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Diffstat (limited to 'src/biome.cpp')
| -rw-r--r-- | src/biome.cpp | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/src/biome.cpp b/src/biome.cpp new file mode 100644 index 000000000..34d51839f --- /dev/null +++ b/src/biome.cpp @@ -0,0 +1,233 @@ +/* +Minetest-c55 +Copyright (C) 2010-2011 kwolekr, Ryan Kwolek <kwolekr2@cs.scranton.edu> + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 2.1 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "biome.h" +#include "nodedef.h" +#include "map.h" //for ManualMapVoxelManipulator +#include "log.h" +#include "main.h" + +#define BT_NONE 0 +#define BT_OCEAN 1 +#define BT_LAKE 2 +#define BT_SBEACH 3 +#define BT_GBEACH 4 +#define BT_PLAINS 5 +#define BT_HILLS 6 +#define BT_EXTREMEHILLS 7 +#define BT_MOUNTAINS 8 +#define BT_DESERT 9 +#define BT_DESERTHILLS 10 +#define BT_HELL 11 +#define BT_AETHER 12 + +#define BT_BTMASK 0x3F + +#define BTF_SNOW 0x40 +#define BTF_FOREST 0x80 + +#define BGFREQ_1 ( 0.40) +#define BGFREQ_2 (BGFREQ_1 + 0.05) +#define BGFREQ_3 (BGFREQ_2 + 0.08) +#define BGFREQ_4 (BGFREQ_3 + 0.35) +#define BGFREQ_5 (BGFREQ_4 + 0.18) +//BGFREQ_5 is not checked as an upper bound; it ought to sum up to 1.00, but it's okay if it doesn't. + + +/*float bg1_temps[] = {0.0}; +int bg1_biomes[] = {BT_OCEAN}; + +float bg2_temps[] = {10.0}; +int bg2_biomes[] = {BT_GBEACH, BT_SBEACH}; + +float bg3_temps[] = {30.0, 40.0}; +int bg3_biomes[] = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS}; + +float bg4_temps[] = {25.0, 30.0, 35.0, 40.0}; +int bg4_biomes[] = {BT_HILLS, BT_EXTREMEHILLS, BT_MOUNTAINS, BT_DESERT, BT_DESERTHILLS}; + +float bg5_temps[] = {5.0, 40.0}; +int bg5_biomes[] = {BT_LAKE, BT_PLAINS, BT_DESERT};*/ + +NoiseParams np_default = {20.0, 15.0, v3f(250., 250., 250.), 82341, 5, 0.6}; + + +BiomeDefManager::BiomeDefManager(IGameDef *gamedef) { + this->m_gamedef = gamedef; + this->ndef = gamedef->ndef(); + + //the initial biome group + bgroups.push_back(new std::vector<Biome *>); +} + + +BiomeDefManager::~BiomeDefManager() { + for (unsigned int i = 0; i != bgroups.size(); i++) + delete bgroups[i]; +} + + +Biome *BiomeDefManager::createBiome(BiomeTerrainType btt) { + switch (btt) { + case BIOME_TERRAIN_NORMAL: + return new Biome; + case BIOME_TERRAIN_LIQUID: + return new BiomeLiquid; + case BIOME_TERRAIN_NETHER: + return new BiomeHell; + case BIOME_TERRAIN_AETHER: + return new BiomeAether; + case BIOME_TERRAIN_FLAT: + return new BiomeSuperflat; + } + return NULL; +} + + +void BiomeDefManager::addBiomeGroup(float freq) { + int size = bgroup_freqs.size(); + float newfreq = freq; + + if (size) + newfreq += bgroup_freqs[size - 1]; + bgroup_freqs.push_back(newfreq); + bgroups.push_back(new std::vector<Biome *>); + + verbosestream << "BiomeDefManager: added biome group with frequency " << + newfreq << std::endl; +} + + +void BiomeDefManager::addBiome(Biome *b) { + std::vector<Biome *> *bgroup; + + if ((unsigned int)b->groupid >= bgroups.size()) { + errorstream << "BiomeDefManager: attempted to add biome '" << b->name + << "' to nonexistent biome group " << b->groupid << std::endl; + return; + } + + bgroup = bgroups[b->groupid]; + bgroup->push_back(b); + + verbosestream << "BiomeDefManager: added biome '" << b->name << + "' to biome group " << (int)b->groupid << std::endl; +} + + +void BiomeDefManager::addDefaultBiomes() { + Biome *b; + + b = new Biome; + b->name = "Default"; + b->n_top = MapNode(ndef->getId("mapgen_stone")); + b->n_filler = b->n_top; + b->ntopnodes = 0; + b->height_min = -MAP_GENERATION_LIMIT; + b->height_max = MAP_GENERATION_LIMIT; + b->heat_min = FLT_MIN; + b->heat_max = FLT_MAX; + b->humidity_min = FLT_MIN; + b->humidity_max = FLT_MAX; + b->np = &np_default; + biome_default = b; +} + + +Biome *BiomeDefManager::getBiome(float bgfreq, float heat, float humidity) { + std::vector<Biome *> *bgroup; + Biome *b; + int i; + + int ngroups = bgroup_freqs.size(); + if (!ngroups) + return biome_default; + for (i = 0; (i != ngroups) && (bgfreq > bgroup_freqs[i]); i++); + bgroup = bgroups[i]; + + int nbiomes = bgroup->size(); + for (i = 0; i != nbiomes; i++) { + b = bgroup->operator[](i); + if (heat >= b->heat_min && heat <= b->heat_max && + humidity >= b->humidity_min && humidity <= b->humidity_max) + return b; + } + + return biome_default; +} + + +//////////////////////////// [ Generic biome ] //////////////////////////////// + + +int Biome::getSurfaceHeight(float noise_terrain) { + return np->offset + np->scale * noise_terrain; +} + + +void Biome::genColumn(Mapgen *mapgen, int x, int z, int y1, int y2) { + +} + + +///////////////////////////// [ Ocean biome ] ///////////////////////////////// + + +void BiomeLiquid::genColumn(Mapgen *mapgen, int x, int z, int y1, int y2) { + +} + + +///////////////////////////// [ Nether biome ] ///////////////////////////////// + + +int BiomeHell::getSurfaceHeight(float noise_terrain) { + return np->offset + np->scale * noise_terrain; +} + + +void BiomeHell::genColumn(Mapgen *mapgen, int x, int z, int y1, int y2) { + +} + + +///////////////////////////// [ Aether biome ] //////////////////////////////// + + +int BiomeAether::getSurfaceHeight(float noise_terrain) { + return np->offset + np->scale * noise_terrain; +} + + +void BiomeAether::genColumn(Mapgen *mapgen, int x, int z, int y1, int y2) { + +} + + +/////////////////////////// [ Superflat biome ] /////////////////////////////// + + +int BiomeSuperflat::getSurfaceHeight(float noise_terrain) { + return ntopnodes; +} + + +void BiomeSuperflat::genColumn(Mapgen *mapgen, int x, int z, int y1, int y2) { + +} |