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Diffstat (limited to 'src/mapgen_valleys.h')
| -rw-r--r-- | src/mapgen_valleys.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/mapgen_valleys.h b/src/mapgen_valleys.h new file mode 100644 index 000000000..5224ea54b --- /dev/null +++ b/src/mapgen_valleys.h @@ -0,0 +1,187 @@ +/* +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 |