// find_node_near(pos, radius, nodenames) -> pos or nil
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_node_near(lua_State *L)
{
GET_ENV_PTR;
INodeDefManager *ndef = getServer(L)->ndef();
v3s16 pos = read_v3s16(L, 1);
int radius = luaL_checkinteger(L, 2);
std::set<content_t> filter;
if(lua_istable(L, 3)){
int table = 3;
lua_pushnil(L);
while(lua_next(L, table) != 0){
// key at index -2 and value at index -1
luaL_checktype(L, -1, LUA_TSTRING);
ndef->getIds(lua_tostring(L, -1), filter);
// removes value, keeps key for next iteration
lua_pop(L, 1);
}
} else if(lua_isstring(L, 3)){
ndef->getIds(lua_tostring(L, 3), filter);
}
for(int d=1; d<=radius; d++){
std::list<v3s16> list;
getFacePositions(list, d);
for(std::list<v3s16>::iterator i = list.begin();
i != list.end(); ++i){
v3s16 p = pos + (*i);
content_t c = env->getMap().getNodeNoEx(p).getContent();
if(filter.count(c) != 0){
push_v3s16(L, p);
return 1;
}
}
}
return 0;
}
int RemoteClient::GetNextBlocks(
ServerEnvironment *env,
EmergeManager * emerge,
float dtime,
double m_uptime,
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 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.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 > 120.0)
{
m_nearest_unsent_reset_timer = 0;
m_nearest_unsent_d = 0;
m_nearest_unsent_nearest = 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;
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 = 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;
s16 full_d_max = g_settings->getS16("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;
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 = 5;
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();
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;
/*
If m_nearest_unsent_d was changed by the EmergeThread
(it can change it to 0 through SetBlockNotSent),
update our d to it.
Else update m_nearest_unsent_d
*/
/*if(m_nearest_unsent_d != last_nearest_unsent_d)
{
d = m_nearest_unsent_d;
last_nearest_unsent_d = m_nearest_unsent_d;
}*/
std::list<v3s16> list;
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) + v3s16( 0, 0, 1)); // back
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3s16( -1, 0, 0)); // left
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3s16( 1, 0, 0)); // right
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3s16( 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) + v3s16( -1, 0, 1)); // back left
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3s16( 1, 0, 1)); // left right
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3s16( -1, 0, -1)); // right left
list.push_back(floatToInt(playerspeeddir*addn, 1) + v3s16( 1, 0, -1)); // front right
}
}
} else {
/*
Get the border/face dot coordinates of a "d-radiused"
box
*/
getFacePositions(list, d);
}
std::list<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+num_blocks_sending >= max_simul_dynamic)
{
queue_is_full = true;
goto queue_full_break;
}
/*
Do not go over-limit
*/
if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
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 = (80.0*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
*/
{
if(m_blocks_sent.find(p) != m_blocks_sent.end() && m_blocks_sent[p] > 0 && m_blocks_sent[p] + (d <= 2 ? 1 : d*d*d) > m_uptime) {
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)
{
if (m_blocks_sent[p] > 0 && m_blocks_sent[p] >= block->m_changed_timestamp) {
continue;
}
// 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;
}
if (block->getLightingExpired()) {
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 <<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 = 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;
return num_blocks_selected - num_blocks_sending;
}
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::list<v3s16> list;
getFacePositions(list, d);
std::list<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(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
|| p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
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;
}
