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 enum NeighborType {
1544         NEIGHBOR_UPPER,
1545         NEIGHBOR_SAME_LEVEL,
1546         NEIGHBOR_LOWER
1547 };
1548 struct NodeNeighbor {
1549         MapNode n;
1550         NeighborType t;
1551         v3s16 p;
1552 };
1553
1554 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
1555 {
1556         DSTACK(__FUNCTION_NAME);
1557         //TimeTaker timer("transformLiquids()");
1558
1559         u32 loopcount = 0;
1560         u32 initial_size = m_transforming_liquid.size();
1561
1562         /*if(initial_size != 0)
1563                 dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
1564
1565         while(m_transforming_liquid.size() != 0)
1566         {
1567                 /*
1568                         Get a queued transforming liquid node
1569                 */
1570                 v3s16 p0 = m_transforming_liquid.pop_front();
1571
1572                 MapNode n0 = getNodeNoEx(p0);
1573
1574                 /*
1575                         Collect information about current node
1576                  */
1577                 s8 liquid_level = -1;
1578                 u8 liquid_kind;
1579                 LiquidType liquid_type = content_features(n0.d).liquid_type;
1580                 switch (liquid_type) {
1581                         case LIQUID_SOURCE:
1582                                 liquid_level = 8;
1583                                 liquid_kind = content_features(n0.d).liquid_alternative_flowing;
1584                                 break;
1585                         case LIQUID_FLOWING:
1586                                 liquid_level = (n0.param2 & LIQUID_LEVEL_MASK);
1587                                 liquid_kind = n0.d;
1588                                 break;
1589                         case LIQUID_NONE:
1590                                 // if this is an air node, it *could* be transformed into a liquid. otherwise,
1591                                 // continue with the next node.
1592                                 if (n0.d != CONTENT_AIR)
1593                                         continue;
1594                                 liquid_kind = CONTENT_AIR;
1595                                 break;
1596                 }
1597
1598                 /*
1599                         Collect information about the environment
1600                  */
1601                 v3s16 dirs[6] = {
1602                         v3s16( 0, 1, 0), // top
1603                         v3s16( 0,-1, 0), // bottom
1604                         v3s16( 1, 0, 0), // right
1605                         v3s16(-1, 0, 0), // left
1606                         v3s16( 0, 0, 1), // back
1607                         v3s16( 0, 0,-1), // front
1608                 };
1609                 NodeNeighbor sources[6]; // surrounding sources
1610                 int num_sources = 0;
1611                 NodeNeighbor flows[6]; // surrounding flowing liquid nodes
1612                 int num_flows = 0;
1613                 NodeNeighbor airs[6]; // surrounding air
1614                 int num_airs = 0;
1615                 NodeNeighbor neutrals[6]; // nodes that are solid or another kind of liquid
1616                 int num_neutrals = 0;
1617                 bool flowing_down = false;
1618                 for (u16 i = 0; i < 6; i++) {
1619                         NeighborType nt = NEIGHBOR_SAME_LEVEL;
1620                         switch (i) {
1621                                 case 0:
1622                                         nt = NEIGHBOR_UPPER;
1623                                         break;
1624                                 case 1:
1625                                         nt = NEIGHBOR_LOWER;
1626                                         break;
1627                         }
1628                         v3s16 npos = p0 + dirs[i];
1629                         NodeNeighbor nb = {getNodeNoEx(npos), nt, npos};
1630                         switch (content_features(nb.n.d).liquid_type) {
1631                                 case LIQUID_NONE:
1632                                         if (nb.n.d == CONTENT_AIR) {
1633                                                 airs[num_airs++] = nb;
1634                                                 // if the current node happens to be a flowing node, it will start to flow down here.
1635                                                 if (nb.t == NEIGHBOR_LOWER)
1636                                                         flowing_down = true;
1637                                         } else {
1638                                                 neutrals[num_neutrals++] = nb;
1639                                         }
1640                                         break;
1641                                 case LIQUID_SOURCE:
1642                                         // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
1643                                         if (liquid_kind == CONTENT_AIR)
1644                                                 liquid_kind = content_features(nb.n.d).liquid_alternative_flowing;
1645                                         if (content_features(nb.n.d).liquid_alternative_flowing !=liquid_kind) {
1646                                                 neutrals[num_neutrals++] = nb;
1647                                         } else {
1648                                                 sources[num_sources++] = nb;
1649                                         }
1650                                         break;
1651                                 case LIQUID_FLOWING:
1652                                         // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
1653                                         if (liquid_kind == CONTENT_AIR)
1654                                                 liquid_kind = content_features(nb.n.d).liquid_alternative_flowing;
1655                                         if (content_features(nb.n.d).liquid_alternative_flowing != liquid_kind) {
1656                                                 neutrals[num_neutrals++] = nb;
1657                                         } else {
1658                                                 flows[num_flows++] = nb;
1659                                                 if (nb.t == NEIGHBOR_LOWER)
1660                                                         flowing_down = true;
1661                                         }
1662                                         break;
1663                         }
1664                 }
1665
1666                 /*
1667                         decide on the type (and possibly level) of the current node
1668                  */
1669                 u8 new_node_content;
1670                 s8 new_node_level = -1;
1671                 if (num_sources >= 2 || liquid_type == LIQUID_SOURCE) {
1672                         // liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
1673                         // or the flowing alternative of the first of the surrounding sources (if it's air), so
1674                         // it's perfectly safe to use liquid_kind here to determine the new node content.
1675                         new_node_content = content_features(liquid_kind).liquid_alternative_source;
1676                 } else if (num_sources == 1 && sources[0].t != NEIGHBOR_LOWER) {
1677                         // liquid_kind is set properly, see above
1678                         new_node_content = liquid_kind;
1679                         new_node_level = 7;
1680                 } else {
1681                         // no surrounding sources, so get the maximum level that can flow into this node
1682                         for (u16 i = 0; i < num_flows; i++) {
1683                                 u8 nb_liquid_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
1684                                 switch (flows[i].t) {
1685                                         case NEIGHBOR_UPPER:
1686                                                 if (nb_liquid_level + WATER_DROP_BOOST > new_node_level) {
1687                                                         new_node_level = 7;
1688                                                         if (nb_liquid_level + WATER_DROP_BOOST < 7)
1689                                                                 new_node_level = nb_liquid_level + WATER_DROP_BOOST;
1690                                                 }
1691                                                 break;
1692                                         case NEIGHBOR_LOWER:
1693                                                 break;
1694                                         case NEIGHBOR_SAME_LEVEL:
1695                                                 if ((flows[i].n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK &&
1696                                                         nb_liquid_level > 0 && nb_liquid_level - 1 > new_node_level) {
1697                                                         new_node_level = nb_liquid_level - 1;
1698                                                 }
1699                                                 break;
1700                                 }
1701                         }
1702                         // don't flow as far in open terrain - if there isn't at least one adjacent solid block,
1703                         // substract another unit from the resulting water level.
1704                         if (!flowing_down && new_node_level >= 1) {
1705                                 bool at_wall = false;
1706                                 for (u16 i = 0; i < num_neutrals; i++) {
1707                                         if (neutrals[i].t == NEIGHBOR_SAME_LEVEL) {
1708                                                 at_wall = true;
1709                                                 break;
1710                                         }
1711                                 }
1712                                 if (!at_wall)
1713                                         new_node_level -= 1;
1714                         }
1715
1716                         if (new_node_level >= 0)
1717                                 new_node_content = liquid_kind;
1718                         else
1719                                 new_node_content = CONTENT_AIR;
1720                 }
1721
1722                 /*
1723                         check if anything has changed. if not, just continue with the next node.
1724                  */
1725                 if (new_node_content == n0.d && (content_features(n0.d).liquid_type != LIQUID_FLOWING ||
1726                                                                                  ((n0.param2 & LIQUID_LEVEL_MASK) == (u8)new_node_level &&
1727                                                                                  ((n0.param2 & LIQUID_FLOW_DOWN_MASK) == LIQUID_FLOW_DOWN_MASK)
1728                                                                                  == flowing_down)))
1729                         continue;
1730
1731
1732                 /*
1733                         update the current node
1734                  */
1735                 bool flow_down_enabled = (flowing_down && ((n0.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK));
1736                 n0.d = new_node_content;
1737                 if (content_features(n0.d).liquid_type == LIQUID_FLOWING) {
1738                         // set level to last 3 bits, flowing down bit to 4th bit
1739                         n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
1740                 } else {
1741                         n0.param2 = 0;
1742                 }
1743                 setNode(p0, n0);
1744                 v3s16 blockpos = getNodeBlockPos(p0);
1745                 MapBlock *block = getBlockNoCreateNoEx(blockpos);
1746                 if(block != NULL)
1747                         modified_blocks.insert(blockpos, block);
1748
1749                 /*
1750                         enqueue neighbors for update if neccessary
1751                  */
1752                 switch (content_features(n0.d).liquid_type) {
1753                         case LIQUID_SOURCE:
1754                                 // make sure source flows into all neighboring nodes
1755                                 for (u16 i = 0; i < num_flows; i++)
1756                                         if (flows[i].t != NEIGHBOR_UPPER)
1757                                                 m_transforming_liquid.push_back(flows[i].p);
1758                                 for (u16 i = 0; i < num_airs; i++)
1759                                         if (airs[i].t != NEIGHBOR_UPPER)
1760                                                 m_transforming_liquid.push_back(airs[i].p);
1761                                 break;
1762                         case LIQUID_NONE:
1763                                 // this flow has turned to air; neighboring flows might need to do the same
1764                                 for (u16 i = 0; i < num_flows; i++)
1765                                         m_transforming_liquid.push_back(flows[i].p);
1766                                 break;
1767                         case LIQUID_FLOWING:
1768                                 for (u16 i = 0; i < num_flows; i++) {
1769                                         u8 flow_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
1770                                         // liquid_level is still the ORIGINAL level of this node.
1771                                         if (flows[i].t != NEIGHBOR_UPPER && ((flow_level < liquid_level || flow_level < new_node_level) ||
1772                                                 flow_down_enabled))
1773                                                 m_transforming_liquid.push_back(flows[i].p);
1774                                 }
1775                                 for (u16 i = 0; i < num_airs; i++) {
1776                                         if (airs[i].t != NEIGHBOR_UPPER && (airs[i].t == NEIGHBOR_LOWER || new_node_level > 0))
1777                                                 m_transforming_liquid.push_back(airs[i].p);
1778                                 }
1779                                 break;
1780                 }
1781
1782                 loopcount++;
1783                 //if(loopcount >= 100000)
1784                 if(loopcount >= initial_size * 10) {
1785                         break;
1786                 }
1787         }
1788         //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
1789 }
1790
1791 NodeMetadata* Map::getNodeMetadata(v3s16 p)
1792 {
1793         v3s16 blockpos = getNodeBlockPos(p);
1794         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1795         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1796         if(block == NULL)
1797         {
1798                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1799                                 <<std::endl;
1800                 return NULL;
1801         }
1802         NodeMetadata *meta = block->m_node_metadata.get(p_rel);
1803         return meta;
1804 }
1805
1806 void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
1807 {
1808         v3s16 blockpos = getNodeBlockPos(p);
1809         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1810         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1811         if(block == NULL)
1812         {
1813                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1814                                 <<std::endl;
1815                 return;
1816         }
1817         block->m_node_metadata.set(p_rel, meta);
1818 }
1819
1820 void Map::removeNodeMetadata(v3s16 p)
1821 {
1822         v3s16 blockpos = getNodeBlockPos(p);
1823         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1824         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1825         if(block == NULL)
1826         {
1827                 dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
1828                                 <<std::endl;
1829                 return;
1830         }
1831         block->m_node_metadata.remove(p_rel);
1832 }
1833
1834 void Map::nodeMetadataStep(float dtime,
1835                 core::map<v3s16, MapBlock*> &changed_blocks)
1836 {
1837         /*
1838                 NOTE:
1839                 Currently there is no way to ensure that all the necessary
1840                 blocks are loaded when this is run. (They might get unloaded)
1841                 NOTE: ^- Actually, that might not be so. In a quick test it
1842                 reloaded a block with a furnace when I walked back to it from
1843                 a distance.
1844         */
1845         core::map<v2s16, MapSector*>::Iterator si;
1846         si = m_sectors.getIterator();
1847         for(; si.atEnd() == false; si++)
1848         {
1849                 MapSector *sector = si.getNode()->getValue();
1850                 core::list< MapBlock * > sectorblocks;
1851                 sector->getBlocks(sectorblocks);
1852                 core::list< MapBlock * >::Iterator i;
1853                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
1854                 {
1855                         MapBlock *block = *i;
1856                         bool changed = block->m_node_metadata.step(dtime);
1857                         if(changed)
1858                                 changed_blocks[block->getPos()] = block;
1859                 }
1860         }
1861 }
1862
1863 /*
1864         ServerMap
1865 */
1866
1867 ServerMap::ServerMap(std::string savedir):
1868         Map(dout_server),
1869         m_seed(0),
1870         m_map_metadata_changed(true)
1871 {
1872         dstream<<__FUNCTION_NAME<<std::endl;
1873
1874         //m_chunksize = 8; // Takes a few seconds
1875
1876         m_seed = (((u64)(myrand()%0xffff)<<0)
1877                         + ((u64)(myrand()%0xffff)<<16)
1878                         + ((u64)(myrand()%0xffff)<<32)
1879                         + ((u64)(myrand()%0xffff)<<48));
1880
1881         /*
1882                 Experimental and debug stuff
1883         */
1884
1885         {
1886         }
1887
1888         /*
1889                 Try to load map; if not found, create a new one.
1890         */
1891
1892         m_savedir = savedir;
1893         m_map_saving_enabled = false;
1894
1895         try
1896         {
1897                 // If directory exists, check contents and load if possible
1898                 if(fs::PathExists(m_savedir))
1899                 {
1900                         // If directory is empty, it is safe to save into it.
1901                         if(fs::GetDirListing(m_savedir).size() == 0)
1902                         {
1903                                 dstream<<DTIME<<"Server: Empty save directory is valid."
1904                                                 <<std::endl;
1905                                 m_map_saving_enabled = true;
1906                         }
1907                         else
1908                         {
1909                                 try{
1910                                         // Load map metadata (seed, chunksize)
1911                                         loadMapMeta();
1912                                 }
1913                                 catch(FileNotGoodException &e){
1914                                         dstream<<DTIME<<"WARNING: Could not load map metadata"
1915                                                         //<<" Disabling chunk-based generator."
1916                                                         <<std::endl;
1917                                         //m_chunksize = 0;
1918                                 }
1919
1920                                 /*try{
1921                                         // Load chunk metadata
1922                                         loadChunkMeta();
1923                                 }
1924                                 catch(FileNotGoodException &e){
1925                                         dstream<<DTIME<<"WARNING: Could not load chunk metadata."
1926                                                         <<" Disabling chunk-based generator."
1927                                                         <<std::endl;
1928                                         m_chunksize = 0;
1929                                 }*/
1930
1931                                 /*dstream<<DTIME<<"Server: Successfully loaded chunk "
1932                                                 "metadata and sector (0,0) from "<<savedir<<
1933                                                 ", assuming valid save directory."
1934                                                 <<std::endl;*/
1935
1936                                 dstream<<DTIME<<"INFO: Server: Successfully loaded map "
1937                                                 <<"and chunk metadata from "<<savedir
1938                                                 <<", assuming valid save directory."
1939                                                 <<std::endl;
1940
1941                                 m_map_saving_enabled = true;
1942                                 // Map loaded, not creating new one
1943                                 return;
1944                         }
1945                 }
1946                 // If directory doesn't exist, it is safe to save to it
1947                 else{
1948                         m_map_saving_enabled = true;
1949                 }
1950         }
1951         catch(std::exception &e)
1952         {
1953                 dstream<<DTIME<<"WARNING: Server: Failed to load map from "<<savedir
1954                                 <<", exception: "<<e.what()<<std::endl;
1955                 dstream<<"Please remove the map or fix it."<<std::endl;
1956                 dstream<<"WARNING: Map saving will be disabled."<<std::endl;
1957         }
1958
1959         dstream<<DTIME<<"INFO: Initializing new map."<<std::endl;
1960
1961         // Create zero sector
1962         emergeSector(v2s16(0,0));
1963
1964         // Initially write whole map
1965         save(false);
1966 }
1967
1968 ServerMap::~ServerMap()
1969 {
1970         dstream<<__FUNCTION_NAME<<std::endl;
1971
1972         try
1973         {
1974                 if(m_map_saving_enabled)
1975                 {
1976                         // Save only changed parts
1977                         save(true);
1978                         dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
1979                 }
1980                 else
1981                 {
1982                         dstream<<DTIME<<"Server: map not saved"<<std::endl;
1983                 }
1984         }
1985         catch(std::exception &e)
1986         {
1987                 dstream<<DTIME<<"Server: Failed to save map to "<<m_savedir
1988                                 <<", exception: "<<e.what()<<std::endl;
1989         }
1990
1991 #if 0
1992         /*
1993                 Free all MapChunks
1994         */
1995         core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
1996         for(; i.atEnd() == false; i++)
1997         {
1998                 MapChunk *chunk = i.getNode()->getValue();
1999                 delete chunk;
2000         }
2001 #endif
2002 }
2003
2004 void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
2005 {
2006         /*dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2007                         <<blockpos.Z<<")"<<std::endl;*/
2008
2009         data->no_op = false;
2010         data->seed = m_seed;
2011         data->blockpos = blockpos;
2012
2013         /*
2014                 Create the whole area of this and the neighboring blocks
2015         */
2016         {
2017                 //TimeTaker timer("initBlockMake() create area");
2018
2019                 for(s16 x=-1; x<=1; x++)
2020                 for(s16 z=-1; z<=1; z++)
2021                 {
2022                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2023                         // Sector metadata is loaded from disk if not already loaded.
2024                         ServerMapSector *sector = createSector(sectorpos);
2025                         assert(sector);
2026
2027                         for(s16 y=-1; y<=1; y++)
2028                         {
2029                                 MapBlock *block = createBlock(blockpos);
2030
2031                                 // Lighting won't be calculated
2032                                 block->setLightingExpired(true);
2033                                 // Lighting will be calculated
2034                                 //block->setLightingExpired(false);
2035
2036                                 /*
2037                                         Block gets sunlight if this is true.
2038
2039                                         This should be set to true when the top side of a block
2040                                         is completely exposed to the sky.
2041                                 */
2042                                 block->setIsUnderground(false);
2043                         }
2044                 }
2045         }
2046
2047         /*
2048                 Now we have a big empty area.
2049
2050                 Make a ManualMapVoxelManipulator that contains this and the
2051                 neighboring blocks
2052         */
2053
2054         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2055         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2056
2057         data->vmanip = new ManualMapVoxelManipulator(this);
2058         //data->vmanip->setMap(this);
2059
2060         // Add the area
2061         {
2062                 //TimeTaker timer("initBlockMake() initialEmerge");
2063                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2064         }
2065
2066         // Data is ready now.
2067 }
2068
2069 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2070                 core::map<v3s16, MapBlock*> &changed_blocks)
2071 {
2072         v3s16 blockpos = data->blockpos;
2073         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2074                         <<blockpos.Z<<")"<<std::endl;*/
2075
2076         if(data->no_op)
2077         {
2078                 dstream<<"finishBlockMake(): no-op"<<std::endl;
2079                 return NULL;
2080         }
2081
2082         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2083
2084         /*dstream<<"Resulting vmanip:"<<std::endl;
2085         data->vmanip.print(dstream);*/
2086
2087         /*
2088                 Blit generated stuff to map
2089                 NOTE: blitBackAll adds nearly everything to changed_blocks
2090         */
2091         {
2092                 // 70ms @cs=8
2093                 //TimeTaker timer("finishBlockMake() blitBackAll");
2094                 data->vmanip->blitBackAll(&changed_blocks);
2095         }
2096
2097         if(enable_mapgen_debug_info)
2098                 dstream<<"finishBlockMake: changed_blocks.size()="
2099                                 <<changed_blocks.size()<<std::endl;
2100
2101         /*
2102                 Copy transforming liquid information
2103         */
2104         while(data->transforming_liquid.size() > 0)
2105         {
2106                 v3s16 p = data->transforming_liquid.pop_front();
2107                 m_transforming_liquid.push_back(p);
2108         }
2109
2110         /*
2111                 Get central block
2112         */
2113         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2114         assert(block);
2115
2116         /*
2117                 Set is_underground flag for lighting with sunlight
2118         */
2119
2120         block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2121
2122         /*
2123                 Add sunlight to central block.
2124                 This makes in-dark-spawning monsters to not flood the whole thing.
2125                 Do not spread the light, though.
2126         */
2127         /*core::map<v3s16, bool> light_sources;
2128         bool black_air_left = false;
2129         block->propagateSunlight(light_sources, true, &black_air_left);*/
2130
2131         /*
2132                 NOTE: Lighting and object adding shouldn't really be here, but
2133                 lighting is a bit tricky to move properly to makeBlock.
2134                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2135                       - There needs to be some way for makeBlock to report back if
2136                             the lighting update is going further down because of the
2137                                 new block blocking light
2138         */
2139
2140         /*
2141                 Update lighting
2142                 NOTE: This takes ~60ms, TODO: Investigate why
2143         */
2144         {
2145                 TimeTaker t("finishBlockMake lighting update");
2146
2147                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2148                 // Center block
2149                 lighting_update_blocks.insert(block->getPos(), block);
2150         #if 0
2151                 // All modified blocks
2152                 for(core::map<v3s16, MapBlock*>::Iterator
2153                                 i = changed_blocks.getIterator();
2154                                 i.atEnd() == false; i++)
2155                 {
2156                         lighting_update_blocks.insert(i.getNode()->getKey(),
2157                                         i.getNode()->getValue());
2158                 }
2159         #endif
2160                 updateLighting(lighting_update_blocks, changed_blocks);
2161
2162                 if(enable_mapgen_debug_info == false)
2163                         t.stop(true); // Hide output
2164         }
2165
2166         /*
2167                 Add random objects to block
2168         */
2169         mapgen::add_random_objects(block);
2170
2171         /*
2172                 Go through changed blocks
2173         */
2174         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2175                         i.atEnd() == false; i++)
2176         {
2177                 MapBlock *block = i.getNode()->getValue();
2178                 assert(block);
2179                 /*
2180                         Update day/night difference cache of the MapBlocks
2181                 */
2182                 block->updateDayNightDiff();
2183                 /*
2184                         Set block as modified
2185                 */
2186                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2187         }
2188
2189         /*
2190                 Set central block as generated
2191         */
2192         block->setGenerated(true);
2193
2194         /*
2195                 Save changed parts of map
2196                 NOTE: Will be saved later.
2197         */
2198         //save(true);
2199
2200         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2201                         <<blockpos.Z<<")"<<std::endl;*/
2202
2203         return block;
2204 }
2205
2206 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2207 {
2208         DSTACKF("%s: p2d=(%d,%d)",
2209                         __FUNCTION_NAME,
2210                         p2d.X, p2d.Y);
2211
2212         /*
2213                 Check if it exists already in memory
2214         */
2215         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2216         if(sector != NULL)
2217                 return sector;
2218
2219         /*
2220                 Try to load it from disk (with blocks)
2221         */
2222         //if(loadSectorFull(p2d) == true)
2223
2224         /*
2225                 Try to load metadata from disk
2226         */
2227         if(loadSectorMeta(p2d) == true)
2228         {
2229                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2230                 if(sector == NULL)
2231                 {
2232                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2233                         throw InvalidPositionException("");
2234                 }
2235                 return sector;
2236         }
2237
2238         /*
2239                 Do not create over-limit
2240         */
2241         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2242         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2243         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2244         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2245                 throw InvalidPositionException("createSector(): pos. over limit");
2246
2247         /*
2248                 Generate blank sector
2249         */
2250
2251         sector = new ServerMapSector(this, p2d);
2252
2253         // Sector position on map in nodes
2254         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2255
2256         /*
2257                 Insert to container
2258         */
2259         m_sectors.insert(p2d, sector);
2260
2261         return sector;
2262 }
2263
2264 /*
2265         This is a quick-hand function for calling makeBlock().
2266 */
2267 MapBlock * ServerMap::generateBlock(
2268                 v3s16 p,
2269                 core::map<v3s16, MapBlock*> &modified_blocks
2270 )
2271 {
2272         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2273
2274         /*dstream<<"generateBlock(): "
2275                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2276                         <<std::endl;*/
2277
2278         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2279
2280         TimeTaker timer("generateBlock");
2281
2282         //MapBlock *block = original_dummy;
2283
2284         v2s16 p2d(p.X, p.Z);
2285         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2286
2287         /*
2288                 Do not generate over-limit
2289         */
2290         if(blockpos_over_limit(p))
2291         {
2292                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2293                 throw InvalidPositionException("generateBlock(): pos. over limit");
2294         }
2295
2296         /*
2297                 Create block make data
2298         */
2299         mapgen::BlockMakeData data;
2300         initBlockMake(&data, p);
2301
2302         /*
2303                 Generate block
2304         */
2305         {
2306                 TimeTaker t("mapgen::make_block()");
2307                 mapgen::make_block(&data);
2308
2309                 if(enable_mapgen_debug_info == false)
2310                         t.stop(true); // Hide output
2311         }
2312
2313         /*
2314                 Blit data back on map, update lighting, add mobs and whatever this does
2315         */
2316         finishBlockMake(&data, modified_blocks);
2317
2318         /*
2319                 Get central block
2320         */
2321         MapBlock *block = getBlockNoCreateNoEx(p);
2322         assert(block);
2323
2324 #if 0
2325         /*
2326                 Check result
2327         */
2328         bool erroneus_content = false;
2329         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2330         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2331         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2332         {
2333                 v3s16 p(x0,y0,z0);
2334                 MapNode n = block->getNode(p);
2335                 if(n.d == CONTENT_IGNORE)
2336                 {
2337                         dstream<<"CONTENT_IGNORE at "
2338                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2339                                         <<std::endl;
2340                         erroneus_content = true;
2341                         assert(0);
2342                 }
2343         }
2344         if(erroneus_content)
2345         {
2346                 assert(0);
2347         }
2348 #endif
2349
2350 #if 0
2351         /*
2352                 Generate a completely empty block
2353         */
2354         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2355         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2356         {
2357                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2358                 {
2359                         MapNode n;
2360                         if(y0%2==0)
2361                                 n.d = CONTENT_AIR;
2362                         else
2363                                 n.d = CONTENT_STONE;
2364                         block->setNode(v3s16(x0,y0,z0), n);
2365                 }
2366         }
2367 #endif
2368
2369         if(enable_mapgen_debug_info == false)
2370                 timer.stop(true); // Hide output
2371
2372         return block;
2373 }
2374
2375 MapBlock * ServerMap::createBlock(v3s16 p)
2376 {
2377         DSTACKF("%s: p=(%d,%d,%d)",
2378                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2379
2380         /*
2381                 Do not create over-limit
2382         */
2383         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2384         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2385         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2386         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2387         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2388         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2389                 throw InvalidPositionException("createBlock(): pos. over limit");
2390
2391         v2s16 p2d(p.X, p.Z);
2392         s16 block_y = p.Y;
2393         /*
2394                 This will create or load a sector if not found in memory.
2395                 If block exists on disk, it will be loaded.
2396
2397                 NOTE: On old save formats, this will be slow, as it generates
2398                       lighting on blocks for them.
2399         */
2400         ServerMapSector *sector;
2401         try{
2402                 sector = (ServerMapSector*)createSector(p2d);
2403                 assert(sector->getId() == MAPSECTOR_SERVER);
2404         }
2405         catch(InvalidPositionException &e)
2406         {
2407                 dstream<<"createBlock: createSector() failed"<<std::endl;
2408                 throw e;
2409         }
2410         /*
2411                 NOTE: This should not be done, or at least the exception
2412                 should not be passed on as std::exception, because it
2413                 won't be catched at all.
2414         */
2415         /*catch(std::exception &e)
2416         {
2417                 dstream<<"createBlock: createSector() failed: "
2418                                 <<e.what()<<std::endl;
2419                 throw e;
2420         }*/
2421
2422         /*
2423                 Try to get a block from the sector
2424         */
2425
2426         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2427         if(block)
2428         {
2429                 if(block->isDummy())
2430                         block->unDummify();
2431                 return block;
2432         }
2433         // Create blank
2434         block = sector->createBlankBlock(block_y);
2435         return block;
2436 }
2437
2438 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2439 {
2440         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2441                         __FUNCTION_NAME,
2442                         p.X, p.Y, p.Z, allow_generate);
2443
2444         {
2445                 MapBlock *block = getBlockNoCreateNoEx(p);
2446                 if(block)
2447                         return block;
2448         }
2449
2450         {
2451                 MapBlock *block = loadBlock(p);
2452                 if(block)
2453                         return block;
2454         }
2455
2456         if(allow_generate)
2457         {
2458                 core::map<v3s16, MapBlock*> modified_blocks;
2459                 MapBlock *block = generateBlock(p, modified_blocks);
2460                 if(block)
2461                 {
2462                         MapEditEvent event;
2463                         event.type = MEET_OTHER;
2464                         event.p = p;
2465
2466                         // Copy modified_blocks to event
2467                         for(core::map<v3s16, MapBlock*>::Iterator
2468                                         i = modified_blocks.getIterator();
2469                                         i.atEnd()==false; i++)
2470                         {
2471                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2472                         }
2473
2474                         // Queue event
2475                         dispatchEvent(&event);
2476
2477                         return block;
2478                 }
2479         }
2480
2481         return NULL;
2482 }
2483
2484 #if 0
2485         /*
2486                 Do not generate over-limit
2487         */
2488         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2489         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2490         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2491         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2492         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2493         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2494                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2495
2496         v2s16 p2d(p.X, p.Z);
2497         s16 block_y = p.Y;
2498         /*
2499                 This will create or load a sector if not found in memory.
2500                 If block exists on disk, it will be loaded.
2501         */
2502         ServerMapSector *sector;
2503         try{
2504                 sector = createSector(p2d);
2505                 //sector = emergeSector(p2d, changed_blocks);
2506         }
2507         catch(InvalidPositionException &e)
2508         {
2509                 dstream<<"emergeBlock: createSector() failed: "
2510                                 <<e.what()<<std::endl;
2511                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2512                                 <<std::endl
2513                                 <<"You could try to delete it."<<std::endl;
2514                 throw e;
2515         }
2516         catch(VersionMismatchException &e)
2517         {
2518                 dstream<<"emergeBlock: createSector() failed: "
2519                                 <<e.what()<<std::endl;
2520                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2521                                 <<std::endl
2522                                 <<"You could try to delete it."<<std::endl;
2523                 throw e;
2524         }
2525
2526         /*
2527                 Try to get a block from the sector
2528         */
2529
2530         bool does_not_exist = false;
2531         bool lighting_expired = false;
2532         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2533
2534         // If not found, try loading from disk
2535         if(block == NULL)
2536         {
2537                 block = loadBlock(p);
2538         }
2539
2540         // Handle result
2541         if(block == NULL)
2542         {
2543                 does_not_exist = true;
2544         }
2545         else if(block->isDummy() == true)
2546         {
2547                 does_not_exist = true;
2548         }
2549         else if(block->getLightingExpired())
2550         {
2551                 lighting_expired = true;
2552         }
2553         else
2554         {
2555                 // Valid block
2556                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2557                 return block;
2558         }
2559
2560         /*
2561                 If block was not found on disk and not going to generate a
2562                 new one, make sure there is a dummy block in place.
2563         */
2564         if(only_from_disk && (does_not_exist || lighting_expired))
2565         {
2566                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2567
2568                 if(block == NULL)
2569                 {
2570                         // Create dummy block
2571                         block = new MapBlock(this, p, true);
2572
2573                         // Add block to sector
2574                         sector->insertBlock(block);
2575                 }
2576                 // Done.
2577                 return block;
2578         }
2579
2580         //dstream<<"Not found on disk, generating."<<std::endl;
2581         // 0ms
2582         //TimeTaker("emergeBlock() generate");
2583
2584         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2585
2586         /*
2587                 If the block doesn't exist, generate the block.
2588         */
2589         if(does_not_exist)
2590         {
2591                 block = generateBlock(p, block, sector, changed_blocks,
2592                                 lighting_invalidated_blocks);
2593         }
2594
2595         if(lighting_expired)
2596         {
2597                 lighting_invalidated_blocks.insert(p, block);
2598         }
2599
2600 #if 0
2601         /*
2602                 Initially update sunlight
2603         */
2604         {
2605                 core::map<v3s16, bool> light_sources;
2606                 bool black_air_left = false;
2607                 bool bottom_invalid =
2608                                 block->propagateSunlight(light_sources, true,
2609                                 &black_air_left);
2610
2611                 // If sunlight didn't reach everywhere and part of block is
2612                 // above ground, lighting has to be properly updated
2613                 //if(black_air_left && some_part_underground)
2614                 if(black_air_left)
2615                 {
2616                         lighting_invalidated_blocks[block->getPos()] = block;
2617                 }
2618
2619                 if(bottom_invalid)
2620                 {
2621                         lighting_invalidated_blocks[block->getPos()] = block;
2622                 }
2623         }
2624 #endif
2625
2626         return block;
2627 }
2628 #endif
2629
2630 s16 ServerMap::findGroundLevel(v2s16 p2d)
2631 {
2632 #if 0
2633         /*
2634                 Uh, just do something random...
2635         */
2636         // Find existing map from top to down
2637         s16 max=63;
2638         s16 min=-64;
2639         v3s16 p(p2d.X, max, p2d.Y);
2640         for(; p.Y>min; p.Y--)
2641         {
2642                 MapNode n = getNodeNoEx(p);
2643                 if(n.d != CONTENT_IGNORE)
2644                         break;
2645         }
2646         if(p.Y == min)
2647                 goto plan_b;
2648         // If this node is not air, go to plan b
2649         if(getNodeNoEx(p).d != CONTENT_AIR)
2650                 goto plan_b;
2651         // Search existing walkable and return it
2652         for(; p.Y>min; p.Y--)
2653         {
2654                 MapNode n = getNodeNoEx(p);
2655                 if(content_walkable(n.d) && n.d != CONTENT_IGNORE)
2656                         return p.Y;
2657         }
2658
2659         // Move to plan b
2660 plan_b:
2661 #endif
2662
2663         /*
2664                 Determine from map generator noise functions
2665         */
2666
2667         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2668         return level;
2669
2670         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2671         //return (s16)level;
2672 }
2673
2674 void ServerMap::createDirs(std::string path)
2675 {
2676         if(fs::CreateAllDirs(path) == false)
2677         {
2678                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2679                                 <<"\""<<path<<"\""<<std::endl;
2680                 throw BaseException("ServerMap failed to create directory");
2681         }
2682 }
2683
2684 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2685 {
2686         char cc[9];
2687         switch(layout)
2688         {
2689                 case 1:
2690                         snprintf(cc, 9, "%.4x%.4x",
2691                                 (unsigned int)pos.X&0xffff,
2692                                 (unsigned int)pos.Y&0xffff);
2693
2694                         return m_savedir + "/sectors/" + cc;
2695                 case 2:
2696                         snprintf(cc, 9, "%.3x/%.3x",
2697                                 (unsigned int)pos.X&0xfff,
2698                                 (unsigned int)pos.Y&0xfff);
2699
2700                         return m_savedir + "/sectors2/" + cc;
2701                 default:
2702                         assert(false);
2703         }
2704 }
2705
2706 v2s16 ServerMap::getSectorPos(std::string dirname)
2707 {
2708         unsigned int x, y;
2709         int r;
2710         size_t spos = dirname.rfind('/') + 1;
2711         assert(spos != std::string::npos);
2712         if(dirname.size() - spos == 8)
2713         {
2714                 // Old layout
2715                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2716         }
2717         else if(dirname.size() - spos == 3)
2718         {
2719                 // New layout
2720                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2721                 // Sign-extend the 12 bit values up to 16 bits...
2722                 if(x&0x800) x|=0xF000;
2723                 if(y&0x800) y|=0xF000;
2724         }
2725         else
2726         {
2727                 assert(false);
2728         }
2729         assert(r == 2);
2730         v2s16 pos((s16)x, (s16)y);
2731         return pos;
2732 }
2733
2734 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2735 {
2736         v2s16 p2d = getSectorPos(sectordir);
2737
2738         if(blockfile.size() != 4){
2739                 throw InvalidFilenameException("Invalid block filename");
2740         }
2741         unsigned int y;
2742         int r = sscanf(blockfile.c_str(), "%4x", &y);
2743         if(r != 1)
2744                 throw InvalidFilenameException("Invalid block filename");
2745         return v3s16(p2d.X, y, p2d.Y);
2746 }
2747
2748 std::string ServerMap::getBlockFilename(v3s16 p)
2749 {
2750         char cc[5];
2751         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2752         return cc;
2753 }
2754
2755 void ServerMap::save(bool only_changed)
2756 {
2757         DSTACK(__FUNCTION_NAME);
2758         if(m_map_saving_enabled == false)
2759         {
2760                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2761                 return;
2762         }
2763
2764         if(only_changed == false)
2765                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2766                                 <<std::endl;
2767
2768         if(only_changed == false || m_map_metadata_changed)
2769         {
2770                 saveMapMeta();
2771         }
2772
2773         u32 sector_meta_count = 0;
2774         u32 block_count = 0;
2775         u32 block_count_all = 0; // Number of blocks in memory
2776
2777         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2778         for(; i.atEnd() == false; i++)
2779         {
2780                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2781                 assert(sector->getId() == MAPSECTOR_SERVER);
2782
2783                 if(sector->differs_from_disk || only_changed == false)
2784                 {
2785                         saveSectorMeta(sector);
2786                         sector_meta_count++;
2787                 }
2788                 core::list<MapBlock*> blocks;
2789                 sector->getBlocks(blocks);
2790                 core::list<MapBlock*>::Iterator j;
2791                 for(j=blocks.begin(); j!=blocks.end(); j++)
2792                 {
2793                         MapBlock *block = *j;
2794
2795                         block_count_all++;
2796
2797                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2798                                         || only_changed == false)
2799                         {
2800                                 saveBlock(block);
2801                                 block_count++;
2802
2803                                 /*dstream<<"ServerMap: Written block ("
2804                                                 <<block->getPos().X<<","
2805                                                 <<block->getPos().Y<<","
2806                                                 <<block->getPos().Z<<")"
2807                                                 <<std::endl;*/
2808                         }
2809                 }
2810         }
2811
2812         /*
2813                 Only print if something happened or saved whole map
2814         */
2815         if(only_changed == false || sector_meta_count != 0
2816                         || block_count != 0)
2817         {
2818                 dstream<<DTIME<<"ServerMap: Written: "
2819                                 <<sector_meta_count<<" sector metadata files, "
2820                                 <<block_count<<" block files"
2821                                 <<", "<<block_count_all<<" blocks in memory."
2822                                 <<std::endl;
2823         }
2824 }
2825
2826 void ServerMap::saveMapMeta()
2827 {
2828         DSTACK(__FUNCTION_NAME);
2829
2830         dstream<<"INFO: ServerMap::saveMapMeta(): "
2831                         <<"seed="<<m_seed
2832                         <<std::endl;
2833
2834         createDirs(m_savedir);
2835
2836         std::string fullpath = m_savedir + "/map_meta.txt";
2837         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2838         if(os.good() == false)
2839         {
2840                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2841                                 <<"could not open"<<fullpath<<std::endl;
2842                 throw FileNotGoodException("Cannot open chunk metadata");
2843         }
2844
2845         Settings params;
2846         params.setU64("seed", m_seed);
2847
2848         params.writeLines(os);
2849
2850         os<<"[end_of_params]\n";
2851
2852         m_map_metadata_changed = false;
2853 }
2854
2855 void ServerMap::loadMapMeta()
2856 {
2857         DSTACK(__FUNCTION_NAME);
2858
2859         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2860                         <<std::endl;
2861
2862         std::string fullpath = m_savedir + "/map_meta.txt";
2863         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2864         if(is.good() == false)
2865         {
2866                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2867                                 <<"could not open"<<fullpath<<std::endl;
2868                 throw FileNotGoodException("Cannot open map metadata");
2869         }
2870
2871         Settings params;
2872
2873         for(;;)
2874         {
2875                 if(is.eof())
2876                         throw SerializationError
2877                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2878                 std::string line;
2879                 std::getline(is, line);
2880                 std::string trimmedline = trim(line);
2881                 if(trimmedline == "[end_of_params]")
2882                         break;
2883                 params.parseConfigLine(line);
2884         }
2885
2886         m_seed = params.getU64("seed");
2887
2888         dstream<<"INFO: ServerMap::loadMapMeta(): "
2889                         <<"seed="<<m_seed
2890                         <<std::endl;
2891 }
2892
2893 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2894 {
2895         DSTACK(__FUNCTION_NAME);
2896         // Format used for writing
2897         u8 version = SER_FMT_VER_HIGHEST;
2898         // Get destination
2899         v2s16 pos = sector->getPos();
2900         std::string dir = getSectorDir(pos);
2901         createDirs(dir);
2902
2903         std::string fullpath = dir + "/meta";
2904         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2905         if(o.good() == false)
2906                 throw FileNotGoodException("Cannot open sector metafile");
2907
2908         sector->serialize(o, version);
2909
2910         sector->differs_from_disk = false;
2911 }
2912
2913 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
2914 {
2915         DSTACK(__FUNCTION_NAME);
2916         // Get destination
2917         v2s16 p2d = getSectorPos(sectordir);
2918
2919         ServerMapSector *sector = NULL;
2920
2921         std::string fullpath = sectordir + "/meta";
2922         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2923         if(is.good() == false)
2924         {
2925                 // If the directory exists anyway, it probably is in some old
2926                 // format. Just go ahead and create the sector.
2927                 if(fs::PathExists(sectordir))
2928                 {
2929                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
2930                                         <<fullpath<<" doesn't exist but directory does."
2931                                         <<" Continuing with a sector with no metadata."
2932                                         <<std::endl;*/
2933                         sector = new ServerMapSector(this, p2d);
2934                         m_sectors.insert(p2d, sector);
2935                 }
2936                 else
2937                 {
2938                         throw FileNotGoodException("Cannot open sector metafile");
2939                 }
2940         }
2941         else
2942         {
2943                 sector = ServerMapSector::deSerialize
2944                                 (is, this, p2d, m_sectors);
2945                 if(save_after_load)
2946                         saveSectorMeta(sector);
2947         }
2948
2949         sector->differs_from_disk = false;
2950
2951         return sector;
2952 }
2953
2954 bool ServerMap::loadSectorMeta(v2s16 p2d)
2955 {
2956         DSTACK(__FUNCTION_NAME);
2957
2958         MapSector *sector = NULL;
2959
2960         // The directory layout we're going to load from.
2961         //  1 - original sectors/xxxxzzzz/
2962         //  2 - new sectors2/xxx/zzz/
2963         //  If we load from anything but the latest structure, we will
2964         //  immediately save to the new one, and remove the old.
2965         int loadlayout = 1;
2966         std::string sectordir1 = getSectorDir(p2d, 1);
2967         std::string sectordir;
2968         if(fs::PathExists(sectordir1))
2969         {
2970                 sectordir = sectordir1;
2971         }
2972         else
2973         {
2974                 loadlayout = 2;
2975                 sectordir = getSectorDir(p2d, 2);
2976         }
2977
2978         try{
2979                 sector = loadSectorMeta(sectordir, loadlayout != 2);
2980         }
2981         catch(InvalidFilenameException &e)
2982         {
2983                 return false;
2984         }
2985         catch(FileNotGoodException &e)
2986         {
2987                 return false;
2988         }
2989         catch(std::exception &e)
2990         {
2991                 return false;
2992         }
2993
2994         return true;
2995 }
2996
2997 #if 0
2998 bool ServerMap::loadSectorFull(v2s16 p2d)
2999 {
3000         DSTACK(__FUNCTION_NAME);
3001
3002         MapSector *sector = NULL;
3003
3004         // The directory layout we're going to load from.
3005         //  1 - original sectors/xxxxzzzz/
3006         //  2 - new sectors2/xxx/zzz/
3007         //  If we load from anything but the latest structure, we will
3008         //  immediately save to the new one, and remove the old.
3009         int loadlayout = 1;
3010         std::string sectordir1 = getSectorDir(p2d, 1);
3011         std::string sectordir;
3012         if(fs::PathExists(sectordir1))
3013         {
3014                 sectordir = sectordir1;
3015         }
3016         else
3017         {
3018                 loadlayout = 2;
3019                 sectordir = getSectorDir(p2d, 2);
3020         }
3021
3022         try{
3023                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3024         }
3025         catch(InvalidFilenameException &e)
3026         {
3027                 return false;
3028         }
3029         catch(FileNotGoodException &e)
3030         {
3031                 return false;
3032         }
3033         catch(std::exception &e)
3034         {
3035                 return false;
3036         }
3037
3038         /*
3039                 Load blocks
3040         */
3041         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3042                         (sectordir);
3043         std::vector<fs::DirListNode>::iterator i2;
3044         for(i2=list2.begin(); i2!=list2.end(); i2++)
3045         {
3046                 // We want files
3047                 if(i2->dir)
3048                         continue;
3049                 try{
3050                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3051                 }
3052                 catch(InvalidFilenameException &e)
3053                 {
3054                         // This catches unknown crap in directory
3055                 }
3056         }
3057
3058         if(loadlayout != 2)
3059         {
3060                 dstream<<"Sector converted to new layout - deleting "<<
3061                         sectordir1<<std::endl;
3062                 fs::RecursiveDelete(sectordir1);
3063         }
3064
3065         return true;
3066 }
3067 #endif
3068
3069 void ServerMap::saveBlock(MapBlock *block)
3070 {
3071         DSTACK(__FUNCTION_NAME);
3072         /*
3073                 Dummy blocks are not written
3074         */
3075         if(block->isDummy())
3076         {
3077                 /*v3s16 p = block->getPos();
3078                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3079                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3080                 return;
3081         }
3082
3083         // Format used for writing
3084         u8 version = SER_FMT_VER_HIGHEST;
3085         // Get destination
3086         v3s16 p3d = block->getPos();
3087
3088         v2s16 p2d(p3d.X, p3d.Z);
3089         std::string sectordir = getSectorDir(p2d);
3090
3091         createDirs(sectordir);
3092
3093         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3094         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3095         if(o.good() == false)
3096                 throw FileNotGoodException("Cannot open block data");
3097
3098         /*
3099                 [0] u8 serialization version
3100                 [1] data
3101         */
3102         o.write((char*)&version, 1);
3103
3104         // Write basic data
3105         block->serialize(o, version);
3106
3107         // Write extra data stored on disk
3108         block->serializeDiskExtra(o, version);
3109
3110         // We just wrote it to the disk so clear modified flag
3111         block->resetModified();
3112 }
3113
3114 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3115 {
3116         DSTACK(__FUNCTION_NAME);
3117
3118         std::string fullpath = sectordir+"/"+blockfile;
3119         try{
3120
3121                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3122                 if(is.good() == false)
3123                         throw FileNotGoodException("Cannot open block file");
3124
3125                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3126                 v2s16 p2d(p3d.X, p3d.Z);
3127
3128                 assert(sector->getPos() == p2d);
3129
3130                 u8 version = SER_FMT_VER_INVALID;
3131                 is.read((char*)&version, 1);
3132
3133                 if(is.fail())
3134                         throw SerializationError("ServerMap::loadBlock(): Failed"
3135                                         " to read MapBlock version");
3136
3137                 /*u32 block_size = MapBlock::serializedLength(version);
3138                 SharedBuffer<u8> data(block_size);
3139                 is.read((char*)*data, block_size);*/
3140
3141                 // This will always return a sector because we're the server
3142                 //MapSector *sector = emergeSector(p2d);
3143
3144                 MapBlock *block = NULL;
3145                 bool created_new = false;
3146                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3147                 if(block == NULL)
3148                 {
3149                         block = sector->createBlankBlockNoInsert(p3d.Y);
3150                         created_new = true;
3151                 }
3152
3153                 // Read basic data
3154                 block->deSerialize(is, version);
3155
3156                 // Read extra data stored on disk
3157                 block->deSerializeDiskExtra(is, version);
3158
3159                 // If it's a new block, insert it to the map
3160                 if(created_new)
3161                         sector->insertBlock(block);
3162
3163                 /*
3164                         Save blocks loaded in old format in new format
3165                 */
3166
3167                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3168                 {
3169                         saveBlock(block);
3170                 }
3171
3172                 // We just loaded it from the disk, so it's up-to-date.
3173                 block->resetModified();
3174
3175         }
3176         catch(SerializationError &e)
3177         {
3178                 dstream<<"WARNING: Invalid block data on disk "
3179                                 <<"fullpath="<<fullpath
3180                                 <<" (SerializationError). "
3181                                 <<"what()="<<e.what()
3182                                 <<std::endl;
3183                                 //" Ignoring. A new one will be generated.
3184                 assert(0);
3185
3186                 // TODO: Backup file; name is in fullpath.
3187         }
3188 }
3189
3190 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3191 {
3192         DSTACK(__FUNCTION_NAME);
3193
3194         v2s16 p2d(blockpos.X, blockpos.Z);
3195
3196         // The directory layout we're going to load from.
3197         //  1 - original sectors/xxxxzzzz/
3198         //  2 - new sectors2/xxx/zzz/
3199         //  If we load from anything but the latest structure, we will
3200         //  immediately save to the new one, and remove the old.
3201         int loadlayout = 1;
3202         std::string sectordir1 = getSectorDir(p2d, 1);
3203         std::string sectordir;
3204         if(fs::PathExists(sectordir1))
3205         {
3206                 sectordir = sectordir1;
3207         }
3208         else
3209         {
3210                 loadlayout = 2;
3211                 sectordir = getSectorDir(p2d, 2);
3212         }
3213
3214         /*
3215                 Make sure sector is loaded
3216         */
3217         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3218         if(sector == NULL)
3219         {
3220                 try{
3221                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3222                 }
3223                 catch(InvalidFilenameException &e)
3224                 {
3225                         return false;
3226                 }
3227                 catch(FileNotGoodException &e)
3228                 {
3229                         return false;
3230                 }
3231                 catch(std::exception &e)
3232                 {
3233                         return false;
3234                 }
3235         }
3236
3237         /*
3238                 Make sure file exists
3239         */
3240
3241         std::string blockfilename = getBlockFilename(blockpos);
3242         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3243                 return NULL;
3244
3245         /*
3246                 Load block
3247         */
3248         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3249         return getBlockNoCreateNoEx(blockpos);
3250 }
3251
3252 void ServerMap::PrintInfo(std::ostream &out)
3253 {
3254         out<<"ServerMap: ";
3255 }
3256
3257 #ifndef SERVER
3258
3259 /*
3260         ClientMap
3261 */
3262
3263 ClientMap::ClientMap(
3264                 Client *client,
3265                 MapDrawControl &control,
3266                 scene::ISceneNode* parent,
3267                 scene::ISceneManager* mgr,
3268                 s32 id
3269 ):
3270         Map(dout_client),
3271         scene::ISceneNode(parent, mgr, id),
3272         m_client(client),
3273         m_control(control),
3274         m_camera_position(0,0,0),
3275         m_camera_direction(0,0,1)
3276 {
3277         m_camera_mutex.Init();
3278         assert(m_camera_mutex.IsInitialized());
3279
3280         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3281                         BS*1000000,BS*1000000,BS*1000000);
3282 }
3283
3284 ClientMap::~ClientMap()
3285 {
3286         /*JMutexAutoLock lock(mesh_mutex);
3287
3288         if(mesh != NULL)
3289         {
3290                 mesh->drop();
3291                 mesh = NULL;
3292         }*/
3293 }
3294
3295 MapSector * ClientMap::emergeSector(v2s16 p2d)
3296 {
3297         DSTACK(__FUNCTION_NAME);
3298         // Check that it doesn't exist already
3299         try{
3300                 return getSectorNoGenerate(p2d);
3301         }
3302         catch(InvalidPositionException &e)
3303         {
3304         }
3305
3306         // Create a sector
3307         ClientMapSector *sector = new ClientMapSector(this, p2d);
3308
3309         {
3310                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3311                 m_sectors.insert(p2d, sector);
3312         }
3313
3314         return sector;
3315 }
3316
3317 #if 0
3318 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3319 {
3320         DSTACK(__FUNCTION_NAME);
3321         ClientMapSector *sector = NULL;
3322
3323         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3324
3325         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3326
3327         if(n != NULL)
3328         {
3329                 sector = (ClientMapSector*)n->getValue();
3330                 assert(sector->getId() == MAPSECTOR_CLIENT);
3331         }
3332         else
3333         {
3334                 sector = new ClientMapSector(this, p2d);
3335                 {
3336                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3337                         m_sectors.insert(p2d, sector);
3338                 }
3339         }
3340
3341         sector->deSerialize(is);
3342 }
3343 #endif
3344
3345 void ClientMap::OnRegisterSceneNode()
3346 {
3347         if(IsVisible)
3348         {
3349                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3350                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3351         }
3352
3353         ISceneNode::OnRegisterSceneNode();
3354 }
3355
3356 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3357 {
3358         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3359         DSTACK(__FUNCTION_NAME);
3360
3361         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3362
3363         /*
3364                 This is called two times per frame, reset on the non-transparent one
3365         */
3366         if(pass == scene::ESNRP_SOLID)
3367         {
3368                 m_last_drawn_sectors.clear();
3369         }
3370
3371         /*
3372                 Get time for measuring timeout.
3373
3374                 Measuring time is very useful for long delays when the
3375                 machine is swapping a lot.
3376         */
3377         int time1 = time(0);
3378
3379         //u32 daynight_ratio = m_client->getDayNightRatio();
3380
3381         m_camera_mutex.Lock();
3382         v3f camera_position = m_camera_position;
3383         v3f camera_direction = m_camera_direction;
3384         m_camera_mutex.Unlock();
3385
3386         /*
3387                 Get all blocks and draw all visible ones
3388         */
3389
3390         v3s16 cam_pos_nodes(
3391                         camera_position.X / BS,
3392                         camera_position.Y / BS,
3393                         camera_position.Z / BS);
3394
3395         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3396
3397         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3398         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3399
3400         // Take a fair amount as we will be dropping more out later
3401         v3s16 p_blocks_min(
3402                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3403                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3404                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3405         v3s16 p_blocks_max(
3406                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3407                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3408                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3409
3410         u32 vertex_count = 0;
3411
3412         // For limiting number of mesh updates per frame
3413         u32 mesh_update_count = 0;
3414
3415         u32 blocks_would_have_drawn = 0;
3416         u32 blocks_drawn = 0;
3417
3418         int timecheck_counter = 0;
3419         core::map<v2s16, MapSector*>::Iterator si;
3420         si = m_sectors.getIterator();
3421         for(; si.atEnd() == false; si++)
3422         {
3423                 {
3424                         timecheck_counter++;
3425                         if(timecheck_counter > 50)
3426                         {
3427                                 timecheck_counter = 0;
3428                                 int time2 = time(0);
3429                                 if(time2 > time1 + 4)
3430                                 {
3431                                         dstream<<"ClientMap::renderMap(): "
3432                                                 "Rendering takes ages, returning."
3433                                                 <<std::endl;
3434                                         return;
3435                                 }
3436                         }
3437                 }
3438
3439                 MapSector *sector = si.getNode()->getValue();
3440                 v2s16 sp = sector->getPos();
3441
3442                 if(m_control.range_all == false)
3443                 {
3444                         if(sp.X < p_blocks_min.X
3445                         || sp.X > p_blocks_max.X
3446                         || sp.Y < p_blocks_min.Z
3447                         || sp.Y > p_blocks_max.Z)
3448                                 continue;
3449                 }
3450
3451                 core::list< MapBlock * > sectorblocks;
3452                 sector->getBlocks(sectorblocks);
3453
3454                 /*
3455                         Draw blocks
3456                 */
3457
3458                 u32 sector_blocks_drawn = 0;
3459
3460                 core::list< MapBlock * >::Iterator i;
3461                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3462                 {
3463                         MapBlock *block = *i;
3464
3465                         /*
3466                                 Compare block position to camera position, skip
3467                                 if not seen on display
3468                         */
3469
3470                         float range = 100000 * BS;
3471                         if(m_control.range_all == false)
3472                                 range = m_control.wanted_range * BS;
3473
3474                         float d = 0.0;
3475                         if(isBlockInSight(block->getPos(), camera_position,
3476                                         camera_direction, range, &d) == false)
3477                         {
3478                                 continue;
3479                         }
3480
3481                         // Okay, this block will be drawn. Reset usage timer.
3482                         block->resetUsageTimer();
3483
3484                         // This is ugly (spherical distance limit?)
3485                         /*if(m_control.range_all == false &&
3486                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3487                                 continue;*/
3488
3489 #if 1
3490                         /*
3491                                 Update expired mesh (used for day/night change)
3492
3493                                 It doesn't work exactly like it should now with the
3494                                 tasked mesh update but whatever.
3495                         */
3496
3497                         bool mesh_expired = false;
3498
3499                         {
3500                                 JMutexAutoLock lock(block->mesh_mutex);
3501
3502                                 mesh_expired = block->getMeshExpired();
3503
3504                                 // Mesh has not been expired and there is no mesh:
3505                                 // block has no content
3506                                 if(block->mesh == NULL && mesh_expired == false)
3507                                         continue;
3508                         }
3509
3510                         f32 faraway = BS*50;
3511                         //f32 faraway = m_control.wanted_range * BS;
3512
3513                         /*
3514                                 This has to be done with the mesh_mutex unlocked
3515                         */
3516                         // Pretty random but this should work somewhat nicely
3517                         if(mesh_expired && (
3518                                         (mesh_update_count < 3
3519                                                 && (d < faraway || mesh_update_count < 2)
3520                                         )
3521                                         ||
3522                                         (m_control.range_all && mesh_update_count < 20)
3523                                 )
3524                         )
3525                         /*if(mesh_expired && mesh_update_count < 6
3526                                         && (d < faraway || mesh_update_count < 3))*/
3527                         {
3528                                 mesh_update_count++;
3529
3530                                 // Mesh has been expired: generate new mesh
3531                                 //block->updateMesh(daynight_ratio);
3532                                 m_client->addUpdateMeshTask(block->getPos());
3533
3534                                 mesh_expired = false;
3535                         }
3536
3537 #endif
3538                         /*
3539                                 Draw the faces of the block
3540                         */
3541                         {
3542                                 JMutexAutoLock lock(block->mesh_mutex);
3543
3544                                 scene::SMesh *mesh = block->mesh;
3545
3546                                 if(mesh == NULL)
3547                                         continue;
3548
3549                                 blocks_would_have_drawn++;
3550                                 if(blocks_drawn >= m_control.wanted_max_blocks
3551                                                 && m_control.range_all == false
3552                                                 && d > m_control.wanted_min_range * BS)
3553                                         continue;
3554
3555                                 blocks_drawn++;
3556                                 sector_blocks_drawn++;
3557
3558                                 u32 c = mesh->getMeshBufferCount();
3559
3560                                 for(u32 i=0; i<c; i++)
3561                                 {
3562                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3563                                         const video::SMaterial& material = buf->getMaterial();
3564                                         video::IMaterialRenderer* rnd =
3565                                                         driver->getMaterialRenderer(material.MaterialType);
3566                                         bool transparent = (rnd && rnd->isTransparent());
3567                                         // Render transparent on transparent pass and likewise.
3568                                         if(transparent == is_transparent_pass)
3569                                         {
3570                                                 /*
3571                                                         This *shouldn't* hurt too much because Irrlicht
3572                                                         doesn't change opengl textures if the old
3573                                                         material is set again.
3574                                                 */
3575                                                 driver->setMaterial(buf->getMaterial());
3576                                                 driver->drawMeshBuffer(buf);
3577                                                 vertex_count += buf->getVertexCount();
3578                                         }
3579                                 }
3580                         }
3581                 } // foreach sectorblocks
3582
3583                 if(sector_blocks_drawn != 0)
3584                 {
3585                         m_last_drawn_sectors[sp] = true;
3586                 }
3587         }
3588
3589         m_control.blocks_drawn = blocks_drawn;
3590         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3591
3592         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3593                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3594 }
3595
3596 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3597                 core::map<v3s16, MapBlock*> *affected_blocks)
3598 {
3599         bool changed = false;
3600         /*
3601                 Add it to all blocks touching it
3602         */
3603         v3s16 dirs[7] = {
3604                 v3s16(0,0,0), // this
3605                 v3s16(0,0,1), // back
3606                 v3s16(0,1,0), // top
3607                 v3s16(1,0,0), // right
3608                 v3s16(0,0,-1), // front
3609                 v3s16(0,-1,0), // bottom
3610                 v3s16(-1,0,0), // left
3611         };
3612         for(u16 i=0; i<7; i++)
3613         {
3614                 v3s16 p2 = p + dirs[i];
3615                 // Block position of neighbor (or requested) node
3616                 v3s16 blockpos = getNodeBlockPos(p2);
3617                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3618                 if(blockref == NULL)
3619                         continue;
3620                 // Relative position of requested node
3621                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3622                 if(blockref->setTempMod(relpos, mod))
3623                 {
3624                         changed = true;
3625                 }
3626         }
3627         if(changed && affected_blocks!=NULL)
3628         {
3629                 for(u16 i=0; i<7; i++)
3630                 {
3631                         v3s16 p2 = p + dirs[i];
3632                         // Block position of neighbor (or requested) node
3633                         v3s16 blockpos = getNodeBlockPos(p2);
3634                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3635                         if(blockref == NULL)
3636                                 continue;
3637                         affected_blocks->insert(blockpos, blockref);
3638                 }
3639         }
3640         return changed;
3641 }
3642
3643 bool ClientMap::clearTempMod(v3s16 p,
3644                 core::map<v3s16, MapBlock*> *affected_blocks)
3645 {
3646         bool changed = false;
3647         v3s16 dirs[7] = {
3648                 v3s16(0,0,0), // this
3649                 v3s16(0,0,1), // back
3650                 v3s16(0,1,0), // top
3651                 v3s16(1,0,0), // right
3652                 v3s16(0,0,-1), // front
3653                 v3s16(0,-1,0), // bottom
3654                 v3s16(-1,0,0), // left
3655         };
3656         for(u16 i=0; i<7; i++)
3657         {
3658                 v3s16 p2 = p + dirs[i];
3659                 // Block position of neighbor (or requested) node
3660                 v3s16 blockpos = getNodeBlockPos(p2);
3661                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3662                 if(blockref == NULL)
3663                         continue;
3664                 // Relative position of requested node
3665                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3666                 if(blockref->clearTempMod(relpos))
3667                 {
3668                         changed = true;
3669                 }
3670         }
3671         if(changed && affected_blocks!=NULL)
3672         {
3673                 for(u16 i=0; i<7; i++)
3674                 {
3675                         v3s16 p2 = p + dirs[i];
3676                         // Block position of neighbor (or requested) node
3677                         v3s16 blockpos = getNodeBlockPos(p2);
3678                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3679                         if(blockref == NULL)
3680                                 continue;
3681                         affected_blocks->insert(blockpos, blockref);
3682                 }
3683         }
3684         return changed;
3685 }
3686
3687 void ClientMap::expireMeshes(bool only_daynight_diffed)
3688 {
3689         TimeTaker timer("expireMeshes()");
3690
3691         core::map<v2s16, MapSector*>::Iterator si;
3692         si = m_sectors.getIterator();
3693         for(; si.atEnd() == false; si++)
3694         {
3695                 MapSector *sector = si.getNode()->getValue();
3696
3697                 core::list< MapBlock * > sectorblocks;
3698                 sector->getBlocks(sectorblocks);
3699
3700                 core::list< MapBlock * >::Iterator i;
3701                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3702                 {
3703                         MapBlock *block = *i;
3704
3705                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3706                         {
3707                                 continue;
3708                         }
3709
3710                         {
3711                                 JMutexAutoLock lock(block->mesh_mutex);
3712                                 if(block->mesh != NULL)
3713                                 {
3714                                         /*block->mesh->drop();
3715                                         block->mesh = NULL;*/
3716                                         block->setMeshExpired(true);
3717                                 }
3718                         }
3719                 }
3720         }
3721 }
3722
3723 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3724 {
3725         assert(mapType() == MAPTYPE_CLIENT);
3726
3727         try{
3728                 v3s16 p = blockpos + v3s16(0,0,0);
3729                 MapBlock *b = getBlockNoCreate(p);
3730                 b->updateMesh(daynight_ratio);
3731                 //b->setMeshExpired(true);
3732         }
3733         catch(InvalidPositionException &e){}
3734         // Leading edge
3735         try{
3736                 v3s16 p = blockpos + v3s16(-1,0,0);
3737                 MapBlock *b = getBlockNoCreate(p);
3738                 b->updateMesh(daynight_ratio);
3739                 //b->setMeshExpired(true);
3740         }
3741         catch(InvalidPositionException &e){}
3742         try{
3743                 v3s16 p = blockpos + v3s16(0,-1,0);
3744                 MapBlock *b = getBlockNoCreate(p);
3745                 b->updateMesh(daynight_ratio);
3746                 //b->setMeshExpired(true);
3747         }
3748         catch(InvalidPositionException &e){}
3749         try{
3750                 v3s16 p = blockpos + v3s16(0,0,-1);
3751                 MapBlock *b = getBlockNoCreate(p);
3752                 b->updateMesh(daynight_ratio);
3753                 //b->setMeshExpired(true);
3754         }
3755         catch(InvalidPositionException &e){}
3756 }
3757
3758 #if 0
3759 /*
3760         Update mesh of block in which the node is, and if the node is at the
3761         leading edge, update the appropriate leading blocks too.
3762 */
3763 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3764 {
3765         v3s16 dirs[4] = {
3766                 v3s16(0,0,0),
3767                 v3s16(-1,0,0),
3768                 v3s16(0,-1,0),
3769                 v3s16(0,0,-1),
3770         };
3771         v3s16 blockposes[4];
3772         for(u32 i=0; i<4; i++)
3773         {
3774                 v3s16 np = nodepos + dirs[i];
3775                 blockposes[i] = getNodeBlockPos(np);
3776                 // Don't update mesh of block if it has been done already
3777                 bool already_updated = false;
3778                 for(u32 j=0; j<i; j++)
3779                 {
3780                         if(blockposes[j] == blockposes[i])
3781                         {
3782                                 already_updated = true;
3783                                 break;
3784                         }
3785                 }
3786                 if(already_updated)
3787                         continue;
3788                 // Update mesh
3789                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3790                 b->updateMesh(daynight_ratio);
3791         }
3792 }
3793 #endif
3794
3795 void ClientMap::PrintInfo(std::ostream &out)
3796 {
3797         out<<"ClientMap: ";
3798 }
3799
3800 #endif // !SERVER
3801
3802 /*
3803         MapVoxelManipulator
3804 */
3805
3806 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3807 {
3808         m_map = map;
3809 }
3810
3811 MapVoxelManipulator::~MapVoxelManipulator()
3812 {
3813         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3814                         <<std::endl;*/
3815 }
3816
3817 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3818 {
3819         TimeTaker timer1("emerge", &emerge_time);
3820
3821         // Units of these are MapBlocks
3822         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3823         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3824
3825         VoxelArea block_area_nodes
3826                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3827
3828         addArea(block_area_nodes);
3829
3830         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3831         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3832         for(s32 x=p_min.X; x<=p_max.X; x++)
3833         {
3834                 v3s16 p(x,y,z);
3835                 core::map<v3s16, bool>::Node *n;
3836                 n = m_loaded_blocks.find(p);
3837                 if(n != NULL)
3838                         continue;
3839
3840                 bool block_data_inexistent = false;
3841                 try
3842                 {
3843                         TimeTaker timer1("emerge load", &emerge_load_time);
3844
3845                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3846                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3847                                         <<" wanted area: ";
3848                         a.print(dstream);
3849                         dstream<<std::endl;*/
3850
3851                         MapBlock *block = m_map->getBlockNoCreate(p);
3852                         if(block->isDummy())
3853                                 block_data_inexistent = true;
3854                         else
3855                                 block->copyTo(*this);
3856                 }
3857                 catch(InvalidPositionException &e)
3858                 {
3859                         block_data_inexistent = true;
3860                 }
3861
3862                 if(block_data_inexistent)
3863                 {
3864                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3865                         // Fill with VOXELFLAG_INEXISTENT
3866                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3867                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3868                         {
3869                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3870                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3871                         }
3872                 }
3873
3874                 m_loaded_blocks.insert(p, !block_data_inexistent);
3875         }
3876
3877         //dstream<<"emerge done"<<std::endl;
3878 }
3879
3880 /*
3881         SUGG: Add an option to only update eg. water and air nodes.
3882               This will make it interfere less with important stuff if
3883                   run on background.
3884 */
3885 void MapVoxelManipulator::blitBack
3886                 (core::map<v3s16, MapBlock*> & modified_blocks)
3887 {
3888         if(m_area.getExtent() == v3s16(0,0,0))
3889                 return;
3890
3891         //TimeTaker timer1("blitBack");
3892
3893         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3894                         <<m_loaded_blocks.size()<<std::endl;*/
3895
3896         /*
3897                 Initialize block cache
3898         */
3899         v3s16 blockpos_last;
3900         MapBlock *block = NULL;
3901         bool block_checked_in_modified = false;
3902
3903         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3904         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3905         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3906         {
3907                 v3s16 p(x,y,z);
3908
3909                 u8 f = m_flags[m_area.index(p)];
3910                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
3911                         continue;
3912
3913                 MapNode &n = m_data[m_area.index(p)];
3914
3915                 v3s16 blockpos = getNodeBlockPos(p);
3916
3917                 try
3918                 {
3919                         // Get block
3920                         if(block == NULL || blockpos != blockpos_last){
3921                                 block = m_map->getBlockNoCreate(blockpos);
3922                                 blockpos_last = blockpos;
3923                                 block_checked_in_modified = false;
3924                         }
3925
3926                         // Calculate relative position in block
3927                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
3928
3929                         // Don't continue if nothing has changed here
3930                         if(block->getNode(relpos) == n)
3931                                 continue;
3932
3933                         //m_map->setNode(m_area.MinEdge + p, n);
3934                         block->setNode(relpos, n);
3935
3936                         /*
3937                                 Make sure block is in modified_blocks
3938                         */
3939                         if(block_checked_in_modified == false)
3940                         {
3941                                 modified_blocks[blockpos] = block;
3942                                 block_checked_in_modified = true;
3943                         }
3944                 }
3945                 catch(InvalidPositionException &e)
3946                 {
3947                 }
3948         }
3949 }
3950
3951 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
3952                 MapVoxelManipulator(map),
3953                 m_create_area(false)
3954 {
3955 }
3956
3957 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
3958 {
3959 }
3960
3961 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3962 {
3963         // Just create the area so that it can be pointed to
3964         VoxelManipulator::emerge(a, caller_id);
3965 }
3966
3967 void ManualMapVoxelManipulator::initialEmerge(
3968                 v3s16 blockpos_min, v3s16 blockpos_max)
3969 {
3970         TimeTaker timer1("initialEmerge", &emerge_time);
3971
3972         // Units of these are MapBlocks
3973         v3s16 p_min = blockpos_min;
3974         v3s16 p_max = blockpos_max;
3975
3976         VoxelArea block_area_nodes
3977                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3978
3979         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
3980         if(size_MB >= 1)
3981         {
3982                 dstream<<"initialEmerge: area: ";
3983                 block_area_nodes.print(dstream);
3984                 dstream<<" ("<<size_MB<<"MB)";
3985                 dstream<<std::endl;
3986         }
3987
3988         addArea(block_area_nodes);
3989
3990         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3991         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3992         for(s32 x=p_min.X; x<=p_max.X; x++)
3993         {
3994                 v3s16 p(x,y,z);
3995                 core::map<v3s16, bool>::Node *n;
3996                 n = m_loaded_blocks.find(p);
3997                 if(n != NULL)
3998                         continue;
3999
4000                 bool block_data_inexistent = false;
4001                 try
4002                 {
4003                         TimeTaker timer1("emerge load", &emerge_load_time);
4004
4005                         MapBlock *block = m_map->getBlockNoCreate(p);
4006                         if(block->isDummy())
4007                                 block_data_inexistent = true;
4008                         else
4009                                 block->copyTo(*this);
4010                 }
4011                 catch(InvalidPositionException &e)
4012                 {
4013                         block_data_inexistent = true;
4014                 }
4015
4016                 if(block_data_inexistent)
4017                 {
4018                         /*
4019                                 Mark area inexistent
4020                         */
4021                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4022                         // Fill with VOXELFLAG_INEXISTENT
4023                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4024                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4025                         {
4026                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4027                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4028                         }
4029                 }
4030
4031                 m_loaded_blocks.insert(p, !block_data_inexistent);
4032         }
4033 }
4034
4035 void ManualMapVoxelManipulator::blitBackAll(
4036                 core::map<v3s16, MapBlock*> * modified_blocks)
4037 {
4038         if(m_area.getExtent() == v3s16(0,0,0))
4039                 return;
4040
4041         /*
4042                 Copy data of all blocks
4043         */
4044         for(core::map<v3s16, bool>::Iterator
4045                         i = m_loaded_blocks.getIterator();
4046                         i.atEnd() == false; i++)
4047         {
4048                 bool existed = i.getNode()->getValue();
4049                 if(existed == false)
4050                         continue;
4051                 v3s16 p = i.getNode()->getKey();
4052                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4053                 if(block == NULL)
4054                 {
4055                         dstream<<"WARNING: "<<__FUNCTION_NAME
4056                                         <<": got NULL block "
4057                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4058                                         <<std::endl;
4059                         continue;
4060                 }
4061
4062                 block->copyFrom(*this);
4063
4064                 if(modified_blocks)
4065                         modified_blocks->insert(p, block);
4066         }
4067 }
4068
4069 //END