src/mapgen/mg_ore.h

   1 /*
   2 Minetest
   3 Copyright (C) 2015-2020 paramat
   4 Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU Lesser General Public License as published by
   8 the Free Software Foundation; either version 2.1 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU Lesser General Public License for more details.
  15
  16 You should have received a copy of the GNU Lesser General Public License along
  17 with this program; if not, write to the Free Software Foundation, Inc.,
  18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 */
  20
  21 #pragma once
  22
  23 #include <unordered_set>
  24 #include "objdef.h"
  25 #include "noise.h"
  26 #include "nodedef.h"
  27
  28 typedef u16 biome_t;  // copy from mg_biome.h to avoid an unnecessary include
  29
  30 class Noise;
  31 class Mapgen;
  32 class MMVManip;
  33
  34 /////////////////// Ore generation flags
  35
  36 #define OREFLAG_ABSHEIGHT     0x01 // Non-functional but kept to not break flags
  37 #define OREFLAG_PUFF_CLIFFS   0x02
  38 #define OREFLAG_PUFF_ADDITIVE 0x04
  39 #define OREFLAG_USE_NOISE     0x08
  40 #define OREFLAG_USE_NOISE2    0x10
  41
  42 enum OreType {
  43         ORE_SCATTER,
  44         ORE_SHEET,
  45         ORE_PUFF,
  46         ORE_BLOB,
  47         ORE_VEIN,
  48         ORE_STRATUM,
  49 };
  50
  51 extern FlagDesc flagdesc_ore[];
  52
  53 class Ore : public ObjDef, public NodeResolver {
  54 public:
  55         static const bool NEEDS_NOISE = false;
  56
  57         content_t c_ore;                  // the node to place
  58         std::vector<content_t> c_wherein; // the nodes to be placed in
  59         u32 clust_scarcity; // ore cluster has a 1-in-clust_scarcity chance of appearing at a node
  60         s16 clust_num_ores; // how many ore nodes are in a chunk
  61         s16 clust_size;     // how large (in nodes) a chunk of ore is
  62         s16 y_min;
  63         s16 y_max;
  64         u8 ore_param2;          // to set node-specific attributes
  65         u32 flags = 0;          // attributes for this ore
  66         float nthresh;      // threshold for noise at which an ore is placed
  67         NoiseParams np;     // noise for distribution of clusters (NULL for uniform scattering)
  68         Noise *noise = nullptr;
  69         std::unordered_set<biome_t> biomes;
  70
  71         Ore() = default;;
  72         virtual ~Ore();
  73
  74         virtual void resolveNodeNames();
  75
  76         size_t placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
  77         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
  78                 v3s16 nmin, v3s16 nmax, biome_t *biomemap) = 0;
  79
  80 protected:
  81         void cloneTo(Ore *def) const;
  82 };
  83
  84 class OreScatter : public Ore {
  85 public:
  86         static const bool NEEDS_NOISE = false;
  87
  88         ObjDef *clone() const;
  89
  90         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
  91                 v3s16 nmin, v3s16 nmax, biome_t *biomemap);
  92 };
  93
  94 class OreSheet : public Ore {
  95 public:
  96         static const bool NEEDS_NOISE = true;
  97
  98         ObjDef *clone() const;
  99
 100         u16 column_height_min;
 101         u16 column_height_max;
 102         float column_midpoint_factor;
 103
 104         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
 105                 v3s16 nmin, v3s16 nmax, biome_t *biomemap);
 106 };
 107
 108 class OrePuff : public Ore {
 109 public:
 110         static const bool NEEDS_NOISE = true;
 111
 112         ObjDef *clone() const;
 113
 114         NoiseParams np_puff_top;
 115         NoiseParams np_puff_bottom;
 116         Noise *noise_puff_top = nullptr;
 117         Noise *noise_puff_bottom = nullptr;
 118
 119         OrePuff() = default;
 120         virtual ~OrePuff();
 121
 122         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
 123                 v3s16 nmin, v3s16 nmax, biome_t *biomemap);
 124 };
 125
 126 class OreBlob : public Ore {
 127 public:
 128         static const bool NEEDS_NOISE = true;
 129
 130         ObjDef *clone() const;
 131
 132         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
 133                 v3s16 nmin, v3s16 nmax, biome_t *biomemap);
 134 };
 135
 136 class OreVein : public Ore {
 137 public:
 138         static const bool NEEDS_NOISE = true;
 139
 140         ObjDef *clone() const;
 141
 142         float random_factor;
 143         Noise *noise2 = nullptr;
 144         int sizey_prev = 0;
 145
 146         OreVein() = default;
 147         virtual ~OreVein();
 148
 149         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
 150                 v3s16 nmin, v3s16 nmax, biome_t *biomemap);
 151 };
 152
 153 class OreStratum : public Ore {
 154 public:
 155         static const bool NEEDS_NOISE = false;
 156
 157         ObjDef *clone() const;
 158
 159         NoiseParams np_stratum_thickness;
 160         Noise *noise_stratum_thickness = nullptr;
 161         u16 stratum_thickness;
 162
 163         OreStratum() = default;
 164         virtual ~OreStratum();
 165
 166         virtual void generate(MMVManip *vm, int mapseed, u32 blockseed,
 167                 v3s16 nmin, v3s16 nmax, biome_t *biomemap);
 168 };
 169
 170 class OreManager : public ObjDefManager {
 171 public:
 172         OreManager(IGameDef *gamedef);
 173         virtual ~OreManager() = default;
 174
 175         OreManager *clone() const;
 176
 177         const char *getObjectTitle() const
 178         {
 179                 return "ore";
 180         }
 181
 182         static Ore *create(OreType type)
 183         {
 184                 switch (type) {
 185                 case ORE_SCATTER:
 186                         return new OreScatter;
 187                 case ORE_SHEET:
 188                         return new OreSheet;
 189                 case ORE_PUFF:
 190                         return new OrePuff;
 191                 case ORE_BLOB:
 192                         return new OreBlob;
 193                 case ORE_VEIN:
 194                         return new OreVein;
 195                 case ORE_STRATUM:
 196                         return new OreStratum;
 197                 default:
 198                         return nullptr;
 199                 }
 200         }
 201
 202         void clear();
 203
 204         size_t placeAllOres(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
 205
 206 private:
 207         OreManager() {};
 208 };