src/mapgen_v6.h

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 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 "mapgen.h"
  24
  25 #define AVERAGE_MUD_AMOUNT 4
  26
  27 enum BiomeType
  28 {
  29         BT_NORMAL,
  30         BT_DESERT
  31 };
  32
  33 extern NoiseParams nparams_v6_def_terrain_base;
  34 extern NoiseParams nparams_v6_def_terrain_higher;
  35 extern NoiseParams nparams_v6_def_steepness;
  36 extern NoiseParams nparams_v6_def_height_select;
  37 extern NoiseParams nparams_v6_def_trees;
  38 extern NoiseParams nparams_v6_def_mud;
  39 extern NoiseParams nparams_v6_def_beach;
  40 extern NoiseParams nparams_v6_def_biome;
  41 extern NoiseParams nparams_v6_def_cave;
  42
  43 struct MapgenV6Params : public MapgenParams {
  44         float freq_desert;
  45         float freq_beach;
  46         NoiseParams *np_terrain_base;
  47         NoiseParams *np_terrain_higher;
  48         NoiseParams *np_steepness;
  49         NoiseParams *np_height_select;
  50         NoiseParams *np_trees;
  51         NoiseParams *np_mud;
  52         NoiseParams *np_beach;
  53         NoiseParams *np_biome;
  54         NoiseParams *np_cave;
  55
  56         MapgenV6Params() {
  57                 freq_desert       = 0.45;
  58                 freq_beach        = 0.15;
  59                 np_terrain_base   = &nparams_v6_def_terrain_base;
  60                 np_terrain_higher = &nparams_v6_def_terrain_higher;
  61                 np_steepness      = &nparams_v6_def_steepness;
  62                 np_height_select  = &nparams_v6_def_height_select;
  63                 np_trees          = &nparams_v6_def_trees;
  64                 np_mud            = &nparams_v6_def_mud;
  65                 np_beach          = &nparams_v6_def_beach;
  66                 np_biome          = &nparams_v6_def_biome;
  67                 np_cave           = &nparams_v6_def_cave;
  68         }
  69
  70         bool readParams(Settings *settings);
  71         void writeParams(Settings *settings);
  72 };
  73
  74 class MapgenV6 : public Mapgen {
  75 public:
  76         //ManualMapVoxelManipulator &vmanip;
  77
  78         int ystride;
  79         v3s16 csize;
  80
  81         v3s16 node_min;
  82         v3s16 node_max;
  83
  84         Noise *noise_terrain_base;
  85         Noise *noise_terrain_higher;
  86         Noise *noise_steepness;
  87         Noise *noise_height_select;
  88         Noise *noise_trees;
  89         Noise *noise_mud;
  90         Noise *noise_beach;
  91         Noise *noise_biome;
  92
  93         float *map_terrain_base;
  94         float *map_terrain_higher;
  95         float *map_steepness;
  96         float *map_height_select;
  97         float *map_trees;
  98         float *map_mud;
  99         float *map_beach;
 100         float *map_biome;
 101
 102         NoiseParams *np_cave;
 103
 104         u32 flags;
 105         float freq_desert;
 106         float freq_beach;
 107
 108         MapgenV6(int mapgenid, MapgenV6Params *params);
 109         ~MapgenV6();
 110
 111         void makeChunk(BlockMakeData *data);
 112         int getGroundLevelAtPoint(v2s16 p);
 113
 114         double baseRockLevelFromNoise(v2s16 p);
 115         static s16 find_ground_level(VoxelManipulator &vmanip,
 116                                                                  v2s16 p2d, INodeDefManager *ndef);
 117         static s16 find_stone_level(VoxelManipulator &vmanip,
 118                                                                  v2s16 p2d, INodeDefManager *ndef);
 119         void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
 120                                          bool is_apple_tree, INodeDefManager *ndef);
 121         double tree_amount_2d(u64 seed, v2s16 p);
 122         bool block_is_underground(u64 seed, v3s16 blockpos);
 123         double base_rock_level_2d(u64 seed, v2s16 p);
 124         s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
 125         double get_mud_add_amount(u64 seed, v2s16 p);
 126         bool get_have_beach(u64 seed, v2s16 p2d);
 127         BiomeType get_biome(u64 seed, v2s16 p2d);
 128         u32 get_blockseed(u64 seed, v3s16 p);
 129 };
 130
 131 struct MapgenFactoryV6 : public MapgenFactory {
 132         Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge) {
 133                 return new MapgenV6(mgid, (MapgenV6Params *)params);
 134         };
 135
 136         MapgenParams *createMapgenParams() {
 137                 return new MapgenV6Params();
 138         };
 139 };
 140
 141 #endif