mapgen_flat.h

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// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2015-2020 paramat
// Copyright (C) 2015-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
 
#pragma once
 
#include "mapgen.h"
 
#define MGFLAT_LAKES 0x01
#define MGFLAT_HILLS 0x02
#define MGFLAT_CAVERNS 0x04
 
 
extern const FlagDesc flagdesc_mapgen_flat[];
 
struct MapgenFlatParams : public MapgenParams
{
        s16 ground_level = 8;
        float lake_threshold = -0.45f;
        float lake_steepness = 48.0f;
        float hill_threshold = 0.45f;
        float hill_steepness = 64.0f;
 
        float cave_width = 0.09f;
        u16 small_cave_num_min = 0;
        u16 small_cave_num_max = 0;
        u16 large_cave_num_min = 0;
        u16 large_cave_num_max = 2;
        s16 large_cave_depth = -33;
        float large_cave_flooded = 0.5f;
        s16 cavern_limit = -256;
        s16 cavern_taper = 256;
        float cavern_threshold = 0.7f;
        s16 dungeon_ymin = -31000;
        s16 dungeon_ymax = 31000;
 
        NoiseParams np_terrain;
        NoiseParams np_filler_depth;
        NoiseParams np_cavern;
        NoiseParams np_cave1;
        NoiseParams np_cave2;
        NoiseParams np_dungeons;
 
        MapgenFlatParams();
        ~MapgenFlatParams() = default;
 
        void readParams(const Settings *settings);
        void writeParams(Settings *settings) const;
        void setDefaultSettings(Settings *settings);
};
 
class MapgenFlat : public MapgenBasic
{
public:
        MapgenFlat(MapgenFlatParams *params, EmergeParams *emerge);
        ~MapgenFlat();
 
        virtual MapgenType getType() const { return MAPGEN_FLAT; }
 
        virtual void makeChunk(BlockMakeData *data);
        int getSpawnLevelAtPoint(v2s16 p);
        s16 generateTerrain();
 
private:
        s16 ground_level;
        float lake_threshold;
        float lake_steepness;
        float hill_threshold;
        float hill_steepness;
 
        Noise *noise_terrain = nullptr;
};