Add sqlite3 backend hack for android
[oweals/minetest.git] / src / mapgen.h
index 81de0d176514ce778e818aa1ea3b984ec340cd1e..3c897e02315a58c58b3ea5d42d2e4d826070fb22 100644 (file)
@@ -1,6 +1,6 @@
 /*
-Minetest-c55
-Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
@@ -20,327 +20,316 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef MAPGEN_HEADER
 #define MAPGEN_HEADER
 
-#include "irrlichttypes_extrabloated.h"
+#include "irrlichttypes_bloated.h"
 #include "util/container.h" // UniqueQueue
 #include "gamedef.h"
+#include "nodedef.h"
 #include "mapnode.h"
 #include "noise.h"
+#include "settings.h"
+
+#define DEFAULT_MAPGEN "v6"
+
+/////////////////// Mapgen flags
+#define MG_TREES         0x01
+#define MG_CAVES         0x02
+#define MG_DUNGEONS      0x04
+#define MG_FLAT          0x08
+#define MG_LIGHT         0x10
+
+/////////////////// Ore generation flags
+// Use absolute value of height to determine ore placement
+#define OREFLAG_ABSHEIGHT 0x01
+// Use 3d noise to get density of ore placement, instead of just the position
+#define OREFLAG_DENSITY   0x02 // not yet implemented
+// For claylike ore types, place ore if the number of surrounding
+// nodes isn't the specified node
+#define OREFLAG_NODEISNT  0x04 // not yet implemented
+
+/////////////////// Decoration flags
+#define DECO_PLACE_CENTER_X 1
+#define DECO_PLACE_CENTER_Y 2
+#define DECO_PLACE_CENTER_Z 4
+
+#define ORE_RANGE_ACTUAL 1
+#define ORE_RANGE_MIRROR 2
+
+#define NUM_GEN_NOTIFY 6
+
+
+extern FlagDesc flagdesc_mapgen[];
+extern FlagDesc flagdesc_ore[];
+extern FlagDesc flagdesc_deco_schematic[];
+extern FlagDesc flagdesc_gennotify[];
 
 class BiomeDefManager;
 class Biome;
-
-//struct BlockMakeData;
+class EmergeManager;
 class MapBlock;
 class ManualMapVoxelManipulator;
 class VoxelManipulator;
-class INodeDefManager;
-
-
-enum BiomeType
-{
-       BT_NORMAL,
-       BT_DESERT
+struct BlockMakeData;
+class VoxelArea;
+class Map;
+
+
+enum MapgenObject {
+       MGOBJ_VMANIP,
+       MGOBJ_HEIGHTMAP,
+       MGOBJ_BIOMEMAP,
+       MGOBJ_HEATMAP,
+       MGOBJ_HUMIDMAP,
+       MGOBJ_GENNOTIFY
 };
 
+enum GenNotify {
+       GENNOTIFY_DUNGEON,
+       GENNOTIFY_TEMPLE,
+       GENNOTIFY_CAVE_BEGIN,
+       GENNOTIFY_CAVE_END,
+       GENNOTIFY_LARGECAVE_BEGIN,
+       GENNOTIFY_LARGECAVE_END
+};
 
-struct BlockMakeData {
-       bool no_op;
-       ManualMapVoxelManipulator *vmanip;
-       u64 seed;
-       v3s16 blockpos_min;
-       v3s16 blockpos_max;
-       v3s16 blockpos_requested;
-       UniqueQueue<v3s16> transforming_liquid;
-       INodeDefManager *nodedef;
-
-       BlockMakeData();
-       ~BlockMakeData();
+enum OreType {
+       ORE_SCATTER,
+       ORE_SHEET,
+       ORE_CLAYLIKE
 };
 
 
-/////////////////// Mapgen flags
-#define MG_TREES         0x01
-#define MG_CAVES         0x02
-#define MG_DUNGEONS      0x04
-#define MGV6_FORESTS     0x08
-#define MGV6_BIOME_BLEND 0x10
-
-#define AVERAGE_MUD_AMOUNT 4
-
-/////////////////// Mapgen V6 perlin noise default values
-NoiseParams nparams_v6_def_terrain_base =
-       {-AVERAGE_MUD_AMOUNT, 20.0, v3f(250.0, 250.0, 250.0), 82341, 5, 0.6};
-NoiseParams nparams_v6_def_terrain_higher =
-       {20.0, 16.0, v3f(500.0, 500.0, 500.0), 85309, 5, 0.6};
-NoiseParams nparams_v6_def_steepness =
-       {0.85, 0.5, v3f(125.0, 125.0, 125.0), -932, 5, 0.7};
-NoiseParams nparams_v6_def_height_select =
-       {0.5, 1.0, v3f(250.0, 250.0, 250.0), 4213, 5, 0.69};
-NoiseParams nparams_v6_def_trees =
-       {0.0, 1.0, v3f(125.0, 125.0, 125.0), 2, 4, 0.66};
-NoiseParams nparams_v6_def_mud =
-       {AVERAGE_MUD_AMOUNT, 2.0, v3f(200.0, 200.0, 200.0), 91013, 3, 0.55};
-NoiseParams nparams_v6_def_beach =
-       {0.0, 1.0, v3f(250.0, 250.0, 250.0), 59420, 3, 0.50};
-NoiseParams nparams_v6_def_biome =
-       {0.0, 1.0, v3f(250.0, 250.0, 250.0), 9130, 3, 0.50};
-NoiseParams nparams_v6_def_cave =
-       {6.0, 6.0, v3f(250.0, 250.0, 250.0), 34329, 3, 0.50};
-
-/////////////////// Mapgen V7 perlin noise default values
-NoiseParams nparams_v7_def_terrain =
-       {10.0, 12.0, v3f(350., 350., 350.), 82341, 5, 0.6}; //terrain
-NoiseParams nparams_v7_def_bgroup =
-       {0.5, 1/(2*1.6), v3f(350., 350., 350.), 5923, 2, 0.60}; //0 to 1
-NoiseParams nparams_v7_def_heat =
-       {25.0, 50.0, v3f(500., 500., 500.), 35293, 1, 0.00}; //-25 to 75
-NoiseParams nparams_v7_def_humidity =
-       {50, 100/(2*1.6), v3f(750., 750., 750.), 12094, 2, 0.60}; //0 to 100
+struct MapgenSpecificParams {
+       virtual void readParams(Settings *settings) = 0;
+       virtual void writeParams(Settings *settings) = 0;
+       virtual ~MapgenSpecificParams() {}
+};
 
 struct MapgenParams {
-       int seed;
-       int water_level;
+       std::string mg_name;
        int chunksize;
+       u64 seed;
+       int water_level;
        u32 flags;
 
+       MapgenSpecificParams *sparams;
+
        MapgenParams() {
+               mg_name     = DEFAULT_MAPGEN;
                seed        = 0;
                water_level = 1;
                chunksize   = 5;
-               flags       = MG_TREES | MG_CAVES | MGV6_BIOME_BLEND;
-       }
-
-};
-
-struct MapgenV6Params : public MapgenParams {
-       float freq_desert;
-       float freq_beach;
-       NoiseParams *np_terrain_base;
-       NoiseParams *np_terrain_higher;
-       NoiseParams *np_steepness;
-       NoiseParams *np_height_select;
-       NoiseParams *np_trees;
-       NoiseParams *np_mud;
-       NoiseParams *np_beach;
-       NoiseParams *np_biome;
-       NoiseParams *np_cave;
-
-       MapgenV6Params() {
-               freq_desert       = 0.45;
-               freq_beach        = 0.15;
-               np_terrain_base   = &nparams_v6_def_terrain_base;
-               np_terrain_higher = &nparams_v6_def_terrain_higher;
-               np_steepness      = &nparams_v6_def_steepness;
-               np_height_select  = &nparams_v6_def_height_select;
-               np_trees          = &nparams_v6_def_trees;
-               np_mud            = &nparams_v6_def_mud;
-               np_beach          = &nparams_v6_def_beach;
-               np_biome          = &nparams_v6_def_biome;
-               np_cave           = &nparams_v6_def_cave;
+               flags       = MG_TREES | MG_CAVES | MG_LIGHT;
+               sparams     = NULL;
        }
 };
 
-struct MapgenV7Params : public MapgenParams {
-       NoiseParams *np_terrain;
-       NoiseParams *np_bgroup;
-       NoiseParams *np_heat;
-       NoiseParams *np_humidity;
-
-       MapgenV7Params() {
-               np_terrain  = &nparams_v7_def_terrain;
-               np_bgroup   = &nparams_v7_def_bgroup;
-               np_heat     = &nparams_v7_def_heat;
-               np_humidity = &nparams_v7_def_humidity;
-       }
-};
-
-
 class Mapgen {
 public:
        int seed;
        int water_level;
        bool generating;
        int id;
+       ManualMapVoxelManipulator *vm;
+       INodeDefManager *ndef;
 
-       virtual void makeChunk(BlockMakeData *data) {};
+       s16 *heightmap;
+       u8 *biomemap;
+       v3s16 csize;
 
-       //Legacy functions for Farmesh (pending removal)
-       static bool get_have_beach(u64 seed, v2s16 p2d);
-       static double tree_amount_2d(u64 seed, v2s16 p);
-       static s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
-};
+       u32 gennotify;
+       std::vector<v3s16> *gen_notifications[NUM_GEN_NOTIFY];
 
+       Mapgen();
+       virtual ~Mapgen();
 
-class MapgenV6 : public Mapgen {
-public:
-       //ManualMapVoxelManipulator &vmanip;
+       s16 findGroundLevelFull(v2s16 p2d);
+       s16 findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax);
+       void updateHeightmap(v3s16 nmin, v3s16 nmax);
+       void updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax);
+       void setLighting(v3s16 nmin, v3s16 nmax, u8 light);
+       void lightSpread(VoxelArea &a, v3s16 p, u8 light);
+       void calcLighting(v3s16 nmin, v3s16 nmax);
+       void calcLightingOld(v3s16 nmin, v3s16 nmax);
 
-       int ystride;
-       v3s16 csize;
-
-       v3s16 node_min;
-       v3s16 node_max;
-
-       Noise *noise_terrain_base;
-       Noise *noise_terrain_higher;
-       Noise *noise_steepness;
-       Noise *noise_height_select;
-       Noise *noise_trees;
-       Noise *noise_mud;
-       Noise *noise_beach;
-       Noise *noise_biome;
-       Noise *noise_cave;
-
-       float *map_terrain_base;
-       float *map_terrain_higher;
-       float *map_steepness;
-       float *map_height_select;
-       float *map_trees;
-       float *map_mud;
-       float *map_beach;
-       float *map_biome;
-       float *map_cave;
-
-       u32 flags;
-       float freq_desert;
-       float freq_beach;
-
-       MapgenV6(int mapgenid, MapgenV6Params *params);
-       ~MapgenV6();
-
-       void makeChunk(BlockMakeData *data);
-
-
-       static s16 find_ground_level(VoxelManipulator &vmanip, v2s16 p2d, INodeDefManager *ndef);
-       static s16 find_stone_level(VoxelManipulator &vmanip, v2s16 p2d, INodeDefManager *ndef);
-       void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0, bool is_apple_tree, INodeDefManager *ndef);
-       double tree_amount_2d(u64 seed, v2s16 p);
-       bool block_is_underground(u64 seed, v3s16 blockpos);
-       double base_rock_level_2d(u64 seed, v2s16 p);
-       s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
-       double get_mud_add_amount(u64 seed, v2s16 p);
-       bool get_have_beach(u64 seed, v2s16 p2d);
-       BiomeType get_biome(u64 seed, v2s16 p2d);
-       u32 get_blockseed(u64 seed, v3s16 p);
+       virtual void makeChunk(BlockMakeData *data) {}
+       virtual int getGroundLevelAtPoint(v2s16 p) { return 0; }
 };
 
+struct MapgenFactory {
+       virtual Mapgen *createMapgen(int mgid, MapgenParams *params,
+                                                                EmergeManager *emerge) = 0;
+       virtual MapgenSpecificParams *createMapgenParams() = 0;
+       virtual ~MapgenFactory() {}
+};
 
-class MapgenV7 : public Mapgen {
+class Ore {
 public:
-       BlockMakeData *data;
-       ManualMapVoxelManipulator *vmanip;
-       INodeDefManager *ndef;
-       BiomeDefManager *biomedef;
+       std::string ore_name;
+       std::vector<std::string> wherein_names;
+       content_t ore;
+       std::vector<content_t> wherein;  // the node to be replaced
+       u32 clust_scarcity; // ore cluster has a 1-in-clust_scarcity chance of appearing at a node
+       s16 clust_num_ores; // how many ore nodes are in a chunk
+       s16 clust_size;     // how large (in nodes) a chunk of ore is
+       s16 height_min;
+       s16 height_max;
+       u8 ore_param2;          // to set node-specific attributes
+       u32 flags;          // attributes for this ore
+       float nthresh;      // threshhold for noise at which an ore is placed
+       NoiseParams *np;    // noise for distribution of clusters (NULL for uniform scattering)
+       Noise *noise;
+
+       Ore() {
+               ore     = CONTENT_IGNORE;
+               np      = NULL;
+               noise   = NULL;
+       }
 
-       int ystride;
-       int zstride;
+       virtual ~Ore();
 
-       v3s16 csize;
+       void resolveNodeNames(INodeDefManager *ndef);
+       void placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+       virtual void generate(ManualMapVoxelManipulator *vm, int seed,
+                                               u32 blockseed, v3s16 nmin, v3s16 nmax) = 0;
+};
 
-       Noise *noise_terrain;
-       Noise *noise_bgroup;
-       Noise *noise_heat;
-       Noise *noise_humidity;
+class OreScatter : public Ore {
+       ~OreScatter() {}
+       virtual void generate(ManualMapVoxelManipulator *vm, int seed,
+                                               u32 blockseed, v3s16 nmin, v3s16 nmax);
+};
 
-       v3s16 node_min;
-       v3s16 node_max;
+class OreSheet : public Ore {
+       ~OreSheet() {}
+       virtual void generate(ManualMapVoxelManipulator *vm, int seed,
+                                               u32 blockseed, v3s16 nmin, v3s16 nmax);
+};
 
-       float *map_terrain;
-       float *map_bgroup;
-       float *map_heat;
-       float *map_humidity;
+Ore *createOre(OreType type);
 
-       bool generating;
-       int id;
-       u32 flags;
 
-/*
-       NoiseParams *np_terrain;
-       NoiseParams *np_bgroup;
-       NoiseParams *np_heat;
-       NoiseParams *np_humidity;*/
-
-       //should these be broken off into a "commonly used nodes" class?
-       MapNode n_air;
-       MapNode n_water;
-       MapNode n_lava;
-
-       MapgenV7(BiomeDefManager *biomedef, int mapgenid, MapgenV7Params *params);
-       ~MapgenV7();
-
-       void makeChunk(BlockMakeData *data);
-       void updateLiquid(v3s16 node_min, v3s16 node_max);
-       void updateLighting(v3s16 node_min, v3s16 node_max);
-
-       //Legacy functions for Farmesh (pending removal)
-//     static bool get_have_beach(u64 seed, v2s16 p2d);
-//     static double tree_amount_2d(u64 seed, v2s16 p);
-//     static s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
+enum DecorationType {
+       DECO_SIMPLE = 1,
+       DECO_SCHEMATIC,
+       DECO_LSYSTEM
 };
 
-class EmergeManager {
+#if 0
+struct CutoffData {
+       VoxelArea a;
+       Decoration *deco;
+       //v3s16 p;
+       //v3s16 size;
+       //s16 height;
+
+       CutoffData(s16 x, s16 y, s16 z, s16 h) {
+               p = v3s16(x, y, z);
+               height = h;
+       }
+};
+#endif
+
+class Decoration {
 public:
-       //settings
-       int mg_version;
-       MapgenParams *params;
+       INodeDefManager *ndef;
 
-       //mapgen objects here
-       Mapgen *mapgen;
+       int mapseed;
+       std::string place_on_name;
+       content_t c_place_on;
+       s16 sidelen;
+       float fill_ratio;
+       NoiseParams *np;
 
-       //biome manager
-       BiomeDefManager *biomedef;
+       std::set<u8> biomes;
+       //std::list<CutoffData> cutoffs;
+       //JMutex cutoff_mutex;
 
-       EmergeManager(IGameDef *gamedef, int mg_version=6);
-       ~EmergeManager();
+       Decoration();
+       virtual ~Decoration();
 
-       Mapgen *getMapgen();
-       void setMapgenParams();
-       void addBlockToQueue();
+       virtual void resolveNodeNames(INodeDefManager *ndef);
+       void placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+       void placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
 
-       //mapgen helper methods
-       Biome *getBiomeAtPoint(v3s16 p);
-       int getGroundLevelAtPoint(v2s16 p);
-       bool isBlockUnderground(v3s16 blockpos);
-       u32 getBlockSeed(v3s16 p);
+       virtual void generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) = 0;
+       virtual int getHeight() = 0;
+       virtual std::string getName() = 0;
 };
 
+class DecoSimple : public Decoration {
+public:
+       std::string deco_name;
+       std::string spawnby_name;
+       content_t c_deco;
+       content_t c_spawnby;
+       s16 deco_height;
+       s16 deco_height_max;
+       s16 nspawnby;
+
+       std::vector<std::string> decolist_names;
+       std::vector<content_t> c_decolist;
+
+       ~DecoSimple() {}
+
+       void resolveNodeNames(INodeDefManager *ndef);
+       virtual void generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p);
+       virtual int getHeight();
+       virtual std::string getName();
+};
 
-/*
-namespace mapgen
-{
-       // Finds precise ground level at any position
-       s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
+#define MTSCHEM_FILE_SIGNATURE 0x4d54534d // 'MTSM'
+#define MTSCHEM_FILE_VER_HIGHEST_READ  3
+#define MTSCHEM_FILE_VER_HIGHEST_WRITE 3
 
-       // Find out if block is completely underground
-       bool block_is_underground(u64 seed, v3s16 blockpos);
+#define MTSCHEM_PROB_NEVER  0x00
+#define MTSCHEM_PROB_ALWAYS 0xFF
 
-       // Get a pseudorandom seed for a position on the map
-       u32 get_blockseed(u64 seed, v3s16 p);
+class DecoSchematic : public Decoration {
+public:
+       std::string filename;
 
-       // Main map generation routine
-       void make_block(BlockMakeData *data);
+       std::vector<std::string> *node_names;
+       std::vector<content_t> c_nodes;
+       std::map<std::string, std::string> replacements;
 
+       u32 flags;
+       Rotation rotation;
+       v3s16 size;
+       MapNode *schematic;
+       u8 *slice_probs;
+
+       DecoSchematic();
+       ~DecoSchematic();
+
+       void resolveNodeNames(INodeDefManager *ndef);
+       virtual void generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p);
+       virtual int getHeight();
+       virtual std::string getName();
+
+       void blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
+                                       Rotation rot, bool force_placement);
+
+       bool loadSchematicFile();
+       void saveSchematicFile(INodeDefManager *ndef);
+
+       bool getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2);
+       void placeStructure(Map *map, v3s16 p, bool force_placement);
+       void applyProbabilities(v3s16 p0,
+               std::vector<std::pair<v3s16, u8> > *plist,
+               std::vector<std::pair<s16, u8> > *splist);
+};
 
-       //These are used by FarMesh
-       bool get_have_beach(u64 seed, v2s16 p2d);
-       double tree_amount_2d(u64 seed, v2s16 p);
+void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
+                                       std::vector<content_t> *usednodes);
 
-       struct BlockMakeData
-       {
-               bool no_op;
-               ManualMapVoxelManipulator *vmanip; // Destructor deletes
-               u64 seed;
-               v3s16 blockpos_min;
-               v3s16 blockpos_max;
-               v3s16 blockpos_requested;
-               UniqueQueue<v3s16> transforming_liquid;
-               INodeDefManager *nodedef;
+/*
+class DecoLSystem : public Decoration {
+public:
+       virtual void generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+};
+*/
 
-               BlockMakeData();
-               ~BlockMakeData();
-       };
+Decoration *createDecoration(DecorationType type);
 
-}; // namespace mapgen
-*/
 #endif