src/emerge.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20
  21 #include "server.h"
  22 #include <iostream>
  23 #include <queue>
  24 #include "clientserver.h"
  25 #include "map.h"
  26 #include "jmutexautolock.h"
  27 #include "main.h"
  28 #include "constants.h"
  29 #include "voxel.h"
  30 #include "config.h"
  31 #include "mapblock.h"
  32 #include "serverobject.h"
  33 #include "settings.h"
  34 #include "script.h"
  35 #include "scriptapi.h"
  36 #include "profiler.h"
  37 #include "log.h"
  38 #include "nodedef.h"
  39 #include "biome.h"
  40 #include "emerge.h"
  41 #include "mapgen_v6.h"
  42
  43
  44 EmergeManager::EmergeManager(IGameDef *gamedef, BiomeDefManager *bdef) {
  45         //register built-in mapgens
  46         registerMapgen("v6", new MapgenFactoryV6());
  47
  48         this->biomedef = bdef ? bdef : new BiomeDefManager(gamedef);
  49         this->params   = NULL;
  50
  51         mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
  52
  53         queuemutex.Init();
  54
  55         int nthreads;
  56         if (g_settings->get("num_emerge_threads").empty()) {
  57                 int nprocs = porting::getNumberOfProcessors();
  58                 // leave a proc for the main thread and one for some other misc threads
  59                 nthreads =  (nprocs > 2) ? nthreads = nprocs - 2 : 1;
  60         } else {
  61                 nthreads = g_settings->getU16("num_emerge_threads");
  62         }
  63         if (nthreads < 1)
  64                 nthreads = 1;
  65
  66         qlimit_total    = g_settings->getU16("emergequeue_limit_total");
  67         qlimit_diskonly = g_settings->get("emergequeue_limit_diskonly").empty() ?
  68                 nthreads * 5 + 1 :
  69                 g_settings->getU16("emergequeue_limit_diskonly");
  70         qlimit_generate = g_settings->get("emergequeue_limit_generate").empty() ?
  71                 nthreads + 1 :
  72                 g_settings->getU16("emergequeue_limit_generate");
  73
  74         for (int i = 0; i != nthreads; i++)
  75                 emergethread.push_back(new EmergeThread((Server *)gamedef, i));
  76
  77         infostream << "EmergeManager: using " << nthreads << " threads" << std::endl;
  78 }
  79
  80
  81 EmergeManager::~EmergeManager() {
  82         for (int i = 0; i != emergethread.size(); i++) {
  83                 emergethread[i]->setRun(false);
  84                 emergethread[i]->qevent.signal();
  85                 emergethread[i]->stop();
  86                 delete emergethread[i];
  87                 delete mapgen[i];
  88         }
  89
  90         delete biomedef;
  91         delete params;
  92 }
  93
  94
  95 void EmergeManager::initMapgens(MapgenParams *mgparams) {
  96         Mapgen *mg;
  97
  98         if (mapgen.size())
  99                 return;
 100
 101         this->params = mgparams;
 102         for (int i = 0; i != emergethread.size(); i++) {
 103                 mg = createMapgen(params->mg_name, 0, params);
 104                 if (!mg) {
 105                         infostream << "EmergeManager: falling back to mapgen v6" << std::endl;
 106                         delete params;
 107                         params = createMapgenParams("v6");
 108                         mg = createMapgen("v6", 0, params);
 109                 }
 110                 mapgen.push_back(mg);
 111         }
 112 }
 113
 114
 115 bool EmergeManager::enqueueBlockEmerge(u16 peer_id, v3s16 p, bool allow_generate) {
 116         std::map<v3s16, BlockEmergeData *>::const_iterator iter;
 117         BlockEmergeData *bedata;
 118         u16 count;
 119         u8 flags = 0;
 120         int idx = 0;
 121
 122         if (allow_generate)
 123                 flags |= BLOCK_EMERGE_ALLOWGEN;
 124
 125         {
 126                 JMutexAutoLock queuelock(queuemutex);
 127
 128                 count = blocks_enqueued.size();
 129                 if (count >= qlimit_total)
 130                         return false;
 131
 132                 count = peer_queue_count[peer_id];
 133                 u16 qlimit_peer = allow_generate ? qlimit_generate : qlimit_diskonly;
 134                 if (count >= qlimit_peer)
 135                         return false;
 136
 137                 iter = blocks_enqueued.find(p);
 138                 if (iter != blocks_enqueued.end()) {
 139                         bedata = iter->second;
 140                         bedata->flags |= flags;
 141                         return true;
 142                 }
 143
 144                 bedata = new BlockEmergeData;
 145                 bedata->flags = flags;
 146                 bedata->peer_requested = peer_id;
 147                 blocks_enqueued.insert(std::make_pair(p, bedata));
 148
 149                 peer_queue_count[peer_id] = count + 1;
 150
 151                 // insert into the EmergeThread queue with the least items
 152                 int lowestitems = emergethread[0]->blockqueue.size();
 153                 for (int i = 1; i != emergethread.size(); i++) {
 154                         int nitems = emergethread[i]->blockqueue.size();
 155                         if (nitems < lowestitems) {
 156                                 idx = i;
 157                                 lowestitems = nitems;
 158                         }
 159                 }
 160
 161                 emergethread[idx]->blockqueue.push(p);
 162         }
 163         emergethread[idx]->qevent.signal();
 164
 165         return true;
 166 }
 167
 168
 169 bool EmergeThread::popBlockEmerge(v3s16 *pos, u8 *flags) {
 170         std::map<v3s16, BlockEmergeData *>::iterator iter;
 171         JMutexAutoLock queuelock(emerge->queuemutex);
 172
 173         if (blockqueue.empty())
 174                 return false;
 175         v3s16 p = blockqueue.front();
 176         blockqueue.pop();
 177
 178         *pos = p;
 179
 180         iter = emerge->blocks_enqueued.find(p);
 181         if (iter == emerge->blocks_enqueued.end())
 182                 return false; //uh oh, queue and map out of sync!!
 183
 184         BlockEmergeData *bedata = iter->second;
 185         *flags = bedata->flags;
 186
 187         emerge->peer_queue_count[bedata->peer_requested]--;
 188
 189         delete bedata;
 190         emerge->blocks_enqueued.erase(iter);
 191
 192         return true;
 193 }
 194
 195
 196 int EmergeManager::getGroundLevelAtPoint(v2s16 p) {
 197         if (mapgen.size() == 0 || !mapgen[0]) {
 198                 errorstream << "EmergeManager: getGroundLevelAtPoint() called"
 199                 " before mapgen initialized" << std::endl;
 200                 return 0;
 201         }
 202
 203         return mapgen[0]->getGroundLevelAtPoint(p);
 204 }
 205
 206
 207 bool EmergeManager::isBlockUnderground(v3s16 blockpos) {
 208         /*
 209         v2s16 p = v2s16((blockpos.X * MAP_BLOCKSIZE) + MAP_BLOCKSIZE / 2,
 210                                         (blockpos.Y * MAP_BLOCKSIZE) + MAP_BLOCKSIZE / 2);
 211         int ground_level = getGroundLevelAtPoint(p);
 212         return blockpos.Y * (MAP_BLOCKSIZE + 1) <= min(water_level, ground_level);
 213         */
 214
 215         //yuck, but then again, should i bother being accurate?
 216         //the height of the nodes in a single block is quite variable
 217         return blockpos.Y * (MAP_BLOCKSIZE + 1) <= params->water_level;
 218 }
 219
 220
 221 u32 EmergeManager::getBlockSeed(v3s16 p) {
 222         return (u32)(params->seed & 0xFFFFFFFF) +
 223                 p.Z * 38134234 +
 224                 p.Y * 42123 +
 225                 p.X * 23;
 226 }
 227
 228
 229 Mapgen *EmergeManager::createMapgen(std::string mgname, int mgid,
 230                                                                          MapgenParams *mgparams) {
 231         std::map<std::string, MapgenFactory *>::const_iterator iter;
 232         iter = mglist.find(mgname);
 233         if (iter == mglist.end()) {
 234                 errorstream << "EmergeManager; mapgen " << mgname <<
 235                  " not registered" << std::endl;
 236                 return NULL;
 237         }
 238
 239         MapgenFactory *mgfactory = iter->second;
 240         return mgfactory->createMapgen(mgid, mgparams, this);
 241 }
 242
 243
 244 MapgenParams *EmergeManager::createMapgenParams(std::string mgname) {
 245         std::map<std::string, MapgenFactory *>::const_iterator iter;
 246         iter = mglist.find(mgname);
 247         if (iter == mglist.end()) {
 248                 errorstream << "EmergeManager: mapgen " << mgname <<
 249                  " not registered" << std::endl;
 250                 return NULL;
 251         }
 252
 253         MapgenFactory *mgfactory = iter->second;
 254         return mgfactory->createMapgenParams();
 255 }
 256
 257
 258 MapgenParams *EmergeManager::getParamsFromSettings(Settings *settings) {
 259         std::string mg_name = settings->get("mg_name");
 260         MapgenParams *mgparams = createMapgenParams(mg_name);
 261
 262         mgparams->mg_name     = mg_name;
 263         mgparams->seed        = settings->getU64(settings == g_settings ? "fixed_map_seed" : "seed");
 264         mgparams->water_level = settings->getS16("water_level");
 265         mgparams->chunksize   = settings->getS16("chunksize");
 266         mgparams->flags       = settings->getFlagStr("mg_flags", flagdesc_mapgen);
 267
 268         if (!mgparams->readParams(settings)) {
 269                 delete mgparams;
 270                 return NULL;
 271         }
 272         return mgparams;
 273 }
 274
 275
 276 void EmergeManager::setParamsToSettings(Settings *settings) {
 277         settings->set("mg_name",         params->mg_name);
 278         settings->setU64("seed",         params->seed);
 279         settings->setS16("water_level",  params->water_level);
 280         settings->setS16("chunksize",    params->chunksize);
 281         settings->setFlagStr("mg_flags", params->flags, flagdesc_mapgen);
 282
 283         params->writeParams(settings);
 284 }
 285
 286
 287 bool EmergeManager::registerMapgen(std::string mgname, MapgenFactory *mgfactory) {
 288         mglist.insert(std::make_pair(mgname, mgfactory));
 289         infostream << "EmergeManager: registered mapgen " << mgname << std::endl;
 290 }
 291
 292
 293
 294 class MapEditEventIgnorer
 295 {
 296 public:
 297         MapEditEventIgnorer(bool *flag):
 298                 m_flag(flag)
 299         {
 300                 if(*m_flag == false)
 301                         *m_flag = true;
 302                 else
 303                         m_flag = NULL;
 304         }
 305
 306         ~MapEditEventIgnorer()
 307         {
 308                 if(m_flag)
 309                 {
 310                         assert(*m_flag);
 311                         *m_flag = false;
 312                 }
 313         }
 314
 315 private:
 316         bool *m_flag;
 317 };
 318
 319 class MapEditEventAreaIgnorer
 320 {
 321 public:
 322         MapEditEventAreaIgnorer(VoxelArea *ignorevariable, const VoxelArea &a):
 323                 m_ignorevariable(ignorevariable)
 324         {
 325                 if(m_ignorevariable->getVolume() == 0)
 326                         *m_ignorevariable = a;
 327                 else
 328                         m_ignorevariable = NULL;
 329         }
 330
 331         ~MapEditEventAreaIgnorer()
 332         {
 333                 if(m_ignorevariable)
 334                 {
 335                         assert(m_ignorevariable->getVolume() != 0);
 336                         *m_ignorevariable = VoxelArea();
 337                 }
 338         }
 339
 340 private:
 341         VoxelArea *m_ignorevariable;
 342 };
 343
 344
 345 #if 1
 346
 347 bool EmergeThread::getBlockOrStartGen(v3s16 p, MapBlock **b,
 348                                                                         BlockMakeData *data, bool allow_gen) {
 349         v2s16 p2d(p.X, p.Z);
 350         //envlock: usually takes <=1ms, sometimes 90ms or ~400ms to acquire
 351         JMutexAutoLock envlock(m_server->m_env_mutex);
 352
 353         // Load sector if it isn't loaded
 354         if (map->getSectorNoGenerateNoEx(p2d) == NULL)
 355                 map->loadSectorMeta(p2d);
 356
 357         // Attempt to load block
 358         MapBlock *block = map->getBlockNoCreateNoEx(p);
 359         if (!block || block->isDummy() || !block->isGenerated()) {
 360                 EMERGE_DBG_OUT("not in memory, attempting to load from disk");
 361                 block = map->loadBlock(p);
 362         }
 363
 364         // If could not load and allowed to generate,
 365         // start generation inside this same envlock
 366         if (allow_gen && (block == NULL || !block->isGenerated())) {
 367                 EMERGE_DBG_OUT("generating");
 368                 *b = block;
 369                 return map->initBlockMake(data, p);
 370         }
 371
 372         *b = block;
 373         return false;
 374 }
 375
 376
 377 void *EmergeThread::Thread() {
 378         ThreadStarted();
 379         log_register_thread("EmergeThread" + id);
 380         DSTACK(__FUNCTION_NAME);
 381         BEGIN_DEBUG_EXCEPTION_HANDLER
 382
 383         v3s16 last_tried_pos(-32768,-32768,-32768); // For error output
 384         v3s16 p;
 385         u8 flags;
 386
 387         map    = (ServerMap *)&(m_server->m_env->getMap());
 388         emerge = m_server->m_emerge;
 389         mapgen = emerge->mapgen[id];
 390         enable_mapgen_debug_info = emerge->mapgen_debug_info;
 391
 392         while (getRun())
 393         try {
 394                 if (!popBlockEmerge(&p, &flags)) {
 395                         qevent.wait();
 396                         continue;
 397                 }
 398
 399                 last_tried_pos = p;
 400                 if (blockpos_over_limit(p))
 401                         continue;
 402
 403                 bool allow_generate = flags & BLOCK_EMERGE_ALLOWGEN;
 404                 EMERGE_DBG_OUT("p=" PP(p) " allow_generate=" << allow_generate);
 405
 406                 /*
 407                         Try to fetch block from memory or disk.
 408                         If not found and asked to generate, initialize generator.
 409                 */
 410                 BlockMakeData data;
 411                 MapBlock *block = NULL;
 412                 core::map<v3s16, MapBlock *> modified_blocks;
 413
 414                 if (getBlockOrStartGen(p, &block, &data, allow_generate)) {
 415                         {
 416                                 ScopeProfiler sp(g_profiler, "EmergeThread: Mapgen::makeChunk", SPT_AVG);
 417                                 TimeTaker t("mapgen::make_block()");
 418
 419                                 mapgen->makeChunk(&data);
 420
 421                                 if (enable_mapgen_debug_info == false)
 422                                         t.stop(true); // Hide output
 423                         }
 424
 425                         {
 426                                 //envlock: usually 0ms, but can take either 30 or 400ms to acquire
 427                                 JMutexAutoLock envlock(m_server->m_env_mutex);
 428                                 ScopeProfiler sp(g_profiler, "EmergeThread: after "
 429                                                 "Mapgen::makeChunk (envlock)", SPT_AVG);
 430
 431                                 map->finishBlockMake(&data, modified_blocks);
 432
 433                                 block = map->getBlockNoCreateNoEx(p);
 434                                 if (block) {
 435                                         /*
 436                                                 Do some post-generate stuff
 437                                         */
 438                                         v3s16 minp = data.blockpos_min * MAP_BLOCKSIZE;
 439                                         v3s16 maxp = data.blockpos_max * MAP_BLOCKSIZE +
 440                                                                  v3s16(1,1,1) * (MAP_BLOCKSIZE - 1);
 441
 442                                         // Ignore map edit events, they will not need to be sent
 443                                         // to anybody because the block hasn't been sent to anybody
 444                                         MapEditEventAreaIgnorer
 445                                                 ign(&m_server->m_ignore_map_edit_events_area,
 446                                                 VoxelArea(minp, maxp));
 447                                         {  // takes about 90ms with -O1 on an e3-1230v2
 448                                                 scriptapi_environment_on_generated(m_server->m_lua,
 449                                                                 minp, maxp, emerge->getBlockSeed(minp));
 450                                         }
 451
 452                                         EMERGE_DBG_OUT("ended up with: " << analyze_block(block));
 453
 454                                         m_server->m_env->activateBlock(block, 0);
 455                                 }
 456                         }
 457                 }
 458
 459                 /*
 460                         Set sent status of modified blocks on clients
 461                 */
 462
 463                 // NOTE: Server's clients are also behind the connection mutex
 464                 //conlock: consistently takes 30-40ms to acquire
 465                 JMutexAutoLock lock(m_server->m_con_mutex);
 466                 // Add the originally fetched block to the modified list
 467                 if (block)
 468                         modified_blocks.insert(p, block);
 469
 470                 // Set the modified blocks unsent for all the clients
 471                 for (core::map<u16, RemoteClient*>::Iterator
 472                          i = m_server->m_clients.getIterator();
 473                          i.atEnd() == false; i++) {
 474                         RemoteClient *client = i.getNode()->getValue();
 475                         if (modified_blocks.size() > 0) {
 476                                 // Remove block from sent history
 477                                 client->SetBlocksNotSent(modified_blocks);
 478                         }
 479                 }
 480         }
 481         catch (VersionMismatchException &e) {
 482                 std::ostringstream err;
 483                 err << "World data version mismatch in MapBlock "<<PP(last_tried_pos)<<std::endl;
 484                 err << "----"<<std::endl;
 485                 err << "\""<<e.what()<<"\""<<std::endl;
 486                 err << "See debug.txt."<<std::endl;
 487                 err << "World probably saved by a newer version of Minetest."<<std::endl;
 488                 m_server->setAsyncFatalError(err.str());
 489         }
 490         catch (SerializationError &e) {
 491                 std::ostringstream err;
 492                 err << "Invalid data in MapBlock "<<PP(last_tried_pos)<<std::endl;
 493                 err << "----"<<std::endl;
 494                 err << "\""<<e.what()<<"\""<<std::endl;
 495                 err << "See debug.txt."<<std::endl;
 496                 err << "You can ignore this using [ignore_world_load_errors = true]."<<std::endl;
 497                 m_server->setAsyncFatalError(err.str());
 498         }
 499
 500         END_DEBUG_EXCEPTION_HANDLER(errorstream)
 501         log_deregister_thread();
 502         return NULL;
 503 }
 504
 505 #else
 506
 507 void *EmergeThread::Thread() {
 508         ThreadStarted();
 509         log_register_thread("EmergeThread");
 510         DSTACK(__FUNCTION_NAME);
 511         BEGIN_DEBUG_EXCEPTION_HANDLER
 512
 513         bool enable_mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
 514
 515         v3s16 last_tried_pos(-32768,-32768,-32768); // For error output
 516         ServerMap &map = ((ServerMap&)m_server->m_env->getMap());
 517         EmergeManager *emerge = m_server->m_emerge;
 518         Mapgen *mapgen = emerge->getMapgen();
 519
 520         while(getRun())
 521         try {
 522                 QueuedBlockEmerge *qptr = m_server->m_emerge_queue.pop();
 523                 if(qptr == NULL)
 524                         break;
 525                 SharedPtr<QueuedBlockEmerge> q(qptr);
 526
 527                 v3s16 &p = q->pos;
 528                 v2s16 p2d(p.X,p.Z);
 529
 530                 last_tried_pos = p;
 531
 532                 /*
 533                         Do not generate over-limit
 534                 */
 535                 if (blockpos_over_limit(p))
 536                         continue;
 537
 538                 //infostream<<"EmergeThread::Thread(): running"<<std::endl;
 539
 540                 //TimeTaker timer("block emerge");
 541
 542                 /*
 543                         Try to emerge it from somewhere.
 544
 545                         If it is only wanted as optional, only loading from disk
 546                         will be allowed.
 547                 */
 548
 549                 /*
 550                         Check if any peer wants it as non-optional. In that case it
 551                         will be generated.
 552
 553                         Also decrement the emerge queue count in clients.
 554                 */
 555
 556                 bool only_from_disk = true;
 557                 {
 558                         core::map<u16, u8>::Iterator i;
 559                         for (i=q->s.getIterator(); !i.atEnd(); i++) {
 560                                 u8 flags = i.getNode()->getValue();
 561                                 if (!(flags & BLOCK_EMERGE_FLAG_FROMDISK)) {
 562                                         only_from_disk = false;
 563                                         break;
 564                                 }
 565                         }
 566                 }
 567
 568                 if (enable_mapgen_debug_info)
 569                         infostream<<"EmergeThread: p="
 570                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
 571                                         <<"only_from_disk="<<only_from_disk<<std::endl;
 572
 573                 MapBlock *block = NULL;
 574                 bool got_block = true;
 575                 core::map<v3s16, MapBlock*> modified_blocks;
 576
 577                 /*
 578                         Try to fetch block from memory or disk.
 579                         If not found and asked to generate, initialize generator.
 580                 */
 581
 582                 bool started_generate = false;
 583                 BlockMakeData data;
 584                 {
 585                         JMutexAutoLock envlock(m_server->m_env_mutex);
 586
 587                         // Load sector if it isn't loaded
 588                         if(map.getSectorNoGenerateNoEx(p2d) == NULL)
 589                                 map.loadSectorMeta(p2d);
 590
 591                         // Attempt to load block
 592                         block = map.getBlockNoCreateNoEx(p);
 593                         if(!block || block->isDummy() || !block->isGenerated()) {
 594                                 if(enable_mapgen_debug_info)
 595                                         infostream<<"EmergeThread: not in memory, "
 596                                                         <<"attempting to load from disk"<<std::endl;
 597
 598                                 block = map.loadBlock(p);
 599                         }
 600
 601                         // If could not load and allowed to generate, start generation
 602                         // inside this same envlock
 603                         if(only_from_disk == false &&
 604                                         (block == NULL || block->isGenerated() == false)){
 605                                 if(enable_mapgen_debug_info)
 606                                         infostream<<"EmergeThread: generating"<<std::endl;
 607                                 started_generate = true;
 608
 609                                 map.initBlockMake(&data, p);
 610                         }
 611                 }
 612
 613                 /*
 614                         If generator was initialized, generate now when envlock is free.
 615                 */
 616                 if(started_generate) {
 617                         {
 618                                 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen::make_block",
 619                                                 SPT_AVG);
 620                                 TimeTaker t("mapgen::make_block()");
 621
 622                                 mapgen->makeChunk(&data);
 623
 624                                 if (enable_mapgen_debug_info == false)
 625                                         t.stop(true); // Hide output
 626                         }
 627
 628                         do{ // enable break
 629                                 // Lock environment again to access the map
 630                                 JMutexAutoLock envlock(m_server->m_env_mutex);
 631
 632                                 ScopeProfiler sp(g_profiler, "EmergeThread: after "
 633                                                 "mapgen::make_block (envlock)", SPT_AVG);
 634
 635                                 // Blit data back on map, update lighting, add mobs and
 636                                 // whatever this does
 637                                 map.finishBlockMake(&data, modified_blocks);
 638
 639                                 // Get central block
 640                                 block = map.getBlockNoCreateNoEx(p);
 641
 642                                 // If block doesn't exist, don't try doing anything with it
 643                                 // This happens if the block is not in generation boundaries
 644                                 if(!block)
 645                                         break;
 646
 647                                 /*
 648                                         Do some post-generate stuff
 649                                 */
 650                                 v3s16 minp = data.blockpos_min * MAP_BLOCKSIZE;
 651                                 v3s16 maxp = data.blockpos_max * MAP_BLOCKSIZE +
 652                                                 v3s16(1,1,1) * (MAP_BLOCKSIZE - 1);
 653
 654                                 /*
 655                                         Ignore map edit events, they will not need to be
 656                                         sent to anybody because the block hasn't been sent
 657                                         to anybody
 658                                 */
 659                                 MapEditEventAreaIgnorer ign(
 660                                                 &m_server->m_ignore_map_edit_events_area,
 661                                                 VoxelArea(minp, maxp));
 662                                 {
 663                                         TimeTaker timer("on_generated");
 664                                         scriptapi_environment_on_generated(m_server->m_lua,
 665                                                         minp, maxp, emerge->getBlockSeed(minp));
 666                                         //int t = timer.stop(true);
 667                                         //dstream<<"on_generated took "<<t<<"ms"<<std::endl;
 668                                 }
 669
 670                                 if (enable_mapgen_debug_info)
 671                                         infostream << "EmergeThread: ended up with: "
 672                                                         << analyze_block(block) << std::endl;
 673
 674                                 // Activate objects and stuff
 675                                 m_server->m_env->activateBlock(block, 0);
 676                         }while(false);
 677                 }
 678
 679                 if(block == NULL)
 680                         got_block = false;
 681
 682                 /*
 683                         Set sent status of modified blocks on clients
 684                 */
 685
 686                 // NOTE: Server's clients are also behind the connection mutex
 687                 JMutexAutoLock lock(m_server->m_con_mutex);
 688
 689                 /*
 690                         Add the originally fetched block to the modified list
 691                 */
 692                 if(got_block)
 693                         modified_blocks.insert(p, block);
 694
 695                 /*
 696                         Set the modified blocks unsent for all the clients
 697                 */
 698                 for(core::map<u16, RemoteClient*>::Iterator
 699                                 i = m_server->m_clients.getIterator();
 700                                 i.atEnd() == false; i++) {
 701                         RemoteClient *client = i.getNode()->getValue();
 702                         if(modified_blocks.size() > 0) {
 703                                 // Remove block from sent history
 704                                 client->SetBlocksNotSent(modified_blocks);
 705                         }
 706                 }
 707
 708
 709 niters++;
 710         }
 711         catch (VersionMismatchException &e) {
 712                 std::ostringstream err;
 713                 err << "World data version mismatch in MapBlock "<<PP(last_tried_pos)<<std::endl;
 714                 err << "----"<<std::endl;
 715                 err << "\""<<e.what()<<"\""<<std::endl;
 716                 err << "See debug.txt."<<std::endl;
 717                 err << "World probably saved by a newer version of Minetest."<<std::endl;
 718                 m_server->setAsyncFatalError(err.str());
 719         }
 720         catch (SerializationError &e) {
 721                 std::ostringstream err;
 722                 err << "Invalid data in MapBlock "<<PP(last_tried_pos)<<std::endl;
 723                 err << "----"<<std::endl;
 724                 err << "\""<<e.what()<<"\""<<std::endl;
 725                 err << "See debug.txt."<<std::endl;
 726                 err << "You can ignore this using [ignore_world_load_errors = true]."<<std::endl;
 727                 m_server->setAsyncFatalError(err.str());
 728         }
 729 printf("emergethread iterated %d times\n", niters);
 730         END_DEBUG_EXCEPTION_HANDLER(errorstream)
 731         log_deregister_thread();
 732         return NULL;
 733 }
 734
 735 #endif