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- /*
- Minetest Valleys C
- Copyright (C) 2016-2017 Duane Robertson <duane@duanerobertson.com>
- Copyright (C) 2016-2017 paramat
- 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.
- */
- #pragma once
- #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;
- class BiomeGenOriginal;
- // Global profiler
- //class Profiler;
- //extern Profiler *mapgen_profiler;
- struct MapgenValleysParams : public MapgenParams {
- u32 spflags = MGVALLEYS_HUMID_RIVERS | MGVALLEYS_ALT_CHILL;
- s16 large_cave_depth = -33;
- s16 massive_cave_depth = -256; // highest altitude of massive caves
- u16 altitude_chill = 90; // The altitude at which temperature drops by 20C.
- u16 lava_features = 0; // How often water will occur in caves.
- u16 river_depth = 4; // How deep to carve river channels.
- u16 river_size = 5; // How wide to make rivers.
- u16 water_features = 0; // How often water will occur in caves.
- float cave_width = 0.09f;
- 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() = default;
- 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 MapgenBasic {
- public:
- MapgenValleys(int mapgenid, MapgenValleysParams *params, EmergeManager *emerge);
- ~MapgenValleys();
- virtual MapgenType getType() const { return MAPGEN_VALLEYS; }
- virtual void makeChunk(BlockMakeData *data);
- int getSpawnLevelAtPoint(v2s16 p);
- s16 large_cave_depth;
- private:
- BiomeGenOriginal *m_bgen;
- bool humid_rivers;
- bool use_altitude_chill;
- float humidity_adjust;
- s16 cave_water_max_height;
- s16 lava_max_height;
- 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;
- Noise *noise_inter_valley_fill;
- Noise *noise_inter_valley_slope;
- Noise *noise_rivers;
- Noise *noise_cave1;
- Noise *noise_cave2;
- Noise *noise_massive_caves;
- Noise *noise_terrain_height;
- Noise *noise_valley_depth;
- Noise *noise_valley_profile;
- float terrainLevelAtPoint(s16 x, s16 z);
- void calculateNoise();
- virtual int generateTerrain();
- float terrainLevelFromNoise(TerrainNoise *tn);
- float adjustedTerrainLevelFromNoise(TerrainNoise *tn);
- virtual void generateCaves(s16 max_stone_y, s16 large_cave_depth);
- };
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