void *EmergeThread::Thread() {
ThreadStarted();
log_register_thread("EmergeThread" + itos(id));
DSTACK(__FUNCTION_NAME);
BEGIN_DEBUG_EXCEPTION_HANDLER
v3s16 last_tried_pos(-32768,-32768,-32768); // For error output
v3s16 p;
u8 flags = 0;
map = (ServerMap *)&(m_server->m_env->getMap());
emerge = m_server->m_emerge;
mapgen = emerge->mapgen[id];
enable_mapgen_debug_info = emerge->mapgen_debug_info;
porting::setThreadName("EmergeThread");
while (!StopRequested())
try {
if (!popBlockEmerge(&p, &flags)) {
qevent.wait();
continue;
}
last_tried_pos = p;
if (blockpos_over_limit(p))
continue;
bool allow_generate = flags & BLOCK_EMERGE_ALLOWGEN;
EMERGE_DBG_OUT("p=" PP(p) " allow_generate=" << allow_generate);
/*
Try to fetch block from memory or disk.
If not found and asked to generate, initialize generator.
*/
BlockMakeData data;
MapBlock *block = NULL;
std::map<v3s16, MapBlock *> modified_blocks;
if (getBlockOrStartGen(p, &block, &data, allow_generate) && mapgen) {
{
ScopeProfiler sp(g_profiler, "EmergeThread: Mapgen::makeChunk", SPT_AVG);
TimeTaker t("mapgen::make_block()");
mapgen->makeChunk(&data);
if (enable_mapgen_debug_info == false)
t.stop(true); // Hide output
}
{
//envlock: usually 0ms, but can take either 30 or 400ms to acquire
JMutexAutoLock envlock(m_server->m_env_mutex);
ScopeProfiler sp(g_profiler, "EmergeThread: after "
"Mapgen::makeChunk (envlock)", SPT_AVG);
map->finishBlockMake(&data, modified_blocks);
block = map->getBlockNoCreateNoEx(p);
if (block) {
/*
Do some post-generate stuff
*/
v3s16 minp = data.blockpos_min * MAP_BLOCKSIZE;
v3s16 maxp = data.blockpos_max * MAP_BLOCKSIZE +
v3s16(1,1,1) * (MAP_BLOCKSIZE - 1);
// Ignore map edit events, they will not need to be sent
// to anybody because the block hasn't been sent to anybody
MapEditEventAreaIgnorer
ign(&m_server->m_ignore_map_edit_events_area,
VoxelArea(minp, maxp));
try { // takes about 90ms with -O1 on an e3-1230v2
m_server->getScriptIface()->environment_OnGenerated(
minp, maxp, emerge->getBlockSeed(minp));
} catch(LuaError &e) {
m_server->setAsyncFatalError(e.what());
}
EMERGE_DBG_OUT("ended up with: " << analyze_block(block));
m_server->m_env->activateBlock(block, 0);
}
}
}
/*
Set sent status of modified blocks on clients
*/
// Add the originally fetched block to the modified list
if (block)
modified_blocks[p] = block;
if (modified_blocks.size() > 0) {
m_server->SetBlocksNotSent(modified_blocks);
}
}
catch (VersionMismatchException &e) {
std::ostringstream err;
err << "World data version mismatch in MapBlock "<<PP(last_tried_pos)<<std::endl;
err << "----"<<std::endl;
err << "\""<<e.what()<<"\""<<std::endl;
err << "See debug.txt."<<std::endl;
err << "World probably saved by a newer version of Minetest."<<std::endl;
m_server->setAsyncFatalError(err.str());
}
catch (SerializationError &e) {
std::ostringstream err;
err << "Invalid data in MapBlock "<<PP(last_tried_pos)<<std::endl;
err << "----"<<std::endl;
err << "\""<<e.what()<<"\""<<std::endl;
err << "See debug.txt."<<std::endl;
err << "You can ignore this using [ignore_world_load_errors = true]."<<std::endl;
m_server->setAsyncFatalError(err.str());
}
END_DEBUG_EXCEPTION_HANDLER(errorstream)
log_deregister_thread();
return NULL;
}
void RemoteClient::GetNextBlocks (
ServerEnvironment *env,
EmergeManager * emerge,
float dtime,
std::vector<PrioritySortedBlockTransfer> &dest)
{
DSTACK(FUNCTION_NAME);
// Increment timers
m_nothing_to_send_pause_timer -= dtime;
m_nearest_unsent_reset_timer += dtime;
if(m_nothing_to_send_pause_timer >= 0)
return;
Player *player = env->getPlayer(peer_id);
// This can happen sometimes; clients and players are not in perfect sync.
if(player == NULL)
return;
// Won't send anything if already sending
if(m_blocks_sending.size() >= g_settings->getU16
("max_simultaneous_block_sends_per_client"))
{
//infostream<<"Not sending any blocks, Queue full."<<std::endl;
return;
}
v3f playerpos = player->getPosition();
v3f playerspeed = player->getSpeed();
v3f playerspeeddir(0,0,0);
if(playerspeed.getLength() > 1.0*BS)
playerspeeddir = playerspeed / playerspeed.getLength();
// Predict to next block
v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
v3s16 center = getNodeBlockPos(center_nodepos);
// Camera position and direction
v3f camera_pos = player->getEyePosition();
v3f camera_dir = v3f(0,0,1);
camera_dir.rotateYZBy(player->getPitch());
camera_dir.rotateXZBy(player->getYaw());
/*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
<<camera_dir.Z<<")"<<std::endl;*/
/*
Get the starting value of the block finder radius.
*/
if(m_last_center != center)
{
m_nearest_unsent_d = 0;
m_last_center = center;
}
/*infostream<<"m_nearest_unsent_reset_timer="
<<m_nearest_unsent_reset_timer<<std::endl;*/
// Reset periodically to workaround for some bugs or stuff
if(m_nearest_unsent_reset_timer > 20.0)
{
m_nearest_unsent_reset_timer = 0;
m_nearest_unsent_d = 0;
//infostream<<"Resetting m_nearest_unsent_d for "
// <<server->getPlayerName(peer_id)<<std::endl;
}
//s16 last_nearest_unsent_d = m_nearest_unsent_d;
s16 d_start = m_nearest_unsent_d;
//infostream<<"d_start="<<d_start<<std::endl;
u16 max_simul_sends_setting = g_settings->getU16
("max_simultaneous_block_sends_per_client");
u16 max_simul_sends_usually = max_simul_sends_setting;
/*
Check the time from last addNode/removeNode.
Decrease send rate if player is building stuff.
*/
m_time_from_building += dtime;
if(m_time_from_building < g_settings->getFloat(
"full_block_send_enable_min_time_from_building"))
{
max_simul_sends_usually
= LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
}
/*
Number of blocks sending + number of blocks selected for sending
*/
u32 num_blocks_selected = m_blocks_sending.size();
/*
next time d will be continued from the d from which the nearest
unsent block was found this time.
This is because not necessarily any of the blocks found this
time are actually sent.
*/
s32 new_nearest_unsent_d = -1;
const s16 full_d_max = g_settings->getS16("max_block_send_distance");
s16 d_max = full_d_max;
s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
// Don't loop very much at a time
s16 max_d_increment_at_time = 2;
if(d_max > d_start + max_d_increment_at_time)
d_max = d_start + max_d_increment_at_time;
s32 nearest_emerged_d = -1;
s32 nearest_emergefull_d = -1;
s32 nearest_sent_d = -1;
//bool queue_is_full = false;
s16 d;
for(d = d_start; d <= d_max; d++) {
/*
Get the border/face dot coordinates of a "d-radiused"
box
*/
std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
std::vector<v3s16>::iterator li;
for(li = list.begin(); li != list.end(); ++li) {
v3s16 p = *li + center;
/*
Send throttling
- Don't allow too many simultaneous transfers
- EXCEPT when the blocks are very close
Also, don't send blocks that are already flying.
*/
// Start with the usual maximum
u16 max_simul_dynamic = max_simul_sends_usually;
// If block is very close, allow full maximum
if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
max_simul_dynamic = max_simul_sends_setting;
// Don't select too many blocks for sending
if (num_blocks_selected >= max_simul_dynamic) {
//queue_is_full = true;
goto queue_full_break;
}
// Don't send blocks that are currently being transferred
if (m_blocks_sending.find(p) != m_blocks_sending.end())
continue;
/*
Do not go over-limit
*/
if (blockpos_over_limit(p))
continue;
// If this is true, inexistent block will be made from scratch
bool generate = d <= d_max_gen;
{
/*// Limit the generating area vertically to 2/3
if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
generate = false;*/
// Limit the send area vertically to 1/2
if (abs(p.Y - center.Y) > full_d_max / 2)
continue;
}
/*
Don't generate or send if not in sight
FIXME This only works if the client uses a small enough
FOV setting. The default of 72 degrees is fine.
*/
float camera_fov = (72.0*M_PI/180) * 4./3.;
if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
{
continue;
}
/*
Don't send already sent blocks
*/
{
if(m_blocks_sent.find(p) != m_blocks_sent.end())
{
continue;
}
}
/*
Check if map has this block
*/
MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
bool surely_not_found_on_disk = false;
bool block_is_invalid = false;
if(block != NULL)
{
// Reset usage timer, this block will be of use in the future.
block->resetUsageTimer();
// Block is dummy if data doesn't exist.
// It means it has been not found from disk and not generated
if(block->isDummy())
{
surely_not_found_on_disk = true;
}
// Block is valid if lighting is up-to-date and data exists
if(block->isValid() == false)
{
block_is_invalid = true;
}
if(block->isGenerated() == false)
block_is_invalid = true;
/*
If block is not close, don't send it unless it is near
ground level.
Block is near ground level if night-time mesh
differs from day-time mesh.
*/
if(d >= 4)
{
if(block->getDayNightDiff() == false)
continue;
}
}
/*
If block has been marked to not exist on disk (dummy)
and generating new ones is not wanted, skip block.
*/
if(generate == false && surely_not_found_on_disk == true)
{
// get next one.
continue;
}
/*
Add inexistent block to emerge queue.
*/
if(block == NULL || surely_not_found_on_disk || block_is_invalid)
{
if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
if (nearest_emerged_d == -1)
nearest_emerged_d = d;
} else {
if (nearest_emergefull_d == -1)
nearest_emergefull_d = d;
goto queue_full_break;
}
// get next one.
continue;
}
if(nearest_sent_d == -1)
nearest_sent_d = d;
/*
Add block to send queue
*/
PrioritySortedBlockTransfer q((float)d, p, peer_id);
dest.push_back(q);
num_blocks_selected += 1;
}
}
queue_full_break:
// If nothing was found for sending and nothing was queued for
// emerging, continue next time browsing from here
if(nearest_emerged_d != -1){
new_nearest_unsent_d = nearest_emerged_d;
} else if(nearest_emergefull_d != -1){
new_nearest_unsent_d = nearest_emergefull_d;
} else {
if(d > g_settings->getS16("max_block_send_distance")){
new_nearest_unsent_d = 0;
m_nothing_to_send_pause_timer = 2.0;
} else {
if(nearest_sent_d != -1)
new_nearest_unsent_d = nearest_sent_d;
else
new_nearest_unsent_d = d;
}
}
if(new_nearest_unsent_d != -1)
m_nearest_unsent_d = new_nearest_unsent_d;
}
void *EmergeThread::run()
{
DSTACK(FUNCTION_NAME);
BEGIN_DEBUG_EXCEPTION_HANDLER
v3s16 pos;
m_map = (ServerMap *)&(m_server->m_env->getMap());
m_emerge = m_server->m_emerge;
m_mapgen = m_emerge->m_mapgens[id];
enable_mapgen_debug_info = m_emerge->enable_mapgen_debug_info;
try {
while (!stopRequested()) {
std::map<v3s16, MapBlock *> modified_blocks;
BlockEmergeData bedata;
BlockMakeData bmdata;
EmergeAction action;
MapBlock *block;
if (!popBlockEmerge(&pos, &bedata)) {
m_queue_event.wait();
continue;
}
if (blockpos_over_limit(pos))
continue;
bool allow_gen = bedata.flags & BLOCK_EMERGE_ALLOW_GEN;
EMERGE_DBG_OUT("pos=" PP(pos) " allow_gen=" << allow_gen);
action = getBlockOrStartGen(pos, allow_gen, &block, &bmdata);
if (action == EMERGE_GENERATED) {
{
ScopeProfiler sp(g_profiler,
"EmergeThread: Mapgen::makeChunk", SPT_AVG);
TimeTaker t("mapgen::make_block()");
m_mapgen->makeChunk(&bmdata);
if (enable_mapgen_debug_info == false)
t.stop(true); // Hide output
}
block = finishGen(pos, &bmdata, &modified_blocks);
}
runCompletionCallbacks(pos, action, bedata.callbacks);
if (block)
modified_blocks[pos] = block;
if (modified_blocks.size() > 0)
m_server->SetBlocksNotSent(modified_blocks);
}
} catch (VersionMismatchException &e) {
std::ostringstream err;
err << "World data version mismatch in MapBlock " << PP(pos) << std::endl
<< "----" << std::endl
<< "\"" << e.what() << "\"" << std::endl
<< "See debug.txt." << std::endl
<< "World probably saved by a newer version of " PROJECT_NAME_C "."
<< std::endl;
m_server->setAsyncFatalError(err.str());
} catch (SerializationError &e) {
std::ostringstream err;
err << "Invalid data in MapBlock " << PP(pos) << std::endl
<< "----" << std::endl
<< "\"" << e.what() << "\"" << std::endl
<< "See debug.txt." << std::endl
<< "You can ignore this using [ignore_world_load_errors = true]."
<< std::endl;
m_server->setAsyncFatalError(err.str());
}
END_DEBUG_EXCEPTION_HANDLER
return NULL;
}
int RemoteClient::GetNextBlocks (
ServerEnvironment *env,
EmergeManager * emerge,
float dtime,
double m_uptime,
std::vector<PrioritySortedBlockTransfer> &dest)
{
DSTACK(FUNCTION_NAME);
auto lock = lock_unique_rec();
if (!lock->owns_lock())
return 0;
// Increment timers
m_nothing_to_send_pause_timer -= dtime;
m_nearest_unsent_reset_timer += dtime;
m_time_from_building += dtime;
if (m_nearest_unsent_reset) {
m_nearest_unsent_reset = 0;
m_nearest_unsent_reset_timer = 999;
m_nothing_to_send_pause_timer = 0;
m_time_from_building = 999;
}
if(m_nothing_to_send_pause_timer >= 0)
return 0;
Player *player = env->getPlayer(peer_id);
// This can happen sometimes; clients and players are not in perfect sync.
if(player == NULL)
return 0;
v3f playerpos = player->getPosition();
v3f playerspeed = player->getSpeed();
if(playerspeed.getLength() > 1000.0*BS) //cheater or bug, ignore him
return 0;
v3f playerspeeddir(0,0,0);
if(playerspeed.getLength() > 1.0*BS)
playerspeeddir = playerspeed / playerspeed.getLength();
// Predict to next block
v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
v3s16 center = getNodeBlockPos(center_nodepos);
// Camera position and direction
v3f camera_pos = player->getEyePosition();
v3f camera_dir = v3f(0,0,1);
camera_dir.rotateYZBy(player->getPitch());
camera_dir.rotateXZBy(player->getYaw());
//infostream<<"camera_dir=("<<camera_dir<<")"<< " camera_pos="<<camera_pos<<std::endl;
/*
Get the starting value of the block finder radius.
*/
if(m_last_center != center)
{
m_last_center = center;
m_nearest_unsent_reset_timer = 999;
}
if (m_last_direction.getDistanceFrom(camera_dir)>0.4) { // 1 = 90deg
m_last_direction = camera_dir;
m_nearest_unsent_reset_timer = 999;
}
/*infostream<<"m_nearest_unsent_reset_timer="
<<m_nearest_unsent_reset_timer<<std::endl;*/
// Reset periodically to workaround for some bugs or stuff
if(m_nearest_unsent_reset_timer > 120.0)
{
m_nearest_unsent_reset_timer = 0;
m_nearest_unsent_d = 0;
m_nearest_unsent_reset = 0;
//infostream<<"Resetting m_nearest_unsent_d for "<<peer_id<<std::endl;
}
//s16 last_nearest_unsent_d = m_nearest_unsent_d;
s16 d_start = m_nearest_unsent_d;
//infostream<<"d_start="<<d_start<<std::endl;
static const u16 max_simul_sends_setting = g_settings->getU16
("max_simultaneous_block_sends_per_client");
static const u16 max_simul_sends_usually = max_simul_sends_setting;
/*
Check the time from last addNode/removeNode.
Decrease send rate if player is building stuff.
*/
static const auto full_block_send_enable_min_time_from_building = g_settings->getFloat("full_block_send_enable_min_time_from_building");
if(m_time_from_building < full_block_send_enable_min_time_from_building)
{
/*
max_simul_sends_usually
= LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
*/
if(d_start<=1)
d_start=2;
m_nearest_unsent_reset_timer = 999; //magical number more than ^ other number 120 - need to reset d on next iteration
}
/*
Number of blocks sending + number of blocks selected for sending
*/
u32 num_blocks_selected = 0;
u32 num_blocks_sending = 0;
/*
next time d will be continued from the d from which the nearest
unsent block was found this time.
This is because not necessarily any of the blocks found this
time are actually sent.
*/
s32 new_nearest_unsent_d = -1;
static const auto max_block_send_distance = g_settings->getS16("max_block_send_distance");
s16 full_d_max = max_block_send_distance;
if (wanted_range) {
s16 wanted_blocks = wanted_range / MAP_BLOCKSIZE + 1;
if (wanted_blocks < full_d_max)
full_d_max = wanted_blocks;
}
s16 d_max = full_d_max;
static const s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
// Don't loop very much at a time
s16 max_d_increment_at_time = 10;
if(d_max > d_start + max_d_increment_at_time)
d_max = d_start + max_d_increment_at_time;
/*if(d_max_gen > d_start+2)
d_max_gen = d_start+2;*/
//infostream<<"Starting from "<<d_start<<std::endl;
s32 nearest_emerged_d = -1;
s32 nearest_emergefull_d = -1;
s32 nearest_sent_d = -1;
//bool queue_is_full = false;
f32 speed_in_blocks = (playerspeed/(MAP_BLOCKSIZE*BS)).getLength();
int blocks_occlusion_culled = 0;
static const bool server_occlusion = g_settings->getBool("server_occlusion");
bool occlusion_culling_enabled = server_occlusion;
auto cam_pos_nodes = floatToInt(playerpos, BS);
auto nodemgr = env->getGameDef()->getNodeDefManager();
MapNode n;
{
#if !ENABLE_THREADS
auto lock = env->getServerMap().m_nothread_locker.lock_shared_rec();
#endif
n = env->getMap().getNodeTry(cam_pos_nodes);
}
if(n && nodemgr->get(n).solidness == 2)
occlusion_culling_enabled = false;
unordered_map_v3POS<bool> occlude_cache;
s16 d;
for(d = d_start; d <= d_max; d++) {
/*errorstream<<"checking d="<<d<<" for "
<<server->getPlayerName(peer_id)<<std::endl;*/
//infostream<<"RemoteClient::SendBlocks(): d="<<d<<" d_start="<<d_start<<" d_max="<<d_max<<" d_max_gen="<<d_max_gen<<std::endl;
std::vector<v3POS> list;
if (d > 2 && d == d_start && m_nearest_unsent_reset_timer != 999) { // oops, again magic number from up ^
list.push_back(v3POS(0,0,0));
}
bool can_skip = d > 1;
// Fast fall/move optimize. speed_in_blocks now limited to 6.4
if (speed_in_blocks>0.8 && d <= 2) {
can_skip = false;
if (d == 0) {
for(s16 addn = 0; addn < (speed_in_blocks+1)*2; ++addn)
list.push_back(floatToInt(playerspeeddir*addn, 1));
} else if (d == 1) {
for(s16 addn = 0; addn < (speed_in_blocks+1)*1.5; ++addn) {
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( 0, 0, 1)); // back
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( -1, 0, 0)); // left
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( 1, 0, 0)); // right
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( 0, 0, -1)); // front
}
} else if (d == 2) {
for(s16 addn = 0; addn < (speed_in_blocks+1)*1.5; ++addn) {
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( -1, 0, 1)); // back left
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( 1, 0, 1)); // left right
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( -1, 0, -1)); // right left
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3POS( 1, 0, -1)); // front right
}
}
} else {
/*
Get the border/face dot coordinates of a "d-radiused"
box
*/
list = FacePositionCache::getFacePositions(d);
}
for(auto li=list.begin(); li!=list.end(); ++li)
{
v3POS p = *li + center;
/*
Send throttling
- Don't allow too many simultaneous transfers
- EXCEPT when the blocks are very close
Also, don't send blocks that are already flying.
*/
// Start with the usual maximum
u16 max_simul_dynamic = max_simul_sends_usually;
// If block is very close, allow full maximum
if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
max_simul_dynamic = max_simul_sends_setting;
// Don't select too many blocks for sending
if (num_blocks_selected + num_blocks_sending >= max_simul_dynamic) {
//queue_is_full = true;
goto queue_full_break;
}
/*
Do not go over-limit
*/
if (blockpos_over_limit(p))
continue;
// If this is true, inexistent block will be made from scratch
bool generate = d <= d_max_gen;
{
/*// Limit the generating area vertically to 2/3
if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
generate = false;*/
/* maybe good idea (if not use block culling) but brokes far (25+) area generate by flooding emergequeue with no generate blocks
// Limit the send area vertically to 1/2
if(can_skip && abs(p.Y - center.Y) > full_d_max / 2)
generate = false;
*/
}
//infostream<<"d="<<d<<std::endl;
/*
Don't generate or send if not in sight
FIXME This only works if the client uses a small enough
FOV setting. The default of 72 degrees is fine.
*/
float camera_fov = ((fov+5)*M_PI/180) * 4./3.;
if(can_skip && isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
{
continue;
}
/*
Don't send already sent blocks
*/
unsigned int block_sent = 0;
{
auto lock = m_blocks_sent.lock_shared_rec();
block_sent = m_blocks_sent.find(p) != m_blocks_sent.end() ? m_blocks_sent.get(p) : 0;
}
if(block_sent > 0 && (/* (block_overflow && d>1) || */ block_sent + (d <= 2 ? 1 : d*d*d) > m_uptime)) {
continue;
}
/*
Check if map has this block
*/
MapBlock *block;
{
#if !ENABLE_THREADS
auto lock = env->getServerMap().m_nothread_locker.lock_shared_rec();
#endif
block = env->getMap().getBlockNoCreateNoEx(p);
}
bool surely_not_found_on_disk = false;
bool block_is_invalid = false;
if(block != NULL)
{
if (d > 3 && block->content_only == CONTENT_AIR) {
continue;
}
if (block_sent > 0 && block_sent >= block->m_changed_timestamp) {
continue;
}
if (occlusion_culling_enabled) {
ScopeProfiler sp(g_profiler, "SMap: Occusion calls");
//Occlusion culling
auto cpn = p*MAP_BLOCKSIZE;
// No occlusion culling when free_move is on and camera is
// inside ground
cpn += v3POS(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
float step = 1;
float stepfac = 1.3;
float startoff = 5;
float endoff = -MAP_BLOCKSIZE;
v3POS spn = cam_pos_nodes + v3POS(0,0,0);
s16 bs2 = MAP_BLOCKSIZE/2 + 1;
u32 needed_count = 1;
#if !ENABLE_THREADS
auto lock = env->getServerMap().m_nothread_locker.lock_shared_rec();
#endif
//VERY BAD COPYPASTE FROM clientmap.cpp!
if( d >= 1 &&
occlusion_culling_enabled &&
isOccluded(&env->getMap(), spn, cpn + v3POS(0,0,0),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(bs2,bs2,bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(bs2,bs2,-bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(bs2,-bs2,bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(bs2,-bs2,-bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(-bs2,bs2,bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(-bs2,bs2,-bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(-bs2,-bs2,bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache) &&
isOccluded(&env->getMap(), spn, cpn + v3POS(-bs2,-bs2,-bs2),
step, stepfac, startoff, endoff, needed_count, nodemgr, occlude_cache)
)
{
//infostream<<" occlusion player="<<cam_pos_nodes<<" d="<<d<<" block="<<cpn<<" total="<<blocks_occlusion_culled<<"/"<<num_blocks_selected<<std::endl;
g_profiler->add("SMap: Occlusion skip", 1);
blocks_occlusion_culled++;
continue;
}
}
// Reset usage timer, this block will be of use in the future.
block->resetUsageTimer();
if (block->getLightingExpired()) {
//env->getServerMap().lighting_modified_blocks.set(p, nullptr);
env->getServerMap().lighting_modified_add(p, d);
}
if (block->lighting_broken > 0 && (block_sent || d > 0))
continue;
// Block is valid if lighting is up-to-date and data exists
if(block->isValid() == false)
{
block_is_invalid = true;
}
if(block->isGenerated() == false)
{
continue;
}
/*
If block is not close, don't send it unless it is near
ground level.
Block is near ground level if night-time mesh
differs from day-time mesh.
*/
/*
if(d >= 4)
{
if(block->getDayNightDiff() == false)
continue;
}
*/
}
/*
If block has been marked to not exist on disk (dummy)
and generating new ones is not wanted, skip block.
*/
if(generate == false && surely_not_found_on_disk == true)
{
// get next one.
continue;
}
/*
Add inexistent block to emerge queue.
*/
if(block == NULL || surely_not_found_on_disk || block_is_invalid)
{
//infostream<<"start gen d="<<d<<" p="<<p<<" notfound="<<surely_not_found_on_disk<<" invalid="<< block_is_invalid<<" block="<<block<<" generate="<<generate<<std::endl;
if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
if (nearest_emerged_d == -1)
nearest_emerged_d = d;
} else {
if (nearest_emergefull_d == -1)
nearest_emergefull_d = d;
goto queue_full_break;
}
// get next one.
continue;
}
if(nearest_sent_d == -1)
nearest_sent_d = d;
/*
Add block to send queue
*/
PrioritySortedBlockTransfer q((float)d, p, peer_id);
dest.push_back(q);
num_blocks_selected += 1;
}
}
queue_full_break:
//infostream<<"Stopped at "<<d<<" d_start="<<d_start<< " d_max="<<d_max<<" nearest_emerged_d="<<nearest_emerged_d<<" nearest_emergefull_d="<<nearest_emergefull_d<< " new_nearest_unsent_d="<<new_nearest_unsent_d<< " sel="<<num_blocks_selected<< "+"<<num_blocks_sending << " culled=" << blocks_occlusion_culled <<" cEN="<<occlusion_culling_enabled<<std::endl;
num_blocks_selected += num_blocks_sending;
if(!num_blocks_selected && d_start <= d) {
//new_nearest_unsent_d = 0;
m_nothing_to_send_pause_timer = 1.0;
}
// If nothing was found for sending and nothing was queued for
// emerging, continue next time browsing from here
if(nearest_emerged_d != -1){
new_nearest_unsent_d = nearest_emerged_d;
} else if(nearest_emergefull_d != -1){
new_nearest_unsent_d = nearest_emergefull_d;
} else {
if(d > full_d_max){
new_nearest_unsent_d = 0;
m_nothing_to_send_pause_timer = 1.0;
} else {
if(nearest_sent_d != -1)
new_nearest_unsent_d = nearest_sent_d;
else
new_nearest_unsent_d = d;
}
}
if(new_nearest_unsent_d != -1)
m_nearest_unsent_d = new_nearest_unsent_d;
return num_blocks_selected - num_blocks_sending;
}
