3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser 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.
27 //#include "serverobject.h"
28 #include "content_sao.h"
30 #include "content_mapnode.h" // For content_mapnode_get_new_name
31 #include "voxelalgorithms.h"
33 #include "settings.h" // For g_settings
34 #include "main.h" // For g_profiler
36 #include "mapgen_v6.h"
37 #include "mapgen_v7.h"
38 #include "util/serialize.h"
40 FlagDesc flagdesc_mapgen[] = {
43 {"dungeons", MG_DUNGEONS},
44 {"v6_jungles", MGV6_JUNGLES},
45 {"v6_biome_blend", MGV6_BIOME_BLEND},
50 FlagDesc flagdesc_ore[] = {
51 {"absheight", OREFLAG_ABSHEIGHT},
52 {"scatter_noisedensity", OREFLAG_DENSITY},
53 {"claylike_nodeisnt", OREFLAG_NODEISNT},
57 FlagDesc flagdesc_deco_schematic[] = {
58 {"place_center_x", DECO_PLACE_CENTER_X},
59 {"place_center_y", DECO_PLACE_CENTER_Y},
60 {"place_center_z", DECO_PLACE_CENTER_Z},
64 ///////////////////////////////////////////////////////////////////////////////
67 Ore *createOre(OreType type) {
70 return new OreScatter;
73 //case ORE_CLAYLIKE: //TODO: implement this!
74 // return new OreClaylike;
87 void Ore::resolveNodeNames(INodeDefManager *ndef) {
88 if (ore == CONTENT_IGNORE) {
89 ore = ndef->getId(ore_name);
90 if (ore == CONTENT_IGNORE) {
91 errorstream << "Ore::resolveNodeNames: ore node '"
92 << ore_name << "' not defined";
94 wherein = CONTENT_AIR;
98 if (wherein == CONTENT_IGNORE) {
99 wherein = ndef->getId(wherein_name);
100 if (wherein == CONTENT_IGNORE) {
101 errorstream << "Ore::resolveNodeNames: wherein node '"
102 << wherein_name << "' not defined";
104 wherein = CONTENT_AIR;
110 void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
113 in_range |= (nmin.Y <= height_max && nmax.Y >= height_min);
114 if (flags & OREFLAG_ABSHEIGHT)
115 in_range |= (nmin.Y >= -height_max && nmax.Y <= -height_min) << 1;
120 if (in_range & ORE_RANGE_MIRROR) {
121 ymin = MYMAX(nmin.Y, -height_max);
122 ymax = MYMIN(nmax.Y, -height_min);
124 ymin = MYMAX(nmin.Y, height_min);
125 ymax = MYMIN(nmax.Y, height_max);
127 if (clust_size >= ymax - ymin + 1)
132 generate(mg->vm, mg->seed, blockseed, nmin, nmax);
136 void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
137 u32 blockseed, v3s16 nmin, v3s16 nmax) {
138 PseudoRandom pr(blockseed);
139 MapNode n_ore(ore, 0, ore_param2);
141 int volume = (nmax.X - nmin.X + 1) *
142 (nmax.Y - nmin.Y + 1) *
143 (nmax.Z - nmin.Z + 1);
144 int csize = clust_size;
145 int orechance = (csize * csize * csize) / clust_num_ores;
146 int nclusters = volume / clust_scarcity;
148 for (int i = 0; i != nclusters; i++) {
149 int x0 = pr.range(nmin.X, nmax.X - csize + 1);
150 int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
151 int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
153 if (np && (NoisePerlin3D(np, x0, y0, z0, seed) < nthresh))
156 for (int z1 = 0; z1 != csize; z1++)
157 for (int y1 = 0; y1 != csize; y1++)
158 for (int x1 = 0; x1 != csize; x1++) {
159 if (pr.range(1, orechance) != 1)
162 u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
163 if (vm->m_data[i].getContent() == wherein)
164 vm->m_data[i] = n_ore;
170 void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
171 u32 blockseed, v3s16 nmin, v3s16 nmax) {
172 PseudoRandom pr(blockseed + 4234);
173 MapNode n_ore(ore, 0, ore_param2);
175 int max_height = clust_size;
176 int y_start = pr.range(nmin.Y, nmax.Y - max_height);
179 int sx = nmax.X - nmin.X + 1;
180 int sz = nmax.Z - nmin.Z + 1;
181 noise = new Noise(np, 0, sx, sz);
183 noise->seed = seed + y_start;
184 noise->perlinMap2D(nmin.X, nmin.Z);
187 for (int z = nmin.Z; z <= nmax.Z; z++)
188 for (int x = nmin.X; x <= nmax.X; x++) {
189 float noiseval = noise->result[index++];
190 if (noiseval < nthresh)
193 int height = max_height * (1. / pr.range(1, 3));
194 int y0 = y_start + np->scale * noiseval; //pr.range(1, 3) - 1;
195 int y1 = y0 + height;
196 for (int y = y0; y != y1; y++) {
197 u32 i = vm->m_area.index(x, y, z);
198 if (!vm->m_area.contains(i))
201 if (vm->m_data[i].getContent() == wherein)
202 vm->m_data[i] = n_ore;
208 ///////////////////////////////////////////////////////////////////////////////
211 Decoration *createDecoration(DecorationType type) {
214 return new DecoSimple;
216 return new DecoSchematic;
218 // return new DecoLSystem;
225 Decoration::Decoration() {
233 Decoration::~Decoration() {
238 void Decoration::resolveNodeNames(INodeDefManager *ndef) {
239 if (c_place_on == CONTENT_IGNORE)
240 c_place_on = ndef->getId(place_on_name);
244 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
245 PseudoRandom ps(blockseed + 53);
246 int carea_size = nmax.X - nmin.X + 1;
248 // Divide area into parts
249 if (carea_size % sidelen) {
250 errorstream << "Decoration::placeDeco: chunk size is not divisible by "
251 "sidelen; setting sidelen to " << carea_size << std::endl;
252 sidelen = carea_size;
255 s16 divlen = carea_size / sidelen;
256 int area = sidelen * sidelen;
258 for (s16 z0 = 0; z0 < divlen; z0++)
259 for (s16 x0 = 0; x0 < divlen; x0++) {
260 v2s16 p2d_center( // Center position of part of division
261 nmin.X + sidelen / 2 + sidelen * x0,
262 nmin.Z + sidelen / 2 + sidelen * z0
264 v2s16 p2d_min( // Minimum edge of part of division
265 nmin.X + sidelen * x0,
266 nmin.Z + sidelen * z0
268 v2s16 p2d_max( // Maximum edge of part of division
269 nmin.X + sidelen + sidelen * x0 - 1,
270 nmin.Z + sidelen + sidelen * z0 - 1
273 // Amount of decorations
275 NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
277 u32 deco_count = area * MYMAX(nval, 0.f);
279 for (u32 i = 0; i < deco_count; i++) {
280 s16 x = ps.range(p2d_min.X, p2d_max.X);
281 s16 z = ps.range(p2d_min.Y, p2d_max.Y);
283 int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
285 s16 y = mg->heightmap ?
286 mg->heightmap[mapindex] :
287 mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
289 if (y < nmin.Y || y > nmax.Y)
292 int height = getHeight();
293 int max_y = nmax.Y + MAP_BLOCKSIZE;
294 if (y + 1 + height > max_y) {
297 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
299 JMutexAutoLock cutofflock(cutoff_mutex);
300 cutoffs.push_back(CutoffData(x, y, z, height));
305 std::set<u8>::iterator iter;
308 iter = biomes.find(mg->biomemap[mapindex]);
309 if (iter == biomes.end())
314 generate(mg, &ps, max_y, v3s16(x, y, z));
321 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
322 PseudoRandom pr(blockseed + 53);
323 std::vector<CutoffData> handled_cutoffs;
325 // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
327 JMutexAutoLock cutofflock(cutoff_mutex);
328 for (std::list<CutoffData>::iterator i = cutoffs.begin();
329 i != cutoffs.end(); ++i) {
330 CutoffData cutoff = *i;
332 s16 height = cutoff.height;
333 if (p.X < nmin.X || p.X > nmax.X ||
334 p.Z < nmin.Z || p.Z > nmax.Z)
336 if (p.Y + height < nmin.Y || p.Y > nmax.Y)
339 handled_cutoffs.push_back(cutoff);
343 // Generate the cutoffs
344 for (size_t i = 0; i != handled_cutoffs.size(); i++) {
345 v3s16 p = handled_cutoffs[i].p;
346 s16 height = handled_cutoffs[i].height;
348 if (p.Y + height > nmax.Y) {
349 //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
350 cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
353 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
356 // Remove cutoffs that were handled from the cutoff list
358 JMutexAutoLock cutofflock(cutoff_mutex);
359 for (std::list<CutoffData>::iterator i = cutoffs.begin();
360 i != cutoffs.end(); ++i) {
362 for (size_t j = 0; j != handled_cutoffs.size(); j++) {
363 CutoffData coff = *i;
364 if (coff.p == handled_cutoffs[j].p)
365 i = cutoffs.erase(i);
373 ///////////////////////////////////////////////////////////////////////////////
376 void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
377 Decoration::resolveNodeNames(ndef);
379 if (c_deco == CONTENT_IGNORE) {
380 c_deco = ndef->getId(deco_name);
381 if (c_deco == CONTENT_IGNORE) {
382 errorstream << "DecoSimple::resolveNodeNames: decoration node '"
383 << deco_name << "' not defined" << std::endl;
384 c_deco = CONTENT_AIR;
387 if (c_spawnby == CONTENT_IGNORE) {
388 c_spawnby = ndef->getId(spawnby_name);
389 if (c_spawnby == CONTENT_IGNORE) {
390 errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
391 << deco_name << "' not defined" << std::endl;
393 c_spawnby = CONTENT_AIR;
397 if (c_decolist.size())
400 for (size_t i = 0; i != decolist_names.size(); i++) {
401 content_t c = ndef->getId(decolist_names[i]);
402 if (c == CONTENT_IGNORE) {
403 errorstream << "DecoSimple::resolveNodeNames: decolist node '"
404 << decolist_names[i] << "' not defined" << std::endl;
407 c_decolist.push_back(c);
412 void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
413 ManualMapVoxelManipulator *vm = mg->vm;
415 u32 vi = vm->m_area.index(p);
416 if (vm->m_data[vi].getContent() != c_place_on &&
417 c_place_on != CONTENT_IGNORE)
420 if (nspawnby != -1) {
422 v3s16 dirs[8] = { // a Moore neighborhood
433 for (int i = 0; i != 8; i++) {
434 u32 index = vm->m_area.index(p + dirs[i]);
435 if (vm->m_area.contains(index) &&
436 vm->m_data[index].getContent() == c_spawnby)
440 if (nneighs < nspawnby)
444 size_t ndecos = c_decolist.size();
445 content_t c_place = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
447 s16 height = (deco_height_max > 0) ?
448 pr->range(deco_height, deco_height_max) : deco_height;
450 height = MYMIN(height, max_y - p.Y);
452 v3s16 em = vm->m_area.getExtent();
453 for (int i = 0; i < height; i++) {
454 vm->m_area.add_y(em, vi, 1);
456 content_t c = vm->m_data[vi].getContent();
457 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
460 vm->m_data[vi] = MapNode(c_place);
465 int DecoSimple::getHeight() {
466 return (deco_height_max > 0) ? deco_height_max : deco_height;
470 std::string DecoSimple::getName() {
475 ///////////////////////////////////////////////////////////////////////////////
478 DecoSchematic::DecoSchematic() {
482 size = v3s16(0, 0, 0);
486 DecoSchematic::~DecoSchematic() {
492 void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
493 Decoration::resolveNodeNames(ndef);
495 if (filename.empty())
499 errorstream << "DecoSchematic::resolveNodeNames: node name list was "
500 "not created" << std::endl;
504 for (size_t i = 0; i != node_names->size(); i++) {
505 content_t c = ndef->getId(node_names->at(i));
506 if (c == CONTENT_IGNORE) {
507 errorstream << "DecoSchematic::resolveNodeNames: node '"
508 << node_names->at(i) << "' not defined" << std::endl;
511 c_nodes.push_back(c);
514 for (int i = 0; i != size.X * size.Y * size.Z; i++)
515 schematic[i].setContent(c_nodes[schematic[i].getContent()]);
522 void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
523 ManualMapVoxelManipulator *vm = mg->vm;
525 if (flags & DECO_PLACE_CENTER_X)
526 p.X -= (size.X + 1) / 2;
527 if (flags & DECO_PLACE_CENTER_Y)
528 p.Y -= (size.Y + 1) / 2;
529 if (flags & DECO_PLACE_CENTER_Z)
530 p.Z -= (size.Z + 1) / 2;
532 u32 vi = vm->m_area.index(p);
533 if (vm->m_data[vi].getContent() != c_place_on &&
534 c_place_on != CONTENT_IGNORE)
538 for (s16 z = 0; z != size.Z; z++)
539 for (s16 y = 0; y != size.Y; y++) {
540 vi = vm->m_area.index(p.X, p.Y + y, p.Z + z);
541 for (s16 x = 0; x != size.X; x++, i++, vi++) {
542 if (!vm->m_area.contains(vi))
545 content_t c = vm->m_data[vi].getContent();
546 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
549 if (schematic[i].param1 && myrand_range(1, 256) > schematic[i].param1)
552 vm->m_data[vi] = schematic[i];
553 vm->m_data[vi].param1 = 0;
559 int DecoSchematic::getHeight() {
564 std::string DecoSchematic::getName() {
569 void DecoSchematic::placeStructure(Map *map, v3s16 p) {
570 assert(schematic != NULL);
571 ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
573 if (flags & DECO_PLACE_CENTER_X)
574 p.X -= (size.X + 1) / 2;
575 if (flags & DECO_PLACE_CENTER_Y)
576 p.Y -= (size.Y + 1) / 2;
577 if (flags & DECO_PLACE_CENTER_Z)
578 p.Z -= (size.Z + 1) / 2;
580 v3s16 bp1 = getNodeBlockPos(p);
581 v3s16 bp2 = getNodeBlockPos(p + size - v3s16(1,1,1));
582 vm->initialEmerge(bp1, bp2);
585 for (s16 z = 0; z != size.Z; z++)
586 for (s16 y = 0; y != size.Y; y++) {
587 u32 vi = vm->m_area.index(p.X, p.Y + y, p.Z + z);
588 for (s16 x = 0; x != size.X; x++, i++, vi++) {
589 if (!vm->m_area.contains(vi))
591 if (schematic[i].param1 && myrand_range(1, 256) > schematic[i].param1)
594 vm->m_data[vi] = schematic[i];
595 vm->m_data[vi].param1 = 0;
599 std::map<v3s16, MapBlock *> lighting_modified_blocks;
600 std::map<v3s16, MapBlock *> modified_blocks;
601 vm->blitBackAll(&modified_blocks);
603 // TODO: Optimize this by using Mapgen::calcLighting() instead
604 lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
605 map->updateLighting(lighting_modified_blocks, modified_blocks);
608 event.type = MEET_OTHER;
609 for (std::map<v3s16, MapBlock *>::iterator
610 it = modified_blocks.begin();
611 it != modified_blocks.end(); ++it)
612 event.modified_blocks.insert(it->first);
614 map->dispatchEvent(&event);
618 bool DecoSchematic::loadSchematicFile() {
619 std::ifstream is(filename.c_str(), std::ios_base::binary);
621 u32 signature = readU32(is);
622 if (signature != 'MTSM') {
623 errorstream << "loadSchematicFile: invalid schematic "
628 u16 version = readU16(is);
630 errorstream << "loadSchematicFile: unsupported schematic "
631 "file version" << std::endl;
635 size = readV3S16(is);
636 int nodecount = size.X * size.Y * size.Z;
638 u16 nidmapcount = readU16(is);
640 node_names = new std::vector<std::string>;
641 for (int i = 0; i != nidmapcount; i++) {
642 std::string name = deSerializeString(is);
643 node_names->push_back(name);
647 schematic = new MapNode[nodecount];
648 MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST, schematic,
649 nodecount, 2, 2, true);
656 Minetest Schematic File Format
658 All values are stored in big-endian byte order.
659 [u32] signature: 'MTSM'
664 [Name-ID table] Name ID Mapping Table
666 For each name-id mapping:
670 For each node in schematic: (for z, y, x)
672 For each node in schematic:
673 [u8] probability of occurance (param1)
674 For each node in schematic:
678 void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
679 std::ofstream os(filename.c_str(), std::ios_base::binary);
681 writeU32(os, 'MTSM'); // signature
682 writeU16(os, 1); // version
683 writeV3S16(os, size); // schematic size
685 std::vector<content_t> usednodes;
686 int nodecount = size.X * size.Y * size.Z;
687 build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
689 u16 numids = usednodes.size();
690 writeU16(os, numids); // name count
691 for (int i = 0; i != numids; i++)
692 os << serializeString(ndef->get(usednodes[i]).name); // node names
694 // compressed bulk node data
695 MapNode::serializeBulk(os, SER_FMT_VER_HIGHEST, schematic,
696 nodecount, 2, 2, true);
700 void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
701 std::vector<content_t> *usednodes) {
702 std::map<content_t, content_t> nodeidmap;
703 content_t numids = 0;
705 for (u32 i = 0; i != nodecount; i++) {
707 content_t c = nodes[i].getContent();
709 std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
710 if (it == nodeidmap.end()) {
714 usednodes->push_back(c);
715 nodeidmap.insert(std::make_pair(c, id));
719 nodes[i].setContent(id);
724 bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
725 ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
727 v3s16 bp1 = getNodeBlockPos(p1);
728 v3s16 bp2 = getNodeBlockPos(p2);
729 vm->initialEmerge(bp1, bp2);
732 schematic = new MapNode[size.X * size.Y * size.Z];
735 for (s16 z = p1.Z; z <= p2.Z; z++)
736 for (s16 y = p1.Y; y <= p2.Y; y++) {
737 u32 vi = vm->m_area.index(p1.X, y, z);
738 for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
739 schematic[i] = vm->m_data[vi];
740 schematic[i].param1 = 0;
749 void DecoSchematic::applyProbabilities(std::vector<std::pair<v3s16, u8> > *plist, v3s16 p0) {
750 for (size_t i = 0; i != plist->size(); i++) {
751 v3s16 p = (*plist)[i].first - p0;
752 int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
753 if (index < size.Z * size.Y * size.X)
754 schematic[index].param1 = (*plist)[i].second;
759 ///////////////////////////////////////////////////////////////////////////////
774 // Returns Y one under area minimum if not found
775 s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
776 v3s16 em = vm->m_area.getExtent();
777 s16 y_nodes_max = vm->m_area.MaxEdge.Y;
778 s16 y_nodes_min = vm->m_area.MinEdge.Y;
779 u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
782 for (y = y_nodes_max; y >= y_nodes_min; y--) {
783 MapNode &n = vm->m_data[i];
784 if (ndef->get(n).walkable)
787 vm->m_area.add_y(em, i, -1);
789 return (y >= y_nodes_min) ? y : y_nodes_min - 1;
793 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
794 v3s16 em = vm->m_area.getExtent();
795 u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
798 for (y = ymax; y >= ymin; y--) {
799 MapNode &n = vm->m_data[i];
800 if (ndef->get(n).walkable)
803 vm->m_area.add_y(em, i, -1);
809 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
813 //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
815 for (s16 z = nmin.Z; z <= nmax.Z; z++) {
816 for (s16 x = nmin.X; x <= nmax.X; x++) {
817 s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
818 heightmap[index++] = y;
821 //printf("updateHeightmap: %dus\n", t.stop());
825 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
826 bool isliquid, wasliquid;
827 v3s16 em = vm->m_area.getExtent();
829 for (s16 z = nmin.Z; z <= nmax.Z; z++) {
830 for (s16 x = nmin.X; x <= nmax.X; x++) {
833 u32 i = vm->m_area.index(x, nmax.Y, z);
834 for (s16 y = nmax.Y; y >= nmin.Y; y--) {
835 isliquid = ndef->get(vm->m_data[i]).isLiquid();
837 // there was a change between liquid and nonliquid, add to queue
838 if (isliquid != wasliquid)
839 trans_liquid->push_back(v3s16(x, y, z));
841 wasliquid = isliquid;
842 vm->m_area.add_y(em, i, -1);
849 void Mapgen::setLighting(v3s16 nmin, v3s16 nmax, u8 light) {
850 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
851 VoxelArea a(nmin, nmax);
853 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
854 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
855 u32 i = vm->m_area.index(a.MinEdge.X, y, z);
856 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
857 vm->m_data[i].param1 = light;
863 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
864 if (light <= 1 || !a.contains(p))
867 u32 vi = vm->m_area.index(p);
868 MapNode &nn = vm->m_data[vi];
871 // should probably compare masked, but doesn't seem to make a difference
872 if (light <= nn.param1 || !ndef->get(nn).light_propagates)
877 lightSpread(a, p + v3s16(0, 0, 1), light);
878 lightSpread(a, p + v3s16(0, 1, 0), light);
879 lightSpread(a, p + v3s16(1, 0, 0), light);
880 lightSpread(a, p - v3s16(0, 0, 1), light);
881 lightSpread(a, p - v3s16(0, 1, 0), light);
882 lightSpread(a, p - v3s16(1, 0, 0), light);
886 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
887 VoxelArea a(nmin, nmax);
888 bool block_is_underground = (water_level >= nmax.Y);
890 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
891 //TimeTaker t("updateLighting");
893 // first, send vertical rays of sunshine downward
894 v3s16 em = vm->m_area.getExtent();
895 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
896 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
897 // see if we can get a light value from the overtop
898 u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
899 if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
900 if (block_is_underground)
902 } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN) {
905 vm->m_area.add_y(em, i, -1);
907 for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
908 MapNode &n = vm->m_data[i];
909 if (!ndef->get(n).sunlight_propagates)
911 n.param1 = LIGHT_SUN;
912 vm->m_area.add_y(em, i, -1);
917 // now spread the sunlight and light up any sources
918 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
919 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
920 u32 i = vm->m_area.index(a.MinEdge.X, y, z);
921 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
922 MapNode &n = vm->m_data[i];
923 if (n.getContent() == CONTENT_IGNORE ||
924 !ndef->get(n).light_propagates)
927 u8 light_produced = ndef->get(n).light_source & 0x0F;
929 n.param1 = light_produced;
931 u8 light = n.param1 & 0x0F;
933 lightSpread(a, v3s16(x, y, z + 1), light);
934 lightSpread(a, v3s16(x, y + 1, z ), light);
935 lightSpread(a, v3s16(x + 1, y, z ), light);
936 lightSpread(a, v3s16(x, y, z - 1), light);
937 lightSpread(a, v3s16(x, y - 1, z ), light);
938 lightSpread(a, v3s16(x - 1, y, z ), light);
944 //printf("updateLighting: %dms\n", t.stop());
948 void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
949 enum LightBank banks[2] = {LIGHTBANK_DAY, LIGHTBANK_NIGHT};
950 VoxelArea a(nmin, nmax);
951 bool block_is_underground = (water_level > nmax.Y);
952 bool sunlight = !block_is_underground;
954 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
956 for (int i = 0; i < 2; i++) {
957 enum LightBank bank = banks[i];
958 std::set<v3s16> light_sources;
959 std::map<v3s16, u8> unlight_from;
961 voxalgo::clearLightAndCollectSources(*vm, a, bank, ndef,
962 light_sources, unlight_from);
963 voxalgo::propagateSunlight(*vm, a, sunlight, light_sources, ndef);
965 vm->unspreadLight(bank, unlight_from, light_sources, ndef);
966 vm->spreadLight(bank, light_sources, ndef);
971 //////////////////////// Mapgen V6 parameter read/write
973 bool MapgenV6Params::readParams(Settings *settings) {
974 freq_desert = settings->getFloat("mgv6_freq_desert");
975 freq_beach = settings->getFloat("mgv6_freq_beach");
978 settings->getNoiseParams("mgv6_np_terrain_base", np_terrain_base) &&
979 settings->getNoiseParams("mgv6_np_terrain_higher", np_terrain_higher) &&
980 settings->getNoiseParams("mgv6_np_steepness", np_steepness) &&
981 settings->getNoiseParams("mgv6_np_height_select", np_height_select) &&
982 settings->getNoiseParams("mgv6_np_mud", np_mud) &&
983 settings->getNoiseParams("mgv6_np_beach", np_beach) &&
984 settings->getNoiseParams("mgv6_np_biome", np_biome) &&
985 settings->getNoiseParams("mgv6_np_cave", np_cave) &&
986 settings->getNoiseParams("mgv6_np_humidity", np_humidity) &&
987 settings->getNoiseParams("mgv6_np_trees", np_trees) &&
988 settings->getNoiseParams("mgv6_np_apple_trees", np_apple_trees);
993 void MapgenV6Params::writeParams(Settings *settings) {
994 settings->setFloat("mgv6_freq_desert", freq_desert);
995 settings->setFloat("mgv6_freq_beach", freq_beach);
997 settings->setNoiseParams("mgv6_np_terrain_base", np_terrain_base);
998 settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
999 settings->setNoiseParams("mgv6_np_steepness", np_steepness);
1000 settings->setNoiseParams("mgv6_np_height_select", np_height_select);
1001 settings->setNoiseParams("mgv6_np_mud", np_mud);
1002 settings->setNoiseParams("mgv6_np_beach", np_beach);
1003 settings->setNoiseParams("mgv6_np_biome", np_biome);
1004 settings->setNoiseParams("mgv6_np_cave", np_cave);
1005 settings->setNoiseParams("mgv6_np_humidity", np_humidity);
1006 settings->setNoiseParams("mgv6_np_trees", np_trees);
1007 settings->setNoiseParams("mgv6_np_apple_trees", np_apple_trees);
1011 bool MapgenV7Params::readParams(Settings *settings) {
1013 settings->getNoiseParams("mgv7_np_terrain_base", np_terrain_base) &&
1014 settings->getNoiseParams("mgv7_np_terrain_alt", np_terrain_alt) &&
1015 settings->getNoiseParams("mgv7_np_terrain_mod", np_terrain_mod) &&
1016 settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
1017 settings->getNoiseParams("mgv7_np_height_select", np_height_select) &&
1018 settings->getNoiseParams("mgv7_np_ridge", np_ridge);
1023 void MapgenV7Params::writeParams(Settings *settings) {
1024 settings->setNoiseParams("mgv7_np_terrain_base", np_terrain_base);
1025 settings->setNoiseParams("mgv7_np_terrain_alt", np_terrain_alt);
1026 settings->setNoiseParams("mgv7_np_terrain_mod", np_terrain_mod);
1027 settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
1028 settings->setNoiseParams("mgv7_np_height_select", np_height_select);
1029 settings->setNoiseParams("mgv7_np_ridge", np_ridge);
1033 /////////////////////////////////// legacy static functions for farmesh
1035 s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
1036 //just need to return something
1042 bool Mapgen::get_have_beach(u64 seed, v2s16 p2d) {
1043 double sandnoise = noise2d_perlin(
1044 0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
1045 seed+59420, 3, 0.50);
1047 return (sandnoise > 0.15);
1051 double Mapgen::tree_amount_2d(u64 seed, v2s16 p) {
1052 double noise = noise2d_perlin(
1053 0.5+(float)p.X/125, 0.5+(float)p.Y/125,
1055 double zeroval = -0.39;
1059 return 0.04 * (noise-zeroval) / (1.0-zeroval);