3 Copyright (C) 2016-2018 Duane Robertson <duane@duanerobertson.com>
4 Copyright (C) 2016-2018 paramat
6 Based on Valleys Mapgen by Gael de Sailly
7 (https://forum.minetest.net/viewtopic.php?f=9&t=11430)
8 and mapgen_v7 by kwolekr and paramat.
10 Licensing changed by permission of Gael de Sailly.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU Lesser General Public License as published by
14 the Free Software Foundation; either version 2.1 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU Lesser General Public License for more details.
22 You should have received a copy of the GNU Lesser General Public License along
23 with this program; if not, write to the Free Software Foundation, Inc.,
24 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
31 ////////////// Mapgen Valleys flags
32 #define MGVALLEYS_ALT_CHILL 0x01
33 #define MGVALLEYS_HUMID_RIVERS 0x02
35 // Feed only one variable into these
36 #define MYSQUARE(x) (x) * (x)
37 #define MYCUBE(x) (x) * (x) * (x)
40 class BiomeGenOriginal;
43 struct MapgenValleysParams : public MapgenParams {
44 u32 spflags = MGVALLEYS_HUMID_RIVERS | MGVALLEYS_ALT_CHILL;
45 u16 altitude_chill = 90; // The altitude at which temperature drops by 20C
46 u16 river_depth = 4; // How deep to carve river channels
47 u16 river_size = 5; // How wide to make rivers
49 float cave_width = 0.09f;
50 s16 large_cave_depth = -33;
52 s16 cavern_limit = -256;
53 s16 cavern_taper = 192;
54 float cavern_threshold = 0.6f;
55 s16 dungeon_ymin = -31000;
56 s16 dungeon_ymax = 63; // No higher than surface mapchunks
58 NoiseParams np_filler_depth;
59 NoiseParams np_inter_valley_fill;
60 NoiseParams np_inter_valley_slope;
61 NoiseParams np_rivers;
62 NoiseParams np_terrain_height;
63 NoiseParams np_valley_depth;
64 NoiseParams np_valley_profile;
68 NoiseParams np_cavern;
70 MapgenValleysParams();
71 ~MapgenValleysParams() = default;
73 void readParams(const Settings *settings);
74 void writeParams(Settings *settings) const;
85 float inter_valley_fill;
88 class MapgenValleys : public MapgenBasic {
91 MapgenValleys(int mapgenid, MapgenValleysParams *params, EmergeManager *emerge);
94 virtual MapgenType getType() const { return MAPGEN_VALLEYS; }
96 virtual void makeChunk(BlockMakeData *data);
97 int getSpawnLevelAtPoint(v2s16 p);
100 BiomeGenOriginal *m_bgen;
102 float altitude_chill;
104 bool use_altitude_chill;
105 float humidity_adjust;
106 float river_depth_bed;
107 float river_size_factor;
109 s16 large_cave_depth;
113 Noise *noise_inter_valley_fill;
114 Noise *noise_inter_valley_slope;
116 Noise *noise_terrain_height;
117 Noise *noise_valley_depth;
118 Noise *noise_valley_profile;
120 float terrainLevelAtPoint(s16 x, s16 z);
121 void calculateNoise();
122 virtual int generateTerrain();
123 float terrainLevelFromNoise(TerrainNoise *tn);
124 float adjustedTerrainLevelFromNoise(TerrainNoise *tn);