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         if(enable_mapgen_debug_info)
2016                 dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2017                                 <<blockpos.Z<<")"<<std::endl;
2018
2019         // Do nothing if not inside limits (+-1 because of neighbors)
2020         if(blockpos_over_limit(blockpos - v3s16(1,1,1)) ||
2021                 blockpos_over_limit(blockpos + v3s16(1,1,1)))
2022         {
2023                 data->no_op = true;
2024                 return;
2025         }
2026
2027         data->no_op = false;
2028         data->seed = m_seed;
2029         data->blockpos = blockpos;
2030
2031         /*
2032                 Create the whole area of this and the neighboring blocks
2033         */
2034         {
2035                 //TimeTaker timer("initBlockMake() create area");
2036
2037                 for(s16 x=-1; x<=1; x++)
2038                 for(s16 z=-1; z<=1; z++)
2039                 {
2040                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2041                         // Sector metadata is loaded from disk if not already loaded.
2042                         ServerMapSector *sector = createSector(sectorpos);
2043                         assert(sector);
2044
2045                         for(s16 y=-1; y<=1; y++)
2046                         {
2047                                 v3s16 p(blockpos.X+x, blockpos.Y+y, blockpos.Z+z);
2048                                 //MapBlock *block = createBlock(p);
2049                                 // 1) get from memory, 2) load from disk
2050                                 MapBlock *block = emergeBlock(p, false);
2051                                 // 3) create a blank one
2052                                 if(block == NULL)
2053                                 {
2054                                         block = createBlock(p);
2055
2056                                         /*
2057                                                 Block gets sunlight if this is true.
2058
2059                                                 Refer to the map generator heuristics.
2060                                         */
2061                                         bool ug = mapgen::block_is_underground(data->seed, p);
2062                                         block->setIsUnderground(ug);
2063                                 }
2064
2065                                 // Lighting will not be valid after make_chunk is called
2066                                 block->setLightingExpired(true);
2067                                 // Lighting will be calculated
2068                                 //block->setLightingExpired(false);
2069                         }
2070                 }
2071         }
2072
2073         /*
2074                 Now we have a big empty area.
2075
2076                 Make a ManualMapVoxelManipulator that contains this and the
2077                 neighboring blocks
2078         */
2079
2080         // The area that contains this block and it's neighbors
2081         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2082         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2083
2084         data->vmanip = new ManualMapVoxelManipulator(this);
2085         //data->vmanip->setMap(this);
2086
2087         // Add the area
2088         {
2089                 //TimeTaker timer("initBlockMake() initialEmerge");
2090                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2091         }
2092
2093         // Data is ready now.
2094 }
2095
2096 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2097                 core::map<v3s16, MapBlock*> &changed_blocks)
2098 {
2099         v3s16 blockpos = data->blockpos;
2100         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2101                         <<blockpos.Z<<")"<<std::endl;*/
2102
2103         if(data->no_op)
2104         {
2105                 //dstream<<"finishBlockMake(): no-op"<<std::endl;
2106                 return NULL;
2107         }
2108
2109         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2110
2111         /*dstream<<"Resulting vmanip:"<<std::endl;
2112         data->vmanip.print(dstream);*/
2113
2114         /*
2115                 Blit generated stuff to map
2116                 NOTE: blitBackAll adds nearly everything to changed_blocks
2117         */
2118         {
2119                 // 70ms @cs=8
2120                 //TimeTaker timer("finishBlockMake() blitBackAll");
2121                 data->vmanip->blitBackAll(&changed_blocks);
2122         }
2123
2124         if(enable_mapgen_debug_info)
2125                 dstream<<"finishBlockMake: changed_blocks.size()="
2126                                 <<changed_blocks.size()<<std::endl;
2127
2128         /*
2129                 Copy transforming liquid information
2130         */
2131         while(data->transforming_liquid.size() > 0)
2132         {
2133                 v3s16 p = data->transforming_liquid.pop_front();
2134                 m_transforming_liquid.push_back(p);
2135         }
2136
2137         /*
2138                 Get central block
2139         */
2140         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2141         assert(block);
2142
2143         /*
2144                 Set is_underground flag for lighting with sunlight.
2145
2146                 Refer to map generator heuristics.
2147
2148                 NOTE: This is done in initChunkMake
2149         */
2150         //block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2151
2152
2153         /*
2154                 Add sunlight to central block.
2155                 This makes in-dark-spawning monsters to not flood the whole thing.
2156                 Do not spread the light, though.
2157         */
2158         /*core::map<v3s16, bool> light_sources;
2159         bool black_air_left = false;
2160         block->propagateSunlight(light_sources, true, &black_air_left);*/
2161
2162         /*
2163                 NOTE: Lighting and object adding shouldn't really be here, but
2164                 lighting is a bit tricky to move properly to makeBlock.
2165                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2166                       - There needs to be some way for makeBlock to report back if
2167                             the lighting update is going further down because of the
2168                                 new block blocking light
2169         */
2170
2171         /*
2172                 Update lighting
2173                 NOTE: This takes ~60ms, TODO: Investigate why
2174         */
2175         {
2176                 TimeTaker t("finishBlockMake lighting update");
2177
2178                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2179 #if 1
2180                 // Center block
2181                 lighting_update_blocks.insert(block->getPos(), block);
2182
2183                 /*{
2184                         s16 x = 0;
2185                         s16 z = 0;
2186                         v3s16 p = block->getPos()+v3s16(x,1,z);
2187                         lighting_update_blocks[p] = getBlockNoCreateNoEx(p);
2188                 }*/
2189 #endif
2190 #if 0
2191                 // All modified blocks
2192                 // NOTE: Should this be done? If this is not done, then the lighting
2193                 // of the others will be updated in a different place, one by one, i
2194                 // think... or they might not? Well, at least they are left marked as
2195                 // "lighting expired"; it seems that is not handled at all anywhere,
2196                 // so enabling this will slow it down A LOT because otherwise it
2197                 // would not do this at all. This causes the black trees.
2198                 for(core::map<v3s16, MapBlock*>::Iterator
2199                                 i = changed_blocks.getIterator();
2200                                 i.atEnd() == false; i++)
2201                 {
2202                         lighting_update_blocks.insert(i.getNode()->getKey(),
2203                                         i.getNode()->getValue());
2204                 }
2205                 /*// Also force-add all the upmost blocks for proper sunlight
2206                 for(s16 x=-1; x<=1; x++)
2207                 for(s16 z=-1; z<=1; z++)
2208                 {
2209                         v3s16 p = block->getPos()+v3s16(x,1,z);
2210                         lighting_update_blocks[p] = getBlockNoCreateNoEx(p);
2211                 }*/
2212 #endif
2213                 updateLighting(lighting_update_blocks, changed_blocks);
2214
2215                 /*
2216                         Set lighting to non-expired state in all of them.
2217                         This is cheating, but it is not fast enough if all of them
2218                         would actually be updated.
2219                 */
2220                 for(s16 x=-1; x<=1; x++)
2221                 for(s16 y=-1; y<=1; y++)
2222                 for(s16 z=-1; z<=1; z++)
2223                 {
2224                         v3s16 p = block->getPos()+v3s16(x,y,z);
2225                         getBlockNoCreateNoEx(p)->setLightingExpired(false);
2226                 }
2227
2228                 if(enable_mapgen_debug_info == false)
2229                         t.stop(true); // Hide output
2230         }
2231
2232         /*
2233                 Add random objects to block
2234         */
2235         mapgen::add_random_objects(block);
2236
2237         /*
2238                 Go through changed blocks
2239         */
2240         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2241                         i.atEnd() == false; i++)
2242         {
2243                 MapBlock *block = i.getNode()->getValue();
2244                 assert(block);
2245                 /*
2246                         Update day/night difference cache of the MapBlocks
2247                 */
2248                 block->updateDayNightDiff();
2249                 /*
2250                         Set block as modified
2251                 */
2252                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2253         }
2254
2255         /*
2256                 Set central block as generated
2257         */
2258         block->setGenerated(true);
2259
2260         /*
2261                 Save changed parts of map
2262                 NOTE: Will be saved later.
2263         */
2264         //save(true);
2265
2266         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2267                         <<blockpos.Z<<")"<<std::endl;*/
2268 #if 0
2269         if(enable_mapgen_debug_info)
2270         {
2271                 /*
2272                         Analyze resulting blocks
2273                 */
2274                 for(s16 x=-1; x<=1; x++)
2275                 for(s16 y=-1; y<=1; y++)
2276                 for(s16 z=-1; z<=1; z++)
2277                 {
2278                         v3s16 p = block->getPos()+v3s16(x,y,z);
2279                         MapBlock *block = getBlockNoCreateNoEx(p);
2280                         char spos[20];
2281                         snprintf(spos, 20, "(%2d,%2d,%2d)", x, y, z);
2282                         dstream<<"Generated "<<spos<<": "
2283                                         <<analyze_block(block)<<std::endl;
2284                 }
2285         }
2286 #endif
2287
2288         return block;
2289 }
2290
2291 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2292 {
2293         DSTACKF("%s: p2d=(%d,%d)",
2294                         __FUNCTION_NAME,
2295                         p2d.X, p2d.Y);
2296
2297         /*
2298                 Check if it exists already in memory
2299         */
2300         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2301         if(sector != NULL)
2302                 return sector;
2303
2304         /*
2305                 Try to load it from disk (with blocks)
2306         */
2307         //if(loadSectorFull(p2d) == true)
2308
2309         /*
2310                 Try to load metadata from disk
2311         */
2312         if(loadSectorMeta(p2d) == true)
2313         {
2314                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2315                 if(sector == NULL)
2316                 {
2317                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2318                         throw InvalidPositionException("");
2319                 }
2320                 return sector;
2321         }
2322
2323         /*
2324                 Do not create over-limit
2325         */
2326         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2327         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2328         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2329         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2330                 throw InvalidPositionException("createSector(): pos. over limit");
2331
2332         /*
2333                 Generate blank sector
2334         */
2335
2336         sector = new ServerMapSector(this, p2d);
2337
2338         // Sector position on map in nodes
2339         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2340
2341         /*
2342                 Insert to container
2343         */
2344         m_sectors.insert(p2d, sector);
2345
2346         return sector;
2347 }
2348
2349 /*
2350         This is a quick-hand function for calling makeBlock().
2351 */
2352 MapBlock * ServerMap::generateBlock(
2353                 v3s16 p,
2354                 core::map<v3s16, MapBlock*> &modified_blocks
2355 )
2356 {
2357         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2358
2359         /*dstream<<"generateBlock(): "
2360                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2361                         <<std::endl;*/
2362
2363         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2364
2365         TimeTaker timer("generateBlock");
2366
2367         //MapBlock *block = original_dummy;
2368
2369         v2s16 p2d(p.X, p.Z);
2370         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2371
2372         /*
2373                 Do not generate over-limit
2374         */
2375         if(blockpos_over_limit(p))
2376         {
2377                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2378                 throw InvalidPositionException("generateBlock(): pos. over limit");
2379         }
2380
2381         /*
2382                 Create block make data
2383         */
2384         mapgen::BlockMakeData data;
2385         initBlockMake(&data, p);
2386
2387         /*
2388                 Generate block
2389         */
2390         {
2391                 TimeTaker t("mapgen::make_block()");
2392                 mapgen::make_block(&data);
2393
2394                 if(enable_mapgen_debug_info == false)
2395                         t.stop(true); // Hide output
2396         }
2397
2398         /*
2399                 Blit data back on map, update lighting, add mobs and whatever this does
2400         */
2401         finishBlockMake(&data, modified_blocks);
2402
2403         /*
2404                 Get central block
2405         */
2406         MapBlock *block = getBlockNoCreateNoEx(p);
2407
2408 #if 0
2409         /*
2410                 Check result
2411         */
2412         if(block)
2413         {
2414                 bool erroneus_content = false;
2415                 for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2416                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2417                 for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2418                 {
2419                         v3s16 p(x0,y0,z0);
2420                         MapNode n = block->getNode(p);
2421                         if(n.getContent() == CONTENT_IGNORE)
2422                         {
2423                                 dstream<<"CONTENT_IGNORE at "
2424                                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2425                                                 <<std::endl;
2426                                 erroneus_content = true;
2427                                 assert(0);
2428                         }
2429                 }
2430                 if(erroneus_content)
2431                 {
2432                         assert(0);
2433                 }
2434         }
2435 #endif
2436
2437 #if 0
2438         /*
2439                 Generate a completely empty block
2440         */
2441         if(block)
2442         {
2443                 for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2444                 for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2445                 {
2446                         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2447                         {
2448                                 MapNode n;
2449                                 if(y0%2==0)
2450                                         n.setContent(CONTENT_AIR);
2451                                 else
2452                                         n.setContent(CONTENT_STONE);
2453                                 block->setNode(v3s16(x0,y0,z0), n);
2454                         }
2455                 }
2456         }
2457 #endif
2458
2459         if(enable_mapgen_debug_info == false)
2460                 timer.stop(true); // Hide output
2461
2462         return block;
2463 }
2464
2465 MapBlock * ServerMap::createBlock(v3s16 p)
2466 {
2467         DSTACKF("%s: p=(%d,%d,%d)",
2468                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2469
2470         /*
2471                 Do not create over-limit
2472         */
2473         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2474         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2475         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2476         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2477         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2478         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2479                 throw InvalidPositionException("createBlock(): pos. over limit");
2480
2481         v2s16 p2d(p.X, p.Z);
2482         s16 block_y = p.Y;
2483         /*
2484                 This will create or load a sector if not found in memory.
2485                 If block exists on disk, it will be loaded.
2486
2487                 NOTE: On old save formats, this will be slow, as it generates
2488                       lighting on blocks for them.
2489         */
2490         ServerMapSector *sector;
2491         try{
2492                 sector = (ServerMapSector*)createSector(p2d);
2493                 assert(sector->getId() == MAPSECTOR_SERVER);
2494         }
2495         catch(InvalidPositionException &e)
2496         {
2497                 dstream<<"createBlock: createSector() failed"<<std::endl;
2498                 throw e;
2499         }
2500         /*
2501                 NOTE: This should not be done, or at least the exception
2502                 should not be passed on as std::exception, because it
2503                 won't be catched at all.
2504         */
2505         /*catch(std::exception &e)
2506         {
2507                 dstream<<"createBlock: createSector() failed: "
2508                                 <<e.what()<<std::endl;
2509                 throw e;
2510         }*/
2511
2512         /*
2513                 Try to get a block from the sector
2514         */
2515
2516         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2517         if(block)
2518         {
2519                 if(block->isDummy())
2520                         block->unDummify();
2521                 return block;
2522         }
2523         // Create blank
2524         block = sector->createBlankBlock(block_y);
2525         return block;
2526 }
2527
2528 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2529 {
2530         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2531                         __FUNCTION_NAME,
2532                         p.X, p.Y, p.Z, allow_generate);
2533
2534         {
2535                 MapBlock *block = getBlockNoCreateNoEx(p);
2536                 if(block && block->isDummy() == false)
2537                         return block;
2538         }
2539
2540         {
2541                 MapBlock *block = loadBlock(p);
2542                 if(block)
2543                         return block;
2544         }
2545
2546         if(allow_generate)
2547         {
2548                 core::map<v3s16, MapBlock*> modified_blocks;
2549                 MapBlock *block = generateBlock(p, modified_blocks);
2550                 if(block)
2551                 {
2552                         MapEditEvent event;
2553                         event.type = MEET_OTHER;
2554                         event.p = p;
2555
2556                         // Copy modified_blocks to event
2557                         for(core::map<v3s16, MapBlock*>::Iterator
2558                                         i = modified_blocks.getIterator();
2559                                         i.atEnd()==false; i++)
2560                         {
2561                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2562                         }
2563
2564                         // Queue event
2565                         dispatchEvent(&event);
2566
2567                         return block;
2568                 }
2569         }
2570
2571         return NULL;
2572 }
2573
2574 #if 0
2575         /*
2576                 Do not generate over-limit
2577         */
2578         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2579         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2580         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2581         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2582         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2583         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2584                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2585
2586         v2s16 p2d(p.X, p.Z);
2587         s16 block_y = p.Y;
2588         /*
2589                 This will create or load a sector if not found in memory.
2590                 If block exists on disk, it will be loaded.
2591         */
2592         ServerMapSector *sector;
2593         try{
2594                 sector = createSector(p2d);
2595                 //sector = emergeSector(p2d, changed_blocks);
2596         }
2597         catch(InvalidPositionException &e)
2598         {
2599                 dstream<<"emergeBlock: createSector() failed: "
2600                                 <<e.what()<<std::endl;
2601                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2602                                 <<std::endl
2603                                 <<"You could try to delete it."<<std::endl;
2604                 throw e;
2605         }
2606         catch(VersionMismatchException &e)
2607         {
2608                 dstream<<"emergeBlock: createSector() failed: "
2609                                 <<e.what()<<std::endl;
2610                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2611                                 <<std::endl
2612                                 <<"You could try to delete it."<<std::endl;
2613                 throw e;
2614         }
2615
2616         /*
2617                 Try to get a block from the sector
2618         */
2619
2620         bool does_not_exist = false;
2621         bool lighting_expired = false;
2622         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2623
2624         // If not found, try loading from disk
2625         if(block == NULL)
2626         {
2627                 block = loadBlock(p);
2628         }
2629
2630         // Handle result
2631         if(block == NULL)
2632         {
2633                 does_not_exist = true;
2634         }
2635         else if(block->isDummy() == true)
2636         {
2637                 does_not_exist = true;
2638         }
2639         else if(block->getLightingExpired())
2640         {
2641                 lighting_expired = true;
2642         }
2643         else
2644         {
2645                 // Valid block
2646                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2647                 return block;
2648         }
2649
2650         /*
2651                 If block was not found on disk and not going to generate a
2652                 new one, make sure there is a dummy block in place.
2653         */
2654         if(only_from_disk && (does_not_exist || lighting_expired))
2655         {
2656                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2657
2658                 if(block == NULL)
2659                 {
2660                         // Create dummy block
2661                         block = new MapBlock(this, p, true);
2662
2663                         // Add block to sector
2664                         sector->insertBlock(block);
2665                 }
2666                 // Done.
2667                 return block;
2668         }
2669
2670         //dstream<<"Not found on disk, generating."<<std::endl;
2671         // 0ms
2672         //TimeTaker("emergeBlock() generate");
2673
2674         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2675
2676         /*
2677                 If the block doesn't exist, generate the block.
2678         */
2679         if(does_not_exist)
2680         {
2681                 block = generateBlock(p, block, sector, changed_blocks,
2682                                 lighting_invalidated_blocks);
2683         }
2684
2685         if(lighting_expired)
2686         {
2687                 lighting_invalidated_blocks.insert(p, block);
2688         }
2689
2690 #if 0
2691         /*
2692                 Initially update sunlight
2693         */
2694         {
2695                 core::map<v3s16, bool> light_sources;
2696                 bool black_air_left = false;
2697                 bool bottom_invalid =
2698                                 block->propagateSunlight(light_sources, true,
2699                                 &black_air_left);
2700
2701                 // If sunlight didn't reach everywhere and part of block is
2702                 // above ground, lighting has to be properly updated
2703                 //if(black_air_left && some_part_underground)
2704                 if(black_air_left)
2705                 {
2706                         lighting_invalidated_blocks[block->getPos()] = block;
2707                 }
2708
2709                 if(bottom_invalid)
2710                 {
2711                         lighting_invalidated_blocks[block->getPos()] = block;
2712                 }
2713         }
2714 #endif
2715
2716         return block;
2717 }
2718 #endif
2719
2720 s16 ServerMap::findGroundLevel(v2s16 p2d)
2721 {
2722 #if 0
2723         /*
2724                 Uh, just do something random...
2725         */
2726         // Find existing map from top to down
2727         s16 max=63;
2728         s16 min=-64;
2729         v3s16 p(p2d.X, max, p2d.Y);
2730         for(; p.Y>min; p.Y--)
2731         {
2732                 MapNode n = getNodeNoEx(p);
2733                 if(n.getContent() != CONTENT_IGNORE)
2734                         break;
2735         }
2736         if(p.Y == min)
2737                 goto plan_b;
2738         // If this node is not air, go to plan b
2739         if(getNodeNoEx(p).getContent() != CONTENT_AIR)
2740                 goto plan_b;
2741         // Search existing walkable and return it
2742         for(; p.Y>min; p.Y--)
2743         {
2744                 MapNode n = getNodeNoEx(p);
2745                 if(content_walkable(n.d) && n.getContent() != CONTENT_IGNORE)
2746                         return p.Y;
2747         }
2748
2749         // Move to plan b
2750 plan_b:
2751 #endif
2752
2753         /*
2754                 Determine from map generator noise functions
2755         */
2756
2757         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2758         return level;
2759
2760         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2761         //return (s16)level;
2762 }
2763
2764 void ServerMap::createDirs(std::string path)
2765 {
2766         if(fs::CreateAllDirs(path) == false)
2767         {
2768                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2769                                 <<"\""<<path<<"\""<<std::endl;
2770                 throw BaseException("ServerMap failed to create directory");
2771         }
2772 }
2773
2774 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2775 {
2776         char cc[9];
2777         switch(layout)
2778         {
2779                 case 1:
2780                         snprintf(cc, 9, "%.4x%.4x",
2781                                 (unsigned int)pos.X&0xffff,
2782                                 (unsigned int)pos.Y&0xffff);
2783
2784                         return m_savedir + "/sectors/" + cc;
2785                 case 2:
2786                         snprintf(cc, 9, "%.3x/%.3x",
2787                                 (unsigned int)pos.X&0xfff,
2788                                 (unsigned int)pos.Y&0xfff);
2789
2790                         return m_savedir + "/sectors2/" + cc;
2791                 default:
2792                         assert(false);
2793         }
2794 }
2795
2796 v2s16 ServerMap::getSectorPos(std::string dirname)
2797 {
2798         unsigned int x, y;
2799         int r;
2800         size_t spos = dirname.rfind('/') + 1;
2801         assert(spos != std::string::npos);
2802         if(dirname.size() - spos == 8)
2803         {
2804                 // Old layout
2805                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2806         }
2807         else if(dirname.size() - spos == 3)
2808         {
2809                 // New layout
2810                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2811                 // Sign-extend the 12 bit values up to 16 bits...
2812                 if(x&0x800) x|=0xF000;
2813                 if(y&0x800) y|=0xF000;
2814         }
2815         else
2816         {
2817                 assert(false);
2818         }
2819         assert(r == 2);
2820         v2s16 pos((s16)x, (s16)y);
2821         return pos;
2822 }
2823
2824 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2825 {
2826         v2s16 p2d = getSectorPos(sectordir);
2827
2828         if(blockfile.size() != 4){
2829                 throw InvalidFilenameException("Invalid block filename");
2830         }
2831         unsigned int y;
2832         int r = sscanf(blockfile.c_str(), "%4x", &y);
2833         if(r != 1)
2834                 throw InvalidFilenameException("Invalid block filename");
2835         return v3s16(p2d.X, y, p2d.Y);
2836 }
2837
2838 std::string ServerMap::getBlockFilename(v3s16 p)
2839 {
2840         char cc[5];
2841         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2842         return cc;
2843 }
2844
2845 void ServerMap::save(bool only_changed)
2846 {
2847         DSTACK(__FUNCTION_NAME);
2848         if(m_map_saving_enabled == false)
2849         {
2850                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2851                 return;
2852         }
2853
2854         if(only_changed == false)
2855                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2856                                 <<std::endl;
2857
2858         if(only_changed == false || m_map_metadata_changed)
2859         {
2860                 saveMapMeta();
2861         }
2862
2863         u32 sector_meta_count = 0;
2864         u32 block_count = 0;
2865         u32 block_count_all = 0; // Number of blocks in memory
2866
2867         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2868         for(; i.atEnd() == false; i++)
2869         {
2870                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2871                 assert(sector->getId() == MAPSECTOR_SERVER);
2872
2873                 if(sector->differs_from_disk || only_changed == false)
2874                 {
2875                         saveSectorMeta(sector);
2876                         sector_meta_count++;
2877                 }
2878                 core::list<MapBlock*> blocks;
2879                 sector->getBlocks(blocks);
2880                 core::list<MapBlock*>::Iterator j;
2881                 for(j=blocks.begin(); j!=blocks.end(); j++)
2882                 {
2883                         MapBlock *block = *j;
2884
2885                         block_count_all++;
2886
2887                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2888                                         || only_changed == false)
2889                         {
2890                                 saveBlock(block);
2891                                 block_count++;
2892
2893                                 /*dstream<<"ServerMap: Written block ("
2894                                                 <<block->getPos().X<<","
2895                                                 <<block->getPos().Y<<","
2896                                                 <<block->getPos().Z<<")"
2897                                                 <<std::endl;*/
2898                         }
2899                 }
2900         }
2901
2902         /*
2903                 Only print if something happened or saved whole map
2904         */
2905         if(only_changed == false || sector_meta_count != 0
2906                         || block_count != 0)
2907         {
2908                 dstream<<DTIME<<"ServerMap: Written: "
2909                                 <<sector_meta_count<<" sector metadata files, "
2910                                 <<block_count<<" block files"
2911                                 <<", "<<block_count_all<<" blocks in memory."
2912                                 <<std::endl;
2913         }
2914 }
2915
2916 void ServerMap::saveMapMeta()
2917 {
2918         DSTACK(__FUNCTION_NAME);
2919
2920         dstream<<"INFO: ServerMap::saveMapMeta(): "
2921                         <<"seed="<<m_seed
2922                         <<std::endl;
2923
2924         createDirs(m_savedir);
2925
2926         std::string fullpath = m_savedir + "/map_meta.txt";
2927         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2928         if(os.good() == false)
2929         {
2930                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2931                                 <<"could not open"<<fullpath<<std::endl;
2932                 throw FileNotGoodException("Cannot open chunk metadata");
2933         }
2934
2935         Settings params;
2936         params.setU64("seed", m_seed);
2937
2938         params.writeLines(os);
2939
2940         os<<"[end_of_params]\n";
2941
2942         m_map_metadata_changed = false;
2943 }
2944
2945 void ServerMap::loadMapMeta()
2946 {
2947         DSTACK(__FUNCTION_NAME);
2948
2949         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2950                         <<std::endl;
2951
2952         std::string fullpath = m_savedir + "/map_meta.txt";
2953         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2954         if(is.good() == false)
2955         {
2956                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2957                                 <<"could not open"<<fullpath<<std::endl;
2958                 throw FileNotGoodException("Cannot open map metadata");
2959         }
2960
2961         Settings params;
2962
2963         for(;;)
2964         {
2965                 if(is.eof())
2966                         throw SerializationError
2967                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2968                 std::string line;
2969                 std::getline(is, line);
2970                 std::string trimmedline = trim(line);
2971                 if(trimmedline == "[end_of_params]")
2972                         break;
2973                 params.parseConfigLine(line);
2974         }
2975
2976         m_seed = params.getU64("seed");
2977
2978         dstream<<"INFO: ServerMap::loadMapMeta(): "
2979                         <<"seed="<<m_seed
2980                         <<std::endl;
2981 }
2982
2983 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2984 {
2985         DSTACK(__FUNCTION_NAME);
2986         // Format used for writing
2987         u8 version = SER_FMT_VER_HIGHEST;
2988         // Get destination
2989         v2s16 pos = sector->getPos();
2990         std::string dir = getSectorDir(pos);
2991         createDirs(dir);
2992
2993         std::string fullpath = dir + "/meta";
2994         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2995         if(o.good() == false)
2996                 throw FileNotGoodException("Cannot open sector metafile");
2997
2998         sector->serialize(o, version);
2999
3000         sector->differs_from_disk = false;
3001 }
3002
3003 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
3004 {
3005         DSTACK(__FUNCTION_NAME);
3006         // Get destination
3007         v2s16 p2d = getSectorPos(sectordir);
3008
3009         ServerMapSector *sector = NULL;
3010
3011         std::string fullpath = sectordir + "/meta";
3012         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3013         if(is.good() == false)
3014         {
3015                 // If the directory exists anyway, it probably is in some old
3016                 // format. Just go ahead and create the sector.
3017                 if(fs::PathExists(sectordir))
3018                 {
3019                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
3020                                         <<fullpath<<" doesn't exist but directory does."
3021                                         <<" Continuing with a sector with no metadata."
3022                                         <<std::endl;*/
3023                         sector = new ServerMapSector(this, p2d);
3024                         m_sectors.insert(p2d, sector);
3025                 }
3026                 else
3027                 {
3028                         throw FileNotGoodException("Cannot open sector metafile");
3029                 }
3030         }
3031         else
3032         {
3033                 sector = ServerMapSector::deSerialize
3034                                 (is, this, p2d, m_sectors);
3035                 if(save_after_load)
3036                         saveSectorMeta(sector);
3037         }
3038
3039         sector->differs_from_disk = false;
3040
3041         return sector;
3042 }
3043
3044 bool ServerMap::loadSectorMeta(v2s16 p2d)
3045 {
3046         DSTACK(__FUNCTION_NAME);
3047
3048         MapSector *sector = NULL;
3049
3050         // The directory layout we're going to load from.
3051         //  1 - original sectors/xxxxzzzz/
3052         //  2 - new sectors2/xxx/zzz/
3053         //  If we load from anything but the latest structure, we will
3054         //  immediately save to the new one, and remove the old.
3055         int loadlayout = 1;
3056         std::string sectordir1 = getSectorDir(p2d, 1);
3057         std::string sectordir;
3058         if(fs::PathExists(sectordir1))
3059         {
3060                 sectordir = sectordir1;
3061         }
3062         else
3063         {
3064                 loadlayout = 2;
3065                 sectordir = getSectorDir(p2d, 2);
3066         }
3067
3068         try{
3069                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3070         }
3071         catch(InvalidFilenameException &e)
3072         {
3073                 return false;
3074         }
3075         catch(FileNotGoodException &e)
3076         {
3077                 return false;
3078         }
3079         catch(std::exception &e)
3080         {
3081                 return false;
3082         }
3083
3084         return true;
3085 }
3086
3087 #if 0
3088 bool ServerMap::loadSectorFull(v2s16 p2d)
3089 {
3090         DSTACK(__FUNCTION_NAME);
3091
3092         MapSector *sector = NULL;
3093
3094         // The directory layout we're going to load from.
3095         //  1 - original sectors/xxxxzzzz/
3096         //  2 - new sectors2/xxx/zzz/
3097         //  If we load from anything but the latest structure, we will
3098         //  immediately save to the new one, and remove the old.
3099         int loadlayout = 1;
3100         std::string sectordir1 = getSectorDir(p2d, 1);
3101         std::string sectordir;
3102         if(fs::PathExists(sectordir1))
3103         {
3104                 sectordir = sectordir1;
3105         }
3106         else
3107         {
3108                 loadlayout = 2;
3109                 sectordir = getSectorDir(p2d, 2);
3110         }
3111
3112         try{
3113                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3114         }
3115         catch(InvalidFilenameException &e)
3116         {
3117                 return false;
3118         }
3119         catch(FileNotGoodException &e)
3120         {
3121                 return false;
3122         }
3123         catch(std::exception &e)
3124         {
3125                 return false;
3126         }
3127
3128         /*
3129                 Load blocks
3130         */
3131         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3132                         (sectordir);
3133         std::vector<fs::DirListNode>::iterator i2;
3134         for(i2=list2.begin(); i2!=list2.end(); i2++)
3135         {
3136                 // We want files
3137                 if(i2->dir)
3138                         continue;
3139                 try{
3140                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3141                 }
3142                 catch(InvalidFilenameException &e)
3143                 {
3144                         // This catches unknown crap in directory
3145                 }
3146         }
3147
3148         if(loadlayout != 2)
3149         {
3150                 dstream<<"Sector converted to new layout - deleting "<<
3151                         sectordir1<<std::endl;
3152                 fs::RecursiveDelete(sectordir1);
3153         }
3154
3155         return true;
3156 }
3157 #endif
3158
3159 void ServerMap::saveBlock(MapBlock *block)
3160 {
3161         DSTACK(__FUNCTION_NAME);
3162         /*
3163                 Dummy blocks are not written
3164         */
3165         if(block->isDummy())
3166         {
3167                 /*v3s16 p = block->getPos();
3168                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3169                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3170                 return;
3171         }
3172
3173         // Format used for writing
3174         u8 version = SER_FMT_VER_HIGHEST;
3175         // Get destination
3176         v3s16 p3d = block->getPos();
3177
3178         v2s16 p2d(p3d.X, p3d.Z);
3179         std::string sectordir = getSectorDir(p2d);
3180
3181         createDirs(sectordir);
3182
3183         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3184         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3185         if(o.good() == false)
3186                 throw FileNotGoodException("Cannot open block data");
3187
3188         /*
3189                 [0] u8 serialization version
3190                 [1] data
3191         */
3192         o.write((char*)&version, 1);
3193
3194         // Write basic data
3195         block->serialize(o, version);
3196
3197         // Write extra data stored on disk
3198         block->serializeDiskExtra(o, version);
3199
3200         // We just wrote it to the disk so clear modified flag
3201         block->resetModified();
3202 }
3203
3204 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3205 {
3206         DSTACK(__FUNCTION_NAME);
3207
3208         std::string fullpath = sectordir+"/"+blockfile;
3209         try{
3210
3211                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3212                 if(is.good() == false)
3213                         throw FileNotGoodException("Cannot open block file");
3214
3215                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3216                 v2s16 p2d(p3d.X, p3d.Z);
3217
3218                 assert(sector->getPos() == p2d);
3219
3220                 u8 version = SER_FMT_VER_INVALID;
3221                 is.read((char*)&version, 1);
3222
3223                 if(is.fail())
3224                         throw SerializationError("ServerMap::loadBlock(): Failed"
3225                                         " to read MapBlock version");
3226
3227                 /*u32 block_size = MapBlock::serializedLength(version);
3228                 SharedBuffer<u8> data(block_size);
3229                 is.read((char*)*data, block_size);*/
3230
3231                 // This will always return a sector because we're the server
3232                 //MapSector *sector = emergeSector(p2d);
3233
3234                 MapBlock *block = NULL;
3235                 bool created_new = false;
3236                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3237                 if(block == NULL)
3238                 {
3239                         block = sector->createBlankBlockNoInsert(p3d.Y);
3240                         created_new = true;
3241                 }
3242
3243                 // Read basic data
3244                 block->deSerialize(is, version);
3245
3246                 // Read extra data stored on disk
3247                 block->deSerializeDiskExtra(is, version);
3248
3249                 // If it's a new block, insert it to the map
3250                 if(created_new)
3251                         sector->insertBlock(block);
3252
3253                 /*
3254                         Save blocks loaded in old format in new format
3255                 */
3256
3257                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3258                 {
3259                         saveBlock(block);
3260                 }
3261
3262                 // We just loaded it from the disk, so it's up-to-date.
3263                 block->resetModified();
3264
3265         }
3266         catch(SerializationError &e)
3267         {
3268                 dstream<<"WARNING: Invalid block data on disk "
3269                                 <<"fullpath="<<fullpath
3270                                 <<" (SerializationError). "
3271                                 <<"what()="<<e.what()
3272                                 <<std::endl;
3273                                 //" Ignoring. A new one will be generated.
3274                 assert(0);
3275
3276                 // TODO: Backup file; name is in fullpath.
3277         }
3278 }
3279
3280 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3281 {
3282         DSTACK(__FUNCTION_NAME);
3283
3284         v2s16 p2d(blockpos.X, blockpos.Z);
3285
3286         // The directory layout we're going to load from.
3287         //  1 - original sectors/xxxxzzzz/
3288         //  2 - new sectors2/xxx/zzz/
3289         //  If we load from anything but the latest structure, we will
3290         //  immediately save to the new one, and remove the old.
3291         int loadlayout = 1;
3292         std::string sectordir1 = getSectorDir(p2d, 1);
3293         std::string sectordir;
3294         if(fs::PathExists(sectordir1))
3295         {
3296                 sectordir = sectordir1;
3297         }
3298         else
3299         {
3300                 loadlayout = 2;
3301                 sectordir = getSectorDir(p2d, 2);
3302         }
3303
3304         /*
3305                 Make sure sector is loaded
3306         */
3307         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3308         if(sector == NULL)
3309         {
3310                 try{
3311                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3312                 }
3313                 catch(InvalidFilenameException &e)
3314                 {
3315                         return false;
3316                 }
3317                 catch(FileNotGoodException &e)
3318                 {
3319                         return false;
3320                 }
3321                 catch(std::exception &e)
3322                 {
3323                         return false;
3324                 }
3325         }
3326
3327         /*
3328                 Make sure file exists
3329         */
3330
3331         std::string blockfilename = getBlockFilename(blockpos);
3332         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3333                 return NULL;
3334
3335         /*
3336                 Load block
3337         */
3338         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3339         return getBlockNoCreateNoEx(blockpos);
3340 }
3341
3342 void ServerMap::PrintInfo(std::ostream &out)
3343 {
3344         out<<"ServerMap: ";
3345 }
3346
3347 #ifndef SERVER
3348
3349 /*
3350         ClientMap
3351 */
3352
3353 ClientMap::ClientMap(
3354                 Client *client,
3355                 MapDrawControl &control,
3356                 scene::ISceneNode* parent,
3357                 scene::ISceneManager* mgr,
3358                 s32 id
3359 ):
3360         Map(dout_client),
3361         scene::ISceneNode(parent, mgr, id),
3362         m_client(client),
3363         m_control(control),
3364         m_camera_position(0,0,0),
3365         m_camera_direction(0,0,1)
3366 {
3367         m_camera_mutex.Init();
3368         assert(m_camera_mutex.IsInitialized());
3369
3370         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3371                         BS*1000000,BS*1000000,BS*1000000);
3372 }
3373
3374 ClientMap::~ClientMap()
3375 {
3376         /*JMutexAutoLock lock(mesh_mutex);
3377
3378         if(mesh != NULL)
3379         {
3380                 mesh->drop();
3381                 mesh = NULL;
3382         }*/
3383 }
3384
3385 MapSector * ClientMap::emergeSector(v2s16 p2d)
3386 {
3387         DSTACK(__FUNCTION_NAME);
3388         // Check that it doesn't exist already
3389         try{
3390                 return getSectorNoGenerate(p2d);
3391         }
3392         catch(InvalidPositionException &e)
3393         {
3394         }
3395
3396         // Create a sector
3397         ClientMapSector *sector = new ClientMapSector(this, p2d);
3398
3399         {
3400                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3401                 m_sectors.insert(p2d, sector);
3402         }
3403
3404         return sector;
3405 }
3406
3407 #if 0
3408 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3409 {
3410         DSTACK(__FUNCTION_NAME);
3411         ClientMapSector *sector = NULL;
3412
3413         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3414
3415         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3416
3417         if(n != NULL)
3418         {
3419                 sector = (ClientMapSector*)n->getValue();
3420                 assert(sector->getId() == MAPSECTOR_CLIENT);
3421         }
3422         else
3423         {
3424                 sector = new ClientMapSector(this, p2d);
3425                 {
3426                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3427                         m_sectors.insert(p2d, sector);
3428                 }
3429         }
3430
3431         sector->deSerialize(is);
3432 }
3433 #endif
3434
3435 void ClientMap::OnRegisterSceneNode()
3436 {
3437         if(IsVisible)
3438         {
3439                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3440                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3441         }
3442
3443         ISceneNode::OnRegisterSceneNode();
3444 }
3445
3446 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3447 {
3448         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3449         DSTACK(__FUNCTION_NAME);
3450
3451         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3452
3453         /*
3454                 This is called two times per frame, reset on the non-transparent one
3455         */
3456         if(pass == scene::ESNRP_SOLID)
3457         {
3458                 m_last_drawn_sectors.clear();
3459         }
3460
3461         /*
3462                 Get time for measuring timeout.
3463
3464                 Measuring time is very useful for long delays when the
3465                 machine is swapping a lot.
3466         */
3467         int time1 = time(0);
3468
3469         //u32 daynight_ratio = m_client->getDayNightRatio();
3470
3471         m_camera_mutex.Lock();
3472         v3f camera_position = m_camera_position;
3473         v3f camera_direction = m_camera_direction;
3474         m_camera_mutex.Unlock();
3475
3476         /*
3477                 Get all blocks and draw all visible ones
3478         */
3479
3480         v3s16 cam_pos_nodes(
3481                         camera_position.X / BS,
3482                         camera_position.Y / BS,
3483                         camera_position.Z / BS);
3484
3485         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3486
3487         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3488         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3489
3490         // Take a fair amount as we will be dropping more out later
3491         v3s16 p_blocks_min(
3492                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3493                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3494                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3495         v3s16 p_blocks_max(
3496                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3497                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3498                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3499
3500         u32 vertex_count = 0;
3501
3502         // For limiting number of mesh updates per frame
3503         u32 mesh_update_count = 0;
3504
3505         u32 blocks_would_have_drawn = 0;
3506         u32 blocks_drawn = 0;
3507
3508         int timecheck_counter = 0;
3509         core::map<v2s16, MapSector*>::Iterator si;
3510         si = m_sectors.getIterator();
3511         for(; si.atEnd() == false; si++)
3512         {
3513                 {
3514                         timecheck_counter++;
3515                         if(timecheck_counter > 50)
3516                         {
3517                                 timecheck_counter = 0;
3518                                 int time2 = time(0);
3519                                 if(time2 > time1 + 4)
3520                                 {
3521                                         dstream<<"ClientMap::renderMap(): "
3522                                                 "Rendering takes ages, returning."
3523                                                 <<std::endl;
3524                                         return;
3525                                 }
3526                         }
3527                 }
3528
3529                 MapSector *sector = si.getNode()->getValue();
3530                 v2s16 sp = sector->getPos();
3531
3532                 if(m_control.range_all == false)
3533                 {
3534                         if(sp.X < p_blocks_min.X
3535                         || sp.X > p_blocks_max.X
3536                         || sp.Y < p_blocks_min.Z
3537                         || sp.Y > p_blocks_max.Z)
3538                                 continue;
3539                 }
3540
3541                 core::list< MapBlock * > sectorblocks;
3542                 sector->getBlocks(sectorblocks);
3543
3544                 /*
3545                         Draw blocks
3546                 */
3547
3548                 u32 sector_blocks_drawn = 0;
3549
3550                 core::list< MapBlock * >::Iterator i;
3551                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3552                 {
3553                         MapBlock *block = *i;
3554
3555                         /*
3556                                 Compare block position to camera position, skip
3557                                 if not seen on display
3558                         */
3559
3560                         float range = 100000 * BS;
3561                         if(m_control.range_all == false)
3562                                 range = m_control.wanted_range * BS;
3563
3564                         float d = 0.0;
3565                         if(isBlockInSight(block->getPos(), camera_position,
3566                                         camera_direction, range, &d) == false)
3567                         {
3568                                 continue;
3569                         }
3570
3571                         // Okay, this block will be drawn. Reset usage timer.
3572                         block->resetUsageTimer();
3573
3574                         // This is ugly (spherical distance limit?)
3575                         /*if(m_control.range_all == false &&
3576                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3577                                 continue;*/
3578
3579 #if 1
3580                         /*
3581                                 Update expired mesh (used for day/night change)
3582
3583                                 It doesn't work exactly like it should now with the
3584                                 tasked mesh update but whatever.
3585                         */
3586
3587                         bool mesh_expired = false;
3588
3589                         {
3590                                 JMutexAutoLock lock(block->mesh_mutex);
3591
3592                                 mesh_expired = block->getMeshExpired();
3593
3594                                 // Mesh has not been expired and there is no mesh:
3595                                 // block has no content
3596                                 if(block->mesh == NULL && mesh_expired == false)
3597                                         continue;
3598                         }
3599
3600                         f32 faraway = BS*50;
3601                         //f32 faraway = m_control.wanted_range * BS;
3602
3603                         /*
3604                                 This has to be done with the mesh_mutex unlocked
3605                         */
3606                         // Pretty random but this should work somewhat nicely
3607                         if(mesh_expired && (
3608                                         (mesh_update_count < 3
3609                                                 && (d < faraway || mesh_update_count < 2)
3610                                         )
3611                                         ||
3612                                         (m_control.range_all && mesh_update_count < 20)
3613                                 )
3614                         )
3615                         /*if(mesh_expired && mesh_update_count < 6
3616                                         && (d < faraway || mesh_update_count < 3))*/
3617                         {
3618                                 mesh_update_count++;
3619
3620                                 // Mesh has been expired: generate new mesh
3621                                 //block->updateMesh(daynight_ratio);
3622                                 m_client->addUpdateMeshTask(block->getPos());
3623
3624                                 mesh_expired = false;
3625                         }
3626
3627 #endif
3628                         /*
3629                                 Draw the faces of the block
3630                         */
3631                         {
3632                                 JMutexAutoLock lock(block->mesh_mutex);
3633
3634                                 scene::SMesh *mesh = block->mesh;
3635
3636                                 if(mesh == NULL)
3637                                         continue;
3638
3639                                 blocks_would_have_drawn++;
3640                                 if(blocks_drawn >= m_control.wanted_max_blocks
3641                                                 && m_control.range_all == false
3642                                                 && d > m_control.wanted_min_range * BS)
3643                                         continue;
3644
3645                                 blocks_drawn++;
3646                                 sector_blocks_drawn++;
3647
3648                                 u32 c = mesh->getMeshBufferCount();
3649
3650                                 for(u32 i=0; i<c; i++)
3651                                 {
3652                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3653                                         const video::SMaterial& material = buf->getMaterial();
3654                                         video::IMaterialRenderer* rnd =
3655                                                         driver->getMaterialRenderer(material.MaterialType);
3656                                         bool transparent = (rnd && rnd->isTransparent());
3657                                         // Render transparent on transparent pass and likewise.
3658                                         if(transparent == is_transparent_pass)
3659                                         {
3660                                                 /*
3661                                                         This *shouldn't* hurt too much because Irrlicht
3662                                                         doesn't change opengl textures if the old
3663                                                         material is set again.
3664                                                 */
3665                                                 driver->setMaterial(buf->getMaterial());
3666                                                 driver->drawMeshBuffer(buf);
3667                                                 vertex_count += buf->getVertexCount();
3668                                         }
3669                                 }
3670                         }
3671                 } // foreach sectorblocks
3672
3673                 if(sector_blocks_drawn != 0)
3674                 {
3675                         m_last_drawn_sectors[sp] = true;
3676                 }
3677         }
3678
3679         m_control.blocks_drawn = blocks_drawn;
3680         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3681
3682         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3683                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3684 }
3685
3686 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3687                 core::map<v3s16, MapBlock*> *affected_blocks)
3688 {
3689         bool changed = false;
3690         /*
3691                 Add it to all blocks touching it
3692         */
3693         v3s16 dirs[7] = {
3694                 v3s16(0,0,0), // this
3695                 v3s16(0,0,1), // back
3696                 v3s16(0,1,0), // top
3697                 v3s16(1,0,0), // right
3698                 v3s16(0,0,-1), // front
3699                 v3s16(0,-1,0), // bottom
3700                 v3s16(-1,0,0), // left
3701         };
3702         for(u16 i=0; i<7; i++)
3703         {
3704                 v3s16 p2 = p + dirs[i];
3705                 // Block position of neighbor (or requested) node
3706                 v3s16 blockpos = getNodeBlockPos(p2);
3707                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3708                 if(blockref == NULL)
3709                         continue;
3710                 // Relative position of requested node
3711                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3712                 if(blockref->setTempMod(relpos, mod))
3713                 {
3714                         changed = true;
3715                 }
3716         }
3717         if(changed && affected_blocks!=NULL)
3718         {
3719                 for(u16 i=0; i<7; i++)
3720                 {
3721                         v3s16 p2 = p + dirs[i];
3722                         // Block position of neighbor (or requested) node
3723                         v3s16 blockpos = getNodeBlockPos(p2);
3724                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3725                         if(blockref == NULL)
3726                                 continue;
3727                         affected_blocks->insert(blockpos, blockref);
3728                 }
3729         }
3730         return changed;
3731 }
3732
3733 bool ClientMap::clearTempMod(v3s16 p,
3734                 core::map<v3s16, MapBlock*> *affected_blocks)
3735 {
3736         bool changed = false;
3737         v3s16 dirs[7] = {
3738                 v3s16(0,0,0), // this
3739                 v3s16(0,0,1), // back
3740                 v3s16(0,1,0), // top
3741                 v3s16(1,0,0), // right
3742                 v3s16(0,0,-1), // front
3743                 v3s16(0,-1,0), // bottom
3744                 v3s16(-1,0,0), // left
3745         };
3746         for(u16 i=0; i<7; i++)
3747         {
3748                 v3s16 p2 = p + dirs[i];
3749                 // Block position of neighbor (or requested) node
3750                 v3s16 blockpos = getNodeBlockPos(p2);
3751                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3752                 if(blockref == NULL)
3753                         continue;
3754                 // Relative position of requested node
3755                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3756                 if(blockref->clearTempMod(relpos))
3757                 {
3758                         changed = true;
3759                 }
3760         }
3761         if(changed && affected_blocks!=NULL)
3762         {
3763                 for(u16 i=0; i<7; i++)
3764                 {
3765                         v3s16 p2 = p + dirs[i];
3766                         // Block position of neighbor (or requested) node
3767                         v3s16 blockpos = getNodeBlockPos(p2);
3768                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3769                         if(blockref == NULL)
3770                                 continue;
3771                         affected_blocks->insert(blockpos, blockref);
3772                 }
3773         }
3774         return changed;
3775 }
3776
3777 void ClientMap::expireMeshes(bool only_daynight_diffed)
3778 {
3779         TimeTaker timer("expireMeshes()");
3780
3781         core::map<v2s16, MapSector*>::Iterator si;
3782         si = m_sectors.getIterator();
3783         for(; si.atEnd() == false; si++)
3784         {
3785                 MapSector *sector = si.getNode()->getValue();
3786
3787                 core::list< MapBlock * > sectorblocks;
3788                 sector->getBlocks(sectorblocks);
3789
3790                 core::list< MapBlock * >::Iterator i;
3791                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3792                 {
3793                         MapBlock *block = *i;
3794
3795                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3796                         {
3797                                 continue;
3798                         }
3799
3800                         {
3801                                 JMutexAutoLock lock(block->mesh_mutex);
3802                                 if(block->mesh != NULL)
3803                                 {
3804                                         /*block->mesh->drop();
3805                                         block->mesh = NULL;*/
3806                                         block->setMeshExpired(true);
3807                                 }
3808                         }
3809                 }
3810         }
3811 }
3812
3813 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3814 {
3815         assert(mapType() == MAPTYPE_CLIENT);
3816
3817         try{
3818                 v3s16 p = blockpos + v3s16(0,0,0);
3819                 MapBlock *b = getBlockNoCreate(p);
3820                 b->updateMesh(daynight_ratio);
3821                 //b->setMeshExpired(true);
3822         }
3823         catch(InvalidPositionException &e){}
3824         // Leading edge
3825         try{
3826                 v3s16 p = blockpos + v3s16(-1,0,0);
3827                 MapBlock *b = getBlockNoCreate(p);
3828                 b->updateMesh(daynight_ratio);
3829                 //b->setMeshExpired(true);
3830         }
3831         catch(InvalidPositionException &e){}
3832         try{
3833                 v3s16 p = blockpos + v3s16(0,-1,0);
3834                 MapBlock *b = getBlockNoCreate(p);
3835                 b->updateMesh(daynight_ratio);
3836                 //b->setMeshExpired(true);
3837         }
3838         catch(InvalidPositionException &e){}
3839         try{
3840                 v3s16 p = blockpos + v3s16(0,0,-1);
3841                 MapBlock *b = getBlockNoCreate(p);
3842                 b->updateMesh(daynight_ratio);
3843                 //b->setMeshExpired(true);
3844         }
3845         catch(InvalidPositionException &e){}
3846 }
3847
3848 #if 0
3849 /*
3850         Update mesh of block in which the node is, and if the node is at the
3851         leading edge, update the appropriate leading blocks too.
3852 */
3853 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3854 {
3855         v3s16 dirs[4] = {
3856                 v3s16(0,0,0),
3857                 v3s16(-1,0,0),
3858                 v3s16(0,-1,0),
3859                 v3s16(0,0,-1),
3860         };
3861         v3s16 blockposes[4];
3862         for(u32 i=0; i<4; i++)
3863         {
3864                 v3s16 np = nodepos + dirs[i];
3865                 blockposes[i] = getNodeBlockPos(np);
3866                 // Don't update mesh of block if it has been done already
3867                 bool already_updated = false;
3868                 for(u32 j=0; j<i; j++)
3869                 {
3870                         if(blockposes[j] == blockposes[i])
3871                         {
3872                                 already_updated = true;
3873                                 break;
3874                         }
3875                 }
3876                 if(already_updated)
3877                         continue;
3878                 // Update mesh
3879                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3880                 b->updateMesh(daynight_ratio);
3881         }
3882 }
3883 #endif
3884
3885 void ClientMap::PrintInfo(std::ostream &out)
3886 {
3887         out<<"ClientMap: ";
3888 }
3889
3890 #endif // !SERVER
3891
3892 /*
3893         MapVoxelManipulator
3894 */
3895
3896 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3897 {
3898         m_map = map;
3899 }
3900
3901 MapVoxelManipulator::~MapVoxelManipulator()
3902 {
3903         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3904                         <<std::endl;*/
3905 }
3906
3907 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3908 {
3909         TimeTaker timer1("emerge", &emerge_time);
3910
3911         // Units of these are MapBlocks
3912         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3913         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3914
3915         VoxelArea block_area_nodes
3916                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3917
3918         addArea(block_area_nodes);
3919
3920         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3921         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3922         for(s32 x=p_min.X; x<=p_max.X; x++)
3923         {
3924                 v3s16 p(x,y,z);
3925                 core::map<v3s16, bool>::Node *n;
3926                 n = m_loaded_blocks.find(p);
3927                 if(n != NULL)
3928                         continue;
3929
3930                 bool block_data_inexistent = false;
3931                 try
3932                 {
3933                         TimeTaker timer1("emerge load", &emerge_load_time);
3934
3935                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3936                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3937                                         <<" wanted area: ";
3938                         a.print(dstream);
3939                         dstream<<std::endl;*/
3940
3941                         MapBlock *block = m_map->getBlockNoCreate(p);
3942                         if(block->isDummy())
3943                                 block_data_inexistent = true;
3944                         else
3945                                 block->copyTo(*this);
3946                 }
3947                 catch(InvalidPositionException &e)
3948                 {
3949                         block_data_inexistent = true;
3950                 }
3951
3952                 if(block_data_inexistent)
3953                 {
3954                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3955                         // Fill with VOXELFLAG_INEXISTENT
3956                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3957                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3958                         {
3959                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3960                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3961                         }
3962                 }
3963
3964                 m_loaded_blocks.insert(p, !block_data_inexistent);
3965         }
3966
3967         //dstream<<"emerge done"<<std::endl;
3968 }
3969
3970 /*
3971         SUGG: Add an option to only update eg. water and air nodes.
3972               This will make it interfere less with important stuff if
3973                   run on background.
3974 */
3975 void MapVoxelManipulator::blitBack
3976                 (core::map<v3s16, MapBlock*> & modified_blocks)
3977 {
3978         if(m_area.getExtent() == v3s16(0,0,0))
3979                 return;
3980
3981         //TimeTaker timer1("blitBack");
3982
3983         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3984                         <<m_loaded_blocks.size()<<std::endl;*/
3985
3986         /*
3987                 Initialize block cache
3988         */
3989         v3s16 blockpos_last;
3990         MapBlock *block = NULL;
3991         bool block_checked_in_modified = false;
3992
3993         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3994         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3995         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3996         {
3997                 v3s16 p(x,y,z);
3998
3999                 u8 f = m_flags[m_area.index(p)];
4000                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
4001                         continue;
4002
4003                 MapNode &n = m_data[m_area.index(p)];
4004
4005                 v3s16 blockpos = getNodeBlockPos(p);
4006
4007                 try
4008                 {
4009                         // Get block
4010                         if(block == NULL || blockpos != blockpos_last){
4011                                 block = m_map->getBlockNoCreate(blockpos);
4012                                 blockpos_last = blockpos;
4013                                 block_checked_in_modified = false;
4014                         }
4015
4016                         // Calculate relative position in block
4017                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
4018
4019                         // Don't continue if nothing has changed here
4020                         if(block->getNode(relpos) == n)
4021                                 continue;
4022
4023                         //m_map->setNode(m_area.MinEdge + p, n);
4024                         block->setNode(relpos, n);
4025
4026                         /*
4027                                 Make sure block is in modified_blocks
4028                         */
4029                         if(block_checked_in_modified == false)
4030                         {
4031                                 modified_blocks[blockpos] = block;
4032                                 block_checked_in_modified = true;
4033                         }
4034                 }
4035                 catch(InvalidPositionException &e)
4036                 {
4037                 }
4038         }
4039 }
4040
4041 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
4042                 MapVoxelManipulator(map),
4043                 m_create_area(false)
4044 {
4045 }
4046
4047 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
4048 {
4049 }
4050
4051 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
4052 {
4053         // Just create the area so that it can be pointed to
4054         VoxelManipulator::emerge(a, caller_id);
4055 }
4056
4057 void ManualMapVoxelManipulator::initialEmerge(
4058                 v3s16 blockpos_min, v3s16 blockpos_max)
4059 {
4060         TimeTaker timer1("initialEmerge", &emerge_time);
4061
4062         // Units of these are MapBlocks
4063         v3s16 p_min = blockpos_min;
4064         v3s16 p_max = blockpos_max;
4065
4066         VoxelArea block_area_nodes
4067                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4068
4069         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
4070         if(size_MB >= 1)
4071         {
4072                 dstream<<"initialEmerge: area: ";
4073                 block_area_nodes.print(dstream);
4074                 dstream<<" ("<<size_MB<<"MB)";
4075                 dstream<<std::endl;
4076         }
4077
4078         addArea(block_area_nodes);
4079
4080         for(s32 z=p_min.Z; z<=p_max.Z; z++)
4081         for(s32 y=p_min.Y; y<=p_max.Y; y++)
4082         for(s32 x=p_min.X; x<=p_max.X; x++)
4083         {
4084                 v3s16 p(x,y,z);
4085                 core::map<v3s16, bool>::Node *n;
4086                 n = m_loaded_blocks.find(p);
4087                 if(n != NULL)
4088                         continue;
4089
4090                 bool block_data_inexistent = false;
4091                 try
4092                 {
4093                         TimeTaker timer1("emerge load", &emerge_load_time);
4094
4095                         MapBlock *block = m_map->getBlockNoCreate(p);
4096                         if(block->isDummy())
4097                                 block_data_inexistent = true;
4098                         else
4099                                 block->copyTo(*this);
4100                 }
4101                 catch(InvalidPositionException &e)
4102                 {
4103                         block_data_inexistent = true;
4104                 }
4105
4106                 if(block_data_inexistent)
4107                 {
4108                         /*
4109                                 Mark area inexistent
4110                         */
4111                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4112                         // Fill with VOXELFLAG_INEXISTENT
4113                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4114                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4115                         {
4116                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4117                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4118                         }
4119                 }
4120
4121                 m_loaded_blocks.insert(p, !block_data_inexistent);
4122         }
4123 }
4124
4125 void ManualMapVoxelManipulator::blitBackAll(
4126                 core::map<v3s16, MapBlock*> * modified_blocks)
4127 {
4128         if(m_area.getExtent() == v3s16(0,0,0))
4129                 return;
4130
4131         /*
4132                 Copy data of all blocks
4133         */
4134         for(core::map<v3s16, bool>::Iterator
4135                         i = m_loaded_blocks.getIterator();
4136                         i.atEnd() == false; i++)
4137         {
4138                 v3s16 p = i.getNode()->getKey();
4139                 bool existed = i.getNode()->getValue();
4140                 if(existed == false)
4141                 {
4142                         // The Great Bug was found using this
4143                         /*dstream<<"ManualMapVoxelManipulator::blitBackAll: "
4144                                         <<"Inexistent ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4145                                         <<std::endl;*/
4146                         continue;
4147                 }
4148                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4149                 if(block == NULL)
4150                 {
4151                         dstream<<"WARNING: "<<__FUNCTION_NAME
4152                                         <<": got NULL block "
4153                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4154                                         <<std::endl;
4155                         continue;
4156                 }
4157
4158                 block->copyFrom(*this);
4159
4160                 if(modified_blocks)
4161                         modified_blocks->insert(p, block);
4162         }
4163 }
4164
4165 //END