12a8f8826d
Caverns first appeared in mgvalleys and were later added to other mapgens as shared code. Now this shared code can replace mgvalley's internal cavern code. Also use shared tunnel code instead of internal code. Changes to mapgen that will affect existing worlds (mgvalleys is not stable): Single lava and water sources not added in tunnels. Previous caverns are unchanged but an equal number of new ones are added at a distance from the previous. From y = -256 to 192 nodes below, where the caverns taper at their upper limit, they will have a slightly different shape as the taper is now linear.
132 lines
3.4 KiB
C++
132 lines
3.4 KiB
C++
/*
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Minetest
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Copyright (C) 2016-2018 Duane Robertson <duane@duanerobertson.com>
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Copyright (C) 2016-2018 paramat
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Based on Valleys Mapgen by Gael de Sailly
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(https://forum.minetest.net/viewtopic.php?f=9&t=11430)
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and mapgen_v7 by kwolekr and paramat.
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Licensing changed by permission of Gael de Sailly.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#pragma once
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#include "mapgen.h"
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////////////// Mapgen Valleys flags
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#define MGVALLEYS_ALT_CHILL 0x01
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#define MGVALLEYS_HUMID_RIVERS 0x02
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// Feed only one variable into these.
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#define MYSQUARE(x) (x) * (x)
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#define MYCUBE(x) (x) * (x) * (x)
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class BiomeManager;
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class BiomeGenOriginal;
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// Global profiler
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//class Profiler;
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//extern Profiler *mapgen_profiler;
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struct MapgenValleysParams : public MapgenParams {
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u32 spflags = MGVALLEYS_HUMID_RIVERS | MGVALLEYS_ALT_CHILL;
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u16 altitude_chill = 90; // The altitude at which temperature drops by 20C.
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u16 river_depth = 4; // How deep to carve river channels.
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u16 river_size = 5; // How wide to make rivers.
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float cave_width = 0.09f;
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s16 large_cave_depth = -33;
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s16 lava_depth = 1;
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s16 cavern_limit = -256;
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s16 cavern_taper = 192;
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float cavern_threshold = 0.6f;
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s16 dungeon_ymin = -31000;
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s16 dungeon_ymax = 63; // No higher than surface mapchunks
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NoiseParams np_filler_depth;
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NoiseParams np_inter_valley_fill;
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NoiseParams np_inter_valley_slope;
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NoiseParams np_rivers;
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NoiseParams np_terrain_height;
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NoiseParams np_valley_depth;
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NoiseParams np_valley_profile;
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NoiseParams np_cave1;
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NoiseParams np_cave2;
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NoiseParams np_cavern;
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MapgenValleysParams();
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~MapgenValleysParams() = default;
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void readParams(const Settings *settings);
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void writeParams(Settings *settings) const;
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};
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struct TerrainNoise {
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s16 x;
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s16 z;
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float terrain_height;
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float *rivers;
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float *valley;
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float valley_profile;
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float *slope;
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float inter_valley_fill;
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};
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class MapgenValleys : public MapgenBasic {
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public:
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MapgenValleys(int mapgenid, MapgenValleysParams *params, EmergeManager *emerge);
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~MapgenValleys();
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virtual MapgenType getType() const { return MAPGEN_VALLEYS; }
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virtual void makeChunk(BlockMakeData *data);
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int getSpawnLevelAtPoint(v2s16 p);
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private:
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BiomeGenOriginal *m_bgen;
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float altitude_chill;
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bool humid_rivers;
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bool use_altitude_chill;
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float humidity_adjust;
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float river_depth_bed;
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float river_size_factor;
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s16 large_cave_depth;
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s16 dungeon_ymin;
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s16 dungeon_ymax;
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Noise *noise_inter_valley_fill;
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Noise *noise_inter_valley_slope;
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Noise *noise_rivers;
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Noise *noise_terrain_height;
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Noise *noise_valley_depth;
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Noise *noise_valley_profile;
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float terrainLevelAtPoint(s16 x, s16 z);
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void calculateNoise();
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virtual int generateTerrain();
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float terrainLevelFromNoise(TerrainNoise *tn);
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float adjustedTerrainLevelFromNoise(TerrainNoise *tn);
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};
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