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Mapgen Flat: Add caverns, disabled by default (#9913)

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Add the caverns used in V5, V7, Valleys, Carpathian.
Disabled by default to not be force-enabled in existing worlds.
This commit is contained in:
Paramat 2020-08-05 05:00:00 +01:00 committed by GitHub
parent 93ecc589bc
commit f92a393f6f
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 77 additions and 28 deletions
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1
builtin/mainmenu/dlg_create_world.lua
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@ -61,6 +61,7 @@ local flag_checkboxes = {
fgettext("Low humidity and high heat causes shallow or dry rivers") },
},
flat = {
cb_caverns,
{ "hills", fgettext("Hills"), "hills" },
{ "lakes", fgettext("Lakes"), "lakes" },
},

14
builtin/settingtypes.txt
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@ -1860,7 +1860,7 @@ mgcarpathian_np_dungeons (Dungeon noise) noise_params_3d 0.9, 0.5, (500, 500, 50
# Map generation attributes specific to Mapgen Flat.
# Occasional lakes and hills can be added to the flat world.
mgflat_spflags (Mapgen Flat specific flags) flags nolakes,nohills lakes,hills,nolakes,nohills
mgflat_spflags (Mapgen Flat specific flags) flags nolakes,nohills,nocaverns lakes,hills,caverns,nolakes,nohills,nocaverns
# Y of flat ground.
mgflat_ground_level (Ground level) int 8
@ -1904,6 +1904,15 @@ mgflat_hill_threshold (Hill threshold) float 0.45
# Controls steepness/height of hills.
mgflat_hill_steepness (Hill steepness) float 64.0
# Y-level of cavern upper limit.
mgflat_cavern_limit (Cavern limit) int -256
# Y-distance over which caverns expand to full size.
mgflat_cavern_taper (Cavern taper) int 256
# Defines full size of caverns, smaller values create larger caverns.
mgflat_cavern_threshold (Cavern threshold) float 0.7
# Lower Y limit of dungeons.
mgflat_dungeon_ymin (Dungeon minimum Y) int -31000
@ -1924,6 +1933,9 @@ mgflat_np_cave1 (Cave1 noise) noise_params_3d 0, 12, (61, 61, 61), 52534, 3, 0.5
# Second of two 3D noises that together define tunnels.
mgflat_np_cave2 (Cave2 noise) noise_params_3d 0, 12, (67, 67, 67), 10325, 3, 0.5, 2.0
# 3D noise defining giant caverns.
mgflat_np_cavern (Cavern noise) noise_params_3d 0, 1, (384, 128, 384), 723, 5, 0.63, 2.0
# 3D noise that determines number of dungeons per mapchunk.
mgflat_np_dungeons (Dungeon noise) noise_params_3d 0.9, 0.5, (500, 500, 500), 0, 2, 0.8, 2.0

50
src/mapgen/mapgen_flat.cpp
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@ -1,7 +1,7 @@
/*
Minetest
Copyright (C) 2015-2018 paramat
Copyright (C) 2015-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2015-2020 paramat
Copyright (C) 2015-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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
@ -41,6 +41,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
FlagDesc flagdesc_mapgen_flat[] = {
{"lakes", MGFLAT_LAKES},
{"hills", MGFLAT_HILLS},
{"caverns", MGFLAT_CAVERNS},
{NULL, 0}
};
@ -52,17 +53,21 @@ MapgenFlat::MapgenFlat(MapgenFlatParams *params, EmergeParams *emerge)
{
spflags = params->spflags;
ground_level = params->ground_level;
large_cave_depth = params->large_cave_depth;
small_cave_num_min = params->small_cave_num_min;
small_cave_num_max = params->small_cave_num_max;
large_cave_num_min = params->large_cave_num_min;
large_cave_num_max = params->large_cave_num_max;
large_cave_flooded = params->large_cave_flooded;
cave_width = params->cave_width;
lake_threshold = params->lake_threshold;
lake_steepness = params->lake_steepness;
hill_threshold = params->hill_threshold;
hill_steepness = params->hill_steepness;
cave_width = params->cave_width;
small_cave_num_min = params->small_cave_num_min;
small_cave_num_max = params->small_cave_num_max;
large_cave_num_min = params->large_cave_num_min;
large_cave_num_max = params->large_cave_num_max;
large_cave_depth = params->large_cave_depth;
large_cave_flooded = params->large_cave_flooded;
cavern_limit = params->cavern_limit;
cavern_taper = params->cavern_taper;
cavern_threshold = params->cavern_threshold;
dungeon_ymin = params->dungeon_ymin;
dungeon_ymax = params->dungeon_ymax;
@ -71,9 +76,11 @@ MapgenFlat::MapgenFlat(MapgenFlatParams *params, EmergeParams *emerge)
if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
noise_terrain = new Noise(&params->np_terrain, seed, csize.X, csize.Z);
// 3D noise
MapgenBasic::np_cave1 = params->np_cave1;
MapgenBasic::np_cave2 = params->np_cave2;
MapgenBasic::np_cavern = params->np_cavern;
MapgenBasic::np_dungeons = params->np_dungeons;
}
@ -90,6 +97,7 @@ MapgenFlat::~MapgenFlat()
MapgenFlatParams::MapgenFlatParams():
np_terrain (0, 1, v3f(600, 600, 600), 7244, 5, 0.6, 2.0),
np_filler_depth (0, 1.2, v3f(150, 150, 150), 261, 3, 0.7, 2.0),
np_cavern (0.0, 1.0, v3f(384, 128, 384), 723, 5, 0.63, 2.0),
np_cave1 (0, 12, v3f(61, 61, 61), 52534, 3, 0.5, 2.0),
np_cave2 (0, 12, v3f(67, 67, 67), 10325, 3, 0.5, 2.0),
np_dungeons (0.9, 0.5, v3f(500, 500, 500), 0, 2, 0.8, 2.0)
@ -112,11 +120,15 @@ void MapgenFlatParams::readParams(const Settings *settings)
settings->getFloatNoEx("mgflat_lake_steepness", lake_steepness);
settings->getFloatNoEx("mgflat_hill_threshold", hill_threshold);
settings->getFloatNoEx("mgflat_hill_steepness", hill_steepness);
settings->getS16NoEx("mgflat_cavern_limit", cavern_limit);
settings->getS16NoEx("mgflat_cavern_taper", cavern_taper);
settings->getFloatNoEx("mgflat_cavern_threshold", cavern_threshold);
settings->getS16NoEx("mgflat_dungeon_ymin", dungeon_ymin);
settings->getS16NoEx("mgflat_dungeon_ymax", dungeon_ymax);
settings->getNoiseParams("mgflat_np_terrain", np_terrain);
settings->getNoiseParams("mgflat_np_filler_depth", np_filler_depth);
settings->getNoiseParams("mgflat_np_cavern", np_cavern);
settings->getNoiseParams("mgflat_np_cave1", np_cave1);
settings->getNoiseParams("mgflat_np_cave2", np_cave2);
settings->getNoiseParams("mgflat_np_dungeons", np_dungeons);
@ -138,11 +150,15 @@ void MapgenFlatParams::writeParams(Settings *settings) const
settings->setFloat("mgflat_lake_steepness", lake_steepness);
settings->setFloat("mgflat_hill_threshold", hill_threshold);
settings->setFloat("mgflat_hill_steepness", hill_steepness);
settings->setS16("mgflat_cavern_limit", cavern_limit);
settings->setS16("mgflat_cavern_taper", cavern_taper);
settings->setFloat("mgflat_cavern_threshold", cavern_threshold);
settings->setS16("mgflat_dungeon_ymin", dungeon_ymin);
settings->setS16("mgflat_dungeon_ymax", dungeon_ymax);
settings->setNoiseParams("mgflat_np_terrain", np_terrain);
settings->setNoiseParams("mgflat_np_filler_depth", np_filler_depth);
settings->setNoiseParams("mgflat_np_cavern", np_cavern);
settings->setNoiseParams("mgflat_np_cave1", np_cave1);
settings->setNoiseParams("mgflat_np_cave2", np_cave2);
settings->setNoiseParams("mgflat_np_dungeons", np_dungeons);
@ -226,10 +242,24 @@ void MapgenFlat::makeChunk(BlockMakeData *data)
generateBiomes();
}
// Generate tunnels, caverns and large randomwalk caves
if (flags & MG_CAVES) {
// Generate tunnels
// Generate tunnels first as caverns confuse them
generateCavesNoiseIntersection(stone_surface_max_y);
// Generate caverns
bool near_cavern = false;
if (spflags & MGFLAT_CAVERNS)
near_cavern = generateCavernsNoise(stone_surface_max_y);
// Generate large randomwalk caves
if (near_cavern)
// Disable large randomwalk caves in this mapchunk by setting
// 'large cave depth' to world base. Avoids excessive liquid in
// large caverns and floating blobs of overgenerated liquid.
generateCavesRandomWalk(stone_surface_max_y,
-MAX_MAP_GENERATION_LIMIT);
else
generateCavesRandomWalk(stone_surface_max_y, large_cave_depth);
}

24
src/mapgen/mapgen_flat.h
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@ -1,7 +1,7 @@
/*
Minetest
Copyright (C) 2015-2018 paramat
Copyright (C) 2015-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2015-2020 paramat
Copyright (C) 2015-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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
@ -25,6 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
/////// Mapgen Flat flags
#define MGFLAT_LAKES 0x01
#define MGFLAT_HILLS 0x02
#define MGFLAT_CAVERNS 0x04
class BiomeManager;
@ -33,22 +34,27 @@ extern FlagDesc flagdesc_mapgen_flat[];
struct MapgenFlatParams : public MapgenParams
{
s16 ground_level = 8;
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;
float cave_width = 0.09f;
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;