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/*
Minetest Valleys C
Copyright (C) 2010-2015 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2010-2015 paramat, Matt Gregory
Copyright (C) 2016 Duane Robertson <duane@duanerobertson.com>
Based on Valleys Mapgen by Gael de Sailly
(https://forum.minetest.net/viewtopic.php?f=9&t=11430)
and mapgen_v7 by kwolekr and paramat.
Licensing changed by permission of Gael de Sailly.
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.
*/
#ifndef MAPGEN_VALLEYS_HEADER
#define MAPGEN_VALLEYS_HEADER
#include "mapgen.h"
////////////// Mapgen Valleys flags
#define MGVALLEYS_ALT_CHILL 0x01
#define MGVALLEYS_HUMID_RIVERS 0x02
// Feed only one variable into these.
#define MYSQUARE(x) (x) * (x)
#define MYCUBE(x) (x) * (x) * (x)
class BiomeManager;
// Global profiler
//class Profiler;
//extern Profiler *mapgen_profiler;
struct MapgenValleysParams : public MapgenSpecificParams {
u32 spflags;
s16 large_cave_depth;
s16 massive_cave_depth;
u16 altitude_chill;
u16 lava_features;
u16 river_depth;
u16 river_size;
u16 water_features;
float cave_width;
NoiseParams np_cave1;
NoiseParams np_cave2;
NoiseParams np_filler_depth;
NoiseParams np_inter_valley_fill;
NoiseParams np_inter_valley_slope;
NoiseParams np_rivers;
NoiseParams np_massive_caves;
NoiseParams np_terrain_height;
NoiseParams np_valley_depth;
NoiseParams np_valley_profile;
MapgenValleysParams();
~MapgenValleysParams() {}
void readParams(const Settings *settings);
void writeParams(Settings *settings) const;
};
struct TerrainNoise {
s16 x;
s16 z;
float terrain_height;
float *rivers;
float *valley;
float valley_profile;
float *slope;
float inter_valley_fill;
};
class MapgenValleys : public Mapgen {
public:
MapgenValleys(int mapgenid, MapgenParams *params, EmergeManager *emerge);
~MapgenValleys();
virtual void makeChunk(BlockMakeData *data);
int getSpawnLevelAtPoint(v2s16 p);
s16 large_cave_depth;
private:
EmergeManager *m_emerge;
BiomeManager *bmgr;
int ystride;
int zstride;
int zstride_1d;
float map_gen_limit;
bool humid_rivers;
bool use_altitude_chill;
float humidity_adjust;
s16 cave_water_max_height;
s16 lava_max_height;
v3s16 node_min;
v3s16 node_max;
v3s16 full_node_min;
v3s16 full_node_max;
u32 spflags;
float altitude_chill;
s16 lava_features_lim;
s16 massive_cave_depth;
float river_depth_bed;
float river_size_factor;
float *tcave_cache;
s16 water_features_lim;
float cave_width;
Noise *noise_filler_depth;
Noise *noise_cave1;
Noise *noise_cave2;
Noise *noise_inter_valley_fill;
Noise *noise_inter_valley_slope;
Noise *noise_rivers;
Noise *noise_massive_caves;
Noise *noise_terrain_height;
Noise *noise_valley_depth;
Noise *noise_valley_profile;
Noise *noise_heat;
Noise *noise_heat_blend;
Noise *noise_humidity;
Noise *noise_humidity_blend;
content_t c_cobble;
content_t c_desert_stone;
content_t c_dirt;
content_t c_ice;
content_t c_lava_source;
content_t c_mossycobble;
content_t c_river_water_source;
content_t c_sand;
content_t c_sandstone;
content_t c_sandstonebrick;
content_t c_stair_cobble;
content_t c_stair_sandstonebrick;
content_t c_stone;
content_t c_water_source;
float terrainLevelAtPoint(s16 x, s16 z);
void calculateNoise();
virtual int generateTerrain();
float terrainLevelFromNoise(TerrainNoise *tn);
float adjustedTerrainLevelFromNoise(TerrainNoise *tn);
float humidityByTerrain(float humidity_base, float mount, float rivers, float valley);
MgStoneType generateBiomes(float *heat_map, float *humidity_map);
void dustTopNodes();
void generateCaves(s16 max_stone_y);
};
struct MapgenFactoryValleys : public MapgenFactory {
Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge)
{
return new MapgenValleys(mgid, params, emerge);
};
MapgenSpecificParams *createMapgenParams()
{
return new MapgenValleysParams();
};
};
#endif
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