src/map.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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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 #include "map.h"
  21 #include "mapsector.h"
  22 #include "mapblock.h"
  23 #include "main.h"
  24 #include "client.h"
  25 #include "filesys.h"
  26 #include "utility.h"
  27 #include "voxel.h"
  28 #include "porting.h"
  29 #include "mapgen.h"
  30 #include "nodemetadata.h"
  31
  32 extern "C" {
  33         #include "sqlite3.h"
  34 }
  35 /*
  36         SQLite format specification:
  37         - Initially only replaces sectors/ and sectors2/
  38 */
  39
  40 /*
  41         Map
  42 */
  43
  44 Map::Map(std::ostream &dout):
  45         m_dout(dout),
  46         m_sector_cache(NULL)
  47 {
  48         /*m_sector_mutex.Init();
  49         assert(m_sector_mutex.IsInitialized());*/
  50 }
  51
  52 Map::~Map()
  53 {
  54         /*
  55                 Free all MapSectors
  56         */
  57         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
  58         for(; i.atEnd() == false; i++)
  59         {
  60                 MapSector *sector = i.getNode()->getValue();
  61                 delete sector;
  62         }
  63 }
  64
  65 void Map::addEventReceiver(MapEventReceiver *event_receiver)
  66 {
  67         m_event_receivers.insert(event_receiver, false);
  68 }
  69
  70 void Map::removeEventReceiver(MapEventReceiver *event_receiver)
  71 {
  72         if(m_event_receivers.find(event_receiver) == NULL)
  73                 return;
  74         m_event_receivers.remove(event_receiver);
  75 }
  76
  77 void Map::dispatchEvent(MapEditEvent *event)
  78 {
  79         for(core::map<MapEventReceiver*, bool>::Iterator
  80                         i = m_event_receivers.getIterator();
  81                         i.atEnd()==false; i++)
  82         {
  83                 MapEventReceiver* event_receiver = i.getNode()->getKey();
  84                 event_receiver->onMapEditEvent(event);
  85         }
  86 }
  87
  88 MapSector * Map::getSectorNoGenerateNoExNoLock(v2s16 p)
  89 {
  90         if(m_sector_cache != NULL && p == m_sector_cache_p){
  91                 MapSector * sector = m_sector_cache;
  92                 return sector;
  93         }
  94
  95         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p);
  96
  97         if(n == NULL)
  98                 return NULL;
  99
 100         MapSector *sector = n->getValue();
 101
 102         // Cache the last result
 103         m_sector_cache_p = p;
 104         m_sector_cache = sector;
 105
 106         return sector;
 107 }
 108
 109 MapSector * Map::getSectorNoGenerateNoEx(v2s16 p)
 110 {
 111         return getSectorNoGenerateNoExNoLock(p);
 112 }
 113
 114 MapSector * Map::getSectorNoGenerate(v2s16 p)
 115 {
 116         MapSector *sector = getSectorNoGenerateNoEx(p);
 117         if(sector == NULL)
 118                 throw InvalidPositionException();
 119
 120         return sector;
 121 }
 122
 123 MapBlock * Map::getBlockNoCreateNoEx(v3s16 p3d)
 124 {
 125         v2s16 p2d(p3d.X, p3d.Z);
 126         MapSector * sector = getSectorNoGenerateNoEx(p2d);
 127         if(sector == NULL)
 128                 return NULL;
 129         MapBlock *block = sector->getBlockNoCreateNoEx(p3d.Y);
 130         return block;
 131 }
 132
 133 MapBlock * Map::getBlockNoCreate(v3s16 p3d)
 134 {
 135         MapBlock *block = getBlockNoCreateNoEx(p3d);
 136         if(block == NULL)
 137                 throw InvalidPositionException();
 138         return block;
 139 }
 140
 141 bool Map::isNodeUnderground(v3s16 p)
 142 {
 143         v3s16 blockpos = getNodeBlockPos(p);
 144         try{
 145                 MapBlock * block = getBlockNoCreate(blockpos);
 146                 return block->getIsUnderground();
 147         }
 148         catch(InvalidPositionException &e)
 149         {
 150                 return false;
 151         }
 152 }
 153
 154 bool Map::isValidPosition(v3s16 p)
 155 {
 156         v3s16 blockpos = getNodeBlockPos(p);
 157         MapBlock *block = getBlockNoCreate(blockpos);
 158         return (block != NULL);
 159 }
 160
 161 // Returns a CONTENT_IGNORE node if not found
 162 MapNode Map::getNodeNoEx(v3s16 p)
 163 {
 164         v3s16 blockpos = getNodeBlockPos(p);
 165         MapBlock *block = getBlockNoCreateNoEx(blockpos);
 166         if(block == NULL)
 167                 return MapNode(CONTENT_IGNORE);
 168         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 169         return block->getNodeNoCheck(relpos);
 170 }
 171
 172 // throws InvalidPositionException if not found
 173 MapNode Map::getNode(v3s16 p)
 174 {
 175         v3s16 blockpos = getNodeBlockPos(p);
 176         MapBlock *block = getBlockNoCreateNoEx(blockpos);
 177         if(block == NULL)
 178                 throw InvalidPositionException();
 179         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 180         return block->getNodeNoCheck(relpos);
 181 }
 182
 183 // throws InvalidPositionException if not found
 184 void Map::setNode(v3s16 p, MapNode & n)
 185 {
 186         v3s16 blockpos = getNodeBlockPos(p);
 187         MapBlock *block = getBlockNoCreate(blockpos);
 188         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 189         block->setNodeNoCheck(relpos, n);
 190 }
 191
 192
 193 /*
 194         Goes recursively through the neighbours of the node.
 195
 196         Alters only transparent nodes.
 197
 198         If the lighting of the neighbour is lower than the lighting of
 199         the node was (before changing it to 0 at the step before), the
 200         lighting of the neighbour is set to 0 and then the same stuff
 201         repeats for the neighbour.
 202
 203         The ending nodes of the routine are stored in light_sources.
 204         This is useful when a light is removed. In such case, this
 205         routine can be called for the light node and then again for
 206         light_sources to re-light the area without the removed light.
 207
 208         values of from_nodes are lighting values.
 209 */
 210 void Map::unspreadLight(enum LightBank bank,
 211                 core::map<v3s16, u8> & from_nodes,
 212                 core::map<v3s16, bool> & light_sources,
 213                 core::map<v3s16, MapBlock*>  & modified_blocks)
 214 {
 215         v3s16 dirs[6] = {
 216                 v3s16(0,0,1), // back
 217                 v3s16(0,1,0), // top
 218                 v3s16(1,0,0), // right
 219                 v3s16(0,0,-1), // front
 220                 v3s16(0,-1,0), // bottom
 221                 v3s16(-1,0,0), // left
 222         };
 223
 224         if(from_nodes.size() == 0)
 225                 return;
 226
 227         u32 blockchangecount = 0;
 228
 229         core::map<v3s16, u8> unlighted_nodes;
 230         core::map<v3s16, u8>::Iterator j;
 231         j = from_nodes.getIterator();
 232
 233         /*
 234                 Initialize block cache
 235         */
 236         v3s16 blockpos_last;
 237         MapBlock *block = NULL;
 238         // Cache this a bit, too
 239         bool block_checked_in_modified = false;
 240
 241         for(; j.atEnd() == false; j++)
 242         {
 243                 v3s16 pos = j.getNode()->getKey();
 244                 v3s16 blockpos = getNodeBlockPos(pos);
 245
 246                 // Only fetch a new block if the block position has changed
 247                 try{
 248                         if(block == NULL || blockpos != blockpos_last){
 249                                 block = getBlockNoCreate(blockpos);
 250                                 blockpos_last = blockpos;
 251
 252                                 block_checked_in_modified = false;
 253                                 blockchangecount++;
 254                         }
 255                 }
 256                 catch(InvalidPositionException &e)
 257                 {
 258                         continue;
 259                 }
 260
 261                 if(block->isDummy())
 262                         continue;
 263
 264                 // Calculate relative position in block
 265                 v3s16 relpos = pos - blockpos_last * MAP_BLOCKSIZE;
 266
 267                 // Get node straight from the block
 268                 MapNode n = block->getNode(relpos);
 269
 270                 u8 oldlight = j.getNode()->getValue();
 271
 272                 // Loop through 6 neighbors
 273                 for(u16 i=0; i<6; i++)
 274                 {
 275                         // Get the position of the neighbor node
 276                         v3s16 n2pos = pos + dirs[i];
 277
 278                         // Get the block where the node is located
 279                         v3s16 blockpos = getNodeBlockPos(n2pos);
 280
 281                         try
 282                         {
 283                                 // Only fetch a new block if the block position has changed
 284                                 try{
 285                                         if(block == NULL || blockpos != blockpos_last){
 286                                                 block = getBlockNoCreate(blockpos);
 287                                                 blockpos_last = blockpos;
 288
 289                                                 block_checked_in_modified = false;
 290                                                 blockchangecount++;
 291                                         }
 292                                 }
 293                                 catch(InvalidPositionException &e)
 294                                 {
 295                                         continue;
 296                                 }
 297
 298                                 // Calculate relative position in block
 299                                 v3s16 relpos = n2pos - blockpos * MAP_BLOCKSIZE;
 300                                 // Get node straight from the block
 301                                 MapNode n2 = block->getNode(relpos);
 302
 303                                 bool changed = false;
 304
 305                                 //TODO: Optimize output by optimizing light_sources?
 306
 307                                 /*
 308                                         If the neighbor is dimmer than what was specified
 309                                         as oldlight (the light of the previous node)
 310                                 */
 311                                 if(n2.getLight(bank) < oldlight)
 312                                 {
 313                                         /*
 314                                                 And the neighbor is transparent and it has some light
 315                                         */
 316                                         if(n2.light_propagates() && n2.getLight(bank) != 0)
 317                                         {
 318                                                 /*
 319                                                         Set light to 0 and add to queue
 320                                                 */
 321
 322                                                 u8 current_light = n2.getLight(bank);
 323                                                 n2.setLight(bank, 0);
 324                                                 block->setNode(relpos, n2);
 325
 326                                                 unlighted_nodes.insert(n2pos, current_light);
 327                                                 changed = true;
 328
 329                                                 /*
 330                                                         Remove from light_sources if it is there
 331                                                         NOTE: This doesn't happen nearly at all
 332                                                 */
 333                                                 /*if(light_sources.find(n2pos))
 334                                                 {
 335                                                         std::cout<<"Removed from light_sources"<<std::endl;
 336                                                         light_sources.remove(n2pos);
 337                                                 }*/
 338                                         }
 339
 340                                         /*// DEBUG
 341                                         if(light_sources.find(n2pos) != NULL)
 342                                                 light_sources.remove(n2pos);*/
 343                                 }
 344                                 else{
 345                                         light_sources.insert(n2pos, true);
 346                                 }
 347
 348                                 // Add to modified_blocks
 349                                 if(changed == true && block_checked_in_modified == false)
 350                                 {
 351                                         // If the block is not found in modified_blocks, add.
 352                                         if(modified_blocks.find(blockpos) == NULL)
 353                                         {
 354                                                 modified_blocks.insert(blockpos, block);
 355                                         }
 356                                         block_checked_in_modified = true;
 357                                 }
 358                         }
 359                         catch(InvalidPositionException &e)
 360                         {
 361                                 continue;
 362                         }
 363                 }
 364         }
 365
 366         /*dstream<<"unspreadLight(): Changed block "
 367                         <<blockchangecount<<" times"
 368                         <<" for "<<from_nodes.size()<<" nodes"
 369                         <<std::endl;*/
 370
 371         if(unlighted_nodes.size() > 0)
 372                 unspreadLight(bank, unlighted_nodes, light_sources, modified_blocks);
 373 }
 374
 375 /*
 376         A single-node wrapper of the above
 377 */
 378 void Map::unLightNeighbors(enum LightBank bank,
 379                 v3s16 pos, u8 lightwas,
 380                 core::map<v3s16, bool> & light_sources,
 381                 core::map<v3s16, MapBlock*>  & modified_blocks)
 382 {
 383         core::map<v3s16, u8> from_nodes;
 384         from_nodes.insert(pos, lightwas);
 385
 386         unspreadLight(bank, from_nodes, light_sources, modified_blocks);
 387 }
 388
 389 /*
 390         Lights neighbors of from_nodes, collects all them and then
 391         goes on recursively.
 392 */
 393 void Map::spreadLight(enum LightBank bank,
 394                 core::map<v3s16, bool> & from_nodes,
 395                 core::map<v3s16, MapBlock*> & modified_blocks)
 396 {
 397         const v3s16 dirs[6] = {
 398                 v3s16(0,0,1), // back
 399                 v3s16(0,1,0), // top
 400                 v3s16(1,0,0), // right
 401                 v3s16(0,0,-1), // front
 402                 v3s16(0,-1,0), // bottom
 403                 v3s16(-1,0,0), // left
 404         };
 405
 406         if(from_nodes.size() == 0)
 407                 return;
 408
 409         u32 blockchangecount = 0;
 410
 411         core::map<v3s16, bool> lighted_nodes;
 412         core::map<v3s16, bool>::Iterator j;
 413         j = from_nodes.getIterator();
 414
 415         /*
 416                 Initialize block cache
 417         */
 418         v3s16 blockpos_last;
 419         MapBlock *block = NULL;
 420         // Cache this a bit, too
 421         bool block_checked_in_modified = false;
 422
 423         for(; j.atEnd() == false; j++)
 424         //for(; j != from_nodes.end(); j++)
 425         {
 426                 v3s16 pos = j.getNode()->getKey();
 427                 //v3s16 pos = *j;
 428                 //dstream<<"pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"<<std::endl;
 429                 v3s16 blockpos = getNodeBlockPos(pos);
 430
 431                 // Only fetch a new block if the block position has changed
 432                 try{
 433                         if(block == NULL || blockpos != blockpos_last){
 434                                 block = getBlockNoCreate(blockpos);
 435                                 blockpos_last = blockpos;
 436
 437                                 block_checked_in_modified = false;
 438                                 blockchangecount++;
 439                         }
 440                 }
 441                 catch(InvalidPositionException &e)
 442                 {
 443                         continue;
 444                 }
 445
 446                 if(block->isDummy())
 447                         continue;
 448
 449                 // Calculate relative position in block
 450                 v3s16 relpos = pos - blockpos_last * MAP_BLOCKSIZE;
 451
 452                 // Get node straight from the block
 453                 MapNode n = block->getNode(relpos);
 454
 455                 u8 oldlight = n.getLight(bank);
 456                 u8 newlight = diminish_light(oldlight);
 457
 458                 // Loop through 6 neighbors
 459                 for(u16 i=0; i<6; i++){
 460                         // Get the position of the neighbor node
 461                         v3s16 n2pos = pos + dirs[i];
 462
 463                         // Get the block where the node is located
 464                         v3s16 blockpos = getNodeBlockPos(n2pos);
 465
 466                         try
 467                         {
 468                                 // Only fetch a new block if the block position has changed
 469                                 try{
 470                                         if(block == NULL || blockpos != blockpos_last){
 471                                                 block = getBlockNoCreate(blockpos);
 472                                                 blockpos_last = blockpos;
 473
 474                                                 block_checked_in_modified = false;
 475                                                 blockchangecount++;
 476                                         }
 477                                 }
 478                                 catch(InvalidPositionException &e)
 479                                 {
 480                                         continue;
 481                                 }
 482
 483                                 // Calculate relative position in block
 484                                 v3s16 relpos = n2pos - blockpos * MAP_BLOCKSIZE;
 485                                 // Get node straight from the block
 486                                 MapNode n2 = block->getNode(relpos);
 487
 488                                 bool changed = false;
 489                                 /*
 490                                         If the neighbor is brighter than the current node,
 491                                         add to list (it will light up this node on its turn)
 492                                 */
 493                                 if(n2.getLight(bank) > undiminish_light(oldlight))
 494                                 {
 495                                         lighted_nodes.insert(n2pos, true);
 496                                         //lighted_nodes.push_back(n2pos);
 497                                         changed = true;
 498                                 }
 499                                 /*
 500                                         If the neighbor is dimmer than how much light this node
 501                                         would spread on it, add to list
 502                                 */
 503                                 if(n2.getLight(bank) < newlight)
 504                                 {
 505                                         if(n2.light_propagates())
 506                                         {
 507                                                 n2.setLight(bank, newlight);
 508                                                 block->setNode(relpos, n2);
 509                                                 lighted_nodes.insert(n2pos, true);
 510                                                 //lighted_nodes.push_back(n2pos);
 511                                                 changed = true;
 512                                         }
 513                                 }
 514
 515                                 // Add to modified_blocks
 516                                 if(changed == true && block_checked_in_modified == false)
 517                                 {
 518                                         // If the block is not found in modified_blocks, add.
 519                                         if(modified_blocks.find(blockpos) == NULL)
 520                                         {
 521                                                 modified_blocks.insert(blockpos, block);
 522                                         }
 523                                         block_checked_in_modified = true;
 524                                 }
 525                         }
 526                         catch(InvalidPositionException &e)
 527                         {
 528                                 continue;
 529                         }
 530                 }
 531         }
 532
 533         /*dstream<<"spreadLight(): Changed block "
 534                         <<blockchangecount<<" times"
 535                         <<" for "<<from_nodes.size()<<" nodes"
 536                         <<std::endl;*/
 537
 538         if(lighted_nodes.size() > 0)
 539                 spreadLight(bank, lighted_nodes, modified_blocks);
 540 }
 541
 542 /*
 543         A single-node source variation of the above.
 544 */
 545 void Map::lightNeighbors(enum LightBank bank,
 546                 v3s16 pos,
 547                 core::map<v3s16, MapBlock*> & modified_blocks)
 548 {
 549         core::map<v3s16, bool> from_nodes;
 550         from_nodes.insert(pos, true);
 551         spreadLight(bank, from_nodes, modified_blocks);
 552 }
 553
 554 v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
 555 {
 556         v3s16 dirs[6] = {
 557                 v3s16(0,0,1), // back
 558                 v3s16(0,1,0), // top
 559                 v3s16(1,0,0), // right
 560                 v3s16(0,0,-1), // front
 561                 v3s16(0,-1,0), // bottom
 562                 v3s16(-1,0,0), // left
 563         };
 564
 565         u8 brightest_light = 0;
 566         v3s16 brightest_pos(0,0,0);
 567         bool found_something = false;
 568
 569         // Loop through 6 neighbors
 570         for(u16 i=0; i<6; i++){
 571                 // Get the position of the neighbor node
 572                 v3s16 n2pos = p + dirs[i];
 573                 MapNode n2;
 574                 try{
 575                         n2 = getNode(n2pos);
 576                 }
 577                 catch(InvalidPositionException &e)
 578                 {
 579                         continue;
 580                 }
 581                 if(n2.getLight(bank) > brightest_light || found_something == false){
 582                         brightest_light = n2.getLight(bank);
 583                         brightest_pos = n2pos;
 584                         found_something = true;
 585                 }
 586         }
 587
 588         if(found_something == false)
 589                 throw InvalidPositionException();
 590
 591         return brightest_pos;
 592 }
 593
 594 /*
 595         Propagates sunlight down from a node.
 596         Starting point gets sunlight.
 597
 598         Returns the lowest y value of where the sunlight went.
 599
 600         Mud is turned into grass in where the sunlight stops.
 601 */
 602 s16 Map::propagateSunlight(v3s16 start,
 603                 core::map<v3s16, MapBlock*> & modified_blocks)
 604 {
 605         s16 y = start.Y;
 606         for(; ; y--)
 607         {
 608                 v3s16 pos(start.X, y, start.Z);
 609
 610                 v3s16 blockpos = getNodeBlockPos(pos);
 611                 MapBlock *block;
 612                 try{
 613                         block = getBlockNoCreate(blockpos);
 614                 }
 615                 catch(InvalidPositionException &e)
 616                 {
 617                         break;
 618                 }
 619
 620                 v3s16 relpos = pos - blockpos*MAP_BLOCKSIZE;
 621                 MapNode n = block->getNode(relpos);
 622
 623                 if(n.sunlight_propagates())
 624                 {
 625                         n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 626                         block->setNode(relpos, n);
 627
 628                         modified_blocks.insert(blockpos, block);
 629                 }
 630                 else
 631                 {
 632                         /*// Turn mud into grass
 633                         if(n.d == CONTENT_MUD)
 634                         {
 635                                 n.d = CONTENT_GRASS;
 636                                 block->setNode(relpos, n);
 637                                 modified_blocks.insert(blockpos, block);
 638                         }*/
 639
 640                         // Sunlight goes no further
 641                         break;
 642                 }
 643         }
 644         return y + 1;
 645 }
 646
 647 void Map::updateLighting(enum LightBank bank,
 648                 core::map<v3s16, MapBlock*> & a_blocks,
 649                 core::map<v3s16, MapBlock*> & modified_blocks)
 650 {
 651         /*m_dout<<DTIME<<"Map::updateLighting(): "
 652                         <<a_blocks.size()<<" blocks."<<std::endl;*/
 653
 654         //TimeTaker timer("updateLighting");
 655
 656         // For debugging
 657         //bool debug=true;
 658         //u32 count_was = modified_blocks.size();
 659
 660         core::map<v3s16, MapBlock*> blocks_to_update;
 661
 662         core::map<v3s16, bool> light_sources;
 663
 664         core::map<v3s16, u8> unlight_from;
 665
 666         core::map<v3s16, MapBlock*>::Iterator i;
 667         i = a_blocks.getIterator();
 668         for(; i.atEnd() == false; i++)
 669         {
 670                 MapBlock *block = i.getNode()->getValue();
 671
 672                 for(;;)
 673                 {
 674                         // Don't bother with dummy blocks.
 675                         if(block->isDummy())
 676                                 break;
 677
 678                         v3s16 pos = block->getPos();
 679                         modified_blocks.insert(pos, block);
 680
 681                         blocks_to_update.insert(pos, block);
 682
 683                         /*
 684                                 Clear all light from block
 685                         */
 686                         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 687                         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 688                         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 689                         {
 690
 691                                 try{
 692                                         v3s16 p(x,y,z);
 693                                         MapNode n = block->getNode(v3s16(x,y,z));
 694                                         u8 oldlight = n.getLight(bank);
 695                                         n.setLight(bank, 0);
 696                                         block->setNode(v3s16(x,y,z), n);
 697
 698                                         // Collect borders for unlighting
 699                                         if(x==0 || x == MAP_BLOCKSIZE-1
 700                                         || y==0 || y == MAP_BLOCKSIZE-1
 701                                         || z==0 || z == MAP_BLOCKSIZE-1)
 702                                         {
 703                                                 v3s16 p_map = p + v3s16(
 704                                                                 MAP_BLOCKSIZE*pos.X,
 705                                                                 MAP_BLOCKSIZE*pos.Y,
 706                                                                 MAP_BLOCKSIZE*pos.Z);
 707                                                 unlight_from.insert(p_map, oldlight);
 708                                         }
 709                                 }
 710                                 catch(InvalidPositionException &e)
 711                                 {
 712                                         /*
 713                                                 This would happen when dealing with a
 714                                                 dummy block.
 715                                         */
 716                                         //assert(0);
 717                                         dstream<<"updateLighting(): InvalidPositionException"
 718                                                         <<std::endl;
 719                                 }
 720                         }
 721
 722                         if(bank == LIGHTBANK_DAY)
 723                         {
 724                                 bool bottom_valid = block->propagateSunlight(light_sources);
 725
 726                                 // If bottom is valid, we're done.
 727                                 if(bottom_valid)
 728                                         break;
 729                         }
 730                         else if(bank == LIGHTBANK_NIGHT)
 731                         {
 732                                 // For night lighting, sunlight is not propagated
 733                                 break;
 734                         }
 735                         else
 736                         {
 737                                 // Invalid lighting bank
 738                                 assert(0);
 739                         }
 740
 741                         /*dstream<<"Bottom for sunlight-propagated block ("
 742                                         <<pos.X<<","<<pos.Y<<","<<pos.Z<<") not valid"
 743                                         <<std::endl;*/
 744
 745                         // Bottom sunlight is not valid; get the block and loop to it
 746
 747                         pos.Y--;
 748                         try{
 749                                 block = getBlockNoCreate(pos);
 750                         }
 751                         catch(InvalidPositionException &e)
 752                         {
 753                                 assert(0);
 754                         }
 755
 756                 }
 757         }
 758
 759         /*
 760                 Enable this to disable proper lighting for speeding up map
 761                 generation for testing or whatever
 762         */
 763 #if 0
 764         //if(g_settings.get(""))
 765         {
 766                 core::map<v3s16, MapBlock*>::Iterator i;
 767                 i = blocks_to_update.getIterator();
 768                 for(; i.atEnd() == false; i++)
 769                 {
 770                         MapBlock *block = i.getNode()->getValue();
 771                         v3s16 p = block->getPos();
 772                         block->setLightingExpired(false);
 773                 }
 774                 return;
 775         }
 776 #endif
 777
 778 #if 0
 779         {
 780                 TimeTaker timer("unspreadLight");
 781                 unspreadLight(bank, unlight_from, light_sources, modified_blocks);
 782         }
 783
 784         if(debug)
 785         {
 786                 u32 diff = modified_blocks.size() - count_was;
 787                 count_was = modified_blocks.size();
 788                 dstream<<"unspreadLight modified "<<diff<<std::endl;
 789         }
 790
 791         {
 792                 TimeTaker timer("spreadLight");
 793                 spreadLight(bank, light_sources, modified_blocks);
 794         }
 795
 796         if(debug)
 797         {
 798                 u32 diff = modified_blocks.size() - count_was;
 799                 count_was = modified_blocks.size();
 800                 dstream<<"spreadLight modified "<<diff<<std::endl;
 801         }
 802 #endif
 803
 804         {
 805                 //MapVoxelManipulator vmanip(this);
 806
 807                 // Make a manual voxel manipulator and load all the blocks
 808                 // that touch the requested blocks
 809                 ManualMapVoxelManipulator vmanip(this);
 810                 core::map<v3s16, MapBlock*>::Iterator i;
 811                 i = blocks_to_update.getIterator();
 812                 for(; i.atEnd() == false; i++)
 813                 {
 814                         MapBlock *block = i.getNode()->getValue();
 815                         v3s16 p = block->getPos();
 816
 817                         // Add all surrounding blocks
 818                         vmanip.initialEmerge(p - v3s16(1,1,1), p + v3s16(1,1,1));
 819
 820                         /*
 821                                 Add all surrounding blocks that have up-to-date lighting
 822                                 NOTE: This doesn't quite do the job (not everything
 823                                           appropriate is lighted)
 824                         */
 825                         /*for(s16 z=-1; z<=1; z++)
 826                         for(s16 y=-1; y<=1; y++)
 827                         for(s16 x=-1; x<=1; x++)
 828                         {
 829                                 v3s16 p(x,y,z);
 830                                 MapBlock *block = getBlockNoCreateNoEx(p);
 831                                 if(block == NULL)
 832                                         continue;
 833                                 if(block->isDummy())
 834                                         continue;
 835                                 if(block->getLightingExpired())
 836                                         continue;
 837                                 vmanip.initialEmerge(p, p);
 838                         }*/
 839
 840                         // Lighting of block will be updated completely
 841                         block->setLightingExpired(false);
 842                 }
 843
 844                 {
 845                         //TimeTaker timer("unSpreadLight");
 846                         vmanip.unspreadLight(bank, unlight_from, light_sources);
 847                 }
 848                 {
 849                         //TimeTaker timer("spreadLight");
 850                         vmanip.spreadLight(bank, light_sources);
 851                 }
 852                 {
 853                         //TimeTaker timer("blitBack");
 854                         vmanip.blitBack(modified_blocks);
 855                 }
 856                 /*dstream<<"emerge_time="<<emerge_time<<std::endl;
 857                 emerge_time = 0;*/
 858         }
 859
 860         //m_dout<<"Done ("<<getTimestamp()<<")"<<std::endl;
 861 }
 862
 863 void Map::updateLighting(core::map<v3s16, MapBlock*> & a_blocks,
 864                 core::map<v3s16, MapBlock*> & modified_blocks)
 865 {
 866         updateLighting(LIGHTBANK_DAY, a_blocks, modified_blocks);
 867         updateLighting(LIGHTBANK_NIGHT, a_blocks, modified_blocks);
 868
 869         /*
 870                 Update information about whether day and night light differ
 871         */
 872         for(core::map<v3s16, MapBlock*>::Iterator
 873                         i = modified_blocks.getIterator();
 874                         i.atEnd() == false; i++)
 875         {
 876                 MapBlock *block = i.getNode()->getValue();
 877                 block->updateDayNightDiff();
 878         }
 879 }
 880
 881 /*
 882 */
 883 void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 884                 core::map<v3s16, MapBlock*> &modified_blocks)
 885 {
 886         /*PrintInfo(m_dout);
 887         m_dout<<DTIME<<"Map::addNodeAndUpdate(): p=("
 888                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
 889
 890         /*
 891                 From this node to nodes underneath:
 892                 If lighting is sunlight (1.0), unlight neighbours and
 893                 set lighting to 0.
 894                 Else discontinue.
 895         */
 896
 897         v3s16 toppos = p + v3s16(0,1,0);
 898         v3s16 bottompos = p + v3s16(0,-1,0);
 899
 900         bool node_under_sunlight = true;
 901         core::map<v3s16, bool> light_sources;
 902
 903         /*
 904                 If there is a node at top and it doesn't have sunlight,
 905                 there has not been any sunlight going down.
 906
 907                 Otherwise there probably is.
 908         */
 909         try{
 910                 MapNode topnode = getNode(toppos);
 911
 912                 if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
 913                         node_under_sunlight = false;
 914         }
 915         catch(InvalidPositionException &e)
 916         {
 917         }
 918
 919 #if 0
 920         /*
 921                 If the new node is solid and there is grass below, change it to mud
 922         */
 923         if(content_features(n.d).walkable == true)
 924         {
 925                 try{
 926                         MapNode bottomnode = getNode(bottompos);
 927
 928                         if(bottomnode.d == CONTENT_GRASS
 929                                         || bottomnode.d == CONTENT_GRASS_FOOTSTEPS)
 930                         {
 931                                 bottomnode.d = CONTENT_MUD;
 932                                 setNode(bottompos, bottomnode);
 933                         }
 934                 }
 935                 catch(InvalidPositionException &e)
 936                 {
 937                 }
 938         }
 939 #endif
 940
 941 #if 0
 942         /*
 943                 If the new node is mud and it is under sunlight, change it
 944                 to grass
 945         */
 946         if(n.d == CONTENT_MUD && node_under_sunlight)
 947         {
 948                 n.d = CONTENT_GRASS;
 949         }
 950 #endif
 951
 952         /*
 953                 Remove all light that has come out of this node
 954         */
 955
 956         enum LightBank banks[] =
 957         {
 958                 LIGHTBANK_DAY,
 959                 LIGHTBANK_NIGHT
 960         };
 961         for(s32 i=0; i<2; i++)
 962         {
 963                 enum LightBank bank = banks[i];
 964
 965                 u8 lightwas = getNode(p).getLight(bank);
 966
 967                 // Add the block of the added node to modified_blocks
 968                 v3s16 blockpos = getNodeBlockPos(p);
 969                 MapBlock * block = getBlockNoCreate(blockpos);
 970                 assert(block != NULL);
 971                 modified_blocks.insert(blockpos, block);
 972
 973                 assert(isValidPosition(p));
 974
 975                 // Unlight neighbours of node.
 976                 // This means setting light of all consequent dimmer nodes
 977                 // to 0.
 978                 // This also collects the nodes at the border which will spread
 979                 // light again into this.
 980                 unLightNeighbors(bank, p, lightwas, light_sources, modified_blocks);
 981
 982                 n.setLight(bank, 0);
 983         }
 984
 985         /*
 986                 If node lets sunlight through and is under sunlight, it has
 987                 sunlight too.
 988         */
 989         if(node_under_sunlight && content_features(n.d).sunlight_propagates)
 990         {
 991                 n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 992         }
 993
 994         /*
 995                 Set the node on the map
 996         */
 997
 998         setNode(p, n);
 999
1000         /*
1001                 Add intial metadata
1002         */
1003
1004         NodeMetadata *meta_proto = content_features(n.d).initial_metadata;
1005         if(meta_proto)
1006         {
1007                 NodeMetadata *meta = meta_proto->clone();
1008                 setNodeMetadata(p, meta);
1009         }
1010
1011         /*
1012                 If node is under sunlight and doesn't let sunlight through,
1013                 take all sunlighted nodes under it and clear light from them
1014                 and from where the light has been spread.
1015                 TODO: This could be optimized by mass-unlighting instead
1016                           of looping
1017         */
1018         if(node_under_sunlight && !content_features(n.d).sunlight_propagates)
1019         {
1020                 s16 y = p.Y - 1;
1021                 for(;; y--){
1022                         //m_dout<<DTIME<<"y="<<y<<std::endl;
1023                         v3s16 n2pos(p.X, y, p.Z);
1024
1025                         MapNode n2;
1026                         try{
1027                                 n2 = getNode(n2pos);
1028                         }
1029                         catch(InvalidPositionException &e)
1030                         {
1031                                 break;
1032                         }
1033
1034                         if(n2.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
1035                         {
1036                                 unLightNeighbors(LIGHTBANK_DAY,
1037                                                 n2pos, n2.getLight(LIGHTBANK_DAY),
1038                                                 light_sources, modified_blocks);
1039                                 n2.setLight(LIGHTBANK_DAY, 0);
1040                                 setNode(n2pos, n2);
1041                         }
1042                         else
1043                                 break;
1044                 }
1045         }
1046
1047         for(s32 i=0; i<2; i++)
1048         {
1049                 enum LightBank bank = banks[i];
1050
1051                 /*
1052                         Spread light from all nodes that might be capable of doing so
1053                 */
1054                 spreadLight(bank, light_sources, modified_blocks);
1055         }
1056
1057         /*
1058                 Update information about whether day and night light differ
1059         */
1060         for(core::map<v3s16, MapBlock*>::Iterator
1061                         i = modified_blocks.getIterator();
1062                         i.atEnd() == false; i++)
1063         {
1064                 MapBlock *block = i.getNode()->getValue();
1065                 block->updateDayNightDiff();
1066         }
1067
1068         /*
1069                 Add neighboring liquid nodes and the node itself if it is
1070                 liquid (=water node was added) to transform queue.
1071         */
1072         v3s16 dirs[7] = {
1073                 v3s16(0,0,0), // self
1074                 v3s16(0,0,1), // back
1075                 v3s16(0,1,0), // top
1076                 v3s16(1,0,0), // right
1077                 v3s16(0,0,-1), // front
1078                 v3s16(0,-1,0), // bottom
1079                 v3s16(-1,0,0), // left
1080         };
1081         for(u16 i=0; i<7; i++)
1082         {
1083                 try
1084                 {
1085
1086                 v3s16 p2 = p + dirs[i];
1087
1088                 MapNode n2 = getNode(p2);
1089                 if(content_liquid(n2.d))
1090                 {
1091                         m_transforming_liquid.push_back(p2);
1092                 }
1093
1094                 }catch(InvalidPositionException &e)
1095                 {
1096                 }
1097         }
1098 }
1099
1100 /*
1101 */
1102 void Map::removeNodeAndUpdate(v3s16 p,
1103                 core::map<v3s16, MapBlock*> &modified_blocks)
1104 {
1105         /*PrintInfo(m_dout);
1106         m_dout<<DTIME<<"Map::removeNodeAndUpdate(): p=("
1107                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1108
1109         bool node_under_sunlight = true;
1110
1111         v3s16 toppos = p + v3s16(0,1,0);
1112
1113         // Node will be replaced with this
1114         u8 replace_material = CONTENT_AIR;
1115
1116         /*
1117                 If there is a node at top and it doesn't have sunlight,
1118                 there will be no sunlight going down.
1119         */
1120         try{
1121                 MapNode topnode = getNode(toppos);
1122
1123                 if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
1124                         node_under_sunlight = false;
1125         }
1126         catch(InvalidPositionException &e)
1127         {
1128         }
1129
1130         core::map<v3s16, bool> light_sources;
1131
1132         enum LightBank banks[] =
1133         {
1134                 LIGHTBANK_DAY,
1135                 LIGHTBANK_NIGHT
1136         };
1137         for(s32 i=0; i<2; i++)
1138         {
1139                 enum LightBank bank = banks[i];
1140
1141                 /*
1142                         Unlight neighbors (in case the node is a light source)
1143                 */
1144                 unLightNeighbors(bank, p,
1145                                 getNode(p).getLight(bank),
1146                                 light_sources, modified_blocks);
1147         }
1148
1149         /*
1150                 Remove node metadata
1151         */
1152
1153         removeNodeMetadata(p);
1154
1155         /*
1156                 Remove the node.
1157                 This also clears the lighting.
1158         */
1159
1160         MapNode n;
1161         n.d = replace_material;
1162         setNode(p, n);
1163
1164         for(s32 i=0; i<2; i++)
1165         {
1166                 enum LightBank bank = banks[i];
1167
1168                 /*
1169                         Recalculate lighting
1170                 */
1171                 spreadLight(bank, light_sources, modified_blocks);
1172         }
1173
1174         // Add the block of the removed node to modified_blocks
1175         v3s16 blockpos = getNodeBlockPos(p);
1176         MapBlock * block = getBlockNoCreate(blockpos);
1177         assert(block != NULL);
1178         modified_blocks.insert(blockpos, block);
1179
1180         /*
1181                 If the removed node was under sunlight, propagate the
1182                 sunlight down from it and then light all neighbors
1183                 of the propagated blocks.
1184         */
1185         if(node_under_sunlight)
1186         {
1187                 s16 ybottom = propagateSunlight(p, modified_blocks);
1188                 /*m_dout<<DTIME<<"Node was under sunlight. "
1189                                 "Propagating sunlight";
1190                 m_dout<<DTIME<<" -> ybottom="<<ybottom<<std::endl;*/
1191                 s16 y = p.Y;
1192                 for(; y >= ybottom; y--)
1193                 {
1194                         v3s16 p2(p.X, y, p.Z);
1195                         /*m_dout<<DTIME<<"lighting neighbors of node ("
1196                                         <<p2.X<<","<<p2.Y<<","<<p2.Z<<")"
1197                                         <<std::endl;*/
1198                         lightNeighbors(LIGHTBANK_DAY, p2, modified_blocks);
1199                 }
1200         }
1201         else
1202         {
1203                 // Set the lighting of this node to 0
1204                 // TODO: Is this needed? Lighting is cleared up there already.
1205                 try{
1206                         MapNode n = getNode(p);
1207                         n.setLight(LIGHTBANK_DAY, 0);
1208                         setNode(p, n);
1209                 }
1210                 catch(InvalidPositionException &e)
1211                 {
1212                         assert(0);
1213                 }
1214         }
1215
1216         for(s32 i=0; i<2; i++)
1217         {
1218                 enum LightBank bank = banks[i];
1219
1220                 // Get the brightest neighbour node and propagate light from it
1221                 v3s16 n2p = getBrightestNeighbour(bank, p);
1222                 try{
1223                         MapNode n2 = getNode(n2p);
1224                         lightNeighbors(bank, n2p, modified_blocks);
1225                 }
1226                 catch(InvalidPositionException &e)
1227                 {
1228                 }
1229         }
1230
1231         /*
1232                 Update information about whether day and night light differ
1233         */
1234         for(core::map<v3s16, MapBlock*>::Iterator
1235                         i = modified_blocks.getIterator();
1236                         i.atEnd() == false; i++)
1237         {
1238                 MapBlock *block = i.getNode()->getValue();
1239                 block->updateDayNightDiff();
1240         }
1241
1242         /*
1243                 Add neighboring liquid nodes to transform queue.
1244         */
1245         v3s16 dirs[6] = {
1246                 v3s16(0,0,1), // back
1247                 v3s16(0,1,0), // top
1248                 v3s16(1,0,0), // right
1249                 v3s16(0,0,-1), // front
1250                 v3s16(0,-1,0), // bottom
1251                 v3s16(-1,0,0), // left
1252         };
1253         for(u16 i=0; i<6; i++)
1254         {
1255                 try
1256                 {
1257
1258                 v3s16 p2 = p + dirs[i];
1259
1260                 MapNode n2 = getNode(p2);
1261                 if(content_liquid(n2.d))
1262                 {
1263                         m_transforming_liquid.push_back(p2);
1264                 }
1265
1266                 }catch(InvalidPositionException &e)
1267                 {
1268                 }
1269         }
1270 }
1271
1272 bool Map::addNodeWithEvent(v3s16 p, MapNode n)
1273 {
1274         MapEditEvent event;
1275         event.type = MEET_ADDNODE;
1276         event.p = p;
1277         event.n = n;
1278
1279         bool succeeded = true;
1280         try{
1281                 core::map<v3s16, MapBlock*> modified_blocks;
1282                 addNodeAndUpdate(p, n, modified_blocks);
1283
1284                 // Copy modified_blocks to event
1285                 for(core::map<v3s16, MapBlock*>::Iterator
1286                                 i = modified_blocks.getIterator();
1287                                 i.atEnd()==false; i++)
1288                 {
1289                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1290                 }
1291         }
1292         catch(InvalidPositionException &e){
1293                 succeeded = false;
1294         }
1295
1296         dispatchEvent(&event);
1297
1298         return succeeded;
1299 }
1300
1301 bool Map::removeNodeWithEvent(v3s16 p)
1302 {
1303         MapEditEvent event;
1304         event.type = MEET_REMOVENODE;
1305         event.p = p;
1306
1307         bool succeeded = true;
1308         try{
1309                 core::map<v3s16, MapBlock*> modified_blocks;
1310                 removeNodeAndUpdate(p, modified_blocks);
1311
1312                 // Copy modified_blocks to event
1313                 for(core::map<v3s16, MapBlock*>::Iterator
1314                                 i = modified_blocks.getIterator();
1315                                 i.atEnd()==false; i++)
1316                 {
1317                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1318                 }
1319         }
1320         catch(InvalidPositionException &e){
1321                 succeeded = false;
1322         }
1323
1324         dispatchEvent(&event);
1325
1326         return succeeded;
1327 }
1328
1329 bool Map::dayNightDiffed(v3s16 blockpos)
1330 {
1331         try{
1332                 v3s16 p = blockpos + v3s16(0,0,0);
1333                 MapBlock *b = getBlockNoCreate(p);
1334                 if(b->dayNightDiffed())
1335                         return true;
1336         }
1337         catch(InvalidPositionException &e){}
1338         // Leading edges
1339         try{
1340                 v3s16 p = blockpos + v3s16(-1,0,0);
1341                 MapBlock *b = getBlockNoCreate(p);
1342                 if(b->dayNightDiffed())
1343                         return true;
1344         }
1345         catch(InvalidPositionException &e){}
1346         try{
1347                 v3s16 p = blockpos + v3s16(0,-1,0);
1348                 MapBlock *b = getBlockNoCreate(p);
1349                 if(b->dayNightDiffed())
1350                         return true;
1351         }
1352         catch(InvalidPositionException &e){}
1353         try{
1354                 v3s16 p = blockpos + v3s16(0,0,-1);
1355                 MapBlock *b = getBlockNoCreate(p);
1356                 if(b->dayNightDiffed())
1357                         return true;
1358         }
1359         catch(InvalidPositionException &e){}
1360         // Trailing edges
1361         try{
1362                 v3s16 p = blockpos + v3s16(1,0,0);
1363                 MapBlock *b = getBlockNoCreate(p);
1364                 if(b->dayNightDiffed())
1365                         return true;
1366         }
1367         catch(InvalidPositionException &e){}
1368         try{
1369                 v3s16 p = blockpos + v3s16(0,1,0);
1370                 MapBlock *b = getBlockNoCreate(p);
1371                 if(b->dayNightDiffed())
1372                         return true;
1373         }
1374         catch(InvalidPositionException &e){}
1375         try{
1376                 v3s16 p = blockpos + v3s16(0,0,1);
1377                 MapBlock *b = getBlockNoCreate(p);
1378                 if(b->dayNightDiffed())
1379                         return true;
1380         }
1381         catch(InvalidPositionException &e){}
1382
1383         return false;
1384 }
1385
1386 /*
1387         Updates usage timers
1388 */
1389 void Map::timerUpdate(float dtime, float unload_timeout,
1390                 core::list<v3s16> *unloaded_blocks)
1391 {
1392         bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
1393
1394         core::list<v2s16> sector_deletion_queue;
1395         u32 deleted_blocks_count = 0;
1396         u32 saved_blocks_count = 0;
1397
1398         core::map<v2s16, MapSector*>::Iterator si;
1399
1400         si = m_sectors.getIterator();
1401         for(; si.atEnd() == false; si++)
1402         {
1403                 MapSector *sector = si.getNode()->getValue();
1404
1405                 bool all_blocks_deleted = true;
1406
1407                 core::list<MapBlock*> blocks;
1408                 sector->getBlocks(blocks);
1409                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1410                                 i != blocks.end(); i++)
1411                 {
1412                         MapBlock *block = (*i);
1413
1414                         block->incrementUsageTimer(dtime);
1415
1416                         if(block->getUsageTimer() > unload_timeout)
1417                         {
1418                                 v3s16 p = block->getPos();
1419
1420                                 // Save if modified
1421                                 if(block->getModified() != MOD_STATE_CLEAN
1422                                                 && save_before_unloading)
1423                                 {
1424                                         saveBlock(block);
1425                                         saved_blocks_count++;
1426                                 }
1427
1428                                 // Delete from memory
1429                                 sector->deleteBlock(block);
1430
1431                                 if(unloaded_blocks)
1432                                         unloaded_blocks->push_back(p);
1433
1434                                 deleted_blocks_count++;
1435                         }
1436                         else
1437                         {
1438                                 all_blocks_deleted = false;
1439                         }
1440                 }
1441
1442                 if(all_blocks_deleted)
1443                 {
1444                         sector_deletion_queue.push_back(si.getNode()->getKey());
1445                 }
1446         }
1447
1448         // Finally delete the empty sectors
1449         deleteSectors(sector_deletion_queue);
1450
1451         if(deleted_blocks_count != 0)
1452         {
1453                 PrintInfo(dstream); // ServerMap/ClientMap:
1454                 dstream<<"Unloaded "<<deleted_blocks_count
1455                                 <<" blocks from memory";
1456                 if(save_before_unloading)
1457                         dstream<<", of which "<<saved_blocks_count<<" were written";
1458                 dstream<<"."<<std::endl;
1459         }
1460 }
1461
1462 void Map::deleteSectors(core::list<v2s16> &list)
1463 {
1464         core::list<v2s16>::Iterator j;
1465         for(j=list.begin(); j!=list.end(); j++)
1466         {
1467                 MapSector *sector = m_sectors[*j];
1468                 // If sector is in sector cache, remove it from there
1469                 if(m_sector_cache == sector)
1470                         m_sector_cache = NULL;
1471                 // Remove from map and delete
1472                 m_sectors.remove(*j);
1473                 delete sector;
1474         }
1475 }
1476
1477 #if 0
1478 void Map::unloadUnusedData(float timeout,
1479                 core::list<v3s16> *deleted_blocks)
1480 {
1481         core::list<v2s16> sector_deletion_queue;
1482         u32 deleted_blocks_count = 0;
1483         u32 saved_blocks_count = 0;
1484
1485         core::map<v2s16, MapSector*>::Iterator si = m_sectors.getIterator();
1486         for(; si.atEnd() == false; si++)
1487         {
1488                 MapSector *sector = si.getNode()->getValue();
1489
1490                 bool all_blocks_deleted = true;
1491
1492                 core::list<MapBlock*> blocks;
1493                 sector->getBlocks(blocks);
1494                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1495                                 i != blocks.end(); i++)
1496                 {
1497                         MapBlock *block = (*i);
1498
1499                         if(block->getUsageTimer() > timeout)
1500                         {
1501                                 // Save if modified
1502                                 if(block->getModified() != MOD_STATE_CLEAN)
1503                                 {
1504                                         saveBlock(block);
1505                                         saved_blocks_count++;
1506                                 }
1507                                 // Delete from memory
1508                                 sector->deleteBlock(block);
1509                                 deleted_blocks_count++;
1510                         }
1511                         else
1512                         {
1513                                 all_blocks_deleted = false;
1514                         }
1515                 }
1516
1517                 if(all_blocks_deleted)
1518                 {
1519                         sector_deletion_queue.push_back(si.getNode()->getKey());
1520                 }
1521         }
1522
1523         deleteSectors(sector_deletion_queue);
1524
1525         dstream<<"Map: Unloaded "<<deleted_blocks_count<<" blocks from memory"
1526                         <<", of which "<<saved_blocks_count<<" were wr."
1527                         <<std::endl;
1528
1529         //return sector_deletion_queue.getSize();
1530         //return deleted_blocks_count;
1531 }
1532 #endif
1533
1534 void Map::PrintInfo(std::ostream &out)
1535 {
1536         out<<"Map: ";
1537 }
1538
1539 #define WATER_DROP_BOOST 4
1540
1541 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
1542 {
1543         DSTACK(__FUNCTION_NAME);
1544         //TimeTaker timer("transformLiquids()");
1545
1546         u32 loopcount = 0;
1547         u32 initial_size = m_transforming_liquid.size();
1548
1549         /*if(initial_size != 0)
1550                 dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
1551
1552         while(m_transforming_liquid.size() != 0)
1553         {
1554                 /*
1555                         Get a queued transforming liquid node
1556                 */
1557                 v3s16 p0 = m_transforming_liquid.pop_front();
1558
1559                 MapNode n0 = getNodeNoEx(p0);
1560
1561                 // Don't deal with non-liquids
1562                 if(content_liquid(n0.d) == false)
1563                         continue;
1564
1565                 bool is_source = !content_flowing_liquid(n0.d);
1566
1567                 u8 liquid_level = 8;
1568                 if(is_source == false)
1569                         liquid_level = n0.param2 & 0x0f;
1570
1571                 // Turn possible source into non-source
1572                 u8 nonsource_c = make_liquid_flowing(n0.d);
1573
1574                 /*
1575                         If not source, check that some node flows into this one
1576                         and what is the level of liquid in this one
1577                 */
1578                 if(is_source == false)
1579                 {
1580                         s8 new_liquid_level_max = -1;
1581
1582                         v3s16 dirs_from[5] = {
1583                                 v3s16(0,1,0), // top
1584                                 v3s16(0,0,1), // back
1585                                 v3s16(1,0,0), // right
1586                                 v3s16(0,0,-1), // front
1587                                 v3s16(-1,0,0), // left
1588                         };
1589                         for(u16 i=0; i<5; i++)
1590                         {
1591                                 bool from_top = (i==0);
1592
1593                                 v3s16 p2 = p0 + dirs_from[i];
1594                                 MapNode n2 = getNodeNoEx(p2);
1595
1596                                 if(content_liquid(n2.d))
1597                                 {
1598                                         u8 n2_nonsource_c = make_liquid_flowing(n2.d);
1599                                         // Check that the liquids are the same type
1600                                         if(n2_nonsource_c != nonsource_c)
1601                                         {
1602                                                 dstream<<"WARNING: Not handling: different liquids"
1603                                                                 " collide"<<std::endl;
1604                                                 continue;
1605                                         }
1606                                         bool n2_is_source = !content_flowing_liquid(n2.d);
1607                                         s8 n2_liquid_level = 8;
1608                                         if(n2_is_source == false)
1609                                                 n2_liquid_level = n2.param2 & 0x07;
1610
1611                                         s8 new_liquid_level = -1;
1612                                         if(from_top)
1613                                         {
1614                                                 //new_liquid_level = 7;
1615                                                 if(n2_liquid_level >= 7 - WATER_DROP_BOOST)
1616                                                         new_liquid_level = 7;
1617                                                 else
1618                                                         new_liquid_level = n2_liquid_level + WATER_DROP_BOOST;
1619                                         }
1620                                         else if(n2_liquid_level > 0)
1621                                         {
1622                                                 new_liquid_level = n2_liquid_level - 1;
1623                                         }
1624
1625                                         if(new_liquid_level > new_liquid_level_max)
1626                                                 new_liquid_level_max = new_liquid_level;
1627                                 }
1628                         } //for
1629
1630                         /*
1631                                 If liquid level should be something else, update it and
1632                                 add all the neighboring water nodes to the transform queue.
1633                         */
1634                         if(new_liquid_level_max != liquid_level)
1635                         {
1636                                 if(new_liquid_level_max == -1)
1637                                 {
1638                                         // Remove water alltoghether
1639                                         n0.d = CONTENT_AIR;
1640                                         n0.param2 = 0;
1641                                         setNode(p0, n0);
1642                                 }
1643                                 else
1644                                 {
1645                                         n0.param2 = new_liquid_level_max;
1646                                         setNode(p0, n0);
1647                                 }
1648
1649                                 // Block has been modified
1650                                 {
1651                                         v3s16 blockpos = getNodeBlockPos(p0);
1652                                         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1653                                         if(block != NULL)
1654                                                 modified_blocks.insert(blockpos, block);
1655                                 }
1656
1657                                 /*
1658                                         Add neighboring non-source liquid nodes to transform queue.
1659                                 */
1660                                 v3s16 dirs[6] = {
1661                                         v3s16(0,0,1), // back
1662                                         v3s16(0,1,0), // top
1663                                         v3s16(1,0,0), // right
1664                                         v3s16(0,0,-1), // front
1665                                         v3s16(0,-1,0), // bottom
1666                                         v3s16(-1,0,0), // left
1667                                 };
1668                                 for(u16 i=0; i<6; i++)
1669                                 {
1670                                         v3s16 p2 = p0 + dirs[i];
1671
1672                                         MapNode n2 = getNodeNoEx(p2);
1673                                         if(content_flowing_liquid(n2.d))
1674                                         {
1675                                                 m_transforming_liquid.push_back(p2);
1676                                         }
1677                                 }
1678                         }
1679                 }
1680
1681                 // Get a new one from queue if the node has turned into non-water
1682                 if(content_liquid(n0.d) == false)
1683                         continue;
1684
1685                 /*
1686                         Flow water from this node
1687                 */
1688                 v3s16 dirs_to[5] = {
1689                         v3s16(0,-1,0), // bottom
1690                         v3s16(0,0,1), // back
1691                         v3s16(1,0,0), // right
1692                         v3s16(0,0,-1), // front
1693                         v3s16(-1,0,0), // left
1694                 };
1695                 for(u16 i=0; i<5; i++)
1696                 {
1697                         bool to_bottom = (i == 0);
1698
1699                         // If liquid is at lowest possible height, it's not going
1700                         // anywhere except down
1701                         if(liquid_level == 0 && to_bottom == false)
1702                                 continue;
1703
1704                         u8 liquid_next_level = 0;
1705                         // If going to bottom
1706                         if(to_bottom)
1707                         {
1708                                 //liquid_next_level = 7;
1709                                 if(liquid_level >= 7 - WATER_DROP_BOOST)
1710                                         liquid_next_level = 7;
1711                                 else
1712                                         liquid_next_level = liquid_level + WATER_DROP_BOOST;
1713                         }
1714                         else
1715                                 liquid_next_level = liquid_level - 1;
1716
1717                         bool n2_changed = false;
1718                         bool flowed = false;
1719
1720                         v3s16 p2 = p0 + dirs_to[i];
1721
1722                         MapNode n2 = getNodeNoEx(p2);
1723                         //dstream<<"[1] n2.param="<<(int)n2.param<<std::endl;
1724
1725                         if(content_liquid(n2.d))
1726                         {
1727                                 u8 n2_nonsource_c = make_liquid_flowing(n2.d);
1728                                 // Check that the liquids are the same type
1729                                 if(n2_nonsource_c != nonsource_c)
1730                                 {
1731                                         dstream<<"WARNING: Not handling: different liquids"
1732                                                         " collide"<<std::endl;
1733                                         continue;
1734                                 }
1735                                 bool n2_is_source = !content_flowing_liquid(n2.d);
1736                                 u8 n2_liquid_level = 8;
1737                                 if(n2_is_source == false)
1738                                         n2_liquid_level = n2.param2 & 0x07;
1739
1740                                 if(to_bottom)
1741                                 {
1742                                         flowed = true;
1743                                 }
1744
1745                                 if(n2_is_source)
1746                                 {
1747                                         // Just flow into the source, nothing changes.
1748                                         // n2_changed is not set because destination didn't change
1749                                         flowed = true;
1750                                 }
1751                                 else
1752                                 {
1753                                         if(liquid_next_level > liquid_level)
1754                                         {
1755                                                 n2.param2 = liquid_next_level;
1756                                                 setNode(p2, n2);
1757
1758                                                 n2_changed = true;
1759                                                 flowed = true;
1760                                         }
1761                                 }
1762                         }
1763                         else if(n2.d == CONTENT_AIR)
1764                         {
1765                                 n2.d = nonsource_c;
1766                                 n2.param2 = liquid_next_level;
1767                                 setNode(p2, n2);
1768
1769                                 n2_changed = true;
1770                                 flowed = true;
1771                         }
1772
1773                         //dstream<<"[2] n2.param="<<(int)n2.param<<std::endl;
1774
1775                         if(n2_changed)
1776                         {
1777                                 m_transforming_liquid.push_back(p2);
1778
1779                                 v3s16 blockpos = getNodeBlockPos(p2);
1780                                 MapBlock *block = getBlockNoCreateNoEx(blockpos);
1781                                 if(block != NULL)
1782                                         modified_blocks.insert(blockpos, block);
1783                         }
1784
1785                         // If n2_changed to bottom, don't flow anywhere else
1786                         if(to_bottom && flowed && !is_source)
1787                                 break;
1788                 }
1789
1790                 loopcount++;
1791                 //if(loopcount >= 100000)
1792                 if(loopcount >= initial_size * 1)
1793                         break;
1794         }
1795         //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
1796 }
1797
1798 NodeMetadata* Map::getNodeMetadata(v3s16 p)
1799 {
1800         v3s16 blockpos = getNodeBlockPos(p);
1801         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1802         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1803         if(block == NULL)
1804         {
1805                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1806                                 <<std::endl;
1807                 return NULL;
1808         }
1809         NodeMetadata *meta = block->m_node_metadata.get(p_rel);
1810         return meta;
1811 }
1812
1813 void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
1814 {
1815         v3s16 blockpos = getNodeBlockPos(p);
1816         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1817         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1818         if(block == NULL)
1819         {
1820                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1821                                 <<std::endl;
1822                 return;
1823         }
1824         block->m_node_metadata.set(p_rel, meta);
1825 }
1826
1827 void Map::removeNodeMetadata(v3s16 p)
1828 {
1829         v3s16 blockpos = getNodeBlockPos(p);
1830         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1831         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1832         if(block == NULL)
1833         {
1834                 dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
1835                                 <<std::endl;
1836                 return;
1837         }
1838         block->m_node_metadata.remove(p_rel);
1839 }
1840
1841 void Map::nodeMetadataStep(float dtime,
1842                 core::map<v3s16, MapBlock*> &changed_blocks)
1843 {
1844         /*
1845                 NOTE:
1846                 Currently there is no way to ensure that all the necessary
1847                 blocks are loaded when this is run. (They might get unloaded)
1848                 NOTE: ^- Actually, that might not be so. In a quick test it
1849                 reloaded a block with a furnace when I walked back to it from
1850                 a distance.
1851         */
1852         core::map<v2s16, MapSector*>::Iterator si;
1853         si = m_sectors.getIterator();
1854         for(; si.atEnd() == false; si++)
1855         {
1856                 MapSector *sector = si.getNode()->getValue();
1857                 core::list< MapBlock * > sectorblocks;
1858                 sector->getBlocks(sectorblocks);
1859                 core::list< MapBlock * >::Iterator i;
1860                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
1861                 {
1862                         MapBlock *block = *i;
1863                         bool changed = block->m_node_metadata.step(dtime);
1864                         if(changed)
1865                                 changed_blocks[block->getPos()] = block;
1866                 }
1867         }
1868 }
1869
1870 /*
1871         ServerMap
1872 */
1873
1874 ServerMap::ServerMap(std::string savedir):
1875         Map(dout_server),
1876         m_seed(0),
1877         m_map_metadata_changed(true)
1878 {
1879         dstream<<__FUNCTION_NAME<<std::endl;
1880
1881         //m_chunksize = 8; // Takes a few seconds
1882
1883         m_seed = (((u64)(myrand()%0xffff)<<0)
1884                         + ((u64)(myrand()%0xffff)<<16)
1885                         + ((u64)(myrand()%0xffff)<<32)
1886                         + ((u64)(myrand()%0xffff)<<48));
1887
1888         /*
1889                 Experimental and debug stuff
1890         */
1891
1892         {
1893         }
1894
1895         /*
1896                 Try to load map; if not found, create a new one.
1897         */
1898
1899         m_savedir = savedir;
1900         m_map_saving_enabled = false;
1901
1902         try
1903         {
1904                 // If directory exists, check contents and load if possible
1905                 if(fs::PathExists(m_savedir))
1906                 {
1907                         // If directory is empty, it is safe to save into it.
1908                         if(fs::GetDirListing(m_savedir).size() == 0)
1909                         {
1910                                 dstream<<DTIME<<"Server: Empty save directory is valid."
1911                                                 <<std::endl;
1912                                 m_map_saving_enabled = true;
1913                         }
1914                         else
1915                         {
1916                                 try{
1917                                         // Load map metadata (seed, chunksize)
1918                                         loadMapMeta();
1919                                 }
1920                                 catch(FileNotGoodException &e){
1921                                         dstream<<DTIME<<"WARNING: Could not load map metadata"
1922                                                         //<<" Disabling chunk-based generator."
1923                                                         <<std::endl;
1924                                         //m_chunksize = 0;
1925                                 }
1926
1927                                 /*try{
1928                                         // Load chunk metadata
1929                                         loadChunkMeta();
1930                                 }
1931                                 catch(FileNotGoodException &e){
1932                                         dstream<<DTIME<<"WARNING: Could not load chunk metadata."
1933                                                         <<" Disabling chunk-based generator."
1934                                                         <<std::endl;
1935                                         m_chunksize = 0;
1936                                 }*/
1937
1938                                 /*dstream<<DTIME<<"Server: Successfully loaded chunk "
1939                                                 "metadata and sector (0,0) from "<<savedir<<
1940                                                 ", assuming valid save directory."
1941                                                 <<std::endl;*/
1942
1943                                 dstream<<DTIME<<"INFO: Server: Successfully loaded map "
1944                                                 <<"and chunk metadata from "<<savedir
1945                                                 <<", assuming valid save directory."
1946                                                 <<std::endl;
1947
1948                                 m_map_saving_enabled = true;
1949                                 // Map loaded, not creating new one
1950                                 return;
1951                         }
1952                 }
1953                 // If directory doesn't exist, it is safe to save to it
1954                 else{
1955                         m_map_saving_enabled = true;
1956                 }
1957         }
1958         catch(std::exception &e)
1959         {
1960                 dstream<<DTIME<<"WARNING: Server: Failed to load map from "<<savedir
1961                                 <<", exception: "<<e.what()<<std::endl;
1962                 dstream<<"Please remove the map or fix it."<<std::endl;
1963                 dstream<<"WARNING: Map saving will be disabled."<<std::endl;
1964         }
1965
1966         dstream<<DTIME<<"INFO: Initializing new map."<<std::endl;
1967
1968         // Create zero sector
1969         emergeSector(v2s16(0,0));
1970
1971         // Initially write whole map
1972         save(false);
1973 }
1974
1975 ServerMap::~ServerMap()
1976 {
1977         dstream<<__FUNCTION_NAME<<std::endl;
1978
1979         try
1980         {
1981                 if(m_map_saving_enabled)
1982                 {
1983                         // Save only changed parts
1984                         save(true);
1985                         dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
1986                 }
1987                 else
1988                 {
1989                         dstream<<DTIME<<"Server: map not saved"<<std::endl;
1990                 }
1991         }
1992         catch(std::exception &e)
1993         {
1994                 dstream<<DTIME<<"Server: Failed to save map to "<<m_savedir
1995                                 <<", exception: "<<e.what()<<std::endl;
1996         }
1997
1998 #if 0
1999         /*
2000                 Free all MapChunks
2001         */
2002         core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
2003         for(; i.atEnd() == false; i++)
2004         {
2005                 MapChunk *chunk = i.getNode()->getValue();
2006                 delete chunk;
2007         }
2008 #endif
2009 }
2010
2011 void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
2012 {
2013         /*dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2014                         <<blockpos.Z<<")"<<std::endl;*/
2015
2016         data->no_op = false;
2017         data->seed = m_seed;
2018         data->blockpos = blockpos;
2019
2020         /*
2021                 Create the whole area of this and the neighboring blocks
2022         */
2023         {
2024                 //TimeTaker timer("initBlockMake() create area");
2025
2026                 for(s16 x=-1; x<=1; x++)
2027                 for(s16 z=-1; z<=1; z++)
2028                 {
2029                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2030                         // Sector metadata is loaded from disk if not already loaded.
2031                         ServerMapSector *sector = createSector(sectorpos);
2032                         assert(sector);
2033
2034                         for(s16 y=-1; y<=1; y++)
2035                         {
2036                                 //MapBlock *block = createBlock(blockpos);
2037                                 // 1) get from memory, 2) load from disk
2038                                 MapBlock *block = emergeBlock(blockpos, false);
2039                                 // 3) create a blank one
2040                                 if(block == NULL)
2041                                         block = createBlock(blockpos);
2042
2043                                 // Lighting will not be valid after make_chunk is called
2044                                 block->setLightingExpired(true);
2045                                 // Lighting will be calculated
2046                                 //block->setLightingExpired(false);
2047
2048                                 /*
2049                                         Block gets sunlight if this is true.
2050
2051                                         This should be set to true when the top side of a block
2052                                         is completely exposed to the sky.
2053                                 */
2054                                 block->setIsUnderground(false);
2055                         }
2056                 }
2057         }
2058
2059         /*
2060                 Now we have a big empty area.
2061
2062                 Make a ManualMapVoxelManipulator that contains this and the
2063                 neighboring blocks
2064         */
2065
2066         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2067         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2068
2069         data->vmanip = new ManualMapVoxelManipulator(this);
2070         //data->vmanip->setMap(this);
2071
2072         // Add the area
2073         {
2074                 //TimeTaker timer("initBlockMake() initialEmerge");
2075                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2076         }
2077
2078         // Data is ready now.
2079 }
2080
2081 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2082                 core::map<v3s16, MapBlock*> &changed_blocks)
2083 {
2084         v3s16 blockpos = data->blockpos;
2085         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2086                         <<blockpos.Z<<")"<<std::endl;*/
2087
2088         if(data->no_op)
2089         {
2090                 dstream<<"finishBlockMake(): no-op"<<std::endl;
2091                 return NULL;
2092         }
2093
2094         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2095
2096         /*dstream<<"Resulting vmanip:"<<std::endl;
2097         data->vmanip.print(dstream);*/
2098
2099         /*
2100                 Blit generated stuff to map
2101                 NOTE: blitBackAll adds nearly everything to changed_blocks
2102         */
2103         {
2104                 // 70ms @cs=8
2105                 //TimeTaker timer("finishBlockMake() blitBackAll");
2106                 data->vmanip->blitBackAll(&changed_blocks);
2107         }
2108
2109         if(enable_mapgen_debug_info)
2110                 dstream<<"finishBlockMake: changed_blocks.size()="
2111                                 <<changed_blocks.size()<<std::endl;
2112
2113         /*
2114                 Copy transforming liquid information
2115         */
2116         while(data->transforming_liquid.size() > 0)
2117         {
2118                 v3s16 p = data->transforming_liquid.pop_front();
2119                 m_transforming_liquid.push_back(p);
2120         }
2121
2122         /*
2123                 Get central block
2124         */
2125         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2126         assert(block);
2127
2128         /*
2129                 Set is_underground flag for lighting with sunlight
2130         */
2131
2132         block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2133
2134         /*
2135                 Add sunlight to central block.
2136                 This makes in-dark-spawning monsters to not flood the whole thing.
2137                 Do not spread the light, though.
2138         */
2139         /*core::map<v3s16, bool> light_sources;
2140         bool black_air_left = false;
2141         block->propagateSunlight(light_sources, true, &black_air_left);*/
2142
2143         /*
2144                 NOTE: Lighting and object adding shouldn't really be here, but
2145                 lighting is a bit tricky to move properly to makeBlock.
2146                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2147                       - There needs to be some way for makeBlock to report back if
2148                             the lighting update is going further down because of the
2149                                 new block blocking light
2150         */
2151
2152         /*
2153                 Update lighting
2154                 NOTE: This takes ~60ms, TODO: Investigate why
2155         */
2156         {
2157                 TimeTaker t("finishBlockMake lighting update");
2158
2159                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2160 #if 1
2161                 // Center block
2162                 lighting_update_blocks.insert(block->getPos(), block);
2163 #endif
2164 #if 0
2165                 // All modified blocks
2166                 // NOTE: Should this be done? If this is not done, then the lighting
2167                 // of the others will be updated in a different place, one by one, i
2168                 // think... or they might not? Well, at least they are left marked as
2169                 // "lighting expired"; it seems that is not handled at all anywhere,
2170                 // so enabling this will slow it down A LOT because otherwise it
2171                 // would not do this at all. This causes the black trees.
2172                 for(core::map<v3s16, MapBlock*>::Iterator
2173                                 i = changed_blocks.getIterator();
2174                                 i.atEnd() == false; i++)
2175                 {
2176                         lighting_update_blocks.insert(i.getNode()->getKey(),
2177                                         i.getNode()->getValue());
2178                 }
2179 #endif
2180                 updateLighting(lighting_update_blocks, changed_blocks);
2181
2182                 if(enable_mapgen_debug_info == false)
2183                         t.stop(true); // Hide output
2184         }
2185
2186         /*
2187                 Add random objects to block
2188         */
2189         mapgen::add_random_objects(block);
2190
2191         /*
2192                 Go through changed blocks
2193         */
2194         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2195                         i.atEnd() == false; i++)
2196         {
2197                 MapBlock *block = i.getNode()->getValue();
2198                 assert(block);
2199                 /*
2200                         Update day/night difference cache of the MapBlocks
2201                 */
2202                 block->updateDayNightDiff();
2203                 /*
2204                         Set block as modified
2205                 */
2206                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2207         }
2208
2209         /*
2210                 Set central block as generated
2211         */
2212         block->setGenerated(true);
2213
2214         /*
2215                 Save changed parts of map
2216                 NOTE: Will be saved later.
2217         */
2218         //save(true);
2219
2220         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2221                         <<blockpos.Z<<")"<<std::endl;*/
2222
2223         return block;
2224 }
2225
2226 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2227 {
2228         DSTACKF("%s: p2d=(%d,%d)",
2229                         __FUNCTION_NAME,
2230                         p2d.X, p2d.Y);
2231
2232         /*
2233                 Check if it exists already in memory
2234         */
2235         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2236         if(sector != NULL)
2237                 return sector;
2238
2239         /*
2240                 Try to load it from disk (with blocks)
2241         */
2242         //if(loadSectorFull(p2d) == true)
2243
2244         /*
2245                 Try to load metadata from disk
2246         */
2247         if(loadSectorMeta(p2d) == true)
2248         {
2249                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2250                 if(sector == NULL)
2251                 {
2252                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2253                         throw InvalidPositionException("");
2254                 }
2255                 return sector;
2256         }
2257
2258         /*
2259                 Do not create over-limit
2260         */
2261         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2262         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2263         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2264         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2265                 throw InvalidPositionException("createSector(): pos. over limit");
2266
2267         /*
2268                 Generate blank sector
2269         */
2270
2271         sector = new ServerMapSector(this, p2d);
2272
2273         // Sector position on map in nodes
2274         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2275
2276         /*
2277                 Insert to container
2278         */
2279         m_sectors.insert(p2d, sector);
2280
2281         return sector;
2282 }
2283
2284 /*
2285         This is a quick-hand function for calling makeBlock().
2286 */
2287 MapBlock * ServerMap::generateBlock(
2288                 v3s16 p,
2289                 core::map<v3s16, MapBlock*> &modified_blocks
2290 )
2291 {
2292         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2293
2294         /*dstream<<"generateBlock(): "
2295                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2296                         <<std::endl;*/
2297
2298         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2299
2300         TimeTaker timer("generateBlock");
2301
2302         //MapBlock *block = original_dummy;
2303
2304         v2s16 p2d(p.X, p.Z);
2305         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2306
2307         /*
2308                 Do not generate over-limit
2309         */
2310         if(blockpos_over_limit(p))
2311         {
2312                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2313                 throw InvalidPositionException("generateBlock(): pos. over limit");
2314         }
2315
2316         /*
2317                 Create block make data
2318         */
2319         mapgen::BlockMakeData data;
2320         initBlockMake(&data, p);
2321
2322         /*
2323                 Generate block
2324         */
2325         {
2326                 TimeTaker t("mapgen::make_block()");
2327                 mapgen::make_block(&data);
2328
2329                 if(enable_mapgen_debug_info == false)
2330                         t.stop(true); // Hide output
2331         }
2332
2333         /*
2334                 Blit data back on map, update lighting, add mobs and whatever this does
2335         */
2336         finishBlockMake(&data, modified_blocks);
2337
2338         /*
2339                 Get central block
2340         */
2341         MapBlock *block = getBlockNoCreateNoEx(p);
2342         assert(block);
2343
2344 #if 0
2345         /*
2346                 Check result
2347         */
2348         bool erroneus_content = false;
2349         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2350         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2351         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2352         {
2353                 v3s16 p(x0,y0,z0);
2354                 MapNode n = block->getNode(p);
2355                 if(n.d == CONTENT_IGNORE)
2356                 {
2357                         dstream<<"CONTENT_IGNORE at "
2358                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2359                                         <<std::endl;
2360                         erroneus_content = true;
2361                         assert(0);
2362                 }
2363         }
2364         if(erroneus_content)
2365         {
2366                 assert(0);
2367         }
2368 #endif
2369
2370 #if 0
2371         /*
2372                 Generate a completely empty block
2373         */
2374         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2375         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2376         {
2377                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2378                 {
2379                         MapNode n;
2380                         if(y0%2==0)
2381                                 n.d = CONTENT_AIR;
2382                         else
2383                                 n.d = CONTENT_STONE;
2384                         block->setNode(v3s16(x0,y0,z0), n);
2385                 }
2386         }
2387 #endif
2388
2389         if(enable_mapgen_debug_info == false)
2390                 timer.stop(true); // Hide output
2391
2392         return block;
2393 }
2394
2395 MapBlock * ServerMap::createBlock(v3s16 p)
2396 {
2397         DSTACKF("%s: p=(%d,%d,%d)",
2398                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2399
2400         /*
2401                 Do not create over-limit
2402         */
2403         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2404         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2405         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2406         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2407         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2408         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2409                 throw InvalidPositionException("createBlock(): pos. over limit");
2410
2411         v2s16 p2d(p.X, p.Z);
2412         s16 block_y = p.Y;
2413         /*
2414                 This will create or load a sector if not found in memory.
2415                 If block exists on disk, it will be loaded.
2416
2417                 NOTE: On old save formats, this will be slow, as it generates
2418                       lighting on blocks for them.
2419         */
2420         ServerMapSector *sector;
2421         try{
2422                 sector = (ServerMapSector*)createSector(p2d);
2423                 assert(sector->getId() == MAPSECTOR_SERVER);
2424         }
2425         catch(InvalidPositionException &e)
2426         {
2427                 dstream<<"createBlock: createSector() failed"<<std::endl;
2428                 throw e;
2429         }
2430         /*
2431                 NOTE: This should not be done, or at least the exception
2432                 should not be passed on as std::exception, because it
2433                 won't be catched at all.
2434         */
2435         /*catch(std::exception &e)
2436         {
2437                 dstream<<"createBlock: createSector() failed: "
2438                                 <<e.what()<<std::endl;
2439                 throw e;
2440         }*/
2441
2442         /*
2443                 Try to get a block from the sector
2444         */
2445
2446         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2447         if(block)
2448         {
2449                 if(block->isDummy())
2450                         block->unDummify();
2451                 return block;
2452         }
2453         // Create blank
2454         block = sector->createBlankBlock(block_y);
2455         return block;
2456 }
2457
2458 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2459 {
2460         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2461                         __FUNCTION_NAME,
2462                         p.X, p.Y, p.Z, allow_generate);
2463
2464         {
2465                 MapBlock *block = getBlockNoCreateNoEx(p);
2466                 if(block)
2467                         return block;
2468         }
2469
2470         {
2471                 MapBlock *block = loadBlock(p);
2472                 if(block)
2473                         return block;
2474         }
2475
2476         if(allow_generate)
2477         {
2478                 core::map<v3s16, MapBlock*> modified_blocks;
2479                 MapBlock *block = generateBlock(p, modified_blocks);
2480                 if(block)
2481                 {
2482                         MapEditEvent event;
2483                         event.type = MEET_OTHER;
2484                         event.p = p;
2485
2486                         // Copy modified_blocks to event
2487                         for(core::map<v3s16, MapBlock*>::Iterator
2488                                         i = modified_blocks.getIterator();
2489                                         i.atEnd()==false; i++)
2490                         {
2491                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2492                         }
2493
2494                         // Queue event
2495                         dispatchEvent(&event);
2496
2497                         return block;
2498                 }
2499         }
2500
2501         return NULL;
2502 }
2503
2504 #if 0
2505         /*
2506                 Do not generate over-limit
2507         */
2508         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2509         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2510         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2511         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2512         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2513         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2514                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2515
2516         v2s16 p2d(p.X, p.Z);
2517         s16 block_y = p.Y;
2518         /*
2519                 This will create or load a sector if not found in memory.
2520                 If block exists on disk, it will be loaded.
2521         */
2522         ServerMapSector *sector;
2523         try{
2524                 sector = createSector(p2d);
2525                 //sector = emergeSector(p2d, changed_blocks);
2526         }
2527         catch(InvalidPositionException &e)
2528         {
2529                 dstream<<"emergeBlock: createSector() failed: "
2530                                 <<e.what()<<std::endl;
2531                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2532                                 <<std::endl
2533                                 <<"You could try to delete it."<<std::endl;
2534                 throw e;
2535         }
2536         catch(VersionMismatchException &e)
2537         {
2538                 dstream<<"emergeBlock: createSector() failed: "
2539                                 <<e.what()<<std::endl;
2540                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2541                                 <<std::endl
2542                                 <<"You could try to delete it."<<std::endl;
2543                 throw e;
2544         }
2545
2546         /*
2547                 Try to get a block from the sector
2548         */
2549
2550         bool does_not_exist = false;
2551         bool lighting_expired = false;
2552         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2553
2554         // If not found, try loading from disk
2555         if(block == NULL)
2556         {
2557                 block = loadBlock(p);
2558         }
2559
2560         // Handle result
2561         if(block == NULL)
2562         {
2563                 does_not_exist = true;
2564         }
2565         else if(block->isDummy() == true)
2566         {
2567                 does_not_exist = true;
2568         }
2569         else if(block->getLightingExpired())
2570         {
2571                 lighting_expired = true;
2572         }
2573         else
2574         {
2575                 // Valid block
2576                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2577                 return block;
2578         }
2579
2580         /*
2581                 If block was not found on disk and not going to generate a
2582                 new one, make sure there is a dummy block in place.
2583         */
2584         if(only_from_disk && (does_not_exist || lighting_expired))
2585         {
2586                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2587
2588                 if(block == NULL)
2589                 {
2590                         // Create dummy block
2591                         block = new MapBlock(this, p, true);
2592
2593                         // Add block to sector
2594                         sector->insertBlock(block);
2595                 }
2596                 // Done.
2597                 return block;
2598         }
2599
2600         //dstream<<"Not found on disk, generating."<<std::endl;
2601         // 0ms
2602         //TimeTaker("emergeBlock() generate");
2603
2604         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2605
2606         /*
2607                 If the block doesn't exist, generate the block.
2608         */
2609         if(does_not_exist)
2610         {
2611                 block = generateBlock(p, block, sector, changed_blocks,
2612                                 lighting_invalidated_blocks);
2613         }
2614
2615         if(lighting_expired)
2616         {
2617                 lighting_invalidated_blocks.insert(p, block);
2618         }
2619
2620 #if 0
2621         /*
2622                 Initially update sunlight
2623         */
2624         {
2625                 core::map<v3s16, bool> light_sources;
2626                 bool black_air_left = false;
2627                 bool bottom_invalid =
2628                                 block->propagateSunlight(light_sources, true,
2629                                 &black_air_left);
2630
2631                 // If sunlight didn't reach everywhere and part of block is
2632                 // above ground, lighting has to be properly updated
2633                 //if(black_air_left && some_part_underground)
2634                 if(black_air_left)
2635                 {
2636                         lighting_invalidated_blocks[block->getPos()] = block;
2637                 }
2638
2639                 if(bottom_invalid)
2640                 {
2641                         lighting_invalidated_blocks[block->getPos()] = block;
2642                 }
2643         }
2644 #endif
2645
2646         return block;
2647 }
2648 #endif
2649
2650 s16 ServerMap::findGroundLevel(v2s16 p2d)
2651 {
2652 #if 0
2653         /*
2654                 Uh, just do something random...
2655         */
2656         // Find existing map from top to down
2657         s16 max=63;
2658         s16 min=-64;
2659         v3s16 p(p2d.X, max, p2d.Y);
2660         for(; p.Y>min; p.Y--)
2661         {
2662                 MapNode n = getNodeNoEx(p);
2663                 if(n.d != CONTENT_IGNORE)
2664                         break;
2665         }
2666         if(p.Y == min)
2667                 goto plan_b;
2668         // If this node is not air, go to plan b
2669         if(getNodeNoEx(p).d != CONTENT_AIR)
2670                 goto plan_b;
2671         // Search existing walkable and return it
2672         for(; p.Y>min; p.Y--)
2673         {
2674                 MapNode n = getNodeNoEx(p);
2675                 if(content_walkable(n.d) && n.d != CONTENT_IGNORE)
2676                         return p.Y;
2677         }
2678
2679         // Move to plan b
2680 plan_b:
2681 #endif
2682
2683         /*
2684                 Determine from map generator noise functions
2685         */
2686
2687         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2688         return level;
2689
2690         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2691         //return (s16)level;
2692 }
2693
2694 void ServerMap::createDirs(std::string path)
2695 {
2696         if(fs::CreateAllDirs(path) == false)
2697         {
2698                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2699                                 <<"\""<<path<<"\""<<std::endl;
2700                 throw BaseException("ServerMap failed to create directory");
2701         }
2702 }
2703
2704 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2705 {
2706         char cc[9];
2707         switch(layout)
2708         {
2709                 case 1:
2710                         snprintf(cc, 9, "%.4x%.4x",
2711                                 (unsigned int)pos.X&0xffff,
2712                                 (unsigned int)pos.Y&0xffff);
2713
2714                         return m_savedir + "/sectors/" + cc;
2715                 case 2:
2716                         snprintf(cc, 9, "%.3x/%.3x",
2717                                 (unsigned int)pos.X&0xfff,
2718                                 (unsigned int)pos.Y&0xfff);
2719
2720                         return m_savedir + "/sectors2/" + cc;
2721                 default:
2722                         assert(false);
2723         }
2724 }
2725
2726 v2s16 ServerMap::getSectorPos(std::string dirname)
2727 {
2728         unsigned int x, y;
2729         int r;
2730         size_t spos = dirname.rfind('/') + 1;
2731         assert(spos != std::string::npos);
2732         if(dirname.size() - spos == 8)
2733         {
2734                 // Old layout
2735                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2736         }
2737         else if(dirname.size() - spos == 3)
2738         {
2739                 // New layout
2740                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2741                 // Sign-extend the 12 bit values up to 16 bits...
2742                 if(x&0x800) x|=0xF000;
2743                 if(y&0x800) y|=0xF000;
2744         }
2745         else
2746         {
2747                 assert(false);
2748         }
2749         assert(r == 2);
2750         v2s16 pos((s16)x, (s16)y);
2751         return pos;
2752 }
2753
2754 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2755 {
2756         v2s16 p2d = getSectorPos(sectordir);
2757
2758         if(blockfile.size() != 4){
2759                 throw InvalidFilenameException("Invalid block filename");
2760         }
2761         unsigned int y;
2762         int r = sscanf(blockfile.c_str(), "%4x", &y);
2763         if(r != 1)
2764                 throw InvalidFilenameException("Invalid block filename");
2765         return v3s16(p2d.X, y, p2d.Y);
2766 }
2767
2768 std::string ServerMap::getBlockFilename(v3s16 p)
2769 {
2770         char cc[5];
2771         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2772         return cc;
2773 }
2774
2775 void ServerMap::save(bool only_changed)
2776 {
2777         DSTACK(__FUNCTION_NAME);
2778         if(m_map_saving_enabled == false)
2779         {
2780                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2781                 return;
2782         }
2783
2784         if(only_changed == false)
2785                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2786                                 <<std::endl;
2787
2788         if(only_changed == false || m_map_metadata_changed)
2789         {
2790                 saveMapMeta();
2791         }
2792
2793         u32 sector_meta_count = 0;
2794         u32 block_count = 0;
2795         u32 block_count_all = 0; // Number of blocks in memory
2796
2797         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2798         for(; i.atEnd() == false; i++)
2799         {
2800                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2801                 assert(sector->getId() == MAPSECTOR_SERVER);
2802
2803                 if(sector->differs_from_disk || only_changed == false)
2804                 {
2805                         saveSectorMeta(sector);
2806                         sector_meta_count++;
2807                 }
2808                 core::list<MapBlock*> blocks;
2809                 sector->getBlocks(blocks);
2810                 core::list<MapBlock*>::Iterator j;
2811                 for(j=blocks.begin(); j!=blocks.end(); j++)
2812                 {
2813                         MapBlock *block = *j;
2814
2815                         block_count_all++;
2816
2817                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2818                                         || only_changed == false)
2819                         {
2820                                 saveBlock(block);
2821                                 block_count++;
2822
2823                                 /*dstream<<"ServerMap: Written block ("
2824                                                 <<block->getPos().X<<","
2825                                                 <<block->getPos().Y<<","
2826                                                 <<block->getPos().Z<<")"
2827                                                 <<std::endl;*/
2828                         }
2829                 }
2830         }
2831
2832         /*
2833                 Only print if something happened or saved whole map
2834         */
2835         if(only_changed == false || sector_meta_count != 0
2836                         || block_count != 0)
2837         {
2838                 dstream<<DTIME<<"ServerMap: Written: "
2839                                 <<sector_meta_count<<" sector metadata files, "
2840                                 <<block_count<<" block files"
2841                                 <<", "<<block_count_all<<" blocks in memory."
2842                                 <<std::endl;
2843         }
2844 }
2845
2846 void ServerMap::saveMapMeta()
2847 {
2848         DSTACK(__FUNCTION_NAME);
2849
2850         dstream<<"INFO: ServerMap::saveMapMeta(): "
2851                         <<"seed="<<m_seed
2852                         <<std::endl;
2853
2854         createDirs(m_savedir);
2855
2856         std::string fullpath = m_savedir + "/map_meta.txt";
2857         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2858         if(os.good() == false)
2859         {
2860                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2861                                 <<"could not open"<<fullpath<<std::endl;
2862                 throw FileNotGoodException("Cannot open chunk metadata");
2863         }
2864
2865         Settings params;
2866         params.setU64("seed", m_seed);
2867
2868         params.writeLines(os);
2869
2870         os<<"[end_of_params]\n";
2871
2872         m_map_metadata_changed = false;
2873 }
2874
2875 void ServerMap::loadMapMeta()
2876 {
2877         DSTACK(__FUNCTION_NAME);
2878
2879         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2880                         <<std::endl;
2881
2882         std::string fullpath = m_savedir + "/map_meta.txt";
2883         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2884         if(is.good() == false)
2885         {
2886                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2887                                 <<"could not open"<<fullpath<<std::endl;
2888                 throw FileNotGoodException("Cannot open map metadata");
2889         }
2890
2891         Settings params;
2892
2893         for(;;)
2894         {
2895                 if(is.eof())
2896                         throw SerializationError
2897                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2898                 std::string line;
2899                 std::getline(is, line);
2900                 std::string trimmedline = trim(line);
2901                 if(trimmedline == "[end_of_params]")
2902                         break;
2903                 params.parseConfigLine(line);
2904         }
2905
2906         m_seed = params.getU64("seed");
2907
2908         dstream<<"INFO: ServerMap::loadMapMeta(): "
2909                         <<"seed="<<m_seed
2910                         <<std::endl;
2911 }
2912
2913 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2914 {
2915         DSTACK(__FUNCTION_NAME);
2916         // Format used for writing
2917         u8 version = SER_FMT_VER_HIGHEST;
2918         // Get destination
2919         v2s16 pos = sector->getPos();
2920         std::string dir = getSectorDir(pos);
2921         createDirs(dir);
2922
2923         std::string fullpath = dir + "/meta";
2924         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2925         if(o.good() == false)
2926                 throw FileNotGoodException("Cannot open sector metafile");
2927
2928         sector->serialize(o, version);
2929
2930         sector->differs_from_disk = false;
2931 }
2932
2933 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
2934 {
2935         DSTACK(__FUNCTION_NAME);
2936         // Get destination
2937         v2s16 p2d = getSectorPos(sectordir);
2938
2939         ServerMapSector *sector = NULL;
2940
2941         std::string fullpath = sectordir + "/meta";
2942         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2943         if(is.good() == false)
2944         {
2945                 // If the directory exists anyway, it probably is in some old
2946                 // format. Just go ahead and create the sector.
2947                 if(fs::PathExists(sectordir))
2948                 {
2949                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
2950                                         <<fullpath<<" doesn't exist but directory does."
2951                                         <<" Continuing with a sector with no metadata."
2952                                         <<std::endl;*/
2953                         sector = new ServerMapSector(this, p2d);
2954                         m_sectors.insert(p2d, sector);
2955                 }
2956                 else
2957                 {
2958                         throw FileNotGoodException("Cannot open sector metafile");
2959                 }
2960         }
2961         else
2962         {
2963                 sector = ServerMapSector::deSerialize
2964                                 (is, this, p2d, m_sectors);
2965                 if(save_after_load)
2966                         saveSectorMeta(sector);
2967         }
2968
2969         sector->differs_from_disk = false;
2970
2971         return sector;
2972 }
2973
2974 bool ServerMap::loadSectorMeta(v2s16 p2d)
2975 {
2976         DSTACK(__FUNCTION_NAME);
2977
2978         MapSector *sector = NULL;
2979
2980         // The directory layout we're going to load from.
2981         //  1 - original sectors/xxxxzzzz/
2982         //  2 - new sectors2/xxx/zzz/
2983         //  If we load from anything but the latest structure, we will
2984         //  immediately save to the new one, and remove the old.
2985         int loadlayout = 1;
2986         std::string sectordir1 = getSectorDir(p2d, 1);
2987         std::string sectordir;
2988         if(fs::PathExists(sectordir1))
2989         {
2990                 sectordir = sectordir1;
2991         }
2992         else
2993         {
2994                 loadlayout = 2;
2995                 sectordir = getSectorDir(p2d, 2);
2996         }
2997
2998         try{
2999                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3000         }
3001         catch(InvalidFilenameException &e)
3002         {
3003                 return false;
3004         }
3005         catch(FileNotGoodException &e)
3006         {
3007                 return false;
3008         }
3009         catch(std::exception &e)
3010         {
3011                 return false;
3012         }
3013
3014         return true;
3015 }
3016
3017 #if 0
3018 bool ServerMap::loadSectorFull(v2s16 p2d)
3019 {
3020         DSTACK(__FUNCTION_NAME);
3021
3022         MapSector *sector = NULL;
3023
3024         // The directory layout we're going to load from.
3025         //  1 - original sectors/xxxxzzzz/
3026         //  2 - new sectors2/xxx/zzz/
3027         //  If we load from anything but the latest structure, we will
3028         //  immediately save to the new one, and remove the old.
3029         int loadlayout = 1;
3030         std::string sectordir1 = getSectorDir(p2d, 1);
3031         std::string sectordir;
3032         if(fs::PathExists(sectordir1))
3033         {
3034                 sectordir = sectordir1;
3035         }
3036         else
3037         {
3038                 loadlayout = 2;
3039                 sectordir = getSectorDir(p2d, 2);
3040         }
3041
3042         try{
3043                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3044         }
3045         catch(InvalidFilenameException &e)
3046         {
3047                 return false;
3048         }
3049         catch(FileNotGoodException &e)
3050         {
3051                 return false;
3052         }
3053         catch(std::exception &e)
3054         {
3055                 return false;
3056         }
3057
3058         /*
3059                 Load blocks
3060         */
3061         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3062                         (sectordir);
3063         std::vector<fs::DirListNode>::iterator i2;
3064         for(i2=list2.begin(); i2!=list2.end(); i2++)
3065         {
3066                 // We want files
3067                 if(i2->dir)
3068                         continue;
3069                 try{
3070                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3071                 }
3072                 catch(InvalidFilenameException &e)
3073                 {
3074                         // This catches unknown crap in directory
3075                 }
3076         }
3077
3078         if(loadlayout != 2)
3079         {
3080                 dstream<<"Sector converted to new layout - deleting "<<
3081                         sectordir1<<std::endl;
3082                 fs::RecursiveDelete(sectordir1);
3083         }
3084
3085         return true;
3086 }
3087 #endif
3088
3089 void ServerMap::saveBlock(MapBlock *block)
3090 {
3091         DSTACK(__FUNCTION_NAME);
3092         /*
3093                 Dummy blocks are not written
3094         */
3095         if(block->isDummy())
3096         {
3097                 /*v3s16 p = block->getPos();
3098                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3099                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3100                 return;
3101         }
3102
3103         // Format used for writing
3104         u8 version = SER_FMT_VER_HIGHEST;
3105         // Get destination
3106         v3s16 p3d = block->getPos();
3107
3108         v2s16 p2d(p3d.X, p3d.Z);
3109         std::string sectordir = getSectorDir(p2d);
3110
3111         createDirs(sectordir);
3112
3113         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3114         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3115         if(o.good() == false)
3116                 throw FileNotGoodException("Cannot open block data");
3117
3118         /*
3119                 [0] u8 serialization version
3120                 [1] data
3121         */
3122         o.write((char*)&version, 1);
3123
3124         // Write basic data
3125         block->serialize(o, version);
3126
3127         // Write extra data stored on disk
3128         block->serializeDiskExtra(o, version);
3129
3130         // We just wrote it to the disk so clear modified flag
3131         block->resetModified();
3132 }
3133
3134 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3135 {
3136         DSTACK(__FUNCTION_NAME);
3137
3138         std::string fullpath = sectordir+"/"+blockfile;
3139         try{
3140
3141                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3142                 if(is.good() == false)
3143                         throw FileNotGoodException("Cannot open block file");
3144
3145                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3146                 v2s16 p2d(p3d.X, p3d.Z);
3147
3148                 assert(sector->getPos() == p2d);
3149
3150                 u8 version = SER_FMT_VER_INVALID;
3151                 is.read((char*)&version, 1);
3152
3153                 if(is.fail())
3154                         throw SerializationError("ServerMap::loadBlock(): Failed"
3155                                         " to read MapBlock version");
3156
3157                 /*u32 block_size = MapBlock::serializedLength(version);
3158                 SharedBuffer<u8> data(block_size);
3159                 is.read((char*)*data, block_size);*/
3160
3161                 // This will always return a sector because we're the server
3162                 //MapSector *sector = emergeSector(p2d);
3163
3164                 MapBlock *block = NULL;
3165                 bool created_new = false;
3166                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3167                 if(block == NULL)
3168                 {
3169                         block = sector->createBlankBlockNoInsert(p3d.Y);
3170                         created_new = true;
3171                 }
3172
3173                 // Read basic data
3174                 block->deSerialize(is, version);
3175
3176                 // Read extra data stored on disk
3177                 block->deSerializeDiskExtra(is, version);
3178
3179                 // If it's a new block, insert it to the map
3180                 if(created_new)
3181                         sector->insertBlock(block);
3182
3183                 /*
3184                         Save blocks loaded in old format in new format
3185                 */
3186
3187                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3188                 {
3189                         saveBlock(block);
3190                 }
3191
3192                 // We just loaded it from the disk, so it's up-to-date.
3193                 block->resetModified();
3194
3195         }
3196         catch(SerializationError &e)
3197         {
3198                 dstream<<"WARNING: Invalid block data on disk "
3199                                 <<"fullpath="<<fullpath
3200                                 <<" (SerializationError). "
3201                                 <<"what()="<<e.what()
3202                                 <<std::endl;
3203                                 //" Ignoring. A new one will be generated.
3204                 assert(0);
3205
3206                 // TODO: Backup file; name is in fullpath.
3207         }
3208 }
3209
3210 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3211 {
3212         DSTACK(__FUNCTION_NAME);
3213
3214         v2s16 p2d(blockpos.X, blockpos.Z);
3215
3216         // The directory layout we're going to load from.
3217         //  1 - original sectors/xxxxzzzz/
3218         //  2 - new sectors2/xxx/zzz/
3219         //  If we load from anything but the latest structure, we will
3220         //  immediately save to the new one, and remove the old.
3221         int loadlayout = 1;
3222         std::string sectordir1 = getSectorDir(p2d, 1);
3223         std::string sectordir;
3224         if(fs::PathExists(sectordir1))
3225         {
3226                 sectordir = sectordir1;
3227         }
3228         else
3229         {
3230                 loadlayout = 2;
3231                 sectordir = getSectorDir(p2d, 2);
3232         }
3233
3234         /*
3235                 Make sure sector is loaded
3236         */
3237         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3238         if(sector == NULL)
3239         {
3240                 try{
3241                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3242                 }
3243                 catch(InvalidFilenameException &e)
3244                 {
3245                         return false;
3246                 }
3247                 catch(FileNotGoodException &e)
3248                 {
3249                         return false;
3250                 }
3251                 catch(std::exception &e)
3252                 {
3253                         return false;
3254                 }
3255         }
3256
3257         /*
3258                 Make sure file exists
3259         */
3260
3261         std::string blockfilename = getBlockFilename(blockpos);
3262         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3263                 return NULL;
3264
3265         /*
3266                 Load block
3267         */
3268         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3269         return getBlockNoCreateNoEx(blockpos);
3270 }
3271
3272 void ServerMap::PrintInfo(std::ostream &out)
3273 {
3274         out<<"ServerMap: ";
3275 }
3276
3277 #ifndef SERVER
3278
3279 /*
3280         ClientMap
3281 */
3282
3283 ClientMap::ClientMap(
3284                 Client *client,
3285                 MapDrawControl &control,
3286                 scene::ISceneNode* parent,
3287                 scene::ISceneManager* mgr,
3288                 s32 id
3289 ):
3290         Map(dout_client),
3291         scene::ISceneNode(parent, mgr, id),
3292         m_client(client),
3293         m_control(control),
3294         m_camera_position(0,0,0),
3295         m_camera_direction(0,0,1)
3296 {
3297         m_camera_mutex.Init();
3298         assert(m_camera_mutex.IsInitialized());
3299
3300         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3301                         BS*1000000,BS*1000000,BS*1000000);
3302 }
3303
3304 ClientMap::~ClientMap()
3305 {
3306         /*JMutexAutoLock lock(mesh_mutex);
3307
3308         if(mesh != NULL)
3309         {
3310                 mesh->drop();
3311                 mesh = NULL;
3312         }*/
3313 }
3314
3315 MapSector * ClientMap::emergeSector(v2s16 p2d)
3316 {
3317         DSTACK(__FUNCTION_NAME);
3318         // Check that it doesn't exist already
3319         try{
3320                 return getSectorNoGenerate(p2d);
3321         }
3322         catch(InvalidPositionException &e)
3323         {
3324         }
3325
3326         // Create a sector
3327         ClientMapSector *sector = new ClientMapSector(this, p2d);
3328
3329         {
3330                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3331                 m_sectors.insert(p2d, sector);
3332         }
3333
3334         return sector;
3335 }
3336
3337 #if 0
3338 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3339 {
3340         DSTACK(__FUNCTION_NAME);
3341         ClientMapSector *sector = NULL;
3342
3343         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3344
3345         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3346
3347         if(n != NULL)
3348         {
3349                 sector = (ClientMapSector*)n->getValue();
3350                 assert(sector->getId() == MAPSECTOR_CLIENT);
3351         }
3352         else
3353         {
3354                 sector = new ClientMapSector(this, p2d);
3355                 {
3356                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3357                         m_sectors.insert(p2d, sector);
3358                 }
3359         }
3360
3361         sector->deSerialize(is);
3362 }
3363 #endif
3364
3365 void ClientMap::OnRegisterSceneNode()
3366 {
3367         if(IsVisible)
3368         {
3369                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3370                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3371         }
3372
3373         ISceneNode::OnRegisterSceneNode();
3374 }
3375
3376 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3377 {
3378         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3379         DSTACK(__FUNCTION_NAME);
3380
3381         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3382
3383         /*
3384                 This is called two times per frame, reset on the non-transparent one
3385         */
3386         if(pass == scene::ESNRP_SOLID)
3387         {
3388                 m_last_drawn_sectors.clear();
3389         }
3390
3391         /*
3392                 Get time for measuring timeout.
3393
3394                 Measuring time is very useful for long delays when the
3395                 machine is swapping a lot.
3396         */
3397         int time1 = time(0);
3398
3399         //u32 daynight_ratio = m_client->getDayNightRatio();
3400
3401         m_camera_mutex.Lock();
3402         v3f camera_position = m_camera_position;
3403         v3f camera_direction = m_camera_direction;
3404         m_camera_mutex.Unlock();
3405
3406         /*
3407                 Get all blocks and draw all visible ones
3408         */
3409
3410         v3s16 cam_pos_nodes(
3411                         camera_position.X / BS,
3412                         camera_position.Y / BS,
3413                         camera_position.Z / BS);
3414
3415         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3416
3417         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3418         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3419
3420         // Take a fair amount as we will be dropping more out later
3421         v3s16 p_blocks_min(
3422                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3423                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3424                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3425         v3s16 p_blocks_max(
3426                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3427                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3428                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3429
3430         u32 vertex_count = 0;
3431
3432         // For limiting number of mesh updates per frame
3433         u32 mesh_update_count = 0;
3434
3435         u32 blocks_would_have_drawn = 0;
3436         u32 blocks_drawn = 0;
3437
3438         int timecheck_counter = 0;
3439         core::map<v2s16, MapSector*>::Iterator si;
3440         si = m_sectors.getIterator();
3441         for(; si.atEnd() == false; si++)
3442         {
3443                 {
3444                         timecheck_counter++;
3445                         if(timecheck_counter > 50)
3446                         {
3447                                 timecheck_counter = 0;
3448                                 int time2 = time(0);
3449                                 if(time2 > time1 + 4)
3450                                 {
3451                                         dstream<<"ClientMap::renderMap(): "
3452                                                 "Rendering takes ages, returning."
3453                                                 <<std::endl;
3454                                         return;
3455                                 }
3456                         }
3457                 }
3458
3459                 MapSector *sector = si.getNode()->getValue();
3460                 v2s16 sp = sector->getPos();
3461
3462                 if(m_control.range_all == false)
3463                 {
3464                         if(sp.X < p_blocks_min.X
3465                         || sp.X > p_blocks_max.X
3466                         || sp.Y < p_blocks_min.Z
3467                         || sp.Y > p_blocks_max.Z)
3468                                 continue;
3469                 }
3470
3471                 core::list< MapBlock * > sectorblocks;
3472                 sector->getBlocks(sectorblocks);
3473
3474                 /*
3475                         Draw blocks
3476                 */
3477
3478                 u32 sector_blocks_drawn = 0;
3479
3480                 core::list< MapBlock * >::Iterator i;
3481                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3482                 {
3483                         MapBlock *block = *i;
3484
3485                         /*
3486                                 Compare block position to camera position, skip
3487                                 if not seen on display
3488                         */
3489
3490                         float range = 100000 * BS;
3491                         if(m_control.range_all == false)
3492                                 range = m_control.wanted_range * BS;
3493
3494                         float d = 0.0;
3495                         if(isBlockInSight(block->getPos(), camera_position,
3496                                         camera_direction, range, &d) == false)
3497                         {
3498                                 continue;
3499                         }
3500
3501                         // Okay, this block will be drawn. Reset usage timer.
3502                         block->resetUsageTimer();
3503
3504                         // This is ugly (spherical distance limit?)
3505                         /*if(m_control.range_all == false &&
3506                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3507                                 continue;*/
3508
3509 #if 1
3510                         /*
3511                                 Update expired mesh (used for day/night change)
3512
3513                                 It doesn't work exactly like it should now with the
3514                                 tasked mesh update but whatever.
3515                         */
3516
3517                         bool mesh_expired = false;
3518
3519                         {
3520                                 JMutexAutoLock lock(block->mesh_mutex);
3521
3522                                 mesh_expired = block->getMeshExpired();
3523
3524                                 // Mesh has not been expired and there is no mesh:
3525                                 // block has no content
3526                                 if(block->mesh == NULL && mesh_expired == false)
3527                                         continue;
3528                         }
3529
3530                         f32 faraway = BS*50;
3531                         //f32 faraway = m_control.wanted_range * BS;
3532
3533                         /*
3534                                 This has to be done with the mesh_mutex unlocked
3535                         */
3536                         // Pretty random but this should work somewhat nicely
3537                         if(mesh_expired && (
3538                                         (mesh_update_count < 3
3539                                                 && (d < faraway || mesh_update_count < 2)
3540                                         )
3541                                         ||
3542                                         (m_control.range_all && mesh_update_count < 20)
3543                                 )
3544                         )
3545                         /*if(mesh_expired && mesh_update_count < 6
3546                                         && (d < faraway || mesh_update_count < 3))*/
3547                         {
3548                                 mesh_update_count++;
3549
3550                                 // Mesh has been expired: generate new mesh
3551                                 //block->updateMesh(daynight_ratio);
3552                                 m_client->addUpdateMeshTask(block->getPos());
3553
3554                                 mesh_expired = false;
3555                         }
3556
3557 #endif
3558                         /*
3559                                 Draw the faces of the block
3560                         */
3561                         {
3562                                 JMutexAutoLock lock(block->mesh_mutex);
3563
3564                                 scene::SMesh *mesh = block->mesh;
3565
3566                                 if(mesh == NULL)
3567                                         continue;
3568
3569                                 blocks_would_have_drawn++;
3570                                 if(blocks_drawn >= m_control.wanted_max_blocks
3571                                                 && m_control.range_all == false
3572                                                 && d > m_control.wanted_min_range * BS)
3573                                         continue;
3574
3575                                 blocks_drawn++;
3576                                 sector_blocks_drawn++;
3577
3578                                 u32 c = mesh->getMeshBufferCount();
3579
3580                                 for(u32 i=0; i<c; i++)
3581                                 {
3582                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3583                                         const video::SMaterial& material = buf->getMaterial();
3584                                         video::IMaterialRenderer* rnd =
3585                                                         driver->getMaterialRenderer(material.MaterialType);
3586                                         bool transparent = (rnd && rnd->isTransparent());
3587                                         // Render transparent on transparent pass and likewise.
3588                                         if(transparent == is_transparent_pass)
3589                                         {
3590                                                 /*
3591                                                         This *shouldn't* hurt too much because Irrlicht
3592                                                         doesn't change opengl textures if the old
3593                                                         material is set again.
3594                                                 */
3595                                                 driver->setMaterial(buf->getMaterial());
3596                                                 driver->drawMeshBuffer(buf);
3597                                                 vertex_count += buf->getVertexCount();
3598                                         }
3599                                 }
3600                         }
3601                 } // foreach sectorblocks
3602
3603                 if(sector_blocks_drawn != 0)
3604                 {
3605                         m_last_drawn_sectors[sp] = true;
3606                 }
3607         }
3608
3609         m_control.blocks_drawn = blocks_drawn;
3610         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3611
3612         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3613                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3614 }
3615
3616 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3617                 core::map<v3s16, MapBlock*> *affected_blocks)
3618 {
3619         bool changed = false;
3620         /*
3621                 Add it to all blocks touching it
3622         */
3623         v3s16 dirs[7] = {
3624                 v3s16(0,0,0), // this
3625                 v3s16(0,0,1), // back
3626                 v3s16(0,1,0), // top
3627                 v3s16(1,0,0), // right
3628                 v3s16(0,0,-1), // front
3629                 v3s16(0,-1,0), // bottom
3630                 v3s16(-1,0,0), // left
3631         };
3632         for(u16 i=0; i<7; i++)
3633         {
3634                 v3s16 p2 = p + dirs[i];
3635                 // Block position of neighbor (or requested) node
3636                 v3s16 blockpos = getNodeBlockPos(p2);
3637                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3638                 if(blockref == NULL)
3639                         continue;
3640                 // Relative position of requested node
3641                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3642                 if(blockref->setTempMod(relpos, mod))
3643                 {
3644                         changed = true;
3645                 }
3646         }
3647         if(changed && affected_blocks!=NULL)
3648         {
3649                 for(u16 i=0; i<7; i++)
3650                 {
3651                         v3s16 p2 = p + dirs[i];
3652                         // Block position of neighbor (or requested) node
3653                         v3s16 blockpos = getNodeBlockPos(p2);
3654                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3655                         if(blockref == NULL)
3656                                 continue;
3657                         affected_blocks->insert(blockpos, blockref);
3658                 }
3659         }
3660         return changed;
3661 }
3662
3663 bool ClientMap::clearTempMod(v3s16 p,
3664                 core::map<v3s16, MapBlock*> *affected_blocks)
3665 {
3666         bool changed = false;
3667         v3s16 dirs[7] = {
3668                 v3s16(0,0,0), // this
3669                 v3s16(0,0,1), // back
3670                 v3s16(0,1,0), // top
3671                 v3s16(1,0,0), // right
3672                 v3s16(0,0,-1), // front
3673                 v3s16(0,-1,0), // bottom
3674                 v3s16(-1,0,0), // left
3675         };
3676         for(u16 i=0; i<7; i++)
3677         {
3678                 v3s16 p2 = p + dirs[i];
3679                 // Block position of neighbor (or requested) node
3680                 v3s16 blockpos = getNodeBlockPos(p2);
3681                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3682                 if(blockref == NULL)
3683                         continue;
3684                 // Relative position of requested node
3685                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3686                 if(blockref->clearTempMod(relpos))
3687                 {
3688                         changed = true;
3689                 }
3690         }
3691         if(changed && affected_blocks!=NULL)
3692         {
3693                 for(u16 i=0; i<7; i++)
3694                 {
3695                         v3s16 p2 = p + dirs[i];
3696                         // Block position of neighbor (or requested) node
3697                         v3s16 blockpos = getNodeBlockPos(p2);
3698                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3699                         if(blockref == NULL)
3700                                 continue;
3701                         affected_blocks->insert(blockpos, blockref);
3702                 }
3703         }
3704         return changed;
3705 }
3706
3707 void ClientMap::expireMeshes(bool only_daynight_diffed)
3708 {
3709         TimeTaker timer("expireMeshes()");
3710
3711         core::map<v2s16, MapSector*>::Iterator si;
3712         si = m_sectors.getIterator();
3713         for(; si.atEnd() == false; si++)
3714         {
3715                 MapSector *sector = si.getNode()->getValue();
3716
3717                 core::list< MapBlock * > sectorblocks;
3718                 sector->getBlocks(sectorblocks);
3719
3720                 core::list< MapBlock * >::Iterator i;
3721                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3722                 {
3723                         MapBlock *block = *i;
3724
3725                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3726                         {
3727                                 continue;
3728                         }
3729
3730                         {
3731                                 JMutexAutoLock lock(block->mesh_mutex);
3732                                 if(block->mesh != NULL)
3733                                 {
3734                                         /*block->mesh->drop();
3735                                         block->mesh = NULL;*/
3736                                         block->setMeshExpired(true);
3737                                 }
3738                         }
3739                 }
3740         }
3741 }
3742
3743 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3744 {
3745         assert(mapType() == MAPTYPE_CLIENT);
3746
3747         try{
3748                 v3s16 p = blockpos + v3s16(0,0,0);
3749                 MapBlock *b = getBlockNoCreate(p);
3750                 b->updateMesh(daynight_ratio);
3751                 //b->setMeshExpired(true);
3752         }
3753         catch(InvalidPositionException &e){}
3754         // Leading edge
3755         try{
3756                 v3s16 p = blockpos + v3s16(-1,0,0);
3757                 MapBlock *b = getBlockNoCreate(p);
3758                 b->updateMesh(daynight_ratio);
3759                 //b->setMeshExpired(true);
3760         }
3761         catch(InvalidPositionException &e){}
3762         try{
3763                 v3s16 p = blockpos + v3s16(0,-1,0);
3764                 MapBlock *b = getBlockNoCreate(p);
3765                 b->updateMesh(daynight_ratio);
3766                 //b->setMeshExpired(true);
3767         }
3768         catch(InvalidPositionException &e){}
3769         try{
3770                 v3s16 p = blockpos + v3s16(0,0,-1);
3771                 MapBlock *b = getBlockNoCreate(p);
3772                 b->updateMesh(daynight_ratio);
3773                 //b->setMeshExpired(true);
3774         }
3775         catch(InvalidPositionException &e){}
3776 }
3777
3778 #if 0
3779 /*
3780         Update mesh of block in which the node is, and if the node is at the
3781         leading edge, update the appropriate leading blocks too.
3782 */
3783 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3784 {
3785         v3s16 dirs[4] = {
3786                 v3s16(0,0,0),
3787                 v3s16(-1,0,0),
3788                 v3s16(0,-1,0),
3789                 v3s16(0,0,-1),
3790         };
3791         v3s16 blockposes[4];
3792         for(u32 i=0; i<4; i++)
3793         {
3794                 v3s16 np = nodepos + dirs[i];
3795                 blockposes[i] = getNodeBlockPos(np);
3796                 // Don't update mesh of block if it has been done already
3797                 bool already_updated = false;
3798                 for(u32 j=0; j<i; j++)
3799                 {
3800                         if(blockposes[j] == blockposes[i])
3801                         {
3802                                 already_updated = true;
3803                                 break;
3804                         }
3805                 }
3806                 if(already_updated)
3807                         continue;
3808                 // Update mesh
3809                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3810                 b->updateMesh(daynight_ratio);
3811         }
3812 }
3813 #endif
3814
3815 void ClientMap::PrintInfo(std::ostream &out)
3816 {
3817         out<<"ClientMap: ";
3818 }
3819
3820 #endif // !SERVER
3821
3822 /*
3823         MapVoxelManipulator
3824 */
3825
3826 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3827 {
3828         m_map = map;
3829 }
3830
3831 MapVoxelManipulator::~MapVoxelManipulator()
3832 {
3833         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3834                         <<std::endl;*/
3835 }
3836
3837 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3838 {
3839         TimeTaker timer1("emerge", &emerge_time);
3840
3841         // Units of these are MapBlocks
3842         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3843         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3844
3845         VoxelArea block_area_nodes
3846                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3847
3848         addArea(block_area_nodes);
3849
3850         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3851         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3852         for(s32 x=p_min.X; x<=p_max.X; x++)
3853         {
3854                 v3s16 p(x,y,z);
3855                 core::map<v3s16, bool>::Node *n;
3856                 n = m_loaded_blocks.find(p);
3857                 if(n != NULL)
3858                         continue;
3859
3860                 bool block_data_inexistent = false;
3861                 try
3862                 {
3863                         TimeTaker timer1("emerge load", &emerge_load_time);
3864
3865                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3866                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3867                                         <<" wanted area: ";
3868                         a.print(dstream);
3869                         dstream<<std::endl;*/
3870
3871                         MapBlock *block = m_map->getBlockNoCreate(p);
3872                         if(block->isDummy())
3873                                 block_data_inexistent = true;
3874                         else
3875                                 block->copyTo(*this);
3876                 }
3877                 catch(InvalidPositionException &e)
3878                 {
3879                         block_data_inexistent = true;
3880                 }
3881
3882                 if(block_data_inexistent)
3883                 {
3884                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3885                         // Fill with VOXELFLAG_INEXISTENT
3886                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3887                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3888                         {
3889                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3890                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3891                         }
3892                 }
3893
3894                 m_loaded_blocks.insert(p, !block_data_inexistent);
3895         }
3896
3897         //dstream<<"emerge done"<<std::endl;
3898 }
3899
3900 /*
3901         SUGG: Add an option to only update eg. water and air nodes.
3902               This will make it interfere less with important stuff if
3903                   run on background.
3904 */
3905 void MapVoxelManipulator::blitBack
3906                 (core::map<v3s16, MapBlock*> & modified_blocks)
3907 {
3908         if(m_area.getExtent() == v3s16(0,0,0))
3909                 return;
3910
3911         //TimeTaker timer1("blitBack");
3912
3913         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3914                         <<m_loaded_blocks.size()<<std::endl;*/
3915
3916         /*
3917                 Initialize block cache
3918         */
3919         v3s16 blockpos_last;
3920         MapBlock *block = NULL;
3921         bool block_checked_in_modified = false;
3922
3923         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3924         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3925         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3926         {
3927                 v3s16 p(x,y,z);
3928
3929                 u8 f = m_flags[m_area.index(p)];
3930                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
3931                         continue;
3932
3933                 MapNode &n = m_data[m_area.index(p)];
3934
3935                 v3s16 blockpos = getNodeBlockPos(p);
3936
3937                 try
3938                 {
3939                         // Get block
3940                         if(block == NULL || blockpos != blockpos_last){
3941                                 block = m_map->getBlockNoCreate(blockpos);
3942                                 blockpos_last = blockpos;
3943                                 block_checked_in_modified = false;
3944                         }
3945
3946                         // Calculate relative position in block
3947                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
3948
3949                         // Don't continue if nothing has changed here
3950                         if(block->getNode(relpos) == n)
3951                                 continue;
3952
3953                         //m_map->setNode(m_area.MinEdge + p, n);
3954                         block->setNode(relpos, n);
3955
3956                         /*
3957                                 Make sure block is in modified_blocks
3958                         */
3959                         if(block_checked_in_modified == false)
3960                         {
3961                                 modified_blocks[blockpos] = block;
3962                                 block_checked_in_modified = true;
3963                         }
3964                 }
3965                 catch(InvalidPositionException &e)
3966                 {
3967                 }
3968         }
3969 }
3970
3971 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
3972                 MapVoxelManipulator(map),
3973                 m_create_area(false)
3974 {
3975 }
3976
3977 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
3978 {
3979 }
3980
3981 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3982 {
3983         // Just create the area so that it can be pointed to
3984         VoxelManipulator::emerge(a, caller_id);
3985 }
3986
3987 void ManualMapVoxelManipulator::initialEmerge(
3988                 v3s16 blockpos_min, v3s16 blockpos_max)
3989 {
3990         TimeTaker timer1("initialEmerge", &emerge_time);
3991
3992         // Units of these are MapBlocks
3993         v3s16 p_min = blockpos_min;
3994         v3s16 p_max = blockpos_max;
3995
3996         VoxelArea block_area_nodes
3997                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3998
3999         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
4000         if(size_MB >= 1)
4001         {
4002                 dstream<<"initialEmerge: area: ";
4003                 block_area_nodes.print(dstream);
4004                 dstream<<" ("<<size_MB<<"MB)";
4005                 dstream<<std::endl;
4006         }
4007
4008         addArea(block_area_nodes);
4009
4010         for(s32 z=p_min.Z; z<=p_max.Z; z++)
4011         for(s32 y=p_min.Y; y<=p_max.Y; y++)
4012         for(s32 x=p_min.X; x<=p_max.X; x++)
4013         {
4014                 v3s16 p(x,y,z);
4015                 core::map<v3s16, bool>::Node *n;
4016                 n = m_loaded_blocks.find(p);
4017                 if(n != NULL)
4018                         continue;
4019
4020                 bool block_data_inexistent = false;
4021                 try
4022                 {
4023                         TimeTaker timer1("emerge load", &emerge_load_time);
4024
4025                         MapBlock *block = m_map->getBlockNoCreate(p);
4026                         if(block->isDummy())
4027                                 block_data_inexistent = true;
4028                         else
4029                                 block->copyTo(*this);
4030                 }
4031                 catch(InvalidPositionException &e)
4032                 {
4033                         block_data_inexistent = true;
4034                 }
4035
4036                 if(block_data_inexistent)
4037                 {
4038                         /*
4039                                 Mark area inexistent
4040                         */
4041                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4042                         // Fill with VOXELFLAG_INEXISTENT
4043                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4044                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4045                         {
4046                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4047                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4048                         }
4049                 }
4050
4051                 m_loaded_blocks.insert(p, !block_data_inexistent);
4052         }
4053 }
4054
4055 void ManualMapVoxelManipulator::blitBackAll(
4056                 core::map<v3s16, MapBlock*> * modified_blocks)
4057 {
4058         if(m_area.getExtent() == v3s16(0,0,0))
4059                 return;
4060
4061         /*
4062                 Copy data of all blocks
4063         */
4064         for(core::map<v3s16, bool>::Iterator
4065                         i = m_loaded_blocks.getIterator();
4066                         i.atEnd() == false; i++)
4067         {
4068                 bool existed = i.getNode()->getValue();
4069                 if(existed == false)
4070                         continue;
4071                 v3s16 p = i.getNode()->getKey();
4072                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4073                 if(block == NULL)
4074                 {
4075                         dstream<<"WARNING: "<<__FUNCTION_NAME
4076                                         <<": got NULL block "
4077                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4078                                         <<std::endl;
4079                         continue;
4080                 }
4081
4082                 block->copyFrom(*this);
4083
4084                 if(modified_blocks)
4085                         modified_blocks->insert(p, block);
4086         }
4087 }
4088
4089 //END