src/map.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "map.h"
  21 #include "mapsector.h"
  22 #include "mapblock.h"
  23 #include "main.h"
  24 #include "client.h"
  25 #include "filesys.h"
  26 #include "utility.h"
  27 #include "voxel.h"
  28 #include "porting.h"
  29 #include "mapgen.h"
  30 #include "nodemetadata.h"
  31
  32 extern "C" {
  33         #include "sqlite3.h"
  34 }
  35 /*
  36         SQLite format specification:
  37         - Initially only replaces sectors/ and sectors2/
  38 */
  39
  40 /*
  41         Map
  42 */
  43
  44 Map::Map(std::ostream &dout):
  45         m_dout(dout),
  46         m_sector_cache(NULL)
  47 {
  48         /*m_sector_mutex.Init();
  49         assert(m_sector_mutex.IsInitialized());*/
  50 }
  51
  52 Map::~Map()
  53 {
  54         /*
  55                 Free all MapSectors
  56         */
  57         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
  58         for(; i.atEnd() == false; i++)
  59         {
  60                 MapSector *sector = i.getNode()->getValue();
  61                 delete sector;
  62         }
  63 }
  64
  65 void Map::addEventReceiver(MapEventReceiver *event_receiver)
  66 {
  67         m_event_receivers.insert(event_receiver, false);
  68 }
  69
  70 void Map::removeEventReceiver(MapEventReceiver *event_receiver)
  71 {
  72         if(m_event_receivers.find(event_receiver) == NULL)
  73                 return;
  74         m_event_receivers.remove(event_receiver);
  75 }
  76
  77 void Map::dispatchEvent(MapEditEvent *event)
  78 {
  79         for(core::map<MapEventReceiver*, bool>::Iterator
  80                         i = m_event_receivers.getIterator();
  81                         i.atEnd()==false; i++)
  82         {
  83                 MapEventReceiver* event_receiver = i.getNode()->getKey();
  84                 event_receiver->onMapEditEvent(event);
  85         }
  86 }
  87
  88 MapSector * Map::getSectorNoGenerateNoExNoLock(v2s16 p)
  89 {
  90         if(m_sector_cache != NULL && p == m_sector_cache_p){
  91                 MapSector * sector = m_sector_cache;
  92                 return sector;
  93         }
  94
  95         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p);
  96
  97         if(n == NULL)
  98                 return NULL;
  99
 100         MapSector *sector = n->getValue();
 101
 102         // Cache the last result
 103         m_sector_cache_p = p;
 104         m_sector_cache = sector;
 105
 106         return sector;
 107 }
 108
 109 MapSector * Map::getSectorNoGenerateNoEx(v2s16 p)
 110 {
 111         return getSectorNoGenerateNoExNoLock(p);
 112 }
 113
 114 MapSector * Map::getSectorNoGenerate(v2s16 p)
 115 {
 116         MapSector *sector = getSectorNoGenerateNoEx(p);
 117         if(sector == NULL)
 118                 throw InvalidPositionException();
 119
 120         return sector;
 121 }
 122
 123 MapBlock * Map::getBlockNoCreateNoEx(v3s16 p3d)
 124 {
 125         v2s16 p2d(p3d.X, p3d.Z);
 126         MapSector * sector = getSectorNoGenerateNoEx(p2d);
 127         if(sector == NULL)
 128                 return NULL;
 129         MapBlock *block = sector->getBlockNoCreateNoEx(p3d.Y);
 130         return block;
 131 }
 132
 133 MapBlock * Map::getBlockNoCreate(v3s16 p3d)
 134 {
 135         MapBlock *block = getBlockNoCreateNoEx(p3d);
 136         if(block == NULL)
 137                 throw InvalidPositionException();
 138         return block;
 139 }
 140
 141 bool Map::isNodeUnderground(v3s16 p)
 142 {
 143         v3s16 blockpos = getNodeBlockPos(p);
 144         try{
 145                 MapBlock * block = getBlockNoCreate(blockpos);
 146                 return block->getIsUnderground();
 147         }
 148         catch(InvalidPositionException &e)
 149         {
 150                 return false;
 151         }
 152 }
 153
 154 bool Map::isValidPosition(v3s16 p)
 155 {
 156         v3s16 blockpos = getNodeBlockPos(p);
 157         MapBlock *block = getBlockNoCreate(blockpos);
 158         return (block != NULL);
 159 }
 160
 161 // Returns a CONTENT_IGNORE node if not found
 162 MapNode Map::getNodeNoEx(v3s16 p)
 163 {
 164         v3s16 blockpos = getNodeBlockPos(p);
 165         MapBlock *block = getBlockNoCreateNoEx(blockpos);
 166         if(block == NULL)
 167                 return MapNode(CONTENT_IGNORE);
 168         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 169         return block->getNodeNoCheck(relpos);
 170 }
 171
 172 // throws InvalidPositionException if not found
 173 MapNode Map::getNode(v3s16 p)
 174 {
 175         v3s16 blockpos = getNodeBlockPos(p);
 176         MapBlock *block = getBlockNoCreateNoEx(blockpos);
 177         if(block == NULL)
 178                 throw InvalidPositionException();
 179         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 180         return block->getNodeNoCheck(relpos);
 181 }
 182
 183 // throws InvalidPositionException if not found
 184 void Map::setNode(v3s16 p, MapNode & n)
 185 {
 186         v3s16 blockpos = getNodeBlockPos(p);
 187         MapBlock *block = getBlockNoCreate(blockpos);
 188         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 189         block->setNodeNoCheck(relpos, n);
 190 }
 191
 192
 193 /*
 194         Goes recursively through the neighbours of the node.
 195
 196         Alters only transparent nodes.
 197
 198         If the lighting of the neighbour is lower than the lighting of
 199         the node was (before changing it to 0 at the step before), the
 200         lighting of the neighbour is set to 0 and then the same stuff
 201         repeats for the neighbour.
 202
 203         The ending nodes of the routine are stored in light_sources.
 204         This is useful when a light is removed. In such case, this
 205         routine can be called for the light node and then again for
 206         light_sources to re-light the area without the removed light.
 207
 208         values of from_nodes are lighting values.
 209 */
 210 void Map::unspreadLight(enum LightBank bank,
 211                 core::map<v3s16, u8> & from_nodes,
 212                 core::map<v3s16, bool> & light_sources,
 213                 core::map<v3s16, MapBlock*>  & modified_blocks)
 214 {
 215         v3s16 dirs[6] = {
 216                 v3s16(0,0,1), // back
 217                 v3s16(0,1,0), // top
 218                 v3s16(1,0,0), // right
 219                 v3s16(0,0,-1), // front
 220                 v3s16(0,-1,0), // bottom
 221                 v3s16(-1,0,0), // left
 222         };
 223
 224         if(from_nodes.size() == 0)
 225                 return;
 226
 227         u32 blockchangecount = 0;
 228
 229         core::map<v3s16, u8> unlighted_nodes;
 230         core::map<v3s16, u8>::Iterator j;
 231         j = from_nodes.getIterator();
 232
 233         /*
 234                 Initialize block cache
 235         */
 236         v3s16 blockpos_last;
 237         MapBlock *block = NULL;
 238         // Cache this a bit, too
 239         bool block_checked_in_modified = false;
 240
 241         for(; j.atEnd() == false; j++)
 242         {
 243                 v3s16 pos = j.getNode()->getKey();
 244                 v3s16 blockpos = getNodeBlockPos(pos);
 245
 246                 // Only fetch a new block if the block position has changed
 247                 try{
 248                         if(block == NULL || blockpos != blockpos_last){
 249                                 block = getBlockNoCreate(blockpos);
 250                                 blockpos_last = blockpos;
 251
 252                                 block_checked_in_modified = false;
 253                                 blockchangecount++;
 254                         }
 255                 }
 256                 catch(InvalidPositionException &e)
 257                 {
 258                         continue;
 259                 }
 260
 261                 if(block->isDummy())
 262                         continue;
 263
 264                 // Calculate relative position in block
 265                 v3s16 relpos = pos - blockpos_last * MAP_BLOCKSIZE;
 266
 267                 // Get node straight from the block
 268                 MapNode n = block->getNode(relpos);
 269
 270                 u8 oldlight = j.getNode()->getValue();
 271
 272                 // Loop through 6 neighbors
 273                 for(u16 i=0; i<6; i++)
 274                 {
 275                         // Get the position of the neighbor node
 276                         v3s16 n2pos = pos + dirs[i];
 277
 278                         // Get the block where the node is located
 279                         v3s16 blockpos = getNodeBlockPos(n2pos);
 280
 281                         try
 282                         {
 283                                 // Only fetch a new block if the block position has changed
 284                                 try{
 285                                         if(block == NULL || blockpos != blockpos_last){
 286                                                 block = getBlockNoCreate(blockpos);
 287                                                 blockpos_last = blockpos;
 288
 289                                                 block_checked_in_modified = false;
 290                                                 blockchangecount++;
 291                                         }
 292                                 }
 293                                 catch(InvalidPositionException &e)
 294                                 {
 295                                         continue;
 296                                 }
 297
 298                                 // Calculate relative position in block
 299                                 v3s16 relpos = n2pos - blockpos * MAP_BLOCKSIZE;
 300                                 // Get node straight from the block
 301                                 MapNode n2 = block->getNode(relpos);
 302
 303                                 bool changed = false;
 304
 305                                 //TODO: Optimize output by optimizing light_sources?
 306
 307                                 /*
 308                                         If the neighbor is dimmer than what was specified
 309                                         as oldlight (the light of the previous node)
 310                                 */
 311                                 if(n2.getLight(bank) < oldlight)
 312                                 {
 313                                         /*
 314                                                 And the neighbor is transparent and it has some light
 315                                         */
 316                                         if(n2.light_propagates() && n2.getLight(bank) != 0)
 317                                         {
 318                                                 /*
 319                                                         Set light to 0 and add to queue
 320                                                 */
 321
 322                                                 u8 current_light = n2.getLight(bank);
 323                                                 n2.setLight(bank, 0);
 324                                                 block->setNode(relpos, n2);
 325
 326                                                 unlighted_nodes.insert(n2pos, current_light);
 327                                                 changed = true;
 328
 329                                                 /*
 330                                                         Remove from light_sources if it is there
 331                                                         NOTE: This doesn't happen nearly at all
 332                                                 */
 333                                                 /*if(light_sources.find(n2pos))
 334                                                 {
 335                                                         std::cout<<"Removed from light_sources"<<std::endl;
 336                                                         light_sources.remove(n2pos);
 337                                                 }*/
 338                                         }
 339
 340                                         /*// DEBUG
 341                                         if(light_sources.find(n2pos) != NULL)
 342                                                 light_sources.remove(n2pos);*/
 343                                 }
 344                                 else{
 345                                         light_sources.insert(n2pos, true);
 346                                 }
 347
 348                                 // Add to modified_blocks
 349                                 if(changed == true && block_checked_in_modified == false)
 350                                 {
 351                                         // If the block is not found in modified_blocks, add.
 352                                         if(modified_blocks.find(blockpos) == NULL)
 353                                         {
 354                                                 modified_blocks.insert(blockpos, block);
 355                                         }
 356                                         block_checked_in_modified = true;
 357                                 }
 358                         }
 359                         catch(InvalidPositionException &e)
 360                         {
 361                                 continue;
 362                         }
 363                 }
 364         }
 365
 366         /*dstream<<"unspreadLight(): Changed block "
 367                         <<blockchangecount<<" times"
 368                         <<" for "<<from_nodes.size()<<" nodes"
 369                         <<std::endl;*/
 370
 371         if(unlighted_nodes.size() > 0)
 372                 unspreadLight(bank, unlighted_nodes, light_sources, modified_blocks);
 373 }
 374
 375 /*
 376         A single-node wrapper of the above
 377 */
 378 void Map::unLightNeighbors(enum LightBank bank,
 379                 v3s16 pos, u8 lightwas,
 380                 core::map<v3s16, bool> & light_sources,
 381                 core::map<v3s16, MapBlock*>  & modified_blocks)
 382 {
 383         core::map<v3s16, u8> from_nodes;
 384         from_nodes.insert(pos, lightwas);
 385
 386         unspreadLight(bank, from_nodes, light_sources, modified_blocks);
 387 }
 388
 389 /*
 390         Lights neighbors of from_nodes, collects all them and then
 391         goes on recursively.
 392 */
 393 void Map::spreadLight(enum LightBank bank,
 394                 core::map<v3s16, bool> & from_nodes,
 395                 core::map<v3s16, MapBlock*> & modified_blocks)
 396 {
 397         const v3s16 dirs[6] = {
 398                 v3s16(0,0,1), // back
 399                 v3s16(0,1,0), // top
 400                 v3s16(1,0,0), // right
 401                 v3s16(0,0,-1), // front
 402                 v3s16(0,-1,0), // bottom
 403                 v3s16(-1,0,0), // left
 404         };
 405
 406         if(from_nodes.size() == 0)
 407                 return;
 408
 409         u32 blockchangecount = 0;
 410
 411         core::map<v3s16, bool> lighted_nodes;
 412         core::map<v3s16, bool>::Iterator j;
 413         j = from_nodes.getIterator();
 414
 415         /*
 416                 Initialize block cache
 417         */
 418         v3s16 blockpos_last;
 419         MapBlock *block = NULL;
 420         // Cache this a bit, too
 421         bool block_checked_in_modified = false;
 422
 423         for(; j.atEnd() == false; j++)
 424         //for(; j != from_nodes.end(); j++)
 425         {
 426                 v3s16 pos = j.getNode()->getKey();
 427                 //v3s16 pos = *j;
 428                 //dstream<<"pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"<<std::endl;
 429                 v3s16 blockpos = getNodeBlockPos(pos);
 430
 431                 // Only fetch a new block if the block position has changed
 432                 try{
 433                         if(block == NULL || blockpos != blockpos_last){
 434                                 block = getBlockNoCreate(blockpos);
 435                                 blockpos_last = blockpos;
 436
 437                                 block_checked_in_modified = false;
 438                                 blockchangecount++;
 439                         }
 440                 }
 441                 catch(InvalidPositionException &e)
 442                 {
 443                         continue;
 444                 }
 445
 446                 if(block->isDummy())
 447                         continue;
 448
 449                 // Calculate relative position in block
 450                 v3s16 relpos = pos - blockpos_last * MAP_BLOCKSIZE;
 451
 452                 // Get node straight from the block
 453                 MapNode n = block->getNode(relpos);
 454
 455                 u8 oldlight = n.getLight(bank);
 456                 u8 newlight = diminish_light(oldlight);
 457
 458                 // Loop through 6 neighbors
 459                 for(u16 i=0; i<6; i++){
 460                         // Get the position of the neighbor node
 461                         v3s16 n2pos = pos + dirs[i];
 462
 463                         // Get the block where the node is located
 464                         v3s16 blockpos = getNodeBlockPos(n2pos);
 465
 466                         try
 467                         {
 468                                 // Only fetch a new block if the block position has changed
 469                                 try{
 470                                         if(block == NULL || blockpos != blockpos_last){
 471                                                 block = getBlockNoCreate(blockpos);
 472                                                 blockpos_last = blockpos;
 473
 474                                                 block_checked_in_modified = false;
 475                                                 blockchangecount++;
 476                                         }
 477                                 }
 478                                 catch(InvalidPositionException &e)
 479                                 {
 480                                         continue;
 481                                 }
 482
 483                                 // Calculate relative position in block
 484                                 v3s16 relpos = n2pos - blockpos * MAP_BLOCKSIZE;
 485                                 // Get node straight from the block
 486                                 MapNode n2 = block->getNode(relpos);
 487
 488                                 bool changed = false;
 489                                 /*
 490                                         If the neighbor is brighter than the current node,
 491                                         add to list (it will light up this node on its turn)
 492                                 */
 493                                 if(n2.getLight(bank) > undiminish_light(oldlight))
 494                                 {
 495                                         lighted_nodes.insert(n2pos, true);
 496                                         //lighted_nodes.push_back(n2pos);
 497                                         changed = true;
 498                                 }
 499                                 /*
 500                                         If the neighbor is dimmer than how much light this node
 501                                         would spread on it, add to list
 502                                 */
 503                                 if(n2.getLight(bank) < newlight)
 504                                 {
 505                                         if(n2.light_propagates())
 506                                         {
 507                                                 n2.setLight(bank, newlight);
 508                                                 block->setNode(relpos, n2);
 509                                                 lighted_nodes.insert(n2pos, true);
 510                                                 //lighted_nodes.push_back(n2pos);
 511                                                 changed = true;
 512                                         }
 513                                 }
 514
 515                                 // Add to modified_blocks
 516                                 if(changed == true && block_checked_in_modified == false)
 517                                 {
 518                                         // If the block is not found in modified_blocks, add.
 519                                         if(modified_blocks.find(blockpos) == NULL)
 520                                         {
 521                                                 modified_blocks.insert(blockpos, block);
 522                                         }
 523                                         block_checked_in_modified = true;
 524                                 }
 525                         }
 526                         catch(InvalidPositionException &e)
 527                         {
 528                                 continue;
 529                         }
 530                 }
 531         }
 532
 533         /*dstream<<"spreadLight(): Changed block "
 534                         <<blockchangecount<<" times"
 535                         <<" for "<<from_nodes.size()<<" nodes"
 536                         <<std::endl;*/
 537
 538         if(lighted_nodes.size() > 0)
 539                 spreadLight(bank, lighted_nodes, modified_blocks);
 540 }
 541
 542 /*
 543         A single-node source variation of the above.
 544 */
 545 void Map::lightNeighbors(enum LightBank bank,
 546                 v3s16 pos,
 547                 core::map<v3s16, MapBlock*> & modified_blocks)
 548 {
 549         core::map<v3s16, bool> from_nodes;
 550         from_nodes.insert(pos, true);
 551         spreadLight(bank, from_nodes, modified_blocks);
 552 }
 553
 554 v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
 555 {
 556         v3s16 dirs[6] = {
 557                 v3s16(0,0,1), // back
 558                 v3s16(0,1,0), // top
 559                 v3s16(1,0,0), // right
 560                 v3s16(0,0,-1), // front
 561                 v3s16(0,-1,0), // bottom
 562                 v3s16(-1,0,0), // left
 563         };
 564
 565         u8 brightest_light = 0;
 566         v3s16 brightest_pos(0,0,0);
 567         bool found_something = false;
 568
 569         // Loop through 6 neighbors
 570         for(u16 i=0; i<6; i++){
 571                 // Get the position of the neighbor node
 572                 v3s16 n2pos = p + dirs[i];
 573                 MapNode n2;
 574                 try{
 575                         n2 = getNode(n2pos);
 576                 }
 577                 catch(InvalidPositionException &e)
 578                 {
 579                         continue;
 580                 }
 581                 if(n2.getLight(bank) > brightest_light || found_something == false){
 582                         brightest_light = n2.getLight(bank);
 583                         brightest_pos = n2pos;
 584                         found_something = true;
 585                 }
 586         }
 587
 588         if(found_something == false)
 589                 throw InvalidPositionException();
 590
 591         return brightest_pos;
 592 }
 593
 594 /*
 595         Propagates sunlight down from a node.
 596         Starting point gets sunlight.
 597
 598         Returns the lowest y value of where the sunlight went.
 599
 600         Mud is turned into grass in where the sunlight stops.
 601 */
 602 s16 Map::propagateSunlight(v3s16 start,
 603                 core::map<v3s16, MapBlock*> & modified_blocks)
 604 {
 605         s16 y = start.Y;
 606         for(; ; y--)
 607         {
 608                 v3s16 pos(start.X, y, start.Z);
 609
 610                 v3s16 blockpos = getNodeBlockPos(pos);
 611                 MapBlock *block;
 612                 try{
 613                         block = getBlockNoCreate(blockpos);
 614                 }
 615                 catch(InvalidPositionException &e)
 616                 {
 617                         break;
 618                 }
 619
 620                 v3s16 relpos = pos - blockpos*MAP_BLOCKSIZE;
 621                 MapNode n = block->getNode(relpos);
 622
 623                 if(n.sunlight_propagates())
 624                 {
 625                         n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 626                         block->setNode(relpos, n);
 627
 628                         modified_blocks.insert(blockpos, block);
 629                 }
 630                 else
 631                 {
 632                         /*// Turn mud into grass
 633                         if(n.d == CONTENT_MUD)
 634                         {
 635                                 n.d = CONTENT_GRASS;
 636                                 block->setNode(relpos, n);
 637                                 modified_blocks.insert(blockpos, block);
 638                         }*/
 639
 640                         // Sunlight goes no further
 641                         break;
 642                 }
 643         }
 644         return y + 1;
 645 }
 646
 647 void Map::updateLighting(enum LightBank bank,
 648                 core::map<v3s16, MapBlock*> & a_blocks,
 649                 core::map<v3s16, MapBlock*> & modified_blocks)
 650 {
 651         /*m_dout<<DTIME<<"Map::updateLighting(): "
 652                         <<a_blocks.size()<<" blocks."<<std::endl;*/
 653
 654         //TimeTaker timer("updateLighting");
 655
 656         // For debugging
 657         //bool debug=true;
 658         //u32 count_was = modified_blocks.size();
 659
 660         core::map<v3s16, MapBlock*> blocks_to_update;
 661
 662         core::map<v3s16, bool> light_sources;
 663
 664         core::map<v3s16, u8> unlight_from;
 665
 666         core::map<v3s16, MapBlock*>::Iterator i;
 667         i = a_blocks.getIterator();
 668         for(; i.atEnd() == false; i++)
 669         {
 670                 MapBlock *block = i.getNode()->getValue();
 671
 672                 for(;;)
 673                 {
 674                         // Don't bother with dummy blocks.
 675                         if(block->isDummy())
 676                                 break;
 677
 678                         v3s16 pos = block->getPos();
 679                         modified_blocks.insert(pos, block);
 680
 681                         blocks_to_update.insert(pos, block);
 682
 683                         /*
 684                                 Clear all light from block
 685                         */
 686                         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 687                         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 688                         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 689                         {
 690
 691                                 try{
 692                                         v3s16 p(x,y,z);
 693                                         MapNode n = block->getNode(v3s16(x,y,z));
 694                                         u8 oldlight = n.getLight(bank);
 695                                         n.setLight(bank, 0);
 696                                         block->setNode(v3s16(x,y,z), n);
 697
 698                                         // Collect borders for unlighting
 699                                         if(x==0 || x == MAP_BLOCKSIZE-1
 700                                         || y==0 || y == MAP_BLOCKSIZE-1
 701                                         || z==0 || z == MAP_BLOCKSIZE-1)
 702                                         {
 703                                                 v3s16 p_map = p + v3s16(
 704                                                                 MAP_BLOCKSIZE*pos.X,
 705                                                                 MAP_BLOCKSIZE*pos.Y,
 706                                                                 MAP_BLOCKSIZE*pos.Z);
 707                                                 unlight_from.insert(p_map, oldlight);
 708                                         }
 709                                 }
 710                                 catch(InvalidPositionException &e)
 711                                 {
 712                                         /*
 713                                                 This would happen when dealing with a
 714                                                 dummy block.
 715                                         */
 716                                         //assert(0);
 717                                         dstream<<"updateLighting(): InvalidPositionException"
 718                                                         <<std::endl;
 719                                 }
 720                         }
 721
 722                         if(bank == LIGHTBANK_DAY)
 723                         {
 724                                 bool bottom_valid = block->propagateSunlight(light_sources);
 725
 726                                 // If bottom is valid, we're done.
 727                                 if(bottom_valid)
 728                                         break;
 729                         }
 730                         else if(bank == LIGHTBANK_NIGHT)
 731                         {
 732                                 // For night lighting, sunlight is not propagated
 733                                 break;
 734                         }
 735                         else
 736                         {
 737                                 // Invalid lighting bank
 738                                 assert(0);
 739                         }
 740
 741                         /*dstream<<"Bottom for sunlight-propagated block ("
 742                                         <<pos.X<<","<<pos.Y<<","<<pos.Z<<") not valid"
 743                                         <<std::endl;*/
 744
 745                         // Bottom sunlight is not valid; get the block and loop to it
 746
 747                         pos.Y--;
 748                         try{
 749                                 block = getBlockNoCreate(pos);
 750                         }
 751                         catch(InvalidPositionException &e)
 752                         {
 753                                 assert(0);
 754                         }
 755
 756                 }
 757         }
 758
 759         /*
 760                 Enable this to disable proper lighting for speeding up map
 761                 generation for testing or whatever
 762         */
 763 #if 0
 764         //if(g_settings.get(""))
 765         {
 766                 core::map<v3s16, MapBlock*>::Iterator i;
 767                 i = blocks_to_update.getIterator();
 768                 for(; i.atEnd() == false; i++)
 769                 {
 770                         MapBlock *block = i.getNode()->getValue();
 771                         v3s16 p = block->getPos();
 772                         block->setLightingExpired(false);
 773                 }
 774                 return;
 775         }
 776 #endif
 777
 778 #if 0
 779         {
 780                 TimeTaker timer("unspreadLight");
 781                 unspreadLight(bank, unlight_from, light_sources, modified_blocks);
 782         }
 783
 784         if(debug)
 785         {
 786                 u32 diff = modified_blocks.size() - count_was;
 787                 count_was = modified_blocks.size();
 788                 dstream<<"unspreadLight modified "<<diff<<std::endl;
 789         }
 790
 791         {
 792                 TimeTaker timer("spreadLight");
 793                 spreadLight(bank, light_sources, modified_blocks);
 794         }
 795
 796         if(debug)
 797         {
 798                 u32 diff = modified_blocks.size() - count_was;
 799                 count_was = modified_blocks.size();
 800                 dstream<<"spreadLight modified "<<diff<<std::endl;
 801         }
 802 #endif
 803
 804         {
 805                 //MapVoxelManipulator vmanip(this);
 806
 807                 // Make a manual voxel manipulator and load all the blocks
 808                 // that touch the requested blocks
 809                 ManualMapVoxelManipulator vmanip(this);
 810                 core::map<v3s16, MapBlock*>::Iterator i;
 811                 i = blocks_to_update.getIterator();
 812                 for(; i.atEnd() == false; i++)
 813                 {
 814                         MapBlock *block = i.getNode()->getValue();
 815                         v3s16 p = block->getPos();
 816
 817                         // Add all surrounding blocks
 818                         vmanip.initialEmerge(p - v3s16(1,1,1), p + v3s16(1,1,1));
 819
 820                         /*
 821                                 Add all surrounding blocks that have up-to-date lighting
 822                                 NOTE: This doesn't quite do the job (not everything
 823                                           appropriate is lighted)
 824                         */
 825                         /*for(s16 z=-1; z<=1; z++)
 826                         for(s16 y=-1; y<=1; y++)
 827                         for(s16 x=-1; x<=1; x++)
 828                         {
 829                                 v3s16 p(x,y,z);
 830                                 MapBlock *block = getBlockNoCreateNoEx(p);
 831                                 if(block == NULL)
 832                                         continue;
 833                                 if(block->isDummy())
 834                                         continue;
 835                                 if(block->getLightingExpired())
 836                                         continue;
 837                                 vmanip.initialEmerge(p, p);
 838                         }*/
 839
 840                         // Lighting of block will be updated completely
 841                         block->setLightingExpired(false);
 842                 }
 843
 844                 {
 845                         //TimeTaker timer("unSpreadLight");
 846                         vmanip.unspreadLight(bank, unlight_from, light_sources);
 847                 }
 848                 {
 849                         //TimeTaker timer("spreadLight");
 850                         vmanip.spreadLight(bank, light_sources);
 851                 }
 852                 {
 853                         //TimeTaker timer("blitBack");
 854                         vmanip.blitBack(modified_blocks);
 855                 }
 856                 /*dstream<<"emerge_time="<<emerge_time<<std::endl;
 857                 emerge_time = 0;*/
 858         }
 859
 860         //m_dout<<"Done ("<<getTimestamp()<<")"<<std::endl;
 861 }
 862
 863 void Map::updateLighting(core::map<v3s16, MapBlock*> & a_blocks,
 864                 core::map<v3s16, MapBlock*> & modified_blocks)
 865 {
 866         updateLighting(LIGHTBANK_DAY, a_blocks, modified_blocks);
 867         updateLighting(LIGHTBANK_NIGHT, a_blocks, modified_blocks);
 868
 869         /*
 870                 Update information about whether day and night light differ
 871         */
 872         for(core::map<v3s16, MapBlock*>::Iterator
 873                         i = modified_blocks.getIterator();
 874                         i.atEnd() == false; i++)
 875         {
 876                 MapBlock *block = i.getNode()->getValue();
 877                 block->updateDayNightDiff();
 878         }
 879 }
 880
 881 /*
 882 */
 883 void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 884                 core::map<v3s16, MapBlock*> &modified_blocks)
 885 {
 886         /*PrintInfo(m_dout);
 887         m_dout<<DTIME<<"Map::addNodeAndUpdate(): p=("
 888                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
 889
 890         /*
 891                 From this node to nodes underneath:
 892                 If lighting is sunlight (1.0), unlight neighbours and
 893                 set lighting to 0.
 894                 Else discontinue.
 895         */
 896
 897         v3s16 toppos = p + v3s16(0,1,0);
 898         v3s16 bottompos = p + v3s16(0,-1,0);
 899
 900         bool node_under_sunlight = true;
 901         core::map<v3s16, bool> light_sources;
 902
 903         /*
 904                 If there is a node at top and it doesn't have sunlight,
 905                 there has not been any sunlight going down.
 906
 907                 Otherwise there probably is.
 908         */
 909         try{
 910                 MapNode topnode = getNode(toppos);
 911
 912                 if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
 913                         node_under_sunlight = false;
 914         }
 915         catch(InvalidPositionException &e)
 916         {
 917         }
 918
 919 #if 0
 920         /*
 921                 If the new node is solid and there is grass below, change it to mud
 922         */
 923         if(content_features(n.d).walkable == true)
 924         {
 925                 try{
 926                         MapNode bottomnode = getNode(bottompos);
 927
 928                         if(bottomnode.d == CONTENT_GRASS
 929                                         || bottomnode.d == CONTENT_GRASS_FOOTSTEPS)
 930                         {
 931                                 bottomnode.d = CONTENT_MUD;
 932                                 setNode(bottompos, bottomnode);
 933                         }
 934                 }
 935                 catch(InvalidPositionException &e)
 936                 {
 937                 }
 938         }
 939 #endif
 940
 941 #if 0
 942         /*
 943                 If the new node is mud and it is under sunlight, change it
 944                 to grass
 945         */
 946         if(n.d == CONTENT_MUD && node_under_sunlight)
 947         {
 948                 n.d = CONTENT_GRASS;
 949         }
 950 #endif
 951
 952         /*
 953                 Remove all light that has come out of this node
 954         */
 955
 956         enum LightBank banks[] =
 957         {
 958                 LIGHTBANK_DAY,
 959                 LIGHTBANK_NIGHT
 960         };
 961         for(s32 i=0; i<2; i++)
 962         {
 963                 enum LightBank bank = banks[i];
 964
 965                 u8 lightwas = getNode(p).getLight(bank);
 966
 967                 // Add the block of the added node to modified_blocks
 968                 v3s16 blockpos = getNodeBlockPos(p);
 969                 MapBlock * block = getBlockNoCreate(blockpos);
 970                 assert(block != NULL);
 971                 modified_blocks.insert(blockpos, block);
 972
 973                 assert(isValidPosition(p));
 974
 975                 // Unlight neighbours of node.
 976                 // This means setting light of all consequent dimmer nodes
 977                 // to 0.
 978                 // This also collects the nodes at the border which will spread
 979                 // light again into this.
 980                 unLightNeighbors(bank, p, lightwas, light_sources, modified_blocks);
 981
 982                 n.setLight(bank, 0);
 983         }
 984
 985         /*
 986                 If node lets sunlight through and is under sunlight, it has
 987                 sunlight too.
 988         */
 989         if(node_under_sunlight && content_features(n.d).sunlight_propagates)
 990         {
 991                 n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 992         }
 993
 994         /*
 995                 Set the node on the map
 996         */
 997
 998         setNode(p, n);
 999
1000         /*
1001                 Add intial metadata
1002         */
1003
1004         NodeMetadata *meta_proto = content_features(n.d).initial_metadata;
1005         if(meta_proto)
1006         {
1007                 NodeMetadata *meta = meta_proto->clone();
1008                 setNodeMetadata(p, meta);
1009         }
1010
1011         /*
1012                 If node is under sunlight and doesn't let sunlight through,
1013                 take all sunlighted nodes under it and clear light from them
1014                 and from where the light has been spread.
1015                 TODO: This could be optimized by mass-unlighting instead
1016                           of looping
1017         */
1018         if(node_under_sunlight && !content_features(n.d).sunlight_propagates)
1019         {
1020                 s16 y = p.Y - 1;
1021                 for(;; y--){
1022                         //m_dout<<DTIME<<"y="<<y<<std::endl;
1023                         v3s16 n2pos(p.X, y, p.Z);
1024
1025                         MapNode n2;
1026                         try{
1027                                 n2 = getNode(n2pos);
1028                         }
1029                         catch(InvalidPositionException &e)
1030                         {
1031                                 break;
1032                         }
1033
1034                         if(n2.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
1035                         {
1036                                 unLightNeighbors(LIGHTBANK_DAY,
1037                                                 n2pos, n2.getLight(LIGHTBANK_DAY),
1038                                                 light_sources, modified_blocks);
1039                                 n2.setLight(LIGHTBANK_DAY, 0);
1040                                 setNode(n2pos, n2);
1041                         }
1042                         else
1043                                 break;
1044                 }
1045         }
1046
1047         for(s32 i=0; i<2; i++)
1048         {
1049                 enum LightBank bank = banks[i];
1050
1051                 /*
1052                         Spread light from all nodes that might be capable of doing so
1053                 */
1054                 spreadLight(bank, light_sources, modified_blocks);
1055         }
1056
1057         /*
1058                 Update information about whether day and night light differ
1059         */
1060         for(core::map<v3s16, MapBlock*>::Iterator
1061                         i = modified_blocks.getIterator();
1062                         i.atEnd() == false; i++)
1063         {
1064                 MapBlock *block = i.getNode()->getValue();
1065                 block->updateDayNightDiff();
1066         }
1067
1068         /*
1069                 Add neighboring liquid nodes and the node itself if it is
1070                 liquid (=water node was added) to transform queue.
1071         */
1072         v3s16 dirs[7] = {
1073                 v3s16(0,0,0), // self
1074                 v3s16(0,0,1), // back
1075                 v3s16(0,1,0), // top
1076                 v3s16(1,0,0), // right
1077                 v3s16(0,0,-1), // front
1078                 v3s16(0,-1,0), // bottom
1079                 v3s16(-1,0,0), // left
1080         };
1081         for(u16 i=0; i<7; i++)
1082         {
1083                 try
1084                 {
1085
1086                 v3s16 p2 = p + dirs[i];
1087
1088                 MapNode n2 = getNode(p2);
1089                 if(content_liquid(n2.d))
1090                 {
1091                         m_transforming_liquid.push_back(p2);
1092                 }
1093
1094                 }catch(InvalidPositionException &e)
1095                 {
1096                 }
1097         }
1098 }
1099
1100 /*
1101 */
1102 void Map::removeNodeAndUpdate(v3s16 p,
1103                 core::map<v3s16, MapBlock*> &modified_blocks)
1104 {
1105         /*PrintInfo(m_dout);
1106         m_dout<<DTIME<<"Map::removeNodeAndUpdate(): p=("
1107                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1108
1109         bool node_under_sunlight = true;
1110
1111         v3s16 toppos = p + v3s16(0,1,0);
1112
1113         // Node will be replaced with this
1114         u8 replace_material = CONTENT_AIR;
1115
1116         /*
1117                 If there is a node at top and it doesn't have sunlight,
1118                 there will be no sunlight going down.
1119         */
1120         try{
1121                 MapNode topnode = getNode(toppos);
1122
1123                 if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
1124                         node_under_sunlight = false;
1125         }
1126         catch(InvalidPositionException &e)
1127         {
1128         }
1129
1130         core::map<v3s16, bool> light_sources;
1131
1132         enum LightBank banks[] =
1133         {
1134                 LIGHTBANK_DAY,
1135                 LIGHTBANK_NIGHT
1136         };
1137         for(s32 i=0; i<2; i++)
1138         {
1139                 enum LightBank bank = banks[i];
1140
1141                 /*
1142                         Unlight neighbors (in case the node is a light source)
1143                 */
1144                 unLightNeighbors(bank, p,
1145                                 getNode(p).getLight(bank),
1146                                 light_sources, modified_blocks);
1147         }
1148
1149         /*
1150                 Remove node metadata
1151         */
1152
1153         removeNodeMetadata(p);
1154
1155         /*
1156                 Remove the node.
1157                 This also clears the lighting.
1158         */
1159
1160         MapNode n;
1161         n.d = replace_material;
1162         setNode(p, n);
1163
1164         for(s32 i=0; i<2; i++)
1165         {
1166                 enum LightBank bank = banks[i];
1167
1168                 /*
1169                         Recalculate lighting
1170                 */
1171                 spreadLight(bank, light_sources, modified_blocks);
1172         }
1173
1174         // Add the block of the removed node to modified_blocks
1175         v3s16 blockpos = getNodeBlockPos(p);
1176         MapBlock * block = getBlockNoCreate(blockpos);
1177         assert(block != NULL);
1178         modified_blocks.insert(blockpos, block);
1179
1180         /*
1181                 If the removed node was under sunlight, propagate the
1182                 sunlight down from it and then light all neighbors
1183                 of the propagated blocks.
1184         */
1185         if(node_under_sunlight)
1186         {
1187                 s16 ybottom = propagateSunlight(p, modified_blocks);
1188                 /*m_dout<<DTIME<<"Node was under sunlight. "
1189                                 "Propagating sunlight";
1190                 m_dout<<DTIME<<" -> ybottom="<<ybottom<<std::endl;*/
1191                 s16 y = p.Y;
1192                 for(; y >= ybottom; y--)
1193                 {
1194                         v3s16 p2(p.X, y, p.Z);
1195                         /*m_dout<<DTIME<<"lighting neighbors of node ("
1196                                         <<p2.X<<","<<p2.Y<<","<<p2.Z<<")"
1197                                         <<std::endl;*/
1198                         lightNeighbors(LIGHTBANK_DAY, p2, modified_blocks);
1199                 }
1200         }
1201         else
1202         {
1203                 // Set the lighting of this node to 0
1204                 // TODO: Is this needed? Lighting is cleared up there already.
1205                 try{
1206                         MapNode n = getNode(p);
1207                         n.setLight(LIGHTBANK_DAY, 0);
1208                         setNode(p, n);
1209                 }
1210                 catch(InvalidPositionException &e)
1211                 {
1212                         assert(0);
1213                 }
1214         }
1215
1216         for(s32 i=0; i<2; i++)
1217         {
1218                 enum LightBank bank = banks[i];
1219
1220                 // Get the brightest neighbour node and propagate light from it
1221                 v3s16 n2p = getBrightestNeighbour(bank, p);
1222                 try{
1223                         MapNode n2 = getNode(n2p);
1224                         lightNeighbors(bank, n2p, modified_blocks);
1225                 }
1226                 catch(InvalidPositionException &e)
1227                 {
1228                 }
1229         }
1230
1231         /*
1232                 Update information about whether day and night light differ
1233         */
1234         for(core::map<v3s16, MapBlock*>::Iterator
1235                         i = modified_blocks.getIterator();
1236                         i.atEnd() == false; i++)
1237         {
1238                 MapBlock *block = i.getNode()->getValue();
1239                 block->updateDayNightDiff();
1240         }
1241
1242         /*
1243                 Add neighboring liquid nodes to transform queue.
1244         */
1245         v3s16 dirs[6] = {
1246                 v3s16(0,0,1), // back
1247                 v3s16(0,1,0), // top
1248                 v3s16(1,0,0), // right
1249                 v3s16(0,0,-1), // front
1250                 v3s16(0,-1,0), // bottom
1251                 v3s16(-1,0,0), // left
1252         };
1253         for(u16 i=0; i<6; i++)
1254         {
1255                 try
1256                 {
1257
1258                 v3s16 p2 = p + dirs[i];
1259
1260                 MapNode n2 = getNode(p2);
1261                 if(content_liquid(n2.d))
1262                 {
1263                         m_transforming_liquid.push_back(p2);
1264                 }
1265
1266                 }catch(InvalidPositionException &e)
1267                 {
1268                 }
1269         }
1270 }
1271
1272 bool Map::addNodeWithEvent(v3s16 p, MapNode n)
1273 {
1274         MapEditEvent event;
1275         event.type = MEET_ADDNODE;
1276         event.p = p;
1277         event.n = n;
1278
1279         bool succeeded = true;
1280         try{
1281                 core::map<v3s16, MapBlock*> modified_blocks;
1282                 addNodeAndUpdate(p, n, modified_blocks);
1283
1284                 // Copy modified_blocks to event
1285                 for(core::map<v3s16, MapBlock*>::Iterator
1286                                 i = modified_blocks.getIterator();
1287                                 i.atEnd()==false; i++)
1288                 {
1289                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1290                 }
1291         }
1292         catch(InvalidPositionException &e){
1293                 succeeded = false;
1294         }
1295
1296         dispatchEvent(&event);
1297
1298         return succeeded;
1299 }
1300
1301 bool Map::removeNodeWithEvent(v3s16 p)
1302 {
1303         MapEditEvent event;
1304         event.type = MEET_REMOVENODE;
1305         event.p = p;
1306
1307         bool succeeded = true;
1308         try{
1309                 core::map<v3s16, MapBlock*> modified_blocks;
1310                 removeNodeAndUpdate(p, modified_blocks);
1311
1312                 // Copy modified_blocks to event
1313                 for(core::map<v3s16, MapBlock*>::Iterator
1314                                 i = modified_blocks.getIterator();
1315                                 i.atEnd()==false; i++)
1316                 {
1317                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1318                 }
1319         }
1320         catch(InvalidPositionException &e){
1321                 succeeded = false;
1322         }
1323
1324         dispatchEvent(&event);
1325
1326         return succeeded;
1327 }
1328
1329 bool Map::dayNightDiffed(v3s16 blockpos)
1330 {
1331         try{
1332                 v3s16 p = blockpos + v3s16(0,0,0);
1333                 MapBlock *b = getBlockNoCreate(p);
1334                 if(b->dayNightDiffed())
1335                         return true;
1336         }
1337         catch(InvalidPositionException &e){}
1338         // Leading edges
1339         try{
1340                 v3s16 p = blockpos + v3s16(-1,0,0);
1341                 MapBlock *b = getBlockNoCreate(p);
1342                 if(b->dayNightDiffed())
1343                         return true;
1344         }
1345         catch(InvalidPositionException &e){}
1346         try{
1347                 v3s16 p = blockpos + v3s16(0,-1,0);
1348                 MapBlock *b = getBlockNoCreate(p);
1349                 if(b->dayNightDiffed())
1350                         return true;
1351         }
1352         catch(InvalidPositionException &e){}
1353         try{
1354                 v3s16 p = blockpos + v3s16(0,0,-1);
1355                 MapBlock *b = getBlockNoCreate(p);
1356                 if(b->dayNightDiffed())
1357                         return true;
1358         }
1359         catch(InvalidPositionException &e){}
1360         // Trailing edges
1361         try{
1362                 v3s16 p = blockpos + v3s16(1,0,0);
1363                 MapBlock *b = getBlockNoCreate(p);
1364                 if(b->dayNightDiffed())
1365                         return true;
1366         }
1367         catch(InvalidPositionException &e){}
1368         try{
1369                 v3s16 p = blockpos + v3s16(0,1,0);
1370                 MapBlock *b = getBlockNoCreate(p);
1371                 if(b->dayNightDiffed())
1372                         return true;
1373         }
1374         catch(InvalidPositionException &e){}
1375         try{
1376                 v3s16 p = blockpos + v3s16(0,0,1);
1377                 MapBlock *b = getBlockNoCreate(p);
1378                 if(b->dayNightDiffed())
1379                         return true;
1380         }
1381         catch(InvalidPositionException &e){}
1382
1383         return false;
1384 }
1385
1386 /*
1387         Updates usage timers
1388 */
1389 void Map::timerUpdate(float dtime, float unload_timeout,
1390                 core::list<v3s16> *unloaded_blocks)
1391 {
1392         bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
1393
1394         core::list<v2s16> sector_deletion_queue;
1395         u32 deleted_blocks_count = 0;
1396         u32 saved_blocks_count = 0;
1397
1398         core::map<v2s16, MapSector*>::Iterator si;
1399
1400         si = m_sectors.getIterator();
1401         for(; si.atEnd() == false; si++)
1402         {
1403                 MapSector *sector = si.getNode()->getValue();
1404
1405                 bool all_blocks_deleted = true;
1406
1407                 core::list<MapBlock*> blocks;
1408                 sector->getBlocks(blocks);
1409                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1410                                 i != blocks.end(); i++)
1411                 {
1412                         MapBlock *block = (*i);
1413
1414                         block->incrementUsageTimer(dtime);
1415
1416                         if(block->getUsageTimer() > unload_timeout)
1417                         {
1418                                 v3s16 p = block->getPos();
1419
1420                                 // Save if modified
1421                                 if(block->getModified() != MOD_STATE_CLEAN
1422                                                 && save_before_unloading)
1423                                 {
1424                                         saveBlock(block);
1425                                         saved_blocks_count++;
1426                                 }
1427
1428                                 // Delete from memory
1429                                 sector->deleteBlock(block);
1430
1431                                 if(unloaded_blocks)
1432                                         unloaded_blocks->push_back(p);
1433
1434                                 deleted_blocks_count++;
1435                         }
1436                         else
1437                         {
1438                                 all_blocks_deleted = false;
1439                         }
1440                 }
1441
1442                 if(all_blocks_deleted)
1443                 {
1444                         sector_deletion_queue.push_back(si.getNode()->getKey());
1445                 }
1446         }
1447
1448         // Finally delete the empty sectors
1449         deleteSectors(sector_deletion_queue);
1450
1451         if(deleted_blocks_count != 0)
1452         {
1453                 PrintInfo(dstream); // ServerMap/ClientMap:
1454                 dstream<<"Unloaded "<<deleted_blocks_count
1455                                 <<" blocks from memory";
1456                 if(save_before_unloading)
1457                         dstream<<", of which "<<saved_blocks_count<<" were written";
1458                 dstream<<"."<<std::endl;
1459         }
1460 }
1461
1462 void Map::deleteSectors(core::list<v2s16> &list)
1463 {
1464         core::list<v2s16>::Iterator j;
1465         for(j=list.begin(); j!=list.end(); j++)
1466         {
1467                 MapSector *sector = m_sectors[*j];
1468                 // If sector is in sector cache, remove it from there
1469                 if(m_sector_cache == sector)
1470                         m_sector_cache = NULL;
1471                 // Remove from map and delete
1472                 m_sectors.remove(*j);
1473                 delete sector;
1474         }
1475 }
1476
1477 #if 0
1478 void Map::unloadUnusedData(float timeout,
1479                 core::list<v3s16> *deleted_blocks)
1480 {
1481         core::list<v2s16> sector_deletion_queue;
1482         u32 deleted_blocks_count = 0;
1483         u32 saved_blocks_count = 0;
1484
1485         core::map<v2s16, MapSector*>::Iterator si = m_sectors.getIterator();
1486         for(; si.atEnd() == false; si++)
1487         {
1488                 MapSector *sector = si.getNode()->getValue();
1489
1490                 bool all_blocks_deleted = true;
1491
1492                 core::list<MapBlock*> blocks;
1493                 sector->getBlocks(blocks);
1494                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1495                                 i != blocks.end(); i++)
1496                 {
1497                         MapBlock *block = (*i);
1498
1499                         if(block->getUsageTimer() > timeout)
1500                         {
1501                                 // Save if modified
1502                                 if(block->getModified() != MOD_STATE_CLEAN)
1503                                 {
1504                                         saveBlock(block);
1505                                         saved_blocks_count++;
1506                                 }
1507                                 // Delete from memory
1508                                 sector->deleteBlock(block);
1509                                 deleted_blocks_count++;
1510                         }
1511                         else
1512                         {
1513                                 all_blocks_deleted = false;
1514                         }
1515                 }
1516
1517                 if(all_blocks_deleted)
1518                 {
1519                         sector_deletion_queue.push_back(si.getNode()->getKey());
1520                 }
1521         }
1522
1523         deleteSectors(sector_deletion_queue);
1524
1525         dstream<<"Map: Unloaded "<<deleted_blocks_count<<" blocks from memory"
1526                         <<", of which "<<saved_blocks_count<<" were wr."
1527                         <<std::endl;
1528
1529         //return sector_deletion_queue.getSize();
1530         //return deleted_blocks_count;
1531 }
1532 #endif
1533
1534 void Map::PrintInfo(std::ostream &out)
1535 {
1536         out<<"Map: ";
1537 }
1538
1539 #define WATER_DROP_BOOST 4
1540
1541 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
1542 {
1543         DSTACK(__FUNCTION_NAME);
1544         //TimeTaker timer("transformLiquids()");
1545
1546         u32 loopcount = 0;
1547         u32 initial_size = m_transforming_liquid.size();
1548
1549         /*if(initial_size != 0)
1550                 dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
1551
1552         while(m_transforming_liquid.size() != 0)
1553         {
1554                 /*
1555                         Get a queued transforming liquid node
1556                 */
1557                 v3s16 p0 = m_transforming_liquid.pop_front();
1558
1559                 MapNode n0 = getNodeNoEx(p0);
1560
1561                 // Don't deal with non-liquids
1562                 if(content_liquid(n0.d) == false)
1563                         continue;
1564
1565                 bool is_source = !content_flowing_liquid(n0.d);
1566
1567                 u8 liquid_level = 8;
1568                 if(is_source == false)
1569                         liquid_level = n0.param2 & 0x0f;
1570
1571                 // Turn possible source into non-source
1572                 u8 nonsource_c = make_liquid_flowing(n0.d);
1573
1574                 /*
1575                         If not source, check that some node flows into this one
1576                         and what is the level of liquid in this one
1577                 */
1578                 if(is_source == false)
1579                 {
1580                         s8 new_liquid_level_max = -1;
1581
1582                         v3s16 dirs_from[5] = {
1583                                 v3s16(0,1,0), // top
1584                                 v3s16(0,0,1), // back
1585                                 v3s16(1,0,0), // right
1586                                 v3s16(0,0,-1), // front
1587                                 v3s16(-1,0,0), // left
1588                         };
1589                         for(u16 i=0; i<5; i++)
1590                         {
1591                                 bool from_top = (i==0);
1592
1593                                 v3s16 p2 = p0 + dirs_from[i];
1594                                 MapNode n2 = getNodeNoEx(p2);
1595
1596                                 if(content_liquid(n2.d))
1597                                 {
1598                                         u8 n2_nonsource_c = make_liquid_flowing(n2.d);
1599                                         // Check that the liquids are the same type
1600                                         if(n2_nonsource_c != nonsource_c)
1601                                         {
1602                                                 dstream<<"WARNING: Not handling: different liquids"
1603                                                                 " collide"<<std::endl;
1604                                                 continue;
1605                                         }
1606                                         bool n2_is_source = !content_flowing_liquid(n2.d);
1607                                         s8 n2_liquid_level = 8;
1608                                         if(n2_is_source == false)
1609                                                 n2_liquid_level = n2.param2 & 0x07;
1610
1611                                         s8 new_liquid_level = -1;
1612                                         if(from_top)
1613                                         {
1614                                                 //new_liquid_level = 7;
1615                                                 if(n2_liquid_level >= 7 - WATER_DROP_BOOST)
1616                                                         new_liquid_level = 7;
1617                                                 else
1618                                                         new_liquid_level = n2_liquid_level + WATER_DROP_BOOST;
1619                                         }
1620                                         else if(n2_liquid_level > 0)
1621                                         {
1622                                                 new_liquid_level = n2_liquid_level - 1;
1623                                         }
1624
1625                                         if(new_liquid_level > new_liquid_level_max)
1626                                                 new_liquid_level_max = new_liquid_level;
1627                                 }
1628                         } //for
1629
1630                         /*
1631                                 If liquid level should be something else, update it and
1632                                 add all the neighboring water nodes to the transform queue.
1633                         */
1634                         if(new_liquid_level_max != liquid_level)
1635                         {
1636                                 if(new_liquid_level_max == -1)
1637                                 {
1638                                         // Remove water alltoghether
1639                                         n0.d = CONTENT_AIR;
1640                                         n0.param2 = 0;
1641                                         setNode(p0, n0);
1642                                 }
1643                                 else
1644                                 {
1645                                         n0.param2 = new_liquid_level_max;
1646                                         setNode(p0, n0);
1647                                 }
1648
1649                                 // Block has been modified
1650                                 {
1651                                         v3s16 blockpos = getNodeBlockPos(p0);
1652                                         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1653                                         if(block != NULL)
1654                                                 modified_blocks.insert(blockpos, block);
1655                                 }
1656
1657                                 /*
1658                                         Add neighboring non-source liquid nodes to transform queue.
1659                                 */
1660                                 v3s16 dirs[6] = {
1661                                         v3s16(0,0,1), // back
1662                                         v3s16(0,1,0), // top
1663                                         v3s16(1,0,0), // right
1664                                         v3s16(0,0,-1), // front
1665                                         v3s16(0,-1,0), // bottom
1666                                         v3s16(-1,0,0), // left
1667                                 };
1668                                 for(u16 i=0; i<6; i++)
1669                                 {
1670                                         v3s16 p2 = p0 + dirs[i];
1671
1672                                         MapNode n2 = getNodeNoEx(p2);
1673                                         if(content_flowing_liquid(n2.d))
1674                                         {
1675                                                 m_transforming_liquid.push_back(p2);
1676                                         }
1677                                 }
1678                         }
1679                 }
1680
1681                 // Get a new one from queue if the node has turned into non-water
1682                 if(content_liquid(n0.d) == false)
1683                         continue;
1684
1685                 /*
1686                         Flow water from this node
1687                 */
1688                 v3s16 dirs_to[5] = {
1689                         v3s16(0,-1,0), // bottom
1690                         v3s16(0,0,1), // back
1691                         v3s16(1,0,0), // right
1692                         v3s16(0,0,-1), // front
1693                         v3s16(-1,0,0), // left
1694                 };
1695                 for(u16 i=0; i<5; i++)
1696                 {
1697                         bool to_bottom = (i == 0);
1698
1699                         // If liquid is at lowest possible height, it's not going
1700                         // anywhere except down
1701                         if(liquid_level == 0 && to_bottom == false)
1702                                 continue;
1703
1704                         u8 liquid_next_level = 0;
1705                         // If going to bottom
1706                         if(to_bottom)
1707                         {
1708                                 //liquid_next_level = 7;
1709                                 if(liquid_level >= 7 - WATER_DROP_BOOST)
1710                                         liquid_next_level = 7;
1711                                 else
1712                                         liquid_next_level = liquid_level + WATER_DROP_BOOST;
1713                         }
1714                         else
1715                                 liquid_next_level = liquid_level - 1;
1716
1717                         bool n2_changed = false;
1718                         bool flowed = false;
1719
1720                         v3s16 p2 = p0 + dirs_to[i];
1721
1722                         MapNode n2 = getNodeNoEx(p2);
1723                         //dstream<<"[1] n2.param="<<(int)n2.param<<std::endl;
1724
1725                         if(content_liquid(n2.d))
1726                         {
1727                                 u8 n2_nonsource_c = make_liquid_flowing(n2.d);
1728                                 // Check that the liquids are the same type
1729                                 if(n2_nonsource_c != nonsource_c)
1730                                 {
1731                                         dstream<<"WARNING: Not handling: different liquids"
1732                                                         " collide"<<std::endl;
1733                                         continue;
1734                                 }
1735                                 bool n2_is_source = !content_flowing_liquid(n2.d);
1736                                 u8 n2_liquid_level = 8;
1737                                 if(n2_is_source == false)
1738                                         n2_liquid_level = n2.param2 & 0x07;
1739
1740                                 if(to_bottom)
1741                                 {
1742                                         flowed = true;
1743                                 }
1744
1745                                 if(n2_is_source)
1746                                 {
1747                                         // Just flow into the source, nothing changes.
1748                                         // n2_changed is not set because destination didn't change
1749                                         flowed = true;
1750                                 }
1751                                 else
1752                                 {
1753                                         if(liquid_next_level > liquid_level)
1754                                         {
1755                                                 n2.param2 = liquid_next_level;
1756                                                 setNode(p2, n2);
1757
1758                                                 n2_changed = true;
1759                                                 flowed = true;
1760                                         }
1761                                 }
1762                         }
1763                         else if(n2.d == CONTENT_AIR)
1764                         {
1765                                 n2.d = nonsource_c;
1766                                 n2.param2 = liquid_next_level;
1767                                 setNode(p2, n2);
1768
1769                                 n2_changed = true;
1770                                 flowed = true;
1771                         }
1772
1773                         //dstream<<"[2] n2.param="<<(int)n2.param<<std::endl;
1774
1775                         if(n2_changed)
1776                         {
1777                                 m_transforming_liquid.push_back(p2);
1778
1779                                 v3s16 blockpos = getNodeBlockPos(p2);
1780                                 MapBlock *block = getBlockNoCreateNoEx(blockpos);
1781                                 if(block != NULL)
1782                                         modified_blocks.insert(blockpos, block);
1783                         }
1784
1785                         // If n2_changed to bottom, don't flow anywhere else
1786                         if(to_bottom && flowed && !is_source)
1787                                 break;
1788                 }
1789
1790                 loopcount++;
1791                 //if(loopcount >= 100000)
1792                 if(loopcount >= initial_size * 1)
1793                         break;
1794         }
1795         //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
1796 }
1797
1798 NodeMetadata* Map::getNodeMetadata(v3s16 p)
1799 {
1800         v3s16 blockpos = getNodeBlockPos(p);
1801         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1802         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1803         if(block == NULL)
1804         {
1805                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1806                                 <<std::endl;
1807                 return NULL;
1808         }
1809         NodeMetadata *meta = block->m_node_metadata.get(p_rel);
1810         return meta;
1811 }
1812
1813 void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
1814 {
1815         v3s16 blockpos = getNodeBlockPos(p);
1816         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1817         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1818         if(block == NULL)
1819         {
1820                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1821                                 <<std::endl;
1822                 return;
1823         }
1824         block->m_node_metadata.set(p_rel, meta);
1825 }
1826
1827 void Map::removeNodeMetadata(v3s16 p)
1828 {
1829         v3s16 blockpos = getNodeBlockPos(p);
1830         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1831         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1832         if(block == NULL)
1833         {
1834                 dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
1835                                 <<std::endl;
1836                 return;
1837         }
1838         block->m_node_metadata.remove(p_rel);
1839 }
1840
1841 void Map::nodeMetadataStep(float dtime,
1842                 core::map<v3s16, MapBlock*> &changed_blocks)
1843 {
1844         /*
1845                 NOTE:
1846                 Currently there is no way to ensure that all the necessary
1847                 blocks are loaded when this is run. (They might get unloaded)
1848                 NOTE: ^- Actually, that might not be so. In a quick test it
1849                 reloaded a block with a furnace when I walked back to it from
1850                 a distance.
1851         */
1852         core::map<v2s16, MapSector*>::Iterator si;
1853         si = m_sectors.getIterator();
1854         for(; si.atEnd() == false; si++)
1855         {
1856                 MapSector *sector = si.getNode()->getValue();
1857                 core::list< MapBlock * > sectorblocks;
1858                 sector->getBlocks(sectorblocks);
1859                 core::list< MapBlock * >::Iterator i;
1860                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
1861                 {
1862                         MapBlock *block = *i;
1863                         bool changed = block->m_node_metadata.step(dtime);
1864                         if(changed)
1865                                 changed_blocks[block->getPos()] = block;
1866                 }
1867         }
1868 }
1869
1870 /*
1871         ServerMap
1872 */
1873
1874 ServerMap::ServerMap(std::string savedir):
1875         Map(dout_server),
1876         m_seed(0),
1877         m_map_metadata_changed(true)
1878 {
1879         dstream<<__FUNCTION_NAME<<std::endl;
1880
1881         //m_chunksize = 8; // Takes a few seconds
1882
1883         m_seed = (((u64)(myrand()%0xffff)<<0)
1884                         + ((u64)(myrand()%0xffff)<<16)
1885                         + ((u64)(myrand()%0xffff)<<32)
1886                         + ((u64)(myrand()%0xffff)<<48));
1887
1888         /*
1889                 Experimental and debug stuff
1890         */
1891
1892         {
1893         }
1894
1895         /*
1896                 Try to load map; if not found, create a new one.
1897         */
1898
1899         m_savedir = savedir;
1900         m_map_saving_enabled = false;
1901
1902         try
1903         {
1904                 // If directory exists, check contents and load if possible
1905                 if(fs::PathExists(m_savedir))
1906                 {
1907                         // If directory is empty, it is safe to save into it.
1908                         if(fs::GetDirListing(m_savedir).size() == 0)
1909                         {
1910                                 dstream<<DTIME<<"Server: Empty save directory is valid."
1911                                                 <<std::endl;
1912                                 m_map_saving_enabled = true;
1913                         }
1914                         else
1915                         {
1916                                 try{
1917                                         // Load map metadata (seed, chunksize)
1918                                         loadMapMeta();
1919                                 }
1920                                 catch(FileNotGoodException &e){
1921                                         dstream<<DTIME<<"WARNING: Could not load map metadata"
1922                                                         //<<" Disabling chunk-based generator."
1923                                                         <<std::endl;
1924                                         //m_chunksize = 0;
1925                                 }
1926
1927                                 /*try{
1928                                         // Load chunk metadata
1929                                         loadChunkMeta();
1930                                 }
1931                                 catch(FileNotGoodException &e){
1932                                         dstream<<DTIME<<"WARNING: Could not load chunk metadata."
1933                                                         <<" Disabling chunk-based generator."
1934                                                         <<std::endl;
1935                                         m_chunksize = 0;
1936                                 }*/
1937
1938                                 /*dstream<<DTIME<<"Server: Successfully loaded chunk "
1939                                                 "metadata and sector (0,0) from "<<savedir<<
1940                                                 ", assuming valid save directory."
1941                                                 <<std::endl;*/
1942
1943                                 dstream<<DTIME<<"INFO: Server: Successfully loaded map "
1944                                                 <<"and chunk metadata from "<<savedir
1945                                                 <<", assuming valid save directory."
1946                                                 <<std::endl;
1947
1948                                 m_map_saving_enabled = true;
1949                                 // Map loaded, not creating new one
1950                                 return;
1951                         }
1952                 }
1953                 // If directory doesn't exist, it is safe to save to it
1954                 else{
1955                         m_map_saving_enabled = true;
1956                 }
1957         }
1958         catch(std::exception &e)
1959         {
1960                 dstream<<DTIME<<"WARNING: Server: Failed to load map from "<<savedir
1961                                 <<", exception: "<<e.what()<<std::endl;
1962                 dstream<<"Please remove the map or fix it."<<std::endl;
1963                 dstream<<"WARNING: Map saving will be disabled."<<std::endl;
1964         }
1965
1966         dstream<<DTIME<<"INFO: Initializing new map."<<std::endl;
1967
1968         // Create zero sector
1969         emergeSector(v2s16(0,0));
1970
1971         // Initially write whole map
1972         save(false);
1973 }
1974
1975 ServerMap::~ServerMap()
1976 {
1977         dstream<<__FUNCTION_NAME<<std::endl;
1978
1979         try
1980         {
1981                 if(m_map_saving_enabled)
1982                 {
1983                         // Save only changed parts
1984                         save(true);
1985                         dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
1986                 }
1987                 else
1988                 {
1989                         dstream<<DTIME<<"Server: map not saved"<<std::endl;
1990                 }
1991         }
1992         catch(std::exception &e)
1993         {
1994                 dstream<<DTIME<<"Server: Failed to save map to "<<m_savedir
1995                                 <<", exception: "<<e.what()<<std::endl;
1996         }
1997
1998 #if 0
1999         /*
2000                 Free all MapChunks
2001         */
2002         core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
2003         for(; i.atEnd() == false; i++)
2004         {
2005                 MapChunk *chunk = i.getNode()->getValue();
2006                 delete chunk;
2007         }
2008 #endif
2009 }
2010
2011 void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
2012 {
2013         /*dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2014                         <<blockpos.Z<<")"<<std::endl;*/
2015
2016         data->no_op = false;
2017         data->seed = m_seed;
2018         data->blockpos = blockpos;
2019
2020         /*
2021                 Create the whole area of this and the neighboring blocks
2022         */
2023         {
2024                 //TimeTaker timer("initBlockMake() create area");
2025
2026                 for(s16 x=-1; x<=1; x++)
2027                 for(s16 z=-1; z<=1; z++)
2028                 {
2029                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2030                         // Sector metadata is loaded from disk if not already loaded.
2031                         ServerMapSector *sector = createSector(sectorpos);
2032                         assert(sector);
2033
2034                         for(s16 y=-1; y<=1; y++)
2035                         {
2036                                 MapBlock *block = createBlock(blockpos);
2037
2038                                 // Lighting won't be calculated
2039                                 block->setLightingExpired(true);
2040                                 // Lighting will be calculated
2041                                 //block->setLightingExpired(false);
2042
2043                                 /*
2044                                         Block gets sunlight if this is true.
2045
2046                                         This should be set to true when the top side of a block
2047                                         is completely exposed to the sky.
2048                                 */
2049                                 block->setIsUnderground(false);
2050                         }
2051                 }
2052         }
2053
2054         /*
2055                 Now we have a big empty area.
2056
2057                 Make a ManualMapVoxelManipulator that contains this and the
2058                 neighboring blocks
2059         */
2060
2061         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2062         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2063
2064         data->vmanip = new ManualMapVoxelManipulator(this);
2065         //data->vmanip->setMap(this);
2066
2067         // Add the area
2068         {
2069                 //TimeTaker timer("initBlockMake() initialEmerge");
2070                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2071         }
2072
2073         // Data is ready now.
2074 }
2075
2076 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2077                 core::map<v3s16, MapBlock*> &changed_blocks)
2078 {
2079         v3s16 blockpos = data->blockpos;
2080         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2081                         <<blockpos.Z<<")"<<std::endl;*/
2082
2083         if(data->no_op)
2084         {
2085                 dstream<<"finishBlockMake(): no-op"<<std::endl;
2086                 return NULL;
2087         }
2088
2089         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2090
2091         /*dstream<<"Resulting vmanip:"<<std::endl;
2092         data->vmanip.print(dstream);*/
2093
2094         /*
2095                 Blit generated stuff to map
2096                 NOTE: blitBackAll adds nearly everything to changed_blocks
2097         */
2098         {
2099                 // 70ms @cs=8
2100                 //TimeTaker timer("finishBlockMake() blitBackAll");
2101                 data->vmanip->blitBackAll(&changed_blocks);
2102         }
2103
2104         if(enable_mapgen_debug_info)
2105                 dstream<<"finishBlockMake: changed_blocks.size()="
2106                                 <<changed_blocks.size()<<std::endl;
2107
2108         /*
2109                 Copy transforming liquid information
2110         */
2111         while(data->transforming_liquid.size() > 0)
2112         {
2113                 v3s16 p = data->transforming_liquid.pop_front();
2114                 m_transforming_liquid.push_back(p);
2115         }
2116
2117         /*
2118                 Get central block
2119         */
2120         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2121         assert(block);
2122
2123         /*
2124                 Set is_underground flag for lighting with sunlight
2125         */
2126
2127         block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2128
2129         /*
2130                 Add sunlight to central block.
2131                 This makes in-dark-spawning monsters to not flood the whole thing.
2132                 Do not spread the light, though.
2133         */
2134         /*core::map<v3s16, bool> light_sources;
2135         bool black_air_left = false;
2136         block->propagateSunlight(light_sources, true, &black_air_left);*/
2137
2138         /*
2139                 NOTE: Lighting and object adding shouldn't really be here, but
2140                 lighting is a bit tricky to move properly to makeBlock.
2141                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2142                       - There needs to be some way for makeBlock to report back if
2143                             the lighting update is going further down because of the
2144                                 new block blocking light
2145         */
2146
2147         /*
2148                 Update lighting
2149                 NOTE: This takes ~60ms, TODO: Investigate why
2150         */
2151         {
2152                 TimeTaker t("finishBlockMake lighting update");
2153
2154                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2155                 // Center block
2156                 lighting_update_blocks.insert(block->getPos(), block);
2157         #if 0
2158                 // All modified blocks
2159                 for(core::map<v3s16, MapBlock*>::Iterator
2160                                 i = changed_blocks.getIterator();
2161                                 i.atEnd() == false; i++)
2162                 {
2163                         lighting_update_blocks.insert(i.getNode()->getKey(),
2164                                         i.getNode()->getValue());
2165                 }
2166         #endif
2167                 updateLighting(lighting_update_blocks, changed_blocks);
2168
2169                 if(enable_mapgen_debug_info == false)
2170                         t.stop(true); // Hide output
2171         }
2172
2173         /*
2174                 Add random objects to block
2175         */
2176         mapgen::add_random_objects(block);
2177
2178         /*
2179                 Go through changed blocks
2180         */
2181         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2182                         i.atEnd() == false; i++)
2183         {
2184                 MapBlock *block = i.getNode()->getValue();
2185                 assert(block);
2186                 /*
2187                         Update day/night difference cache of the MapBlocks
2188                 */
2189                 block->updateDayNightDiff();
2190                 /*
2191                         Set block as modified
2192                 */
2193                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2194         }
2195
2196         /*
2197                 Set central block as generated
2198         */
2199         block->setGenerated(true);
2200
2201         /*
2202                 Save changed parts of map
2203                 NOTE: Will be saved later.
2204         */
2205         //save(true);
2206
2207         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2208                         <<blockpos.Z<<")"<<std::endl;*/
2209
2210         return block;
2211 }
2212
2213 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2214 {
2215         DSTACKF("%s: p2d=(%d,%d)",
2216                         __FUNCTION_NAME,
2217                         p2d.X, p2d.Y);
2218
2219         /*
2220                 Check if it exists already in memory
2221         */
2222         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2223         if(sector != NULL)
2224                 return sector;
2225
2226         /*
2227                 Try to load it from disk (with blocks)
2228         */
2229         //if(loadSectorFull(p2d) == true)
2230
2231         /*
2232                 Try to load metadata from disk
2233         */
2234         if(loadSectorMeta(p2d) == true)
2235         {
2236                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2237                 if(sector == NULL)
2238                 {
2239                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2240                         throw InvalidPositionException("");
2241                 }
2242                 return sector;
2243         }
2244
2245         /*
2246                 Do not create over-limit
2247         */
2248         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2249         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2250         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2251         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2252                 throw InvalidPositionException("createSector(): pos. over limit");
2253
2254         /*
2255                 Generate blank sector
2256         */
2257
2258         sector = new ServerMapSector(this, p2d);
2259
2260         // Sector position on map in nodes
2261         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2262
2263         /*
2264                 Insert to container
2265         */
2266         m_sectors.insert(p2d, sector);
2267
2268         return sector;
2269 }
2270
2271 /*
2272         This is a quick-hand function for calling makeBlock().
2273 */
2274 MapBlock * ServerMap::generateBlock(
2275                 v3s16 p,
2276                 core::map<v3s16, MapBlock*> &modified_blocks
2277 )
2278 {
2279         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2280
2281         /*dstream<<"generateBlock(): "
2282                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2283                         <<std::endl;*/
2284
2285         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2286
2287         TimeTaker timer("generateBlock");
2288
2289         //MapBlock *block = original_dummy;
2290
2291         v2s16 p2d(p.X, p.Z);
2292         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2293
2294         /*
2295                 Do not generate over-limit
2296         */
2297         if(blockpos_over_limit(p))
2298         {
2299                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2300                 throw InvalidPositionException("generateBlock(): pos. over limit");
2301         }
2302
2303         /*
2304                 Create block make data
2305         */
2306         mapgen::BlockMakeData data;
2307         initBlockMake(&data, p);
2308
2309         /*
2310                 Generate block
2311         */
2312         {
2313                 TimeTaker t("mapgen::make_block()");
2314                 mapgen::make_block(&data);
2315
2316                 if(enable_mapgen_debug_info == false)
2317                         t.stop(true); // Hide output
2318         }
2319
2320         /*
2321                 Blit data back on map, update lighting, add mobs and whatever this does
2322         */
2323         finishBlockMake(&data, modified_blocks);
2324
2325         /*
2326                 Get central block
2327         */
2328         MapBlock *block = getBlockNoCreateNoEx(p);
2329         assert(block);
2330
2331 #if 0
2332         /*
2333                 Check result
2334         */
2335         bool erroneus_content = false;
2336         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2337         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2338         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2339         {
2340                 v3s16 p(x0,y0,z0);
2341                 MapNode n = block->getNode(p);
2342                 if(n.d == CONTENT_IGNORE)
2343                 {
2344                         dstream<<"CONTENT_IGNORE at "
2345                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2346                                         <<std::endl;
2347                         erroneus_content = true;
2348                         assert(0);
2349                 }
2350         }
2351         if(erroneus_content)
2352         {
2353                 assert(0);
2354         }
2355 #endif
2356
2357 #if 0
2358         /*
2359                 Generate a completely empty block
2360         */
2361         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2362         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2363         {
2364                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2365                 {
2366                         MapNode n;
2367                         if(y0%2==0)
2368                                 n.d = CONTENT_AIR;
2369                         else
2370                                 n.d = CONTENT_STONE;
2371                         block->setNode(v3s16(x0,y0,z0), n);
2372                 }
2373         }
2374 #endif
2375
2376         if(enable_mapgen_debug_info == false)
2377                 timer.stop(true); // Hide output
2378
2379         return block;
2380 }
2381
2382 MapBlock * ServerMap::createBlock(v3s16 p)
2383 {
2384         DSTACKF("%s: p=(%d,%d,%d)",
2385                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2386
2387         /*
2388                 Do not create over-limit
2389         */
2390         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2391         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2392         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2393         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2394         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2395         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2396                 throw InvalidPositionException("createBlock(): pos. over limit");
2397
2398         v2s16 p2d(p.X, p.Z);
2399         s16 block_y = p.Y;
2400         /*
2401                 This will create or load a sector if not found in memory.
2402                 If block exists on disk, it will be loaded.
2403
2404                 NOTE: On old save formats, this will be slow, as it generates
2405                       lighting on blocks for them.
2406         */
2407         ServerMapSector *sector;
2408         try{
2409                 sector = (ServerMapSector*)createSector(p2d);
2410                 assert(sector->getId() == MAPSECTOR_SERVER);
2411         }
2412         catch(InvalidPositionException &e)
2413         {
2414                 dstream<<"createBlock: createSector() failed"<<std::endl;
2415                 throw e;
2416         }
2417         /*
2418                 NOTE: This should not be done, or at least the exception
2419                 should not be passed on as std::exception, because it
2420                 won't be catched at all.
2421         */
2422         /*catch(std::exception &e)
2423         {
2424                 dstream<<"createBlock: createSector() failed: "
2425                                 <<e.what()<<std::endl;
2426                 throw e;
2427         }*/
2428
2429         /*
2430                 Try to get a block from the sector
2431         */
2432
2433         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2434         if(block)
2435         {
2436                 if(block->isDummy())
2437                         block->unDummify();
2438                 return block;
2439         }
2440         // Create blank
2441         block = sector->createBlankBlock(block_y);
2442         return block;
2443 }
2444
2445 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2446 {
2447         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2448                         __FUNCTION_NAME,
2449                         p.X, p.Y, p.Z, allow_generate);
2450
2451         {
2452                 MapBlock *block = getBlockNoCreateNoEx(p);
2453                 if(block)
2454                         return block;
2455         }
2456
2457         {
2458                 MapBlock *block = loadBlock(p);
2459                 if(block)
2460                         return block;
2461         }
2462
2463         if(allow_generate)
2464         {
2465                 core::map<v3s16, MapBlock*> modified_blocks;
2466                 MapBlock *block = generateBlock(p, modified_blocks);
2467                 if(block)
2468                 {
2469                         MapEditEvent event;
2470                         event.type = MEET_OTHER;
2471                         event.p = p;
2472
2473                         // Copy modified_blocks to event
2474                         for(core::map<v3s16, MapBlock*>::Iterator
2475                                         i = modified_blocks.getIterator();
2476                                         i.atEnd()==false; i++)
2477                         {
2478                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2479                         }
2480
2481                         // Queue event
2482                         dispatchEvent(&event);
2483
2484                         return block;
2485                 }
2486         }
2487
2488         return NULL;
2489 }
2490
2491 #if 0
2492         /*
2493                 Do not generate over-limit
2494         */
2495         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2496         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2497         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2498         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2499         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2500         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2501                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2502
2503         v2s16 p2d(p.X, p.Z);
2504         s16 block_y = p.Y;
2505         /*
2506                 This will create or load a sector if not found in memory.
2507                 If block exists on disk, it will be loaded.
2508         */
2509         ServerMapSector *sector;
2510         try{
2511                 sector = createSector(p2d);
2512                 //sector = emergeSector(p2d, changed_blocks);
2513         }
2514         catch(InvalidPositionException &e)
2515         {
2516                 dstream<<"emergeBlock: createSector() failed: "
2517                                 <<e.what()<<std::endl;
2518                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2519                                 <<std::endl
2520                                 <<"You could try to delete it."<<std::endl;
2521                 throw e;
2522         }
2523         catch(VersionMismatchException &e)
2524         {
2525                 dstream<<"emergeBlock: createSector() failed: "
2526                                 <<e.what()<<std::endl;
2527                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2528                                 <<std::endl
2529                                 <<"You could try to delete it."<<std::endl;
2530                 throw e;
2531         }
2532
2533         /*
2534                 Try to get a block from the sector
2535         */
2536
2537         bool does_not_exist = false;
2538         bool lighting_expired = false;
2539         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2540
2541         // If not found, try loading from disk
2542         if(block == NULL)
2543         {
2544                 block = loadBlock(p);
2545         }
2546
2547         // Handle result
2548         if(block == NULL)
2549         {
2550                 does_not_exist = true;
2551         }
2552         else if(block->isDummy() == true)
2553         {
2554                 does_not_exist = true;
2555         }
2556         else if(block->getLightingExpired())
2557         {
2558                 lighting_expired = true;
2559         }
2560         else
2561         {
2562                 // Valid block
2563                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2564                 return block;
2565         }
2566
2567         /*
2568                 If block was not found on disk and not going to generate a
2569                 new one, make sure there is a dummy block in place.
2570         */
2571         if(only_from_disk && (does_not_exist || lighting_expired))
2572         {
2573                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2574
2575                 if(block == NULL)
2576                 {
2577                         // Create dummy block
2578                         block = new MapBlock(this, p, true);
2579
2580                         // Add block to sector
2581                         sector->insertBlock(block);
2582                 }
2583                 // Done.
2584                 return block;
2585         }
2586
2587         //dstream<<"Not found on disk, generating."<<std::endl;
2588         // 0ms
2589         //TimeTaker("emergeBlock() generate");
2590
2591         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2592
2593         /*
2594                 If the block doesn't exist, generate the block.
2595         */
2596         if(does_not_exist)
2597         {
2598                 block = generateBlock(p, block, sector, changed_blocks,
2599                                 lighting_invalidated_blocks);
2600         }
2601
2602         if(lighting_expired)
2603         {
2604                 lighting_invalidated_blocks.insert(p, block);
2605         }
2606
2607 #if 0
2608         /*
2609                 Initially update sunlight
2610         */
2611         {
2612                 core::map<v3s16, bool> light_sources;
2613                 bool black_air_left = false;
2614                 bool bottom_invalid =
2615                                 block->propagateSunlight(light_sources, true,
2616                                 &black_air_left);
2617
2618                 // If sunlight didn't reach everywhere and part of block is
2619                 // above ground, lighting has to be properly updated
2620                 //if(black_air_left && some_part_underground)
2621                 if(black_air_left)
2622                 {
2623                         lighting_invalidated_blocks[block->getPos()] = block;
2624                 }
2625
2626                 if(bottom_invalid)
2627                 {
2628                         lighting_invalidated_blocks[block->getPos()] = block;
2629                 }
2630         }
2631 #endif
2632
2633         return block;
2634 }
2635 #endif
2636
2637 s16 ServerMap::findGroundLevel(v2s16 p2d)
2638 {
2639 #if 0
2640         /*
2641                 Uh, just do something random...
2642         */
2643         // Find existing map from top to down
2644         s16 max=63;
2645         s16 min=-64;
2646         v3s16 p(p2d.X, max, p2d.Y);
2647         for(; p.Y>min; p.Y--)
2648         {
2649                 MapNode n = getNodeNoEx(p);
2650                 if(n.d != CONTENT_IGNORE)
2651                         break;
2652         }
2653         if(p.Y == min)
2654                 goto plan_b;
2655         // If this node is not air, go to plan b
2656         if(getNodeNoEx(p).d != CONTENT_AIR)
2657                 goto plan_b;
2658         // Search existing walkable and return it
2659         for(; p.Y>min; p.Y--)
2660         {
2661                 MapNode n = getNodeNoEx(p);
2662                 if(content_walkable(n.d) && n.d != CONTENT_IGNORE)
2663                         return p.Y;
2664         }
2665
2666         // Move to plan b
2667 plan_b:
2668 #endif
2669
2670         /*
2671                 Determine from map generator noise functions
2672         */
2673
2674         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2675         return level;
2676
2677         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2678         //return (s16)level;
2679 }
2680
2681 void ServerMap::createDirs(std::string path)
2682 {
2683         if(fs::CreateAllDirs(path) == false)
2684         {
2685                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2686                                 <<"\""<<path<<"\""<<std::endl;
2687                 throw BaseException("ServerMap failed to create directory");
2688         }
2689 }
2690
2691 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2692 {
2693         char cc[9];
2694         switch(layout)
2695         {
2696                 case 1:
2697                         snprintf(cc, 9, "%.4x%.4x",
2698                                 (unsigned int)pos.X&0xffff,
2699                                 (unsigned int)pos.Y&0xffff);
2700
2701                         return m_savedir + "/sectors/" + cc;
2702                 case 2:
2703                         snprintf(cc, 9, "%.3x/%.3x",
2704                                 (unsigned int)pos.X&0xfff,
2705                                 (unsigned int)pos.Y&0xfff);
2706
2707                         return m_savedir + "/sectors2/" + cc;
2708                 default:
2709                         assert(false);
2710         }
2711 }
2712
2713 v2s16 ServerMap::getSectorPos(std::string dirname)
2714 {
2715         unsigned int x, y;
2716         int r;
2717         size_t spos = dirname.rfind('/') + 1;
2718         assert(spos != std::string::npos);
2719         if(dirname.size() - spos == 8)
2720         {
2721                 // Old layout
2722                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2723         }
2724         else if(dirname.size() - spos == 3)
2725         {
2726                 // New layout
2727                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2728                 // Sign-extend the 12 bit values up to 16 bits...
2729                 if(x&0x800) x|=0xF000;
2730                 if(y&0x800) y|=0xF000;
2731         }
2732         else
2733         {
2734                 assert(false);
2735         }
2736         assert(r == 2);
2737         v2s16 pos((s16)x, (s16)y);
2738         return pos;
2739 }
2740
2741 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2742 {
2743         v2s16 p2d = getSectorPos(sectordir);
2744
2745         if(blockfile.size() != 4){
2746                 throw InvalidFilenameException("Invalid block filename");
2747         }
2748         unsigned int y;
2749         int r = sscanf(blockfile.c_str(), "%4x", &y);
2750         if(r != 1)
2751                 throw InvalidFilenameException("Invalid block filename");
2752         return v3s16(p2d.X, y, p2d.Y);
2753 }
2754
2755 std::string ServerMap::getBlockFilename(v3s16 p)
2756 {
2757         char cc[5];
2758         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2759         return cc;
2760 }
2761
2762 void ServerMap::save(bool only_changed)
2763 {
2764         DSTACK(__FUNCTION_NAME);
2765         if(m_map_saving_enabled == false)
2766         {
2767                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2768                 return;
2769         }
2770
2771         if(only_changed == false)
2772                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2773                                 <<std::endl;
2774
2775         if(only_changed == false || m_map_metadata_changed)
2776         {
2777                 saveMapMeta();
2778         }
2779
2780         u32 sector_meta_count = 0;
2781         u32 block_count = 0;
2782         u32 block_count_all = 0; // Number of blocks in memory
2783
2784         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2785         for(; i.atEnd() == false; i++)
2786         {
2787                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2788                 assert(sector->getId() == MAPSECTOR_SERVER);
2789
2790                 if(sector->differs_from_disk || only_changed == false)
2791                 {
2792                         saveSectorMeta(sector);
2793                         sector_meta_count++;
2794                 }
2795                 core::list<MapBlock*> blocks;
2796                 sector->getBlocks(blocks);
2797                 core::list<MapBlock*>::Iterator j;
2798                 for(j=blocks.begin(); j!=blocks.end(); j++)
2799                 {
2800                         MapBlock *block = *j;
2801
2802                         block_count_all++;
2803
2804                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2805                                         || only_changed == false)
2806                         {
2807                                 saveBlock(block);
2808                                 block_count++;
2809
2810                                 /*dstream<<"ServerMap: Written block ("
2811                                                 <<block->getPos().X<<","
2812                                                 <<block->getPos().Y<<","
2813                                                 <<block->getPos().Z<<")"
2814                                                 <<std::endl;*/
2815                         }
2816                 }
2817         }
2818
2819         /*
2820                 Only print if something happened or saved whole map
2821         */
2822         if(only_changed == false || sector_meta_count != 0
2823                         || block_count != 0)
2824         {
2825                 dstream<<DTIME<<"ServerMap: Written: "
2826                                 <<sector_meta_count<<" sector metadata files, "
2827                                 <<block_count<<" block files"
2828                                 <<", "<<block_count_all<<" blocks in memory."
2829                                 <<std::endl;
2830         }
2831 }
2832
2833 void ServerMap::saveMapMeta()
2834 {
2835         DSTACK(__FUNCTION_NAME);
2836
2837         dstream<<"INFO: ServerMap::saveMapMeta(): "
2838                         <<"seed="<<m_seed
2839                         <<std::endl;
2840
2841         createDirs(m_savedir);
2842
2843         std::string fullpath = m_savedir + "/map_meta.txt";
2844         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2845         if(os.good() == false)
2846         {
2847                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2848                                 <<"could not open"<<fullpath<<std::endl;
2849                 throw FileNotGoodException("Cannot open chunk metadata");
2850         }
2851
2852         Settings params;
2853         params.setU64("seed", m_seed);
2854
2855         params.writeLines(os);
2856
2857         os<<"[end_of_params]\n";
2858
2859         m_map_metadata_changed = false;
2860 }
2861
2862 void ServerMap::loadMapMeta()
2863 {
2864         DSTACK(__FUNCTION_NAME);
2865
2866         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2867                         <<std::endl;
2868
2869         std::string fullpath = m_savedir + "/map_meta.txt";
2870         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2871         if(is.good() == false)
2872         {
2873                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2874                                 <<"could not open"<<fullpath<<std::endl;
2875                 throw FileNotGoodException("Cannot open map metadata");
2876         }
2877
2878         Settings params;
2879
2880         for(;;)
2881         {
2882                 if(is.eof())
2883                         throw SerializationError
2884                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2885                 std::string line;
2886                 std::getline(is, line);
2887                 std::string trimmedline = trim(line);
2888                 if(trimmedline == "[end_of_params]")
2889                         break;
2890                 params.parseConfigLine(line);
2891         }
2892
2893         m_seed = params.getU64("seed");
2894
2895         dstream<<"INFO: ServerMap::loadMapMeta(): "
2896                         <<"seed="<<m_seed
2897                         <<std::endl;
2898 }
2899
2900 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2901 {
2902         DSTACK(__FUNCTION_NAME);
2903         // Format used for writing
2904         u8 version = SER_FMT_VER_HIGHEST;
2905         // Get destination
2906         v2s16 pos = sector->getPos();
2907         std::string dir = getSectorDir(pos);
2908         createDirs(dir);
2909
2910         std::string fullpath = dir + "/meta";
2911         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2912         if(o.good() == false)
2913                 throw FileNotGoodException("Cannot open sector metafile");
2914
2915         sector->serialize(o, version);
2916
2917         sector->differs_from_disk = false;
2918 }
2919
2920 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
2921 {
2922         DSTACK(__FUNCTION_NAME);
2923         // Get destination
2924         v2s16 p2d = getSectorPos(sectordir);
2925
2926         ServerMapSector *sector = NULL;
2927
2928         std::string fullpath = sectordir + "/meta";
2929         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2930         if(is.good() == false)
2931         {
2932                 // If the directory exists anyway, it probably is in some old
2933                 // format. Just go ahead and create the sector.
2934                 if(fs::PathExists(sectordir))
2935                 {
2936                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
2937                                         <<fullpath<<" doesn't exist but directory does."
2938                                         <<" Continuing with a sector with no metadata."
2939                                         <<std::endl;*/
2940                         sector = new ServerMapSector(this, p2d);
2941                         m_sectors.insert(p2d, sector);
2942                 }
2943                 else
2944                 {
2945                         throw FileNotGoodException("Cannot open sector metafile");
2946                 }
2947         }
2948         else
2949         {
2950                 sector = ServerMapSector::deSerialize
2951                                 (is, this, p2d, m_sectors);
2952                 if(save_after_load)
2953                         saveSectorMeta(sector);
2954         }
2955
2956         sector->differs_from_disk = false;
2957
2958         return sector;
2959 }
2960
2961 bool ServerMap::loadSectorMeta(v2s16 p2d)
2962 {
2963         DSTACK(__FUNCTION_NAME);
2964
2965         MapSector *sector = NULL;
2966
2967         // The directory layout we're going to load from.
2968         //  1 - original sectors/xxxxzzzz/
2969         //  2 - new sectors2/xxx/zzz/
2970         //  If we load from anything but the latest structure, we will
2971         //  immediately save to the new one, and remove the old.
2972         int loadlayout = 1;
2973         std::string sectordir1 = getSectorDir(p2d, 1);
2974         std::string sectordir;
2975         if(fs::PathExists(sectordir1))
2976         {
2977                 sectordir = sectordir1;
2978         }
2979         else
2980         {
2981                 loadlayout = 2;
2982                 sectordir = getSectorDir(p2d, 2);
2983         }
2984
2985         try{
2986                 sector = loadSectorMeta(sectordir, loadlayout != 2);
2987         }
2988         catch(InvalidFilenameException &e)
2989         {
2990                 return false;
2991         }
2992         catch(FileNotGoodException &e)
2993         {
2994                 return false;
2995         }
2996         catch(std::exception &e)
2997         {
2998                 return false;
2999         }
3000
3001         return true;
3002 }
3003
3004 #if 0
3005 bool ServerMap::loadSectorFull(v2s16 p2d)
3006 {
3007         DSTACK(__FUNCTION_NAME);
3008
3009         MapSector *sector = NULL;
3010
3011         // The directory layout we're going to load from.
3012         //  1 - original sectors/xxxxzzzz/
3013         //  2 - new sectors2/xxx/zzz/
3014         //  If we load from anything but the latest structure, we will
3015         //  immediately save to the new one, and remove the old.
3016         int loadlayout = 1;
3017         std::string sectordir1 = getSectorDir(p2d, 1);
3018         std::string sectordir;
3019         if(fs::PathExists(sectordir1))
3020         {
3021                 sectordir = sectordir1;
3022         }
3023         else
3024         {
3025                 loadlayout = 2;
3026                 sectordir = getSectorDir(p2d, 2);
3027         }
3028
3029         try{
3030                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3031         }
3032         catch(InvalidFilenameException &e)
3033         {
3034                 return false;
3035         }
3036         catch(FileNotGoodException &e)
3037         {
3038                 return false;
3039         }
3040         catch(std::exception &e)
3041         {
3042                 return false;
3043         }
3044
3045         /*
3046                 Load blocks
3047         */
3048         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3049                         (sectordir);
3050         std::vector<fs::DirListNode>::iterator i2;
3051         for(i2=list2.begin(); i2!=list2.end(); i2++)
3052         {
3053                 // We want files
3054                 if(i2->dir)
3055                         continue;
3056                 try{
3057                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3058                 }
3059                 catch(InvalidFilenameException &e)
3060                 {
3061                         // This catches unknown crap in directory
3062                 }
3063         }
3064
3065         if(loadlayout != 2)
3066         {
3067                 dstream<<"Sector converted to new layout - deleting "<<
3068                         sectordir1<<std::endl;
3069                 fs::RecursiveDelete(sectordir1);
3070         }
3071
3072         return true;
3073 }
3074 #endif
3075
3076 void ServerMap::saveBlock(MapBlock *block)
3077 {
3078         DSTACK(__FUNCTION_NAME);
3079         /*
3080                 Dummy blocks are not written
3081         */
3082         if(block->isDummy())
3083         {
3084                 /*v3s16 p = block->getPos();
3085                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3086                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3087                 return;
3088         }
3089
3090         // Format used for writing
3091         u8 version = SER_FMT_VER_HIGHEST;
3092         // Get destination
3093         v3s16 p3d = block->getPos();
3094
3095         v2s16 p2d(p3d.X, p3d.Z);
3096         std::string sectordir = getSectorDir(p2d);
3097
3098         createDirs(sectordir);
3099
3100         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3101         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3102         if(o.good() == false)
3103                 throw FileNotGoodException("Cannot open block data");
3104
3105         /*
3106                 [0] u8 serialization version
3107                 [1] data
3108         */
3109         o.write((char*)&version, 1);
3110
3111         // Write basic data
3112         block->serialize(o, version);
3113
3114         // Write extra data stored on disk
3115         block->serializeDiskExtra(o, version);
3116
3117         // We just wrote it to the disk so clear modified flag
3118         block->resetModified();
3119 }
3120
3121 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3122 {
3123         DSTACK(__FUNCTION_NAME);
3124
3125         std::string fullpath = sectordir+"/"+blockfile;
3126         try{
3127
3128                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3129                 if(is.good() == false)
3130                         throw FileNotGoodException("Cannot open block file");
3131
3132                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3133                 v2s16 p2d(p3d.X, p3d.Z);
3134
3135                 assert(sector->getPos() == p2d);
3136
3137                 u8 version = SER_FMT_VER_INVALID;
3138                 is.read((char*)&version, 1);
3139
3140                 if(is.fail())
3141                         throw SerializationError("ServerMap::loadBlock(): Failed"
3142                                         " to read MapBlock version");
3143
3144                 /*u32 block_size = MapBlock::serializedLength(version);
3145                 SharedBuffer<u8> data(block_size);
3146                 is.read((char*)*data, block_size);*/
3147
3148                 // This will always return a sector because we're the server
3149                 //MapSector *sector = emergeSector(p2d);
3150
3151                 MapBlock *block = NULL;
3152                 bool created_new = false;
3153                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3154                 if(block == NULL)
3155                 {
3156                         block = sector->createBlankBlockNoInsert(p3d.Y);
3157                         created_new = true;
3158                 }
3159
3160                 // Read basic data
3161                 block->deSerialize(is, version);
3162
3163                 // Read extra data stored on disk
3164                 block->deSerializeDiskExtra(is, version);
3165
3166                 // If it's a new block, insert it to the map
3167                 if(created_new)
3168                         sector->insertBlock(block);
3169
3170                 /*
3171                         Save blocks loaded in old format in new format
3172                 */
3173
3174                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3175                 {
3176                         saveBlock(block);
3177                 }
3178
3179                 // We just loaded it from the disk, so it's up-to-date.
3180                 block->resetModified();
3181
3182         }
3183         catch(SerializationError &e)
3184         {
3185                 dstream<<"WARNING: Invalid block data on disk "
3186                                 <<"fullpath="<<fullpath
3187                                 <<" (SerializationError). "
3188                                 <<"what()="<<e.what()
3189                                 <<std::endl;
3190                                 //" Ignoring. A new one will be generated.
3191                 assert(0);
3192
3193                 // TODO: Backup file; name is in fullpath.
3194         }
3195 }
3196
3197 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3198 {
3199         DSTACK(__FUNCTION_NAME);
3200
3201         v2s16 p2d(blockpos.X, blockpos.Z);
3202
3203         // The directory layout we're going to load from.
3204         //  1 - original sectors/xxxxzzzz/
3205         //  2 - new sectors2/xxx/zzz/
3206         //  If we load from anything but the latest structure, we will
3207         //  immediately save to the new one, and remove the old.
3208         int loadlayout = 1;
3209         std::string sectordir1 = getSectorDir(p2d, 1);
3210         std::string sectordir;
3211         if(fs::PathExists(sectordir1))
3212         {
3213                 sectordir = sectordir1;
3214         }
3215         else
3216         {
3217                 loadlayout = 2;
3218                 sectordir = getSectorDir(p2d, 2);
3219         }
3220
3221         /*
3222                 Make sure sector is loaded
3223         */
3224         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3225         if(sector == NULL)
3226         {
3227                 try{
3228                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3229                 }
3230                 catch(InvalidFilenameException &e)
3231                 {
3232                         return false;
3233                 }
3234                 catch(FileNotGoodException &e)
3235                 {
3236                         return false;
3237                 }
3238                 catch(std::exception &e)
3239                 {
3240                         return false;
3241                 }
3242         }
3243
3244         /*
3245                 Make sure file exists
3246         */
3247
3248         std::string blockfilename = getBlockFilename(blockpos);
3249         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3250                 return NULL;
3251
3252         /*
3253                 Load block
3254         */
3255         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3256         return getBlockNoCreateNoEx(blockpos);
3257 }
3258
3259 void ServerMap::PrintInfo(std::ostream &out)
3260 {
3261         out<<"ServerMap: ";
3262 }
3263
3264 #ifndef SERVER
3265
3266 /*
3267         ClientMap
3268 */
3269
3270 ClientMap::ClientMap(
3271                 Client *client,
3272                 MapDrawControl &control,
3273                 scene::ISceneNode* parent,
3274                 scene::ISceneManager* mgr,
3275                 s32 id
3276 ):
3277         Map(dout_client),
3278         scene::ISceneNode(parent, mgr, id),
3279         m_client(client),
3280         m_control(control),
3281         m_camera_position(0,0,0),
3282         m_camera_direction(0,0,1)
3283 {
3284         m_camera_mutex.Init();
3285         assert(m_camera_mutex.IsInitialized());
3286
3287         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3288                         BS*1000000,BS*1000000,BS*1000000);
3289 }
3290
3291 ClientMap::~ClientMap()
3292 {
3293         /*JMutexAutoLock lock(mesh_mutex);
3294
3295         if(mesh != NULL)
3296         {
3297                 mesh->drop();
3298                 mesh = NULL;
3299         }*/
3300 }
3301
3302 MapSector * ClientMap::emergeSector(v2s16 p2d)
3303 {
3304         DSTACK(__FUNCTION_NAME);
3305         // Check that it doesn't exist already
3306         try{
3307                 return getSectorNoGenerate(p2d);
3308         }
3309         catch(InvalidPositionException &e)
3310         {
3311         }
3312
3313         // Create a sector
3314         ClientMapSector *sector = new ClientMapSector(this, p2d);
3315
3316         {
3317                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3318                 m_sectors.insert(p2d, sector);
3319         }
3320
3321         return sector;
3322 }
3323
3324 #if 0
3325 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3326 {
3327         DSTACK(__FUNCTION_NAME);
3328         ClientMapSector *sector = NULL;
3329
3330         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3331
3332         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3333
3334         if(n != NULL)
3335         {
3336                 sector = (ClientMapSector*)n->getValue();
3337                 assert(sector->getId() == MAPSECTOR_CLIENT);
3338         }
3339         else
3340         {
3341                 sector = new ClientMapSector(this, p2d);
3342                 {
3343                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3344                         m_sectors.insert(p2d, sector);
3345                 }
3346         }
3347
3348         sector->deSerialize(is);
3349 }
3350 #endif
3351
3352 void ClientMap::OnRegisterSceneNode()
3353 {
3354         if(IsVisible)
3355         {
3356                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3357                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3358         }
3359
3360         ISceneNode::OnRegisterSceneNode();
3361 }
3362
3363 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3364 {
3365         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3366         DSTACK(__FUNCTION_NAME);
3367
3368         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3369
3370         /*
3371                 This is called two times per frame, reset on the non-transparent one
3372         */
3373         if(pass == scene::ESNRP_SOLID)
3374         {
3375                 m_last_drawn_sectors.clear();
3376         }
3377
3378         /*
3379                 Get time for measuring timeout.
3380
3381                 Measuring time is very useful for long delays when the
3382                 machine is swapping a lot.
3383         */
3384         int time1 = time(0);
3385
3386         //u32 daynight_ratio = m_client->getDayNightRatio();
3387
3388         m_camera_mutex.Lock();
3389         v3f camera_position = m_camera_position;
3390         v3f camera_direction = m_camera_direction;
3391         m_camera_mutex.Unlock();
3392
3393         /*
3394                 Get all blocks and draw all visible ones
3395         */
3396
3397         v3s16 cam_pos_nodes(
3398                         camera_position.X / BS,
3399                         camera_position.Y / BS,
3400                         camera_position.Z / BS);
3401
3402         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3403
3404         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3405         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3406
3407         // Take a fair amount as we will be dropping more out later
3408         v3s16 p_blocks_min(
3409                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3410                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3411                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3412         v3s16 p_blocks_max(
3413                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3414                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3415                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3416
3417         u32 vertex_count = 0;
3418
3419         // For limiting number of mesh updates per frame
3420         u32 mesh_update_count = 0;
3421
3422         u32 blocks_would_have_drawn = 0;
3423         u32 blocks_drawn = 0;
3424
3425         int timecheck_counter = 0;
3426         core::map<v2s16, MapSector*>::Iterator si;
3427         si = m_sectors.getIterator();
3428         for(; si.atEnd() == false; si++)
3429         {
3430                 {
3431                         timecheck_counter++;
3432                         if(timecheck_counter > 50)
3433                         {
3434                                 timecheck_counter = 0;
3435                                 int time2 = time(0);
3436                                 if(time2 > time1 + 4)
3437                                 {
3438                                         dstream<<"ClientMap::renderMap(): "
3439                                                 "Rendering takes ages, returning."
3440                                                 <<std::endl;
3441                                         return;
3442                                 }
3443                         }
3444                 }
3445
3446                 MapSector *sector = si.getNode()->getValue();
3447                 v2s16 sp = sector->getPos();
3448
3449                 if(m_control.range_all == false)
3450                 {
3451                         if(sp.X < p_blocks_min.X
3452                         || sp.X > p_blocks_max.X
3453                         || sp.Y < p_blocks_min.Z
3454                         || sp.Y > p_blocks_max.Z)
3455                                 continue;
3456                 }
3457
3458                 core::list< MapBlock * > sectorblocks;
3459                 sector->getBlocks(sectorblocks);
3460
3461                 /*
3462                         Draw blocks
3463                 */
3464
3465                 u32 sector_blocks_drawn = 0;
3466
3467                 core::list< MapBlock * >::Iterator i;
3468                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3469                 {
3470                         MapBlock *block = *i;
3471
3472                         /*
3473                                 Compare block position to camera position, skip
3474                                 if not seen on display
3475                         */
3476
3477                         float range = 100000 * BS;
3478                         if(m_control.range_all == false)
3479                                 range = m_control.wanted_range * BS;
3480
3481                         float d = 0.0;
3482                         if(isBlockInSight(block->getPos(), camera_position,
3483                                         camera_direction, range, &d) == false)
3484                         {
3485                                 continue;
3486                         }
3487
3488                         // Okay, this block will be drawn. Reset usage timer.
3489                         block->resetUsageTimer();
3490
3491                         // This is ugly (spherical distance limit?)
3492                         /*if(m_control.range_all == false &&
3493                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3494                                 continue;*/
3495
3496 #if 1
3497                         /*
3498                                 Update expired mesh (used for day/night change)
3499
3500                                 It doesn't work exactly like it should now with the
3501                                 tasked mesh update but whatever.
3502                         */
3503
3504                         bool mesh_expired = false;
3505
3506                         {
3507                                 JMutexAutoLock lock(block->mesh_mutex);
3508
3509                                 mesh_expired = block->getMeshExpired();
3510
3511                                 // Mesh has not been expired and there is no mesh:
3512                                 // block has no content
3513                                 if(block->mesh == NULL && mesh_expired == false)
3514                                         continue;
3515                         }
3516
3517                         f32 faraway = BS*50;
3518                         //f32 faraway = m_control.wanted_range * BS;
3519
3520                         /*
3521                                 This has to be done with the mesh_mutex unlocked
3522                         */
3523                         // Pretty random but this should work somewhat nicely
3524                         if(mesh_expired && (
3525                                         (mesh_update_count < 3
3526                                                 && (d < faraway || mesh_update_count < 2)
3527                                         )
3528                                         ||
3529                                         (m_control.range_all && mesh_update_count < 20)
3530                                 )
3531                         )
3532                         /*if(mesh_expired && mesh_update_count < 6
3533                                         && (d < faraway || mesh_update_count < 3))*/
3534                         {
3535                                 mesh_update_count++;
3536
3537                                 // Mesh has been expired: generate new mesh
3538                                 //block->updateMesh(daynight_ratio);
3539                                 m_client->addUpdateMeshTask(block->getPos());
3540
3541                                 mesh_expired = false;
3542                         }
3543
3544 #endif
3545                         /*
3546                                 Draw the faces of the block
3547                         */
3548                         {
3549                                 JMutexAutoLock lock(block->mesh_mutex);
3550
3551                                 scene::SMesh *mesh = block->mesh;
3552
3553                                 if(mesh == NULL)
3554                                         continue;
3555
3556                                 blocks_would_have_drawn++;
3557                                 if(blocks_drawn >= m_control.wanted_max_blocks
3558                                                 && m_control.range_all == false
3559                                                 && d > m_control.wanted_min_range * BS)
3560                                         continue;
3561
3562                                 blocks_drawn++;
3563                                 sector_blocks_drawn++;
3564
3565                                 u32 c = mesh->getMeshBufferCount();
3566
3567                                 for(u32 i=0; i<c; i++)
3568                                 {
3569                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3570                                         const video::SMaterial& material = buf->getMaterial();
3571                                         video::IMaterialRenderer* rnd =
3572                                                         driver->getMaterialRenderer(material.MaterialType);
3573                                         bool transparent = (rnd && rnd->isTransparent());
3574                                         // Render transparent on transparent pass and likewise.
3575                                         if(transparent == is_transparent_pass)
3576                                         {
3577                                                 /*
3578                                                         This *shouldn't* hurt too much because Irrlicht
3579                                                         doesn't change opengl textures if the old
3580                                                         material is set again.
3581                                                 */
3582                                                 driver->setMaterial(buf->getMaterial());
3583                                                 driver->drawMeshBuffer(buf);
3584                                                 vertex_count += buf->getVertexCount();
3585                                         }
3586                                 }
3587                         }
3588                 } // foreach sectorblocks
3589
3590                 if(sector_blocks_drawn != 0)
3591                 {
3592                         m_last_drawn_sectors[sp] = true;
3593                 }
3594         }
3595
3596         m_control.blocks_drawn = blocks_drawn;
3597         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3598
3599         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3600                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3601 }
3602
3603 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3604                 core::map<v3s16, MapBlock*> *affected_blocks)
3605 {
3606         bool changed = false;
3607         /*
3608                 Add it to all blocks touching it
3609         */
3610         v3s16 dirs[7] = {
3611                 v3s16(0,0,0), // this
3612                 v3s16(0,0,1), // back
3613                 v3s16(0,1,0), // top
3614                 v3s16(1,0,0), // right
3615                 v3s16(0,0,-1), // front
3616                 v3s16(0,-1,0), // bottom
3617                 v3s16(-1,0,0), // left
3618         };
3619         for(u16 i=0; i<7; i++)
3620         {
3621                 v3s16 p2 = p + dirs[i];
3622                 // Block position of neighbor (or requested) node
3623                 v3s16 blockpos = getNodeBlockPos(p2);
3624                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3625                 if(blockref == NULL)
3626                         continue;
3627                 // Relative position of requested node
3628                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3629                 if(blockref->setTempMod(relpos, mod))
3630                 {
3631                         changed = true;
3632                 }
3633         }
3634         if(changed && affected_blocks!=NULL)
3635         {
3636                 for(u16 i=0; i<7; i++)
3637                 {
3638                         v3s16 p2 = p + dirs[i];
3639                         // Block position of neighbor (or requested) node
3640                         v3s16 blockpos = getNodeBlockPos(p2);
3641                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3642                         if(blockref == NULL)
3643                                 continue;
3644                         affected_blocks->insert(blockpos, blockref);
3645                 }
3646         }
3647         return changed;
3648 }
3649
3650 bool ClientMap::clearTempMod(v3s16 p,
3651                 core::map<v3s16, MapBlock*> *affected_blocks)
3652 {
3653         bool changed = false;
3654         v3s16 dirs[7] = {
3655                 v3s16(0,0,0), // this
3656                 v3s16(0,0,1), // back
3657                 v3s16(0,1,0), // top
3658                 v3s16(1,0,0), // right
3659                 v3s16(0,0,-1), // front
3660                 v3s16(0,-1,0), // bottom
3661                 v3s16(-1,0,0), // left
3662         };
3663         for(u16 i=0; i<7; i++)
3664         {
3665                 v3s16 p2 = p + dirs[i];
3666                 // Block position of neighbor (or requested) node
3667                 v3s16 blockpos = getNodeBlockPos(p2);
3668                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3669                 if(blockref == NULL)
3670                         continue;
3671                 // Relative position of requested node
3672                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3673                 if(blockref->clearTempMod(relpos))
3674                 {
3675                         changed = true;
3676                 }
3677         }
3678         if(changed && affected_blocks!=NULL)
3679         {
3680                 for(u16 i=0; i<7; i++)
3681                 {
3682                         v3s16 p2 = p + dirs[i];
3683                         // Block position of neighbor (or requested) node
3684                         v3s16 blockpos = getNodeBlockPos(p2);
3685                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3686                         if(blockref == NULL)
3687                                 continue;
3688                         affected_blocks->insert(blockpos, blockref);
3689                 }
3690         }
3691         return changed;
3692 }
3693
3694 void ClientMap::expireMeshes(bool only_daynight_diffed)
3695 {
3696         TimeTaker timer("expireMeshes()");
3697
3698         core::map<v2s16, MapSector*>::Iterator si;
3699         si = m_sectors.getIterator();
3700         for(; si.atEnd() == false; si++)
3701         {
3702                 MapSector *sector = si.getNode()->getValue();
3703
3704                 core::list< MapBlock * > sectorblocks;
3705                 sector->getBlocks(sectorblocks);
3706
3707                 core::list< MapBlock * >::Iterator i;
3708                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3709                 {
3710                         MapBlock *block = *i;
3711
3712                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3713                         {
3714                                 continue;
3715                         }
3716
3717                         {
3718                                 JMutexAutoLock lock(block->mesh_mutex);
3719                                 if(block->mesh != NULL)
3720                                 {
3721                                         /*block->mesh->drop();
3722                                         block->mesh = NULL;*/
3723                                         block->setMeshExpired(true);
3724                                 }
3725                         }
3726                 }
3727         }
3728 }
3729
3730 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3731 {
3732         assert(mapType() == MAPTYPE_CLIENT);
3733
3734         try{
3735                 v3s16 p = blockpos + v3s16(0,0,0);
3736                 MapBlock *b = getBlockNoCreate(p);
3737                 b->updateMesh(daynight_ratio);
3738                 //b->setMeshExpired(true);
3739         }
3740         catch(InvalidPositionException &e){}
3741         // Leading edge
3742         try{
3743                 v3s16 p = blockpos + v3s16(-1,0,0);
3744                 MapBlock *b = getBlockNoCreate(p);
3745                 b->updateMesh(daynight_ratio);
3746                 //b->setMeshExpired(true);
3747         }
3748         catch(InvalidPositionException &e){}
3749         try{
3750                 v3s16 p = blockpos + v3s16(0,-1,0);
3751                 MapBlock *b = getBlockNoCreate(p);
3752                 b->updateMesh(daynight_ratio);
3753                 //b->setMeshExpired(true);
3754         }
3755         catch(InvalidPositionException &e){}
3756         try{
3757                 v3s16 p = blockpos + v3s16(0,0,-1);
3758                 MapBlock *b = getBlockNoCreate(p);
3759                 b->updateMesh(daynight_ratio);
3760                 //b->setMeshExpired(true);
3761         }
3762         catch(InvalidPositionException &e){}
3763 }
3764
3765 #if 0
3766 /*
3767         Update mesh of block in which the node is, and if the node is at the
3768         leading edge, update the appropriate leading blocks too.
3769 */
3770 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3771 {
3772         v3s16 dirs[4] = {
3773                 v3s16(0,0,0),
3774                 v3s16(-1,0,0),
3775                 v3s16(0,-1,0),
3776                 v3s16(0,0,-1),
3777         };
3778         v3s16 blockposes[4];
3779         for(u32 i=0; i<4; i++)
3780         {
3781                 v3s16 np = nodepos + dirs[i];
3782                 blockposes[i] = getNodeBlockPos(np);
3783                 // Don't update mesh of block if it has been done already
3784                 bool already_updated = false;
3785                 for(u32 j=0; j<i; j++)
3786                 {
3787                         if(blockposes[j] == blockposes[i])
3788                         {
3789                                 already_updated = true;
3790                                 break;
3791                         }
3792                 }
3793                 if(already_updated)
3794                         continue;
3795                 // Update mesh
3796                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3797                 b->updateMesh(daynight_ratio);
3798         }
3799 }
3800 #endif
3801
3802 void ClientMap::PrintInfo(std::ostream &out)
3803 {
3804         out<<"ClientMap: ";
3805 }
3806
3807 #endif // !SERVER
3808
3809 /*
3810         MapVoxelManipulator
3811 */
3812
3813 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3814 {
3815         m_map = map;
3816 }
3817
3818 MapVoxelManipulator::~MapVoxelManipulator()
3819 {
3820         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3821                         <<std::endl;*/
3822 }
3823
3824 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3825 {
3826         TimeTaker timer1("emerge", &emerge_time);
3827
3828         // Units of these are MapBlocks
3829         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3830         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3831
3832         VoxelArea block_area_nodes
3833                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3834
3835         addArea(block_area_nodes);
3836
3837         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3838         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3839         for(s32 x=p_min.X; x<=p_max.X; x++)
3840         {
3841                 v3s16 p(x,y,z);
3842                 core::map<v3s16, bool>::Node *n;
3843                 n = m_loaded_blocks.find(p);
3844                 if(n != NULL)
3845                         continue;
3846
3847                 bool block_data_inexistent = false;
3848                 try
3849                 {
3850                         TimeTaker timer1("emerge load", &emerge_load_time);
3851
3852                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3853                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3854                                         <<" wanted area: ";
3855                         a.print(dstream);
3856                         dstream<<std::endl;*/
3857
3858                         MapBlock *block = m_map->getBlockNoCreate(p);
3859                         if(block->isDummy())
3860                                 block_data_inexistent = true;
3861                         else
3862                                 block->copyTo(*this);
3863                 }
3864                 catch(InvalidPositionException &e)
3865                 {
3866                         block_data_inexistent = true;
3867                 }
3868
3869                 if(block_data_inexistent)
3870                 {
3871                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3872                         // Fill with VOXELFLAG_INEXISTENT
3873                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3874                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3875                         {
3876                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3877                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3878                         }
3879                 }
3880
3881                 m_loaded_blocks.insert(p, !block_data_inexistent);
3882         }
3883
3884         //dstream<<"emerge done"<<std::endl;
3885 }
3886
3887 /*
3888         SUGG: Add an option to only update eg. water and air nodes.
3889               This will make it interfere less with important stuff if
3890                   run on background.
3891 */
3892 void MapVoxelManipulator::blitBack
3893                 (core::map<v3s16, MapBlock*> & modified_blocks)
3894 {
3895         if(m_area.getExtent() == v3s16(0,0,0))
3896                 return;
3897
3898         //TimeTaker timer1("blitBack");
3899
3900         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3901                         <<m_loaded_blocks.size()<<std::endl;*/
3902
3903         /*
3904                 Initialize block cache
3905         */
3906         v3s16 blockpos_last;
3907         MapBlock *block = NULL;
3908         bool block_checked_in_modified = false;
3909
3910         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3911         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3912         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3913         {
3914                 v3s16 p(x,y,z);
3915
3916                 u8 f = m_flags[m_area.index(p)];
3917                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
3918                         continue;
3919
3920                 MapNode &n = m_data[m_area.index(p)];
3921
3922                 v3s16 blockpos = getNodeBlockPos(p);
3923
3924                 try
3925                 {
3926                         // Get block
3927                         if(block == NULL || blockpos != blockpos_last){
3928                                 block = m_map->getBlockNoCreate(blockpos);
3929                                 blockpos_last = blockpos;
3930                                 block_checked_in_modified = false;
3931                         }
3932
3933                         // Calculate relative position in block
3934                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
3935
3936                         // Don't continue if nothing has changed here
3937                         if(block->getNode(relpos) == n)
3938                                 continue;
3939
3940                         //m_map->setNode(m_area.MinEdge + p, n);
3941                         block->setNode(relpos, n);
3942
3943                         /*
3944                                 Make sure block is in modified_blocks
3945                         */
3946                         if(block_checked_in_modified == false)
3947                         {
3948                                 modified_blocks[blockpos] = block;
3949                                 block_checked_in_modified = true;
3950                         }
3951                 }
3952                 catch(InvalidPositionException &e)
3953                 {
3954                 }
3955         }
3956 }
3957
3958 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
3959                 MapVoxelManipulator(map),
3960                 m_create_area(false)
3961 {
3962 }
3963
3964 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
3965 {
3966 }
3967
3968 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3969 {
3970         // Just create the area so that it can be pointed to
3971         VoxelManipulator::emerge(a, caller_id);
3972 }
3973
3974 void ManualMapVoxelManipulator::initialEmerge(
3975                 v3s16 blockpos_min, v3s16 blockpos_max)
3976 {
3977         TimeTaker timer1("initialEmerge", &emerge_time);
3978
3979         // Units of these are MapBlocks
3980         v3s16 p_min = blockpos_min;
3981         v3s16 p_max = blockpos_max;
3982
3983         VoxelArea block_area_nodes
3984                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3985
3986         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
3987         if(size_MB >= 1)
3988         {
3989                 dstream<<"initialEmerge: area: ";
3990                 block_area_nodes.print(dstream);
3991                 dstream<<" ("<<size_MB<<"MB)";
3992                 dstream<<std::endl;
3993         }
3994
3995         addArea(block_area_nodes);
3996
3997         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3998         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3999         for(s32 x=p_min.X; x<=p_max.X; x++)
4000         {
4001                 v3s16 p(x,y,z);
4002                 core::map<v3s16, bool>::Node *n;
4003                 n = m_loaded_blocks.find(p);
4004                 if(n != NULL)
4005                         continue;
4006
4007                 bool block_data_inexistent = false;
4008                 try
4009                 {
4010                         TimeTaker timer1("emerge load", &emerge_load_time);
4011
4012                         MapBlock *block = m_map->getBlockNoCreate(p);
4013                         if(block->isDummy())
4014                                 block_data_inexistent = true;
4015                         else
4016                                 block->copyTo(*this);
4017                 }
4018                 catch(InvalidPositionException &e)
4019                 {
4020                         block_data_inexistent = true;
4021                 }
4022
4023                 if(block_data_inexistent)
4024                 {
4025                         /*
4026                                 Mark area inexistent
4027                         */
4028                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4029                         // Fill with VOXELFLAG_INEXISTENT
4030                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4031                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4032                         {
4033                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4034                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4035                         }
4036                 }
4037
4038                 m_loaded_blocks.insert(p, !block_data_inexistent);
4039         }
4040 }
4041
4042 void ManualMapVoxelManipulator::blitBackAll(
4043                 core::map<v3s16, MapBlock*> * modified_blocks)
4044 {
4045         if(m_area.getExtent() == v3s16(0,0,0))
4046                 return;
4047
4048         /*
4049                 Copy data of all blocks
4050         */
4051         for(core::map<v3s16, bool>::Iterator
4052                         i = m_loaded_blocks.getIterator();
4053                         i.atEnd() == false; i++)
4054         {
4055                 bool existed = i.getNode()->getValue();
4056                 if(existed == false)
4057                         continue;
4058                 v3s16 p = i.getNode()->getKey();
4059                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4060                 if(block == NULL)
4061                 {
4062                         dstream<<"WARNING: "<<__FUNCTION_NAME
4063                                         <<": got NULL block "
4064                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4065                                         <<std::endl;
4066                         continue;
4067                 }
4068
4069                 block->copyFrom(*this);
4070
4071                 if(modified_blocks)
4072                         modified_blocks->insert(p, block);
4073         }
4074 }
4075
4076 //END