3 Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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 "content_sao.h"
29 #include "voxelalgorithms.h"
31 #include "settings.h" // For g_settings
32 #include "main.h" // For g_profiler
34 #include "dungeongen.h"
39 #include "mg_decoration.h"
40 #include "mapgen_v5.h"
41 #include "util/directiontables.h"
44 FlagDesc flagdesc_mapgen_v5[] = {
45 {"blobs", MGV5_BLOBS},
50 MapgenV5::MapgenV5(int mapgenid, MapgenParams *params, EmergeManager *emerge_) {
51 this->generating = false;
53 this->emerge = emerge_;
54 this->bmgr = emerge->biomemgr;
56 this->seed = (int)params->seed;
57 this->water_level = params->water_level;
58 this->flags = params->flags;
59 this->gennotify = emerge->gennotify;
61 this->csize = v3s16(1, 1, 1) * params->chunksize * MAP_BLOCKSIZE;
63 // amount of elements to skip for the next index
64 // for noise/height/biome maps (not vmanip)
65 this->ystride = csize.X;
66 this->zstride = csize.X * csize.Y;
68 this->biomemap = new u8[csize.X * csize.Z];
69 this->heightmap = new s16[csize.X * csize.Z];
71 MapgenV5Params *sp = (MapgenV5Params *)params->sparams;
73 this->spflags = sp->spflags;
76 noise_filler_depth = new Noise(&sp->np_filler_depth, seed, csize.X, csize.Z);
77 noise_factor = new Noise(&sp->np_factor, seed, csize.X, csize.Z);
78 noise_height = new Noise(&sp->np_height, seed, csize.X, csize.Z);
81 noise_cave1 = new Noise(&sp->np_cave1, seed, csize.X, csize.Y, csize.Z);
82 noise_cave2 = new Noise(&sp->np_cave2, seed, csize.X, csize.Y, csize.Z);
83 noise_ground = new Noise(&sp->np_ground, seed, csize.X, csize.Y, csize.Z);
84 noise_crumble = new Noise(&sp->np_crumble, seed, csize.X, csize.Y, csize.Z);
85 noise_wetness = new Noise(&sp->np_wetness, seed, csize.X, csize.Y, csize.Z);
88 noise_heat = new Noise(bmgr->np_heat, seed, csize.X, csize.Z);
89 noise_humidity = new Noise(bmgr->np_humidity, seed, csize.X, csize.Z);
91 //// Resolve nodes to be used
92 INodeDefManager *ndef = emerge->ndef;
94 c_stone = ndef->getId("mapgen_stone");
95 c_dirt = ndef->getId("mapgen_dirt");
96 c_dirt_with_grass = ndef->getId("mapgen_dirt_with_grass");
97 c_sand = ndef->getId("mapgen_sand");
98 c_water_source = ndef->getId("mapgen_water_source");
99 c_lava_source = ndef->getId("mapgen_lava_source");
100 c_gravel = ndef->getId("mapgen_gravel");
101 c_cobble = ndef->getId("mapgen_cobble");
102 c_ice = ndef->getId("default:ice");
103 c_mossycobble = ndef->getId("mapgen_mossycobble");
104 c_sandbrick = ndef->getId("mapgen_sandstonebrick");
105 c_stair_cobble = ndef->getId("mapgen_stair_cobble");
106 c_stair_sandstone = ndef->getId("mapgen_stair_sandstone");
107 if (c_ice == CONTENT_IGNORE)
109 if (c_mossycobble == CONTENT_IGNORE)
110 c_mossycobble = c_cobble;
111 if (c_sandbrick == CONTENT_IGNORE)
112 c_sandbrick = c_desert_stone;
113 if (c_stair_cobble == CONTENT_IGNORE)
114 c_stair_cobble = c_cobble;
115 if (c_stair_sandstone == CONTENT_IGNORE)
116 c_stair_sandstone = c_sandbrick;
120 MapgenV5::~MapgenV5() {
121 delete noise_filler_depth;
127 delete noise_crumble;
128 delete noise_wetness;
131 delete noise_humidity;
138 MapgenV5Params::MapgenV5Params() {
139 spflags = MGV5_BLOBS;
141 np_filler_depth = NoiseParams(0, 1, v3f(150, 150, 150), 261, 4, 0.7);
142 np_factor = NoiseParams(0, 1, v3f(250, 250, 250), 920381, 3, 0.45);
143 np_height = NoiseParams(0, 10, v3f(250, 250, 250), 84174, 4, 0.5);
144 np_cave1 = NoiseParams(0, 6, v3f(50, 50, 50), 52534, 4, 0.5);
145 np_cave2 = NoiseParams(0, 6, v3f(50, 50, 50), 10325, 4, 0.5);
146 np_ground = NoiseParams(0, 40, v3f(80, 80, 80), 983240, 4, 0.55);
147 np_crumble = NoiseParams(0, 1, v3f(20, 20, 20), 34413, 3, 1.3);
148 np_wetness = NoiseParams(0, 1, v3f(40, 40, 40), 32474, 4, 1.1);
152 // Current caves noise scale default is 6 to compensate for new eased 3d noise amplitude
154 // Scaling the output of the noise function affects the overdrive of the
155 // contour function, which affects the shape of the output considerably.
157 //#define CAVE_NOISE_SCALE 12.0 < original default
158 //#define CAVE_NOISE_SCALE 10.0
159 //#define CAVE_NOISE_SCALE 7.5
160 //#define CAVE_NOISE_SCALE 5.0
161 //#define CAVE_NOISE_SCALE 1.0
163 //#define CAVE_NOISE_THRESHOLD (2.5/CAVE_NOISE_SCALE)
164 //#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE) < original and current code
167 void MapgenV5Params::readParams(Settings *settings) {
168 settings->getFlagStrNoEx("mgv5_spflags", spflags, flagdesc_mapgen_v5);
170 settings->getNoiseParams("mgv5_np_filler_depth", np_filler_depth);
171 settings->getNoiseParams("mgv5_np_factor", np_factor);
172 settings->getNoiseParams("mgv5_np_height", np_height);
173 settings->getNoiseParams("mgv5_np_cave1", np_cave1);
174 settings->getNoiseParams("mgv5_np_cave2", np_cave2);
175 settings->getNoiseParams("mgv5_np_ground", np_ground);
176 settings->getNoiseParams("mgv5_np_crumble", np_crumble);
177 settings->getNoiseParams("mgv5_np_wetness", np_wetness);
181 void MapgenV5Params::writeParams(Settings *settings) {
182 settings->setFlagStr("mgv5_spflags", spflags, flagdesc_mapgen_v5, (u32)-1);
184 settings->setNoiseParams("mgv5_np_filler_depth", np_filler_depth);
185 settings->setNoiseParams("mgv5_np_factor", np_factor);
186 settings->setNoiseParams("mgv5_np_height", np_height);
187 settings->setNoiseParams("mgv5_np_cave1", np_cave1);
188 settings->setNoiseParams("mgv5_np_cave2", np_cave2);
189 settings->setNoiseParams("mgv5_np_ground", np_ground);
190 settings->setNoiseParams("mgv5_np_crumble", np_crumble);
191 settings->setNoiseParams("mgv5_np_wetness", np_wetness);
195 void MapgenV5::makeChunk(BlockMakeData *data) {
196 assert(data->vmanip);
197 assert(data->nodedef);
198 assert(data->blockpos_requested.X >= data->blockpos_min.X &&
199 data->blockpos_requested.Y >= data->blockpos_min.Y &&
200 data->blockpos_requested.Z >= data->blockpos_min.Z);
201 assert(data->blockpos_requested.X <= data->blockpos_max.X &&
202 data->blockpos_requested.Y <= data->blockpos_max.Y &&
203 data->blockpos_requested.Z <= data->blockpos_max.Z);
207 ndef = data->nodedef;
208 //TimeTaker t("makeChunk");
210 v3s16 blockpos_min = data->blockpos_min;
211 v3s16 blockpos_max = data->blockpos_max;
212 node_min = blockpos_min * MAP_BLOCKSIZE;
213 node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
214 full_node_min = (blockpos_min - 1) * MAP_BLOCKSIZE;
215 full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
217 // Create a block-specific seed
218 blockseed = emerge->getBlockSeed(full_node_min); //////use getBlockSeed2()!
223 // Generate base terrain
224 generateBaseTerrain();
225 updateHeightmap(node_min, node_max);
227 // Generate underground dirt, sand, gravel and lava blobs
228 if (spflags & MGV5_BLOBS) {
233 BiomeNoiseInput binput;
234 binput.mapsize = v2s16(csize.X, csize.Z);
235 binput.heat_map = noise_heat->result;
236 binput.humidity_map = noise_humidity->result;
237 binput.height_map = heightmap;
238 bmgr->calcBiomes(&binput, biomemap);
240 // Actually place the biome-specific nodes
243 // Generate dungeons and desert temples
244 if (flags & MG_DUNGEONS) {
245 DungeonGen dgen(this, NULL);
246 dgen.generate(blockseed, full_node_min, full_node_max);
249 // Generate the registered decorations
250 emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max);
252 // Generate the registered ores
253 emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max);
255 // Sprinkle some dust on top after everything else was generated
258 //printf("makeChunk: %dms\n", t.stop());
260 // Add top and bottom side of water to transforming_liquid queue
261 updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
263 // Calculate lighting
264 if (flags & MG_LIGHT)
265 calcLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
266 node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE);
268 this->generating = false;
272 void MapgenV5::calculateNoise() {
273 //TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
278 noise_filler_depth->perlinMap2D(x, z);
279 noise_factor->perlinMap2D(x, z);
280 noise_height->perlinMap2D(x, z);
281 noise_height->transformNoiseMap();
283 noise_cave1->perlinMap3D(x, y, z, true);
284 noise_cave1->transformNoiseMap();
285 noise_cave2->perlinMap3D(x, y, z, true);
286 noise_cave2->transformNoiseMap();
287 noise_ground->perlinMap3D(x, y, z, true);
288 noise_ground->transformNoiseMap();
290 if (spflags & MGV5_BLOBS) {
291 noise_crumble->perlinMap3D(x, y, z, true);
292 noise_wetness->perlinMap3D(x, y, z, false);
295 noise_heat->perlinMap2D(x, z);
296 noise_humidity->perlinMap2D(x, z);
298 //printf("calculateNoise: %dus\n", t.stop());
302 //bool is_cave(u32 index) {
303 // double d1 = contour(noise_cave1->result[index]);
304 // double d2 = contour(noise_cave2->result[index]);
305 // return d1*d2 > CAVE_NOISE_THRESHOLD;
309 //bool val_is_ground(v3s16 p, u32 index, u32 index2d) {
310 // double f = 0.55 + noise_factor->result[index2d];
315 // double h = WATER_LEVEL + 10 * noise_height->result[index2d];
316 // return (noise_ground->result[index] * f > (double)p.Y - h);
320 // Make base ground level
321 void MapgenV5::generateBaseTerrain() {
325 for(s16 z=node_min.Z; z<=node_max.Z; z++) {
326 for(s16 y=node_min.Y; y<=node_max.Y; y++) {
327 u32 i = vm->m_area.index(node_min.X, y, z);
328 for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++, index2d++) {
329 if(vm->m_data[i].getContent() != CONTENT_IGNORE)
332 float f = 0.55 + noise_factor->result[index2d];
337 float h = water_level + noise_height->result[index2d];
338 float d1 = contour(noise_cave1->result[index]);
339 float d2 = contour(noise_cave2->result[index]);
340 if(noise_ground->result[index] * f < y - h) {
342 vm->m_data[i] = MapNode(c_water_source);
344 vm->m_data[i] = MapNode(CONTENT_AIR);
345 } else if(d1*d2 > 0.2) {
346 vm->m_data[i] = MapNode(CONTENT_AIR);
348 vm->m_data[i] = MapNode(c_stone);
351 index2d = index2d - ystride;
353 index2d = index2d + ystride;
358 // Add mud and sand and others underground (in place of stone)
359 void MapgenV5::generateBlobs() {
362 for(s16 z=node_min.Z; z<=node_max.Z; z++) {
363 for(s16 y=node_min.Y; y<=node_max.Y; y++) {
364 u32 i = vm->m_area.index(node_min.X, y, z);
365 for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++) {
366 content_t c = vm->m_data[i].getContent();
370 if(noise_crumble->result[index] > 1.3) {
371 if(noise_wetness->result[index] > 0.0)
372 vm->m_data[i] = MapNode(c_dirt);
374 vm->m_data[i] = MapNode(c_sand);
375 } else if(noise_crumble->result[index] > 0.7) {
376 if(noise_wetness->result[index] < -0.6)
377 vm->m_data[i] = MapNode(c_gravel);
378 } else if(noise_crumble->result[index] < -3.5 +
380 sqrt((float)MYMAX(0, -y)), 1.5)) {
381 vm->m_data[i] = MapNode(c_lava_source);
389 void MapgenV5::generateBiomes() {
390 if (node_max.Y < water_level)
393 MapNode n_air(CONTENT_AIR);
394 MapNode n_stone(c_stone);
395 MapNode n_water(c_water_source);
397 v3s16 em = vm->m_area.getExtent();
400 for (s16 z = node_min.Z; z <= node_max.Z; z++)
401 for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
402 Biome *biome = (Biome *)bmgr->get(biomemap[index]);
403 s16 dfiller = biome->depth_filler + noise_filler_depth->result[index];
404 s16 y0_top = biome->depth_top;
405 s16 y0_filler = biome->depth_filler + biome->depth_top + dfiller;
408 u32 i = vm->m_area.index(x, node_max.Y, z);
410 content_t c_above = vm->m_data[i + em.X].getContent();
411 bool have_air = c_above == CONTENT_AIR;
413 for (s16 y = node_max.Y; y >= node_min.Y; y--) {
414 content_t c = vm->m_data[i].getContent();
415 if ((c == c_stone || c == c_dirt_with_grass
418 || c == c_lava_source
419 || c == c_gravel) && have_air) {
420 content_t c_below = vm->m_data[i - em.X].getContent();
422 if (c_below != CONTENT_AIR) {
423 if (nplaced < y0_top) {
424 // A hack to prevent dirt_with_grass from being
425 // placed below water. TODO: fix later
426 content_t c_place = ((y < water_level) &&
428 c_dirt_with_grass)) ?
429 c_dirt : biome->c_top;
431 vm->m_data[i] = MapNode(c_place);
433 } else if (nplaced < y0_filler && nplaced >= y0_top) {
434 vm->m_data[i] = MapNode(biome->c_filler);
441 } else if (c == c_water_source) {
444 vm->m_data[i] = MapNode(biome->c_water);
445 } else if (c == CONTENT_AIR) {
450 vm->m_area.add_y(em, i, -1);
455 void MapgenV5::dustTopNodes() {
456 v3s16 em = vm->m_area.getExtent();
459 if (water_level > node_max.Y)
462 for (s16 z = node_min.Z; z <= node_max.Z; z++)
463 for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
464 Biome *biome = (Biome *)bmgr->get(biomemap[index]);
466 if (biome->c_dust == CONTENT_IGNORE)
470 u32 vi = vm->m_area.index(x, y, z);
471 for (; y >= node_min.Y; y--) {
472 if (vm->m_data[vi].getContent() != CONTENT_AIR)
475 vm->m_area.add_y(em, vi, -1);
478 content_t c = vm->m_data[vi].getContent();
479 if (c == biome->c_water && biome->c_dust_water != CONTENT_IGNORE) {
483 vm->m_data[vi] = MapNode(biome->c_dust_water);
484 } else if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE) {
488 vm->m_area.add_y(em, vi, 1);
489 vm->m_data[vi] = MapNode(biome->c_dust);