/*
Minetest
-Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
-Additional development and fractal code by paramat
+Copyright (C) 2010-2015 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2010-2015 paramat, Matt Gregory
+
+Fractal formulas from http://www.bugman123.com/Hypercomplex/index.html
+by Paul Nylander, and from http://www.fractalforums.com, thank you.
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
#include "mapgen.h"
-/////////////////// Mapgen Fractal flags
-#define MGFRACTAL_JULIA 0x01
+#define MGFRACTAL_LARGE_CAVE_DEPTH -33
class BiomeManager;
extern FlagDesc flagdesc_mapgen_fractal[];
-
-struct MapgenFractalParams : public MapgenSpecificParams {
+struct MapgenFractalParams : public MapgenParams
+{
u32 spflags;
-
+ float cave_width;
+ u16 fractal;
u16 iterations;
- float scale_x;
- float scale_y;
- float scale_z;
- float offset_x;
- float offset_y;
- float offset_z;
+ v3f scale;
+ v3f offset;
float slice_w;
float julia_x;
float julia_y;
float julia_z;
float julia_w;
-
+ NoiseParams np_seabed;
+ NoiseParams np_filler_depth;
NoiseParams np_cave1;
NoiseParams np_cave2;
void writeParams(Settings *settings) const;
};
-class MapgenFractal : public Mapgen {
+class MapgenFractal : public MapgenBasic
+{
public:
- EmergeManager *m_emerge;
- BiomeManager *bmgr;
+ MapgenFractal(int mapgenid, MapgenFractalParams *params, EmergeManager *emerge);
+ ~MapgenFractal();
- int ystride;
- int zstride;
- u32 spflags;
+ virtual MapgenType getType() const { return MAPGEN_FRACTAL; }
- v3s16 node_min;
- v3s16 node_max;
- v3s16 full_node_min;
- v3s16 full_node_max;
+ virtual void makeChunk(BlockMakeData *data);
+ int getSpawnLevelAtPoint(v2s16 p);
+ bool getFractalAtPoint(s16 x, s16 y, s16 z);
+ s16 generateTerrain();
+
+private:
+ u16 formula;
+ bool julia;
+ u16 fractal;
u16 iterations;
- float scale_x;
- float scale_y;
- float scale_z;
- float offset_x;
- float offset_y;
- float offset_z;
+ v3f scale;
+ v3f offset;
float slice_w;
float julia_x;
float julia_y;
float julia_z;
float julia_w;
-
- Noise *noise_cave1;
- Noise *noise_cave2;
-
- Noise *noise_heat;
- Noise *noise_humidity;
- Noise *noise_heat_blend;
- Noise *noise_humidity_blend;
-
- content_t c_stone;
- content_t c_water_source;
- content_t c_lava_source;
- content_t c_desert_stone;
- content_t c_ice;
- content_t c_sandstone;
-
- content_t c_cobble;
- content_t c_stair_cobble;
- content_t c_mossycobble;
- content_t c_sandstonebrick;
- content_t c_stair_sandstonebrick;
-
- MapgenFractal(int mapgenid, MapgenParams *params, EmergeManager *emerge);
- ~MapgenFractal();
-
- virtual void makeChunk(BlockMakeData *data);
- int getGroundLevelAtPoint(v2s16 p);
- void calculateNoise();
- bool getTerrainAtPoint(s16 x, s16 y, s16 z);
- s16 generateTerrain();
- MgStoneType generateBiomes(float *heat_map, float *humidity_map);
- void dustTopNodes();
- void generateCaves(s16 max_stone_y);
-};
-
-struct MapgenFactoryFractal : public MapgenFactory {
- Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge)
- {
- return new MapgenFractal(mgid, params, emerge);
- };
-
- MapgenSpecificParams *createMapgenParams()
- {
- return new MapgenFractalParams();
- };
+ Noise *noise_seabed;
};
#endif