minetest/src/mapgen_indev.h

/*
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
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 MAPGENINDEV_HEADER
#define MAPGENINDEV_HEADER

#include "mapgen.h"
#include "mapgen_v6.h"
#include "cavegen.h"

float farscale(float scale, float z);
float farscale(float scale, float x, float z);
float farscale(float scale, float x, float y, float z);

struct NoiseIndevParams : public NoiseParams {
	float farscale;
	float farspread;

	NoiseIndevParams() {}
	NoiseIndevParams(float offset_, float scale_, v3f spread_,
					 int seed_, int octaves_, float persist_,
					  float farscale_ = 1, float farspread_ = 1)
	{
		offset  = offset_;
		scale   = scale_;
		spread  = spread_;
		seed    = seed_;
		octaves = octaves_;
		persist = persist_;

		farscale  = farscale_;
		farspread = farspread_;
	}
	
	~NoiseIndevParams() {}
};

#define getNoiseIndevParams(x, y) getStruct((x), "f,f,v3,s32,s32,f,f,f", &(y), sizeof(y))
#define setNoiseIndevParams(x, y) setStruct((x), "f,f,v3,s32,s32,f,f,f", &(y))

class NoiseIndev : public Noise {
public:
	NoiseIndevParams *npindev;

	virtual ~NoiseIndev() {};
	NoiseIndev(NoiseIndevParams *np, int seed, int sx, int sy);
	NoiseIndev(NoiseIndevParams *np, int seed, int sx, int sy, int sz);
	void init(NoiseIndevParams *np, int seed, int sx, int sy, int sz);
	void transformNoiseMapFarScale(float xx = 0, float yy = 0, float zz = 0);
};

extern NoiseIndevParams nparams_indev_def;
/*
extern NoiseIndevParams nparams_indev_def_terrain_base;
extern NoiseIndevParams nparams_indev_def_terrain_higher;
extern NoiseIndevParams nparams_indev_def_steepness;
//extern NoiseIndevParams nparams_indev_def_height_select;
//extern NoiseIndevParams nparams_indev_def_trees;
extern NoiseIndevParams nparams_indev_def_mud;
//extern NoiseIndevParams nparams_indev_def_beach;
extern NoiseIndevParams nparams_indev_def_biome;
//extern NoiseIndevParams nparams_indev_def_cave;
extern NoiseIndevParams nparams_indev_def_float_islands;
*/

struct MapgenIndevParams : public MapgenV6Params {
	NoiseIndevParams npindev_terrain_base;
	NoiseIndevParams npindev_terrain_higher;
	NoiseIndevParams npindev_steepness;
	//NoiseParams *np_height_select;
	//NoiseParams *np_trees;
	NoiseIndevParams npindev_mud;
	//NoiseParams *np_beach;
	NoiseIndevParams npindev_biome;
	//NoiseParams *np_cave;
	NoiseIndevParams npindev_float_islands1;
	NoiseIndevParams npindev_float_islands2;
	NoiseIndevParams npindev_float_islands3;

	MapgenIndevParams() {
		//freq_desert       = 0.45;
		//freq_beach        = 0.15;
		npindev_terrain_base   = nparams_indev_def; //&nparams_indev_def_terrain_base;
		npindev_terrain_higher = nparams_indev_def; //&nparams_indev_def_terrain_higher;
		npindev_steepness      = nparams_indev_def; //&nparams_indev_def_steepness;
		//np_height_select  = &nparams_v6_def_height_select;
		//np_trees          = &nparams_v6_def_trees;
		npindev_mud            = nparams_indev_def; //&nparams_indev_def_mud;
		//np_beach          = &nparams_v6_def_beach;
		npindev_biome          = nparams_indev_def; //&nparams_indev_def_biome;
		//np_cave           = &nparams_v6_def_cave;
		npindev_float_islands1  = nparams_indev_def; //&nparams_indev_def_float_islands;
		npindev_float_islands2  = nparams_indev_def; //&nparams_indev_def_float_islands;
		npindev_float_islands3  = nparams_indev_def; //&nparams_indev_def_float_islands;

	}

	bool readParams(Settings *settings);
	void writeParams(Settings *settings);
};

class MapgenIndev : public MapgenV6 {
    public:
	NoiseIndev *noiseindev_terrain_base;
	NoiseIndev *noiseindev_terrain_higher;
	NoiseIndev *noiseindev_steepness;
	//NoiseIndev *noise_height_select;
	//NoiseIndev *noise_trees;
	NoiseIndev *noiseindev_mud;
	//NoiseIndev *noise_beach;
	NoiseIndev *noiseindev_biome;
	//NoiseIndevParams *np_cave;
	NoiseIndev *noiseindev_float_islands1;
	NoiseIndev *noiseindev_float_islands2;
	NoiseIndev *noiseindev_float_islands3;

	MapgenIndev(int mapgenid, MapgenIndevParams *params, EmergeManager *emerge);
	~MapgenIndev();
	void calculateNoise();

	float baseTerrainLevelFromNoise(v2s16 p);
	float baseTerrainLevelFromMap(int index);
	float getMudAmount(int index);
	void generateCaves(int max_stone_y);
	//void defineCave(Cave & cave, PseudoRandom ps, v3s16 node_min, bool large_cave);
	void generateExperimental();
	
	void generateFloatIslands(int min_y);
};

struct MapgenFactoryIndev : public MapgenFactoryV6 {
	Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge) {
		return new MapgenIndev(mgid, (MapgenIndevParams *)params, emerge);
	};

	MapgenParams *createMapgenParams() {
		return new MapgenIndevParams();
	};
};

class CaveIndev : public CaveV6 {
public:
	CaveIndev(MapgenIndev *mg, PseudoRandom *ps, PseudoRandom *ps2,
			v3s16 node_min, bool is_large_cave);
};

#endif