src/map.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "map.h"
  21 #include "mapsector.h"
  22 #include "mapblock.h"
  23 #include "main.h"
  24 #include "client.h"
  25 #include "filesys.h"
  26 #include "utility.h"
  27 #include "voxel.h"
  28 #include "porting.h"
  29 #include "mapgen.h"
  30 #include "nodemetadata.h"
  31
  32 extern "C" {
  33         #include "sqlite3.h"
  34 }
  35 /*
  36         SQLite format specification:
  37         - Initially only replaces sectors/ and sectors2/
  38 */
  39
  40 /*
  41         Map
  42 */
  43
  44 Map::Map(std::ostream &dout):
  45         m_dout(dout),
  46         m_sector_cache(NULL)
  47 {
  48         /*m_sector_mutex.Init();
  49         assert(m_sector_mutex.IsInitialized());*/
  50 }
  51
  52 Map::~Map()
  53 {
  54         /*
  55                 Free all MapSectors
  56         */
  57         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
  58         for(; i.atEnd() == false; i++)
  59         {
  60                 MapSector *sector = i.getNode()->getValue();
  61                 delete sector;
  62         }
  63 }
  64
  65 void Map::addEventReceiver(MapEventReceiver *event_receiver)
  66 {
  67         m_event_receivers.insert(event_receiver, false);
  68 }
  69
  70 void Map::removeEventReceiver(MapEventReceiver *event_receiver)
  71 {
  72         if(m_event_receivers.find(event_receiver) == NULL)
  73                 return;
  74         m_event_receivers.remove(event_receiver);
  75 }
  76
  77 void Map::dispatchEvent(MapEditEvent *event)
  78 {
  79         for(core::map<MapEventReceiver*, bool>::Iterator
  80                         i = m_event_receivers.getIterator();
  81                         i.atEnd()==false; i++)
  82         {
  83                 MapEventReceiver* event_receiver = i.getNode()->getKey();
  84                 event_receiver->onMapEditEvent(event);
  85         }
  86 }
  87
  88 MapSector * Map::getSectorNoGenerateNoExNoLock(v2s16 p)
  89 {
  90         if(m_sector_cache != NULL && p == m_sector_cache_p){
  91                 MapSector * sector = m_sector_cache;
  92                 return sector;
  93         }
  94
  95         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p);
  96
  97         if(n == NULL)
  98                 return NULL;
  99
 100         MapSector *sector = n->getValue();
 101
 102         // Cache the last result
 103         m_sector_cache_p = p;
 104         m_sector_cache = sector;
 105
 106         return sector;
 107 }
 108
 109 MapSector * Map::getSectorNoGenerateNoEx(v2s16 p)
 110 {
 111         return getSectorNoGenerateNoExNoLock(p);
 112 }
 113
 114 MapSector * Map::getSectorNoGenerate(v2s16 p)
 115 {
 116         MapSector *sector = getSectorNoGenerateNoEx(p);
 117         if(sector == NULL)
 118                 throw InvalidPositionException();
 119
 120         return sector;
 121 }
 122
 123 MapBlock * Map::getBlockNoCreateNoEx(v3s16 p3d)
 124 {
 125         v2s16 p2d(p3d.X, p3d.Z);
 126         MapSector * sector = getSectorNoGenerateNoEx(p2d);
 127         if(sector == NULL)
 128                 return NULL;
 129         MapBlock *block = sector->getBlockNoCreateNoEx(p3d.Y);
 130         return block;
 131 }
 132
 133 MapBlock * Map::getBlockNoCreate(v3s16 p3d)
 134 {
 135         MapBlock *block = getBlockNoCreateNoEx(p3d);
 136         if(block == NULL)
 137                 throw InvalidPositionException();
 138         return block;
 139 }
 140
 141 bool Map::isNodeUnderground(v3s16 p)
 142 {
 143         v3s16 blockpos = getNodeBlockPos(p);
 144         try{
 145                 MapBlock * block = getBlockNoCreate(blockpos);
 146                 return block->getIsUnderground();
 147         }
 148         catch(InvalidPositionException &e)
 149         {
 150                 return false;
 151         }
 152 }
 153
 154 bool Map::isValidPosition(v3s16 p)
 155 {
 156         v3s16 blockpos = getNodeBlockPos(p);
 157         MapBlock *block = getBlockNoCreate(blockpos);
 158         return (block != NULL);
 159 }
 160
 161 // Returns a CONTENT_IGNORE node if not found
 162 MapNode Map::getNodeNoEx(v3s16 p)
 163 {
 164         v3s16 blockpos = getNodeBlockPos(p);
 165         MapBlock *block = getBlockNoCreateNoEx(blockpos);
 166         if(block == NULL)
 167                 return MapNode(CONTENT_IGNORE);
 168         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 169         return block->getNodeNoCheck(relpos);
 170 }
 171
 172 // throws InvalidPositionException if not found
 173 MapNode Map::getNode(v3s16 p)
 174 {
 175         v3s16 blockpos = getNodeBlockPos(p);
 176         MapBlock *block = getBlockNoCreateNoEx(blockpos);
 177         if(block == NULL)
 178                 throw InvalidPositionException();
 179         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 180         return block->getNodeNoCheck(relpos);
 181 }
 182
 183 // throws InvalidPositionException if not found
 184 void Map::setNode(v3s16 p, MapNode & n)
 185 {
 186         v3s16 blockpos = getNodeBlockPos(p);
 187         MapBlock *block = getBlockNoCreate(blockpos);
 188         v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
 189         block->setNodeNoCheck(relpos, n);
 190 }
 191
 192
 193 /*
 194         Goes recursively through the neighbours of the node.
 195
 196         Alters only transparent nodes.
 197
 198         If the lighting of the neighbour is lower than the lighting of
 199         the node was (before changing it to 0 at the step before), the
 200         lighting of the neighbour is set to 0 and then the same stuff
 201         repeats for the neighbour.
 202
 203         The ending nodes of the routine are stored in light_sources.
 204         This is useful when a light is removed. In such case, this
 205         routine can be called for the light node and then again for
 206         light_sources to re-light the area without the removed light.
 207
 208         values of from_nodes are lighting values.
 209 */
 210 void Map::unspreadLight(enum LightBank bank,
 211                 core::map<v3s16, u8> & from_nodes,
 212                 core::map<v3s16, bool> & light_sources,
 213                 core::map<v3s16, MapBlock*>  & modified_blocks)
 214 {
 215         v3s16 dirs[6] = {
 216                 v3s16(0,0,1), // back
 217                 v3s16(0,1,0), // top
 218                 v3s16(1,0,0), // right
 219                 v3s16(0,0,-1), // front
 220                 v3s16(0,-1,0), // bottom
 221                 v3s16(-1,0,0), // left
 222         };
 223
 224         if(from_nodes.size() == 0)
 225                 return;
 226
 227         u32 blockchangecount = 0;
 228
 229         core::map<v3s16, u8> unlighted_nodes;
 230         core::map<v3s16, u8>::Iterator j;
 231         j = from_nodes.getIterator();
 232
 233         /*
 234                 Initialize block cache
 235         */
 236         v3s16 blockpos_last;
 237         MapBlock *block = NULL;
 238         // Cache this a bit, too
 239         bool block_checked_in_modified = false;
 240
 241         for(; j.atEnd() == false; j++)
 242         {
 243                 v3s16 pos = j.getNode()->getKey();
 244                 v3s16 blockpos = getNodeBlockPos(pos);
 245
 246                 // Only fetch a new block if the block position has changed
 247                 try{
 248                         if(block == NULL || blockpos != blockpos_last){
 249                                 block = getBlockNoCreate(blockpos);
 250                                 blockpos_last = blockpos;
 251
 252                                 block_checked_in_modified = false;
 253                                 blockchangecount++;
 254                         }
 255                 }
 256                 catch(InvalidPositionException &e)
 257                 {
 258                         continue;
 259                 }
 260
 261                 if(block->isDummy())
 262                         continue;
 263
 264                 // Calculate relative position in block
 265                 v3s16 relpos = pos - blockpos_last * MAP_BLOCKSIZE;
 266
 267                 // Get node straight from the block
 268                 MapNode n = block->getNode(relpos);
 269
 270                 u8 oldlight = j.getNode()->getValue();
 271
 272                 // Loop through 6 neighbors
 273                 for(u16 i=0; i<6; i++)
 274                 {
 275                         // Get the position of the neighbor node
 276                         v3s16 n2pos = pos + dirs[i];
 277
 278                         // Get the block where the node is located
 279                         v3s16 blockpos = getNodeBlockPos(n2pos);
 280
 281                         try
 282                         {
 283                                 // Only fetch a new block if the block position has changed
 284                                 try{
 285                                         if(block == NULL || blockpos != blockpos_last){
 286                                                 block = getBlockNoCreate(blockpos);
 287                                                 blockpos_last = blockpos;
 288
 289                                                 block_checked_in_modified = false;
 290                                                 blockchangecount++;
 291                                         }
 292                                 }
 293                                 catch(InvalidPositionException &e)
 294                                 {
 295                                         continue;
 296                                 }
 297
 298                                 // Calculate relative position in block
 299                                 v3s16 relpos = n2pos - blockpos * MAP_BLOCKSIZE;
 300                                 // Get node straight from the block
 301                                 MapNode n2 = block->getNode(relpos);
 302
 303                                 bool changed = false;
 304
 305                                 //TODO: Optimize output by optimizing light_sources?
 306
 307                                 /*
 308                                         If the neighbor is dimmer than what was specified
 309                                         as oldlight (the light of the previous node)
 310                                 */
 311                                 if(n2.getLight(bank) < oldlight)
 312                                 {
 313                                         /*
 314                                                 And the neighbor is transparent and it has some light
 315                                         */
 316                                         if(n2.light_propagates() && n2.getLight(bank) != 0)
 317                                         {
 318                                                 /*
 319                                                         Set light to 0 and add to queue
 320                                                 */
 321
 322                                                 u8 current_light = n2.getLight(bank);
 323                                                 n2.setLight(bank, 0);
 324                                                 block->setNode(relpos, n2);
 325
 326                                                 unlighted_nodes.insert(n2pos, current_light);
 327                                                 changed = true;
 328
 329                                                 /*
 330                                                         Remove from light_sources if it is there
 331                                                         NOTE: This doesn't happen nearly at all
 332                                                 */
 333                                                 /*if(light_sources.find(n2pos))
 334                                                 {
 335                                                         std::cout<<"Removed from light_sources"<<std::endl;
 336                                                         light_sources.remove(n2pos);
 337                                                 }*/
 338                                         }
 339
 340                                         /*// DEBUG
 341                                         if(light_sources.find(n2pos) != NULL)
 342                                                 light_sources.remove(n2pos);*/
 343                                 }
 344                                 else{
 345                                         light_sources.insert(n2pos, true);
 346                                 }
 347
 348                                 // Add to modified_blocks
 349                                 if(changed == true && block_checked_in_modified == false)
 350                                 {
 351                                         // If the block is not found in modified_blocks, add.
 352                                         if(modified_blocks.find(blockpos) == NULL)
 353                                         {
 354                                                 modified_blocks.insert(blockpos, block);
 355                                         }
 356                                         block_checked_in_modified = true;
 357                                 }
 358                         }
 359                         catch(InvalidPositionException &e)
 360                         {
 361                                 continue;
 362                         }
 363                 }
 364         }
 365
 366         /*dstream<<"unspreadLight(): Changed block "
 367                         <<blockchangecount<<" times"
 368                         <<" for "<<from_nodes.size()<<" nodes"
 369                         <<std::endl;*/
 370
 371         if(unlighted_nodes.size() > 0)
 372                 unspreadLight(bank, unlighted_nodes, light_sources, modified_blocks);
 373 }
 374
 375 /*
 376         A single-node wrapper of the above
 377 */
 378 void Map::unLightNeighbors(enum LightBank bank,
 379                 v3s16 pos, u8 lightwas,
 380                 core::map<v3s16, bool> & light_sources,
 381                 core::map<v3s16, MapBlock*>  & modified_blocks)
 382 {
 383         core::map<v3s16, u8> from_nodes;
 384         from_nodes.insert(pos, lightwas);
 385
 386         unspreadLight(bank, from_nodes, light_sources, modified_blocks);
 387 }
 388
 389 /*
 390         Lights neighbors of from_nodes, collects all them and then
 391         goes on recursively.
 392 */
 393 void Map::spreadLight(enum LightBank bank,
 394                 core::map<v3s16, bool> & from_nodes,
 395                 core::map<v3s16, MapBlock*> & modified_blocks)
 396 {
 397         const v3s16 dirs[6] = {
 398                 v3s16(0,0,1), // back
 399                 v3s16(0,1,0), // top
 400                 v3s16(1,0,0), // right
 401                 v3s16(0,0,-1), // front
 402                 v3s16(0,-1,0), // bottom
 403                 v3s16(-1,0,0), // left
 404         };
 405
 406         if(from_nodes.size() == 0)
 407                 return;
 408
 409         u32 blockchangecount = 0;
 410
 411         core::map<v3s16, bool> lighted_nodes;
 412         core::map<v3s16, bool>::Iterator j;
 413         j = from_nodes.getIterator();
 414
 415         /*
 416                 Initialize block cache
 417         */
 418         v3s16 blockpos_last;
 419         MapBlock *block = NULL;
 420         // Cache this a bit, too
 421         bool block_checked_in_modified = false;
 422
 423         for(; j.atEnd() == false; j++)
 424         //for(; j != from_nodes.end(); j++)
 425         {
 426                 v3s16 pos = j.getNode()->getKey();
 427                 //v3s16 pos = *j;
 428                 //dstream<<"pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"<<std::endl;
 429                 v3s16 blockpos = getNodeBlockPos(pos);
 430
 431                 // Only fetch a new block if the block position has changed
 432                 try{
 433                         if(block == NULL || blockpos != blockpos_last){
 434                                 block = getBlockNoCreate(blockpos);
 435                                 blockpos_last = blockpos;
 436
 437                                 block_checked_in_modified = false;
 438                                 blockchangecount++;
 439                         }
 440                 }
 441                 catch(InvalidPositionException &e)
 442                 {
 443                         continue;
 444                 }
 445
 446                 if(block->isDummy())
 447                         continue;
 448
 449                 // Calculate relative position in block
 450                 v3s16 relpos = pos - blockpos_last * MAP_BLOCKSIZE;
 451
 452                 // Get node straight from the block
 453                 MapNode n = block->getNode(relpos);
 454
 455                 u8 oldlight = n.getLight(bank);
 456                 u8 newlight = diminish_light(oldlight);
 457
 458                 // Loop through 6 neighbors
 459                 for(u16 i=0; i<6; i++){
 460                         // Get the position of the neighbor node
 461                         v3s16 n2pos = pos + dirs[i];
 462
 463                         // Get the block where the node is located
 464                         v3s16 blockpos = getNodeBlockPos(n2pos);
 465
 466                         try
 467                         {
 468                                 // Only fetch a new block if the block position has changed
 469                                 try{
 470                                         if(block == NULL || blockpos != blockpos_last){
 471                                                 block = getBlockNoCreate(blockpos);
 472                                                 blockpos_last = blockpos;
 473
 474                                                 block_checked_in_modified = false;
 475                                                 blockchangecount++;
 476                                         }
 477                                 }
 478                                 catch(InvalidPositionException &e)
 479                                 {
 480                                         continue;
 481                                 }
 482
 483                                 // Calculate relative position in block
 484                                 v3s16 relpos = n2pos - blockpos * MAP_BLOCKSIZE;
 485                                 // Get node straight from the block
 486                                 MapNode n2 = block->getNode(relpos);
 487
 488                                 bool changed = false;
 489                                 /*
 490                                         If the neighbor is brighter than the current node,
 491                                         add to list (it will light up this node on its turn)
 492                                 */
 493                                 if(n2.getLight(bank) > undiminish_light(oldlight))
 494                                 {
 495                                         lighted_nodes.insert(n2pos, true);
 496                                         //lighted_nodes.push_back(n2pos);
 497                                         changed = true;
 498                                 }
 499                                 /*
 500                                         If the neighbor is dimmer than how much light this node
 501                                         would spread on it, add to list
 502                                 */
 503                                 if(n2.getLight(bank) < newlight)
 504                                 {
 505                                         if(n2.light_propagates())
 506                                         {
 507                                                 n2.setLight(bank, newlight);
 508                                                 block->setNode(relpos, n2);
 509                                                 lighted_nodes.insert(n2pos, true);
 510                                                 //lighted_nodes.push_back(n2pos);
 511                                                 changed = true;
 512                                         }
 513                                 }
 514
 515                                 // Add to modified_blocks
 516                                 if(changed == true && block_checked_in_modified == false)
 517                                 {
 518                                         // If the block is not found in modified_blocks, add.
 519                                         if(modified_blocks.find(blockpos) == NULL)
 520                                         {
 521                                                 modified_blocks.insert(blockpos, block);
 522                                         }
 523                                         block_checked_in_modified = true;
 524                                 }
 525                         }
 526                         catch(InvalidPositionException &e)
 527                         {
 528                                 continue;
 529                         }
 530                 }
 531         }
 532
 533         /*dstream<<"spreadLight(): Changed block "
 534                         <<blockchangecount<<" times"
 535                         <<" for "<<from_nodes.size()<<" nodes"
 536                         <<std::endl;*/
 537
 538         if(lighted_nodes.size() > 0)
 539                 spreadLight(bank, lighted_nodes, modified_blocks);
 540 }
 541
 542 /*
 543         A single-node source variation of the above.
 544 */
 545 void Map::lightNeighbors(enum LightBank bank,
 546                 v3s16 pos,
 547                 core::map<v3s16, MapBlock*> & modified_blocks)
 548 {
 549         core::map<v3s16, bool> from_nodes;
 550         from_nodes.insert(pos, true);
 551         spreadLight(bank, from_nodes, modified_blocks);
 552 }
 553
 554 v3s16 Map::getBrightestNeighbour(enum LightBank bank, v3s16 p)
 555 {
 556         v3s16 dirs[6] = {
 557                 v3s16(0,0,1), // back
 558                 v3s16(0,1,0), // top
 559                 v3s16(1,0,0), // right
 560                 v3s16(0,0,-1), // front
 561                 v3s16(0,-1,0), // bottom
 562                 v3s16(-1,0,0), // left
 563         };
 564
 565         u8 brightest_light = 0;
 566         v3s16 brightest_pos(0,0,0);
 567         bool found_something = false;
 568
 569         // Loop through 6 neighbors
 570         for(u16 i=0; i<6; i++){
 571                 // Get the position of the neighbor node
 572                 v3s16 n2pos = p + dirs[i];
 573                 MapNode n2;
 574                 try{
 575                         n2 = getNode(n2pos);
 576                 }
 577                 catch(InvalidPositionException &e)
 578                 {
 579                         continue;
 580                 }
 581                 if(n2.getLight(bank) > brightest_light || found_something == false){
 582                         brightest_light = n2.getLight(bank);
 583                         brightest_pos = n2pos;
 584                         found_something = true;
 585                 }
 586         }
 587
 588         if(found_something == false)
 589                 throw InvalidPositionException();
 590
 591         return brightest_pos;
 592 }
 593
 594 /*
 595         Propagates sunlight down from a node.
 596         Starting point gets sunlight.
 597
 598         Returns the lowest y value of where the sunlight went.
 599
 600         Mud is turned into grass in where the sunlight stops.
 601 */
 602 s16 Map::propagateSunlight(v3s16 start,
 603                 core::map<v3s16, MapBlock*> & modified_blocks)
 604 {
 605         s16 y = start.Y;
 606         for(; ; y--)
 607         {
 608                 v3s16 pos(start.X, y, start.Z);
 609
 610                 v3s16 blockpos = getNodeBlockPos(pos);
 611                 MapBlock *block;
 612                 try{
 613                         block = getBlockNoCreate(blockpos);
 614                 }
 615                 catch(InvalidPositionException &e)
 616                 {
 617                         break;
 618                 }
 619
 620                 v3s16 relpos = pos - blockpos*MAP_BLOCKSIZE;
 621                 MapNode n = block->getNode(relpos);
 622
 623                 if(n.sunlight_propagates())
 624                 {
 625                         n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 626                         block->setNode(relpos, n);
 627
 628                         modified_blocks.insert(blockpos, block);
 629                 }
 630                 else
 631                 {
 632                         /*// Turn mud into grass
 633                         if(n.d == CONTENT_MUD)
 634                         {
 635                                 n.d = CONTENT_GRASS;
 636                                 block->setNode(relpos, n);
 637                                 modified_blocks.insert(blockpos, block);
 638                         }*/
 639
 640                         // Sunlight goes no further
 641                         break;
 642                 }
 643         }
 644         return y + 1;
 645 }
 646
 647 void Map::updateLighting(enum LightBank bank,
 648                 core::map<v3s16, MapBlock*> & a_blocks,
 649                 core::map<v3s16, MapBlock*> & modified_blocks)
 650 {
 651         /*m_dout<<DTIME<<"Map::updateLighting(): "
 652                         <<a_blocks.size()<<" blocks."<<std::endl;*/
 653
 654         //TimeTaker timer("updateLighting");
 655
 656         // For debugging
 657         //bool debug=true;
 658         //u32 count_was = modified_blocks.size();
 659
 660         core::map<v3s16, MapBlock*> blocks_to_update;
 661
 662         core::map<v3s16, bool> light_sources;
 663
 664         core::map<v3s16, u8> unlight_from;
 665
 666         core::map<v3s16, MapBlock*>::Iterator i;
 667         i = a_blocks.getIterator();
 668         for(; i.atEnd() == false; i++)
 669         {
 670                 MapBlock *block = i.getNode()->getValue();
 671
 672                 for(;;)
 673                 {
 674                         // Don't bother with dummy blocks.
 675                         if(block->isDummy())
 676                                 break;
 677
 678                         v3s16 pos = block->getPos();
 679                         modified_blocks.insert(pos, block);
 680
 681                         blocks_to_update.insert(pos, block);
 682
 683                         /*
 684                                 Clear all light from block
 685                         */
 686                         for(s16 z=0; z<MAP_BLOCKSIZE; z++)
 687                         for(s16 x=0; x<MAP_BLOCKSIZE; x++)
 688                         for(s16 y=0; y<MAP_BLOCKSIZE; y++)
 689                         {
 690
 691                                 try{
 692                                         v3s16 p(x,y,z);
 693                                         MapNode n = block->getNode(v3s16(x,y,z));
 694                                         u8 oldlight = n.getLight(bank);
 695                                         n.setLight(bank, 0);
 696                                         block->setNode(v3s16(x,y,z), n);
 697
 698                                         // Collect borders for unlighting
 699                                         if(x==0 || x == MAP_BLOCKSIZE-1
 700                                         || y==0 || y == MAP_BLOCKSIZE-1
 701                                         || z==0 || z == MAP_BLOCKSIZE-1)
 702                                         {
 703                                                 v3s16 p_map = p + v3s16(
 704                                                                 MAP_BLOCKSIZE*pos.X,
 705                                                                 MAP_BLOCKSIZE*pos.Y,
 706                                                                 MAP_BLOCKSIZE*pos.Z);
 707                                                 unlight_from.insert(p_map, oldlight);
 708                                         }
 709                                 }
 710                                 catch(InvalidPositionException &e)
 711                                 {
 712                                         /*
 713                                                 This would happen when dealing with a
 714                                                 dummy block.
 715                                         */
 716                                         //assert(0);
 717                                         dstream<<"updateLighting(): InvalidPositionException"
 718                                                         <<std::endl;
 719                                 }
 720                         }
 721
 722                         if(bank == LIGHTBANK_DAY)
 723                         {
 724                                 bool bottom_valid = block->propagateSunlight(light_sources);
 725
 726                                 // If bottom is valid, we're done.
 727                                 if(bottom_valid)
 728                                         break;
 729                         }
 730                         else if(bank == LIGHTBANK_NIGHT)
 731                         {
 732                                 // For night lighting, sunlight is not propagated
 733                                 break;
 734                         }
 735                         else
 736                         {
 737                                 // Invalid lighting bank
 738                                 assert(0);
 739                         }
 740
 741                         /*dstream<<"Bottom for sunlight-propagated block ("
 742                                         <<pos.X<<","<<pos.Y<<","<<pos.Z<<") not valid"
 743                                         <<std::endl;*/
 744
 745                         // Bottom sunlight is not valid; get the block and loop to it
 746
 747                         pos.Y--;
 748                         try{
 749                                 block = getBlockNoCreate(pos);
 750                         }
 751                         catch(InvalidPositionException &e)
 752                         {
 753                                 assert(0);
 754                         }
 755
 756                 }
 757         }
 758
 759         /*
 760                 Enable this to disable proper lighting for speeding up map
 761                 generation for testing or whatever
 762         */
 763 #if 0
 764         //if(g_settings.get(""))
 765         {
 766                 core::map<v3s16, MapBlock*>::Iterator i;
 767                 i = blocks_to_update.getIterator();
 768                 for(; i.atEnd() == false; i++)
 769                 {
 770                         MapBlock *block = i.getNode()->getValue();
 771                         v3s16 p = block->getPos();
 772                         block->setLightingExpired(false);
 773                 }
 774                 return;
 775         }
 776 #endif
 777
 778 #if 0
 779         {
 780                 TimeTaker timer("unspreadLight");
 781                 unspreadLight(bank, unlight_from, light_sources, modified_blocks);
 782         }
 783
 784         if(debug)
 785         {
 786                 u32 diff = modified_blocks.size() - count_was;
 787                 count_was = modified_blocks.size();
 788                 dstream<<"unspreadLight modified "<<diff<<std::endl;
 789         }
 790
 791         {
 792                 TimeTaker timer("spreadLight");
 793                 spreadLight(bank, light_sources, modified_blocks);
 794         }
 795
 796         if(debug)
 797         {
 798                 u32 diff = modified_blocks.size() - count_was;
 799                 count_was = modified_blocks.size();
 800                 dstream<<"spreadLight modified "<<diff<<std::endl;
 801         }
 802 #endif
 803
 804         {
 805                 //MapVoxelManipulator vmanip(this);
 806
 807                 // Make a manual voxel manipulator and load all the blocks
 808                 // that touch the requested blocks
 809                 ManualMapVoxelManipulator vmanip(this);
 810                 core::map<v3s16, MapBlock*>::Iterator i;
 811                 i = blocks_to_update.getIterator();
 812                 for(; i.atEnd() == false; i++)
 813                 {
 814                         MapBlock *block = i.getNode()->getValue();
 815                         v3s16 p = block->getPos();
 816
 817                         // Add all surrounding blocks
 818                         vmanip.initialEmerge(p - v3s16(1,1,1), p + v3s16(1,1,1));
 819
 820                         /*
 821                                 Add all surrounding blocks that have up-to-date lighting
 822                                 NOTE: This doesn't quite do the job (not everything
 823                                           appropriate is lighted)
 824                         */
 825                         /*for(s16 z=-1; z<=1; z++)
 826                         for(s16 y=-1; y<=1; y++)
 827                         for(s16 x=-1; x<=1; x++)
 828                         {
 829                                 v3s16 p(x,y,z);
 830                                 MapBlock *block = getBlockNoCreateNoEx(p);
 831                                 if(block == NULL)
 832                                         continue;
 833                                 if(block->isDummy())
 834                                         continue;
 835                                 if(block->getLightingExpired())
 836                                         continue;
 837                                 vmanip.initialEmerge(p, p);
 838                         }*/
 839
 840                         // Lighting of block will be updated completely
 841                         block->setLightingExpired(false);
 842                 }
 843
 844                 {
 845                         //TimeTaker timer("unSpreadLight");
 846                         vmanip.unspreadLight(bank, unlight_from, light_sources);
 847                 }
 848                 {
 849                         //TimeTaker timer("spreadLight");
 850                         vmanip.spreadLight(bank, light_sources);
 851                 }
 852                 {
 853                         //TimeTaker timer("blitBack");
 854                         vmanip.blitBack(modified_blocks);
 855                 }
 856                 /*dstream<<"emerge_time="<<emerge_time<<std::endl;
 857                 emerge_time = 0;*/
 858         }
 859
 860         //m_dout<<"Done ("<<getTimestamp()<<")"<<std::endl;
 861 }
 862
 863 void Map::updateLighting(core::map<v3s16, MapBlock*> & a_blocks,
 864                 core::map<v3s16, MapBlock*> & modified_blocks)
 865 {
 866         updateLighting(LIGHTBANK_DAY, a_blocks, modified_blocks);
 867         updateLighting(LIGHTBANK_NIGHT, a_blocks, modified_blocks);
 868
 869         /*
 870                 Update information about whether day and night light differ
 871         */
 872         for(core::map<v3s16, MapBlock*>::Iterator
 873                         i = modified_blocks.getIterator();
 874                         i.atEnd() == false; i++)
 875         {
 876                 MapBlock *block = i.getNode()->getValue();
 877                 block->updateDayNightDiff();
 878         }
 879 }
 880
 881 /*
 882 */
 883 void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 884                 core::map<v3s16, MapBlock*> &modified_blocks)
 885 {
 886         /*PrintInfo(m_dout);
 887         m_dout<<DTIME<<"Map::addNodeAndUpdate(): p=("
 888                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
 889
 890         /*
 891                 From this node to nodes underneath:
 892                 If lighting is sunlight (1.0), unlight neighbours and
 893                 set lighting to 0.
 894                 Else discontinue.
 895         */
 896
 897         v3s16 toppos = p + v3s16(0,1,0);
 898         v3s16 bottompos = p + v3s16(0,-1,0);
 899
 900         bool node_under_sunlight = true;
 901         core::map<v3s16, bool> light_sources;
 902
 903         /*
 904                 If there is a node at top and it doesn't have sunlight,
 905                 there has not been any sunlight going down.
 906
 907                 Otherwise there probably is.
 908         */
 909         try{
 910                 MapNode topnode = getNode(toppos);
 911
 912                 if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
 913                         node_under_sunlight = false;
 914         }
 915         catch(InvalidPositionException &e)
 916         {
 917         }
 918
 919 #if 0
 920         /*
 921                 If the new node is solid and there is grass below, change it to mud
 922         */
 923         if(content_features(n.d).walkable == true)
 924         {
 925                 try{
 926                         MapNode bottomnode = getNode(bottompos);
 927
 928                         if(bottomnode.d == CONTENT_GRASS
 929                                         || bottomnode.d == CONTENT_GRASS_FOOTSTEPS)
 930                         {
 931                                 bottomnode.d = CONTENT_MUD;
 932                                 setNode(bottompos, bottomnode);
 933                         }
 934                 }
 935                 catch(InvalidPositionException &e)
 936                 {
 937                 }
 938         }
 939 #endif
 940
 941 #if 0
 942         /*
 943                 If the new node is mud and it is under sunlight, change it
 944                 to grass
 945         */
 946         if(n.d == CONTENT_MUD && node_under_sunlight)
 947         {
 948                 n.d = CONTENT_GRASS;
 949         }
 950 #endif
 951
 952         /*
 953                 Remove all light that has come out of this node
 954         */
 955
 956         enum LightBank banks[] =
 957         {
 958                 LIGHTBANK_DAY,
 959                 LIGHTBANK_NIGHT
 960         };
 961         for(s32 i=0; i<2; i++)
 962         {
 963                 enum LightBank bank = banks[i];
 964
 965                 u8 lightwas = getNode(p).getLight(bank);
 966
 967                 // Add the block of the added node to modified_blocks
 968                 v3s16 blockpos = getNodeBlockPos(p);
 969                 MapBlock * block = getBlockNoCreate(blockpos);
 970                 assert(block != NULL);
 971                 modified_blocks.insert(blockpos, block);
 972
 973                 assert(isValidPosition(p));
 974
 975                 // Unlight neighbours of node.
 976                 // This means setting light of all consequent dimmer nodes
 977                 // to 0.
 978                 // This also collects the nodes at the border which will spread
 979                 // light again into this.
 980                 unLightNeighbors(bank, p, lightwas, light_sources, modified_blocks);
 981
 982                 n.setLight(bank, 0);
 983         }
 984
 985         /*
 986                 If node lets sunlight through and is under sunlight, it has
 987                 sunlight too.
 988         */
 989         if(node_under_sunlight && content_features(n.d).sunlight_propagates)
 990         {
 991                 n.setLight(LIGHTBANK_DAY, LIGHT_SUN);
 992         }
 993
 994         /*
 995                 Set the node on the map
 996         */
 997
 998         setNode(p, n);
 999
1000         /*
1001                 Add intial metadata
1002         */
1003
1004         NodeMetadata *meta_proto = content_features(n.d).initial_metadata;
1005         if(meta_proto)
1006         {
1007                 NodeMetadata *meta = meta_proto->clone();
1008                 setNodeMetadata(p, meta);
1009         }
1010
1011         /*
1012                 If node is under sunlight and doesn't let sunlight through,
1013                 take all sunlighted nodes under it and clear light from them
1014                 and from where the light has been spread.
1015                 TODO: This could be optimized by mass-unlighting instead
1016                           of looping
1017         */
1018         if(node_under_sunlight && !content_features(n.d).sunlight_propagates)
1019         {
1020                 s16 y = p.Y - 1;
1021                 for(;; y--){
1022                         //m_dout<<DTIME<<"y="<<y<<std::endl;
1023                         v3s16 n2pos(p.X, y, p.Z);
1024
1025                         MapNode n2;
1026                         try{
1027                                 n2 = getNode(n2pos);
1028                         }
1029                         catch(InvalidPositionException &e)
1030                         {
1031                                 break;
1032                         }
1033
1034                         if(n2.getLight(LIGHTBANK_DAY) == LIGHT_SUN)
1035                         {
1036                                 unLightNeighbors(LIGHTBANK_DAY,
1037                                                 n2pos, n2.getLight(LIGHTBANK_DAY),
1038                                                 light_sources, modified_blocks);
1039                                 n2.setLight(LIGHTBANK_DAY, 0);
1040                                 setNode(n2pos, n2);
1041                         }
1042                         else
1043                                 break;
1044                 }
1045         }
1046
1047         for(s32 i=0; i<2; i++)
1048         {
1049                 enum LightBank bank = banks[i];
1050
1051                 /*
1052                         Spread light from all nodes that might be capable of doing so
1053                 */
1054                 spreadLight(bank, light_sources, modified_blocks);
1055         }
1056
1057         /*
1058                 Update information about whether day and night light differ
1059         */
1060         for(core::map<v3s16, MapBlock*>::Iterator
1061                         i = modified_blocks.getIterator();
1062                         i.atEnd() == false; i++)
1063         {
1064                 MapBlock *block = i.getNode()->getValue();
1065                 block->updateDayNightDiff();
1066         }
1067
1068         /*
1069                 Add neighboring liquid nodes and the node itself if it is
1070                 liquid (=water node was added) to transform queue.
1071         */
1072         v3s16 dirs[7] = {
1073                 v3s16(0,0,0), // self
1074                 v3s16(0,0,1), // back
1075                 v3s16(0,1,0), // top
1076                 v3s16(1,0,0), // right
1077                 v3s16(0,0,-1), // front
1078                 v3s16(0,-1,0), // bottom
1079                 v3s16(-1,0,0), // left
1080         };
1081         for(u16 i=0; i<7; i++)
1082         {
1083                 try
1084                 {
1085
1086                 v3s16 p2 = p + dirs[i];
1087
1088                 MapNode n2 = getNode(p2);
1089                 if(content_liquid(n2.d) || n2.d == CONTENT_AIR)
1090                 {
1091                         m_transforming_liquid.push_back(p2);
1092                 }
1093
1094                 }catch(InvalidPositionException &e)
1095                 {
1096                 }
1097         }
1098 }
1099
1100 /*
1101 */
1102 void Map::removeNodeAndUpdate(v3s16 p,
1103                 core::map<v3s16, MapBlock*> &modified_blocks)
1104 {
1105         /*PrintInfo(m_dout);
1106         m_dout<<DTIME<<"Map::removeNodeAndUpdate(): p=("
1107                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
1108
1109         bool node_under_sunlight = true;
1110
1111         v3s16 toppos = p + v3s16(0,1,0);
1112
1113         // Node will be replaced with this
1114         u8 replace_material = CONTENT_AIR;
1115
1116         /*
1117                 If there is a node at top and it doesn't have sunlight,
1118                 there will be no sunlight going down.
1119         */
1120         try{
1121                 MapNode topnode = getNode(toppos);
1122
1123                 if(topnode.getLight(LIGHTBANK_DAY) != LIGHT_SUN)
1124                         node_under_sunlight = false;
1125         }
1126         catch(InvalidPositionException &e)
1127         {
1128         }
1129
1130         core::map<v3s16, bool> light_sources;
1131
1132         enum LightBank banks[] =
1133         {
1134                 LIGHTBANK_DAY,
1135                 LIGHTBANK_NIGHT
1136         };
1137         for(s32 i=0; i<2; i++)
1138         {
1139                 enum LightBank bank = banks[i];
1140
1141                 /*
1142                         Unlight neighbors (in case the node is a light source)
1143                 */
1144                 unLightNeighbors(bank, p,
1145                                 getNode(p).getLight(bank),
1146                                 light_sources, modified_blocks);
1147         }
1148
1149         /*
1150                 Remove node metadata
1151         */
1152
1153         removeNodeMetadata(p);
1154
1155         /*
1156                 Remove the node.
1157                 This also clears the lighting.
1158         */
1159
1160         MapNode n;
1161         n.d = replace_material;
1162         setNode(p, n);
1163
1164         for(s32 i=0; i<2; i++)
1165         {
1166                 enum LightBank bank = banks[i];
1167
1168                 /*
1169                         Recalculate lighting
1170                 */
1171                 spreadLight(bank, light_sources, modified_blocks);
1172         }
1173
1174         // Add the block of the removed node to modified_blocks
1175         v3s16 blockpos = getNodeBlockPos(p);
1176         MapBlock * block = getBlockNoCreate(blockpos);
1177         assert(block != NULL);
1178         modified_blocks.insert(blockpos, block);
1179
1180         /*
1181                 If the removed node was under sunlight, propagate the
1182                 sunlight down from it and then light all neighbors
1183                 of the propagated blocks.
1184         */
1185         if(node_under_sunlight)
1186         {
1187                 s16 ybottom = propagateSunlight(p, modified_blocks);
1188                 /*m_dout<<DTIME<<"Node was under sunlight. "
1189                                 "Propagating sunlight";
1190                 m_dout<<DTIME<<" -> ybottom="<<ybottom<<std::endl;*/
1191                 s16 y = p.Y;
1192                 for(; y >= ybottom; y--)
1193                 {
1194                         v3s16 p2(p.X, y, p.Z);
1195                         /*m_dout<<DTIME<<"lighting neighbors of node ("
1196                                         <<p2.X<<","<<p2.Y<<","<<p2.Z<<")"
1197                                         <<std::endl;*/
1198                         lightNeighbors(LIGHTBANK_DAY, p2, modified_blocks);
1199                 }
1200         }
1201         else
1202         {
1203                 // Set the lighting of this node to 0
1204                 // TODO: Is this needed? Lighting is cleared up there already.
1205                 try{
1206                         MapNode n = getNode(p);
1207                         n.setLight(LIGHTBANK_DAY, 0);
1208                         setNode(p, n);
1209                 }
1210                 catch(InvalidPositionException &e)
1211                 {
1212                         assert(0);
1213                 }
1214         }
1215
1216         for(s32 i=0; i<2; i++)
1217         {
1218                 enum LightBank bank = banks[i];
1219
1220                 // Get the brightest neighbour node and propagate light from it
1221                 v3s16 n2p = getBrightestNeighbour(bank, p);
1222                 try{
1223                         MapNode n2 = getNode(n2p);
1224                         lightNeighbors(bank, n2p, modified_blocks);
1225                 }
1226                 catch(InvalidPositionException &e)
1227                 {
1228                 }
1229         }
1230
1231         /*
1232                 Update information about whether day and night light differ
1233         */
1234         for(core::map<v3s16, MapBlock*>::Iterator
1235                         i = modified_blocks.getIterator();
1236                         i.atEnd() == false; i++)
1237         {
1238                 MapBlock *block = i.getNode()->getValue();
1239                 block->updateDayNightDiff();
1240         }
1241
1242         /*
1243                 Add neighboring liquid nodes and this node to transform queue.
1244                 (it's vital for the node itself to get updated last.)
1245         */
1246         v3s16 dirs[7] = {
1247                 v3s16(0,0,1), // back
1248                 v3s16(0,1,0), // top
1249                 v3s16(1,0,0), // right
1250                 v3s16(0,0,-1), // front
1251                 v3s16(0,-1,0), // bottom
1252                 v3s16(-1,0,0), // left
1253                 v3s16(0,0,0), // self
1254         };
1255         for(u16 i=0; i<7; i++)
1256         {
1257                 try
1258                 {
1259
1260                 v3s16 p2 = p + dirs[i];
1261
1262                 MapNode n2 = getNode(p2);
1263                 if(content_liquid(n2.d) || n2.d == CONTENT_AIR)
1264                 {
1265                         m_transforming_liquid.push_back(p2);
1266                 }
1267
1268                 }catch(InvalidPositionException &e)
1269                 {
1270                 }
1271         }
1272 }
1273
1274 bool Map::addNodeWithEvent(v3s16 p, MapNode n)
1275 {
1276         MapEditEvent event;
1277         event.type = MEET_ADDNODE;
1278         event.p = p;
1279         event.n = n;
1280
1281         bool succeeded = true;
1282         try{
1283                 core::map<v3s16, MapBlock*> modified_blocks;
1284                 addNodeAndUpdate(p, n, modified_blocks);
1285
1286                 // Copy modified_blocks to event
1287                 for(core::map<v3s16, MapBlock*>::Iterator
1288                                 i = modified_blocks.getIterator();
1289                                 i.atEnd()==false; i++)
1290                 {
1291                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1292                 }
1293         }
1294         catch(InvalidPositionException &e){
1295                 succeeded = false;
1296         }
1297
1298         dispatchEvent(&event);
1299
1300         return succeeded;
1301 }
1302
1303 bool Map::removeNodeWithEvent(v3s16 p)
1304 {
1305         MapEditEvent event;
1306         event.type = MEET_REMOVENODE;
1307         event.p = p;
1308
1309         bool succeeded = true;
1310         try{
1311                 core::map<v3s16, MapBlock*> modified_blocks;
1312                 removeNodeAndUpdate(p, modified_blocks);
1313
1314                 // Copy modified_blocks to event
1315                 for(core::map<v3s16, MapBlock*>::Iterator
1316                                 i = modified_blocks.getIterator();
1317                                 i.atEnd()==false; i++)
1318                 {
1319                         event.modified_blocks.insert(i.getNode()->getKey(), false);
1320                 }
1321         }
1322         catch(InvalidPositionException &e){
1323                 succeeded = false;
1324         }
1325
1326         dispatchEvent(&event);
1327
1328         return succeeded;
1329 }
1330
1331 bool Map::dayNightDiffed(v3s16 blockpos)
1332 {
1333         try{
1334                 v3s16 p = blockpos + v3s16(0,0,0);
1335                 MapBlock *b = getBlockNoCreate(p);
1336                 if(b->dayNightDiffed())
1337                         return true;
1338         }
1339         catch(InvalidPositionException &e){}
1340         // Leading edges
1341         try{
1342                 v3s16 p = blockpos + v3s16(-1,0,0);
1343                 MapBlock *b = getBlockNoCreate(p);
1344                 if(b->dayNightDiffed())
1345                         return true;
1346         }
1347         catch(InvalidPositionException &e){}
1348         try{
1349                 v3s16 p = blockpos + v3s16(0,-1,0);
1350                 MapBlock *b = getBlockNoCreate(p);
1351                 if(b->dayNightDiffed())
1352                         return true;
1353         }
1354         catch(InvalidPositionException &e){}
1355         try{
1356                 v3s16 p = blockpos + v3s16(0,0,-1);
1357                 MapBlock *b = getBlockNoCreate(p);
1358                 if(b->dayNightDiffed())
1359                         return true;
1360         }
1361         catch(InvalidPositionException &e){}
1362         // Trailing edges
1363         try{
1364                 v3s16 p = blockpos + v3s16(1,0,0);
1365                 MapBlock *b = getBlockNoCreate(p);
1366                 if(b->dayNightDiffed())
1367                         return true;
1368         }
1369         catch(InvalidPositionException &e){}
1370         try{
1371                 v3s16 p = blockpos + v3s16(0,1,0);
1372                 MapBlock *b = getBlockNoCreate(p);
1373                 if(b->dayNightDiffed())
1374                         return true;
1375         }
1376         catch(InvalidPositionException &e){}
1377         try{
1378                 v3s16 p = blockpos + v3s16(0,0,1);
1379                 MapBlock *b = getBlockNoCreate(p);
1380                 if(b->dayNightDiffed())
1381                         return true;
1382         }
1383         catch(InvalidPositionException &e){}
1384
1385         return false;
1386 }
1387
1388 /*
1389         Updates usage timers
1390 */
1391 void Map::timerUpdate(float dtime, float unload_timeout,
1392                 core::list<v3s16> *unloaded_blocks)
1393 {
1394         bool save_before_unloading = (mapType() == MAPTYPE_SERVER);
1395
1396         core::list<v2s16> sector_deletion_queue;
1397         u32 deleted_blocks_count = 0;
1398         u32 saved_blocks_count = 0;
1399
1400         core::map<v2s16, MapSector*>::Iterator si;
1401
1402         si = m_sectors.getIterator();
1403         for(; si.atEnd() == false; si++)
1404         {
1405                 MapSector *sector = si.getNode()->getValue();
1406
1407                 bool all_blocks_deleted = true;
1408
1409                 core::list<MapBlock*> blocks;
1410                 sector->getBlocks(blocks);
1411                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1412                                 i != blocks.end(); i++)
1413                 {
1414                         MapBlock *block = (*i);
1415
1416                         block->incrementUsageTimer(dtime);
1417
1418                         if(block->getUsageTimer() > unload_timeout)
1419                         {
1420                                 v3s16 p = block->getPos();
1421
1422                                 // Save if modified
1423                                 if(block->getModified() != MOD_STATE_CLEAN
1424                                                 && save_before_unloading)
1425                                 {
1426                                         saveBlock(block);
1427                                         saved_blocks_count++;
1428                                 }
1429
1430                                 // Delete from memory
1431                                 sector->deleteBlock(block);
1432
1433                                 if(unloaded_blocks)
1434                                         unloaded_blocks->push_back(p);
1435
1436                                 deleted_blocks_count++;
1437                         }
1438                         else
1439                         {
1440                                 all_blocks_deleted = false;
1441                         }
1442                 }
1443
1444                 if(all_blocks_deleted)
1445                 {
1446                         sector_deletion_queue.push_back(si.getNode()->getKey());
1447                 }
1448         }
1449
1450         // Finally delete the empty sectors
1451         deleteSectors(sector_deletion_queue);
1452
1453         if(deleted_blocks_count != 0)
1454         {
1455                 PrintInfo(dstream); // ServerMap/ClientMap:
1456                 dstream<<"Unloaded "<<deleted_blocks_count
1457                                 <<" blocks from memory";
1458                 if(save_before_unloading)
1459                         dstream<<", of which "<<saved_blocks_count<<" were written";
1460                 dstream<<"."<<std::endl;
1461         }
1462 }
1463
1464 void Map::deleteSectors(core::list<v2s16> &list)
1465 {
1466         core::list<v2s16>::Iterator j;
1467         for(j=list.begin(); j!=list.end(); j++)
1468         {
1469                 MapSector *sector = m_sectors[*j];
1470                 // If sector is in sector cache, remove it from there
1471                 if(m_sector_cache == sector)
1472                         m_sector_cache = NULL;
1473                 // Remove from map and delete
1474                 m_sectors.remove(*j);
1475                 delete sector;
1476         }
1477 }
1478
1479 #if 0
1480 void Map::unloadUnusedData(float timeout,
1481                 core::list<v3s16> *deleted_blocks)
1482 {
1483         core::list<v2s16> sector_deletion_queue;
1484         u32 deleted_blocks_count = 0;
1485         u32 saved_blocks_count = 0;
1486
1487         core::map<v2s16, MapSector*>::Iterator si = m_sectors.getIterator();
1488         for(; si.atEnd() == false; si++)
1489         {
1490                 MapSector *sector = si.getNode()->getValue();
1491
1492                 bool all_blocks_deleted = true;
1493
1494                 core::list<MapBlock*> blocks;
1495                 sector->getBlocks(blocks);
1496                 for(core::list<MapBlock*>::Iterator i = blocks.begin();
1497                                 i != blocks.end(); i++)
1498                 {
1499                         MapBlock *block = (*i);
1500
1501                         if(block->getUsageTimer() > timeout)
1502                         {
1503                                 // Save if modified
1504                                 if(block->getModified() != MOD_STATE_CLEAN)
1505                                 {
1506                                         saveBlock(block);
1507                                         saved_blocks_count++;
1508                                 }
1509                                 // Delete from memory
1510                                 sector->deleteBlock(block);
1511                                 deleted_blocks_count++;
1512                         }
1513                         else
1514                         {
1515                                 all_blocks_deleted = false;
1516                         }
1517                 }
1518
1519                 if(all_blocks_deleted)
1520                 {
1521                         sector_deletion_queue.push_back(si.getNode()->getKey());
1522                 }
1523         }
1524
1525         deleteSectors(sector_deletion_queue);
1526
1527         dstream<<"Map: Unloaded "<<deleted_blocks_count<<" blocks from memory"
1528                         <<", of which "<<saved_blocks_count<<" were wr."
1529                         <<std::endl;
1530
1531         //return sector_deletion_queue.getSize();
1532         //return deleted_blocks_count;
1533 }
1534 #endif
1535
1536 void Map::PrintInfo(std::ostream &out)
1537 {
1538         out<<"Map: ";
1539 }
1540
1541 #define WATER_DROP_BOOST 4
1542
1543 enum NeighborType {
1544         NEIGHBOR_UPPER,
1545         NEIGHBOR_SAME_LEVEL,
1546         NEIGHBOR_LOWER
1547 };
1548 struct NodeNeighbor {
1549         MapNode n;
1550         NeighborType t;
1551         v3s16 p;
1552 };
1553
1554 void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
1555 {
1556         DSTACK(__FUNCTION_NAME);
1557         //TimeTaker timer("transformLiquids()");
1558
1559         u32 loopcount = 0;
1560         u32 initial_size = m_transforming_liquid.size();
1561
1562         /*if(initial_size != 0)
1563                 dstream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
1564
1565         while(m_transforming_liquid.size() != 0)
1566         {
1567                 /*
1568                         Get a queued transforming liquid node
1569                 */
1570                 v3s16 p0 = m_transforming_liquid.pop_front();
1571
1572                 MapNode n0 = getNodeNoEx(p0);
1573
1574                 /*
1575                         Collect information about current node
1576                  */
1577                 s8 liquid_level = -1;
1578                 u8 liquid_kind = CONTENT_IGNORE;
1579                 LiquidType liquid_type = content_features(n0.d).liquid_type;
1580                 switch (liquid_type) {
1581                         case LIQUID_SOURCE:
1582                                 liquid_level = 8;
1583                                 liquid_kind = content_features(n0.d).liquid_alternative_flowing;
1584                                 break;
1585                         case LIQUID_FLOWING:
1586                                 liquid_level = (n0.param2 & LIQUID_LEVEL_MASK);
1587                                 liquid_kind = n0.d;
1588                                 break;
1589                         case LIQUID_NONE:
1590                                 // if this is an air node, it *could* be transformed into a liquid. otherwise,
1591                                 // continue with the next node.
1592                                 if (n0.d != CONTENT_AIR)
1593                                         continue;
1594                                 liquid_kind = CONTENT_AIR;
1595                                 break;
1596                 }
1597
1598                 /*
1599                         Collect information about the environment
1600                  */
1601                 v3s16 dirs[6] = {
1602                         v3s16( 0, 1, 0), // top
1603                         v3s16( 0,-1, 0), // bottom
1604                         v3s16( 1, 0, 0), // right
1605                         v3s16(-1, 0, 0), // left
1606                         v3s16( 0, 0, 1), // back
1607                         v3s16( 0, 0,-1), // front
1608                 };
1609                 NodeNeighbor sources[6]; // surrounding sources
1610                 int num_sources = 0;
1611                 NodeNeighbor flows[6]; // surrounding flowing liquid nodes
1612                 int num_flows = 0;
1613                 NodeNeighbor airs[6]; // surrounding air
1614                 int num_airs = 0;
1615                 NodeNeighbor neutrals[6]; // nodes that are solid or another kind of liquid
1616                 int num_neutrals = 0;
1617                 bool flowing_down = false;
1618                 for (u16 i = 0; i < 6; i++) {
1619                         NeighborType nt = NEIGHBOR_SAME_LEVEL;
1620                         switch (i) {
1621                                 case 0:
1622                                         nt = NEIGHBOR_UPPER;
1623                                         break;
1624                                 case 1:
1625                                         nt = NEIGHBOR_LOWER;
1626                                         break;
1627                         }
1628                         v3s16 npos = p0 + dirs[i];
1629                         NodeNeighbor nb = {getNodeNoEx(npos), nt, npos};
1630                         switch (content_features(nb.n.d).liquid_type) {
1631                                 case LIQUID_NONE:
1632                                         if (nb.n.d == CONTENT_AIR) {
1633                                                 airs[num_airs++] = nb;
1634                                                 // if the current node happens to be a flowing node, it will start to flow down here.
1635                                                 if (nb.t == NEIGHBOR_LOWER)
1636                                                         flowing_down = true;
1637                                         } else {
1638                                                 neutrals[num_neutrals++] = nb;
1639                                         }
1640                                         break;
1641                                 case LIQUID_SOURCE:
1642                                         // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
1643                                         if (liquid_kind == CONTENT_AIR)
1644                                                 liquid_kind = content_features(nb.n.d).liquid_alternative_flowing;
1645                                         if (content_features(nb.n.d).liquid_alternative_flowing !=liquid_kind) {
1646                                                 neutrals[num_neutrals++] = nb;
1647                                         } else {
1648                                                 sources[num_sources++] = nb;
1649                                         }
1650                                         break;
1651                                 case LIQUID_FLOWING:
1652                                         // if this node is not (yet) of a liquid type, choose the first liquid type we encounter
1653                                         if (liquid_kind == CONTENT_AIR)
1654                                                 liquid_kind = content_features(nb.n.d).liquid_alternative_flowing;
1655                                         if (content_features(nb.n.d).liquid_alternative_flowing != liquid_kind) {
1656                                                 neutrals[num_neutrals++] = nb;
1657                                         } else {
1658                                                 flows[num_flows++] = nb;
1659                                                 if (nb.t == NEIGHBOR_LOWER)
1660                                                         flowing_down = true;
1661                                         }
1662                                         break;
1663                         }
1664                 }
1665
1666                 /*
1667                         decide on the type (and possibly level) of the current node
1668                  */
1669                 u8 new_node_content;
1670                 s8 new_node_level = -1;
1671                 if (num_sources >= 2 || liquid_type == LIQUID_SOURCE) {
1672                         // liquid_kind will be set to either the flowing alternative of the node (if it's a liquid)
1673                         // or the flowing alternative of the first of the surrounding sources (if it's air), so
1674                         // it's perfectly safe to use liquid_kind here to determine the new node content.
1675                         new_node_content = content_features(liquid_kind).liquid_alternative_source;
1676                 } else if (num_sources == 1 && sources[0].t != NEIGHBOR_LOWER) {
1677                         // liquid_kind is set properly, see above
1678                         new_node_content = liquid_kind;
1679                         new_node_level = 7;
1680                 } else {
1681                         // no surrounding sources, so get the maximum level that can flow into this node
1682                         for (u16 i = 0; i < num_flows; i++) {
1683                                 u8 nb_liquid_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
1684                                 switch (flows[i].t) {
1685                                         case NEIGHBOR_UPPER:
1686                                                 if (nb_liquid_level + WATER_DROP_BOOST > new_node_level) {
1687                                                         new_node_level = 7;
1688                                                         if (nb_liquid_level + WATER_DROP_BOOST < 7)
1689                                                                 new_node_level = nb_liquid_level + WATER_DROP_BOOST;
1690                                                 }
1691                                                 break;
1692                                         case NEIGHBOR_LOWER:
1693                                                 break;
1694                                         case NEIGHBOR_SAME_LEVEL:
1695                                                 if ((flows[i].n.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK &&
1696                                                         nb_liquid_level > 0 && nb_liquid_level - 1 > new_node_level) {
1697                                                         new_node_level = nb_liquid_level - 1;
1698                                                 }
1699                                                 break;
1700                                 }
1701                         }
1702                         // don't flow as far in open terrain - if there isn't at least one adjacent solid block,
1703                         // substract another unit from the resulting water level.
1704                         if (!flowing_down && new_node_level >= 1) {
1705                                 bool at_wall = false;
1706                                 for (u16 i = 0; i < num_neutrals; i++) {
1707                                         if (neutrals[i].t == NEIGHBOR_SAME_LEVEL) {
1708                                                 at_wall = true;
1709                                                 break;
1710                                         }
1711                                 }
1712                                 if (!at_wall)
1713                                         new_node_level -= 1;
1714                         }
1715
1716                         if (new_node_level >= 0)
1717                                 new_node_content = liquid_kind;
1718                         else
1719                                 new_node_content = CONTENT_AIR;
1720                 }
1721
1722                 /*
1723                         check if anything has changed. if not, just continue with the next node.
1724                  */
1725                 if (new_node_content == n0.d && (content_features(n0.d).liquid_type != LIQUID_FLOWING ||
1726                                                                                  ((n0.param2 & LIQUID_LEVEL_MASK) == (u8)new_node_level &&
1727                                                                                  ((n0.param2 & LIQUID_FLOW_DOWN_MASK) == LIQUID_FLOW_DOWN_MASK)
1728                                                                                  == flowing_down)))
1729                         continue;
1730
1731
1732                 /*
1733                         update the current node
1734                  */
1735                 bool flow_down_enabled = (flowing_down && ((n0.param2 & LIQUID_FLOW_DOWN_MASK) != LIQUID_FLOW_DOWN_MASK));
1736                 n0.d = new_node_content;
1737                 if (content_features(n0.d).liquid_type == LIQUID_FLOWING) {
1738                         // set level to last 3 bits, flowing down bit to 4th bit
1739                         n0.param2 = (flowing_down ? LIQUID_FLOW_DOWN_MASK : 0x00) | (new_node_level & LIQUID_LEVEL_MASK);
1740                 } else {
1741                         n0.param2 = 0;
1742                 }
1743                 setNode(p0, n0);
1744                 v3s16 blockpos = getNodeBlockPos(p0);
1745                 MapBlock *block = getBlockNoCreateNoEx(blockpos);
1746                 if(block != NULL)
1747                         modified_blocks.insert(blockpos, block);
1748
1749                 /*
1750                         enqueue neighbors for update if neccessary
1751                  */
1752                 switch (content_features(n0.d).liquid_type) {
1753                         case LIQUID_SOURCE:
1754                                 // make sure source flows into all neighboring nodes
1755                                 for (u16 i = 0; i < num_flows; i++)
1756                                         if (flows[i].t != NEIGHBOR_UPPER)
1757                                                 m_transforming_liquid.push_back(flows[i].p);
1758                                 for (u16 i = 0; i < num_airs; i++)
1759                                         if (airs[i].t != NEIGHBOR_UPPER)
1760                                                 m_transforming_liquid.push_back(airs[i].p);
1761                                 break;
1762                         case LIQUID_NONE:
1763                                 // this flow has turned to air; neighboring flows might need to do the same
1764                                 for (u16 i = 0; i < num_flows; i++)
1765                                         m_transforming_liquid.push_back(flows[i].p);
1766                                 break;
1767                         case LIQUID_FLOWING:
1768                                 for (u16 i = 0; i < num_flows; i++) {
1769                                         u8 flow_level = (flows[i].n.param2 & LIQUID_LEVEL_MASK);
1770                                         // liquid_level is still the ORIGINAL level of this node.
1771                                         if (flows[i].t != NEIGHBOR_UPPER && ((flow_level < liquid_level || flow_level < new_node_level) ||
1772                                                 flow_down_enabled))
1773                                                 m_transforming_liquid.push_back(flows[i].p);
1774                                 }
1775                                 for (u16 i = 0; i < num_airs; i++) {
1776                                         if (airs[i].t != NEIGHBOR_UPPER && (airs[i].t == NEIGHBOR_LOWER || new_node_level > 0))
1777                                                 m_transforming_liquid.push_back(airs[i].p);
1778                                 }
1779                                 break;
1780                 }
1781
1782                 loopcount++;
1783                 //if(loopcount >= 100000)
1784                 if(loopcount >= initial_size * 10) {
1785                         break;
1786                 }
1787         }
1788         //dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
1789 }
1790
1791 NodeMetadata* Map::getNodeMetadata(v3s16 p)
1792 {
1793         v3s16 blockpos = getNodeBlockPos(p);
1794         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1795         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1796         if(block == NULL)
1797         {
1798                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1799                                 <<std::endl;
1800                 return NULL;
1801         }
1802         NodeMetadata *meta = block->m_node_metadata.get(p_rel);
1803         return meta;
1804 }
1805
1806 void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
1807 {
1808         v3s16 blockpos = getNodeBlockPos(p);
1809         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1810         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1811         if(block == NULL)
1812         {
1813                 dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
1814                                 <<std::endl;
1815                 return;
1816         }
1817         block->m_node_metadata.set(p_rel, meta);
1818 }
1819
1820 void Map::removeNodeMetadata(v3s16 p)
1821 {
1822         v3s16 blockpos = getNodeBlockPos(p);
1823         v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
1824         MapBlock *block = getBlockNoCreateNoEx(blockpos);
1825         if(block == NULL)
1826         {
1827                 dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
1828                                 <<std::endl;
1829                 return;
1830         }
1831         block->m_node_metadata.remove(p_rel);
1832 }
1833
1834 void Map::nodeMetadataStep(float dtime,
1835                 core::map<v3s16, MapBlock*> &changed_blocks)
1836 {
1837         /*
1838                 NOTE:
1839                 Currently there is no way to ensure that all the necessary
1840                 blocks are loaded when this is run. (They might get unloaded)
1841                 NOTE: ^- Actually, that might not be so. In a quick test it
1842                 reloaded a block with a furnace when I walked back to it from
1843                 a distance.
1844         */
1845         core::map<v2s16, MapSector*>::Iterator si;
1846         si = m_sectors.getIterator();
1847         for(; si.atEnd() == false; si++)
1848         {
1849                 MapSector *sector = si.getNode()->getValue();
1850                 core::list< MapBlock * > sectorblocks;
1851                 sector->getBlocks(sectorblocks);
1852                 core::list< MapBlock * >::Iterator i;
1853                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
1854                 {
1855                         MapBlock *block = *i;
1856                         bool changed = block->m_node_metadata.step(dtime);
1857                         if(changed)
1858                                 changed_blocks[block->getPos()] = block;
1859                 }
1860         }
1861 }
1862
1863 /*
1864         ServerMap
1865 */
1866
1867 ServerMap::ServerMap(std::string savedir):
1868         Map(dout_server),
1869         m_seed(0),
1870         m_map_metadata_changed(true)
1871 {
1872         dstream<<__FUNCTION_NAME<<std::endl;
1873
1874         //m_chunksize = 8; // Takes a few seconds
1875
1876         m_seed = (((u64)(myrand()%0xffff)<<0)
1877                         + ((u64)(myrand()%0xffff)<<16)
1878                         + ((u64)(myrand()%0xffff)<<32)
1879                         + ((u64)(myrand()%0xffff)<<48));
1880
1881         /*
1882                 Experimental and debug stuff
1883         */
1884
1885         {
1886         }
1887
1888         /*
1889                 Try to load map; if not found, create a new one.
1890         */
1891
1892         m_savedir = savedir;
1893         m_map_saving_enabled = false;
1894
1895         try
1896         {
1897                 // If directory exists, check contents and load if possible
1898                 if(fs::PathExists(m_savedir))
1899                 {
1900                         // If directory is empty, it is safe to save into it.
1901                         if(fs::GetDirListing(m_savedir).size() == 0)
1902                         {
1903                                 dstream<<DTIME<<"Server: Empty save directory is valid."
1904                                                 <<std::endl;
1905                                 m_map_saving_enabled = true;
1906                         }
1907                         else
1908                         {
1909                                 try{
1910                                         // Load map metadata (seed, chunksize)
1911                                         loadMapMeta();
1912                                 }
1913                                 catch(FileNotGoodException &e){
1914                                         dstream<<DTIME<<"WARNING: Could not load map metadata"
1915                                                         //<<" Disabling chunk-based generator."
1916                                                         <<std::endl;
1917                                         //m_chunksize = 0;
1918                                 }
1919
1920                                 /*try{
1921                                         // Load chunk metadata
1922                                         loadChunkMeta();
1923                                 }
1924                                 catch(FileNotGoodException &e){
1925                                         dstream<<DTIME<<"WARNING: Could not load chunk metadata."
1926                                                         <<" Disabling chunk-based generator."
1927                                                         <<std::endl;
1928                                         m_chunksize = 0;
1929                                 }*/
1930
1931                                 /*dstream<<DTIME<<"Server: Successfully loaded chunk "
1932                                                 "metadata and sector (0,0) from "<<savedir<<
1933                                                 ", assuming valid save directory."
1934                                                 <<std::endl;*/
1935
1936                                 dstream<<DTIME<<"INFO: Server: Successfully loaded map "
1937                                                 <<"and chunk metadata from "<<savedir
1938                                                 <<", assuming valid save directory."
1939                                                 <<std::endl;
1940
1941                                 m_map_saving_enabled = true;
1942                                 // Map loaded, not creating new one
1943                                 return;
1944                         }
1945                 }
1946                 // If directory doesn't exist, it is safe to save to it
1947                 else{
1948                         m_map_saving_enabled = true;
1949                 }
1950         }
1951         catch(std::exception &e)
1952         {
1953                 dstream<<DTIME<<"WARNING: Server: Failed to load map from "<<savedir
1954                                 <<", exception: "<<e.what()<<std::endl;
1955                 dstream<<"Please remove the map or fix it."<<std::endl;
1956                 dstream<<"WARNING: Map saving will be disabled."<<std::endl;
1957         }
1958
1959         dstream<<DTIME<<"INFO: Initializing new map."<<std::endl;
1960
1961         // Create zero sector
1962         emergeSector(v2s16(0,0));
1963
1964         // Initially write whole map
1965         save(false);
1966 }
1967
1968 ServerMap::~ServerMap()
1969 {
1970         dstream<<__FUNCTION_NAME<<std::endl;
1971
1972         try
1973         {
1974                 if(m_map_saving_enabled)
1975                 {
1976                         // Save only changed parts
1977                         save(true);
1978                         dstream<<DTIME<<"Server: saved map to "<<m_savedir<<std::endl;
1979                 }
1980                 else
1981                 {
1982                         dstream<<DTIME<<"Server: map not saved"<<std::endl;
1983                 }
1984         }
1985         catch(std::exception &e)
1986         {
1987                 dstream<<DTIME<<"Server: Failed to save map to "<<m_savedir
1988                                 <<", exception: "<<e.what()<<std::endl;
1989         }
1990
1991 #if 0
1992         /*
1993                 Free all MapChunks
1994         */
1995         core::map<v2s16, MapChunk*>::Iterator i = m_chunks.getIterator();
1996         for(; i.atEnd() == false; i++)
1997         {
1998                 MapChunk *chunk = i.getNode()->getValue();
1999                 delete chunk;
2000         }
2001 #endif
2002 }
2003
2004 void ServerMap::initBlockMake(mapgen::BlockMakeData *data, v3s16 blockpos)
2005 {
2006         /*dstream<<"initBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2007                         <<blockpos.Z<<")"<<std::endl;*/
2008
2009         data->no_op = false;
2010         data->seed = m_seed;
2011         data->blockpos = blockpos;
2012
2013         /*
2014                 Create the whole area of this and the neighboring blocks
2015         */
2016         {
2017                 //TimeTaker timer("initBlockMake() create area");
2018
2019                 for(s16 x=-1; x<=1; x++)
2020                 for(s16 z=-1; z<=1; z++)
2021                 {
2022                         v2s16 sectorpos(blockpos.X+x, blockpos.Z+z);
2023                         // Sector metadata is loaded from disk if not already loaded.
2024                         ServerMapSector *sector = createSector(sectorpos);
2025                         assert(sector);
2026
2027                         for(s16 y=-1; y<=1; y++)
2028                         {
2029                                 //MapBlock *block = createBlock(blockpos);
2030                                 // 1) get from memory, 2) load from disk
2031                                 MapBlock *block = emergeBlock(blockpos, false);
2032                                 // 3) create a blank one
2033                                 if(block == NULL)
2034                                         block = createBlock(blockpos);
2035
2036                                 // Lighting will not be valid after make_chunk is called
2037                                 block->setLightingExpired(true);
2038                                 // Lighting will be calculated
2039                                 //block->setLightingExpired(false);
2040
2041                                 /*
2042                                         Block gets sunlight if this is true.
2043
2044                                         This should be set to true when the top side of a block
2045                                         is completely exposed to the sky.
2046                                 */
2047                                 block->setIsUnderground(false);
2048                         }
2049                 }
2050         }
2051
2052         /*
2053                 Now we have a big empty area.
2054
2055                 Make a ManualMapVoxelManipulator that contains this and the
2056                 neighboring blocks
2057         */
2058
2059         v3s16 bigarea_blocks_min = blockpos - v3s16(1,1,1);
2060         v3s16 bigarea_blocks_max = blockpos + v3s16(1,1,1);
2061
2062         data->vmanip = new ManualMapVoxelManipulator(this);
2063         //data->vmanip->setMap(this);
2064
2065         // Add the area
2066         {
2067                 //TimeTaker timer("initBlockMake() initialEmerge");
2068                 data->vmanip->initialEmerge(bigarea_blocks_min, bigarea_blocks_max);
2069         }
2070
2071         // Data is ready now.
2072 }
2073
2074 MapBlock* ServerMap::finishBlockMake(mapgen::BlockMakeData *data,
2075                 core::map<v3s16, MapBlock*> &changed_blocks)
2076 {
2077         v3s16 blockpos = data->blockpos;
2078         /*dstream<<"finishBlockMake(): ("<<blockpos.X<<","<<blockpos.Y<<","
2079                         <<blockpos.Z<<")"<<std::endl;*/
2080
2081         if(data->no_op)
2082         {
2083                 dstream<<"finishBlockMake(): no-op"<<std::endl;
2084                 return NULL;
2085         }
2086
2087         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2088
2089         /*dstream<<"Resulting vmanip:"<<std::endl;
2090         data->vmanip.print(dstream);*/
2091
2092         /*
2093                 Blit generated stuff to map
2094                 NOTE: blitBackAll adds nearly everything to changed_blocks
2095         */
2096         {
2097                 // 70ms @cs=8
2098                 //TimeTaker timer("finishBlockMake() blitBackAll");
2099                 data->vmanip->blitBackAll(&changed_blocks);
2100         }
2101
2102         if(enable_mapgen_debug_info)
2103                 dstream<<"finishBlockMake: changed_blocks.size()="
2104                                 <<changed_blocks.size()<<std::endl;
2105
2106         /*
2107                 Copy transforming liquid information
2108         */
2109         while(data->transforming_liquid.size() > 0)
2110         {
2111                 v3s16 p = data->transforming_liquid.pop_front();
2112                 m_transforming_liquid.push_back(p);
2113         }
2114
2115         /*
2116                 Get central block
2117         */
2118         MapBlock *block = getBlockNoCreateNoEx(data->blockpos);
2119         assert(block);
2120
2121         /*
2122                 Set is_underground flag for lighting with sunlight
2123         */
2124
2125         block->setIsUnderground(mapgen::block_is_underground(data->seed, blockpos));
2126
2127         /*
2128                 Add sunlight to central block.
2129                 This makes in-dark-spawning monsters to not flood the whole thing.
2130                 Do not spread the light, though.
2131         */
2132         /*core::map<v3s16, bool> light_sources;
2133         bool black_air_left = false;
2134         block->propagateSunlight(light_sources, true, &black_air_left);*/
2135
2136         /*
2137                 NOTE: Lighting and object adding shouldn't really be here, but
2138                 lighting is a bit tricky to move properly to makeBlock.
2139                 TODO: Do this the right way anyway, that is, move it to makeBlock.
2140                       - There needs to be some way for makeBlock to report back if
2141                             the lighting update is going further down because of the
2142                                 new block blocking light
2143         */
2144
2145         /*
2146                 Update lighting
2147                 NOTE: This takes ~60ms, TODO: Investigate why
2148         */
2149         {
2150                 TimeTaker t("finishBlockMake lighting update");
2151
2152                 core::map<v3s16, MapBlock*> lighting_update_blocks;
2153 #if 1
2154                 // Center block
2155                 lighting_update_blocks.insert(block->getPos(), block);
2156 #endif
2157 #if 0
2158                 // All modified blocks
2159                 // NOTE: Should this be done? If this is not done, then the lighting
2160                 // of the others will be updated in a different place, one by one, i
2161                 // think... or they might not? Well, at least they are left marked as
2162                 // "lighting expired"; it seems that is not handled at all anywhere,
2163                 // so enabling this will slow it down A LOT because otherwise it
2164                 // would not do this at all. This causes the black trees.
2165                 for(core::map<v3s16, MapBlock*>::Iterator
2166                                 i = changed_blocks.getIterator();
2167                                 i.atEnd() == false; i++)
2168                 {
2169                         lighting_update_blocks.insert(i.getNode()->getKey(),
2170                                         i.getNode()->getValue());
2171                 }
2172 #endif
2173                 updateLighting(lighting_update_blocks, changed_blocks);
2174
2175                 if(enable_mapgen_debug_info == false)
2176                         t.stop(true); // Hide output
2177         }
2178
2179         /*
2180                 Add random objects to block
2181         */
2182         mapgen::add_random_objects(block);
2183
2184         /*
2185                 Go through changed blocks
2186         */
2187         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
2188                         i.atEnd() == false; i++)
2189         {
2190                 MapBlock *block = i.getNode()->getValue();
2191                 assert(block);
2192                 /*
2193                         Update day/night difference cache of the MapBlocks
2194                 */
2195                 block->updateDayNightDiff();
2196                 /*
2197                         Set block as modified
2198                 */
2199                 block->raiseModified(MOD_STATE_WRITE_NEEDED);
2200         }
2201
2202         /*
2203                 Set central block as generated
2204         */
2205         block->setGenerated(true);
2206
2207         /*
2208                 Save changed parts of map
2209                 NOTE: Will be saved later.
2210         */
2211         //save(true);
2212
2213         /*dstream<<"finishBlockMake() done for ("<<blockpos.X<<","<<blockpos.Y<<","
2214                         <<blockpos.Z<<")"<<std::endl;*/
2215
2216         return block;
2217 }
2218
2219 ServerMapSector * ServerMap::createSector(v2s16 p2d)
2220 {
2221         DSTACKF("%s: p2d=(%d,%d)",
2222                         __FUNCTION_NAME,
2223                         p2d.X, p2d.Y);
2224
2225         /*
2226                 Check if it exists already in memory
2227         */
2228         ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2229         if(sector != NULL)
2230                 return sector;
2231
2232         /*
2233                 Try to load it from disk (with blocks)
2234         */
2235         //if(loadSectorFull(p2d) == true)
2236
2237         /*
2238                 Try to load metadata from disk
2239         */
2240         if(loadSectorMeta(p2d) == true)
2241         {
2242                 ServerMapSector *sector = (ServerMapSector*)getSectorNoGenerateNoEx(p2d);
2243                 if(sector == NULL)
2244                 {
2245                         dstream<<"ServerMap::createSector(): loadSectorFull didn't make a sector"<<std::endl;
2246                         throw InvalidPositionException("");
2247                 }
2248                 return sector;
2249         }
2250
2251         /*
2252                 Do not create over-limit
2253         */
2254         if(p2d.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2255         || p2d.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2256         || p2d.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2257         || p2d.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2258                 throw InvalidPositionException("createSector(): pos. over limit");
2259
2260         /*
2261                 Generate blank sector
2262         */
2263
2264         sector = new ServerMapSector(this, p2d);
2265
2266         // Sector position on map in nodes
2267         v2s16 nodepos2d = p2d * MAP_BLOCKSIZE;
2268
2269         /*
2270                 Insert to container
2271         */
2272         m_sectors.insert(p2d, sector);
2273
2274         return sector;
2275 }
2276
2277 /*
2278         This is a quick-hand function for calling makeBlock().
2279 */
2280 MapBlock * ServerMap::generateBlock(
2281                 v3s16 p,
2282                 core::map<v3s16, MapBlock*> &modified_blocks
2283 )
2284 {
2285         DSTACKF("%s: p=(%d,%d,%d)", __FUNCTION_NAME, p.X, p.Y, p.Z);
2286
2287         /*dstream<<"generateBlock(): "
2288                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2289                         <<std::endl;*/
2290
2291         bool enable_mapgen_debug_info = g_settings.getBool("enable_mapgen_debug_info");
2292
2293         TimeTaker timer("generateBlock");
2294
2295         //MapBlock *block = original_dummy;
2296
2297         v2s16 p2d(p.X, p.Z);
2298         v2s16 p2d_nodes = p2d * MAP_BLOCKSIZE;
2299
2300         /*
2301                 Do not generate over-limit
2302         */
2303         if(blockpos_over_limit(p))
2304         {
2305                 dstream<<__FUNCTION_NAME<<": Block position over limit"<<std::endl;
2306                 throw InvalidPositionException("generateBlock(): pos. over limit");
2307         }
2308
2309         /*
2310                 Create block make data
2311         */
2312         mapgen::BlockMakeData data;
2313         initBlockMake(&data, p);
2314
2315         /*
2316                 Generate block
2317         */
2318         {
2319                 TimeTaker t("mapgen::make_block()");
2320                 mapgen::make_block(&data);
2321
2322                 if(enable_mapgen_debug_info == false)
2323                         t.stop(true); // Hide output
2324         }
2325
2326         /*
2327                 Blit data back on map, update lighting, add mobs and whatever this does
2328         */
2329         finishBlockMake(&data, modified_blocks);
2330
2331         /*
2332                 Get central block
2333         */
2334         MapBlock *block = getBlockNoCreateNoEx(p);
2335         assert(block);
2336
2337 #if 0
2338         /*
2339                 Check result
2340         */
2341         bool erroneus_content = false;
2342         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2343         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2344         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2345         {
2346                 v3s16 p(x0,y0,z0);
2347                 MapNode n = block->getNode(p);
2348                 if(n.d == CONTENT_IGNORE)
2349                 {
2350                         dstream<<"CONTENT_IGNORE at "
2351                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
2352                                         <<std::endl;
2353                         erroneus_content = true;
2354                         assert(0);
2355                 }
2356         }
2357         if(erroneus_content)
2358         {
2359                 assert(0);
2360         }
2361 #endif
2362
2363 #if 0
2364         /*
2365                 Generate a completely empty block
2366         */
2367         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
2368         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
2369         {
2370                 for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
2371                 {
2372                         MapNode n;
2373                         if(y0%2==0)
2374                                 n.d = CONTENT_AIR;
2375                         else
2376                                 n.d = CONTENT_STONE;
2377                         block->setNode(v3s16(x0,y0,z0), n);
2378                 }
2379         }
2380 #endif
2381
2382         if(enable_mapgen_debug_info == false)
2383                 timer.stop(true); // Hide output
2384
2385         return block;
2386 }
2387
2388 MapBlock * ServerMap::createBlock(v3s16 p)
2389 {
2390         DSTACKF("%s: p=(%d,%d,%d)",
2391                         __FUNCTION_NAME, p.X, p.Y, p.Z);
2392
2393         /*
2394                 Do not create over-limit
2395         */
2396         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2397         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2398         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2399         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2400         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2401         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2402                 throw InvalidPositionException("createBlock(): pos. over limit");
2403
2404         v2s16 p2d(p.X, p.Z);
2405         s16 block_y = p.Y;
2406         /*
2407                 This will create or load a sector if not found in memory.
2408                 If block exists on disk, it will be loaded.
2409
2410                 NOTE: On old save formats, this will be slow, as it generates
2411                       lighting on blocks for them.
2412         */
2413         ServerMapSector *sector;
2414         try{
2415                 sector = (ServerMapSector*)createSector(p2d);
2416                 assert(sector->getId() == MAPSECTOR_SERVER);
2417         }
2418         catch(InvalidPositionException &e)
2419         {
2420                 dstream<<"createBlock: createSector() failed"<<std::endl;
2421                 throw e;
2422         }
2423         /*
2424                 NOTE: This should not be done, or at least the exception
2425                 should not be passed on as std::exception, because it
2426                 won't be catched at all.
2427         */
2428         /*catch(std::exception &e)
2429         {
2430                 dstream<<"createBlock: createSector() failed: "
2431                                 <<e.what()<<std::endl;
2432                 throw e;
2433         }*/
2434
2435         /*
2436                 Try to get a block from the sector
2437         */
2438
2439         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2440         if(block)
2441         {
2442                 if(block->isDummy())
2443                         block->unDummify();
2444                 return block;
2445         }
2446         // Create blank
2447         block = sector->createBlankBlock(block_y);
2448         return block;
2449 }
2450
2451 MapBlock * ServerMap::emergeBlock(v3s16 p, bool allow_generate)
2452 {
2453         DSTACKF("%s: p=(%d,%d,%d), allow_generate=%d",
2454                         __FUNCTION_NAME,
2455                         p.X, p.Y, p.Z, allow_generate);
2456
2457         {
2458                 MapBlock *block = getBlockNoCreateNoEx(p);
2459                 if(block)
2460                         return block;
2461         }
2462
2463         {
2464                 MapBlock *block = loadBlock(p);
2465                 if(block)
2466                         return block;
2467         }
2468
2469         if(allow_generate)
2470         {
2471                 core::map<v3s16, MapBlock*> modified_blocks;
2472                 MapBlock *block = generateBlock(p, modified_blocks);
2473                 if(block)
2474                 {
2475                         MapEditEvent event;
2476                         event.type = MEET_OTHER;
2477                         event.p = p;
2478
2479                         // Copy modified_blocks to event
2480                         for(core::map<v3s16, MapBlock*>::Iterator
2481                                         i = modified_blocks.getIterator();
2482                                         i.atEnd()==false; i++)
2483                         {
2484                                 event.modified_blocks.insert(i.getNode()->getKey(), false);
2485                         }
2486
2487                         // Queue event
2488                         dispatchEvent(&event);
2489
2490                         return block;
2491                 }
2492         }
2493
2494         return NULL;
2495 }
2496
2497 #if 0
2498         /*
2499                 Do not generate over-limit
2500         */
2501         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2502         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2503         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2504         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2505         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
2506         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
2507                 throw InvalidPositionException("emergeBlock(): pos. over limit");
2508
2509         v2s16 p2d(p.X, p.Z);
2510         s16 block_y = p.Y;
2511         /*
2512                 This will create or load a sector if not found in memory.
2513                 If block exists on disk, it will be loaded.
2514         */
2515         ServerMapSector *sector;
2516         try{
2517                 sector = createSector(p2d);
2518                 //sector = emergeSector(p2d, changed_blocks);
2519         }
2520         catch(InvalidPositionException &e)
2521         {
2522                 dstream<<"emergeBlock: createSector() failed: "
2523                                 <<e.what()<<std::endl;
2524                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2525                                 <<std::endl
2526                                 <<"You could try to delete it."<<std::endl;
2527                 throw e;
2528         }
2529         catch(VersionMismatchException &e)
2530         {
2531                 dstream<<"emergeBlock: createSector() failed: "
2532                                 <<e.what()<<std::endl;
2533                 dstream<<"Path to failed sector: "<<getSectorDir(p2d)
2534                                 <<std::endl
2535                                 <<"You could try to delete it."<<std::endl;
2536                 throw e;
2537         }
2538
2539         /*
2540                 Try to get a block from the sector
2541         */
2542
2543         bool does_not_exist = false;
2544         bool lighting_expired = false;
2545         MapBlock *block = sector->getBlockNoCreateNoEx(block_y);
2546
2547         // If not found, try loading from disk
2548         if(block == NULL)
2549         {
2550                 block = loadBlock(p);
2551         }
2552
2553         // Handle result
2554         if(block == NULL)
2555         {
2556                 does_not_exist = true;
2557         }
2558         else if(block->isDummy() == true)
2559         {
2560                 does_not_exist = true;
2561         }
2562         else if(block->getLightingExpired())
2563         {
2564                 lighting_expired = true;
2565         }
2566         else
2567         {
2568                 // Valid block
2569                 //dstream<<"emergeBlock(): Returning already valid block"<<std::endl;
2570                 return block;
2571         }
2572
2573         /*
2574                 If block was not found on disk and not going to generate a
2575                 new one, make sure there is a dummy block in place.
2576         */
2577         if(only_from_disk && (does_not_exist || lighting_expired))
2578         {
2579                 //dstream<<"emergeBlock(): Was not on disk but not generating"<<std::endl;
2580
2581                 if(block == NULL)
2582                 {
2583                         // Create dummy block
2584                         block = new MapBlock(this, p, true);
2585
2586                         // Add block to sector
2587                         sector->insertBlock(block);
2588                 }
2589                 // Done.
2590                 return block;
2591         }
2592
2593         //dstream<<"Not found on disk, generating."<<std::endl;
2594         // 0ms
2595         //TimeTaker("emergeBlock() generate");
2596
2597         //dstream<<"emergeBlock(): Didn't find valid block -> making one"<<std::endl;
2598
2599         /*
2600                 If the block doesn't exist, generate the block.
2601         */
2602         if(does_not_exist)
2603         {
2604                 block = generateBlock(p, block, sector, changed_blocks,
2605                                 lighting_invalidated_blocks);
2606         }
2607
2608         if(lighting_expired)
2609         {
2610                 lighting_invalidated_blocks.insert(p, block);
2611         }
2612
2613 #if 0
2614         /*
2615                 Initially update sunlight
2616         */
2617         {
2618                 core::map<v3s16, bool> light_sources;
2619                 bool black_air_left = false;
2620                 bool bottom_invalid =
2621                                 block->propagateSunlight(light_sources, true,
2622                                 &black_air_left);
2623
2624                 // If sunlight didn't reach everywhere and part of block is
2625                 // above ground, lighting has to be properly updated
2626                 //if(black_air_left && some_part_underground)
2627                 if(black_air_left)
2628                 {
2629                         lighting_invalidated_blocks[block->getPos()] = block;
2630                 }
2631
2632                 if(bottom_invalid)
2633                 {
2634                         lighting_invalidated_blocks[block->getPos()] = block;
2635                 }
2636         }
2637 #endif
2638
2639         return block;
2640 }
2641 #endif
2642
2643 s16 ServerMap::findGroundLevel(v2s16 p2d)
2644 {
2645 #if 0
2646         /*
2647                 Uh, just do something random...
2648         */
2649         // Find existing map from top to down
2650         s16 max=63;
2651         s16 min=-64;
2652         v3s16 p(p2d.X, max, p2d.Y);
2653         for(; p.Y>min; p.Y--)
2654         {
2655                 MapNode n = getNodeNoEx(p);
2656                 if(n.d != CONTENT_IGNORE)
2657                         break;
2658         }
2659         if(p.Y == min)
2660                 goto plan_b;
2661         // If this node is not air, go to plan b
2662         if(getNodeNoEx(p).d != CONTENT_AIR)
2663                 goto plan_b;
2664         // Search existing walkable and return it
2665         for(; p.Y>min; p.Y--)
2666         {
2667                 MapNode n = getNodeNoEx(p);
2668                 if(content_walkable(n.d) && n.d != CONTENT_IGNORE)
2669                         return p.Y;
2670         }
2671
2672         // Move to plan b
2673 plan_b:
2674 #endif
2675
2676         /*
2677                 Determine from map generator noise functions
2678         */
2679
2680         s16 level = mapgen::find_ground_level_from_noise(m_seed, p2d, 1);
2681         return level;
2682
2683         //double level = base_rock_level_2d(m_seed, p2d) + AVERAGE_MUD_AMOUNT;
2684         //return (s16)level;
2685 }
2686
2687 void ServerMap::createDirs(std::string path)
2688 {
2689         if(fs::CreateAllDirs(path) == false)
2690         {
2691                 m_dout<<DTIME<<"ServerMap: Failed to create directory "
2692                                 <<"\""<<path<<"\""<<std::endl;
2693                 throw BaseException("ServerMap failed to create directory");
2694         }
2695 }
2696
2697 std::string ServerMap::getSectorDir(v2s16 pos, int layout)
2698 {
2699         char cc[9];
2700         switch(layout)
2701         {
2702                 case 1:
2703                         snprintf(cc, 9, "%.4x%.4x",
2704                                 (unsigned int)pos.X&0xffff,
2705                                 (unsigned int)pos.Y&0xffff);
2706
2707                         return m_savedir + "/sectors/" + cc;
2708                 case 2:
2709                         snprintf(cc, 9, "%.3x/%.3x",
2710                                 (unsigned int)pos.X&0xfff,
2711                                 (unsigned int)pos.Y&0xfff);
2712
2713                         return m_savedir + "/sectors2/" + cc;
2714                 default:
2715                         assert(false);
2716         }
2717 }
2718
2719 v2s16 ServerMap::getSectorPos(std::string dirname)
2720 {
2721         unsigned int x, y;
2722         int r;
2723         size_t spos = dirname.rfind('/') + 1;
2724         assert(spos != std::string::npos);
2725         if(dirname.size() - spos == 8)
2726         {
2727                 // Old layout
2728                 r = sscanf(dirname.substr(spos).c_str(), "%4x%4x", &x, &y);
2729         }
2730         else if(dirname.size() - spos == 3)
2731         {
2732                 // New layout
2733                 r = sscanf(dirname.substr(spos-4).c_str(), "%3x/%3x", &x, &y);
2734                 // Sign-extend the 12 bit values up to 16 bits...
2735                 if(x&0x800) x|=0xF000;
2736                 if(y&0x800) y|=0xF000;
2737         }
2738         else
2739         {
2740                 assert(false);
2741         }
2742         assert(r == 2);
2743         v2s16 pos((s16)x, (s16)y);
2744         return pos;
2745 }
2746
2747 v3s16 ServerMap::getBlockPos(std::string sectordir, std::string blockfile)
2748 {
2749         v2s16 p2d = getSectorPos(sectordir);
2750
2751         if(blockfile.size() != 4){
2752                 throw InvalidFilenameException("Invalid block filename");
2753         }
2754         unsigned int y;
2755         int r = sscanf(blockfile.c_str(), "%4x", &y);
2756         if(r != 1)
2757                 throw InvalidFilenameException("Invalid block filename");
2758         return v3s16(p2d.X, y, p2d.Y);
2759 }
2760
2761 std::string ServerMap::getBlockFilename(v3s16 p)
2762 {
2763         char cc[5];
2764         snprintf(cc, 5, "%.4x", (unsigned int)p.Y&0xffff);
2765         return cc;
2766 }
2767
2768 void ServerMap::save(bool only_changed)
2769 {
2770         DSTACK(__FUNCTION_NAME);
2771         if(m_map_saving_enabled == false)
2772         {
2773                 dstream<<DTIME<<"WARNING: Not saving map, saving disabled."<<std::endl;
2774                 return;
2775         }
2776
2777         if(only_changed == false)
2778                 dstream<<DTIME<<"ServerMap: Saving whole map, this can take time."
2779                                 <<std::endl;
2780
2781         if(only_changed == false || m_map_metadata_changed)
2782         {
2783                 saveMapMeta();
2784         }
2785
2786         u32 sector_meta_count = 0;
2787         u32 block_count = 0;
2788         u32 block_count_all = 0; // Number of blocks in memory
2789
2790         core::map<v2s16, MapSector*>::Iterator i = m_sectors.getIterator();
2791         for(; i.atEnd() == false; i++)
2792         {
2793                 ServerMapSector *sector = (ServerMapSector*)i.getNode()->getValue();
2794                 assert(sector->getId() == MAPSECTOR_SERVER);
2795
2796                 if(sector->differs_from_disk || only_changed == false)
2797                 {
2798                         saveSectorMeta(sector);
2799                         sector_meta_count++;
2800                 }
2801                 core::list<MapBlock*> blocks;
2802                 sector->getBlocks(blocks);
2803                 core::list<MapBlock*>::Iterator j;
2804                 for(j=blocks.begin(); j!=blocks.end(); j++)
2805                 {
2806                         MapBlock *block = *j;
2807
2808                         block_count_all++;
2809
2810                         if(block->getModified() >= MOD_STATE_WRITE_NEEDED
2811                                         || only_changed == false)
2812                         {
2813                                 saveBlock(block);
2814                                 block_count++;
2815
2816                                 /*dstream<<"ServerMap: Written block ("
2817                                                 <<block->getPos().X<<","
2818                                                 <<block->getPos().Y<<","
2819                                                 <<block->getPos().Z<<")"
2820                                                 <<std::endl;*/
2821                         }
2822                 }
2823         }
2824
2825         /*
2826                 Only print if something happened or saved whole map
2827         */
2828         if(only_changed == false || sector_meta_count != 0
2829                         || block_count != 0)
2830         {
2831                 dstream<<DTIME<<"ServerMap: Written: "
2832                                 <<sector_meta_count<<" sector metadata files, "
2833                                 <<block_count<<" block files"
2834                                 <<", "<<block_count_all<<" blocks in memory."
2835                                 <<std::endl;
2836         }
2837 }
2838
2839 void ServerMap::saveMapMeta()
2840 {
2841         DSTACK(__FUNCTION_NAME);
2842
2843         dstream<<"INFO: ServerMap::saveMapMeta(): "
2844                         <<"seed="<<m_seed
2845                         <<std::endl;
2846
2847         createDirs(m_savedir);
2848
2849         std::string fullpath = m_savedir + "/map_meta.txt";
2850         std::ofstream os(fullpath.c_str(), std::ios_base::binary);
2851         if(os.good() == false)
2852         {
2853                 dstream<<"ERROR: ServerMap::saveMapMeta(): "
2854                                 <<"could not open"<<fullpath<<std::endl;
2855                 throw FileNotGoodException("Cannot open chunk metadata");
2856         }
2857
2858         Settings params;
2859         params.setU64("seed", m_seed);
2860
2861         params.writeLines(os);
2862
2863         os<<"[end_of_params]\n";
2864
2865         m_map_metadata_changed = false;
2866 }
2867
2868 void ServerMap::loadMapMeta()
2869 {
2870         DSTACK(__FUNCTION_NAME);
2871
2872         dstream<<"INFO: ServerMap::loadMapMeta(): Loading map metadata"
2873                         <<std::endl;
2874
2875         std::string fullpath = m_savedir + "/map_meta.txt";
2876         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2877         if(is.good() == false)
2878         {
2879                 dstream<<"ERROR: ServerMap::loadMapMeta(): "
2880                                 <<"could not open"<<fullpath<<std::endl;
2881                 throw FileNotGoodException("Cannot open map metadata");
2882         }
2883
2884         Settings params;
2885
2886         for(;;)
2887         {
2888                 if(is.eof())
2889                         throw SerializationError
2890                                         ("ServerMap::loadMapMeta(): [end_of_params] not found");
2891                 std::string line;
2892                 std::getline(is, line);
2893                 std::string trimmedline = trim(line);
2894                 if(trimmedline == "[end_of_params]")
2895                         break;
2896                 params.parseConfigLine(line);
2897         }
2898
2899         m_seed = params.getU64("seed");
2900
2901         dstream<<"INFO: ServerMap::loadMapMeta(): "
2902                         <<"seed="<<m_seed
2903                         <<std::endl;
2904 }
2905
2906 void ServerMap::saveSectorMeta(ServerMapSector *sector)
2907 {
2908         DSTACK(__FUNCTION_NAME);
2909         // Format used for writing
2910         u8 version = SER_FMT_VER_HIGHEST;
2911         // Get destination
2912         v2s16 pos = sector->getPos();
2913         std::string dir = getSectorDir(pos);
2914         createDirs(dir);
2915
2916         std::string fullpath = dir + "/meta";
2917         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
2918         if(o.good() == false)
2919                 throw FileNotGoodException("Cannot open sector metafile");
2920
2921         sector->serialize(o, version);
2922
2923         sector->differs_from_disk = false;
2924 }
2925
2926 MapSector* ServerMap::loadSectorMeta(std::string sectordir, bool save_after_load)
2927 {
2928         DSTACK(__FUNCTION_NAME);
2929         // Get destination
2930         v2s16 p2d = getSectorPos(sectordir);
2931
2932         ServerMapSector *sector = NULL;
2933
2934         std::string fullpath = sectordir + "/meta";
2935         std::ifstream is(fullpath.c_str(), std::ios_base::binary);
2936         if(is.good() == false)
2937         {
2938                 // If the directory exists anyway, it probably is in some old
2939                 // format. Just go ahead and create the sector.
2940                 if(fs::PathExists(sectordir))
2941                 {
2942                         /*dstream<<"ServerMap::loadSectorMeta(): Sector metafile "
2943                                         <<fullpath<<" doesn't exist but directory does."
2944                                         <<" Continuing with a sector with no metadata."
2945                                         <<std::endl;*/
2946                         sector = new ServerMapSector(this, p2d);
2947                         m_sectors.insert(p2d, sector);
2948                 }
2949                 else
2950                 {
2951                         throw FileNotGoodException("Cannot open sector metafile");
2952                 }
2953         }
2954         else
2955         {
2956                 sector = ServerMapSector::deSerialize
2957                                 (is, this, p2d, m_sectors);
2958                 if(save_after_load)
2959                         saveSectorMeta(sector);
2960         }
2961
2962         sector->differs_from_disk = false;
2963
2964         return sector;
2965 }
2966
2967 bool ServerMap::loadSectorMeta(v2s16 p2d)
2968 {
2969         DSTACK(__FUNCTION_NAME);
2970
2971         MapSector *sector = NULL;
2972
2973         // The directory layout we're going to load from.
2974         //  1 - original sectors/xxxxzzzz/
2975         //  2 - new sectors2/xxx/zzz/
2976         //  If we load from anything but the latest structure, we will
2977         //  immediately save to the new one, and remove the old.
2978         int loadlayout = 1;
2979         std::string sectordir1 = getSectorDir(p2d, 1);
2980         std::string sectordir;
2981         if(fs::PathExists(sectordir1))
2982         {
2983                 sectordir = sectordir1;
2984         }
2985         else
2986         {
2987                 loadlayout = 2;
2988                 sectordir = getSectorDir(p2d, 2);
2989         }
2990
2991         try{
2992                 sector = loadSectorMeta(sectordir, loadlayout != 2);
2993         }
2994         catch(InvalidFilenameException &e)
2995         {
2996                 return false;
2997         }
2998         catch(FileNotGoodException &e)
2999         {
3000                 return false;
3001         }
3002         catch(std::exception &e)
3003         {
3004                 return false;
3005         }
3006
3007         return true;
3008 }
3009
3010 #if 0
3011 bool ServerMap::loadSectorFull(v2s16 p2d)
3012 {
3013         DSTACK(__FUNCTION_NAME);
3014
3015         MapSector *sector = NULL;
3016
3017         // The directory layout we're going to load from.
3018         //  1 - original sectors/xxxxzzzz/
3019         //  2 - new sectors2/xxx/zzz/
3020         //  If we load from anything but the latest structure, we will
3021         //  immediately save to the new one, and remove the old.
3022         int loadlayout = 1;
3023         std::string sectordir1 = getSectorDir(p2d, 1);
3024         std::string sectordir;
3025         if(fs::PathExists(sectordir1))
3026         {
3027                 sectordir = sectordir1;
3028         }
3029         else
3030         {
3031                 loadlayout = 2;
3032                 sectordir = getSectorDir(p2d, 2);
3033         }
3034
3035         try{
3036                 sector = loadSectorMeta(sectordir, loadlayout != 2);
3037         }
3038         catch(InvalidFilenameException &e)
3039         {
3040                 return false;
3041         }
3042         catch(FileNotGoodException &e)
3043         {
3044                 return false;
3045         }
3046         catch(std::exception &e)
3047         {
3048                 return false;
3049         }
3050
3051         /*
3052                 Load blocks
3053         */
3054         std::vector<fs::DirListNode> list2 = fs::GetDirListing
3055                         (sectordir);
3056         std::vector<fs::DirListNode>::iterator i2;
3057         for(i2=list2.begin(); i2!=list2.end(); i2++)
3058         {
3059                 // We want files
3060                 if(i2->dir)
3061                         continue;
3062                 try{
3063                         loadBlock(sectordir, i2->name, sector, loadlayout != 2);
3064                 }
3065                 catch(InvalidFilenameException &e)
3066                 {
3067                         // This catches unknown crap in directory
3068                 }
3069         }
3070
3071         if(loadlayout != 2)
3072         {
3073                 dstream<<"Sector converted to new layout - deleting "<<
3074                         sectordir1<<std::endl;
3075                 fs::RecursiveDelete(sectordir1);
3076         }
3077
3078         return true;
3079 }
3080 #endif
3081
3082 void ServerMap::saveBlock(MapBlock *block)
3083 {
3084         DSTACK(__FUNCTION_NAME);
3085         /*
3086                 Dummy blocks are not written
3087         */
3088         if(block->isDummy())
3089         {
3090                 /*v3s16 p = block->getPos();
3091                 dstream<<"ServerMap::saveBlock(): WARNING: Not writing dummy block "
3092                                 <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
3093                 return;
3094         }
3095
3096         // Format used for writing
3097         u8 version = SER_FMT_VER_HIGHEST;
3098         // Get destination
3099         v3s16 p3d = block->getPos();
3100
3101         v2s16 p2d(p3d.X, p3d.Z);
3102         std::string sectordir = getSectorDir(p2d);
3103
3104         createDirs(sectordir);
3105
3106         std::string fullpath = sectordir+"/"+getBlockFilename(p3d);
3107         std::ofstream o(fullpath.c_str(), std::ios_base::binary);
3108         if(o.good() == false)
3109                 throw FileNotGoodException("Cannot open block data");
3110
3111         /*
3112                 [0] u8 serialization version
3113                 [1] data
3114         */
3115         o.write((char*)&version, 1);
3116
3117         // Write basic data
3118         block->serialize(o, version);
3119
3120         // Write extra data stored on disk
3121         block->serializeDiskExtra(o, version);
3122
3123         // We just wrote it to the disk so clear modified flag
3124         block->resetModified();
3125 }
3126
3127 void ServerMap::loadBlock(std::string sectordir, std::string blockfile, MapSector *sector, bool save_after_load)
3128 {
3129         DSTACK(__FUNCTION_NAME);
3130
3131         std::string fullpath = sectordir+"/"+blockfile;
3132         try{
3133
3134                 std::ifstream is(fullpath.c_str(), std::ios_base::binary);
3135                 if(is.good() == false)
3136                         throw FileNotGoodException("Cannot open block file");
3137
3138                 v3s16 p3d = getBlockPos(sectordir, blockfile);
3139                 v2s16 p2d(p3d.X, p3d.Z);
3140
3141                 assert(sector->getPos() == p2d);
3142
3143                 u8 version = SER_FMT_VER_INVALID;
3144                 is.read((char*)&version, 1);
3145
3146                 if(is.fail())
3147                         throw SerializationError("ServerMap::loadBlock(): Failed"
3148                                         " to read MapBlock version");
3149
3150                 /*u32 block_size = MapBlock::serializedLength(version);
3151                 SharedBuffer<u8> data(block_size);
3152                 is.read((char*)*data, block_size);*/
3153
3154                 // This will always return a sector because we're the server
3155                 //MapSector *sector = emergeSector(p2d);
3156
3157                 MapBlock *block = NULL;
3158                 bool created_new = false;
3159                 block = sector->getBlockNoCreateNoEx(p3d.Y);
3160                 if(block == NULL)
3161                 {
3162                         block = sector->createBlankBlockNoInsert(p3d.Y);
3163                         created_new = true;
3164                 }
3165
3166                 // Read basic data
3167                 block->deSerialize(is, version);
3168
3169                 // Read extra data stored on disk
3170                 block->deSerializeDiskExtra(is, version);
3171
3172                 // If it's a new block, insert it to the map
3173                 if(created_new)
3174                         sector->insertBlock(block);
3175
3176                 /*
3177                         Save blocks loaded in old format in new format
3178                 */
3179
3180                 if(version < SER_FMT_VER_HIGHEST || save_after_load)
3181                 {
3182                         saveBlock(block);
3183                 }
3184
3185                 // We just loaded it from the disk, so it's up-to-date.
3186                 block->resetModified();
3187
3188         }
3189         catch(SerializationError &e)
3190         {
3191                 dstream<<"WARNING: Invalid block data on disk "
3192                                 <<"fullpath="<<fullpath
3193                                 <<" (SerializationError). "
3194                                 <<"what()="<<e.what()
3195                                 <<std::endl;
3196                                 //" Ignoring. A new one will be generated.
3197                 assert(0);
3198
3199                 // TODO: Backup file; name is in fullpath.
3200         }
3201 }
3202
3203 MapBlock* ServerMap::loadBlock(v3s16 blockpos)
3204 {
3205         DSTACK(__FUNCTION_NAME);
3206
3207         v2s16 p2d(blockpos.X, blockpos.Z);
3208
3209         // The directory layout we're going to load from.
3210         //  1 - original sectors/xxxxzzzz/
3211         //  2 - new sectors2/xxx/zzz/
3212         //  If we load from anything but the latest structure, we will
3213         //  immediately save to the new one, and remove the old.
3214         int loadlayout = 1;
3215         std::string sectordir1 = getSectorDir(p2d, 1);
3216         std::string sectordir;
3217         if(fs::PathExists(sectordir1))
3218         {
3219                 sectordir = sectordir1;
3220         }
3221         else
3222         {
3223                 loadlayout = 2;
3224                 sectordir = getSectorDir(p2d, 2);
3225         }
3226
3227         /*
3228                 Make sure sector is loaded
3229         */
3230         MapSector *sector = getSectorNoGenerateNoEx(p2d);
3231         if(sector == NULL)
3232         {
3233                 try{
3234                         sector = loadSectorMeta(sectordir, loadlayout != 2);
3235                 }
3236                 catch(InvalidFilenameException &e)
3237                 {
3238                         return false;
3239                 }
3240                 catch(FileNotGoodException &e)
3241                 {
3242                         return false;
3243                 }
3244                 catch(std::exception &e)
3245                 {
3246                         return false;
3247                 }
3248         }
3249
3250         /*
3251                 Make sure file exists
3252         */
3253
3254         std::string blockfilename = getBlockFilename(blockpos);
3255         if(fs::PathExists(sectordir+"/"+blockfilename) == false)
3256                 return NULL;
3257
3258         /*
3259                 Load block
3260         */
3261         loadBlock(sectordir, blockfilename, sector, loadlayout != 2);
3262         return getBlockNoCreateNoEx(blockpos);
3263 }
3264
3265 void ServerMap::PrintInfo(std::ostream &out)
3266 {
3267         out<<"ServerMap: ";
3268 }
3269
3270 #ifndef SERVER
3271
3272 /*
3273         ClientMap
3274 */
3275
3276 ClientMap::ClientMap(
3277                 Client *client,
3278                 MapDrawControl &control,
3279                 scene::ISceneNode* parent,
3280                 scene::ISceneManager* mgr,
3281                 s32 id
3282 ):
3283         Map(dout_client),
3284         scene::ISceneNode(parent, mgr, id),
3285         m_client(client),
3286         m_control(control),
3287         m_camera_position(0,0,0),
3288         m_camera_direction(0,0,1)
3289 {
3290         m_camera_mutex.Init();
3291         assert(m_camera_mutex.IsInitialized());
3292
3293         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
3294                         BS*1000000,BS*1000000,BS*1000000);
3295 }
3296
3297 ClientMap::~ClientMap()
3298 {
3299         /*JMutexAutoLock lock(mesh_mutex);
3300
3301         if(mesh != NULL)
3302         {
3303                 mesh->drop();
3304                 mesh = NULL;
3305         }*/
3306 }
3307
3308 MapSector * ClientMap::emergeSector(v2s16 p2d)
3309 {
3310         DSTACK(__FUNCTION_NAME);
3311         // Check that it doesn't exist already
3312         try{
3313                 return getSectorNoGenerate(p2d);
3314         }
3315         catch(InvalidPositionException &e)
3316         {
3317         }
3318
3319         // Create a sector
3320         ClientMapSector *sector = new ClientMapSector(this, p2d);
3321
3322         {
3323                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3324                 m_sectors.insert(p2d, sector);
3325         }
3326
3327         return sector;
3328 }
3329
3330 #if 0
3331 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
3332 {
3333         DSTACK(__FUNCTION_NAME);
3334         ClientMapSector *sector = NULL;
3335
3336         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3337
3338         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
3339
3340         if(n != NULL)
3341         {
3342                 sector = (ClientMapSector*)n->getValue();
3343                 assert(sector->getId() == MAPSECTOR_CLIENT);
3344         }
3345         else
3346         {
3347                 sector = new ClientMapSector(this, p2d);
3348                 {
3349                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
3350                         m_sectors.insert(p2d, sector);
3351                 }
3352         }
3353
3354         sector->deSerialize(is);
3355 }
3356 #endif
3357
3358 void ClientMap::OnRegisterSceneNode()
3359 {
3360         if(IsVisible)
3361         {
3362                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
3363                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
3364         }
3365
3366         ISceneNode::OnRegisterSceneNode();
3367 }
3368
3369 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
3370 {
3371         //m_dout<<DTIME<<"Rendering map..."<<std::endl;
3372         DSTACK(__FUNCTION_NAME);
3373
3374         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
3375
3376         /*
3377                 This is called two times per frame, reset on the non-transparent one
3378         */
3379         if(pass == scene::ESNRP_SOLID)
3380         {
3381                 m_last_drawn_sectors.clear();
3382         }
3383
3384         /*
3385                 Get time for measuring timeout.
3386
3387                 Measuring time is very useful for long delays when the
3388                 machine is swapping a lot.
3389         */
3390         int time1 = time(0);
3391
3392         //u32 daynight_ratio = m_client->getDayNightRatio();
3393
3394         m_camera_mutex.Lock();
3395         v3f camera_position = m_camera_position;
3396         v3f camera_direction = m_camera_direction;
3397         m_camera_mutex.Unlock();
3398
3399         /*
3400                 Get all blocks and draw all visible ones
3401         */
3402
3403         v3s16 cam_pos_nodes(
3404                         camera_position.X / BS,
3405                         camera_position.Y / BS,
3406                         camera_position.Z / BS);
3407
3408         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
3409
3410         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
3411         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
3412
3413         // Take a fair amount as we will be dropping more out later
3414         v3s16 p_blocks_min(
3415                         p_nodes_min.X / MAP_BLOCKSIZE - 2,
3416                         p_nodes_min.Y / MAP_BLOCKSIZE - 2,
3417                         p_nodes_min.Z / MAP_BLOCKSIZE - 2);
3418         v3s16 p_blocks_max(
3419                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
3420                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
3421                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
3422
3423         u32 vertex_count = 0;
3424
3425         // For limiting number of mesh updates per frame
3426         u32 mesh_update_count = 0;
3427
3428         u32 blocks_would_have_drawn = 0;
3429         u32 blocks_drawn = 0;
3430
3431         int timecheck_counter = 0;
3432         core::map<v2s16, MapSector*>::Iterator si;
3433         si = m_sectors.getIterator();
3434         for(; si.atEnd() == false; si++)
3435         {
3436                 {
3437                         timecheck_counter++;
3438                         if(timecheck_counter > 50)
3439                         {
3440                                 timecheck_counter = 0;
3441                                 int time2 = time(0);
3442                                 if(time2 > time1 + 4)
3443                                 {
3444                                         dstream<<"ClientMap::renderMap(): "
3445                                                 "Rendering takes ages, returning."
3446                                                 <<std::endl;
3447                                         return;
3448                                 }
3449                         }
3450                 }
3451
3452                 MapSector *sector = si.getNode()->getValue();
3453                 v2s16 sp = sector->getPos();
3454
3455                 if(m_control.range_all == false)
3456                 {
3457                         if(sp.X < p_blocks_min.X
3458                         || sp.X > p_blocks_max.X
3459                         || sp.Y < p_blocks_min.Z
3460                         || sp.Y > p_blocks_max.Z)
3461                                 continue;
3462                 }
3463
3464                 core::list< MapBlock * > sectorblocks;
3465                 sector->getBlocks(sectorblocks);
3466
3467                 /*
3468                         Draw blocks
3469                 */
3470
3471                 u32 sector_blocks_drawn = 0;
3472
3473                 core::list< MapBlock * >::Iterator i;
3474                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3475                 {
3476                         MapBlock *block = *i;
3477
3478                         /*
3479                                 Compare block position to camera position, skip
3480                                 if not seen on display
3481                         */
3482
3483                         float range = 100000 * BS;
3484                         if(m_control.range_all == false)
3485                                 range = m_control.wanted_range * BS;
3486
3487                         float d = 0.0;
3488                         if(isBlockInSight(block->getPos(), camera_position,
3489                                         camera_direction, range, &d) == false)
3490                         {
3491                                 continue;
3492                         }
3493
3494                         // Okay, this block will be drawn. Reset usage timer.
3495                         block->resetUsageTimer();
3496
3497                         // This is ugly (spherical distance limit?)
3498                         /*if(m_control.range_all == false &&
3499                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
3500                                 continue;*/
3501
3502 #if 1
3503                         /*
3504                                 Update expired mesh (used for day/night change)
3505
3506                                 It doesn't work exactly like it should now with the
3507                                 tasked mesh update but whatever.
3508                         */
3509
3510                         bool mesh_expired = false;
3511
3512                         {
3513                                 JMutexAutoLock lock(block->mesh_mutex);
3514
3515                                 mesh_expired = block->getMeshExpired();
3516
3517                                 // Mesh has not been expired and there is no mesh:
3518                                 // block has no content
3519                                 if(block->mesh == NULL && mesh_expired == false)
3520                                         continue;
3521                         }
3522
3523                         f32 faraway = BS*50;
3524                         //f32 faraway = m_control.wanted_range * BS;
3525
3526                         /*
3527                                 This has to be done with the mesh_mutex unlocked
3528                         */
3529                         // Pretty random but this should work somewhat nicely
3530                         if(mesh_expired && (
3531                                         (mesh_update_count < 3
3532                                                 && (d < faraway || mesh_update_count < 2)
3533                                         )
3534                                         ||
3535                                         (m_control.range_all && mesh_update_count < 20)
3536                                 )
3537                         )
3538                         /*if(mesh_expired && mesh_update_count < 6
3539                                         && (d < faraway || mesh_update_count < 3))*/
3540                         {
3541                                 mesh_update_count++;
3542
3543                                 // Mesh has been expired: generate new mesh
3544                                 //block->updateMesh(daynight_ratio);
3545                                 m_client->addUpdateMeshTask(block->getPos());
3546
3547                                 mesh_expired = false;
3548                         }
3549
3550 #endif
3551                         /*
3552                                 Draw the faces of the block
3553                         */
3554                         {
3555                                 JMutexAutoLock lock(block->mesh_mutex);
3556
3557                                 scene::SMesh *mesh = block->mesh;
3558
3559                                 if(mesh == NULL)
3560                                         continue;
3561
3562                                 blocks_would_have_drawn++;
3563                                 if(blocks_drawn >= m_control.wanted_max_blocks
3564                                                 && m_control.range_all == false
3565                                                 && d > m_control.wanted_min_range * BS)
3566                                         continue;
3567
3568                                 blocks_drawn++;
3569                                 sector_blocks_drawn++;
3570
3571                                 u32 c = mesh->getMeshBufferCount();
3572
3573                                 for(u32 i=0; i<c; i++)
3574                                 {
3575                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
3576                                         const video::SMaterial& material = buf->getMaterial();
3577                                         video::IMaterialRenderer* rnd =
3578                                                         driver->getMaterialRenderer(material.MaterialType);
3579                                         bool transparent = (rnd && rnd->isTransparent());
3580                                         // Render transparent on transparent pass and likewise.
3581                                         if(transparent == is_transparent_pass)
3582                                         {
3583                                                 /*
3584                                                         This *shouldn't* hurt too much because Irrlicht
3585                                                         doesn't change opengl textures if the old
3586                                                         material is set again.
3587                                                 */
3588                                                 driver->setMaterial(buf->getMaterial());
3589                                                 driver->drawMeshBuffer(buf);
3590                                                 vertex_count += buf->getVertexCount();
3591                                         }
3592                                 }
3593                         }
3594                 } // foreach sectorblocks
3595
3596                 if(sector_blocks_drawn != 0)
3597                 {
3598                         m_last_drawn_sectors[sp] = true;
3599                 }
3600         }
3601
3602         m_control.blocks_drawn = blocks_drawn;
3603         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
3604
3605         /*dstream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
3606                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
3607 }
3608
3609 bool ClientMap::setTempMod(v3s16 p, NodeMod mod,
3610                 core::map<v3s16, MapBlock*> *affected_blocks)
3611 {
3612         bool changed = false;
3613         /*
3614                 Add it to all blocks touching it
3615         */
3616         v3s16 dirs[7] = {
3617                 v3s16(0,0,0), // this
3618                 v3s16(0,0,1), // back
3619                 v3s16(0,1,0), // top
3620                 v3s16(1,0,0), // right
3621                 v3s16(0,0,-1), // front
3622                 v3s16(0,-1,0), // bottom
3623                 v3s16(-1,0,0), // left
3624         };
3625         for(u16 i=0; i<7; i++)
3626         {
3627                 v3s16 p2 = p + dirs[i];
3628                 // Block position of neighbor (or requested) node
3629                 v3s16 blockpos = getNodeBlockPos(p2);
3630                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3631                 if(blockref == NULL)
3632                         continue;
3633                 // Relative position of requested node
3634                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3635                 if(blockref->setTempMod(relpos, mod))
3636                 {
3637                         changed = true;
3638                 }
3639         }
3640         if(changed && affected_blocks!=NULL)
3641         {
3642                 for(u16 i=0; i<7; i++)
3643                 {
3644                         v3s16 p2 = p + dirs[i];
3645                         // Block position of neighbor (or requested) node
3646                         v3s16 blockpos = getNodeBlockPos(p2);
3647                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3648                         if(blockref == NULL)
3649                                 continue;
3650                         affected_blocks->insert(blockpos, blockref);
3651                 }
3652         }
3653         return changed;
3654 }
3655
3656 bool ClientMap::clearTempMod(v3s16 p,
3657                 core::map<v3s16, MapBlock*> *affected_blocks)
3658 {
3659         bool changed = false;
3660         v3s16 dirs[7] = {
3661                 v3s16(0,0,0), // this
3662                 v3s16(0,0,1), // back
3663                 v3s16(0,1,0), // top
3664                 v3s16(1,0,0), // right
3665                 v3s16(0,0,-1), // front
3666                 v3s16(0,-1,0), // bottom
3667                 v3s16(-1,0,0), // left
3668         };
3669         for(u16 i=0; i<7; i++)
3670         {
3671                 v3s16 p2 = p + dirs[i];
3672                 // Block position of neighbor (or requested) node
3673                 v3s16 blockpos = getNodeBlockPos(p2);
3674                 MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3675                 if(blockref == NULL)
3676                         continue;
3677                 // Relative position of requested node
3678                 v3s16 relpos = p - blockpos*MAP_BLOCKSIZE;
3679                 if(blockref->clearTempMod(relpos))
3680                 {
3681                         changed = true;
3682                 }
3683         }
3684         if(changed && affected_blocks!=NULL)
3685         {
3686                 for(u16 i=0; i<7; i++)
3687                 {
3688                         v3s16 p2 = p + dirs[i];
3689                         // Block position of neighbor (or requested) node
3690                         v3s16 blockpos = getNodeBlockPos(p2);
3691                         MapBlock * blockref = getBlockNoCreateNoEx(blockpos);
3692                         if(blockref == NULL)
3693                                 continue;
3694                         affected_blocks->insert(blockpos, blockref);
3695                 }
3696         }
3697         return changed;
3698 }
3699
3700 void ClientMap::expireMeshes(bool only_daynight_diffed)
3701 {
3702         TimeTaker timer("expireMeshes()");
3703
3704         core::map<v2s16, MapSector*>::Iterator si;
3705         si = m_sectors.getIterator();
3706         for(; si.atEnd() == false; si++)
3707         {
3708                 MapSector *sector = si.getNode()->getValue();
3709
3710                 core::list< MapBlock * > sectorblocks;
3711                 sector->getBlocks(sectorblocks);
3712
3713                 core::list< MapBlock * >::Iterator i;
3714                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
3715                 {
3716                         MapBlock *block = *i;
3717
3718                         if(only_daynight_diffed && dayNightDiffed(block->getPos()) == false)
3719                         {
3720                                 continue;
3721                         }
3722
3723                         {
3724                                 JMutexAutoLock lock(block->mesh_mutex);
3725                                 if(block->mesh != NULL)
3726                                 {
3727                                         /*block->mesh->drop();
3728                                         block->mesh = NULL;*/
3729                                         block->setMeshExpired(true);
3730                                 }
3731                         }
3732                 }
3733         }
3734 }
3735
3736 void ClientMap::updateMeshes(v3s16 blockpos, u32 daynight_ratio)
3737 {
3738         assert(mapType() == MAPTYPE_CLIENT);
3739
3740         try{
3741                 v3s16 p = blockpos + v3s16(0,0,0);
3742                 MapBlock *b = getBlockNoCreate(p);
3743                 b->updateMesh(daynight_ratio);
3744                 //b->setMeshExpired(true);
3745         }
3746         catch(InvalidPositionException &e){}
3747         // Leading edge
3748         try{
3749                 v3s16 p = blockpos + v3s16(-1,0,0);
3750                 MapBlock *b = getBlockNoCreate(p);
3751                 b->updateMesh(daynight_ratio);
3752                 //b->setMeshExpired(true);
3753         }
3754         catch(InvalidPositionException &e){}
3755         try{
3756                 v3s16 p = blockpos + v3s16(0,-1,0);
3757                 MapBlock *b = getBlockNoCreate(p);
3758                 b->updateMesh(daynight_ratio);
3759                 //b->setMeshExpired(true);
3760         }
3761         catch(InvalidPositionException &e){}
3762         try{
3763                 v3s16 p = blockpos + v3s16(0,0,-1);
3764                 MapBlock *b = getBlockNoCreate(p);
3765                 b->updateMesh(daynight_ratio);
3766                 //b->setMeshExpired(true);
3767         }
3768         catch(InvalidPositionException &e){}
3769 }
3770
3771 #if 0
3772 /*
3773         Update mesh of block in which the node is, and if the node is at the
3774         leading edge, update the appropriate leading blocks too.
3775 */
3776 void ClientMap::updateNodeMeshes(v3s16 nodepos, u32 daynight_ratio)
3777 {
3778         v3s16 dirs[4] = {
3779                 v3s16(0,0,0),
3780                 v3s16(-1,0,0),
3781                 v3s16(0,-1,0),
3782                 v3s16(0,0,-1),
3783         };
3784         v3s16 blockposes[4];
3785         for(u32 i=0; i<4; i++)
3786         {
3787                 v3s16 np = nodepos + dirs[i];
3788                 blockposes[i] = getNodeBlockPos(np);
3789                 // Don't update mesh of block if it has been done already
3790                 bool already_updated = false;
3791                 for(u32 j=0; j<i; j++)
3792                 {
3793                         if(blockposes[j] == blockposes[i])
3794                         {
3795                                 already_updated = true;
3796                                 break;
3797                         }
3798                 }
3799                 if(already_updated)
3800                         continue;
3801                 // Update mesh
3802                 MapBlock *b = getBlockNoCreate(blockposes[i]);
3803                 b->updateMesh(daynight_ratio);
3804         }
3805 }
3806 #endif
3807
3808 void ClientMap::PrintInfo(std::ostream &out)
3809 {
3810         out<<"ClientMap: ";
3811 }
3812
3813 #endif // !SERVER
3814
3815 /*
3816         MapVoxelManipulator
3817 */
3818
3819 MapVoxelManipulator::MapVoxelManipulator(Map *map)
3820 {
3821         m_map = map;
3822 }
3823
3824 MapVoxelManipulator::~MapVoxelManipulator()
3825 {
3826         /*dstream<<"MapVoxelManipulator: blocks: "<<m_loaded_blocks.size()
3827                         <<std::endl;*/
3828 }
3829
3830 void MapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3831 {
3832         TimeTaker timer1("emerge", &emerge_time);
3833
3834         // Units of these are MapBlocks
3835         v3s16 p_min = getNodeBlockPos(a.MinEdge);
3836         v3s16 p_max = getNodeBlockPos(a.MaxEdge);
3837
3838         VoxelArea block_area_nodes
3839                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3840
3841         addArea(block_area_nodes);
3842
3843         for(s32 z=p_min.Z; z<=p_max.Z; z++)
3844         for(s32 y=p_min.Y; y<=p_max.Y; y++)
3845         for(s32 x=p_min.X; x<=p_max.X; x++)
3846         {
3847                 v3s16 p(x,y,z);
3848                 core::map<v3s16, bool>::Node *n;
3849                 n = m_loaded_blocks.find(p);
3850                 if(n != NULL)
3851                         continue;
3852
3853                 bool block_data_inexistent = false;
3854                 try
3855                 {
3856                         TimeTaker timer1("emerge load", &emerge_load_time);
3857
3858                         /*dstream<<"Loading block (caller_id="<<caller_id<<")"
3859                                         <<" ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3860                                         <<" wanted area: ";
3861                         a.print(dstream);
3862                         dstream<<std::endl;*/
3863
3864                         MapBlock *block = m_map->getBlockNoCreate(p);
3865                         if(block->isDummy())
3866                                 block_data_inexistent = true;
3867                         else
3868                                 block->copyTo(*this);
3869                 }
3870                 catch(InvalidPositionException &e)
3871                 {
3872                         block_data_inexistent = true;
3873                 }
3874
3875                 if(block_data_inexistent)
3876                 {
3877                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3878                         // Fill with VOXELFLAG_INEXISTENT
3879                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
3880                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
3881                         {
3882                                 s32 i = m_area.index(a.MinEdge.X,y,z);
3883                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
3884                         }
3885                 }
3886
3887                 m_loaded_blocks.insert(p, !block_data_inexistent);
3888         }
3889
3890         //dstream<<"emerge done"<<std::endl;
3891 }
3892
3893 /*
3894         SUGG: Add an option to only update eg. water and air nodes.
3895               This will make it interfere less with important stuff if
3896                   run on background.
3897 */
3898 void MapVoxelManipulator::blitBack
3899                 (core::map<v3s16, MapBlock*> & modified_blocks)
3900 {
3901         if(m_area.getExtent() == v3s16(0,0,0))
3902                 return;
3903
3904         //TimeTaker timer1("blitBack");
3905
3906         /*dstream<<"blitBack(): m_loaded_blocks.size()="
3907                         <<m_loaded_blocks.size()<<std::endl;*/
3908
3909         /*
3910                 Initialize block cache
3911         */
3912         v3s16 blockpos_last;
3913         MapBlock *block = NULL;
3914         bool block_checked_in_modified = false;
3915
3916         for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
3917         for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
3918         for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
3919         {
3920                 v3s16 p(x,y,z);
3921
3922                 u8 f = m_flags[m_area.index(p)];
3923                 if(f & (VOXELFLAG_NOT_LOADED|VOXELFLAG_INEXISTENT))
3924                         continue;
3925
3926                 MapNode &n = m_data[m_area.index(p)];
3927
3928                 v3s16 blockpos = getNodeBlockPos(p);
3929
3930                 try
3931                 {
3932                         // Get block
3933                         if(block == NULL || blockpos != blockpos_last){
3934                                 block = m_map->getBlockNoCreate(blockpos);
3935                                 blockpos_last = blockpos;
3936                                 block_checked_in_modified = false;
3937                         }
3938
3939                         // Calculate relative position in block
3940                         v3s16 relpos = p - blockpos * MAP_BLOCKSIZE;
3941
3942                         // Don't continue if nothing has changed here
3943                         if(block->getNode(relpos) == n)
3944                                 continue;
3945
3946                         //m_map->setNode(m_area.MinEdge + p, n);
3947                         block->setNode(relpos, n);
3948
3949                         /*
3950                                 Make sure block is in modified_blocks
3951                         */
3952                         if(block_checked_in_modified == false)
3953                         {
3954                                 modified_blocks[blockpos] = block;
3955                                 block_checked_in_modified = true;
3956                         }
3957                 }
3958                 catch(InvalidPositionException &e)
3959                 {
3960                 }
3961         }
3962 }
3963
3964 ManualMapVoxelManipulator::ManualMapVoxelManipulator(Map *map):
3965                 MapVoxelManipulator(map),
3966                 m_create_area(false)
3967 {
3968 }
3969
3970 ManualMapVoxelManipulator::~ManualMapVoxelManipulator()
3971 {
3972 }
3973
3974 void ManualMapVoxelManipulator::emerge(VoxelArea a, s32 caller_id)
3975 {
3976         // Just create the area so that it can be pointed to
3977         VoxelManipulator::emerge(a, caller_id);
3978 }
3979
3980 void ManualMapVoxelManipulator::initialEmerge(
3981                 v3s16 blockpos_min, v3s16 blockpos_max)
3982 {
3983         TimeTaker timer1("initialEmerge", &emerge_time);
3984
3985         // Units of these are MapBlocks
3986         v3s16 p_min = blockpos_min;
3987         v3s16 p_max = blockpos_max;
3988
3989         VoxelArea block_area_nodes
3990                         (p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
3991
3992         u32 size_MB = block_area_nodes.getVolume()*4/1000000;
3993         if(size_MB >= 1)
3994         {
3995                 dstream<<"initialEmerge: area: ";
3996                 block_area_nodes.print(dstream);
3997                 dstream<<" ("<<size_MB<<"MB)";
3998                 dstream<<std::endl;
3999         }
4000
4001         addArea(block_area_nodes);
4002
4003         for(s32 z=p_min.Z; z<=p_max.Z; z++)
4004         for(s32 y=p_min.Y; y<=p_max.Y; y++)
4005         for(s32 x=p_min.X; x<=p_max.X; x++)
4006         {
4007                 v3s16 p(x,y,z);
4008                 core::map<v3s16, bool>::Node *n;
4009                 n = m_loaded_blocks.find(p);
4010                 if(n != NULL)
4011                         continue;
4012
4013                 bool block_data_inexistent = false;
4014                 try
4015                 {
4016                         TimeTaker timer1("emerge load", &emerge_load_time);
4017
4018                         MapBlock *block = m_map->getBlockNoCreate(p);
4019                         if(block->isDummy())
4020                                 block_data_inexistent = true;
4021                         else
4022                                 block->copyTo(*this);
4023                 }
4024                 catch(InvalidPositionException &e)
4025                 {
4026                         block_data_inexistent = true;
4027                 }
4028
4029                 if(block_data_inexistent)
4030                 {
4031                         /*
4032                                 Mark area inexistent
4033                         */
4034                         VoxelArea a(p*MAP_BLOCKSIZE, (p+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
4035                         // Fill with VOXELFLAG_INEXISTENT
4036                         for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
4037                         for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
4038                         {
4039                                 s32 i = m_area.index(a.MinEdge.X,y,z);
4040                                 memset(&m_flags[i], VOXELFLAG_INEXISTENT, MAP_BLOCKSIZE);
4041                         }
4042                 }
4043
4044                 m_loaded_blocks.insert(p, !block_data_inexistent);
4045         }
4046 }
4047
4048 void ManualMapVoxelManipulator::blitBackAll(
4049                 core::map<v3s16, MapBlock*> * modified_blocks)
4050 {
4051         if(m_area.getExtent() == v3s16(0,0,0))
4052                 return;
4053
4054         /*
4055                 Copy data of all blocks
4056         */
4057         for(core::map<v3s16, bool>::Iterator
4058                         i = m_loaded_blocks.getIterator();
4059                         i.atEnd() == false; i++)
4060         {
4061                 bool existed = i.getNode()->getValue();
4062                 if(existed == false)
4063                         continue;
4064                 v3s16 p = i.getNode()->getKey();
4065                 MapBlock *block = m_map->getBlockNoCreateNoEx(p);
4066                 if(block == NULL)
4067                 {
4068                         dstream<<"WARNING: "<<__FUNCTION_NAME
4069                                         <<": got NULL block "
4070                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<")"
4071                                         <<std::endl;
4072                         continue;
4073                 }
4074
4075                 block->copyFrom(*this);
4076
4077                 if(modified_blocks)
4078                         modified_blocks->insert(p, block);
4079         }
4080 }
4081
4082 //END