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/*
Minetest
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
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MAPGEN_FRACTAL_HEADER
#define MAPGEN_FRACTAL_HEADER
#include "mapgen.h"
#define MGFRACTAL_LARGE_CAVE_DEPTH -33
class BiomeManager;
extern FlagDesc flagdesc_mapgen_fractal[];
struct MapgenFractalParams : public MapgenSpecificParams {
u32 spflags;
float cave_width;
u16 fractal;
u16 iterations;
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;
MapgenFractalParams();
~MapgenFractalParams() {}
void readParams(const Settings *settings);
void writeParams(Settings *settings) const;
};
class MapgenFractal : public Mapgen {
public:
EmergeManager *m_emerge;
BiomeManager *bmgr;
int ystride;
int zstride_1d;
u16 formula;
bool julia;
v3s16 node_min;
v3s16 node_max;
v3s16 full_node_min;
v3s16 full_node_max;
u32 spflags;
float cave_width;
u16 fractal;
u16 iterations;
v3f scale;
v3f offset;
float slice_w;
float julia_x;
float julia_y;
float julia_z;
float julia_w;
Noise *noise_seabed;
Noise *noise_filler_depth;
Noise *noise_cave1;
Noise *noise_cave2;
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 getSpawnLevelAtPoint(v2s16 p);
void calculateNoise();
bool getFractalAtPoint(s16 x, s16 y, s16 z);
s16 generateTerrain();
MgStoneType generateBiomes();
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();
};
};
#endif
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