3 Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
4 Copyright (C) 2014-2017 paramat
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.
22 #include "mg_decoration.h"
26 #include "map.h" //for MMVManip
27 #include "util/numeric.h"
32 ///////////////////////////////////////////////////////////////////////////////
35 BiomeManager::BiomeManager(Server *server) :
36 ObjDefManager(server, OBJDEF_BIOME)
40 // Create default biome to be used in case none exist
46 b->depth_filler = -MAX_MAP_GENERATION_LIMIT;
47 b->depth_water_top = 0;
48 b->depth_riverbed = 0;
49 b->y_min = -MAX_MAP_GENERATION_LIMIT;
50 b->y_max = MAX_MAP_GENERATION_LIMIT;
52 b->humidity_point = 0.0;
54 b->m_nodenames.emplace_back("mapgen_stone");
55 b->m_nodenames.emplace_back("mapgen_stone");
56 b->m_nodenames.emplace_back("mapgen_stone");
57 b->m_nodenames.emplace_back("mapgen_water_source");
58 b->m_nodenames.emplace_back("mapgen_water_source");
59 b->m_nodenames.emplace_back("mapgen_river_water_source");
60 b->m_nodenames.emplace_back("mapgen_stone");
61 b->m_nodenames.emplace_back("ignore");
62 m_ndef->pendNodeResolve(b);
68 void BiomeManager::clear()
70 EmergeManager *emerge = m_server->getEmergeManager();
72 // Remove all dangling references in Decorations
73 DecorationManager *decomgr = emerge->decomgr;
74 for (size_t i = 0; i != decomgr->getNumObjects(); i++) {
75 Decoration *deco = (Decoration *)decomgr->getRaw(i);
79 // Don't delete the first biome
80 for (size_t i = 1; i < m_objects.size(); i++)
81 delete (Biome *)m_objects[i];
86 ////////////////////////////////////////////////////////////////////////////////
89 void BiomeParamsOriginal::readParams(const Settings *settings)
91 settings->getNoiseParams("mg_biome_np_heat", np_heat);
92 settings->getNoiseParams("mg_biome_np_heat_blend", np_heat_blend);
93 settings->getNoiseParams("mg_biome_np_humidity", np_humidity);
94 settings->getNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend);
98 void BiomeParamsOriginal::writeParams(Settings *settings) const
100 settings->setNoiseParams("mg_biome_np_heat", np_heat);
101 settings->setNoiseParams("mg_biome_np_heat_blend", np_heat_blend);
102 settings->setNoiseParams("mg_biome_np_humidity", np_humidity);
103 settings->setNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend);
107 ////////////////////////////////////////////////////////////////////////////////
109 BiomeGenOriginal::BiomeGenOriginal(BiomeManager *biomemgr,
110 BiomeParamsOriginal *params, v3s16 chunksize)
116 noise_heat = new Noise(¶ms->np_heat,
117 params->seed, m_csize.X, m_csize.Z);
118 noise_humidity = new Noise(¶ms->np_humidity,
119 params->seed, m_csize.X, m_csize.Z);
120 noise_heat_blend = new Noise(¶ms->np_heat_blend,
121 params->seed, m_csize.X, m_csize.Z);
122 noise_humidity_blend = new Noise(¶ms->np_humidity_blend,
123 params->seed, m_csize.X, m_csize.Z);
125 heatmap = noise_heat->result;
126 humidmap = noise_humidity->result;
127 biomemap = new biome_t[m_csize.X * m_csize.Z];
130 BiomeGenOriginal::~BiomeGenOriginal()
135 delete noise_humidity;
136 delete noise_heat_blend;
137 delete noise_humidity_blend;
141 Biome *BiomeGenOriginal::calcBiomeAtPoint(v3s16 pos) const
144 NoisePerlin2D(&m_params->np_heat, pos.X, pos.Z, m_params->seed) +
145 NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
147 NoisePerlin2D(&m_params->np_humidity, pos.X, pos.Z, m_params->seed) +
148 NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
150 return calcBiomeFromNoise(heat, humidity, pos.Y);
154 void BiomeGenOriginal::calcBiomeNoise(v3s16 pmin)
158 noise_heat->perlinMap2D(pmin.X, pmin.Z);
159 noise_humidity->perlinMap2D(pmin.X, pmin.Z);
160 noise_heat_blend->perlinMap2D(pmin.X, pmin.Z);
161 noise_humidity_blend->perlinMap2D(pmin.X, pmin.Z);
163 for (s32 i = 0; i < m_csize.X * m_csize.Z; i++) {
164 noise_heat->result[i] += noise_heat_blend->result[i];
165 noise_humidity->result[i] += noise_humidity_blend->result[i];
170 biome_t *BiomeGenOriginal::getBiomes(s16 *heightmap)
172 for (s32 i = 0; i != m_csize.X * m_csize.Z; i++) {
173 Biome *biome = calcBiomeFromNoise(
174 noise_heat->result[i],
175 noise_humidity->result[i],
178 biomemap[i] = biome->index;
185 Biome *BiomeGenOriginal::getBiomeAtPoint(v3s16 pos) const
187 return getBiomeAtIndex(
188 (pos.Z - m_pmin.Z) * m_csize.X + (pos.X - m_pmin.X),
193 Biome *BiomeGenOriginal::getBiomeAtIndex(size_t index, s16 y) const
195 return calcBiomeFromNoise(
196 noise_heat->result[index],
197 noise_humidity->result[index],
202 Biome *BiomeGenOriginal::calcBiomeFromNoise(float heat, float humidity, s16 y) const
204 Biome *b, *biome_closest = NULL;
205 float dist_min = FLT_MAX;
207 for (size_t i = 1; i < m_bmgr->getNumObjects(); i++) {
208 b = (Biome *)m_bmgr->getRaw(i);
209 if (!b || y > b->y_max || y < b->y_min)
212 float d_heat = heat - b->heat_point;
213 float d_humidity = humidity - b->humidity_point;
214 float dist = (d_heat * d_heat) +
215 (d_humidity * d_humidity);
216 if (dist < dist_min) {
222 return biome_closest ? biome_closest : (Biome *)m_bmgr->getRaw(BIOME_NONE);
226 ////////////////////////////////////////////////////////////////////////////////
228 void Biome::resolveNodeNames()
230 getIdFromNrBacklog(&c_top, "mapgen_stone", CONTENT_AIR);
231 getIdFromNrBacklog(&c_filler, "mapgen_stone", CONTENT_AIR);
232 getIdFromNrBacklog(&c_stone, "mapgen_stone", CONTENT_AIR);
233 getIdFromNrBacklog(&c_water_top, "mapgen_water_source", CONTENT_AIR);
234 getIdFromNrBacklog(&c_water, "mapgen_water_source", CONTENT_AIR);
235 getIdFromNrBacklog(&c_river_water, "mapgen_river_water_source", CONTENT_AIR);
236 getIdFromNrBacklog(&c_riverbed, "mapgen_stone", CONTENT_AIR);
237 getIdFromNrBacklog(&c_dust, "ignore", CONTENT_IGNORE);