infostream);
}
}
void ServerMap::listAllLoadableBlocks(std::vector<v3s16> &dst)
{
if (loadFromFolders()) {
errorstream << "Map::listAllLoadableBlocks(): Result will be missing "
<< "all blocks that are stored in flat files." << std::endl;
}
dbase->listAllLoadableBlocks(dst);
}
void ServerMap::listAllLoadedBlocks(std::vector<v3s16> &dst)
{
for (auto &sector_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);
}
bool ServerMap::saveBlock(MapBlock *block, MapDatabase *db)
{
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);
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(const std::string &sectordir, const std::string &blockfile,
MapSector *sector, bool save_after_load)
{
std::string fullpath = sectordir + DIR_DELIM + blockfile;
try {
std::ifstream is(fullpath.c_str(), std::ios_base::binary);
if (!is.good())
throw FileNotGoodException("Cannot open block file");
v3s16 p3d = getBlockPos(sectordir, blockfile);
v2s16 p2d(p3d.X, p3d.Z);
assert(sector->getPos() == p2d);
u8 version = SER_FMT_VER_INVALID;
is.read((char*)&version, 1);
if(is.fail())
throw SerializationError("ServerMap::loadBlock(): Failed"
" to read MapBlock version");
/*u32 block_size = MapBlock::serializedLength(version);
SharedBuffer<u8> data(block_size);
is.read((char*)*data, block_size);*/
// This will always return a sector because we're the server
//MapSector *sector = emergeSector(p2d);
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_WRITE || save_after_load)
{
saveBlock(block);
// Should be in database now, so delete the old file
fs::RecursiveDelete(fullpath);
}
// We just loaded it from the disk, so it's up-to-date.
block->resetModified();
}
catch(SerializationError &e)
{
warningstream<<"Invalid block data on disk "
<<"fullpath="<<fullpath
<<" (SerializationError). "
<<"what()="<<e.what()
<<std::endl;
// Ignoring. A new one will be generated.
abort();
// TODO: Backup file; name is in fullpath.
}
}
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 {
// Not found in database, try the files
// The directory layout we're going to load from.
// 1 - original sectors/xxxxzzzz/
// 2 - new sectors2/xxx/zzz/
// If we load from anything but the latest structure, we will
// immediately save to the new one, and remove the old.
std::string sectordir1 = getSectorDir(p2d, 1);
std::string sectordir;
if (fs::PathExists(sectordir1)) {
sectordir = sectordir1;
} else {
sectordir = getSectorDir(p2d, 2);
}
/*
Make sure sector is loaded
*/
MapSector *sector = getSectorNoGenerateNoEx(p2d);
/*
Make sure file exists
*/
std::string blockfilename = getBlockFilename(blockpos);
if (!fs::PathExists(sectordir + DIR_DELIM + blockfilename))
return NULL;
/*
Load block and save it to the database
*/
loadBlock(sectordir, blockfilename, sector, true);
}
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 = getSectorNoGenerateNoEx(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;
try
{
TimeTaker timer2("emerge load", &emerge_load_time);
block = m_map->getBlockNoCreate(p);
if(block->isDummy())
block_data_inexistent = true;
else
block->copyTo(*this);
}
catch(InvalidPositionException &e)
{
block_data_inexistent = true;
}
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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