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.
22 #include "map.h" //for ManualMapVoxelManipulator
27 NoiseParams nparams_biome_def_heat =
28 {50, 50, v3f(500.0, 500.0, 500.0), 5349, 3, 0.70};
29 NoiseParams nparams_biome_def_humidity =
30 {50, 50, v3f(500.0, 500.0, 500.0), 842, 3, 0.55};
33 BiomeDefManager::BiomeDefManager() {
34 biome_registration_finished = false;
35 np_heat = &nparams_biome_def_heat;
36 np_humidity = &nparams_biome_def_humidity;
38 // Create default biome to be used in case none exist
49 b->nname_filler = "air";
50 b->nname_water = "mapgen_water_source";
51 b->nname_dust = "air";
52 b->nname_dust_water = "mapgen_water_source";
54 b->c_top = CONTENT_IGNORE;
55 b->c_filler = CONTENT_IGNORE;
56 b->c_water = CONTENT_IGNORE;
57 b->c_dust = CONTENT_IGNORE;
58 b->c_dust_water = CONTENT_IGNORE;
60 b->height_min = -MAP_GENERATION_LIMIT;
61 b->height_max = MAP_GENERATION_LIMIT;
63 b->humidity_point = 0.0;
69 BiomeDefManager::~BiomeDefManager() {
71 // delete[] biomecache;
73 for (size_t i = 0; i != biomes.size(); i++)
78 Biome *BiomeDefManager::createBiome(BiomeTerrainType btt) {
80 case BIOME_TERRAIN_NORMAL:
82 case BIOME_TERRAIN_LIQUID:
83 return new BiomeLiquid;
84 case BIOME_TERRAIN_NETHER:
86 case BIOME_TERRAIN_AETHER:
88 case BIOME_TERRAIN_FLAT:
89 return new BiomeSuperflat;
96 // just a PoC, obviously needs optimization later on (precalculate this)
97 void BiomeDefManager::calcBiomes(BiomeNoiseInput *input, u8 *biomeid_map) {
99 for (int y = 0; y != input->mapsize.Y; y++) {
100 for (int x = 0; x != input->mapsize.X; x++, i++) {
101 float heat = (input->heat_map[i] + 1) * 50;
102 float humidity = (input->humidity_map[i] + 1) * 50;
103 biomeid_map[i] = getBiome(heat, humidity, input->height_map[i])->id;
109 void BiomeDefManager::resolveNodeNames(INodeDefManager *ndef) {
112 biome_registration_finished = true;
114 for (size_t i = 0; i < biomes.size(); i++) {
117 b->c_top = ndef->getId(b->nname_top);
118 if (b->c_top == CONTENT_IGNORE) {
119 errorstream << "BiomeDefManager::resolveNodeNames: node '"
120 << b->nname_top << "' not defined" << std::endl;
121 b->c_top = CONTENT_AIR;
125 b->c_filler = ndef->getId(b->nname_filler);
126 if (b->c_filler == CONTENT_IGNORE) {
127 errorstream << "BiomeDefManager::resolveNodeNames: node '"
128 << b->nname_filler << "' not defined" << std::endl;
129 b->c_filler = CONTENT_AIR;
133 b->c_water = ndef->getId(b->nname_water);
134 if (b->c_water == CONTENT_IGNORE) {
135 errorstream << "BiomeDefManager::resolveNodeNames: node '"
136 << b->nname_water << "' not defined" << std::endl;
137 b->c_water = CONTENT_AIR;
140 b->c_dust = ndef->getId(b->nname_dust);
141 if (b->c_dust == CONTENT_IGNORE) {
142 errorstream << "BiomeDefManager::resolveNodeNames: node '"
143 << b->nname_dust << "' not defined" << std::endl;
146 b->c_dust_water = ndef->getId(b->nname_dust_water);
147 if (b->c_dust_water == CONTENT_IGNORE) {
148 errorstream << "BiomeDefManager::resolveNodeNames: node '"
149 << b->nname_dust_water << "' not defined" << std::endl;
155 void BiomeDefManager::addBiome(Biome *b) {
156 if (biome_registration_finished) {
157 errorstream << "BIomeDefManager: biome registration already finished, dropping " << b->name <<std::endl;
162 size_t nbiomes = biomes.size();
163 if (nbiomes >= 0xFF) {
164 errorstream << "BiomeDefManager: too many biomes, dropping " << b->name << std::endl;
171 verbosestream << "BiomeDefManager: added biome " << b->name << std::endl;
175 Biome *BiomeDefManager::getBiome(float heat, float humidity, s16 y) {
176 Biome *b, *biome_closest = NULL;
177 float dist_min = FLT_MAX;
179 for (size_t i = 1; i < biomes.size(); i++) {
181 if (y > b->height_max || y < b->height_min)
184 float d_heat = heat - b->heat_point;
185 float d_humidity = humidity - b->humidity_point;
186 float dist = (d_heat * d_heat) +
187 (d_humidity * d_humidity);
188 if (dist < dist_min) {
194 return biome_closest ? biome_closest : biomes[0];
198 u8 BiomeDefManager::getBiomeIdByName(const char *name) {
199 for (size_t i = 0; i != biomes.size(); i++) {
200 if (!strcasecmp(name, biomes[i]->name.c_str()))