void MapBlock::copyFrom(VoxelManipulator &dst)
{
v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
// Copy from VoxelManipulator to data
dst.copyTo(data, data_area, v3s16(0,0,0),
getPosRelative(), data_size);
}
bool MapBlock::isValidPositionParent(v3s16 p)
{
if(isValidPosition(p))
{
return true;
}
else{
return m_parent->isValidPosition(getPosRelative() + p);
}
}
void MapBlock::copyTo(VoxelManipulator &dst)
{
auto lock = lock_shared_rec();
v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
// Copy from data to VoxelManipulator
dst.copyFrom(data, data_area, v3s16(0,0,0),
getPosRelative(), data_size);
}
MapNode MapBlock::getNodeParent(v3s16 p)
{
if(isValidPosition(p) == false)
{
return m_parent->getNode(getPosRelative() + p);
}
else
{
if(data == NULL)
throw InvalidPositionException();
return data[p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X];
}
}
void MapBlock::setNodeParent(v3s16 p, MapNode & n)
{
if(isValidPosition(p) == false)
{
m_parent->setNode(getPosRelative() + p, n);
}
else
{
if(data == NULL)
throw InvalidPositionException();
data[p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X] = n;
}
}
MapNode MapBlock::getNodeParent(v3s16 p, bool *is_valid_position)
{
if (isValidPosition(p) == false)
return m_parent->getNodeNoEx(getPosRelative() + p, is_valid_position);
if (data == NULL) {
if (is_valid_position)
*is_valid_position = false;
return MapNode(CONTENT_IGNORE);
}
if (is_valid_position)
*is_valid_position = true;
return data[p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X];
}
MapNode MapBlock::getNodeParent(v3s16 p, bool *is_valid_position)
{
if (isValidPosition(p) == false)
return m_parent->getNodeNoEx(getPosRelative() + p, is_valid_position);
if (!data) {
if (is_valid_position)
*is_valid_position = false;
return MapNode(CONTENT_IGNORE);
}
if (is_valid_position)
*is_valid_position = true;
return data[p.Z * zstride + p.Y * ystride + p.X];
}
MapNode MapBlock::getNodeParentNoEx(v3s16 p)
{
if(isValidPosition(p) == false)
{
try{
return m_parent->getNode(getPosRelative() + p);
}
catch(InvalidPositionException &e)
{
return MapNode(CONTENT_IGNORE);
}
}
else
{
if(data == NULL)
{
return MapNode(CONTENT_IGNORE);
}
return data[p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X];
}
}
MapNode MapBlock::getNodeParent(v3s16 p, bool *is_valid_position)
{
if (isValidPosition(p) == false)
return m_parent->getNodeTry(getPosRelative() + p);
if (data == NULL) {
if (is_valid_position)
*is_valid_position = false;
return MapNode(CONTENT_IGNORE);
}
auto lock = try_lock_shared_rec();
if (!lock->owns_lock()) {
if (is_valid_position)
*is_valid_position = false;
return MapNode(CONTENT_IGNORE);
}
if (is_valid_position)
*is_valid_position = true;
return data[p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X];
}
/*
Propagates sunlight down through the block.
Doesn't modify nodes that are not affected by sunlight.
Returns false if sunlight at bottom block is invalid.
Returns true if sunlight at bottom block is valid.
Returns true if bottom block doesn't exist.
If there is a block above, continues from it.
If there is no block above, assumes there is sunlight, unless
is_underground is set or highest node is water.
All sunlighted nodes are added to light_sources.
if remove_light==true, sets non-sunlighted nodes black.
if black_air_left!=NULL, it is set to true if non-sunlighted
air is left in block.
*/
bool MapBlock::propagateSunlight(core::map<v3s16, bool> & light_sources,
bool remove_light, bool *black_air_left)
{
INodeDefManager *nodemgr = m_gamedef->ndef();
// Whether the sunlight at the top of the bottom block is valid
bool block_below_is_valid = true;
v3s16 pos_relative = getPosRelative();
for(s16 x=0; x<MAP_BLOCKSIZE; x++)
{
for(s16 z=0; z<MAP_BLOCKSIZE; z++)
{
#if 1
bool no_sunlight = false;
bool no_top_block = false;
// Check if node above block has sunlight
try{
MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
if(n.getContent() == CONTENT_IGNORE)
{
// Trust heuristics
no_sunlight = is_underground;
}
else if(n.getLight(LIGHTBANK_DAY, m_gamedef->ndef()) != LIGHT_SUN)
{
no_sunlight = true;
}
}
catch(InvalidPositionException &e)
{
no_top_block = true;
// NOTE: This makes over-ground roofed places sunlighted
// Assume sunlight, unless is_underground==true
if(is_underground)
{
no_sunlight = true;
}
else
{
MapNode n = getNode(v3s16(x, MAP_BLOCKSIZE-1, z));
if(m_gamedef->ndef()->get(n).sunlight_propagates == false)
{
no_sunlight = true;
}
}
// NOTE: As of now, this just would make everything dark.
// No sunlight here
//no_sunlight = true;
}
#endif
#if 0 // Doesn't work; nothing gets light.
bool no_sunlight = true;
bool no_top_block = false;
// Check if node above block has sunlight
try{
MapNode n = getNodeParent(v3s16(x, MAP_BLOCKSIZE, z));
if(n.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
{
no_sunlight = false;
}
}
catch(InvalidPositionException &e)
{
no_top_block = true;
}
#endif
/*std::cout<<"("<<x<<","<<z<<"): "
<<"no_top_block="<<no_top_block
<<", is_underground="<<is_underground
<<", no_sunlight="<<no_sunlight
<<std::endl;*/
s16 y = MAP_BLOCKSIZE-1;
// This makes difference to diminishing in water.
bool stopped_to_solid_object = false;
u8 current_light = no_sunlight ? 0 : LIGHT_SUN;
for(; y >= 0; y--)
{
v3s16 pos(x, y, z);
MapNode &n = getNodeRef(pos);
if(current_light == 0)
{
// Do nothing
}
else if(current_light == LIGHT_SUN && nodemgr->get(n).sunlight_propagates)
{
// Do nothing: Sunlight is continued
}
else if(nodemgr->get(n).light_propagates == false)
{
// A solid object is on the way.
stopped_to_solid_object = true;
// Light stops.
current_light = 0;
}
else
{
// Diminish light
current_light = diminish_light(current_light);
}
u8 old_light = n.getLight(LIGHTBANK_DAY, nodemgr);
if(current_light > old_light || remove_light)
{
n.setLight(LIGHTBANK_DAY, current_light, nodemgr);
}
if(diminish_light(current_light) != 0)
{
light_sources.insert(pos_relative + pos, true);
}
if(current_light == 0 && stopped_to_solid_object)
{
if(black_air_left)
{
*black_air_left = true;
}
}
}
// Whether or not the block below should see LIGHT_SUN
bool sunlight_should_go_down = (current_light == LIGHT_SUN);
/*
If the block below hasn't already been marked invalid:
Check if the node below the block has proper sunlight at top.
If not, the block below is invalid.
Ignore non-transparent nodes as they always have no light
*/
try
{
if(block_below_is_valid)
{
MapNode n = getNodeParent(v3s16(x, -1, z));
if(nodemgr->get(n).light_propagates)
{
if(n.getLight(LIGHTBANK_DAY, nodemgr) == LIGHT_SUN
&& sunlight_should_go_down == false)
block_below_is_valid = false;
else if(n.getLight(LIGHTBANK_DAY, nodemgr) != LIGHT_SUN
&& sunlight_should_go_down == true)
block_below_is_valid = false;
}
}//if
}//try
catch(InvalidPositionException &e)
{
/*std::cout<<"InvalidBlockException for bottom block node"
<<std::endl;*/
// Just no block below, no need to panic.
}
}
}
return block_below_is_valid;
}
u32 Map::updateLighting(concurrent_map<v3POS, MapBlock*> & a_blocks,
std::map<v3POS, MapBlock*> & modified_blocks, unsigned int max_cycle_ms) {
INodeDefManager *nodemgr = m_gamedef->ndef();
int ret = 0;
int loopcount = 0;
TimeTaker timer("updateLighting");
// For debugging
//bool debug=true;
//u32 count_was = modified_blocks.size();
//std::unordered_set<v3POS, v3POSHash, v3POSEqual> light_sources;
//std::unordered_map<v3POS, u8, v3POSHash, v3POSEqual> unlight_from_day, unlight_from_night;
std::set<v3POS> light_sources;
std::map<v3POS, u8> unlight_from_day, unlight_from_night;
unordered_map_v3POS<int> processed;
int num_bottom_invalid = 0;
//MutexAutoLock lock2(m_update_lighting_mutex);
#if !ENABLE_THREADS
auto lock = m_nothread_locker.lock_unique_rec();
#endif
{
//TimeTaker t("updateLighting: first stuff");
u32 end_ms = porting::getTimeMs() + max_cycle_ms;
for(auto i = a_blocks.begin();
i != a_blocks.end(); ++i) {
auto block = getBlockNoCreateNoEx(i->first);
for(;;) {
// Don't bother with dummy blocks.
if(!block || block->isDummy())
break;
auto lock = block->try_lock_unique_rec();
if (!lock->owns_lock())
break; // may cause dark areas
v3POS pos = block->getPos();
if (processed.count(pos) && processed[pos] <= i->first.Y ) {
break;
}
++loopcount;
processed[pos] = i->first.Y;
v3POS posnodes = block->getPosRelative();
//modified_blocks[pos] = block;
block->setLightingExpired(true);
block->lighting_broken = true;
/*
Clear all light from block
*/
for(s16 z = 0; z < MAP_BLOCKSIZE; z++)
for(s16 x = 0; x < MAP_BLOCKSIZE; x++)
for(s16 y = 0; y < MAP_BLOCKSIZE; y++) {
v3POS p(x, y, z);
bool is_valid_position;
MapNode n = block->getNode(p, &is_valid_position);
if (!is_valid_position) {
/* This would happen when dealing with a
dummy block.
*/
infostream << "updateLighting(): InvalidPositionException"
<< std::endl;
continue;
}
u8 oldlight_day = n.getLight(LIGHTBANK_DAY, nodemgr);
u8 oldlight_night = n.getLight(LIGHTBANK_NIGHT, nodemgr);
n.setLight(LIGHTBANK_DAY, 0, nodemgr);
n.setLight(LIGHTBANK_NIGHT, 0, nodemgr);
block->setNode(p, n);
// If node sources light, add to list
//u8 source = nodemgr->get(n).light_source;
if(nodemgr->get(n).light_source)
light_sources.insert(p + posnodes);
v3POS p_map = p + posnodes;
// Collect borders for unlighting
if(x == 0 || x == MAP_BLOCKSIZE - 1
|| y == 0 || y == MAP_BLOCKSIZE - 1
|| z == 0 || z == MAP_BLOCKSIZE - 1) {
if(oldlight_day)
unlight_from_day[p_map] = oldlight_day;
if(oldlight_night)
unlight_from_night[p_map] = oldlight_night;
}
}
lock->unlock();
bool bottom_valid = propagateSunlight(pos, light_sources);
if(!bottom_valid)
num_bottom_invalid++;
pos.Y--;
block = getBlockNoCreateNoEx(pos);
}
if (porting::getTimeMs() > end_ms) {
++ret;
break;
}
}
}
{
//TimeTaker timer("updateLighting: unspreadLight");
unspreadLight(LIGHTBANK_DAY, unlight_from_day, light_sources, modified_blocks);
unspreadLight(LIGHTBANK_NIGHT, unlight_from_night, light_sources, modified_blocks);
}
{
//TimeTaker timer("updateLighting: spreadLight");
spreadLight(LIGHTBANK_DAY, light_sources, modified_blocks, porting::getTimeMs() + max_cycle_ms * 10);
spreadLight(LIGHTBANK_NIGHT, light_sources, modified_blocks, porting::getTimeMs() + max_cycle_ms * 10);
}
for (auto & i : processed) {
a_blocks.erase(i.first);
MapBlock *block = getBlockNoCreateNoEx(i.first);
if(!block)
continue;
block->setLightingExpired(false);
block->lighting_broken = false;
}
g_profiler->add("Server: light blocks", loopcount);
return ret;
}
