forked from Mirrorlandia_minetest/minetest
bc9bb63aed
Add 2 new mapgen flags to make river depth variation and humidity drop with altitude independently optional, instead of both being enabled by the 'humid rivers' flag. Simplify and clarify related code by removing a low priority optimisation regarding 't_heat'. Remove unnecessary optimisation bools and use spflags directly instead. Improve and fix documentation in settingtypes.txt. A few minor code cleanups.
130 lines
3.3 KiB
C++
130 lines
3.3 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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#define MGVALLEYS_VARY_RIVER_DEPTH 0x04
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#define MGVALLEYS_ALT_DRY 0x08
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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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extern FlagDesc flagdesc_mapgen_valleys[];
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struct MapgenValleysParams : public MapgenParams {
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u32 spflags = MGVALLEYS_ALT_CHILL | MGVALLEYS_HUMID_RIVERS |
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MGVALLEYS_VARY_RIVER_DEPTH | MGVALLEYS_ALT_DRY;
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u16 altitude_chill = 90;
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u16 river_depth = 4;
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u16 river_size = 5;
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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;
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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,
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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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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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