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) || n2.d == CONTENT_AIR)
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 and this node to transform queue.
1244                 (it's vital for the node itself to get updated last.)
1245         */
1246         v3s16 dirs[7] = {
1247                 v3s16(0,0,1), // back
1248                 v3s16(0,1,0), // top
1249                 v3s16(1,0,0), // right
1250                 v3s16(0,0,-1), // front
1251                 v3s16(0,-1,0), // bottom
1252                 v3s16(-1,0,0), // left
1253                 v3s16(0,0,0), // self
1254         };
1255         for(u16 i=0; i<7; i++)
1256         {
1257                 try
1258                 {
1259
1260                 v3s16 p2 = p + dirs[i];
1261
1262                 MapNode n2 = getNode(p2);
1263                 if(content_liquid(n2.d) || n2.d == CONTENT_AIR)
1264                 {
1265                         m_transforming_liquid.push_back(p2);
1266                 }
1267
1268                 }catch(InvalidPositionException &e)
1269                 {
1270                 }
1271         }
1272 }
1273
1274 bool Map::addNodeWithEvent(v3s16 p, MapNode n)
1275 {
1276         MapEditEvent event;
1277         event.type = MEET_ADDNODE;
1278         event.p = p;
1279         event.n = n;
1280
1281         bool succeeded = true;
1282         try{
1283                 core::map<v3s16, MapBlock*> modified_blocks;
1284                 addNodeAndUpdate(p, n, modified_blocks);
1285
1286                 // Copy modified_blocks to event
1287                 for(core::map<v3s16, MapBlock*>::Iterator
1288                                 i = modified_blocks.getIterator();
1289                                 i.atEnd()==false; i++)
1290                 {
1291                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1292                 }
1293         }
1294         catch(InvalidPositionException &e){
1295                 succeeded = false;
1296         }
1297
1298         dispatchEvent(&event);
1299
1300         return succeeded;
1301 }
1302
1303 bool Map::removeNodeWithEvent(v3s16 p)
1304 {
1305         MapEditEvent event;
1306         event.type = MEET_REMOVENODE;
1307         event.p = p;
1308
1309         bool succeeded = true;
1310         try{
1311                 core::map<v3s16, MapBlock*> modified_blocks;
1312                 removeNodeAndUpdate(p, modified_blocks);
1313
1314                 // Copy modified_blocks to event
1315                 for(core::map<v3s16, MapBlock*>::Iterator
1316                                 i = modified_blocks.getIterator();
1317                                 i.atEnd()==false; i++)
1318                 {
1319                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1320                 }
1321         }
1322         catch(InvalidPositionException &e){
1323                 succeeded = false;
1324         }
1325
1326         dispatchEvent(&event);
1327
1328         return succeeded;
1329 }
1330
1331 bool Map::dayNightDiffed(v3s16 blockpos)
1332 {
1333         try{
1334                 v3s16 p = blockpos + v3s16(0,0,0);
1335                 MapBlock *b = getBlockNoCreate(p);
1336                 if(b->dayNightDiffed())
1337                         return true;
1338         }
1339         catch(InvalidPositionException &e){}
1340         // Leading edges
1341         try{
1342                 v3s16 p = blockpos + v3s16(-1,0,0);
1343                 MapBlock *b = getBlockNoCreate(p);
1344                 if(b->dayNightDiffed())
1345                         return true;
1346         }
1347         catch(InvalidPositionException &e){}
1348         try{
1349                 v3s16 p = blockpos + v3s16(0,-1,0);
1350                 MapBlock *b = getBlockNoCreate(p);
1351                 if(b->dayNightDiffed())
1352                         return true;
1353         }
1354         catch(InvalidPositionException &e){}
1355         try{
1356                 v3s16 p = blockpos + v3s16(0,0,-1);
1357                 MapBlock *b = getBlockNoCreate(p);
1358                 if(b->dayNightDiffed())
1359                         return true;
1360         }
1361         catch(InvalidPositionException &e){}
1362         // Trailing edges
1363         try{
1364                 v3s16 p = blockpos + v3s16(1,0,0);
1365                 MapBlock *b = getBlockNoCreate(p);
1366                 if(b->dayNightDiffed())
1367                         return true;
1368         }
1369         catch(InvalidPositionException &e){}
1370         try{
1371                 v3s16 p = blockpos + v3s16(0,1,0);
1372                 MapBlock *b = getBlockNoCreate(p);
1373                 if(b->dayNightDiffed())
1374                         return true;
1375         }
1376         catch(InvalidPositionException &e){}
1377         try{
1378                 v3s16 p = blockpos + v3s16(0,0,1);
1379                 MapBlock *b = getBlockNoCreate(p);
1380                 if(b->dayNightDiffed())
1381                         return true;
1382         }
1383         catch(InvalidPositionException &e){}
1384
1385         return false;
1386 }
1387
1388 /*
1389         Updates usage timers
1390 */
1391 void Map::timerUpdate(float dtime, float unload_timeout,
1392                 core::list<v3s16> *unloaded_blocks)
1393 {
1394         bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
1395
1396         core::list<v2s16> sector_deletion_queue;
1397         u32 deleted_blocks_count = 0;
1398         u32 saved_blocks_count = 0;
1399
1400         core::map<v2s16, MapSector*>::Iterator si;
1401
1402         si = m_sectors.getIterator();
1403         for(; si.atEnd() == false; si++)
1404         {
1405                 MapSector *sector = si.getNode()->getValue();
1406
1407                 bool all_blocks_deleted = true;
1408
1409                 core::list<MapBlock*> blocks;
1410                 sector->getBlocks(blocks);
1411                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1412                                 i != blocks.end(); i++)
1413                 {
1414                         MapBlock *block = (*i);
1415
1416                         block->incrementUsageTimer(dtime);
1417
1418                         if(block->getUsageTimer() > unload_timeout)
1419                         {
1420                                 v3s16 p = block->getPos();
1421
1422                                 // Save if modified
1423                                 if(block->getModified() != MOD_STATE_CLEAN
1424                                                 && save_before_unloading)
1425                                 {
1426                                         saveBlock(block);
1427                                         saved_blocks_count++;
1428                                 }
1429
1430                                 // Delete from memory
1431                                 sector->deleteBlock(block);
1432
1433                                 if(unloaded_blocks)
1434                                         unloaded_blocks->push_back(p);
1435
1436                                 deleted_blocks_count++;
1437                         }
1438                         else
1439                         {
1440                                 all_blocks_deleted = false;
1441                         }
1442                 }
1443
1444                 if(all_blocks_deleted)
1445                 {
1446                         sector_deletion_queue.push_back(si.getNode()->getKey());
1447                 }
1448         }
1449
1450         // Finally delete the empty sectors
1451         deleteSectors(sector_deletion_queue);
1452
1453         if(deleted_blocks_count != 0)
1454         {
1455                 PrintInfo(dstream); // ServerMap/ClientMap:
1456                 dstream<<"Unloaded "<<deleted_blocks_count
1457                                 <<" blocks from memory";
1458                 if(save_before_unloading)
1459                         dstream<<", of which "<<saved_blocks_count<<" were written";
1460                 dstream<<"."<<std::endl;
1461         }
1462 }
1463
1464 void Map::deleteSectors(core::list<v2s16> &list)
1465 {
1466         core::list<v2s16>::Iterator j;
1467         for(j=list.begin(); j!=list.end(); j++)
1468         {
1469                 MapSector *sector = m_sectors[*j];
1470                 // If sector is in sector cache, remove it from there
1471                 if(m_sector_cache == sector)
1472                         m_sector_cache = NULL;
1473                 // Remove from map and delete
1474                 m_sectors.remove(*j);
1475                 delete sector;
1476         }
1477 }
1478
1479 #if 0
1480 void Map::unloadUnusedData(float timeout,
1481                 core::list<v3s16> *deleted_blocks)
1482 {
1483         core::list<v2s16> sector_deletion_queue;
1484         u32 deleted_blocks_count = 0;
1485         u32 saved_blocks_count = 0;
1486
1487         core::map<v2s16, MapSector*>::Iterator si = m_sectors.getIterator();
1488         for(; si.atEnd() == false; si++)
1489         {
1490                 MapSector *sector = si.getNode()->getValue();
1491
1492                 bool all_blocks_deleted = true;
1493
1494                 core::list<MapBlock*> blocks;
1495                 sector->getBlocks(blocks);
1496                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1497                                 i != blocks.end(); i++)
1498                 {
1499                         MapBlock *block = (*i);
1500
1501                         if(block->getUsageTimer() > timeout)
1502                         {
1503                                 // Save if modified
1504                                 if(block->getModified() != MOD_STATE_CLEAN)
1505                                 {
1506                                         saveBlock(block);
1507                                         saved_blocks_count++;
1508                                 }
1509                                 // Delete from memory
1510                                 sector->deleteBlock(block);
1511                                 deleted_blocks_count++;
1512                         }
1513                         else
1514                         {
1515                                 all_blocks_deleted = false;
1516                         }
1517                 }
1518
1519                 if(all_blocks_deleted)
1520                 {
1521                         sector_deletion_queue.push_back(si.getNode()->getKey());
1522                 }
1523         }
1524
1525         deleteSectors(sector_deletion_queue);
1526
1527         dstream<<"Map: Unloaded "<<deleted_blocks_count<<" blocks from memory"
1528                         <<", of which "<<saved_blocks_count<<" were wr."
1529                         <<std::endl;
1530
1531         //return sector_deletion_queue.getSize();
1532         //return deleted_blocks_count;
1533 }
1534 #endif
1535
1536 void Map::PrintInfo(std::ostream &out)
1537 {
1538         out<<"Map: ";
1539 }
1540
1541 #define WATER_DROP_BOOST 4
1542
1543 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
1544 {
1545         DSTACK(__FUNCTION_NAME);
1546         //TimeTaker timer("transformLiquids()");
1547
1548         u32 loopcount = 0;
1549         u32 initial_size = m_transforming_liquid.size();
1550
1551         /*if(initial_size != 0)
1552                 dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
1553
1554         while(m_transforming_liquid.size() != 0)
1555         {
1556                 /*
1557                         Get a queued transforming liquid node
1558                 */
1559                 v3s16 p0 = m_transforming_liquid.pop_front();
1560
1561                 MapNode n0 = getNodeNoEx(p0);
1562
1563                 // Don't deal with non-liquids
1564                 if(content_liquid(n0.d) == false)
1565                         continue;
1566
1567                 bool is_source = !content_flowing_liquid(n0.d);
1568
1569                 u8 liquid_level = 8;
1570                 if(is_source == false)
1571                         liquid_level = n0.param2 & 0x0f;
1572
1573                 // Turn possible source into non-source
1574                 u8 nonsource_c = make_liquid_flowing(n0.d);
1575
1576                 /*
1577                         If not source, check that some node flows into this one
1578                         and what is the level of liquid in this one
1579                 */
1580                 if(is_source == false)
1581                 {
1582                         s8 new_liquid_level_max = -1;
1583
1584                         v3s16 dirs_from[5] = {
1585                                 v3s16(0,1,0), // top
1586                                 v3s16(0,0,1), // back
1587                                 v3s16(1,0,0), // right
1588                                 v3s16(0,0,-1), // front
1589                                 v3s16(-1,0,0), // left
1590                         };
1591                         for(u16 i=0; i<5; i++)
1592                         {
1593                                 bool from_top = (i==0);
1594
1595                                 v3s16 p2 = p0 + dirs_from[i];
1596                                 MapNode n2 = getNodeNoEx(p2);
1597
1598                                 if(content_liquid(n2.d))
1599                                 {
1600                                         u8 n2_nonsource_c = make_liquid_flowing(n2.d);
1601                                         // Check that the liquids are the same type
1602                                         if(n2_nonsource_c != nonsource_c)
1603                                         {
1604                                                 dstream<<"WARNING: Not handling: different liquids"
1605                                                                 " collide"<<std::endl;
1606                                                 continue;
1607                                         }
1608                                         bool n2_is_source = !content_flowing_liquid(n2.d);
1609                                         s8 n2_liquid_level = 8;
1610                                         if(n2_is_source == false)
1611                                                 n2_liquid_level = n2.param2 & 0x07;
1612
1613                                         s8 new_liquid_level = -1;
1614                                         if(from_top)
1615                                         {
1616                                                 //new_liquid_level = 7;
1617                                                 if(n2_liquid_level >= 7 - WATER_DROP_BOOST)
1618                                                         new_liquid_level = 7;
1619                                                 else
1620                                                         new_liquid_level = n2_liquid_level + WATER_DROP_BOOST;
1621                                         }
1622                                         else if(n2_liquid_level > 0)
1623                                         {
1624                                                 new_liquid_level = n2_liquid_level - 1;
1625                                         }
1626
1627                                         if(new_liquid_level > new_liquid_level_max)
1628                                                 new_liquid_level_max = new_liquid_level;
1629                                 }
1630                         } //for
1631
1632                         /*
1633                                 If liquid level should be something else, update it and
1634                                 add all the neighboring water nodes to the transform queue.
1635                         */
1636                         if(new_liquid_level_max != liquid_level)
1637                         {
1638                                 if(new_liquid_level_max == -1)
1639                                 {
1640                                         // Remove water alltoghether
1641                                         n0.d = CONTENT_AIR;
1642                                         n0.param2 = 0;
1643                                         setNode(p0, n0);
1644                                 }
1645                                 else
1646                                 {
1647                                         n0.param2 = new_liquid_level_max;
1648                                         setNode(p0, n0);
1649                                 }
1650
1651                                 // Block has been modified
1652                                 {
1653                                         v3s16 blockpos = getNodeBlockPos(p0);
1654                                         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1655                                         if(block != NULL)
1656                                                 modified_blocks.insert(blockpos, block);
1657                                 }
1658
1659                                 /*
1660                                         Add neighboring non-source liquid nodes to transform queue.
1661                                 */
1662                                 v3s16 dirs[6] = {
1663                                         v3s16(0,0,1), // back
1664                                         v3s16(0,1,0), // top
1665                                         v3s16(1,0,0), // right
1666                                         v3s16(0,0,-1), // front
1667                                         v3s16(0,-1,0), // bottom
1668                                         v3s16(-1,0,0), // left
1669                                 };
1670                                 for(u16 i=0; i<6; i++)
1671                                 {
1672                                         v3s16 p2 = p0 + dirs[i];
1673
1674                                         MapNode n2 = getNodeNoEx(p2);
1675                                         if(content_flowing_liquid(n2.d))
1676                                         {
1677                                                 m_transforming_liquid.push_back(p2);
1678                                         }
1679                                 }
1680                         }
1681                 }
1682
1683                 // Get a new one from queue if the node has turned into non-water
1684                 if(content_liquid(n0.d) == false)
1685                         continue;
1686
1687                 /*
1688                         Flow water from this node
1689                 */
1690                 v3s16 dirs_to[5] = {
1691                         v3s16(0,-1,0), // bottom
1692                         v3s16(0,0,1), // back
1693                         v3s16(1,0,0), // right
1694                         v3s16(0,0,-1), // front
1695                         v3s16(-1,0,0), // left
1696                 };
1697                 for(u16 i=0; i<5; i++)
1698                 {
1699                         bool to_bottom = (i == 0);
1700
1701                         // If liquid is at lowest possible height, it's not going
1702                         // anywhere except down
1703                         if(liquid_level == 0 && to_bottom == false)
1704                                 continue;
1705
1706                         u8 liquid_next_level = 0;
1707                         // If going to bottom
1708                         if(to_bottom)
1709                         {
1710                                 //liquid_next_level = 7;
1711                                 if(liquid_level >= 7 - WATER_DROP_BOOST)
1712                                         liquid_next_level = 7;
1713                                 else
1714                                         liquid_next_level = liquid_level + WATER_DROP_BOOST;
1715                         }
1716                         else
1717                                 liquid_next_level = liquid_level - 1;
1718
1719                         bool n2_changed = false;
1720                         bool flowed = false;
1721
1722                         v3s16 p2 = p0 + dirs_to[i];
1723
1724                         MapNode n2 = getNodeNoEx(p2);
1725                         //dstream<<"[1] n2.param="<<(int)n2.param<<std::endl;
1726
1727                         if(content_liquid(n2.d))
1728                         {
1729                                 u8 n2_nonsource_c = make_liquid_flowing(n2.d);
1730                                 // Check that the liquids are the same type
1731                                 if(n2_nonsource_c != nonsource_c)
1732                                 {
1733                                         dstream<<"WARNING: Not handling: different liquids"
1734                                                         " collide"<<std::endl;
1735                                         continue;
1736                                 }
1737                                 bool n2_is_source = !content_flowing_liquid(n2.d);
1738                                 u8 n2_liquid_level = 8;
1739                                 if(n2_is_source == false)
1740                                         n2_liquid_level = n2.param2 & 0x07;
1741
1742                                 if(to_bottom)
1743                                 {
1744                                         flowed = true;
1745                                 }
1746
1747                                 if(n2_is_source)
1748                                 {
1749                                         // Just flow into the source, nothing changes.
1750                                         // n2_changed is not set because destination didn't change
1751                                         flowed = true;
1752                                 }
1753                                 else
1754                                 {
1755                                         if(liquid_next_level > liquid_level)
1756                                         {
1757                                                 n2.param2 = liquid_next_level;
1758                                                 setNode(p2, n2);
1759
1760                                                 n2_changed = true;
1761                                                 flowed = true;
1762                                         }
1763                                 }
1764                         }
1765                         else if(n2.d == CONTENT_AIR)
1766                         {
1767                                 n2.d = nonsource_c;
1768                                 n2.param2 = liquid_next_level;
1769                                 setNode(p2, n2);
1770
1771                                 n2_changed = true;
1772                                 flowed = true;
1773                         }
1774
1775                         //dstream<<"[2] n2.param="<<(int)n2.param<<std::endl;
1776
1777                         if(n2_changed)
1778                         {
1779                                 m_transforming_liquid.push_back(p2);
1780
1781                                 v3s16 blockpos = getNodeBlockPos(p2);
1782                                 MapBlock *block = getBlockNoCreateNoEx(blockpos);
1783                                 if(block != NULL)
1784                                         modified_blocks.insert(blockpos, block);
1785                         }
1786
1787                         // If n2_changed to bottom, don't flow anywhere else
1788                         if(to_bottom && flowed && !is_source)
1789                                 break;
1790                 }
1791
1792                 loopcount++;
1793                 //if(loopcount >= 100000)
1794                 if(loopcount >= initial_size * 1)
1795                         break;
1796         }
1797         //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
1798 }
1799
1800 NodeMetadata* Map::getNodeMetadata(v3s16 p)
1801 {
1802         v3s16 blockpos = getNodeBlockPos(p);
1803         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1804         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1805         if(block == NULL)
1806         {
1807                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1808                                 <<std::endl;
1809                 return NULL;
1810         }
1811         NodeMetadata *meta = block->m_node_metadata.get(p_rel);
1812         return meta;
1813 }
1814
1815 void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
1816 {
1817         v3s16 blockpos = getNodeBlockPos(p);
1818         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1819         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1820         if(block == NULL)
1821         {
1822                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1823                                 <<std::endl;
1824                 return;
1825         }
1826         block->m_node_metadata.set(p_rel, meta);
1827 }
1828
1829 void Map::removeNodeMetadata(v3s16 p)
1830 {
1831         v3s16 blockpos = getNodeBlockPos(p);
1832         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1833         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1834         if(block == NULL)
1835         {
1836                 dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
1837                                 <<std::endl;
1838                 return;
1839         }
1840         block->m_node_metadata.remove(p_rel);
1841 }
1842
1843 void Map::nodeMetadataStep(float dtime,
1844                 core::map<v3s16, MapBlock*> &changed_blocks)
1845 {
1846         /*
1847                 NOTE:
1848                 Currently there is no way to ensure that all the necessary
1849                 blocks are loaded when this is run. (They might get unloaded)
1850                 NOTE: ^- Actually, that might not be so. In a quick test it
1851                 reloaded a block with a furnace when I walked back to it from
1852                 a distance.
1853         */
1854         core::map<v2s16, MapSector*>::Iterator si;
1855         si = m_sectors.getIterator();
1856         for(; si.atEnd() == false; si++)
1857         {
1858                 MapSector *sector = si.getNode()->getValue();
1859                 core::list< MapBlock * > sectorblocks;
1860                 sector->getBlocks(sectorblocks);
1861                 core::list< MapBlock * >::Iterator i;
1862                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
1863                 {
1864                         MapBlock *block = *i;
1865                         bool changed = block->m_node_metadata.step(dtime);
1866                         if(changed)
1867                                 changed_blocks[block->getPos()] = block;
1868                 }
1869         }
1870 }
1871
1872 /*
1873         ServerMap
1874 */
1875
1876 ServerMap::ServerMap(std::string savedir):
1877         Map(dout_server),
1878         m_seed(0),
1879         m_map_metadata_changed(true)
1880 {
1881         dstream<<__FUNCTION_NAME<<std::endl;
1882
1883         //m_chunksize = 8; // Takes a few seconds
1884
1885         m_seed = (((u64)(myrand()%0xffff)<<0)
1886                         + ((u64)(myrand()%0xffff)<<16)
1887                         + ((u64)(myrand()%0xffff)<<32)
1888                         + ((u64)(myrand()%0xffff)<<48));
1889
1890         /*
1891                 Experimental and debug stuff
1892         */
1893
1894         {
1895         }
1896
1897         /*
1898                 Try to load map; if not found, create a new one.
1899         */
1900
1901         m_savedir = savedir;
1902         m_map_saving_enabled = false;
1903
1904         try
1905         {
1906                 // If directory exists, check contents and load if possible
1907                 if(fs::PathExists(m_savedir))
1908                 {
1909                         // If directory is empty, it is safe to save into it.
1910                         if(fs::GetDirListing(m_savedir).size() == 0)
1911                         {
1912                                 dstream<<DTIME<<"Server: Empty save directory is valid."
1913                                                 <<std::endl;
1914                                 m_map_saving_enabled = true;
1915                         }
1916                         else
1917                         {
1918                                 try{
1919                                         // Load map metadata (seed, chunksize)
1920                                         loadMapMeta();
1921                                 }
1922                                 catch(FileNotGoodException &e){
1923                                         dstream<<DTIME<<"WARNING: Could not load map metadata"
1924                                                         //<<" Disabling chunk-based generator."
1925                                                         <<std::endl;
1926                                         //m_chunksize = 0;
1927                                 }
1928
1929                                 /*try{
1930                                         // Load chunk metadata
1931                                         loadChunkMeta();
1932                                 }
1933                                 catch(FileNotGoodException &e){
1934                                         dstream<<DTIME<<"WARNING: Could not load chunk metadata."
1935                                                         <<" Disabling chunk-based generator."
1936                                                         <<std::endl;
1937                                         m_chunksize = 0;
1938                                 }*/
1939
1940                                 /*dstream<<DTIME<<"Server: Successfully loaded chunk "
1941                                                 "metadata and sector (0,0) from "<<savedir<<
1942                                                 ", assuming valid save directory."
1943                                                 <<std::endl;*/
1944
1945                                 dstream<<DTIME<<"INFO: Server: Successfully loaded map "
1946                                                 <<"and chunk metadata from "<<savedir
1947                                                 <<", assuming valid save directory."
1948                                                 <<std::endl;
1949
1950                                 m_map_saving_enabled = true;
1951                                 // Map loaded, not creating new one
1952                                 return;
1953                         }
1954                 }
1955                 // If directory doesn't exist, it is safe to save to it
1956                 else{
1957                         m_map_saving_enabled = true;
1958                 }
1959         }
1960         catch(std::exception &e)
1961         {
1962                 dstream<<DTIME<<"WARNING: Server: Failed to load map from "<<savedir
1963                                 <<", exception: "<<e.what()<<std::endl;
1964                 dstream<<"Please remove the map or fix it."<<std::endl;
1965                 dstream<<"WARNING: Map saving will be disabled."<<std::endl;
1966         }
1967
1968         dstream<<DTIME<<"INFO: Initializing new map."<<std::endl;
1969
1970         // Create zero sector
1971         emergeSector(v2s16(0,0));
1972
1973         // Initially write whole map
1974         save(false);
1975 }
1976
1977 ServerMap::~ServerMap()
1978 {
1979         dstream<<__FUNCTION_NAME<<std::endl;
1980
1981         try
1982         {
1983                 if(m_map_saving_enabled)
1984                 {
1985                         // Save only changed parts
1986                         save(true);
1987                         dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
1988                 }
1989                 else
1990                 {
1991                         dstream<<DTIME<<"Server: map not saved"<<std::endl;
1992                 }
1993         }
1994         catch(std::exception &e)
1995         {
1996                 dstream<<DTIME<<"Server: Failed to save map to "<<m_savedir
1997                                 <<", exception: "<<e.what()<<std::endl;
1998         }
1999
2000 #if 0
2001         /*
2002                 Free all MapChunks
2003         */
2004         core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
2005         for(; i.atEnd() == false; i++)
2006         {
2007                 MapChunk *chunk = i.getNode()->getValue();
2008                 delete chunk;
2009         }
2010 #endif
2011 }
2012
2013 void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
2014 {
2015         /*dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2016                         <<blockpos.Z<<")"<<std::endl;*/
2017
2018         // Do nothing if not inside limits (+-1 because of neighbors)
2019         if(blockpos_over_limit(blockpos - v3s16(1,1,1)) ||
2020                 blockpos_over_limit(blockpos + v3s16(1,1,1)))
2021         {
2022                 data->no_op = true;
2023                 return;
2024         }
2025
2026         data->no_op = false;
2027         data->seed = m_seed;
2028         data->blockpos = blockpos;
2029
2030         /*
2031                 Create the whole area of this and the neighboring blocks
2032         */
2033         {
2034                 //TimeTaker timer("initBlockMake() create area");
2035
2036                 for(s16 x=-1; x<=1; x++)
2037                 for(s16 z=-1; z<=1; z++)
2038                 {
2039                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2040                         // Sector metadata is loaded from disk if not already loaded.
2041                         ServerMapSector *sector = createSector(sectorpos);
2042                         assert(sector);
2043
2044                         for(s16 y=-1; y<=1; y++)
2045                         {
2046                                 //MapBlock *block = createBlock(blockpos);
2047                                 // 1) get from memory, 2) load from disk
2048                                 MapBlock *block = emergeBlock(blockpos, false);
2049                                 // 3) create a blank one
2050                                 if(block == NULL)
2051                                         block = createBlock(blockpos);
2052
2053                                 // Lighting will not be valid after make_chunk is called
2054                                 block->setLightingExpired(true);
2055                                 // Lighting will be calculated
2056                                 //block->setLightingExpired(false);
2057
2058                                 /*
2059                                         Block gets sunlight if this is true.
2060
2061                                         This should be set to true when the top side of a block
2062                                         is completely exposed to the sky.
2063                                 */
2064                                 block->setIsUnderground(false);
2065                         }
2066                 }
2067         }
2068
2069         /*
2070                 Now we have a big empty area.
2071
2072                 Make a ManualMapVoxelManipulator that contains this and the
2073                 neighboring blocks
2074         */
2075
2076         // The area that contains this block and it's neighbors
2077         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2078         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2079
2080         data->vmanip = new ManualMapVoxelManipulator(this);
2081         //data->vmanip->setMap(this);
2082
2083         // Add the area
2084         {
2085                 //TimeTaker timer("initBlockMake() initialEmerge");
2086                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2087         }
2088
2089         // Data is ready now.
2090 }
2091
2092 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2093                 core::map<v3s16, MapBlock*> &changed_blocks)
2094 {
2095         v3s16 blockpos = data->blockpos;
2096         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2097                         <<blockpos.Z<<")"<<std::endl;*/
2098
2099         if(data->no_op)
2100         {
2101                 //dstream<<"finishBlockMake(): no-op"<<std::endl;
2102                 return NULL;
2103         }
2104
2105         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2106
2107         /*dstream<<"Resulting vmanip:"<<std::endl;
2108         data->vmanip.print(dstream);*/
2109
2110         /*
2111                 Blit generated stuff to map
2112                 NOTE: blitBackAll adds nearly everything to changed_blocks
2113         */
2114         {
2115                 // 70ms @cs=8
2116                 //TimeTaker timer("finishBlockMake() blitBackAll");
2117                 data->vmanip->blitBackAll(&changed_blocks);
2118         }
2119
2120         if(enable_mapgen_debug_info)
2121                 dstream<<"finishBlockMake: changed_blocks.size()="
2122                                 <<changed_blocks.size()<<std::endl;
2123
2124         /*
2125                 Copy transforming liquid information
2126         */
2127         while(data->transforming_liquid.size() > 0)
2128         {
2129                 v3s16 p = data->transforming_liquid.pop_front();
2130                 m_transforming_liquid.push_back(p);
2131         }
2132
2133         /*
2134                 Get central block
2135         */
2136         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2137         assert(block);
2138
2139         /*
2140                 Set is_underground flag for lighting with sunlight
2141         */
2142
2143         block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2144
2145         /*
2146                 Add sunlight to central block.
2147                 This makes in-dark-spawning monsters to not flood the whole thing.
2148                 Do not spread the light, though.
2149         */
2150         /*core::map<v3s16, bool> light_sources;
2151         bool black_air_left = false;
2152         block->propagateSunlight(light_sources, true, &black_air_left);*/
2153
2154         /*
2155                 NOTE: Lighting and object adding shouldn't really be here, but
2156                 lighting is a bit tricky to move properly to makeBlock.
2157                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2158                       - There needs to be some way for makeBlock to report back if
2159                             the lighting update is going further down because of the
2160                                 new block blocking light
2161         */
2162
2163         /*
2164                 Update lighting
2165                 NOTE: This takes ~60ms, TODO: Investigate why
2166         */
2167         {
2168                 TimeTaker t("finishBlockMake lighting update");
2169
2170                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2171 #if 1
2172                 // Center block
2173                 lighting_update_blocks.insert(block->getPos(), block);
2174 #endif
2175 #if 0
2176                 // All modified blocks
2177                 // NOTE: Should this be done? If this is not done, then the lighting
2178                 // of the others will be updated in a different place, one by one, i
2179                 // think... or they might not? Well, at least they are left marked as
2180                 // "lighting expired"; it seems that is not handled at all anywhere,
2181                 // so enabling this will slow it down A LOT because otherwise it
2182                 // would not do this at all. This causes the black trees.
2183                 for(core::map<v3s16, MapBlock*>::Iterator
2184                                 i = changed_blocks.getIterator();
2185                                 i.atEnd() == false; i++)
2186                 {
2187                         lighting_update_blocks.insert(i.getNode()->getKey(),
2188                                         i.getNode()->getValue());
2189                 }
2190 #endif
2191                 updateLighting(lighting_update_blocks, changed_blocks);
2192
2193                 if(enable_mapgen_debug_info == false)
2194                         t.stop(true); // Hide output
2195         }
2196
2197         /*
2198                 Add random objects to block
2199         */
2200         mapgen::add_random_objects(block);
2201
2202         /*
2203                 Go through changed blocks
2204         */
2205         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2206                         i.atEnd() == false; i++)
2207         {
2208                 MapBlock *block = i.getNode()->getValue();
2209                 assert(block);
2210                 /*
2211                         Update day/night difference cache of the MapBlocks
2212                 */
2213                 block->updateDayNightDiff();
2214                 /*
2215                         Set block as modified
2216                 */
2217                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2218         }
2219
2220         /*
2221                 Set central block as generated
2222         */
2223         block->setGenerated(true);
2224
2225         /*
2226                 Save changed parts of map
2227                 NOTE: Will be saved later.
2228         */
2229         //save(true);
2230
2231         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2232                         <<blockpos.Z<<")"<<std::endl;*/
2233
2234         return block;
2235 }
2236
2237 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2238 {
2239         DSTACKF("%s: p2d=(%d,%d)",
2240                         __FUNCTION_NAME,
2241                         p2d.X, p2d.Y);
2242
2243         /*
2244                 Check if it exists already in memory
2245         */
2246         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2247         if(sector != NULL)
2248                 return sector;
2249
2250         /*
2251                 Try to load it from disk (with blocks)
2252         */
2253         //if(loadSectorFull(p2d) == true)
2254
2255         /*
2256                 Try to load metadata from disk
2257         */
2258         if(loadSectorMeta(p2d) == true)
2259         {
2260                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2261                 if(sector == NULL)
2262                 {
2263                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2264                         throw InvalidPositionException("");
2265                 }
2266                 return sector;
2267         }
2268
2269         /*
2270                 Do not create over-limit
2271         */
2272         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2273         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2274         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2275         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2276                 throw InvalidPositionException("createSector(): pos. over limit");
2277
2278         /*
2279                 Generate blank sector
2280         */
2281
2282         sector = new ServerMapSector(this, p2d);
2283
2284         // Sector position on map in nodes
2285         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2286
2287         /*
2288                 Insert to container
2289         */
2290         m_sectors.insert(p2d, sector);
2291
2292         return sector;
2293 }
2294
2295 /*
2296         This is a quick-hand function for calling makeBlock().
2297 */
2298 MapBlock * ServerMap::generateBlock(
2299                 v3s16 p,
2300                 core::map<v3s16, MapBlock*> &modified_blocks
2301 )
2302 {
2303         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2304
2305         /*dstream<<"generateBlock(): "
2306                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2307                         <<std::endl;*/
2308
2309         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2310
2311         TimeTaker timer("generateBlock");
2312
2313         //MapBlock *block = original_dummy;
2314
2315         v2s16 p2d(p.X, p.Z);
2316         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2317
2318         /*
2319                 Do not generate over-limit
2320         */
2321         if(blockpos_over_limit(p))
2322         {
2323                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2324                 throw InvalidPositionException("generateBlock(): pos. over limit");
2325         }
2326
2327         /*
2328                 Create block make data
2329         */
2330         mapgen::BlockMakeData data;
2331         initBlockMake(&data, p);
2332
2333         /*
2334                 Generate block
2335         */
2336         {
2337                 TimeTaker t("mapgen::make_block()");
2338                 mapgen::make_block(&data);
2339
2340                 if(enable_mapgen_debug_info == false)
2341                         t.stop(true); // Hide output
2342         }
2343
2344         /*
2345                 Blit data back on map, update lighting, add mobs and whatever this does
2346         */
2347         finishBlockMake(&data, modified_blocks);
2348
2349         /*
2350                 Get central block
2351         */
2352         MapBlock *block = getBlockNoCreateNoEx(p);
2353
2354 #if 0
2355         /*
2356                 Check result
2357         */
2358         if(block)
2359         {
2360                 bool erroneus_content = false;
2361                 for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2362                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2363                 for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2364                 {
2365                         v3s16 p(x0,y0,z0);
2366                         MapNode n = block->getNode(p);
2367                         if(n.d == CONTENT_IGNORE)
2368                         {
2369                                 dstream<<"CONTENT_IGNORE at "
2370                                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2371                                                 <<std::endl;
2372                                 erroneus_content = true;
2373                                 assert(0);
2374                         }
2375                 }
2376                 if(erroneus_content)
2377                 {
2378                         assert(0);
2379                 }
2380         }
2381 #endif
2382
2383 #if 0
2384         /*
2385                 Generate a completely empty block
2386         */
2387         if(block)
2388         {
2389                 for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2390                 for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2391                 {
2392                         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2393                         {
2394                                 MapNode n;
2395                                 if(y0%2==0)
2396                                         n.d = CONTENT_AIR;
2397                                 else
2398                                         n.d = CONTENT_STONE;
2399                                 block->setNode(v3s16(x0,y0,z0), n);
2400                         }
2401                 }
2402         }
2403 #endif
2404
2405         if(enable_mapgen_debug_info == false)
2406                 timer.stop(true); // Hide output
2407
2408         return block;
2409 }
2410
2411 MapBlock * ServerMap::createBlock(v3s16 p)
2412 {
2413         DSTACKF("%s: p=(%d,%d,%d)",
2414                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2415
2416         /*
2417                 Do not create over-limit
2418         */
2419         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2420         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2421         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2422         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2423         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2424         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2425                 throw InvalidPositionException("createBlock(): pos. over limit");
2426
2427         v2s16 p2d(p.X, p.Z);
2428         s16 block_y = p.Y;
2429         /*
2430                 This will create or load a sector if not found in memory.
2431                 If block exists on disk, it will be loaded.
2432
2433                 NOTE: On old save formats, this will be slow, as it generates
2434                       lighting on blocks for them.
2435         */
2436         ServerMapSector *sector;
2437         try{
2438                 sector = (ServerMapSector*)createSector(p2d);
2439                 assert(sector->getId() == MAPSECTOR_SERVER);
2440         }
2441         catch(InvalidPositionException &e)
2442         {
2443                 dstream<<"createBlock: createSector() failed"<<std::endl;
2444                 throw e;
2445         }
2446         /*
2447                 NOTE: This should not be done, or at least the exception
2448                 should not be passed on as std::exception, because it
2449                 won't be catched at all.
2450         */
2451         /*catch(std::exception &e)
2452         {
2453                 dstream<<"createBlock: createSector() failed: "
2454                                 <<e.what()<<std::endl;
2455                 throw e;
2456         }*/
2457
2458         /*
2459                 Try to get a block from the sector
2460         */
2461
2462         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2463         if(block)
2464         {
2465                 if(block->isDummy())
2466                         block->unDummify();
2467                 return block;
2468         }
2469         // Create blank
2470         block = sector->createBlankBlock(block_y);
2471         return block;
2472 }
2473
2474 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2475 {
2476         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2477                         __FUNCTION_NAME,
2478                         p.X, p.Y, p.Z, allow_generate);
2479
2480         {
2481                 MapBlock *block = getBlockNoCreateNoEx(p);
2482                 if(block)
2483                         return block;
2484         }
2485
2486         {
2487                 MapBlock *block = loadBlock(p);
2488                 if(block)
2489                         return block;
2490         }
2491
2492         if(allow_generate)
2493         {
2494                 core::map<v3s16, MapBlock*> modified_blocks;
2495                 MapBlock *block = generateBlock(p, modified_blocks);
2496                 if(block)
2497                 {
2498                         MapEditEvent event;
2499                         event.type = MEET_OTHER;
2500                         event.p = p;
2501
2502                         // Copy modified_blocks to event
2503                         for(core::map<v3s16, MapBlock*>::Iterator
2504                                         i = modified_blocks.getIterator();
2505                                         i.atEnd()==false; i++)
2506                         {
2507                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2508                         }
2509
2510                         // Queue event
2511                         dispatchEvent(&event);
2512
2513                         return block;
2514                 }
2515         }
2516
2517         return NULL;
2518 }
2519
2520 #if 0
2521         /*
2522                 Do not generate over-limit
2523         */
2524         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2525         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2526         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2527         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2528         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2529         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2530                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2531
2532         v2s16 p2d(p.X, p.Z);
2533         s16 block_y = p.Y;
2534         /*
2535                 This will create or load a sector if not found in memory.
2536                 If block exists on disk, it will be loaded.
2537         */
2538         ServerMapSector *sector;
2539         try{
2540                 sector = createSector(p2d);
2541                 //sector = emergeSector(p2d, changed_blocks);
2542         }
2543         catch(InvalidPositionException &e)
2544         {
2545                 dstream<<"emergeBlock: createSector() failed: "
2546                                 <<e.what()<<std::endl;
2547                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2548                                 <<std::endl
2549                                 <<"You could try to delete it."<<std::endl;
2550                 throw e;
2551         }
2552         catch(VersionMismatchException &e)
2553         {
2554                 dstream<<"emergeBlock: createSector() failed: "
2555                                 <<e.what()<<std::endl;
2556                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2557                                 <<std::endl
2558                                 <<"You could try to delete it."<<std::endl;
2559                 throw e;
2560         }
2561
2562         /*
2563                 Try to get a block from the sector
2564         */
2565
2566         bool does_not_exist = false;
2567         bool lighting_expired = false;
2568         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2569
2570         // If not found, try loading from disk
2571         if(block == NULL)
2572         {
2573                 block = loadBlock(p);
2574         }
2575
2576         // Handle result
2577         if(block == NULL)
2578         {
2579                 does_not_exist = true;
2580         }
2581         else if(block->isDummy() == true)
2582         {
2583                 does_not_exist = true;
2584         }
2585         else if(block->getLightingExpired())
2586         {
2587                 lighting_expired = true;
2588         }
2589         else
2590         {
2591                 // Valid block
2592                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2593                 return block;
2594         }
2595
2596         /*
2597                 If block was not found on disk and not going to generate a
2598                 new one, make sure there is a dummy block in place.
2599         */
2600         if(only_from_disk && (does_not_exist || lighting_expired))
2601         {
2602                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2603
2604                 if(block == NULL)
2605                 {
2606                         // Create dummy block
2607                         block = new MapBlock(this, p, true);
2608
2609                         // Add block to sector
2610                         sector->insertBlock(block);
2611                 }
2612                 // Done.
2613                 return block;
2614         }
2615
2616         //dstream<<"Not found on disk, generating."<<std::endl;
2617         // 0ms
2618         //TimeTaker("emergeBlock() generate");
2619
2620         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2621
2622         /*
2623                 If the block doesn't exist, generate the block.
2624         */
2625         if(does_not_exist)
2626         {
2627                 block = generateBlock(p, block, sector, changed_blocks,
2628                                 lighting_invalidated_blocks);
2629         }
2630
2631         if(lighting_expired)
2632         {
2633                 lighting_invalidated_blocks.insert(p, block);
2634         }
2635
2636 #if 0
2637         /*
2638                 Initially update sunlight
2639         */
2640         {
2641                 core::map<v3s16, bool> light_sources;
2642                 bool black_air_left = false;
2643                 bool bottom_invalid =
2644                                 block->propagateSunlight(light_sources, true,
2645                                 &black_air_left);
2646
2647                 // If sunlight didn't reach everywhere and part of block is
2648                 // above ground, lighting has to be properly updated
2649                 //if(black_air_left && some_part_underground)
2650                 if(black_air_left)
2651                 {
2652                         lighting_invalidated_blocks[block->getPos()] = block;
2653                 }
2654
2655                 if(bottom_invalid)
2656                 {
2657                         lighting_invalidated_blocks[block->getPos()] = block;
2658                 }
2659         }
2660 #endif
2661
2662         return block;
2663 }
2664 #endif
2665
2666 s16 ServerMap::findGroundLevel(v2s16 p2d)
2667 {
2668 #if 0
2669         /*
2670                 Uh, just do something random...
2671         */
2672         // Find existing map from top to down
2673         s16 max=63;
2674         s16 min=-64;
2675         v3s16 p(p2d.X, max, p2d.Y);
2676         for(; p.Y>min; p.Y--)
2677         {
2678                 MapNode n = getNodeNoEx(p);
2679                 if(n.d != CONTENT_IGNORE)
2680                         break;
2681         }
2682         if(p.Y == min)
2683                 goto plan_b;
2684         // If this node is not air, go to plan b
2685         if(getNodeNoEx(p).d != CONTENT_AIR)
2686                 goto plan_b;
2687         // Search existing walkable and return it
2688         for(; p.Y>min; p.Y--)
2689         {
2690                 MapNode n = getNodeNoEx(p);
2691                 if(content_walkable(n.d) && n.d != CONTENT_IGNORE)
2692                         return p.Y;
2693         }
2694
2695         // Move to plan b
2696 plan_b:
2697 #endif
2698
2699         /*
2700                 Determine from map generator noise functions
2701         */
2702
2703         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2704         return level;
2705
2706         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2707         //return (s16)level;
2708 }
2709
2710 void ServerMap::createDirs(std::string path)
2711 {
2712         if(fs::CreateAllDirs(path) == false)
2713         {
2714                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2715                                 <<"\""<<path<<"\""<<std::endl;
2716                 throw BaseException("ServerMap failed to create directory");
2717         }
2718 }
2719
2720 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2721 {
2722         char cc[9];
2723         switch(layout)
2724         {
2725                 case 1:
2726                         snprintf(cc, 9, "%.4x%.4x",
2727                                 (unsigned int)pos.X&0xffff,
2728                                 (unsigned int)pos.Y&0xffff);
2729
2730                         return m_savedir + "/sectors/" + cc;
2731                 case 2:
2732                         snprintf(cc, 9, "%.3x/%.3x",
2733                                 (unsigned int)pos.X&0xfff,
2734                                 (unsigned int)pos.Y&0xfff);
2735
2736                         return m_savedir + "/sectors2/" + cc;
2737                 default:
2738                         assert(false);
2739         }
2740 }
2741
2742 v2s16 ServerMap::getSectorPos(std::string dirname)
2743 {
2744         unsigned int x, y;
2745         int r;
2746         size_t spos = dirname.rfind('/') + 1;
2747         assert(spos != std::string::npos);
2748         if(dirname.size() - spos == 8)
2749         {
2750                 // Old layout
2751                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2752         }
2753         else if(dirname.size() - spos == 3)
2754         {
2755                 // New layout
2756                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2757                 // Sign-extend the 12 bit values up to 16 bits...
2758                 if(x&0x800) x|=0xF000;
2759                 if(y&0x800) y|=0xF000;
2760         }
2761         else
2762         {
2763                 assert(false);
2764         }
2765         assert(r == 2);
2766         v2s16 pos((s16)x, (s16)y);
2767         return pos;
2768 }
2769
2770 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2771 {
2772         v2s16 p2d = getSectorPos(sectordir);
2773
2774         if(blockfile.size() != 4){
2775                 throw InvalidFilenameException("Invalid block filename");
2776         }
2777         unsigned int y;
2778         int r = sscanf(blockfile.c_str(), "%4x", &y);
2779         if(r != 1)
2780                 throw InvalidFilenameException("Invalid block filename");
2781         return v3s16(p2d.X, y, p2d.Y);
2782 }
2783
2784 std::string ServerMap::getBlockFilename(v3s16 p)
2785 {
2786         char cc[5];
2787         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2788         return cc;
2789 }
2790
2791 void ServerMap::save(bool only_changed)
2792 {
2793         DSTACK(__FUNCTION_NAME);
2794         if(m_map_saving_enabled == false)
2795         {
2796                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2797                 return;
2798         }
2799
2800         if(only_changed == false)
2801                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2802                                 <<std::endl;
2803
2804         if(only_changed == false || m_map_metadata_changed)
2805         {
2806                 saveMapMeta();
2807         }
2808
2809         u32 sector_meta_count = 0;
2810         u32 block_count = 0;
2811         u32 block_count_all = 0; // Number of blocks in memory
2812
2813         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2814         for(; i.atEnd() == false; i++)
2815         {
2816                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2817                 assert(sector->getId() == MAPSECTOR_SERVER);
2818
2819                 if(sector->differs_from_disk || only_changed == false)
2820                 {
2821                         saveSectorMeta(sector);
2822                         sector_meta_count++;
2823                 }
2824                 core::list<MapBlock*> blocks;
2825                 sector->getBlocks(blocks);
2826                 core::list<MapBlock*>::Iterator j;
2827                 for(j=blocks.begin(); j!=blocks.end(); j++)
2828                 {
2829                         MapBlock *block = *j;
2830
2831                         block_count_all++;
2832
2833                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2834                                         || only_changed == false)
2835                         {
2836                                 saveBlock(block);
2837                                 block_count++;
2838
2839                                 /*dstream<<"ServerMap: Written block ("
2840                                                 <<block->getPos().X<<","
2841                                                 <<block->getPos().Y<<","
2842                                                 <<block->getPos().Z<<")"
2843                                                 <<std::endl;*/
2844                         }
2845                 }
2846         }
2847
2848         /*
2849                 Only print if something happened or saved whole map
2850         */
2851         if(only_changed == false || sector_meta_count != 0
2852                         || block_count != 0)
2853         {
2854                 dstream<<DTIME<<"ServerMap: Written: "
2855                                 <<sector_meta_count<<" sector metadata files, "
2856                                 <<block_count<<" block files"
2857                                 <<", "<<block_count_all<<" blocks in memory."
2858                                 <<std::endl;
2859         }
2860 }
2861
2862 void ServerMap::saveMapMeta()
2863 {
2864         DSTACK(__FUNCTION_NAME);
2865
2866         dstream<<"INFO: ServerMap::saveMapMeta(): "
2867                         <<"seed="<<m_seed
2868                         <<std::endl;
2869
2870         createDirs(m_savedir);
2871
2872         std::string fullpath = m_savedir + "/map_meta.txt";
2873         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2874         if(os.good() == false)
2875         {
2876                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2877                                 <<"could not open"<<fullpath<<std::endl;
2878                 throw FileNotGoodException("Cannot open chunk metadata");
2879         }
2880
2881         Settings params;
2882         params.setU64("seed", m_seed);
2883
2884         params.writeLines(os);
2885
2886         os<<"[end_of_params]\n";
2887
2888         m_map_metadata_changed = false;
2889 }
2890
2891 void ServerMap::loadMapMeta()
2892 {
2893         DSTACK(__FUNCTION_NAME);
2894
2895         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2896                         <<std::endl;
2897
2898         std::string fullpath = m_savedir + "/map_meta.txt";
2899         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2900         if(is.good() == false)
2901         {
2902                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2903                                 <<"could not open"<<fullpath<<std::endl;
2904                 throw FileNotGoodException("Cannot open map metadata");
2905         }
2906
2907         Settings params;
2908
2909         for(;;)
2910         {
2911                 if(is.eof())
2912                         throw SerializationError
2913                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2914                 std::string line;
2915                 std::getline(is, line);
2916                 std::string trimmedline = trim(line);
2917                 if(trimmedline == "[end_of_params]")
2918                         break;
2919                 params.parseConfigLine(line);
2920         }
2921
2922         m_seed = params.getU64("seed");
2923
2924         dstream<<"INFO: ServerMap::loadMapMeta(): "
2925                         <<"seed="<<m_seed
2926                         <<std::endl;
2927 }
2928
2929 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2930 {
2931         DSTACK(__FUNCTION_NAME);
2932         // Format used for writing
2933         u8 version = SER_FMT_VER_HIGHEST;
2934         // Get destination
2935         v2s16 pos = sector->getPos();
2936         std::string dir = getSectorDir(pos);
2937         createDirs(dir);
2938
2939         std::string fullpath = dir + "/meta";
2940         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2941         if(o.good() == false)
2942                 throw FileNotGoodException("Cannot open sector metafile");
2943
2944         sector->serialize(o, version);
2945
2946         sector->differs_from_disk = false;
2947 }
2948
2949 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
2950 {
2951         DSTACK(__FUNCTION_NAME);
2952         // Get destination
2953         v2s16 p2d = getSectorPos(sectordir);
2954
2955         ServerMapSector *sector = NULL;
2956
2957         std::string fullpath = sectordir + "/meta";
2958         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2959         if(is.good() == false)
2960         {
2961                 // If the directory exists anyway, it probably is in some old
2962                 // format. Just go ahead and create the sector.
2963                 if(fs::PathExists(sectordir))
2964                 {
2965                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
2966                                         <<fullpath<<" doesn't exist but directory does."
2967                                         <<" Continuing with a sector with no metadata."
2968                                         <<std::endl;*/
2969                         sector = new ServerMapSector(this, p2d);
2970                         m_sectors.insert(p2d, sector);
2971                 }
2972                 else
2973                 {
2974                         throw FileNotGoodException("Cannot open sector metafile");
2975                 }
2976         }
2977         else
2978         {
2979                 sector = ServerMapSector::deSerialize
2980                                 (is, this, p2d, m_sectors);
2981                 if(save_after_load)
2982                         saveSectorMeta(sector);
2983         }
2984
2985         sector->differs_from_disk = false;
2986
2987         return sector;
2988 }
2989
2990 bool ServerMap::loadSectorMeta(v2s16 p2d)
2991 {
2992         DSTACK(__FUNCTION_NAME);
2993
2994         MapSector *sector = NULL;
2995
2996         // The directory layout we're going to load from.
2997         //  1 - original sectors/xxxxzzzz/
2998         //  2 - new sectors2/xxx/zzz/
2999         //  If we load from anything but the latest structure, we will
3000         //  immediately save to the new one, and remove the old.
3001         int loadlayout = 1;
3002         std::string sectordir1 = getSectorDir(p2d, 1);
3003         std::string sectordir;
3004         if(fs::PathExists(sectordir1))
3005         {
3006                 sectordir = sectordir1;
3007         }
3008         else
3009         {
3010                 loadlayout = 2;
3011                 sectordir = getSectorDir(p2d, 2);
3012         }
3013
3014         try{
3015                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3016         }
3017         catch(InvalidFilenameException &e)
3018         {
3019                 return false;
3020         }
3021         catch(FileNotGoodException &e)
3022         {
3023                 return false;
3024         }
3025         catch(std::exception &e)
3026         {
3027                 return false;
3028         }
3029
3030         return true;
3031 }
3032
3033 #if 0
3034 bool ServerMap::loadSectorFull(v2s16 p2d)
3035 {
3036         DSTACK(__FUNCTION_NAME);
3037
3038         MapSector *sector = NULL;
3039
3040         // The directory layout we're going to load from.
3041         //  1 - original sectors/xxxxzzzz/
3042         //  2 - new sectors2/xxx/zzz/
3043         //  If we load from anything but the latest structure, we will
3044         //  immediately save to the new one, and remove the old.
3045         int loadlayout = 1;
3046         std::string sectordir1 = getSectorDir(p2d, 1);
3047         std::string sectordir;
3048         if(fs::PathExists(sectordir1))
3049         {
3050                 sectordir = sectordir1;
3051         }
3052         else
3053         {
3054                 loadlayout = 2;
3055                 sectordir = getSectorDir(p2d, 2);
3056         }
3057
3058         try{
3059                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3060         }
3061         catch(InvalidFilenameException &e)
3062         {
3063                 return false;
3064         }
3065         catch(FileNotGoodException &e)
3066         {
3067                 return false;
3068         }
3069         catch(std::exception &e)
3070         {
3071                 return false;
3072         }
3073
3074         /*
3075                 Load blocks
3076         */
3077         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3078                         (sectordir);
3079         std::vector<fs::DirListNode>::iterator i2;
3080         for(i2=list2.begin(); i2!=list2.end(); i2++)
3081         {
3082                 // We want files
3083                 if(i2->dir)
3084                         continue;
3085                 try{
3086                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3087                 }
3088                 catch(InvalidFilenameException &e)
3089                 {
3090                         // This catches unknown crap in directory
3091                 }
3092         }
3093
3094         if(loadlayout != 2)
3095         {
3096                 dstream<<"Sector converted to new layout - deleting "<<
3097                         sectordir1<<std::endl;
3098                 fs::RecursiveDelete(sectordir1);
3099         }
3100
3101         return true;
3102 }
3103 #endif
3104
3105 void ServerMap::saveBlock(MapBlock *block)
3106 {
3107         DSTACK(__FUNCTION_NAME);
3108         /*
3109                 Dummy blocks are not written
3110         */
3111         if(block->isDummy())
3112         {
3113                 /*v3s16 p = block->getPos();
3114                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3115                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3116                 return;
3117         }
3118
3119         // Format used for writing
3120         u8 version = SER_FMT_VER_HIGHEST;
3121         // Get destination
3122         v3s16 p3d = block->getPos();
3123
3124         v2s16 p2d(p3d.X, p3d.Z);
3125         std::string sectordir = getSectorDir(p2d);
3126
3127         createDirs(sectordir);
3128
3129         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3130         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3131         if(o.good() == false)
3132                 throw FileNotGoodException("Cannot open block data");
3133
3134         /*
3135                 [0] u8 serialization version
3136                 [1] data
3137         */
3138         o.write((char*)&version, 1);
3139
3140         // Write basic data
3141         block->serialize(o, version);
3142
3143         // Write extra data stored on disk
3144         block->serializeDiskExtra(o, version);
3145
3146         // We just wrote it to the disk so clear modified flag
3147         block->resetModified();
3148 }
3149
3150 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3151 {
3152         DSTACK(__FUNCTION_NAME);
3153
3154         std::string fullpath = sectordir+"/"+blockfile;
3155         try{
3156
3157                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3158                 if(is.good() == false)
3159                         throw FileNotGoodException("Cannot open block file");
3160
3161                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3162                 v2s16 p2d(p3d.X, p3d.Z);
3163
3164                 assert(sector->getPos() == p2d);
3165
3166                 u8 version = SER_FMT_VER_INVALID;
3167                 is.read((char*)&version, 1);
3168
3169                 if(is.fail())
3170                         throw SerializationError("ServerMap::loadBlock(): Failed"
3171                                         " to read MapBlock version");
3172
3173                 /*u32 block_size = MapBlock::serializedLength(version);
3174                 SharedBuffer<u8> data(block_size);
3175                 is.read((char*)*data, block_size);*/
3176
3177                 // This will always return a sector because we're the server
3178                 //MapSector *sector = emergeSector(p2d);
3179
3180                 MapBlock *block = NULL;
3181                 bool created_new = false;
3182                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3183                 if(block == NULL)
3184                 {
3185                         block = sector->createBlankBlockNoInsert(p3d.Y);
3186                         created_new = true;
3187                 }
3188
3189                 // Read basic data
3190                 block->deSerialize(is, version);
3191
3192                 // Read extra data stored on disk
3193                 block->deSerializeDiskExtra(is, version);
3194
3195                 // If it's a new block, insert it to the map
3196                 if(created_new)
3197                         sector->insertBlock(block);
3198
3199                 /*
3200                         Save blocks loaded in old format in new format
3201                 */
3202
3203                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3204                 {
3205                         saveBlock(block);
3206                 }
3207
3208                 // We just loaded it from the disk, so it's up-to-date.
3209                 block->resetModified();
3210
3211         }
3212         catch(SerializationError &e)
3213         {
3214                 dstream<<"WARNING: Invalid block data on disk "
3215                                 <<"fullpath="<<fullpath
3216                                 <<" (SerializationError). "
3217                                 <<"what()="<<e.what()
3218                                 <<std::endl;
3219                                 //" Ignoring. A new one will be generated.
3220                 assert(0);
3221
3222                 // TODO: Backup file; name is in fullpath.
3223         }
3224 }
3225
3226 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3227 {
3228         DSTACK(__FUNCTION_NAME);
3229
3230         v2s16 p2d(blockpos.X, blockpos.Z);
3231
3232         // The directory layout we're going to load from.
3233         //  1 - original sectors/xxxxzzzz/
3234         //  2 - new sectors2/xxx/zzz/
3235         //  If we load from anything but the latest structure, we will
3236         //  immediately save to the new one, and remove the old.
3237         int loadlayout = 1;
3238         std::string sectordir1 = getSectorDir(p2d, 1);
3239         std::string sectordir;
3240         if(fs::PathExists(sectordir1))
3241         {
3242                 sectordir = sectordir1;
3243         }
3244         else
3245         {
3246                 loadlayout = 2;
3247                 sectordir = getSectorDir(p2d, 2);
3248         }
3249
3250         /*
3251                 Make sure sector is loaded
3252         */
3253         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3254         if(sector == NULL)
3255         {
3256                 try{
3257                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3258                 }
3259                 catch(InvalidFilenameException &e)
3260                 {
3261                         return false;
3262                 }
3263                 catch(FileNotGoodException &e)
3264                 {
3265                         return false;
3266                 }
3267                 catch(std::exception &e)
3268                 {
3269                         return false;
3270                 }
3271         }
3272
3273         /*
3274                 Make sure file exists
3275         */
3276
3277         std::string blockfilename = getBlockFilename(blockpos);
3278         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3279                 return NULL;
3280
3281         /*
3282                 Load block
3283         */
3284         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3285         return getBlockNoCreateNoEx(blockpos);
3286 }
3287
3288 void ServerMap::PrintInfo(std::ostream &out)
3289 {
3290         out<<"ServerMap: ";
3291 }
3292
3293 #ifndef SERVER
3294
3295 /*
3296         ClientMap
3297 */
3298
3299 ClientMap::ClientMap(
3300                 Client *client,
3301                 MapDrawControl &control,
3302                 scene::ISceneNode* parent,
3303                 scene::ISceneManager* mgr,
3304                 s32 id
3305 ):
3306         Map(dout_client),
3307         scene::ISceneNode(parent, mgr, id),
3308         m_client(client),
3309         m_control(control),
3310         m_camera_position(0,0,0),
3311         m_camera_direction(0,0,1)
3312 {
3313         m_camera_mutex.Init();
3314         assert(m_camera_mutex.IsInitialized());
3315
3316         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3317                         BS*1000000,BS*1000000,BS*1000000);
3318 }
3319
3320 ClientMap::~ClientMap()
3321 {
3322         /*JMutexAutoLock lock(mesh_mutex);
3323
3324         if(mesh != NULL)
3325         {
3326                 mesh->drop();
3327                 mesh = NULL;
3328         }*/
3329 }
3330
3331 MapSector * ClientMap::emergeSector(v2s16 p2d)
3332 {
3333         DSTACK(__FUNCTION_NAME);
3334         // Check that it doesn't exist already
3335         try{
3336                 return getSectorNoGenerate(p2d);
3337         }
3338         catch(InvalidPositionException &e)
3339         {
3340         }
3341
3342         // Create a sector
3343         ClientMapSector *sector = new ClientMapSector(this, p2d);
3344
3345         {
3346                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3347                 m_sectors.insert(p2d, sector);
3348         }
3349
3350         return sector;
3351 }
3352
3353 #if 0
3354 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3355 {
3356         DSTACK(__FUNCTION_NAME);
3357         ClientMapSector *sector = NULL;
3358
3359         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3360
3361         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3362
3363         if(n != NULL)
3364         {
3365                 sector = (ClientMapSector*)n->getValue();
3366                 assert(sector->getId() == MAPSECTOR_CLIENT);
3367         }
3368         else
3369         {
3370                 sector = new ClientMapSector(this, p2d);
3371                 {
3372                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3373                         m_sectors.insert(p2d, sector);
3374                 }
3375         }
3376
3377         sector->deSerialize(is);
3378 }
3379 #endif
3380
3381 void ClientMap::OnRegisterSceneNode()
3382 {
3383         if(IsVisible)
3384         {
3385                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3386                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3387         }
3388
3389         ISceneNode::OnRegisterSceneNode();
3390 }
3391
3392 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3393 {
3394         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3395         DSTACK(__FUNCTION_NAME);
3396
3397         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3398
3399         /*
3400                 This is called two times per frame, reset on the non-transparent one
3401         */
3402         if(pass == scene::ESNRP_SOLID)
3403         {
3404                 m_last_drawn_sectors.clear();
3405         }
3406
3407         /*
3408                 Get time for measuring timeout.
3409
3410                 Measuring time is very useful for long delays when the
3411                 machine is swapping a lot.
3412         */
3413         int time1 = time(0);
3414
3415         //u32 daynight_ratio = m_client->getDayNightRatio();
3416
3417         m_camera_mutex.Lock();
3418         v3f camera_position = m_camera_position;
3419         v3f camera_direction = m_camera_direction;
3420         m_camera_mutex.Unlock();
3421
3422         /*
3423                 Get all blocks and draw all visible ones
3424         */
3425
3426         v3s16 cam_pos_nodes(
3427                         camera_position.X / BS,
3428                         camera_position.Y / BS,
3429                         camera_position.Z / BS);
3430
3431         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3432
3433         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3434         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3435
3436         // Take a fair amount as we will be dropping more out later
3437         v3s16 p_blocks_min(
3438                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3439                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3440                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3441         v3s16 p_blocks_max(
3442                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3443                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3444                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3445
3446         u32 vertex_count = 0;
3447
3448         // For limiting number of mesh updates per frame
3449         u32 mesh_update_count = 0;
3450
3451         u32 blocks_would_have_drawn = 0;
3452         u32 blocks_drawn = 0;
3453
3454         int timecheck_counter = 0;
3455         core::map<v2s16, MapSector*>::Iterator si;
3456         si = m_sectors.getIterator();
3457         for(; si.atEnd() == false; si++)
3458         {
3459                 {
3460                         timecheck_counter++;
3461                         if(timecheck_counter > 50)
3462                         {
3463                                 timecheck_counter = 0;
3464                                 int time2 = time(0);
3465                                 if(time2 > time1 + 4)
3466                                 {
3467                                         dstream<<"ClientMap::renderMap(): "
3468                                                 "Rendering takes ages, returning."
3469                                                 <<std::endl;
3470                                         return;
3471                                 }
3472                         }
3473                 }
3474
3475                 MapSector *sector = si.getNode()->getValue();
3476                 v2s16 sp = sector->getPos();
3477
3478                 if(m_control.range_all == false)
3479                 {
3480                         if(sp.X < p_blocks_min.X
3481                         || sp.X > p_blocks_max.X
3482                         || sp.Y < p_blocks_min.Z
3483                         || sp.Y > p_blocks_max.Z)
3484                                 continue;
3485                 }
3486
3487                 core::list< MapBlock * > sectorblocks;
3488                 sector->getBlocks(sectorblocks);
3489
3490                 /*
3491                         Draw blocks
3492                 */
3493
3494                 u32 sector_blocks_drawn = 0;
3495
3496                 core::list< MapBlock * >::Iterator i;
3497                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3498                 {
3499                         MapBlock *block = *i;
3500
3501                         /*
3502                                 Compare block position to camera position, skip
3503                                 if not seen on display
3504                         */
3505
3506                         float range = 100000 * BS;
3507                         if(m_control.range_all == false)
3508                                 range = m_control.wanted_range * BS;
3509
3510                         float d = 0.0;
3511                         if(isBlockInSight(block->getPos(), camera_position,
3512                                         camera_direction, range, &d) == false)
3513                         {
3514                                 continue;
3515                         }
3516
3517                         // Okay, this block will be drawn. Reset usage timer.
3518                         block->resetUsageTimer();
3519
3520                         // This is ugly (spherical distance limit?)
3521                         /*if(m_control.range_all == false &&
3522                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3523                                 continue;*/
3524
3525 #if 1
3526                         /*
3527                                 Update expired mesh (used for day/night change)
3528
3529                                 It doesn't work exactly like it should now with the
3530                                 tasked mesh update but whatever.
3531                         */
3532
3533                         bool mesh_expired = false;
3534
3535                         {
3536                                 JMutexAutoLock lock(block->mesh_mutex);
3537
3538                                 mesh_expired = block->getMeshExpired();
3539
3540                                 // Mesh has not been expired and there is no mesh:
3541                                 // block has no content
3542                                 if(block->mesh == NULL && mesh_expired == false)
3543                                         continue;
3544                         }
3545
3546                         f32 faraway = BS*50;
3547                         //f32 faraway = m_control.wanted_range * BS;
3548
3549                         /*
3550                                 This has to be done with the mesh_mutex unlocked
3551                         */
3552                         // Pretty random but this should work somewhat nicely
3553                         if(mesh_expired && (
3554                                         (mesh_update_count < 3
3555                                                 && (d < faraway || mesh_update_count < 2)
3556                                         )
3557                                         ||
3558                                         (m_control.range_all && mesh_update_count < 20)
3559                                 )
3560                         )
3561                         /*if(mesh_expired && mesh_update_count < 6
3562                                         && (d < faraway || mesh_update_count < 3))*/
3563                         {
3564                                 mesh_update_count++;
3565
3566                                 // Mesh has been expired: generate new mesh
3567                                 //block->updateMesh(daynight_ratio);
3568                                 m_client->addUpdateMeshTask(block->getPos());
3569
3570                                 mesh_expired = false;
3571                         }
3572
3573 #endif
3574                         /*
3575                                 Draw the faces of the block
3576                         */
3577                         {
3578                                 JMutexAutoLock lock(block->mesh_mutex);
3579
3580                                 scene::SMesh *mesh = block->mesh;
3581
3582                                 if(mesh == NULL)
3583                                         continue;
3584
3585                                 blocks_would_have_drawn++;
3586                                 if(blocks_drawn >= m_control.wanted_max_blocks
3587                                                 && m_control.range_all == false
3588                                                 && d > m_control.wanted_min_range * BS)
3589                                         continue;
3590
3591                                 blocks_drawn++;
3592                                 sector_blocks_drawn++;
3593
3594                                 u32 c = mesh->getMeshBufferCount();
3595
3596                                 for(u32 i=0; i<c; i++)
3597                                 {
3598                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3599                                         const video::SMaterial& material = buf->getMaterial();
3600                                         video::IMaterialRenderer* rnd =
3601                                                         driver->getMaterialRenderer(material.MaterialType);
3602                                         bool transparent = (rnd && rnd->isTransparent());
3603                                         // Render transparent on transparent pass and likewise.
3604                                         if(transparent == is_transparent_pass)
3605                                         {
3606                                                 /*
3607                                                         This *shouldn't* hurt too much because Irrlicht
3608                                                         doesn't change opengl textures if the old
3609                                                         material is set again.
3610                                                 */
3611                                                 driver->setMaterial(buf->getMaterial());
3612                                                 driver->drawMeshBuffer(buf);
3613                                                 vertex_count += buf->getVertexCount();
3614                                         }
3615                                 }
3616                         }
3617                 } // foreach sectorblocks
3618
3619                 if(sector_blocks_drawn != 0)
3620                 {
3621                         m_last_drawn_sectors[sp] = true;
3622                 }
3623         }
3624
3625         m_control.blocks_drawn = blocks_drawn;
3626         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3627
3628         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3629                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3630 }
3631
3632 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3633                 core::map<v3s16, MapBlock*> *affected_blocks)
3634 {
3635         bool changed = false;
3636         /*
3637                 Add it to all blocks touching it
3638         */
3639         v3s16 dirs[7] = {
3640                 v3s16(0,0,0), // this
3641                 v3s16(0,0,1), // back
3642                 v3s16(0,1,0), // top
3643                 v3s16(1,0,0), // right
3644                 v3s16(0,0,-1), // front
3645                 v3s16(0,-1,0), // bottom
3646                 v3s16(-1,0,0), // left
3647         };
3648         for(u16 i=0; i<7; i++)
3649         {
3650                 v3s16 p2 = p + dirs[i];
3651                 // Block position of neighbor (or requested) node
3652                 v3s16 blockpos = getNodeBlockPos(p2);
3653                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3654                 if(blockref == NULL)
3655                         continue;
3656                 // Relative position of requested node
3657                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3658                 if(blockref->setTempMod(relpos, mod))
3659                 {
3660                         changed = true;
3661                 }
3662         }
3663         if(changed && affected_blocks!=NULL)
3664         {
3665                 for(u16 i=0; i<7; i++)
3666                 {
3667                         v3s16 p2 = p + dirs[i];
3668                         // Block position of neighbor (or requested) node
3669                         v3s16 blockpos = getNodeBlockPos(p2);
3670                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3671                         if(blockref == NULL)
3672                                 continue;
3673                         affected_blocks->insert(blockpos, blockref);
3674                 }
3675         }
3676         return changed;
3677 }
3678
3679 bool ClientMap::clearTempMod(v3s16 p,
3680                 core::map<v3s16, MapBlock*> *affected_blocks)
3681 {
3682         bool changed = false;
3683         v3s16 dirs[7] = {
3684                 v3s16(0,0,0), // this
3685                 v3s16(0,0,1), // back
3686                 v3s16(0,1,0), // top
3687                 v3s16(1,0,0), // right
3688                 v3s16(0,0,-1), // front
3689                 v3s16(0,-1,0), // bottom
3690                 v3s16(-1,0,0), // left
3691         };
3692         for(u16 i=0; i<7; i++)
3693         {
3694                 v3s16 p2 = p + dirs[i];
3695                 // Block position of neighbor (or requested) node
3696                 v3s16 blockpos = getNodeBlockPos(p2);
3697                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3698                 if(blockref == NULL)
3699                         continue;
3700                 // Relative position of requested node
3701                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3702                 if(blockref->clearTempMod(relpos))
3703                 {
3704                         changed = true;
3705                 }
3706         }
3707         if(changed && affected_blocks!=NULL)
3708         {
3709                 for(u16 i=0; i<7; i++)
3710                 {
3711                         v3s16 p2 = p + dirs[i];
3712                         // Block position of neighbor (or requested) node
3713                         v3s16 blockpos = getNodeBlockPos(p2);
3714                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3715                         if(blockref == NULL)
3716                                 continue;
3717                         affected_blocks->insert(blockpos, blockref);
3718                 }
3719         }
3720         return changed;
3721 }
3722
3723 void ClientMap::expireMeshes(bool only_daynight_diffed)
3724 {
3725         TimeTaker timer("expireMeshes()");
3726
3727         core::map<v2s16, MapSector*>::Iterator si;
3728         si = m_sectors.getIterator();
3729         for(; si.atEnd() == false; si++)
3730         {
3731                 MapSector *sector = si.getNode()->getValue();
3732
3733                 core::list< MapBlock * > sectorblocks;
3734                 sector->getBlocks(sectorblocks);
3735
3736                 core::list< MapBlock * >::Iterator i;
3737                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3738                 {
3739                         MapBlock *block = *i;
3740
3741                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3742                         {
3743                                 continue;
3744                         }
3745
3746                         {
3747                                 JMutexAutoLock lock(block->mesh_mutex);
3748                                 if(block->mesh != NULL)
3749                                 {
3750                                         /*block->mesh->drop();
3751                                         block->mesh = NULL;*/
3752                                         block->setMeshExpired(true);
3753                                 }
3754                         }
3755                 }
3756         }
3757 }
3758
3759 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3760 {
3761         assert(mapType() == MAPTYPE_CLIENT);
3762
3763         try{
3764                 v3s16 p = blockpos + v3s16(0,0,0);
3765                 MapBlock *b = getBlockNoCreate(p);
3766                 b->updateMesh(daynight_ratio);
3767                 //b->setMeshExpired(true);
3768         }
3769         catch(InvalidPositionException &e){}
3770         // Leading edge
3771         try{
3772                 v3s16 p = blockpos + v3s16(-1,0,0);
3773                 MapBlock *b = getBlockNoCreate(p);
3774                 b->updateMesh(daynight_ratio);
3775                 //b->setMeshExpired(true);
3776         }
3777         catch(InvalidPositionException &e){}
3778         try{
3779                 v3s16 p = blockpos + v3s16(0,-1,0);
3780                 MapBlock *b = getBlockNoCreate(p);
3781                 b->updateMesh(daynight_ratio);
3782                 //b->setMeshExpired(true);
3783         }
3784         catch(InvalidPositionException &e){}
3785         try{
3786                 v3s16 p = blockpos + v3s16(0,0,-1);
3787                 MapBlock *b = getBlockNoCreate(p);
3788                 b->updateMesh(daynight_ratio);
3789                 //b->setMeshExpired(true);
3790         }
3791         catch(InvalidPositionException &e){}
3792 }
3793
3794 #if 0
3795 /*
3796         Update mesh of block in which the node is, and if the node is at the
3797         leading edge, update the appropriate leading blocks too.
3798 */
3799 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3800 {
3801         v3s16 dirs[4] = {
3802                 v3s16(0,0,0),
3803                 v3s16(-1,0,0),
3804                 v3s16(0,-1,0),
3805                 v3s16(0,0,-1),
3806         };
3807         v3s16 blockposes[4];
3808         for(u32 i=0; i<4; i++)
3809         {
3810                 v3s16 np = nodepos + dirs[i];
3811                 blockposes[i] = getNodeBlockPos(np);
3812                 // Don't update mesh of block if it has been done already
3813                 bool already_updated = false;
3814                 for(u32 j=0; j<i; j++)
3815                 {
3816                         if(blockposes[j] == blockposes[i])
3817                         {
3818                                 already_updated = true;
3819                                 break;
3820                         }
3821                 }
3822                 if(already_updated)
3823                         continue;
3824                 // Update mesh
3825                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3826                 b->updateMesh(daynight_ratio);
3827         }
3828 }
3829 #endif
3830
3831 void ClientMap::PrintInfo(std::ostream &out)
3832 {
3833         out<<"ClientMap: ";
3834 }
3835
3836 #endif // !SERVER
3837
3838 /*
3839         MapVoxelManipulator
3840 */
3841
3842 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3843 {
3844         m_map = map;
3845 }
3846
3847 MapVoxelManipulator::~MapVoxelManipulator()
3848 {
3849         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3850                         <<std::endl;*/
3851 }
3852
3853 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3854 {
3855         TimeTaker timer1("emerge", &emerge_time);
3856
3857         // Units of these are MapBlocks
3858         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3859         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3860
3861         VoxelArea block_area_nodes
3862                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3863
3864         addArea(block_area_nodes);
3865
3866         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3867         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3868         for(s32 x=p_min.X; x<=p_max.X; x++)
3869         {
3870                 v3s16 p(x,y,z);
3871                 core::map<v3s16, bool>::Node *n;
3872                 n = m_loaded_blocks.find(p);
3873                 if(n != NULL)
3874                         continue;
3875
3876                 bool block_data_inexistent = false;
3877                 try
3878                 {
3879                         TimeTaker timer1("emerge load", &emerge_load_time);
3880
3881                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3882                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3883                                         <<" wanted area: ";
3884                         a.print(dstream);
3885                         dstream<<std::endl;*/
3886
3887                         MapBlock *block = m_map->getBlockNoCreate(p);
3888                         if(block->isDummy())
3889                                 block_data_inexistent = true;
3890                         else
3891                                 block->copyTo(*this);
3892                 }
3893                 catch(InvalidPositionException &e)
3894                 {
3895                         block_data_inexistent = true;
3896                 }
3897
3898                 if(block_data_inexistent)
3899                 {
3900                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3901                         // Fill with VOXELFLAG_INEXISTENT
3902                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3903                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3904                         {
3905                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3906                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3907                         }
3908                 }
3909
3910                 m_loaded_blocks.insert(p, !block_data_inexistent);
3911         }
3912
3913         //dstream<<"emerge done"<<std::endl;
3914 }
3915
3916 /*
3917         SUGG: Add an option to only update eg. water and air nodes.
3918               This will make it interfere less with important stuff if
3919                   run on background.
3920 */
3921 void MapVoxelManipulator::blitBack
3922                 (core::map<v3s16, MapBlock*> & modified_blocks)
3923 {
3924         if(m_area.getExtent() == v3s16(0,0,0))
3925                 return;
3926
3927         //TimeTaker timer1("blitBack");
3928
3929         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3930                         <<m_loaded_blocks.size()<<std::endl;*/
3931
3932         /*
3933                 Initialize block cache
3934         */
3935         v3s16 blockpos_last;
3936         MapBlock *block = NULL;
3937         bool block_checked_in_modified = false;
3938
3939         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3940         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3941         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3942         {
3943                 v3s16 p(x,y,z);
3944
3945                 u8 f = m_flags[m_area.index(p)];
3946                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
3947                         continue;
3948
3949                 MapNode &n = m_data[m_area.index(p)];
3950
3951                 v3s16 blockpos = getNodeBlockPos(p);
3952
3953                 try
3954                 {
3955                         // Get block
3956                         if(block == NULL || blockpos != blockpos_last){
3957                                 block = m_map->getBlockNoCreate(blockpos);
3958                                 blockpos_last = blockpos;
3959                                 block_checked_in_modified = false;
3960                         }
3961
3962                         // Calculate relative position in block
3963                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
3964
3965                         // Don't continue if nothing has changed here
3966                         if(block->getNode(relpos) == n)
3967                                 continue;
3968
3969                         //m_map->setNode(m_area.MinEdge + p, n);
3970                         block->setNode(relpos, n);
3971
3972                         /*
3973                                 Make sure block is in modified_blocks
3974                         */
3975                         if(block_checked_in_modified == false)
3976                         {
3977                                 modified_blocks[blockpos] = block;
3978                                 block_checked_in_modified = true;
3979                         }
3980                 }
3981                 catch(InvalidPositionException &e)
3982                 {
3983                 }
3984         }
3985 }
3986
3987 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
3988                 MapVoxelManipulator(map),
3989                 m_create_area(false)
3990 {
3991 }
3992
3993 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
3994 {
3995 }
3996
3997 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3998 {
3999         // Just create the area so that it can be pointed to
4000         VoxelManipulator::emerge(a, caller_id);
4001 }
4002
4003 void ManualMapVoxelManipulator::initialEmerge(
4004                 v3s16 blockpos_min, v3s16 blockpos_max)
4005 {
4006         TimeTaker timer1("initialEmerge", &emerge_time);
4007
4008         // Units of these are MapBlocks
4009         v3s16 p_min = blockpos_min;
4010         v3s16 p_max = blockpos_max;
4011
4012         VoxelArea block_area_nodes
4013                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4014
4015         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
4016         if(size_MB >= 1)
4017         {
4018                 dstream<<"initialEmerge: area: ";
4019                 block_area_nodes.print(dstream);
4020                 dstream<<" ("<<size_MB<<"MB)";
4021                 dstream<<std::endl;
4022         }
4023
4024         addArea(block_area_nodes);
4025
4026         for(s32 z=p_min.Z; z<=p_max.Z; z++)
4027         for(s32 y=p_min.Y; y<=p_max.Y; y++)
4028         for(s32 x=p_min.X; x<=p_max.X; x++)
4029         {
4030                 v3s16 p(x,y,z);
4031                 core::map<v3s16, bool>::Node *n;
4032                 n = m_loaded_blocks.find(p);
4033                 if(n != NULL)
4034                         continue;
4035
4036                 bool block_data_inexistent = false;
4037                 try
4038                 {
4039                         TimeTaker timer1("emerge load", &emerge_load_time);
4040
4041                         MapBlock *block = m_map->getBlockNoCreate(p);
4042                         if(block->isDummy())
4043                                 block_data_inexistent = true;
4044                         else
4045                                 block->copyTo(*this);
4046                 }
4047                 catch(InvalidPositionException &e)
4048                 {
4049                         block_data_inexistent = true;
4050                 }
4051
4052                 if(block_data_inexistent)
4053                 {
4054                         /*
4055                                 Mark area inexistent
4056                         */
4057                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4058                         // Fill with VOXELFLAG_INEXISTENT
4059                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4060                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4061                         {
4062                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4063                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4064                         }
4065                 }
4066
4067                 m_loaded_blocks.insert(p, !block_data_inexistent);
4068         }
4069 }
4070
4071 void ManualMapVoxelManipulator::blitBackAll(
4072                 core::map<v3s16, MapBlock*> * modified_blocks)
4073 {
4074         if(m_area.getExtent() == v3s16(0,0,0))
4075                 return;
4076
4077         /*
4078                 Copy data of all blocks
4079         */
4080         for(core::map<v3s16, bool>::Iterator
4081                         i = m_loaded_blocks.getIterator();
4082                         i.atEnd() == false; i++)
4083         {
4084                 bool existed = i.getNode()->getValue();
4085                 if(existed == false)
4086                         continue;
4087                 v3s16 p = i.getNode()->getKey();
4088                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4089                 if(block == NULL)
4090                 {
4091                         dstream<<"WARNING: "<<__FUNCTION_NAME
4092                                         <<": got NULL block "
4093                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4094                                         <<std::endl;
4095                         continue;
4096                 }
4097
4098                 block->copyFrom(*this);
4099
4100                 if(modified_blocks)
4101                         modified_blocks->insert(p, block);
4102         }
4103 }
4104
4105 //END