src/mapgen_v6.h

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef MAPGENV6_HEADER
  21 #define MAPGENV6_HEADER
  22
  23 #include "dungeongen.h"
  24 #include "mapgen.h"
  25
  26 #define AVERAGE_MUD_AMOUNT 4
  27
  28 enum BiomeType
  29 {
  30         BT_NORMAL,
  31         BT_DESERT
  32 };
  33
  34 extern NoiseParams nparams_v6_def_terrain_base;
  35 extern NoiseParams nparams_v6_def_terrain_higher;
  36 extern NoiseParams nparams_v6_def_steepness;
  37 extern NoiseParams nparams_v6_def_height_select;
  38 extern NoiseParams nparams_v6_def_trees;
  39 extern NoiseParams nparams_v6_def_mud;
  40 extern NoiseParams nparams_v6_def_beach;
  41 extern NoiseParams nparams_v6_def_biome;
  42 extern NoiseParams nparams_v6_def_cave;
  43
  44 struct MapgenV6Params : public MapgenParams {
  45         float freq_desert;
  46         float freq_beach;
  47         NoiseParams *np_terrain_base;
  48         NoiseParams *np_terrain_higher;
  49         NoiseParams *np_steepness;
  50         NoiseParams *np_height_select;
  51         NoiseParams *np_trees;
  52         NoiseParams *np_mud;
  53         NoiseParams *np_beach;
  54         NoiseParams *np_biome;
  55         NoiseParams *np_cave;
  56
  57         MapgenV6Params() {
  58                 freq_desert       = 0.45;
  59                 freq_beach        = 0.15;
  60                 np_terrain_base   = &nparams_v6_def_terrain_base;
  61                 np_terrain_higher = &nparams_v6_def_terrain_higher;
  62                 np_steepness      = &nparams_v6_def_steepness;
  63                 np_height_select  = &nparams_v6_def_height_select;
  64                 np_trees          = &nparams_v6_def_trees;
  65                 np_mud            = &nparams_v6_def_mud;
  66                 np_beach          = &nparams_v6_def_beach;
  67                 np_biome          = &nparams_v6_def_biome;
  68                 np_cave           = &nparams_v6_def_cave;
  69         }
  70
  71         bool readParams(Settings *settings);
  72         void writeParams(Settings *settings);
  73 };
  74
  75 class MapgenV6 : public Mapgen {
  76 public:
  77         //ManualMapVoxelManipulator &vmanip;
  78
  79         int ystride;
  80         v3s16 csize;
  81
  82         v3s16 node_min;
  83         v3s16 node_max;
  84
  85         Noise *noise_terrain_base;
  86         Noise *noise_terrain_higher;
  87         Noise *noise_steepness;
  88         Noise *noise_height_select;
  89         Noise *noise_trees;
  90         Noise *noise_mud;
  91         Noise *noise_beach;
  92         Noise *noise_biome;
  93
  94         float *map_terrain_base;
  95         float *map_terrain_higher;
  96         float *map_steepness;
  97         float *map_height_select;
  98         float *map_trees;
  99         float *map_mud;
 100         float *map_beach;
 101         float *map_biome;
 102
 103         NoiseParams *np_cave;
 104
 105         u32 flags;
 106         float freq_desert;
 107         float freq_beach;
 108
 109         MapgenV6(int mapgenid, MapgenV6Params *params);
 110         ~MapgenV6();
 111
 112         void makeChunk(BlockMakeData *data);
 113         int getGroundLevelAtPoint(v2s16 p);
 114
 115         double baseRockLevelFromNoise(v2s16 p);
 116         static s16 find_ground_level(VoxelManipulator &vmanip,
 117                                                                  v2s16 p2d, INodeDefManager *ndef);
 118         static s16 find_stone_level(VoxelManipulator &vmanip,
 119                                                                  v2s16 p2d, INodeDefManager *ndef);
 120         void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
 121                                          bool is_apple_tree, INodeDefManager *ndef);
 122         double tree_amount_2d(u64 seed, v2s16 p);
 123         bool block_is_underground(u64 seed, v3s16 blockpos);
 124         double base_rock_level_2d(u64 seed, v2s16 p);
 125         s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
 126         double get_mud_add_amount(u64 seed, v2s16 p);
 127         bool get_have_beach(u64 seed, v2s16 p2d);
 128         BiomeType get_biome(u64 seed, v2s16 p2d);
 129         u32 get_blockseed(u64 seed, v3s16 p);
 130 };
 131
 132 struct MapgenFactoryV6 : public MapgenFactory {
 133         Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge) {
 134                 return new MapgenV6(mgid, (MapgenV6Params *)params);
 135         };
 136
 137         MapgenParams *createMapgenParams() {
 138                 return new MapgenV6Params();
 139         };
 140 };
 141
 142 #endif