3 Copyright (C) 2010-2015 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
4 Copyright (C) 2010-2015 celeron55, Perttu Ahola <celeron55@gmail.com>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License along
17 with this program; if not, write to the Free Software Foundation, Inc.,
18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include "content_sao.h"
32 #include "voxelalgorithms.h"
37 #include "serialization.h"
38 #include "util/serialize.h"
39 #include "util/numeric.h"
42 #include "mapgen_flat.h"
43 #include "mapgen_fractal.h"
44 #include "mapgen_v5.h"
45 #include "mapgen_v6.h"
46 #include "mapgen_v7.h"
47 #include "mapgen_valleys.h"
48 #include "mapgen_singlenode.h"
50 #include "dungeongen.h"
52 FlagDesc flagdesc_mapgen[] = {
54 {"dungeons", MG_DUNGEONS},
56 {"decorations", MG_DECORATIONS},
60 FlagDesc flagdesc_gennotify[] = {
61 {"dungeon", 1 << GENNOTIFY_DUNGEON},
62 {"temple", 1 << GENNOTIFY_TEMPLE},
63 {"cave_begin", 1 << GENNOTIFY_CAVE_BEGIN},
64 {"cave_end", 1 << GENNOTIFY_CAVE_END},
65 {"large_cave_begin", 1 << GENNOTIFY_LARGECAVE_BEGIN},
66 {"large_cave_end", 1 << GENNOTIFY_LARGECAVE_END},
67 {"decoration", 1 << GENNOTIFY_DECORATION},
80 static MapgenDesc g_reg_mapgens[] = {
87 {"singlenode", false},
91 ARRLEN(g_reg_mapgens) == MAPGEN_INVALID,
92 registered_mapgens_is_wrong_size);
114 Mapgen::Mapgen(int mapgenid, MapgenParams *params, EmergeManager *emerge) :
115 gennotify(emerge->gen_notify_on, &emerge->gen_notify_on_deco_ids)
119 water_level = params->water_level;
120 flags = params->flags;
121 csize = v3s16(1, 1, 1) * (params->chunksize * MAP_BLOCKSIZE);
124 We are losing half our entropy by doing this, but it is necessary to
125 preserve reverse compatibility. If the top half of our current 64 bit
126 seeds ever starts getting used, existing worlds will break due to a
127 different hash outcome and no way to differentiate between versions.
129 A solution could be to add a new bit to designate that the top half of
130 the seed value should be used, essentially a 1-bit version code, but
131 this would require increasing the total size of a seed to 9 bytes (yuck)
133 It's probably okay if this never gets fixed. 4.2 billion possibilities
134 ought to be enough for anyone.
136 seed = (s32)params->seed;
151 MapgenType Mapgen::getMapgenType(const std::string &mgname)
153 for (size_t i = 0; i != ARRLEN(g_reg_mapgens); i++) {
154 if (mgname == g_reg_mapgens[i].name)
155 return (MapgenType)i;
158 return MAPGEN_INVALID;
162 const char *Mapgen::getMapgenName(MapgenType mgtype)
164 size_t index = (size_t)mgtype;
165 if (index == MAPGEN_INVALID || index >= ARRLEN(g_reg_mapgens))
168 return g_reg_mapgens[index].name;
172 Mapgen *Mapgen::createMapgen(MapgenType mgtype, int mgid,
173 MapgenParams *params, EmergeManager *emerge)
177 return new MapgenFlat(mgid, (MapgenFlatParams *)params, emerge);
179 return new MapgenFractal(mgid, (MapgenFractalParams *)params, emerge);
180 case MAPGEN_SINGLENODE:
181 return new MapgenSinglenode(mgid, (MapgenSinglenodeParams *)params, emerge);
183 return new MapgenV5(mgid, (MapgenV5Params *)params, emerge);
185 return new MapgenV6(mgid, (MapgenV6Params *)params, emerge);
187 return new MapgenV7(mgid, (MapgenV7Params *)params, emerge);
189 return new MapgenValleys(mgid, (MapgenValleysParams *)params, emerge);
196 MapgenParams *Mapgen::createMapgenParams(MapgenType mgtype)
200 return new MapgenFlatParams;
202 return new MapgenFractalParams;
203 case MAPGEN_SINGLENODE:
204 return new MapgenSinglenodeParams;
206 return new MapgenV5Params;
208 return new MapgenV6Params;
210 return new MapgenV7Params;
212 return new MapgenValleysParams;
219 void Mapgen::getMapgenNames(std::vector<const char *> *mgnames, bool include_hidden)
221 for (u32 i = 0; i != ARRLEN(g_reg_mapgens); i++) {
222 if (include_hidden || g_reg_mapgens[i].is_user_visible)
223 mgnames->push_back(g_reg_mapgens[i].name);
228 u32 Mapgen::getBlockSeed(v3s16 p, s32 seed)
237 u32 Mapgen::getBlockSeed2(v3s16 p, s32 seed)
239 u32 n = 1619 * p.X + 31337 * p.Y + 52591 * p.Z + 1013 * seed;
241 return (n * (n * n * 60493 + 19990303) + 1376312589);
245 // Returns Y one under area minimum if not found
246 s16 Mapgen::findGroundLevelFull(v2s16 p2d)
248 v3s16 em = vm->m_area.getExtent();
249 s16 y_nodes_max = vm->m_area.MaxEdge.Y;
250 s16 y_nodes_min = vm->m_area.MinEdge.Y;
251 u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
254 for (y = y_nodes_max; y >= y_nodes_min; y--) {
255 MapNode &n = vm->m_data[i];
256 if (ndef->get(n).walkable)
259 vm->m_area.add_y(em, i, -1);
261 return (y >= y_nodes_min) ? y : y_nodes_min - 1;
265 // Returns -MAX_MAP_GENERATION_LIMIT if not found
266 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax)
268 v3s16 em = vm->m_area.getExtent();
269 u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
272 for (y = ymax; y >= ymin; y--) {
273 MapNode &n = vm->m_data[i];
274 if (ndef->get(n).walkable)
277 vm->m_area.add_y(em, i, -1);
279 return (y >= ymin) ? y : -MAX_MAP_GENERATION_LIMIT;
283 // Returns -MAX_MAP_GENERATION_LIMIT if not found or if ground is found first
284 s16 Mapgen::findLiquidSurface(v2s16 p2d, s16 ymin, s16 ymax)
286 v3s16 em = vm->m_area.getExtent();
287 u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
290 for (y = ymax; y >= ymin; y--) {
291 MapNode &n = vm->m_data[i];
292 if (ndef->get(n).walkable)
293 return -MAX_MAP_GENERATION_LIMIT;
294 else if (ndef->get(n).isLiquid())
297 vm->m_area.add_y(em, i, -1);
299 return (y >= ymin) ? y : -MAX_MAP_GENERATION_LIMIT;
303 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax)
308 //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
310 for (s16 z = nmin.Z; z <= nmax.Z; z++) {
311 for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
312 s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
314 heightmap[index] = y;
317 //printf("updateHeightmap: %dus\n", t.stop());
320 inline bool Mapgen::isLiquidHorizontallyFlowable(u32 vi, v3s16 em)
323 vm->m_area.add_x(em, vi_neg_x, -1);
324 if (vm->m_data[vi_neg_x].getContent() != CONTENT_IGNORE) {
325 const ContentFeatures &c_nx = ndef->get(vm->m_data[vi_neg_x]);
326 if (c_nx.floodable && !c_nx.isLiquid())
330 vm->m_area.add_x(em, vi_pos_x, +1);
331 if (vm->m_data[vi_pos_x].getContent() != CONTENT_IGNORE) {
332 const ContentFeatures &c_px = ndef->get(vm->m_data[vi_pos_x]);
333 if (c_px.floodable && !c_px.isLiquid())
337 vm->m_area.add_z(em, vi_neg_z, -1);
338 if (vm->m_data[vi_neg_z].getContent() != CONTENT_IGNORE) {
339 const ContentFeatures &c_nz = ndef->get(vm->m_data[vi_neg_z]);
340 if (c_nz.floodable && !c_nz.isLiquid())
344 vm->m_area.add_z(em, vi_pos_z, +1);
345 if (vm->m_data[vi_pos_z].getContent() != CONTENT_IGNORE) {
346 const ContentFeatures &c_pz = ndef->get(vm->m_data[vi_pos_z]);
347 if (c_pz.floodable && !c_pz.isLiquid())
353 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax)
355 bool isignored, isliquid, wasignored, wasliquid, waschecked, waspushed;
356 v3s16 em = vm->m_area.getExtent();
358 for (s16 z = nmin.Z + 1; z <= nmax.Z - 1; z++)
359 for (s16 x = nmin.X + 1; x <= nmax.X - 1; x++) {
365 u32 vi = vm->m_area.index(x, nmax.Y, z);
366 for (s16 y = nmax.Y; y >= nmin.Y; y--) {
367 isignored = vm->m_data[vi].getContent() == CONTENT_IGNORE;
368 isliquid = ndef->get(vm->m_data[vi]).isLiquid();
370 if (isignored || wasignored || isliquid == wasliquid) {
371 // Neither topmost node of liquid column nor topmost node below column
374 } else if (isliquid) {
375 // This is the topmost node in the column
376 bool ispushed = false;
377 if (isLiquidHorizontallyFlowable(vi, em)) {
378 trans_liquid->push_back(v3s16(x, y, z));
381 // Remember waschecked and waspushed to avoid repeated
382 // checks/pushes in case the column consists of only this node
384 waspushed = ispushed;
386 // This is the topmost node below a liquid column
388 vm->m_area.add_y(em, vi_above, 1);
389 if (!waspushed && (ndef->get(vm->m_data[vi]).floodable ||
390 (!waschecked && isLiquidHorizontallyFlowable(vi_above, em)))) {
391 // Push back the lowest node in the column which is one
392 // node above this one
393 trans_liquid->push_back(v3s16(x, y + 1, z));
397 wasliquid = isliquid;
398 wasignored = isignored;
399 vm->m_area.add_y(em, vi, -1);
405 void Mapgen::setLighting(u8 light, v3s16 nmin, v3s16 nmax)
407 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
408 VoxelArea a(nmin, nmax);
410 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
411 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
412 u32 i = vm->m_area.index(a.MinEdge.X, y, z);
413 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
414 vm->m_data[i].param1 = light;
420 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light)
422 if (light <= 1 || !a.contains(p))
425 u32 vi = vm->m_area.index(p);
426 MapNode &n = vm->m_data[vi];
428 // Decay light in each of the banks separately
429 u8 light_day = light & 0x0F;
433 u8 light_night = light & 0xF0;
437 // Bail out only if we have no more light from either bank to propogate, or
438 // we hit a solid block that light cannot pass through.
439 if ((light_day <= (n.param1 & 0x0F) &&
440 light_night <= (n.param1 & 0xF0)) ||
441 !ndef->get(n).light_propagates)
444 // Since this recursive function only terminates when there is no light from
445 // either bank left, we need to take the max of both banks into account for
446 // the case where spreading has stopped for one light bank but not the other.
447 light = MYMAX(light_day, n.param1 & 0x0F) |
448 MYMAX(light_night, n.param1 & 0xF0);
452 lightSpread(a, p + v3s16(0, 0, 1), light);
453 lightSpread(a, p + v3s16(0, 1, 0), light);
454 lightSpread(a, p + v3s16(1, 0, 0), light);
455 lightSpread(a, p - v3s16(0, 0, 1), light);
456 lightSpread(a, p - v3s16(0, 1, 0), light);
457 lightSpread(a, p - v3s16(1, 0, 0), light);
461 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax, v3s16 full_nmin, v3s16 full_nmax,
462 bool propagate_shadow)
464 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
465 //TimeTaker t("updateLighting");
467 propagateSunlight(nmin, nmax, propagate_shadow);
468 spreadLight(full_nmin, full_nmax);
470 //printf("updateLighting: %dms\n", t.stop());
474 void Mapgen::propagateSunlight(v3s16 nmin, v3s16 nmax, bool propagate_shadow)
476 //TimeTaker t("propagateSunlight");
477 VoxelArea a(nmin, nmax);
478 bool block_is_underground = (water_level >= nmax.Y);
479 v3s16 em = vm->m_area.getExtent();
481 // NOTE: Direct access to the low 4 bits of param1 is okay here because,
482 // by definition, sunlight will never be in the night lightbank.
484 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
485 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
486 // see if we can get a light value from the overtop
487 u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
488 if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
489 if (block_is_underground)
491 } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN &&
495 vm->m_area.add_y(em, i, -1);
497 for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
498 MapNode &n = vm->m_data[i];
499 if (!ndef->get(n).sunlight_propagates)
501 n.param1 = LIGHT_SUN;
502 vm->m_area.add_y(em, i, -1);
506 //printf("propagateSunlight: %dms\n", t.stop());
510 void Mapgen::spreadLight(v3s16 nmin, v3s16 nmax)
512 //TimeTaker t("spreadLight");
513 VoxelArea a(nmin, nmax);
515 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
516 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
517 u32 i = vm->m_area.index(a.MinEdge.X, y, z);
518 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
519 MapNode &n = vm->m_data[i];
520 if (n.getContent() == CONTENT_IGNORE)
523 const ContentFeatures &cf = ndef->get(n);
524 if (!cf.light_propagates)
527 // TODO(hmmmmm): Abstract away direct param1 accesses with a
528 // wrapper, but something lighter than MapNode::get/setLight
530 u8 light_produced = cf.light_source;
532 n.param1 = light_produced | (light_produced << 4);
536 lightSpread(a, v3s16(x, y, z + 1), light);
537 lightSpread(a, v3s16(x, y + 1, z ), light);
538 lightSpread(a, v3s16(x + 1, y, z ), light);
539 lightSpread(a, v3s16(x, y, z - 1), light);
540 lightSpread(a, v3s16(x, y - 1, z ), light);
541 lightSpread(a, v3s16(x - 1, y, z ), light);
547 //printf("spreadLight: %dms\n", t.stop());
555 MapgenBasic::MapgenBasic(int mapgenid, MapgenParams *params, EmergeManager *emerge)
556 : Mapgen(mapgenid, params, emerge)
558 this->m_emerge = emerge;
559 this->m_bmgr = emerge->biomemgr;
561 //// Here, 'stride' refers to the number of elements needed to skip to index
562 //// an adjacent element for that coordinate in noise/height/biome maps
563 //// (*not* vmanip content map!)
565 // Note there is no X stride explicitly defined. Items adjacent in the X
566 // coordinate are assumed to be adjacent in memory as well (i.e. stride of 1).
568 // Number of elements to skip to get to the next Y coordinate
569 this->ystride = csize.X;
571 // Number of elements to skip to get to the next Z coordinate
572 this->zstride = csize.X * csize.Y;
574 // Z-stride value for maps oversized for 1-down overgeneration
575 this->zstride_1d = csize.X * (csize.Y + 1);
577 // Z-stride value for maps oversized for 1-up 1-down overgeneration
578 this->zstride_1u1d = csize.X * (csize.Y + 2);
580 //// Allocate heightmap
581 this->heightmap = new s16[csize.X * csize.Z];
583 //// Initialize biome generator
584 // TODO(hmmmm): should we have a way to disable biomemanager biomes?
585 biomegen = m_bmgr->createBiomeGen(BIOMEGEN_ORIGINAL, params->bparams, csize);
586 biomemap = biomegen->biomemap;
588 //// Look up some commonly used content
589 c_stone = ndef->getId("mapgen_stone");
590 c_water_source = ndef->getId("mapgen_water_source");
591 c_desert_stone = ndef->getId("mapgen_desert_stone");
592 c_sandstone = ndef->getId("mapgen_sandstone");
593 c_river_water_source = ndef->getId("mapgen_river_water_source");
595 // Fall back to more basic content if not defined
596 if (c_desert_stone == CONTENT_IGNORE)
597 c_desert_stone = c_stone;
598 if (c_sandstone == CONTENT_IGNORE)
599 c_sandstone = c_stone;
600 if (c_river_water_source == CONTENT_IGNORE)
601 c_river_water_source = c_water_source;
603 //// Content used for dungeon generation
604 c_cobble = ndef->getId("mapgen_cobble");
605 c_stair_cobble = ndef->getId("mapgen_stair_cobble");
606 c_mossycobble = ndef->getId("mapgen_mossycobble");
607 c_sandstonebrick = ndef->getId("mapgen_sandstonebrick");
608 c_stair_sandstonebrick = ndef->getId("mapgen_stair_sandstonebrick");
610 // Fall back to more basic content if not defined
611 if (c_mossycobble == CONTENT_IGNORE)
612 c_mossycobble = c_cobble;
613 if (c_stair_cobble == CONTENT_IGNORE)
614 c_stair_cobble = c_cobble;
615 if (c_sandstonebrick == CONTENT_IGNORE)
616 c_sandstonebrick = c_sandstone;
617 if (c_stair_sandstonebrick == CONTENT_IGNORE)
618 c_stair_sandstonebrick = c_sandstone;
622 MapgenBasic::~MapgenBasic()
629 MgStoneType MapgenBasic::generateBiomes()
631 // can't generate biomes without a biome generator!
635 v3s16 em = vm->m_area.getExtent();
637 MgStoneType stone_type = MGSTONE_STONE;
639 noise_filler_depth->perlinMap2D(node_min.X, node_min.Z);
641 for (s16 z = node_min.Z; z <= node_max.Z; z++)
642 for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
646 u16 depth_water_top = 0;
647 u16 depth_riverbed = 0;
648 u32 vi = vm->m_area.index(x, node_max.Y, z);
650 // Check node at base of mapchunk above, either a node of a previously
651 // generated mapchunk or if not, a node of overgenerated base terrain.
652 content_t c_above = vm->m_data[vi + em.X].getContent();
653 bool air_above = c_above == CONTENT_AIR;
654 bool river_water_above = c_above == c_river_water_source;
655 bool water_above = c_above == c_water_source || river_water_above;
657 biomemap[index] = BIOME_NONE;
659 // If there is air or water above enable top/filler placement, otherwise force
660 // nplaced to stone level by setting a number exceeding any possible filler depth.
661 u16 nplaced = (air_above || water_above) ? 0 : U16_MAX;
663 for (s16 y = node_max.Y; y >= node_min.Y; y--) {
664 content_t c = vm->m_data[vi].getContent();
666 // Biome is recalculated each time an upper surface is detected while
667 // working down a column. The selected biome then remains in effect for
668 // all nodes below until the next surface and biome recalculation.
669 // Biome is recalculated:
670 // 1. At the surface of stone below air or water.
671 // 2. At the surface of water below air.
672 // 3. When stone or water is detected but biome has not yet been calculated.
673 bool is_stone_surface = (c == c_stone) &&
674 (air_above || water_above || !biome);
676 bool is_water_surface =
677 (c == c_water_source || c == c_river_water_source) &&
678 (air_above || !biome);
680 if (is_stone_surface || is_water_surface) {
681 biome = biomegen->getBiomeAtIndex(index, y);
683 if (biomemap[index] == BIOME_NONE && is_stone_surface)
684 biomemap[index] = biome->index;
686 depth_top = biome->depth_top;
687 base_filler = MYMAX(depth_top +
688 biome->depth_filler +
689 noise_filler_depth->result[index], 0.f);
690 depth_water_top = biome->depth_water_top;
691 depth_riverbed = biome->depth_riverbed;
693 // Detect stone type for dungeons during every biome calculation.
694 // This is more efficient than detecting per-node and will not
695 // miss any desert stone or sandstone biomes.
696 if (biome->c_stone == c_desert_stone)
697 stone_type = MGSTONE_DESERT_STONE;
698 else if (biome->c_stone == c_sandstone)
699 stone_type = MGSTONE_SANDSTONE;
703 content_t c_below = vm->m_data[vi - em.X].getContent();
705 // If the node below isn't solid, make this node stone, so that
706 // any top/filler nodes above are structurally supported.
707 // This is done by aborting the cycle of top/filler placement
708 // immediately by forcing nplaced to stone level.
709 if (c_below == CONTENT_AIR
710 || c_below == c_water_source
711 || c_below == c_river_water_source)
714 if (river_water_above) {
715 if (nplaced < depth_riverbed) {
716 vm->m_data[vi] = MapNode(biome->c_riverbed);
719 nplaced = U16_MAX; // Disable top/filler placement
720 river_water_above = false;
722 } else if (nplaced < depth_top) {
723 vm->m_data[vi] = MapNode(biome->c_top);
725 } else if (nplaced < base_filler) {
726 vm->m_data[vi] = MapNode(biome->c_filler);
729 vm->m_data[vi] = MapNode(biome->c_stone);
734 } else if (c == c_water_source) {
735 vm->m_data[vi] = MapNode((y > (s32)(water_level - depth_water_top))
736 ? biome->c_water_top : biome->c_water);
737 nplaced = 0; // Enable top/filler placement for next surface
740 } else if (c == c_river_water_source) {
741 vm->m_data[vi] = MapNode(biome->c_river_water);
742 nplaced = 0; // Enable riverbed placement for next surface
745 river_water_above = true;
746 } else if (c == CONTENT_AIR) {
747 nplaced = 0; // Enable top/filler placement for next surface
750 } else { // Possible various nodes overgenerated from neighbouring mapchunks
751 nplaced = U16_MAX; // Disable top/filler placement
756 vm->m_area.add_y(em, vi, -1);
764 void MapgenBasic::dustTopNodes()
766 if (node_max.Y < water_level)
769 v3s16 em = vm->m_area.getExtent();
772 for (s16 z = node_min.Z; z <= node_max.Z; z++)
773 for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
774 Biome *biome = (Biome *)m_bmgr->getRaw(biomemap[index]);
776 if (biome->c_dust == CONTENT_IGNORE)
779 u32 vi = vm->m_area.index(x, full_node_max.Y, z);
780 content_t c_full_max = vm->m_data[vi].getContent();
783 if (c_full_max == CONTENT_AIR) {
784 y_start = full_node_max.Y - 1;
785 } else if (c_full_max == CONTENT_IGNORE) {
786 vi = vm->m_area.index(x, node_max.Y + 1, z);
787 content_t c_max = vm->m_data[vi].getContent();
789 if (c_max == CONTENT_AIR)
790 y_start = node_max.Y;
797 vi = vm->m_area.index(x, y_start, z);
798 for (s16 y = y_start; y >= node_min.Y - 1; y--) {
799 if (vm->m_data[vi].getContent() != CONTENT_AIR)
802 vm->m_area.add_y(em, vi, -1);
805 content_t c = vm->m_data[vi].getContent();
806 if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE && c != biome->c_dust) {
807 vm->m_area.add_y(em, vi, 1);
808 vm->m_data[vi] = MapNode(biome->c_dust);
814 void MapgenBasic::generateCaves(s16 max_stone_y, s16 large_cave_depth)
816 if (max_stone_y < node_min.Y)
819 CavesNoiseIntersection caves_noise(ndef, m_bmgr, csize,
820 &np_cave1, &np_cave2, seed, cave_width);
822 caves_noise.generateCaves(vm, node_min, node_max, biomemap);
824 if (node_max.Y > large_cave_depth)
827 PseudoRandom ps(blockseed + 21343);
828 u32 bruises_count = ps.range(0, 2);
829 for (u32 i = 0; i < bruises_count; i++) {
830 CavesRandomWalk cave(ndef, &gennotify, seed, water_level,
831 c_water_source, CONTENT_IGNORE);
833 cave.makeCave(vm, node_min, node_max, &ps, true, max_stone_y, heightmap);
838 void MapgenBasic::generateDungeons(s16 max_stone_y, MgStoneType stone_type)
840 if (max_stone_y < node_min.Y)
846 dp.c_water = c_water_source;
847 dp.c_river_water = c_river_water_source;
850 dp.y_min = -MAX_MAP_GENERATION_LIMIT;
851 dp.y_max = MAX_MAP_GENERATION_LIMIT;
852 dp.np_density = nparams_dungeon_density;
853 dp.np_alt_wall = nparams_dungeon_alt_wall;
855 switch (stone_type) {
858 dp.c_wall = c_cobble;
859 dp.c_alt_wall = c_mossycobble;
860 dp.c_stair = c_stair_cobble;
862 dp.diagonal_dirs = false;
863 dp.holesize = v3s16(1, 2, 1);
864 dp.roomsize = v3s16(0, 0, 0);
865 dp.notifytype = GENNOTIFY_DUNGEON;
867 case MGSTONE_DESERT_STONE:
868 dp.c_wall = c_desert_stone;
869 dp.c_alt_wall = CONTENT_IGNORE;
870 dp.c_stair = c_desert_stone;
872 dp.diagonal_dirs = true;
873 dp.holesize = v3s16(2, 3, 2);
874 dp.roomsize = v3s16(2, 5, 2);
875 dp.notifytype = GENNOTIFY_TEMPLE;
877 case MGSTONE_SANDSTONE:
878 dp.c_wall = c_sandstonebrick;
879 dp.c_alt_wall = CONTENT_IGNORE;
880 dp.c_stair = c_sandstonebrick;
882 dp.diagonal_dirs = false;
883 dp.holesize = v3s16(2, 2, 2);
884 dp.roomsize = v3s16(2, 0, 2);
885 dp.notifytype = GENNOTIFY_DUNGEON;
889 DungeonGen dgen(ndef, &gennotify, &dp);
890 dgen.generate(vm, blockseed, full_node_min, full_node_max);
895 //// GenerateNotifier
898 GenerateNotifier::GenerateNotifier()
904 GenerateNotifier::GenerateNotifier(u32 notify_on,
905 std::set<u32> *notify_on_deco_ids)
907 m_notify_on = notify_on;
908 m_notify_on_deco_ids = notify_on_deco_ids;
912 void GenerateNotifier::setNotifyOn(u32 notify_on)
914 m_notify_on = notify_on;
918 void GenerateNotifier::setNotifyOnDecoIds(std::set<u32> *notify_on_deco_ids)
920 m_notify_on_deco_ids = notify_on_deco_ids;
924 bool GenerateNotifier::addEvent(GenNotifyType type, v3s16 pos, u32 id)
926 if (!(m_notify_on & (1 << type)))
929 if (type == GENNOTIFY_DECORATION &&
930 m_notify_on_deco_ids->find(id) == m_notify_on_deco_ids->end())
937 m_notify_events.push_back(gne);
943 void GenerateNotifier::getEvents(
944 std::map<std::string, std::vector<v3s16> > &event_map,
947 std::list<GenNotifyEvent>::iterator it;
949 for (it = m_notify_events.begin(); it != m_notify_events.end(); ++it) {
950 GenNotifyEvent &gn = *it;
951 std::string name = (gn.type == GENNOTIFY_DECORATION) ?
952 "decoration#"+ itos(gn.id) :
953 flagdesc_gennotify[gn.type].name;
955 event_map[name].push_back(gn.pos);
959 m_notify_events.clear();
968 MapgenParams::~MapgenParams()
974 void MapgenParams::readParams(const Settings *settings)
976 std::string seed_str;
977 const char *seed_name = (settings == g_settings) ? "fixed_map_seed" : "seed";
979 if (settings->getNoEx(seed_name, seed_str)) {
980 if (!seed_str.empty())
981 seed = read_seed(seed_str.c_str());
983 myrand_bytes(&seed, sizeof(seed));
987 if (settings->getNoEx("mg_name", mg_name))
988 this->mgtype = Mapgen::getMapgenType(mg_name);
990 settings->getS16NoEx("water_level", water_level);
991 settings->getS16NoEx("chunksize", chunksize);
992 settings->getFlagStrNoEx("mg_flags", flags, flagdesc_mapgen);
995 bparams = BiomeManager::createBiomeParams(BIOMEGEN_ORIGINAL);
997 bparams->readParams(settings);
998 bparams->seed = seed;
1003 void MapgenParams::writeParams(Settings *settings) const
1005 settings->set("mg_name", Mapgen::getMapgenName(mgtype));
1006 settings->setU64("seed", seed);
1007 settings->setS16("water_level", water_level);
1008 settings->setS16("chunksize", chunksize);
1009 settings->setFlagStr("mg_flags", flags, flagdesc_mapgen, U32_MAX);
1012 bparams->writeParams(settings);