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"
43 FlagDesc flagdesc_mapgen[] = {
46 {"dungeons", MG_DUNGEONS},
52 FlagDesc flagdesc_gennotify[] = {
53 {"dungeon", 1 << GENNOTIFY_DUNGEON},
54 {"temple", 1 << GENNOTIFY_TEMPLE},
55 {"cave_begin", 1 << GENNOTIFY_CAVE_BEGIN},
56 {"cave_end", 1 << GENNOTIFY_CAVE_END},
57 {"large_cave_begin", 1 << GENNOTIFY_LARGECAVE_BEGIN},
58 {"large_cave_end", 1 << GENNOTIFY_LARGECAVE_END},
59 {"decoration", 1 << GENNOTIFY_DECORATION},
64 ///////////////////////////////////////////////////////////////////////////////
84 Mapgen::Mapgen(int mapgenid, MapgenParams *params, EmergeManager *emerge) :
85 gennotify(emerge->gen_notify_on, &emerge->gen_notify_on_deco_ids)
89 seed = (int)params->seed;
90 water_level = params->water_level;
91 flags = params->flags;
92 csize = v3s16(1, 1, 1) * (params->chunksize * MAP_BLOCKSIZE);
108 u32 Mapgen::getBlockSeed(v3s16 p, int seed)
117 u32 Mapgen::getBlockSeed2(v3s16 p, int seed)
119 u32 n = 1619 * p.X + 31337 * p.Y + 52591 * p.Z + 1013 * seed;
121 return (n * (n * n * 60493 + 19990303) + 1376312589);
125 // Returns Y one under area minimum if not found
126 s16 Mapgen::findGroundLevelFull(v2s16 p2d)
128 v3s16 em = vm->m_area.getExtent();
129 s16 y_nodes_max = vm->m_area.MaxEdge.Y;
130 s16 y_nodes_min = vm->m_area.MinEdge.Y;
131 u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
134 for (y = y_nodes_max; y >= y_nodes_min; y--) {
135 MapNode &n = vm->m_data[i];
136 if (ndef->get(n).walkable)
139 vm->m_area.add_y(em, i, -1);
141 return (y >= y_nodes_min) ? y : y_nodes_min - 1;
145 // Returns -MAX_MAP_GENERATION_LIMIT if not found
146 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax)
148 v3s16 em = vm->m_area.getExtent();
149 u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
152 for (y = ymax; y >= ymin; y--) {
153 MapNode &n = vm->m_data[i];
154 if (ndef->get(n).walkable)
157 vm->m_area.add_y(em, i, -1);
159 return (y >= ymin) ? y : -MAX_MAP_GENERATION_LIMIT;
163 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax)
168 //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
170 for (s16 z = nmin.Z; z <= nmax.Z; z++) {
171 for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
172 s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
174 heightmap[index] = y;
177 //printf("updateHeightmap: %dus\n", t.stop());
181 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax)
183 bool isliquid, wasliquid;
184 v3s16 em = vm->m_area.getExtent();
186 for (s16 z = nmin.Z; z <= nmax.Z; z++) {
187 for (s16 x = nmin.X; x <= nmax.X; x++) {
190 u32 i = vm->m_area.index(x, nmax.Y, z);
191 for (s16 y = nmax.Y; y >= nmin.Y; y--) {
192 isliquid = ndef->get(vm->m_data[i]).isLiquid();
194 // there was a change between liquid and nonliquid, add to queue.
195 if (isliquid != wasliquid)
196 trans_liquid->push_back(v3s16(x, y, z));
198 wasliquid = isliquid;
199 vm->m_area.add_y(em, i, -1);
206 void Mapgen::setLighting(u8 light, v3s16 nmin, v3s16 nmax)
208 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
209 VoxelArea a(nmin, nmax);
211 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
212 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
213 u32 i = vm->m_area.index(a.MinEdge.X, y, z);
214 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
215 vm->m_data[i].param1 = light;
221 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light)
223 if (light <= 1 || !a.contains(p))
226 u32 vi = vm->m_area.index(p);
227 MapNode &nn = vm->m_data[vi];
230 // should probably compare masked, but doesn't seem to make a difference
231 if (light <= nn.param1 || !ndef->get(nn).light_propagates)
236 lightSpread(a, p + v3s16(0, 0, 1), light);
237 lightSpread(a, p + v3s16(0, 1, 0), light);
238 lightSpread(a, p + v3s16(1, 0, 0), light);
239 lightSpread(a, p - v3s16(0, 0, 1), light);
240 lightSpread(a, p - v3s16(0, 1, 0), light);
241 lightSpread(a, p - v3s16(1, 0, 0), light);
245 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax, v3s16 full_nmin, v3s16 full_nmax)
247 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
248 //TimeTaker t("updateLighting");
250 propagateSunlight(nmin, nmax);
251 spreadLight(full_nmin, full_nmax);
253 //printf("updateLighting: %dms\n", t.stop());
258 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax)
260 ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
261 //TimeTaker t("updateLighting");
264 nmin - v3s16(1, 1, 1) * MAP_BLOCKSIZE,
265 nmax + v3s16(1, 0, 1) * MAP_BLOCKSIZE);
268 nmin - v3s16(1, 1, 1) * MAP_BLOCKSIZE,
269 nmax + v3s16(1, 1, 1) * MAP_BLOCKSIZE);
271 //printf("updateLighting: %dms\n", t.stop());
275 void Mapgen::propagateSunlight(v3s16 nmin, v3s16 nmax)
277 //TimeTaker t("propagateSunlight");
278 VoxelArea a(nmin, nmax);
279 bool block_is_underground = (water_level >= nmax.Y);
280 v3s16 em = vm->m_area.getExtent();
282 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
283 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
284 // see if we can get a light value from the overtop
285 u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
286 if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
287 if (block_is_underground)
289 } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN) {
292 vm->m_area.add_y(em, i, -1);
294 for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
295 MapNode &n = vm->m_data[i];
296 if (!ndef->get(n).sunlight_propagates)
298 n.param1 = LIGHT_SUN;
299 vm->m_area.add_y(em, i, -1);
303 //printf("propagateSunlight: %dms\n", t.stop());
308 void Mapgen::spreadLight(v3s16 nmin, v3s16 nmax)
310 //TimeTaker t("spreadLight");
311 VoxelArea a(nmin, nmax);
313 for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
314 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
315 u32 i = vm->m_area.index(a.MinEdge.X, y, z);
316 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
317 MapNode &n = vm->m_data[i];
318 if (n.getContent() == CONTENT_IGNORE ||
319 !ndef->get(n).light_propagates)
322 u8 light_produced = ndef->get(n).light_source & 0x0F;
324 n.param1 = light_produced;
326 u8 light = n.param1 & 0x0F;
328 lightSpread(a, v3s16(x, y, z + 1), light);
329 lightSpread(a, v3s16(x, y + 1, z ), light);
330 lightSpread(a, v3s16(x + 1, y, z ), light);
331 lightSpread(a, v3s16(x, y, z - 1), light);
332 lightSpread(a, v3s16(x, y - 1, z ), light);
333 lightSpread(a, v3s16(x - 1, y, z ), light);
339 //printf("spreadLight: %dms\n", t.stop());
344 ///////////////////////////////////////////////////////////////////////////////
346 GenerateNotifier::GenerateNotifier()
352 GenerateNotifier::GenerateNotifier(u32 notify_on,
353 std::set<u32> *notify_on_deco_ids)
355 m_notify_on = notify_on;
356 m_notify_on_deco_ids = notify_on_deco_ids;
360 void GenerateNotifier::setNotifyOn(u32 notify_on)
362 m_notify_on = notify_on;
366 void GenerateNotifier::setNotifyOnDecoIds(std::set<u32> *notify_on_deco_ids)
368 m_notify_on_deco_ids = notify_on_deco_ids;
372 bool GenerateNotifier::addEvent(GenNotifyType type, v3s16 pos, u32 id)
374 if (!(m_notify_on & (1 << type)))
377 if (type == GENNOTIFY_DECORATION &&
378 m_notify_on_deco_ids->find(id) == m_notify_on_deco_ids->end())
385 m_notify_events.push_back(gne);
391 void GenerateNotifier::getEvents(
392 std::map<std::string, std::vector<v3s16> > &event_map,
395 std::list<GenNotifyEvent>::iterator it;
397 for (it = m_notify_events.begin(); it != m_notify_events.end(); ++it) {
398 GenNotifyEvent &gn = *it;
399 std::string name = (gn.type == GENNOTIFY_DECORATION) ?
400 "decoration#"+ itos(gn.id) :
401 flagdesc_gennotify[gn.type].name;
403 event_map[name].push_back(gn.pos);
407 m_notify_events.clear();
410 ///////////////////////////////////////////////////////////////////////////////
412 void MapgenParams::load(const Settings &settings)
414 std::string seed_str;
415 const char *seed_name = (&settings == g_settings) ? "fixed_map_seed" : "seed";
417 if (settings.getNoEx(seed_name, seed_str) && !seed_str.empty())
418 seed = read_seed(seed_str.c_str());
420 myrand_bytes(&seed, sizeof(seed));
422 settings.getNoEx("mg_name", mg_name);
423 settings.getS16NoEx("water_level", water_level);
424 settings.getS16NoEx("chunksize", chunksize);
425 settings.getFlagStrNoEx("mg_flags", flags, flagdesc_mapgen);
426 settings.getNoiseParams("mg_biome_np_heat", np_biome_heat);
427 settings.getNoiseParams("mg_biome_np_heat_blend", np_biome_heat_blend);
428 settings.getNoiseParams("mg_biome_np_humidity", np_biome_humidity);
429 settings.getNoiseParams("mg_biome_np_humidity_blend", np_biome_humidity_blend);
432 sparams = EmergeManager::createMapgenParams(mg_name);
434 sparams->readParams(&settings);
438 void MapgenParams::save(Settings &settings) const
440 settings.set("mg_name", mg_name);
441 settings.setU64("seed", seed);
442 settings.setS16("water_level", water_level);
443 settings.setS16("chunksize", chunksize);
444 settings.setFlagStr("mg_flags", flags, flagdesc_mapgen, U32_MAX);
445 settings.setNoiseParams("mg_biome_np_heat", np_biome_heat);
446 settings.setNoiseParams("mg_biome_np_heat_blend", np_biome_heat_blend);
447 settings.setNoiseParams("mg_biome_np_humidity", np_biome_humidity);
448 settings.setNoiseParams("mg_biome_np_humidity_blend", np_biome_humidity_blend);
451 sparams->writeParams(&settings);