mapgen_valleys.h

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/*
Luanti
SPDX-License-Identifier: LGPL-2.1-or-later
Copyright (C) 2016-2019 Duane Robertson <duane@duanerobertson.com>
Copyright (C) 2016-2019 paramat
 
Based on Valleys Mapgen by Gael de Sailly
(https://forum.luanti.org/viewtopic.php?f=9&t=11430)
and mapgen_v7, mapgen_flat by kwolekr and paramat.
 
Licensing changed by permission of Gael de Sailly.
*/
 
 
#pragma once
 
#include "mapgen.h"
 
#define MGVALLEYS_ALT_CHILL        0x01
#define MGVALLEYS_HUMID_RIVERS     0x02
#define MGVALLEYS_VARY_RIVER_DEPTH 0x04
#define MGVALLEYS_ALT_DRY          0x08
 
class BiomeGenOriginal;
 
extern const FlagDesc flagdesc_mapgen_valleys[];
 
 
struct MapgenValleysParams : public MapgenParams {
        u16 altitude_chill = 90;
        u16 river_depth = 4;
        u16 river_size = 5;
 
        float cave_width = 0.09f;
        s16 large_cave_depth = -33;
        u16 small_cave_num_min = 0;
        u16 small_cave_num_max = 0;
        u16 large_cave_num_min = 0;
        u16 large_cave_num_max = 2;
        float large_cave_flooded = 0.5f;
        s16 cavern_limit = -256;
        s16 cavern_taper = 192;
        float cavern_threshold = 0.6f;
        s16 dungeon_ymin = -31000;
        s16 dungeon_ymax = 63;
 
        NoiseParams np_filler_depth;
        NoiseParams np_inter_valley_fill;
        NoiseParams np_inter_valley_slope;
        NoiseParams np_rivers;
        NoiseParams np_terrain_height;
        NoiseParams np_valley_depth;
        NoiseParams np_valley_profile;
 
        NoiseParams np_cave1;
        NoiseParams np_cave2;
        NoiseParams np_cavern;
        NoiseParams np_dungeons;
 
        MapgenValleysParams();
        ~MapgenValleysParams() = default;
 
        void readParams(const Settings *settings);
        void writeParams(Settings *settings) const;
        void setDefaultSettings(Settings *settings);
};
 
 
class MapgenValleys : public MapgenBasic {
public:
 
        MapgenValleys(MapgenValleysParams *params,
                EmergeParams *emerge);
        ~MapgenValleys();
 
        virtual MapgenType getType() const { return MAPGEN_VALLEYS; }
 
        virtual void makeChunk(BlockMakeData *data);
        int getSpawnLevelAtPoint(v2s16 p);
 
private:
        BiomeGenOriginal *m_bgen = nullptr;
 
        float altitude_chill;
        float river_depth_bed;
        float river_size_factor;
 
        Noise *noise_inter_valley_fill = nullptr;
        Noise *noise_inter_valley_slope = nullptr;
        Noise *noise_rivers = nullptr;
        Noise *noise_terrain_height = nullptr;
        Noise *noise_valley_depth = nullptr;
        Noise *noise_valley_profile = nullptr;
 
        virtual int generateTerrain();
};