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.getContent() == CONTENT_MUD)
 634                         {
 635                                 n.setContent(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).walkable == true)
 924         {
 925                 try{
 926                         MapNode bottomnode = getNode(bottompos);
 927
 928                         if(bottomnode.getContent() == CONTENT_GRASS
 929                                         || bottomnode.getContent() == CONTENT_GRASS_FOOTSTEPS)
 930                         {
 931                                 bottomnode.setContent(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.getContent() == CONTENT_MUD && node_under_sunlight)
 947         {
 948                 n.setContent(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).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).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).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.getContent()))
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         content_t 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.setContent(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.getContent()))
1264                 {
1265                         m_transforming_liquid.push_back(p2);
1266                 }
1267
1268                 }catch(InvalidPositionException &e)
1269                 {
1270                 }
1271         }
1272 }
1273
1274 bool Map::addNodeWithEvent(v3s16 p, MapNode n)
1275 {
1276         MapEditEvent event;
1277         event.type = MEET_ADDNODE;
1278         event.p = p;
1279         event.n = n;
1280
1281         bool succeeded = true;
1282         try{
1283                 core::map<v3s16, MapBlock*> modified_blocks;
1284                 addNodeAndUpdate(p, n, modified_blocks);
1285
1286                 // Copy modified_blocks to event
1287                 for(core::map<v3s16, MapBlock*>::Iterator
1288                                 i = modified_blocks.getIterator();
1289                                 i.atEnd()==false; i++)
1290                 {
1291                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1292                 }
1293         }
1294         catch(InvalidPositionException &e){
1295                 succeeded = false;
1296         }
1297
1298         dispatchEvent(&event);
1299
1300         return succeeded;
1301 }
1302
1303 bool Map::removeNodeWithEvent(v3s16 p)
1304 {
1305         MapEditEvent event;
1306         event.type = MEET_REMOVENODE;
1307         event.p = p;
1308
1309         bool succeeded = true;
1310         try{
1311                 core::map<v3s16, MapBlock*> modified_blocks;
1312                 removeNodeAndUpdate(p, modified_blocks);
1313
1314                 // Copy modified_blocks to event
1315                 for(core::map<v3s16, MapBlock*>::Iterator
1316                                 i = modified_blocks.getIterator();
1317                                 i.atEnd()==false; i++)
1318                 {
1319                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1320                 }
1321         }
1322         catch(InvalidPositionException &e){
1323                 succeeded = false;
1324         }
1325
1326         dispatchEvent(&event);
1327
1328         return succeeded;
1329 }
1330
1331 bool Map::dayNightDiffed(v3s16 blockpos)
1332 {
1333         try{
1334                 v3s16 p = blockpos + v3s16(0,0,0);
1335                 MapBlock *b = getBlockNoCreate(p);
1336                 if(b->dayNightDiffed())
1337                         return true;
1338         }
1339         catch(InvalidPositionException &e){}
1340         // Leading edges
1341         try{
1342                 v3s16 p = blockpos + v3s16(-1,0,0);
1343                 MapBlock *b = getBlockNoCreate(p);
1344                 if(b->dayNightDiffed())
1345                         return true;
1346         }
1347         catch(InvalidPositionException &e){}
1348         try{
1349                 v3s16 p = blockpos + v3s16(0,-1,0);
1350                 MapBlock *b = getBlockNoCreate(p);
1351                 if(b->dayNightDiffed())
1352                         return true;
1353         }
1354         catch(InvalidPositionException &e){}
1355         try{
1356                 v3s16 p = blockpos + v3s16(0,0,-1);
1357                 MapBlock *b = getBlockNoCreate(p);
1358                 if(b->dayNightDiffed())
1359                         return true;
1360         }
1361         catch(InvalidPositionException &e){}
1362         // Trailing edges
1363         try{
1364                 v3s16 p = blockpos + v3s16(1,0,0);
1365                 MapBlock *b = getBlockNoCreate(p);
1366                 if(b->dayNightDiffed())
1367                         return true;
1368         }
1369         catch(InvalidPositionException &e){}
1370         try{
1371                 v3s16 p = blockpos + v3s16(0,1,0);
1372                 MapBlock *b = getBlockNoCreate(p);
1373                 if(b->dayNightDiffed())
1374                         return true;
1375         }
1376         catch(InvalidPositionException &e){}
1377         try{
1378                 v3s16 p = blockpos + v3s16(0,0,1);
1379                 MapBlock *b = getBlockNoCreate(p);
1380                 if(b->dayNightDiffed())
1381                         return true;
1382         }
1383         catch(InvalidPositionException &e){}
1384
1385         return false;
1386 }
1387
1388 /*
1389         Updates usage timers
1390 */
1391 void Map::timerUpdate(float dtime, float unload_timeout,
1392                 core::list<v3s16> *unloaded_blocks)
1393 {
1394         bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
1395
1396         core::list<v2s16> sector_deletion_queue;
1397         u32 deleted_blocks_count = 0;
1398         u32 saved_blocks_count = 0;
1399
1400         core::map<v2s16, MapSector*>::Iterator si;
1401
1402         si = m_sectors.getIterator();
1403         for(; si.atEnd() == false; si++)
1404         {
1405                 MapSector *sector = si.getNode()->getValue();
1406
1407                 bool all_blocks_deleted = true;
1408
1409                 core::list<MapBlock*> blocks;
1410                 sector->getBlocks(blocks);
1411                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1412                                 i != blocks.end(); i++)
1413                 {
1414                         MapBlock *block = (*i);
1415
1416                         block->incrementUsageTimer(dtime);
1417
1418                         if(block->getUsageTimer() > unload_timeout)
1419                         {
1420                                 v3s16 p = block->getPos();
1421
1422                                 // Save if modified
1423                                 if(block->getModified() != MOD_STATE_CLEAN
1424                                                 && save_before_unloading)
1425                                 {
1426                                         saveBlock(block);
1427                                         saved_blocks_count++;
1428                                 }
1429
1430                                 // Delete from memory
1431                                 sector->deleteBlock(block);
1432
1433                                 if(unloaded_blocks)
1434                                         unloaded_blocks->push_back(p);
1435
1436                                 deleted_blocks_count++;
1437                         }
1438                         else
1439                         {
1440                                 all_blocks_deleted = false;
1441                         }
1442                 }
1443
1444                 if(all_blocks_deleted)
1445                 {
1446                         sector_deletion_queue.push_back(si.getNode()->getKey());
1447                 }
1448         }
1449
1450         // Finally delete the empty sectors
1451         deleteSectors(sector_deletion_queue);
1452
1453         if(deleted_blocks_count != 0)
1454         {
1455                 PrintInfo(dstream); // ServerMap/ClientMap:
1456                 dstream<<"Unloaded "<<deleted_blocks_count
1457                                 <<" blocks from memory";
1458                 if(save_before_unloading)
1459                         dstream<<", of which "<<saved_blocks_count<<" were written";
1460                 dstream<<"."<<std::endl;
1461         }
1462 }
1463
1464 void Map::deleteSectors(core::list<v2s16> &list)
1465 {
1466         core::list<v2s16>::Iterator j;
1467         for(j=list.begin(); j!=list.end(); j++)
1468         {
1469                 MapSector *sector = m_sectors[*j];
1470                 // If sector is in sector cache, remove it from there
1471                 if(m_sector_cache == sector)
1472                         m_sector_cache = NULL;
1473                 // Remove from map and delete
1474                 m_sectors.remove(*j);
1475                 delete sector;
1476         }
1477 }
1478
1479 #if 0
1480 void Map::unloadUnusedData(float timeout,
1481                 core::list<v3s16> *deleted_blocks)
1482 {
1483         core::list<v2s16> sector_deletion_queue;
1484         u32 deleted_blocks_count = 0;
1485         u32 saved_blocks_count = 0;
1486
1487         core::map<v2s16, MapSector*>::Iterator si = m_sectors.getIterator();
1488         for(; si.atEnd() == false; si++)
1489         {
1490                 MapSector *sector = si.getNode()->getValue();
1491
1492                 bool all_blocks_deleted = true;
1493
1494                 core::list<MapBlock*> blocks;
1495                 sector->getBlocks(blocks);
1496                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1497                                 i != blocks.end(); i++)
1498                 {
1499                         MapBlock *block = (*i);
1500
1501                         if(block->getUsageTimer() > timeout)
1502                         {
1503                                 // Save if modified
1504                                 if(block->getModified() != MOD_STATE_CLEAN)
1505                                 {
1506                                         saveBlock(block);
1507                                         saved_blocks_count++;
1508                                 }
1509                                 // Delete from memory
1510                                 sector->deleteBlock(block);
1511                                 deleted_blocks_count++;
1512                         }
1513                         else
1514                         {
1515                                 all_blocks_deleted = false;
1516                         }
1517                 }
1518
1519                 if(all_blocks_deleted)
1520                 {
1521                         sector_deletion_queue.push_back(si.getNode()->getKey());
1522                 }
1523         }
1524
1525         deleteSectors(sector_deletion_queue);
1526
1527         dstream<<"Map: Unloaded "<<deleted_blocks_count<<" blocks from memory"
1528                         <<", of which "<<saved_blocks_count<<" were wr."
1529                         <<std::endl;
1530
1531         //return sector_deletion_queue.getSize();
1532         //return deleted_blocks_count;
1533 }
1534 #endif
1535
1536 void Map::PrintInfo(std::ostream &out)
1537 {
1538         out<<"Map: ";
1539 }
1540
1541 #define WATER_DROP_BOOST 4
1542
1543 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
1544 {
1545         DSTACK(__FUNCTION_NAME);
1546         //TimeTaker timer("transformLiquids()");
1547
1548         u32 loopcount = 0;
1549         u32 initial_size = m_transforming_liquid.size();
1550
1551         /*if(initial_size != 0)
1552                 dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
1553
1554         while(m_transforming_liquid.size() != 0)
1555         {
1556                 /*
1557                         Get a queued transforming liquid node
1558                 */
1559                 v3s16 p0 = m_transforming_liquid.pop_front();
1560
1561                 MapNode n0 = getNodeNoEx(p0);
1562
1563                 // Don't deal with non-liquids
1564                 if(content_liquid(n0.getContent()) == false)
1565                         continue;
1566
1567                 bool is_source = !content_flowing_liquid(n0.getContent());
1568
1569                 u8 liquid_level = 8;
1570                 if(is_source == false)
1571                         liquid_level = n0.param2 & 0x0f;
1572
1573                 // Turn possible source into non-source
1574                 u8 nonsource_c = make_liquid_flowing(n0.getContent());
1575
1576                 /*
1577                         If not source, check that some node flows into this one
1578                         and what is the level of liquid in this one
1579                 */
1580                 if(is_source == false)
1581                 {
1582                         s8 new_liquid_level_max = -1;
1583
1584                         v3s16 dirs_from[5] = {
1585                                 v3s16(0,1,0), // top
1586                                 v3s16(0,0,1), // back
1587                                 v3s16(1,0,0), // right
1588                                 v3s16(0,0,-1), // front
1589                                 v3s16(-1,0,0), // left
1590                         };
1591                         for(u16 i=0; i<5; i++)
1592                         {
1593                                 bool from_top = (i==0);
1594
1595                                 v3s16 p2 = p0 + dirs_from[i];
1596                                 MapNode n2 = getNodeNoEx(p2);
1597
1598                                 if(content_liquid(n2.getContent()))
1599                                 {
1600                                         u8 n2_nonsource_c = make_liquid_flowing(n2.getContent());
1601                                         // Check that the liquids are the same type
1602                                         if(n2_nonsource_c != nonsource_c)
1603                                         {
1604                                                 dstream<<"WARNING: Not handling: different liquids"
1605                                                                 " collide"<<std::endl;
1606                                                 continue;
1607                                         }
1608                                         bool n2_is_source = !content_flowing_liquid(n2.getContent());
1609                                         s8 n2_liquid_level = 8;
1610                                         if(n2_is_source == false)
1611                                                 n2_liquid_level = n2.param2 & 0x07;
1612
1613                                         s8 new_liquid_level = -1;
1614                                         if(from_top)
1615                                         {
1616                                                 //new_liquid_level = 7;
1617                                                 if(n2_liquid_level >= 7 - WATER_DROP_BOOST)
1618                                                         new_liquid_level = 7;
1619                                                 else
1620                                                         new_liquid_level = n2_liquid_level + WATER_DROP_BOOST;
1621                                         }
1622                                         else if(n2_liquid_level > 0)
1623                                         {
1624                                                 new_liquid_level = n2_liquid_level - 1;
1625                                         }
1626
1627                                         if(new_liquid_level > new_liquid_level_max)
1628                                                 new_liquid_level_max = new_liquid_level;
1629                                 }
1630                         } //for
1631
1632                         /*
1633                                 If liquid level should be something else, update it and
1634                                 add all the neighboring water nodes to the transform queue.
1635                         */
1636                         if(new_liquid_level_max != liquid_level)
1637                         {
1638                                 if(new_liquid_level_max == -1)
1639                                 {
1640                                         // Remove water alltoghether
1641                                         n0.setContent(CONTENT_AIR);
1642                                         n0.param2 = 0;
1643                                         setNode(p0, n0);
1644                                 }
1645                                 else
1646                                 {
1647                                         n0.param2 = new_liquid_level_max;
1648                                         setNode(p0, n0);
1649                                 }
1650
1651                                 // Block has been modified
1652                                 {
1653                                         v3s16 blockpos = getNodeBlockPos(p0);
1654                                         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1655                                         if(block != NULL)
1656                                                 modified_blocks.insert(blockpos, block);
1657                                 }
1658
1659                                 /*
1660                                         Add neighboring non-source liquid nodes to transform queue.
1661                                 */
1662                                 v3s16 dirs[6] = {
1663                                         v3s16(0,0,1), // back
1664                                         v3s16(0,1,0), // top
1665                                         v3s16(1,0,0), // right
1666                                         v3s16(0,0,-1), // front
1667                                         v3s16(0,-1,0), // bottom
1668                                         v3s16(-1,0,0), // left
1669                                 };
1670                                 for(u16 i=0; i<6; i++)
1671                                 {
1672                                         v3s16 p2 = p0 + dirs[i];
1673
1674                                         MapNode n2 = getNodeNoEx(p2);
1675                                         if(content_flowing_liquid(n2.getContent()))
1676                                         {
1677                                                 m_transforming_liquid.push_back(p2);
1678                                         }
1679                                 }
1680                         }
1681                 }
1682
1683                 // Get a new one from queue if the node has turned into non-water
1684                 if(content_liquid(n0.getContent()) == false)
1685                         continue;
1686
1687                 /*
1688                         Flow water from this node
1689                 */
1690                 v3s16 dirs_to[5] = {
1691                         v3s16(0,-1,0), // bottom
1692                         v3s16(0,0,1), // back
1693                         v3s16(1,0,0), // right
1694                         v3s16(0,0,-1), // front
1695                         v3s16(-1,0,0), // left
1696                 };
1697                 for(u16 i=0; i<5; i++)
1698                 {
1699                         bool to_bottom = (i == 0);
1700
1701                         // If liquid is at lowest possible height, it's not going
1702                         // anywhere except down
1703                         if(liquid_level == 0 && to_bottom == false)
1704                                 continue;
1705
1706                         u8 liquid_next_level = 0;
1707                         // If going to bottom
1708                         if(to_bottom)
1709                         {
1710                                 //liquid_next_level = 7;
1711                                 if(liquid_level >= 7 - WATER_DROP_BOOST)
1712                                         liquid_next_level = 7;
1713                                 else
1714                                         liquid_next_level = liquid_level + WATER_DROP_BOOST;
1715                         }
1716                         else
1717                                 liquid_next_level = liquid_level - 1;
1718
1719                         bool n2_changed = false;
1720                         bool flowed = false;
1721
1722                         v3s16 p2 = p0 + dirs_to[i];
1723
1724                         MapNode n2 = getNodeNoEx(p2);
1725                         //dstream<<"[1] n2.param="<<(int)n2.param<<std::endl;
1726
1727                         if(content_liquid(n2.getContent()))
1728                         {
1729                                 u8 n2_nonsource_c = make_liquid_flowing(n2.getContent());
1730                                 // Check that the liquids are the same type
1731                                 if(n2_nonsource_c != nonsource_c)
1732                                 {
1733                                         dstream<<"WARNING: Not handling: different liquids"
1734                                                         " collide"<<std::endl;
1735                                         continue;
1736                                 }
1737                                 bool n2_is_source = !content_flowing_liquid(n2.getContent());
1738                                 u8 n2_liquid_level = 8;
1739                                 if(n2_is_source == false)
1740                                         n2_liquid_level = n2.param2 & 0x07;
1741
1742                                 if(to_bottom)
1743                                 {
1744                                         flowed = true;
1745                                 }
1746
1747                                 if(n2_is_source)
1748                                 {
1749                                         // Just flow into the source, nothing changes.
1750                                         // n2_changed is not set because destination didn't change
1751                                         flowed = true;
1752                                 }
1753                                 else
1754                                 {
1755                                         if(liquid_next_level > liquid_level)
1756                                         {
1757                                                 n2.param2 = liquid_next_level;
1758                                                 setNode(p2, n2);
1759
1760                                                 n2_changed = true;
1761                                                 flowed = true;
1762                                         }
1763                                 }
1764                         }
1765                         else if(n2.getContent() == CONTENT_AIR)
1766                         {
1767                                 n2.setContent(nonsource_c);
1768                                 n2.param2 = liquid_next_level;
1769                                 setNode(p2, n2);
1770
1771                                 n2_changed = true;
1772                                 flowed = true;
1773                         }
1774
1775                         //dstream<<"[2] n2.param="<<(int)n2.param<<std::endl;
1776
1777                         if(n2_changed)
1778                         {
1779                                 m_transforming_liquid.push_back(p2);
1780
1781                                 v3s16 blockpos = getNodeBlockPos(p2);
1782                                 MapBlock *block = getBlockNoCreateNoEx(blockpos);
1783                                 if(block != NULL)
1784                                         modified_blocks.insert(blockpos, block);
1785                         }
1786
1787                         // If n2_changed to bottom, don't flow anywhere else
1788                         if(to_bottom && flowed && !is_source)
1789                                 break;
1790                 }
1791
1792                 loopcount++;
1793                 //if(loopcount >= 100000)
1794                 if(loopcount >= initial_size * 1)
1795                         break;
1796         }
1797         //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
1798 }
1799
1800 NodeMetadata* Map::getNodeMetadata(v3s16 p)
1801 {
1802         v3s16 blockpos = getNodeBlockPos(p);
1803         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1804         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1805         if(block == NULL)
1806         {
1807                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1808                                 <<std::endl;
1809                 return NULL;
1810         }
1811         NodeMetadata *meta = block->m_node_metadata.get(p_rel);
1812         return meta;
1813 }
1814
1815 void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
1816 {
1817         v3s16 blockpos = getNodeBlockPos(p);
1818         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1819         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1820         if(block == NULL)
1821         {
1822                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1823                                 <<std::endl;
1824                 return;
1825         }
1826         block->m_node_metadata.set(p_rel, meta);
1827 }
1828
1829 void Map::removeNodeMetadata(v3s16 p)
1830 {
1831         v3s16 blockpos = getNodeBlockPos(p);
1832         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1833         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1834         if(block == NULL)
1835         {
1836                 dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
1837                                 <<std::endl;
1838                 return;
1839         }
1840         block->m_node_metadata.remove(p_rel);
1841 }
1842
1843 void Map::nodeMetadataStep(float dtime,
1844                 core::map<v3s16, MapBlock*> &changed_blocks)
1845 {
1846         /*
1847                 NOTE:
1848                 Currently there is no way to ensure that all the necessary
1849                 blocks are loaded when this is run. (They might get unloaded)
1850                 NOTE: ^- Actually, that might not be so. In a quick test it
1851                 reloaded a block with a furnace when I walked back to it from
1852                 a distance.
1853         */
1854         core::map<v2s16, MapSector*>::Iterator si;
1855         si = m_sectors.getIterator();
1856         for(; si.atEnd() == false; si++)
1857         {
1858                 MapSector *sector = si.getNode()->getValue();
1859                 core::list< MapBlock * > sectorblocks;
1860                 sector->getBlocks(sectorblocks);
1861                 core::list< MapBlock * >::Iterator i;
1862                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
1863                 {
1864                         MapBlock *block = *i;
1865                         bool changed = block->m_node_metadata.step(dtime);
1866                         if(changed)
1867                                 changed_blocks[block->getPos()] = block;
1868                 }
1869         }
1870 }
1871
1872 /*
1873         ServerMap
1874 */
1875
1876 ServerMap::ServerMap(std::string savedir):
1877         Map(dout_server),
1878         m_seed(0),
1879         m_map_metadata_changed(true)
1880 {
1881         dstream<<__FUNCTION_NAME<<std::endl;
1882
1883         //m_chunksize = 8; // Takes a few seconds
1884
1885         m_seed = (((u64)(myrand()%0xffff)<<0)
1886                         + ((u64)(myrand()%0xffff)<<16)
1887                         + ((u64)(myrand()%0xffff)<<32)
1888                         + ((u64)(myrand()%0xffff)<<48));
1889
1890         /*
1891                 Experimental and debug stuff
1892         */
1893
1894         {
1895         }
1896
1897         /*
1898                 Try to load map; if not found, create a new one.
1899         */
1900
1901         m_savedir = savedir;
1902         m_map_saving_enabled = false;
1903
1904         try
1905         {
1906                 // If directory exists, check contents and load if possible
1907                 if(fs::PathExists(m_savedir))
1908                 {
1909                         // If directory is empty, it is safe to save into it.
1910                         if(fs::GetDirListing(m_savedir).size() == 0)
1911                         {
1912                                 dstream<<DTIME<<"Server: Empty save directory is valid."
1913                                                 <<std::endl;
1914                                 m_map_saving_enabled = true;
1915                         }
1916                         else
1917                         {
1918                                 try{
1919                                         // Load map metadata (seed, chunksize)
1920                                         loadMapMeta();
1921                                 }
1922                                 catch(FileNotGoodException &e){
1923                                         dstream<<DTIME<<"WARNING: Could not load map metadata"
1924                                                         //<<" Disabling chunk-based generator."
1925                                                         <<std::endl;
1926                                         //m_chunksize = 0;
1927                                 }
1928
1929                                 /*try{
1930                                         // Load chunk metadata
1931                                         loadChunkMeta();
1932                                 }
1933                                 catch(FileNotGoodException &e){
1934                                         dstream<<DTIME<<"WARNING: Could not load chunk metadata."
1935                                                         <<" Disabling chunk-based generator."
1936                                                         <<std::endl;
1937                                         m_chunksize = 0;
1938                                 }*/
1939
1940                                 /*dstream<<DTIME<<"Server: Successfully loaded chunk "
1941                                                 "metadata and sector (0,0) from "<<savedir<<
1942                                                 ", assuming valid save directory."
1943                                                 <<std::endl;*/
1944
1945                                 dstream<<DTIME<<"INFO: Server: Successfully loaded map "
1946                                                 <<"and chunk metadata from "<<savedir
1947                                                 <<", assuming valid save directory."
1948                                                 <<std::endl;
1949
1950                                 m_map_saving_enabled = true;
1951                                 // Map loaded, not creating new one
1952                                 return;
1953                         }
1954                 }
1955                 // If directory doesn't exist, it is safe to save to it
1956                 else{
1957                         m_map_saving_enabled = true;
1958                 }
1959         }
1960         catch(std::exception &e)
1961         {
1962                 dstream<<DTIME<<"WARNING: Server: Failed to load map from "<<savedir
1963                                 <<", exception: "<<e.what()<<std::endl;
1964                 dstream<<"Please remove the map or fix it."<<std::endl;
1965                 dstream<<"WARNING: Map saving will be disabled."<<std::endl;
1966         }
1967
1968         dstream<<DTIME<<"INFO: Initializing new map."<<std::endl;
1969
1970         // Create zero sector
1971         emergeSector(v2s16(0,0));
1972
1973         // Initially write whole map
1974         save(false);
1975 }
1976
1977 ServerMap::~ServerMap()
1978 {
1979         dstream<<__FUNCTION_NAME<<std::endl;
1980
1981         try
1982         {
1983                 if(m_map_saving_enabled)
1984                 {
1985                         // Save only changed parts
1986                         save(true);
1987                         dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
1988                 }
1989                 else
1990                 {
1991                         dstream<<DTIME<<"Server: map not saved"<<std::endl;
1992                 }
1993         }
1994         catch(std::exception &e)
1995         {
1996                 dstream<<DTIME<<"Server: Failed to save map to "<<m_savedir
1997                                 <<", exception: "<<e.what()<<std::endl;
1998         }
1999
2000 #if 0
2001         /*
2002                 Free all MapChunks
2003         */
2004         core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
2005         for(; i.atEnd() == false; i++)
2006         {
2007                 MapChunk *chunk = i.getNode()->getValue();
2008                 delete chunk;
2009         }
2010 #endif
2011 }
2012
2013 void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
2014 {
2015         dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2016                         <<blockpos.Z<<")"<<std::endl;
2017
2018         // Do nothing if not inside limits (+-1 because of neighbors)
2019         if(blockpos_over_limit(blockpos - v3s16(1,1,1)) ||
2020                 blockpos_over_limit(blockpos + v3s16(1,1,1)))
2021         {
2022                 data->no_op = true;
2023                 return;
2024         }
2025
2026         data->no_op = false;
2027         data->seed = m_seed;
2028         data->blockpos = blockpos;
2029
2030         /*
2031                 Create the whole area of this and the neighboring blocks
2032         */
2033         {
2034                 //TimeTaker timer("initBlockMake() create area");
2035
2036                 for(s16 x=-1; x<=1; x++)
2037                 for(s16 z=-1; z<=1; z++)
2038                 {
2039                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2040                         // Sector metadata is loaded from disk if not already loaded.
2041                         ServerMapSector *sector = createSector(sectorpos);
2042                         assert(sector);
2043
2044                         for(s16 y=-1; y<=1; y++)
2045                         {
2046                                 v3s16 p(blockpos.X+x, blockpos.Y+y, blockpos.Z+z);
2047                                 //MapBlock *block = createBlock(p);
2048                                 // 1) get from memory, 2) load from disk
2049                                 MapBlock *block = emergeBlock(p, false);
2050                                 // 3) create a blank one
2051                                 if(block == NULL)
2052                                 {
2053                                         block = createBlock(p);
2054
2055                                         /*
2056                                                 Block gets sunlight if this is true.
2057
2058                                                 Refer to the map generator heuristics.
2059                                         */
2060                                         bool ug = mapgen::block_is_underground(data->seed, p);
2061                                         block->setIsUnderground(ug);
2062                                 }
2063
2064                                 // Lighting will not be valid after make_chunk is called
2065                                 block->setLightingExpired(true);
2066                                 // Lighting will be calculated
2067                                 //block->setLightingExpired(false);
2068                         }
2069                 }
2070         }
2071
2072         /*
2073                 Now we have a big empty area.
2074
2075                 Make a ManualMapVoxelManipulator that contains this and the
2076                 neighboring blocks
2077         */
2078
2079         // The area that contains this block and it's neighbors
2080         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2081         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2082
2083         data->vmanip = new ManualMapVoxelManipulator(this);
2084         //data->vmanip->setMap(this);
2085
2086         // Add the area
2087         {
2088                 //TimeTaker timer("initBlockMake() initialEmerge");
2089                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2090         }
2091
2092         // Data is ready now.
2093 }
2094
2095 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2096                 core::map<v3s16, MapBlock*> &changed_blocks)
2097 {
2098         v3s16 blockpos = data->blockpos;
2099         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2100                         <<blockpos.Z<<")"<<std::endl;*/
2101
2102         if(data->no_op)
2103         {
2104                 //dstream<<"finishBlockMake(): no-op"<<std::endl;
2105                 return NULL;
2106         }
2107
2108         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2109
2110         /*dstream<<"Resulting vmanip:"<<std::endl;
2111         data->vmanip.print(dstream);*/
2112
2113         /*
2114                 Blit generated stuff to map
2115                 NOTE: blitBackAll adds nearly everything to changed_blocks
2116         */
2117         {
2118                 // 70ms @cs=8
2119                 //TimeTaker timer("finishBlockMake() blitBackAll");
2120                 data->vmanip->blitBackAll(&changed_blocks);
2121         }
2122
2123         if(enable_mapgen_debug_info)
2124                 dstream<<"finishBlockMake: changed_blocks.size()="
2125                                 <<changed_blocks.size()<<std::endl;
2126
2127         /*
2128                 Copy transforming liquid information
2129         */
2130         while(data->transforming_liquid.size() > 0)
2131         {
2132                 v3s16 p = data->transforming_liquid.pop_front();
2133                 m_transforming_liquid.push_back(p);
2134         }
2135
2136         /*
2137                 Get central block
2138         */
2139         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2140         assert(block);
2141
2142         /*
2143                 Set is_underground flag for lighting with sunlight.
2144
2145                 Refer to map generator heuristics.
2146
2147                 NOTE: This is done in initChunkMake
2148         */
2149         //block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2150
2151
2152         /*
2153                 Add sunlight to central block.
2154                 This makes in-dark-spawning monsters to not flood the whole thing.
2155                 Do not spread the light, though.
2156         */
2157         /*core::map<v3s16, bool> light_sources;
2158         bool black_air_left = false;
2159         block->propagateSunlight(light_sources, true, &black_air_left);*/
2160
2161         /*
2162                 NOTE: Lighting and object adding shouldn't really be here, but
2163                 lighting is a bit tricky to move properly to makeBlock.
2164                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2165                       - There needs to be some way for makeBlock to report back if
2166                             the lighting update is going further down because of the
2167                                 new block blocking light
2168         */
2169
2170         /*
2171                 Update lighting
2172                 NOTE: This takes ~60ms, TODO: Investigate why
2173         */
2174         {
2175                 TimeTaker t("finishBlockMake lighting update");
2176
2177                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2178 #if 1
2179                 // Center block
2180                 lighting_update_blocks.insert(block->getPos(), block);
2181
2182                 /*{
2183                         s16 x = 0;
2184                         s16 z = 0;
2185                         v3s16 p = block->getPos()+v3s16(x,1,z);
2186                         lighting_update_blocks[p] = getBlockNoCreateNoEx(p);
2187                 }*/
2188 #endif
2189 #if 0
2190                 // All modified blocks
2191                 // NOTE: Should this be done? If this is not done, then the lighting
2192                 // of the others will be updated in a different place, one by one, i
2193                 // think... or they might not? Well, at least they are left marked as
2194                 // "lighting expired"; it seems that is not handled at all anywhere,
2195                 // so enabling this will slow it down A LOT because otherwise it
2196                 // would not do this at all. This causes the black trees.
2197                 for(core::map<v3s16, MapBlock*>::Iterator
2198                                 i = changed_blocks.getIterator();
2199                                 i.atEnd() == false; i++)
2200                 {
2201                         lighting_update_blocks.insert(i.getNode()->getKey(),
2202                                         i.getNode()->getValue());
2203                 }
2204                 /*// Also force-add all the upmost blocks for proper sunlight
2205                 for(s16 x=-1; x<=1; x++)
2206                 for(s16 z=-1; z<=1; z++)
2207                 {
2208                         v3s16 p = block->getPos()+v3s16(x,1,z);
2209                         lighting_update_blocks[p] = getBlockNoCreateNoEx(p);
2210                 }*/
2211 #endif
2212                 updateLighting(lighting_update_blocks, changed_blocks);
2213
2214                 /*
2215                         Set lighting to non-expired state in all of them.
2216                         This is cheating, but it is not fast enough if all of them
2217                         would actually be updated.
2218                 */
2219                 for(s16 x=-1; x<=1; x++)
2220                 for(s16 y=-1; y<=1; y++)
2221                 for(s16 z=-1; z<=1; z++)
2222                 {
2223                         v3s16 p = block->getPos()+v3s16(x,y,z);
2224                         getBlockNoCreateNoEx(p)->setLightingExpired(false);
2225                 }
2226
2227                 if(enable_mapgen_debug_info == false)
2228                         t.stop(true); // Hide output
2229         }
2230
2231         /*
2232                 Add random objects to block
2233         */
2234         mapgen::add_random_objects(block);
2235
2236         /*
2237                 Go through changed blocks
2238         */
2239         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2240                         i.atEnd() == false; i++)
2241         {
2242                 MapBlock *block = i.getNode()->getValue();
2243                 assert(block);
2244                 /*
2245                         Update day/night difference cache of the MapBlocks
2246                 */
2247                 block->updateDayNightDiff();
2248                 /*
2249                         Set block as modified
2250                 */
2251                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2252         }
2253
2254         /*
2255                 Set central block as generated
2256         */
2257         block->setGenerated(true);
2258
2259         /*
2260                 Save changed parts of map
2261                 NOTE: Will be saved later.
2262         */
2263         //save(true);
2264
2265         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2266                         <<blockpos.Z<<")"<<std::endl;*/
2267
2268         return block;
2269 }
2270
2271 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2272 {
2273         DSTACKF("%s: p2d=(%d,%d)",
2274                         __FUNCTION_NAME,
2275                         p2d.X, p2d.Y);
2276
2277         /*
2278                 Check if it exists already in memory
2279         */
2280         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2281         if(sector != NULL)
2282                 return sector;
2283
2284         /*
2285                 Try to load it from disk (with blocks)
2286         */
2287         //if(loadSectorFull(p2d) == true)
2288
2289         /*
2290                 Try to load metadata from disk
2291         */
2292         if(loadSectorMeta(p2d) == true)
2293         {
2294                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2295                 if(sector == NULL)
2296                 {
2297                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2298                         throw InvalidPositionException("");
2299                 }
2300                 return sector;
2301         }
2302
2303         /*
2304                 Do not create over-limit
2305         */
2306         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2307         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2308         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2309         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2310                 throw InvalidPositionException("createSector(): pos. over limit");
2311
2312         /*
2313                 Generate blank sector
2314         */
2315
2316         sector = new ServerMapSector(this, p2d);
2317
2318         // Sector position on map in nodes
2319         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2320
2321         /*
2322                 Insert to container
2323         */
2324         m_sectors.insert(p2d, sector);
2325
2326         return sector;
2327 }
2328
2329 /*
2330         This is a quick-hand function for calling makeBlock().
2331 */
2332 MapBlock * ServerMap::generateBlock(
2333                 v3s16 p,
2334                 core::map<v3s16, MapBlock*> &modified_blocks
2335 )
2336 {
2337         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2338
2339         /*dstream<<"generateBlock(): "
2340                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2341                         <<std::endl;*/
2342
2343         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2344
2345         TimeTaker timer("generateBlock");
2346
2347         //MapBlock *block = original_dummy;
2348
2349         v2s16 p2d(p.X, p.Z);
2350         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2351
2352         /*
2353                 Do not generate over-limit
2354         */
2355         if(blockpos_over_limit(p))
2356         {
2357                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2358                 throw InvalidPositionException("generateBlock(): pos. over limit");
2359         }
2360
2361         /*
2362                 Create block make data
2363         */
2364         mapgen::BlockMakeData data;
2365         initBlockMake(&data, p);
2366
2367         /*
2368                 Generate block
2369         */
2370         {
2371                 TimeTaker t("mapgen::make_block()");
2372                 mapgen::make_block(&data);
2373
2374                 if(enable_mapgen_debug_info == false)
2375                         t.stop(true); // Hide output
2376         }
2377
2378         /*
2379                 Blit data back on map, update lighting, add mobs and whatever this does
2380         */
2381         finishBlockMake(&data, modified_blocks);
2382
2383         /*
2384                 Get central block
2385         */
2386         MapBlock *block = getBlockNoCreateNoEx(p);
2387
2388 #if 0
2389         /*
2390                 Check result
2391         */
2392         if(block)
2393         {
2394                 bool erroneus_content = false;
2395                 for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2396                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2397                 for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2398                 {
2399                         v3s16 p(x0,y0,z0);
2400                         MapNode n = block->getNode(p);
2401                         if(n.getContent() == CONTENT_IGNORE)
2402                         {
2403                                 dstream<<"CONTENT_IGNORE at "
2404                                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2405                                                 <<std::endl;
2406                                 erroneus_content = true;
2407                                 assert(0);
2408                         }
2409                 }
2410                 if(erroneus_content)
2411                 {
2412                         assert(0);
2413                 }
2414         }
2415 #endif
2416
2417 #if 0
2418         /*
2419                 Generate a completely empty block
2420         */
2421         if(block)
2422         {
2423                 for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2424                 for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2425                 {
2426                         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2427                         {
2428                                 MapNode n;
2429                                 if(y0%2==0)
2430                                         n.setContent(CONTENT_AIR);
2431                                 else
2432                                         n.setContent(CONTENT_STONE);
2433                                 block->setNode(v3s16(x0,y0,z0), n);
2434                         }
2435                 }
2436         }
2437 #endif
2438
2439         if(enable_mapgen_debug_info == false)
2440                 timer.stop(true); // Hide output
2441
2442         return block;
2443 }
2444
2445 MapBlock * ServerMap::createBlock(v3s16 p)
2446 {
2447         DSTACKF("%s: p=(%d,%d,%d)",
2448                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2449
2450         /*
2451                 Do not create over-limit
2452         */
2453         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2454         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2455         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2456         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2457         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2458         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2459                 throw InvalidPositionException("createBlock(): pos. over limit");
2460
2461         v2s16 p2d(p.X, p.Z);
2462         s16 block_y = p.Y;
2463         /*
2464                 This will create or load a sector if not found in memory.
2465                 If block exists on disk, it will be loaded.
2466
2467                 NOTE: On old save formats, this will be slow, as it generates
2468                       lighting on blocks for them.
2469         */
2470         ServerMapSector *sector;
2471         try{
2472                 sector = (ServerMapSector*)createSector(p2d);
2473                 assert(sector->getId() == MAPSECTOR_SERVER);
2474         }
2475         catch(InvalidPositionException &e)
2476         {
2477                 dstream<<"createBlock: createSector() failed"<<std::endl;
2478                 throw e;
2479         }
2480         /*
2481                 NOTE: This should not be done, or at least the exception
2482                 should not be passed on as std::exception, because it
2483                 won't be catched at all.
2484         */
2485         /*catch(std::exception &e)
2486         {
2487                 dstream<<"createBlock: createSector() failed: "
2488                                 <<e.what()<<std::endl;
2489                 throw e;
2490         }*/
2491
2492         /*
2493                 Try to get a block from the sector
2494         */
2495
2496         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2497         if(block)
2498         {
2499                 if(block->isDummy())
2500                         block->unDummify();
2501                 return block;
2502         }
2503         // Create blank
2504         block = sector->createBlankBlock(block_y);
2505         return block;
2506 }
2507
2508 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2509 {
2510         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2511                         __FUNCTION_NAME,
2512                         p.X, p.Y, p.Z, allow_generate);
2513
2514         {
2515                 MapBlock *block = getBlockNoCreateNoEx(p);
2516                 if(block && block->isDummy() == false)
2517                         return block;
2518         }
2519
2520         {
2521                 MapBlock *block = loadBlock(p);
2522                 if(block)
2523                         return block;
2524         }
2525
2526         if(allow_generate)
2527         {
2528                 core::map<v3s16, MapBlock*> modified_blocks;
2529                 MapBlock *block = generateBlock(p, modified_blocks);
2530                 if(block)
2531                 {
2532                         MapEditEvent event;
2533                         event.type = MEET_OTHER;
2534                         event.p = p;
2535
2536                         // Copy modified_blocks to event
2537                         for(core::map<v3s16, MapBlock*>::Iterator
2538                                         i = modified_blocks.getIterator();
2539                                         i.atEnd()==false; i++)
2540                         {
2541                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2542                         }
2543
2544                         // Queue event
2545                         dispatchEvent(&event);
2546
2547                         return block;
2548                 }
2549         }
2550
2551         return NULL;
2552 }
2553
2554 #if 0
2555         /*
2556                 Do not generate over-limit
2557         */
2558         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2559         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2560         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2561         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2562         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2563         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2564                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2565
2566         v2s16 p2d(p.X, p.Z);
2567         s16 block_y = p.Y;
2568         /*
2569                 This will create or load a sector if not found in memory.
2570                 If block exists on disk, it will be loaded.
2571         */
2572         ServerMapSector *sector;
2573         try{
2574                 sector = createSector(p2d);
2575                 //sector = emergeSector(p2d, changed_blocks);
2576         }
2577         catch(InvalidPositionException &e)
2578         {
2579                 dstream<<"emergeBlock: createSector() failed: "
2580                                 <<e.what()<<std::endl;
2581                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2582                                 <<std::endl
2583                                 <<"You could try to delete it."<<std::endl;
2584                 throw e;
2585         }
2586         catch(VersionMismatchException &e)
2587         {
2588                 dstream<<"emergeBlock: createSector() failed: "
2589                                 <<e.what()<<std::endl;
2590                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2591                                 <<std::endl
2592                                 <<"You could try to delete it."<<std::endl;
2593                 throw e;
2594         }
2595
2596         /*
2597                 Try to get a block from the sector
2598         */
2599
2600         bool does_not_exist = false;
2601         bool lighting_expired = false;
2602         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2603
2604         // If not found, try loading from disk
2605         if(block == NULL)
2606         {
2607                 block = loadBlock(p);
2608         }
2609
2610         // Handle result
2611         if(block == NULL)
2612         {
2613                 does_not_exist = true;
2614         }
2615         else if(block->isDummy() == true)
2616         {
2617                 does_not_exist = true;
2618         }
2619         else if(block->getLightingExpired())
2620         {
2621                 lighting_expired = true;
2622         }
2623         else
2624         {
2625                 // Valid block
2626                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2627                 return block;
2628         }
2629
2630         /*
2631                 If block was not found on disk and not going to generate a
2632                 new one, make sure there is a dummy block in place.
2633         */
2634         if(only_from_disk && (does_not_exist || lighting_expired))
2635         {
2636                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2637
2638                 if(block == NULL)
2639                 {
2640                         // Create dummy block
2641                         block = new MapBlock(this, p, true);
2642
2643                         // Add block to sector
2644                         sector->insertBlock(block);
2645                 }
2646                 // Done.
2647                 return block;
2648         }
2649
2650         //dstream<<"Not found on disk, generating."<<std::endl;
2651         // 0ms
2652         //TimeTaker("emergeBlock() generate");
2653
2654         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2655
2656         /*
2657                 If the block doesn't exist, generate the block.
2658         */
2659         if(does_not_exist)
2660         {
2661                 block = generateBlock(p, block, sector, changed_blocks,
2662                                 lighting_invalidated_blocks);
2663         }
2664
2665         if(lighting_expired)
2666         {
2667                 lighting_invalidated_blocks.insert(p, block);
2668         }
2669
2670 #if 0
2671         /*
2672                 Initially update sunlight
2673         */
2674         {
2675                 core::map<v3s16, bool> light_sources;
2676                 bool black_air_left = false;
2677                 bool bottom_invalid =
2678                                 block->propagateSunlight(light_sources, true,
2679                                 &black_air_left);
2680
2681                 // If sunlight didn't reach everywhere and part of block is
2682                 // above ground, lighting has to be properly updated
2683                 //if(black_air_left && some_part_underground)
2684                 if(black_air_left)
2685                 {
2686                         lighting_invalidated_blocks[block->getPos()] = block;
2687                 }
2688
2689                 if(bottom_invalid)
2690                 {
2691                         lighting_invalidated_blocks[block->getPos()] = block;
2692                 }
2693         }
2694 #endif
2695
2696         return block;
2697 }
2698 #endif
2699
2700 s16 ServerMap::findGroundLevel(v2s16 p2d)
2701 {
2702 #if 0
2703         /*
2704                 Uh, just do something random...
2705         */
2706         // Find existing map from top to down
2707         s16 max=63;
2708         s16 min=-64;
2709         v3s16 p(p2d.X, max, p2d.Y);
2710         for(; p.Y>min; p.Y--)
2711         {
2712                 MapNode n = getNodeNoEx(p);
2713                 if(n.getContent() != CONTENT_IGNORE)
2714                         break;
2715         }
2716         if(p.Y == min)
2717                 goto plan_b;
2718         // If this node is not air, go to plan b
2719         if(getNodeNoEx(p).getContent() != CONTENT_AIR)
2720                 goto plan_b;
2721         // Search existing walkable and return it
2722         for(; p.Y>min; p.Y--)
2723         {
2724                 MapNode n = getNodeNoEx(p);
2725                 if(content_walkable(n.d) && n.getContent() != CONTENT_IGNORE)
2726                         return p.Y;
2727         }
2728
2729         // Move to plan b
2730 plan_b:
2731 #endif
2732
2733         /*
2734                 Determine from map generator noise functions
2735         */
2736
2737         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2738         return level;
2739
2740         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2741         //return (s16)level;
2742 }
2743
2744 void ServerMap::createDirs(std::string path)
2745 {
2746         if(fs::CreateAllDirs(path) == false)
2747         {
2748                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2749                                 <<"\""<<path<<"\""<<std::endl;
2750                 throw BaseException("ServerMap failed to create directory");
2751         }
2752 }
2753
2754 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2755 {
2756         char cc[9];
2757         switch(layout)
2758         {
2759                 case 1:
2760                         snprintf(cc, 9, "%.4x%.4x",
2761                                 (unsigned int)pos.X&0xffff,
2762                                 (unsigned int)pos.Y&0xffff);
2763
2764                         return m_savedir + "/sectors/" + cc;
2765                 case 2:
2766                         snprintf(cc, 9, "%.3x/%.3x",
2767                                 (unsigned int)pos.X&0xfff,
2768                                 (unsigned int)pos.Y&0xfff);
2769
2770                         return m_savedir + "/sectors2/" + cc;
2771                 default:
2772                         assert(false);
2773         }
2774 }
2775
2776 v2s16 ServerMap::getSectorPos(std::string dirname)
2777 {
2778         unsigned int x, y;
2779         int r;
2780         size_t spos = dirname.rfind('/') + 1;
2781         assert(spos != std::string::npos);
2782         if(dirname.size() - spos == 8)
2783         {
2784                 // Old layout
2785                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2786         }
2787         else if(dirname.size() - spos == 3)
2788         {
2789                 // New layout
2790                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2791                 // Sign-extend the 12 bit values up to 16 bits...
2792                 if(x&0x800) x|=0xF000;
2793                 if(y&0x800) y|=0xF000;
2794         }
2795         else
2796         {
2797                 assert(false);
2798         }
2799         assert(r == 2);
2800         v2s16 pos((s16)x, (s16)y);
2801         return pos;
2802 }
2803
2804 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2805 {
2806         v2s16 p2d = getSectorPos(sectordir);
2807
2808         if(blockfile.size() != 4){
2809                 throw InvalidFilenameException("Invalid block filename");
2810         }
2811         unsigned int y;
2812         int r = sscanf(blockfile.c_str(), "%4x", &y);
2813         if(r != 1)
2814                 throw InvalidFilenameException("Invalid block filename");
2815         return v3s16(p2d.X, y, p2d.Y);
2816 }
2817
2818 std::string ServerMap::getBlockFilename(v3s16 p)
2819 {
2820         char cc[5];
2821         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2822         return cc;
2823 }
2824
2825 void ServerMap::save(bool only_changed)
2826 {
2827         DSTACK(__FUNCTION_NAME);
2828         if(m_map_saving_enabled == false)
2829         {
2830                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2831                 return;
2832         }
2833
2834         if(only_changed == false)
2835                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2836                                 <<std::endl;
2837
2838         if(only_changed == false || m_map_metadata_changed)
2839         {
2840                 saveMapMeta();
2841         }
2842
2843         u32 sector_meta_count = 0;
2844         u32 block_count = 0;
2845         u32 block_count_all = 0; // Number of blocks in memory
2846
2847         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2848         for(; i.atEnd() == false; i++)
2849         {
2850                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2851                 assert(sector->getId() == MAPSECTOR_SERVER);
2852
2853                 if(sector->differs_from_disk || only_changed == false)
2854                 {
2855                         saveSectorMeta(sector);
2856                         sector_meta_count++;
2857                 }
2858                 core::list<MapBlock*> blocks;
2859                 sector->getBlocks(blocks);
2860                 core::list<MapBlock*>::Iterator j;
2861                 for(j=blocks.begin(); j!=blocks.end(); j++)
2862                 {
2863                         MapBlock *block = *j;
2864
2865                         block_count_all++;
2866
2867                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2868                                         || only_changed == false)
2869                         {
2870                                 saveBlock(block);
2871                                 block_count++;
2872
2873                                 /*dstream<<"ServerMap: Written block ("
2874                                                 <<block->getPos().X<<","
2875                                                 <<block->getPos().Y<<","
2876                                                 <<block->getPos().Z<<")"
2877                                                 <<std::endl;*/
2878                         }
2879                 }
2880         }
2881
2882         /*
2883                 Only print if something happened or saved whole map
2884         */
2885         if(only_changed == false || sector_meta_count != 0
2886                         || block_count != 0)
2887         {
2888                 dstream<<DTIME<<"ServerMap: Written: "
2889                                 <<sector_meta_count<<" sector metadata files, "
2890                                 <<block_count<<" block files"
2891                                 <<", "<<block_count_all<<" blocks in memory."
2892                                 <<std::endl;
2893         }
2894 }
2895
2896 void ServerMap::saveMapMeta()
2897 {
2898         DSTACK(__FUNCTION_NAME);
2899
2900         dstream<<"INFO: ServerMap::saveMapMeta(): "
2901                         <<"seed="<<m_seed
2902                         <<std::endl;
2903
2904         createDirs(m_savedir);
2905
2906         std::string fullpath = m_savedir + "/map_meta.txt";
2907         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2908         if(os.good() == false)
2909         {
2910                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2911                                 <<"could not open"<<fullpath<<std::endl;
2912                 throw FileNotGoodException("Cannot open chunk metadata");
2913         }
2914
2915         Settings params;
2916         params.setU64("seed", m_seed);
2917
2918         params.writeLines(os);
2919
2920         os<<"[end_of_params]\n";
2921
2922         m_map_metadata_changed = false;
2923 }
2924
2925 void ServerMap::loadMapMeta()
2926 {
2927         DSTACK(__FUNCTION_NAME);
2928
2929         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2930                         <<std::endl;
2931
2932         std::string fullpath = m_savedir + "/map_meta.txt";
2933         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2934         if(is.good() == false)
2935         {
2936                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2937                                 <<"could not open"<<fullpath<<std::endl;
2938                 throw FileNotGoodException("Cannot open map metadata");
2939         }
2940
2941         Settings params;
2942
2943         for(;;)
2944         {
2945                 if(is.eof())
2946                         throw SerializationError
2947                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2948                 std::string line;
2949                 std::getline(is, line);
2950                 std::string trimmedline = trim(line);
2951                 if(trimmedline == "[end_of_params]")
2952                         break;
2953                 params.parseConfigLine(line);
2954         }
2955
2956         m_seed = params.getU64("seed");
2957
2958         dstream<<"INFO: ServerMap::loadMapMeta(): "
2959                         <<"seed="<<m_seed
2960                         <<std::endl;
2961 }
2962
2963 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2964 {
2965         DSTACK(__FUNCTION_NAME);
2966         // Format used for writing
2967         u8 version = SER_FMT_VER_HIGHEST;
2968         // Get destination
2969         v2s16 pos = sector->getPos();
2970         std::string dir = getSectorDir(pos);
2971         createDirs(dir);
2972
2973         std::string fullpath = dir + "/meta";
2974         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2975         if(o.good() == false)
2976                 throw FileNotGoodException("Cannot open sector metafile");
2977
2978         sector->serialize(o, version);
2979
2980         sector->differs_from_disk = false;
2981 }
2982
2983 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
2984 {
2985         DSTACK(__FUNCTION_NAME);
2986         // Get destination
2987         v2s16 p2d = getSectorPos(sectordir);
2988
2989         ServerMapSector *sector = NULL;
2990
2991         std::string fullpath = sectordir + "/meta";
2992         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2993         if(is.good() == false)
2994         {
2995                 // If the directory exists anyway, it probably is in some old
2996                 // format. Just go ahead and create the sector.
2997                 if(fs::PathExists(sectordir))
2998                 {
2999                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
3000                                         <<fullpath<<" doesn't exist but directory does."
3001                                         <<" Continuing with a sector with no metadata."
3002                                         <<std::endl;*/
3003                         sector = new ServerMapSector(this, p2d);
3004                         m_sectors.insert(p2d, sector);
3005                 }
3006                 else
3007                 {
3008                         throw FileNotGoodException("Cannot open sector metafile");
3009                 }
3010         }
3011         else
3012         {
3013                 sector = ServerMapSector::deSerialize
3014                                 (is, this, p2d, m_sectors);
3015                 if(save_after_load)
3016                         saveSectorMeta(sector);
3017         }
3018
3019         sector->differs_from_disk = false;
3020
3021         return sector;
3022 }
3023
3024 bool ServerMap::loadSectorMeta(v2s16 p2d)
3025 {
3026         DSTACK(__FUNCTION_NAME);
3027
3028         MapSector *sector = NULL;
3029
3030         // The directory layout we're going to load from.
3031         //  1 - original sectors/xxxxzzzz/
3032         //  2 - new sectors2/xxx/zzz/
3033         //  If we load from anything but the latest structure, we will
3034         //  immediately save to the new one, and remove the old.
3035         int loadlayout = 1;
3036         std::string sectordir1 = getSectorDir(p2d, 1);
3037         std::string sectordir;
3038         if(fs::PathExists(sectordir1))
3039         {
3040                 sectordir = sectordir1;
3041         }
3042         else
3043         {
3044                 loadlayout = 2;
3045                 sectordir = getSectorDir(p2d, 2);
3046         }
3047
3048         try{
3049                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3050         }
3051         catch(InvalidFilenameException &e)
3052         {
3053                 return false;
3054         }
3055         catch(FileNotGoodException &e)
3056         {
3057                 return false;
3058         }
3059         catch(std::exception &e)
3060         {
3061                 return false;
3062         }
3063
3064         return true;
3065 }
3066
3067 #if 0
3068 bool ServerMap::loadSectorFull(v2s16 p2d)
3069 {
3070         DSTACK(__FUNCTION_NAME);
3071
3072         MapSector *sector = NULL;
3073
3074         // The directory layout we're going to load from.
3075         //  1 - original sectors/xxxxzzzz/
3076         //  2 - new sectors2/xxx/zzz/
3077         //  If we load from anything but the latest structure, we will
3078         //  immediately save to the new one, and remove the old.
3079         int loadlayout = 1;
3080         std::string sectordir1 = getSectorDir(p2d, 1);
3081         std::string sectordir;
3082         if(fs::PathExists(sectordir1))
3083         {
3084                 sectordir = sectordir1;
3085         }
3086         else
3087         {
3088                 loadlayout = 2;
3089                 sectordir = getSectorDir(p2d, 2);
3090         }
3091
3092         try{
3093                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3094         }
3095         catch(InvalidFilenameException &e)
3096         {
3097                 return false;
3098         }
3099         catch(FileNotGoodException &e)
3100         {
3101                 return false;
3102         }
3103         catch(std::exception &e)
3104         {
3105                 return false;
3106         }
3107
3108         /*
3109                 Load blocks
3110         */
3111         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3112                         (sectordir);
3113         std::vector<fs::DirListNode>::iterator i2;
3114         for(i2=list2.begin(); i2!=list2.end(); i2++)
3115         {
3116                 // We want files
3117                 if(i2->dir)
3118                         continue;
3119                 try{
3120                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3121                 }
3122                 catch(InvalidFilenameException &e)
3123                 {
3124                         // This catches unknown crap in directory
3125                 }
3126         }
3127
3128         if(loadlayout != 2)
3129         {
3130                 dstream<<"Sector converted to new layout - deleting "<<
3131                         sectordir1<<std::endl;
3132                 fs::RecursiveDelete(sectordir1);
3133         }
3134
3135         return true;
3136 }
3137 #endif
3138
3139 void ServerMap::saveBlock(MapBlock *block)
3140 {
3141         DSTACK(__FUNCTION_NAME);
3142         /*
3143                 Dummy blocks are not written
3144         */
3145         if(block->isDummy())
3146         {
3147                 /*v3s16 p = block->getPos();
3148                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3149                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3150                 return;
3151         }
3152
3153         // Format used for writing
3154         u8 version = SER_FMT_VER_HIGHEST;
3155         // Get destination
3156         v3s16 p3d = block->getPos();
3157
3158         v2s16 p2d(p3d.X, p3d.Z);
3159         std::string sectordir = getSectorDir(p2d);
3160
3161         createDirs(sectordir);
3162
3163         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3164         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3165         if(o.good() == false)
3166                 throw FileNotGoodException("Cannot open block data");
3167
3168         /*
3169                 [0] u8 serialization version
3170                 [1] data
3171         */
3172         o.write((char*)&version, 1);
3173
3174         // Write basic data
3175         block->serialize(o, version);
3176
3177         // Write extra data stored on disk
3178         block->serializeDiskExtra(o, version);
3179
3180         // We just wrote it to the disk so clear modified flag
3181         block->resetModified();
3182 }
3183
3184 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3185 {
3186         DSTACK(__FUNCTION_NAME);
3187
3188         std::string fullpath = sectordir+"/"+blockfile;
3189         try{
3190
3191                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3192                 if(is.good() == false)
3193                         throw FileNotGoodException("Cannot open block file");
3194
3195                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3196                 v2s16 p2d(p3d.X, p3d.Z);
3197
3198                 assert(sector->getPos() == p2d);
3199
3200                 u8 version = SER_FMT_VER_INVALID;
3201                 is.read((char*)&version, 1);
3202
3203                 if(is.fail())
3204                         throw SerializationError("ServerMap::loadBlock(): Failed"
3205                                         " to read MapBlock version");
3206
3207                 /*u32 block_size = MapBlock::serializedLength(version);
3208                 SharedBuffer<u8> data(block_size);
3209                 is.read((char*)*data, block_size);*/
3210
3211                 // This will always return a sector because we're the server
3212                 //MapSector *sector = emergeSector(p2d);
3213
3214                 MapBlock *block = NULL;
3215                 bool created_new = false;
3216                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3217                 if(block == NULL)
3218                 {
3219                         block = sector->createBlankBlockNoInsert(p3d.Y);
3220                         created_new = true;
3221                 }
3222
3223                 // Read basic data
3224                 block->deSerialize(is, version);
3225
3226                 // Read extra data stored on disk
3227                 block->deSerializeDiskExtra(is, version);
3228
3229                 // If it's a new block, insert it to the map
3230                 if(created_new)
3231                         sector->insertBlock(block);
3232
3233                 /*
3234                         Save blocks loaded in old format in new format
3235                 */
3236
3237                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3238                 {
3239                         saveBlock(block);
3240                 }
3241
3242                 // We just loaded it from the disk, so it's up-to-date.
3243                 block->resetModified();
3244
3245         }
3246         catch(SerializationError &e)
3247         {
3248                 dstream<<"WARNING: Invalid block data on disk "
3249                                 <<"fullpath="<<fullpath
3250                                 <<" (SerializationError). "
3251                                 <<"what()="<<e.what()
3252                                 <<std::endl;
3253                                 //" Ignoring. A new one will be generated.
3254                 assert(0);
3255
3256                 // TODO: Backup file; name is in fullpath.
3257         }
3258 }
3259
3260 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3261 {
3262         DSTACK(__FUNCTION_NAME);
3263
3264         v2s16 p2d(blockpos.X, blockpos.Z);
3265
3266         // The directory layout we're going to load from.
3267         //  1 - original sectors/xxxxzzzz/
3268         //  2 - new sectors2/xxx/zzz/
3269         //  If we load from anything but the latest structure, we will
3270         //  immediately save to the new one, and remove the old.
3271         int loadlayout = 1;
3272         std::string sectordir1 = getSectorDir(p2d, 1);
3273         std::string sectordir;
3274         if(fs::PathExists(sectordir1))
3275         {
3276                 sectordir = sectordir1;
3277         }
3278         else
3279         {
3280                 loadlayout = 2;
3281                 sectordir = getSectorDir(p2d, 2);
3282         }
3283
3284         /*
3285                 Make sure sector is loaded
3286         */
3287         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3288         if(sector == NULL)
3289         {
3290                 try{
3291                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3292                 }
3293                 catch(InvalidFilenameException &e)
3294                 {
3295                         return false;
3296                 }
3297                 catch(FileNotGoodException &e)
3298                 {
3299                         return false;
3300                 }
3301                 catch(std::exception &e)
3302                 {
3303                         return false;
3304                 }
3305         }
3306
3307         /*
3308                 Make sure file exists
3309         */
3310
3311         std::string blockfilename = getBlockFilename(blockpos);
3312         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3313                 return NULL;
3314
3315         /*
3316                 Load block
3317         */
3318         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3319         return getBlockNoCreateNoEx(blockpos);
3320 }
3321
3322 void ServerMap::PrintInfo(std::ostream &out)
3323 {
3324         out<<"ServerMap: ";
3325 }
3326
3327 #ifndef SERVER
3328
3329 /*
3330         ClientMap
3331 */
3332
3333 ClientMap::ClientMap(
3334                 Client *client,
3335                 MapDrawControl &control,
3336                 scene::ISceneNode* parent,
3337                 scene::ISceneManager* mgr,
3338                 s32 id
3339 ):
3340         Map(dout_client),
3341         scene::ISceneNode(parent, mgr, id),
3342         m_client(client),
3343         m_control(control),
3344         m_camera_position(0,0,0),
3345         m_camera_direction(0,0,1)
3346 {
3347         m_camera_mutex.Init();
3348         assert(m_camera_mutex.IsInitialized());
3349
3350         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3351                         BS*1000000,BS*1000000,BS*1000000);
3352 }
3353
3354 ClientMap::~ClientMap()
3355 {
3356         /*JMutexAutoLock lock(mesh_mutex);
3357
3358         if(mesh != NULL)
3359         {
3360                 mesh->drop();
3361                 mesh = NULL;
3362         }*/
3363 }
3364
3365 MapSector * ClientMap::emergeSector(v2s16 p2d)
3366 {
3367         DSTACK(__FUNCTION_NAME);
3368         // Check that it doesn't exist already
3369         try{
3370                 return getSectorNoGenerate(p2d);
3371         }
3372         catch(InvalidPositionException &e)
3373         {
3374         }
3375
3376         // Create a sector
3377         ClientMapSector *sector = new ClientMapSector(this, p2d);
3378
3379         {
3380                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3381                 m_sectors.insert(p2d, sector);
3382         }
3383
3384         return sector;
3385 }
3386
3387 #if 0
3388 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3389 {
3390         DSTACK(__FUNCTION_NAME);
3391         ClientMapSector *sector = NULL;
3392
3393         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3394
3395         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3396
3397         if(n != NULL)
3398         {
3399                 sector = (ClientMapSector*)n->getValue();
3400                 assert(sector->getId() == MAPSECTOR_CLIENT);
3401         }
3402         else
3403         {
3404                 sector = new ClientMapSector(this, p2d);
3405                 {
3406                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3407                         m_sectors.insert(p2d, sector);
3408                 }
3409         }
3410
3411         sector->deSerialize(is);
3412 }
3413 #endif
3414
3415 void ClientMap::OnRegisterSceneNode()
3416 {
3417         if(IsVisible)
3418         {
3419                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3420                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3421         }
3422
3423         ISceneNode::OnRegisterSceneNode();
3424 }
3425
3426 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3427 {
3428         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3429         DSTACK(__FUNCTION_NAME);
3430
3431         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3432
3433         /*
3434                 This is called two times per frame, reset on the non-transparent one
3435         */
3436         if(pass == scene::ESNRP_SOLID)
3437         {
3438                 m_last_drawn_sectors.clear();
3439         }
3440
3441         /*
3442                 Get time for measuring timeout.
3443
3444                 Measuring time is very useful for long delays when the
3445                 machine is swapping a lot.
3446         */
3447         int time1 = time(0);
3448
3449         //u32 daynight_ratio = m_client->getDayNightRatio();
3450
3451         m_camera_mutex.Lock();
3452         v3f camera_position = m_camera_position;
3453         v3f camera_direction = m_camera_direction;
3454         m_camera_mutex.Unlock();
3455
3456         /*
3457                 Get all blocks and draw all visible ones
3458         */
3459
3460         v3s16 cam_pos_nodes(
3461                         camera_position.X / BS,
3462                         camera_position.Y / BS,
3463                         camera_position.Z / BS);
3464
3465         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3466
3467         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3468         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3469
3470         // Take a fair amount as we will be dropping more out later
3471         v3s16 p_blocks_min(
3472                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3473                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3474                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3475         v3s16 p_blocks_max(
3476                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3477                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3478                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3479
3480         u32 vertex_count = 0;
3481
3482         // For limiting number of mesh updates per frame
3483         u32 mesh_update_count = 0;
3484
3485         u32 blocks_would_have_drawn = 0;
3486         u32 blocks_drawn = 0;
3487
3488         int timecheck_counter = 0;
3489         core::map<v2s16, MapSector*>::Iterator si;
3490         si = m_sectors.getIterator();
3491         for(; si.atEnd() == false; si++)
3492         {
3493                 {
3494                         timecheck_counter++;
3495                         if(timecheck_counter > 50)
3496                         {
3497                                 timecheck_counter = 0;
3498                                 int time2 = time(0);
3499                                 if(time2 > time1 + 4)
3500                                 {
3501                                         dstream<<"ClientMap::renderMap(): "
3502                                                 "Rendering takes ages, returning."
3503                                                 <<std::endl;
3504                                         return;
3505                                 }
3506                         }
3507                 }
3508
3509                 MapSector *sector = si.getNode()->getValue();
3510                 v2s16 sp = sector->getPos();
3511
3512                 if(m_control.range_all == false)
3513                 {
3514                         if(sp.X < p_blocks_min.X
3515                         || sp.X > p_blocks_max.X
3516                         || sp.Y < p_blocks_min.Z
3517                         || sp.Y > p_blocks_max.Z)
3518                                 continue;
3519                 }
3520
3521                 core::list< MapBlock * > sectorblocks;
3522                 sector->getBlocks(sectorblocks);
3523
3524                 /*
3525                         Draw blocks
3526                 */
3527
3528                 u32 sector_blocks_drawn = 0;
3529
3530                 core::list< MapBlock * >::Iterator i;
3531                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3532                 {
3533                         MapBlock *block = *i;
3534
3535                         /*
3536                                 Compare block position to camera position, skip
3537                                 if not seen on display
3538                         */
3539
3540                         float range = 100000 * BS;
3541                         if(m_control.range_all == false)
3542                                 range = m_control.wanted_range * BS;
3543
3544                         float d = 0.0;
3545                         if(isBlockInSight(block->getPos(), camera_position,
3546                                         camera_direction, range, &d) == false)
3547                         {
3548                                 continue;
3549                         }
3550
3551                         // Okay, this block will be drawn. Reset usage timer.
3552                         block->resetUsageTimer();
3553
3554                         // This is ugly (spherical distance limit?)
3555                         /*if(m_control.range_all == false &&
3556                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3557                                 continue;*/
3558
3559 #if 1
3560                         /*
3561                                 Update expired mesh (used for day/night change)
3562
3563                                 It doesn't work exactly like it should now with the
3564                                 tasked mesh update but whatever.
3565                         */
3566
3567                         bool mesh_expired = false;
3568
3569                         {
3570                                 JMutexAutoLock lock(block->mesh_mutex);
3571
3572                                 mesh_expired = block->getMeshExpired();
3573
3574                                 // Mesh has not been expired and there is no mesh:
3575                                 // block has no content
3576                                 if(block->mesh == NULL && mesh_expired == false)
3577                                         continue;
3578                         }
3579
3580                         f32 faraway = BS*50;
3581                         //f32 faraway = m_control.wanted_range * BS;
3582
3583                         /*
3584                                 This has to be done with the mesh_mutex unlocked
3585                         */
3586                         // Pretty random but this should work somewhat nicely
3587                         if(mesh_expired && (
3588                                         (mesh_update_count < 3
3589                                                 && (d < faraway || mesh_update_count < 2)
3590                                         )
3591                                         ||
3592                                         (m_control.range_all && mesh_update_count < 20)
3593                                 )
3594                         )
3595                         /*if(mesh_expired && mesh_update_count < 6
3596                                         && (d < faraway || mesh_update_count < 3))*/
3597                         {
3598                                 mesh_update_count++;
3599
3600                                 // Mesh has been expired: generate new mesh
3601                                 //block->updateMesh(daynight_ratio);
3602                                 m_client->addUpdateMeshTask(block->getPos());
3603
3604                                 mesh_expired = false;
3605                         }
3606
3607 #endif
3608                         /*
3609                                 Draw the faces of the block
3610                         */
3611                         {
3612                                 JMutexAutoLock lock(block->mesh_mutex);
3613
3614                                 scene::SMesh *mesh = block->mesh;
3615
3616                                 if(mesh == NULL)
3617                                         continue;
3618
3619                                 blocks_would_have_drawn++;
3620                                 if(blocks_drawn >= m_control.wanted_max_blocks
3621                                                 && m_control.range_all == false
3622                                                 && d > m_control.wanted_min_range * BS)
3623                                         continue;
3624
3625                                 blocks_drawn++;
3626                                 sector_blocks_drawn++;
3627
3628                                 u32 c = mesh->getMeshBufferCount();
3629
3630                                 for(u32 i=0; i<c; i++)
3631                                 {
3632                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3633                                         const video::SMaterial& material = buf->getMaterial();
3634                                         video::IMaterialRenderer* rnd =
3635                                                         driver->getMaterialRenderer(material.MaterialType);
3636                                         bool transparent = (rnd && rnd->isTransparent());
3637                                         // Render transparent on transparent pass and likewise.
3638                                         if(transparent == is_transparent_pass)
3639                                         {
3640                                                 /*
3641                                                         This *shouldn't* hurt too much because Irrlicht
3642                                                         doesn't change opengl textures if the old
3643                                                         material is set again.
3644                                                 */
3645                                                 driver->setMaterial(buf->getMaterial());
3646                                                 driver->drawMeshBuffer(buf);
3647                                                 vertex_count += buf->getVertexCount();
3648                                         }
3649                                 }
3650                         }
3651                 } // foreach sectorblocks
3652
3653                 if(sector_blocks_drawn != 0)
3654                 {
3655                         m_last_drawn_sectors[sp] = true;
3656                 }
3657         }
3658
3659         m_control.blocks_drawn = blocks_drawn;
3660         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3661
3662         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3663                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3664 }
3665
3666 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3667                 core::map<v3s16, MapBlock*> *affected_blocks)
3668 {
3669         bool changed = false;
3670         /*
3671                 Add it to all blocks touching it
3672         */
3673         v3s16 dirs[7] = {
3674                 v3s16(0,0,0), // this
3675                 v3s16(0,0,1), // back
3676                 v3s16(0,1,0), // top
3677                 v3s16(1,0,0), // right
3678                 v3s16(0,0,-1), // front
3679                 v3s16(0,-1,0), // bottom
3680                 v3s16(-1,0,0), // left
3681         };
3682         for(u16 i=0; i<7; i++)
3683         {
3684                 v3s16 p2 = p + dirs[i];
3685                 // Block position of neighbor (or requested) node
3686                 v3s16 blockpos = getNodeBlockPos(p2);
3687                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3688                 if(blockref == NULL)
3689                         continue;
3690                 // Relative position of requested node
3691                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3692                 if(blockref->setTempMod(relpos, mod))
3693                 {
3694                         changed = true;
3695                 }
3696         }
3697         if(changed && affected_blocks!=NULL)
3698         {
3699                 for(u16 i=0; i<7; i++)
3700                 {
3701                         v3s16 p2 = p + dirs[i];
3702                         // Block position of neighbor (or requested) node
3703                         v3s16 blockpos = getNodeBlockPos(p2);
3704                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3705                         if(blockref == NULL)
3706                                 continue;
3707                         affected_blocks->insert(blockpos, blockref);
3708                 }
3709         }
3710         return changed;
3711 }
3712
3713 bool ClientMap::clearTempMod(v3s16 p,
3714                 core::map<v3s16, MapBlock*> *affected_blocks)
3715 {
3716         bool changed = false;
3717         v3s16 dirs[7] = {
3718                 v3s16(0,0,0), // this
3719                 v3s16(0,0,1), // back
3720                 v3s16(0,1,0), // top
3721                 v3s16(1,0,0), // right
3722                 v3s16(0,0,-1), // front
3723                 v3s16(0,-1,0), // bottom
3724                 v3s16(-1,0,0), // left
3725         };
3726         for(u16 i=0; i<7; i++)
3727         {
3728                 v3s16 p2 = p + dirs[i];
3729                 // Block position of neighbor (or requested) node
3730                 v3s16 blockpos = getNodeBlockPos(p2);
3731                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3732                 if(blockref == NULL)
3733                         continue;
3734                 // Relative position of requested node
3735                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3736                 if(blockref->clearTempMod(relpos))
3737                 {
3738                         changed = true;
3739                 }
3740         }
3741         if(changed && affected_blocks!=NULL)
3742         {
3743                 for(u16 i=0; i<7; i++)
3744                 {
3745                         v3s16 p2 = p + dirs[i];
3746                         // Block position of neighbor (or requested) node
3747                         v3s16 blockpos = getNodeBlockPos(p2);
3748                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3749                         if(blockref == NULL)
3750                                 continue;
3751                         affected_blocks->insert(blockpos, blockref);
3752                 }
3753         }
3754         return changed;
3755 }
3756
3757 void ClientMap::expireMeshes(bool only_daynight_diffed)
3758 {
3759         TimeTaker timer("expireMeshes()");
3760
3761         core::map<v2s16, MapSector*>::Iterator si;
3762         si = m_sectors.getIterator();
3763         for(; si.atEnd() == false; si++)
3764         {
3765                 MapSector *sector = si.getNode()->getValue();
3766
3767                 core::list< MapBlock * > sectorblocks;
3768                 sector->getBlocks(sectorblocks);
3769
3770                 core::list< MapBlock * >::Iterator i;
3771                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3772                 {
3773                         MapBlock *block = *i;
3774
3775                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3776                         {
3777                                 continue;
3778                         }
3779
3780                         {
3781                                 JMutexAutoLock lock(block->mesh_mutex);
3782                                 if(block->mesh != NULL)
3783                                 {
3784                                         /*block->mesh->drop();
3785                                         block->mesh = NULL;*/
3786                                         block->setMeshExpired(true);
3787                                 }
3788                         }
3789                 }
3790         }
3791 }
3792
3793 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3794 {
3795         assert(mapType() == MAPTYPE_CLIENT);
3796
3797         try{
3798                 v3s16 p = blockpos + v3s16(0,0,0);
3799                 MapBlock *b = getBlockNoCreate(p);
3800                 b->updateMesh(daynight_ratio);
3801                 //b->setMeshExpired(true);
3802         }
3803         catch(InvalidPositionException &e){}
3804         // Leading edge
3805         try{
3806                 v3s16 p = blockpos + v3s16(-1,0,0);
3807                 MapBlock *b = getBlockNoCreate(p);
3808                 b->updateMesh(daynight_ratio);
3809                 //b->setMeshExpired(true);
3810         }
3811         catch(InvalidPositionException &e){}
3812         try{
3813                 v3s16 p = blockpos + v3s16(0,-1,0);
3814                 MapBlock *b = getBlockNoCreate(p);
3815                 b->updateMesh(daynight_ratio);
3816                 //b->setMeshExpired(true);
3817         }
3818         catch(InvalidPositionException &e){}
3819         try{
3820                 v3s16 p = blockpos + v3s16(0,0,-1);
3821                 MapBlock *b = getBlockNoCreate(p);
3822                 b->updateMesh(daynight_ratio);
3823                 //b->setMeshExpired(true);
3824         }
3825         catch(InvalidPositionException &e){}
3826 }
3827
3828 #if 0
3829 /*
3830         Update mesh of block in which the node is, and if the node is at the
3831         leading edge, update the appropriate leading blocks too.
3832 */
3833 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3834 {
3835         v3s16 dirs[4] = {
3836                 v3s16(0,0,0),
3837                 v3s16(-1,0,0),
3838                 v3s16(0,-1,0),
3839                 v3s16(0,0,-1),
3840         };
3841         v3s16 blockposes[4];
3842         for(u32 i=0; i<4; i++)
3843         {
3844                 v3s16 np = nodepos + dirs[i];
3845                 blockposes[i] = getNodeBlockPos(np);
3846                 // Don't update mesh of block if it has been done already
3847                 bool already_updated = false;
3848                 for(u32 j=0; j<i; j++)
3849                 {
3850                         if(blockposes[j] == blockposes[i])
3851                         {
3852                                 already_updated = true;
3853                                 break;
3854                         }
3855                 }
3856                 if(already_updated)
3857                         continue;
3858                 // Update mesh
3859                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3860                 b->updateMesh(daynight_ratio);
3861         }
3862 }
3863 #endif
3864
3865 void ClientMap::PrintInfo(std::ostream &out)
3866 {
3867         out<<"ClientMap: ";
3868 }
3869
3870 #endif // !SERVER
3871
3872 /*
3873         MapVoxelManipulator
3874 */
3875
3876 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3877 {
3878         m_map = map;
3879 }
3880
3881 MapVoxelManipulator::~MapVoxelManipulator()
3882 {
3883         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3884                         <<std::endl;*/
3885 }
3886
3887 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3888 {
3889         TimeTaker timer1("emerge", &emerge_time);
3890
3891         // Units of these are MapBlocks
3892         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3893         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3894
3895         VoxelArea block_area_nodes
3896                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3897
3898         addArea(block_area_nodes);
3899
3900         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3901         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3902         for(s32 x=p_min.X; x<=p_max.X; x++)
3903         {
3904                 v3s16 p(x,y,z);
3905                 core::map<v3s16, bool>::Node *n;
3906                 n = m_loaded_blocks.find(p);
3907                 if(n != NULL)
3908                         continue;
3909
3910                 bool block_data_inexistent = false;
3911                 try
3912                 {
3913                         TimeTaker timer1("emerge load", &emerge_load_time);
3914
3915                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3916                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3917                                         <<" wanted area: ";
3918                         a.print(dstream);
3919                         dstream<<std::endl;*/
3920
3921                         MapBlock *block = m_map->getBlockNoCreate(p);
3922                         if(block->isDummy())
3923                                 block_data_inexistent = true;
3924                         else
3925                                 block->copyTo(*this);
3926                 }
3927                 catch(InvalidPositionException &e)
3928                 {
3929                         block_data_inexistent = true;
3930                 }
3931
3932                 if(block_data_inexistent)
3933                 {
3934                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3935                         // Fill with VOXELFLAG_INEXISTENT
3936                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3937                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3938                         {
3939                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3940                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3941                         }
3942                 }
3943
3944                 m_loaded_blocks.insert(p, !block_data_inexistent);
3945         }
3946
3947         //dstream<<"emerge done"<<std::endl;
3948 }
3949
3950 /*
3951         SUGG: Add an option to only update eg. water and air nodes.
3952               This will make it interfere less with important stuff if
3953                   run on background.
3954 */
3955 void MapVoxelManipulator::blitBack
3956                 (core::map<v3s16, MapBlock*> & modified_blocks)
3957 {
3958         if(m_area.getExtent() == v3s16(0,0,0))
3959                 return;
3960
3961         //TimeTaker timer1("blitBack");
3962
3963         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3964                         <<m_loaded_blocks.size()<<std::endl;*/
3965
3966         /*
3967                 Initialize block cache
3968         */
3969         v3s16 blockpos_last;
3970         MapBlock *block = NULL;
3971         bool block_checked_in_modified = false;
3972
3973         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3974         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3975         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3976         {
3977                 v3s16 p(x,y,z);
3978
3979                 u8 f = m_flags[m_area.index(p)];
3980                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
3981                         continue;
3982
3983                 MapNode &n = m_data[m_area.index(p)];
3984
3985                 v3s16 blockpos = getNodeBlockPos(p);
3986
3987                 try
3988                 {
3989                         // Get block
3990                         if(block == NULL || blockpos != blockpos_last){
3991                                 block = m_map->getBlockNoCreate(blockpos);
3992                                 blockpos_last = blockpos;
3993                                 block_checked_in_modified = false;
3994                         }
3995
3996                         // Calculate relative position in block
3997                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
3998
3999                         // Don't continue if nothing has changed here
4000                         if(block->getNode(relpos) == n)
4001                                 continue;
4002
4003                         //m_map->setNode(m_area.MinEdge + p, n);
4004                         block->setNode(relpos, n);
4005
4006                         /*
4007                                 Make sure block is in modified_blocks
4008                         */
4009                         if(block_checked_in_modified == false)
4010                         {
4011                                 modified_blocks[blockpos] = block;
4012                                 block_checked_in_modified = true;
4013                         }
4014                 }
4015                 catch(InvalidPositionException &e)
4016                 {
4017                 }
4018         }
4019 }
4020
4021 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
4022                 MapVoxelManipulator(map),
4023                 m_create_area(false)
4024 {
4025 }
4026
4027 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
4028 {
4029 }
4030
4031 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
4032 {
4033         // Just create the area so that it can be pointed to
4034         VoxelManipulator::emerge(a, caller_id);
4035 }
4036
4037 void ManualMapVoxelManipulator::initialEmerge(
4038                 v3s16 blockpos_min, v3s16 blockpos_max)
4039 {
4040         TimeTaker timer1("initialEmerge", &emerge_time);
4041
4042         // Units of these are MapBlocks
4043         v3s16 p_min = blockpos_min;
4044         v3s16 p_max = blockpos_max;
4045
4046         VoxelArea block_area_nodes
4047                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4048
4049         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
4050         if(size_MB >= 1)
4051         {
4052                 dstream<<"initialEmerge: area: ";
4053                 block_area_nodes.print(dstream);
4054                 dstream<<" ("<<size_MB<<"MB)";
4055                 dstream<<std::endl;
4056         }
4057
4058         addArea(block_area_nodes);
4059
4060         for(s32 z=p_min.Z; z<=p_max.Z; z++)
4061         for(s32 y=p_min.Y; y<=p_max.Y; y++)
4062         for(s32 x=p_min.X; x<=p_max.X; x++)
4063         {
4064                 v3s16 p(x,y,z);
4065                 core::map<v3s16, bool>::Node *n;
4066                 n = m_loaded_blocks.find(p);
4067                 if(n != NULL)
4068                         continue;
4069
4070                 bool block_data_inexistent = false;
4071                 try
4072                 {
4073                         TimeTaker timer1("emerge load", &emerge_load_time);
4074
4075                         MapBlock *block = m_map->getBlockNoCreate(p);
4076                         if(block->isDummy())
4077                                 block_data_inexistent = true;
4078                         else
4079                                 block->copyTo(*this);
4080                 }
4081                 catch(InvalidPositionException &e)
4082                 {
4083                         block_data_inexistent = true;
4084                 }
4085
4086                 if(block_data_inexistent)
4087                 {
4088                         /*
4089                                 Mark area inexistent
4090                         */
4091                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4092                         // Fill with VOXELFLAG_INEXISTENT
4093                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4094                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4095                         {
4096                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4097                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4098                         }
4099                 }
4100
4101                 m_loaded_blocks.insert(p, !block_data_inexistent);
4102         }
4103 }
4104
4105 void ManualMapVoxelManipulator::blitBackAll(
4106                 core::map<v3s16, MapBlock*> * modified_blocks)
4107 {
4108         if(m_area.getExtent() == v3s16(0,0,0))
4109                 return;
4110
4111         /*
4112                 Copy data of all blocks
4113         */
4114         for(core::map<v3s16, bool>::Iterator
4115                         i = m_loaded_blocks.getIterator();
4116                         i.atEnd() == false; i++)
4117         {
4118                 v3s16 p = i.getNode()->getKey();
4119                 bool existed = i.getNode()->getValue();
4120                 if(existed == false)
4121                 {
4122                         // The Great Bug was found using this
4123                         /*dstream<<"ManualMapVoxelManipulator::blitBackAll: "
4124                                         <<"Inexistent ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4125                                         <<std::endl;*/
4126                         continue;
4127                 }
4128                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4129                 if(block == NULL)
4130                 {
4131                         dstream<<"WARNING: "<<__FUNCTION_NAME
4132                                         <<": got NULL block "
4133                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4134                                         <<std::endl;
4135                         continue;
4136                 }
4137
4138                 block->copyFrom(*this);
4139
4140                 if(modified_blocks)
4141                         modified_blocks->insert(p, block);
4142         }
4143 }
4144
4145 //END