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map.cpp
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map.cpp
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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <[email protected]>
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;
}
auto 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::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;
}
static void set_node_in_block(MapBlock *block, v3s16 relpos, MapNode n)
{
// Never allow placing CONTENT_IGNORE, it causes problems
if(n.getContent() == CONTENT_IGNORE){
const NodeDefManager *nodedef = block->getParent()->getNodeDefManager();
v3s16 blockpos = block->getPos();
v3s16 p = blockpos * MAP_BLOCKSIZE + relpos;
bool temp_bool;
errorstream<<"Not allowing to place CONTENT_IGNORE"
<<" while trying to replace \""
<<nodedef->get(block->getNodeNoCheck(relpos, &temp_bool)).name
<<"\" at "<<PP(p)<<" (block "<<PP(blockpos)<<")"<<std::endl;
return;
}
block->setNodeNoCheck(relpos, n);
}
// 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;
set_node_in_block(block, 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);
v3s16 blockpos = getNodeBlockPos(p);
MapBlock *block = getBlockNoCreate(blockpos);
if (block->isDummy())
throw InvalidPositionException();
v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
// This is needed for updating the lighting
MapNode oldnode = block->getNodeUnsafe(relpos);
// Remove node metadata
if (remove_metadata) {
removeNodeMetadata(p);
}
// Set the node on the map
const ContentFeatures &cf = m_nodedef->get(n);
const ContentFeatures &oldcf = m_nodedef->get(oldnode);
if (cf.lightingEquivalent(oldcf)) {
// No light update needed, just copy over the old light.
n.setLight(LIGHTBANK_DAY, oldnode.getLightRaw(LIGHTBANK_DAY, oldcf), cf);
n.setLight(LIGHTBANK_NIGHT, oldnode.getLightRaw(LIGHTBANK_NIGHT, oldcf), cf);
set_node_in_block(block, relpos, n);
modified_blocks[blockpos] = block;
} else {
// Ignore light (because calling voxalgo::update_lighting_nodes)
n.setLight(LIGHTBANK_DAY, 0, cf);
n.setLight(LIGHTBANK_NIGHT, 0, cf);
set_node_in_block(block, relpos, 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);
}
}
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, s32 max_loaded_blocks,
std::vector<v3s16> *unloaded_blocks)
{
bool save_before_unloading = maySaveBlocks();
// 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;
const auto start_time = porting::getTimeUs();
beginSave();
// If there is no practical limit, we spare creation of mapblock_queue
if (max_loaded_blocks < 0) {
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++;
}
}
// Delete sector if we emptied it
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() && ((s32)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();
const auto end_time = porting::getTimeUs();
reportMetrics(end_time - start_time, saved_blocks_count, block_count_all);
// 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 ServerMap::transforming_liquid_add(v3s16 p) {
m_transforming_liquid.push_back(p);
}
void ServerMap::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::vector<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 (const 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();
}