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/*
Minetest
Copyright (C) 2010-2013 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) {
}
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