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Mapgen: Add Carpathian mapgen (#6015)

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Vaughan Lapsley 2017-07-06 21:53:56 +10:00 committed by Loïc Blot
parent 6bedb6de40
commit a80ecbee1e
9 changed files with 725 additions and 0 deletions
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1
build/android/jni/Android.mk
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@ -175,6 +175,7 @@ LOCAL_SRC_FILES := \
jni/src/mapblock.cpp \
jni/src/mapblock_mesh.cpp \
jni/src/mapgen.cpp \
jni/src/mapgen_carpathian.cpp \
jni/src/mapgen_flat.cpp \
jni/src/mapgen_fractal.cpp \
jni/src/mapgen_singlenode.cpp \

70
builtin/settingtypes.txt
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@ -1220,6 +1220,76 @@ mgv7_np_cave1 (Cave1 noise) noise_params 0, 12, (61, 61, 61), 52534, 3, 0.5, 2.0
# Second of 2 3D noises that together define tunnels.
mgv7_np_cave2 (Cave2 noise) noise_params 0, 12, (67, 67, 67), 10325, 3, 0.5, 2.0
[***Mapgen carpathian]
# Map generation attributes specific to Mapgen Carpathian.
# Flags that are not specified in the flag string are not modified from the default.
# Flags starting with 'no' are used to explicitly disable them.
mgcarpathian_spflags (Mapgen Carpathian specific flags) flags caverns caverns,nocaverns
# Controls width of tunnels, a smaller value creates wider tunnels.
mgcarpathian_cave_width (Cave width) float 0.09
# Y of upper limit of large pseudorandom caves.
mgcarpathian_large_cave_depth (Large cave depth) int -33
# Y-level of cavern upper limit.
mgcarpathian_cavern_limit (Cavern limit) int -256
# Y-distance over which caverns expand to full size.
mgcarpathian_cavern_taper (Cavern taper) int 256
# Defines full size of caverns, smaller values create larger caverns.
mgcarpathian_cavern_threshold (Cavern threshold) float 0.7
# 2D noise that defines the base ground level.
mgcarpathian_np_base (Base ground noise) noise_params 12, 1, (2557, 2557, 2557), 6538, 4, 0.8, 0.5
# Variation of biome filler depth.
mgcarpathian_np_filler_depth (Filler depth noise) noise_params 0, 1, (128, 128, 128), 261, 3, 0.7, 2.0
# First of 4 3D noises that together define hill/mountain range height.
mgcarpathian_np_height1 (Hilliness1 noise) noise_params 0, 5, (251, 251, 251), 9613, 5, 0.5, 2.0
# Second of 4 3D noises that together define hill/mountain range height.
mgcarpathian_np_height2 (Hilliness2 noise) noise_params 0, 5, (383, 383, 383), 1949, 5, 0.5, 2.0
# Third of 4 3D noises that together define hill/mountain range height.
mgcarpathian_np_height3 (Hilliness3 noise) noise_params 0, 5, (509, 509, 509), 3211, 5, 0.5, 2.0
# Fourth of 4 3D noises that together define hill/mountain range height.
mgcarpathian_np_height4 (Hilliness4 noise) noise_params 0, 5, (631, 631, 631), 1583, 5, 0.5, 2.0
# 2D noise that controls the size/occurance of rolling hills.
mgcarpathian_np_hills_terrain (Rolling hills spread noise) noise_params 1, 1, (1301, 1301, 1301), 1692, 3, 0.5, 2.0
# 2D noise that controls the size/occurance of ridged mountain ranges.
mgcarpathian_np_ridge_terrain (Ridge mountain spread noise) noise_params 1, 1, (1889, 1889, 1889), 3568, 3, 0.5, 2.0
# 2D noise that controls the size/occurance of step mountain ranges.
mgcarpathian_np_step_terrain (Step mountain spread noise) noise_params 1, 1, (1889, 1889, 1889), 4157, 3, 0.5, 2.0
# 2D noise that controls the shape/size of rolling hills.
mgcarpathian_np_hills (Rolling hill size noise) noise_params 0, 3, (257, 257, 257), 6604, 6, 0.5, 2.0
# 2D noise that controls the shape/size of ridged mountains.
mgcarpathian_np_ridge_mnt (Ridged mountain size noise) noise_params 0, 12, (743, 743, 743), 5520, 6, 0.7, 2.0
# 2D noise that controls the shape/size of step mountains.
mgcarpathian_np_step_mnt (Step mountain size noise) noise_params 0, 8, (509, 509, 509), 2590, 6, 0.6, 2.0
# 3D noise for mountain overhangs, cliffs, etc. Usually small variations.
mgcarpathian_np_mnt_var (Mountain variation noise) noise_params 0, 1, (499, 499, 499), 2490, 5, 0.6, 2.0
# First of 2 3D noises that together define tunnels.
mgcarpathian_np_cave1 (Cave1 noise) noise_params 0, 12, (61, 61, 61), 52534, 3, 0.5, 2.0
# Second of 2 3D noises that together define tunnels.
mgcarpathian_np_cave2 (Cave2 noise) noise_params 0, 12, (67, 67, 67), 10325, 3, 0.5, 2.0
# 3D noise defining giant caverns.
mgcarpathian_np_cavern (Cavern noise) noise_params 0, 1, (384, 128, 384), 723, 5, 0.63, 2.0
[***Mapgen flat]
# Map generation attributes specific to Mapgen flat.

92
minetest.conf.example
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@ -1484,6 +1484,98 @@
# type: noise_params
# mgv7_np_cave2 = 0, 12, (67, 67, 67), 10325, 3, 0.5, 2.0
#### Mapgen carpathian
# Map generation attributes specific to Mapgen Carpathian.
# Flags that are not specified in the flag string are not modified from the default.
# Flags starting with 'no' are used to explicitly disable them.
# type: flags possible values: caverns, nocaverns
# mgcarpathian_spflags = caverns
# Controls width of tunnels, a smaller value creates wider tunnels.
# type: float
# mgcarpathian_cave_width = 0.09
# Y of upper limit of large pseudorandom caves.
# type: int
# mgcarpathian_large_cave_depth = -33
# Y-level of cavern upper limit.
# type: int
# mgcarpathian_cavern_limit = -256
# Y-distance over which caverns expand to full size.
# type: int
# mgcarpathian_cavern_taper = 256
# Defines full size of caverns, smaller values create larger caverns.
# type: float
# mgcarpathian_cavern_threshold = 0.7
# 2D noise that defines the base ground level.
# type: noise_params
# mgcarpathian_np_base = 12, 1, (2557, 2557, 2557), 6538, 4, 0.8, 0.5
# Variation of biome filler depth.
# type: noise_params
# mgcarpathian_np_filler_depth = 0, 1, (128, 128, 128), 261, 3, 0.7, 2.0
# First of 4 3D noises that together define hill/mountain range height.
# type: noise_params
# mgcarpathian_np_height1 = 0, 5, (251, 251, 251), 9613, 5, 0.5, 2.0
# Second of 4 3D noises that together define hill/mountain range height.
# type: noise_params
# mgcarpathian_np_height2 = 0, 5, (383, 383, 383), 1949, 5, 0.5, 2.0
# Third of 4 3D noises that together definehill/mountain range height.
# type: noise_params
# mgcarpathian_np_height3 = 0, 5, (509, 509, 509), 3211, 5, 0.5, 2.0
# Fourth of 4 3D noises that together define hill/mountain range height.
# type: noise_params
# mgcarpathian_np_height4 = 0, 5, (631, 631, 631), 1583, 5, 0.5, 2.0
# 2D noise that controls the size/occurance of rolling hills.
# type: noise_params
# mgcarpathian_np_hills_terrain = 1, 1, (1301, 1301, 1301), 1692, 3, 0.5, 2.0
# 2D noise that controls the size/occurance of ridged mountain ranges.
# type: noise_params
# mgcarpathian_np_ridge_terrain = 1, 1, (1889, 1889, 1889), 3568, 3, 0.5, 2.0
# 2D noise that controls the size/occurance of step mountain ranges.
# type: noise_params
# mgcarpathian_np_step_terrain = 1, 1, (1889, 1889, 1889), 4157, 3, 0.5, 2.0
# 2D noise that controls the shape/size of rolling hills.
# type: noise_params
# mgcarpathian_np_hills = 0, 3, (257, 257, 257), 6604, 6, 0.5, 2.0
# 2D noise that controls the shape/size of ridged mountains.
# type: noise_params
# mgcarpathian_np_ridge_mnt = 0, 12, (743, 743, 743), 5520, 6, 0.7, 2.0
# 2D noise that controls the shape/size of step mountains.
# type: noise_params
# mgcarpathian_np_step_mnt = 0, 8, (509, 509, 509), 2590, 6, 0.6, 2.0
# 3D noise for mountain overhangs, cliffs, etc. Usually small variations.
# type: noise_params
# mgcarpathian_np_mnt_var = 0, 1, (499, 499, 499), 2490, 5, 0.6, 2.0
# First of 2 3D noises that together define tunnels.
# type: noise_params
# mgcarpathian_np_cave1 = 0, 12, (61, 61, 61), 52534, 3, 0.5, 2.0
# Second of 2 3D noises that together define tunnels.
# type: noise_params
# mgcarpathian_np_cave2 = 0, 12, (67, 67, 67), 10325, 3, 0.5, 2.0
# 3D noise defining giant caverns.
# type: noise_params
# mgcarpathian_np_cavern = 0, 1, (384, 128, 384), 723, 5, 0.63, 2.0
#### Mapgen flat
# Map generation attributes specific to Mapgen flat.

1
src/CMakeLists.txt
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@ -400,6 +400,7 @@ set(common_SRCS
map_settings_manager.cpp
mapblock.cpp
mapgen.cpp
mapgen_carpathian.cpp
mapgen_flat.cpp
mapgen_fractal.cpp
mapgen_singlenode.cpp

6
src/mapgen.cpp
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@ -40,6 +40,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "util/numeric.h"
#include "filesys.h"
#include "log.h"
#include "mapgen_carpathian.h"
#include "mapgen_flat.h"
#include "mapgen_fractal.h"
#include "mapgen_v5.h"
@ -86,6 +87,7 @@ static MapgenDesc g_reg_mapgens[] = {
{"fractal", true},
{"valleys", true},
{"singlenode", true},
{"carpathian", true},
};
STATIC_ASSERT(
@ -159,6 +161,8 @@ Mapgen *Mapgen::createMapgen(MapgenType mgtype, int mgid,
MapgenParams *params, EmergeManager *emerge)
{
switch (mgtype) {
case MAPGEN_CARPATHIAN:
return new MapgenCarpathian(mgid, (MapgenCarpathianParams *)params, emerge);
case MAPGEN_FLAT:
return new MapgenFlat(mgid, (MapgenFlatParams *)params, emerge);
case MAPGEN_FRACTAL:
@ -182,6 +186,8 @@ Mapgen *Mapgen::createMapgen(MapgenType mgtype, int mgid,
MapgenParams *Mapgen::createMapgenParams(MapgenType mgtype)
{
switch (mgtype) {
case MAPGEN_CARPATHIAN:
return new MapgenCarpathianParams;
case MAPGEN_FLAT:
return new MapgenFlatParams;
case MAPGEN_FRACTAL:

1
src/mapgen.h
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@ -118,6 +118,7 @@ enum MapgenType {
MAPGEN_FRACTAL,
MAPGEN_VALLEYS,
MAPGEN_SINGLENODE,
MAPGEN_CARPATHIAN,
MAPGEN_INVALID,
};

448
src/mapgen_carpathian.cpp Normal file
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@ -0,0 +1,448 @@
/*
Minetest
Copyright (C) 2010-2016 paramat, Matt Gregory
Copyright (C) 2010-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2017 vlapsley, Vaughan Lapsley <vlapsley@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.
*/
#include <cmath>
#include "mapgen.h"
#include "voxel.h"
#include "noise.h"
#include "mapblock.h"
#include "mapnode.h"
#include "map.h"
#include "content_sao.h"
#include "nodedef.h"
#include "voxelalgorithms.h"
//#include "profiler.h" // For TimeTaker
#include "settings.h" // For g_settings
#include "emerge.h"
#include "dungeongen.h"
#include "cavegen.h"
#include "mg_biome.h"
#include "mg_ore.h"
#include "mg_decoration.h"
#include "mapgen_carpathian.h"
FlagDesc flagdesc_mapgen_carpathian[] = {
{"caverns", MGCARPATHIAN_CAVERNS},
{NULL, 0}
};
///////////////////////////////////////////////////////////////////////////////
MapgenCarpathian::MapgenCarpathian(
int mapgenid, MapgenCarpathianParams *params, EmergeManager *emerge)
: MapgenBasic(mapgenid, params, emerge)
{
spflags = params->spflags;
cave_width = params->cave_width;
large_cave_depth = params->large_cave_depth;
cavern_limit = params->cavern_limit;
cavern_taper = params->cavern_taper;
cavern_threshold = params->cavern_threshold;
grad_wl = 1 - water_level;
//// 2D Terrain noise
noise_base = new Noise(&params->np_base, seed, csize.X, csize.Z);
noise_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
noise_height1 = new Noise(&params->np_height1, seed, csize.X, csize.Z);
noise_height2 = new Noise(&params->np_height2, seed, csize.X, csize.Z);
noise_height3 = new Noise(&params->np_height3, seed, csize.X, csize.Z);
noise_height4 = new Noise(&params->np_height4, seed, csize.X, csize.Z);
noise_hills_terrain = new Noise(&params->np_hills_terrain, seed, csize.X, csize.Z);
noise_ridge_terrain = new Noise(&params->np_ridge_terrain, seed, csize.X, csize.Z);
noise_step_terrain = new Noise(&params->np_step_terrain, seed, csize.X, csize.Z);
noise_hills = new Noise(&params->np_hills, seed, csize.X, csize.Z);
noise_ridge_mnt = new Noise(&params->np_ridge_mnt, seed, csize.X, csize.Z);
noise_step_mnt = new Noise(&params->np_step_mnt, seed, csize.X, csize.Z);
//// 3D terrain noise
// 1 up 1 down overgeneration
noise_mnt_var = new Noise(&params->np_mnt_var, seed, csize.X, csize.Y + 2, csize.Z);
//// Cave noise
MapgenBasic::np_cave1 = params->np_cave1;
MapgenBasic::np_cave2 = params->np_cave2;
MapgenBasic::np_cavern = params->np_cavern;
}
MapgenCarpathian::~MapgenCarpathian()
{
delete noise_base;
delete noise_filler_depth;
delete noise_height1;
delete noise_height2;
delete noise_height3;
delete noise_height4;
delete noise_hills_terrain;
delete noise_ridge_terrain;
delete noise_step_terrain;
delete noise_hills;
delete noise_ridge_mnt;
delete noise_step_mnt;
delete noise_mnt_var;
}
MapgenCarpathianParams::MapgenCarpathianParams()
{
np_base = NoiseParams(12, 1, v3f(2557, 2557, 2557), 6538, 4, 0.8, 0.5);
np_filler_depth = NoiseParams(0, 1, v3f(128, 128, 128), 261, 3, 0.7, 2.0);
np_height1 = NoiseParams(0, 5, v3f(251, 251, 251), 9613, 5, 0.5, 2.0);
np_height2 = NoiseParams(0, 5, v3f(383, 383, 383), 1949, 5, 0.5, 2.0);
np_height3 = NoiseParams(0, 5, v3f(509, 509, 509), 3211, 5, 0.5, 2.0);
np_height4 = NoiseParams(0, 5, v3f(631, 631, 631), 1583, 5, 0.5, 2.0);
np_hills_terrain = NoiseParams(1, 1, v3f(1301, 1301, 1301), 1692, 5, 0.5, 2.0);
np_ridge_terrain = NoiseParams(1, 1, v3f(1889, 1889, 1889), 3568, 5, 0.5, 2.0);
np_step_terrain = NoiseParams(1, 1, v3f(1889, 1889, 1889), 4157, 5, 0.5, 2.0);
np_hills = NoiseParams(0, 3, v3f(257, 257, 257), 6604, 6, 0.5, 2.0);
np_ridge_mnt = NoiseParams(0, 12, v3f(743, 743, 743), 5520, 6, 0.7, 2.0);
np_step_mnt = NoiseParams(0, 8, v3f(509, 509, 509), 2590, 6, 0.6, 2.0);
np_mnt_var = NoiseParams(0, 1, v3f(499, 499, 499), 2490, 5, 0.6, 2.0);
np_cave1 = NoiseParams(0, 12, v3f(61, 61, 61), 52534, 3, 0.5, 2.0);
np_cave2 = NoiseParams(0, 12, v3f(67, 67, 67), 10325, 3, 0.5, 2.0);
np_cavern = NoiseParams(0, 1, v3f(384, 128, 384), 723, 5, 0.63, 2.0);
}
void MapgenCarpathianParams::readParams(const Settings *settings)
{
settings->getFlagStrNoEx("mgcarpathian_spflags", spflags, flagdesc_mapgen_carpathian);
settings->getFloatNoEx("mgcarpathian_cave_width", cave_width);
settings->getS16NoEx("mgcarpathian_large_cave_depth", large_cave_depth);
settings->getS16NoEx("mgcarpathian_cavern_limit", cavern_limit);
settings->getS16NoEx("mgcarpathian_cavern_taper", cavern_taper);
settings->getFloatNoEx("mgcarpathian_cavern_threshold", cavern_threshold);
settings->getNoiseParams("mgcarpathian_np_base", np_base);
settings->getNoiseParams("mgcarpathian_np_filler_depth", np_filler_depth);
settings->getNoiseParams("mgcarpathian_np_height1", np_height1);
settings->getNoiseParams("mgcarpathian_np_height2", np_height2);
settings->getNoiseParams("mgcarpathian_np_height3", np_height3);
settings->getNoiseParams("mgcarpathian_np_height4", np_height4);
settings->getNoiseParams("mgcarpathian_np_hills_terrain", np_hills_terrain);
settings->getNoiseParams("mgcarpathian_np_ridge_terrain", np_ridge_terrain);
settings->getNoiseParams("mgcarpathian_np_step_terrain", np_step_terrain);
settings->getNoiseParams("mgcarpathian_np_hills", np_hills);
settings->getNoiseParams("mgcarpathian_np_ridge_mnt", np_ridge_mnt);
settings->getNoiseParams("mgcarpathian_np_step_mnt", np_step_mnt);
settings->getNoiseParams("mgcarpathian_np_mnt_var", np_mnt_var);
settings->getNoiseParams("mgcarpathian_np_cave1", np_cave1);
settings->getNoiseParams("mgcarpathian_np_cave2", np_cave2);
settings->getNoiseParams("mgcarpathian_np_cavern", np_cavern);
}
void MapgenCarpathianParams::writeParams(Settings *settings) const
{
settings->setFlagStr("mgcarpathian_spflags", spflags, flagdesc_mapgen_carpathian, U32_MAX);
settings->setFloat("mgcarpathian_cave_width", cave_width);
settings->setS16("mgcarpathian_large_cave_depth", large_cave_depth);
settings->setS16("mgcarpathian_cavern_limit", cavern_limit);
settings->setS16("mgcarpathian_cavern_taper", cavern_taper);
settings->setFloat("mgcarpathian_cavern_threshold", cavern_threshold);
settings->setNoiseParams("mgcarpathian_np_base", np_base);
settings->setNoiseParams("mgcarpathian_np_filler_depth", np_filler_depth);
settings->setNoiseParams("mgcarpathian_np_height1", np_height1);
settings->setNoiseParams("mgcarpathian_np_height2", np_height2);
settings->setNoiseParams("mgcarpathian_np_height3", np_height3);
settings->setNoiseParams("mgcarpathian_np_height4", np_height4);
settings->setNoiseParams("mgcarpathian_np_hills_terrain", np_hills_terrain);
settings->setNoiseParams("mgcarpathian_np_ridge_terrain", np_ridge_terrain);
settings->setNoiseParams("mgcarpathian_np_step_terrain", np_step_terrain);
settings->setNoiseParams("mgcarpathian_np_hills", np_hills);
settings->setNoiseParams("mgcarpathian_np_ridge_mnt", np_ridge_mnt);
settings->setNoiseParams("mgcarpathian_np_step_mnt", np_step_mnt);
settings->setNoiseParams("mgcarpathian_np_mnt_var", np_mnt_var);
settings->setNoiseParams("mgcarpathian_np_cave1", np_cave1);
settings->setNoiseParams("mgcarpathian_np_cave2", np_cave2);
settings->setNoiseParams("mgcarpathian_np_cavern", np_cavern);
}
///////////////////////////////////////////////////////////////////////////////
// Lerp function
inline float MapgenCarpathian::getLerp(float noise1, float noise2, float mod)
{
return noise1 + mod * (noise2 - noise1);
}
// Steps function
float MapgenCarpathian::getSteps(float noise1, float noise2)
{
float w = fabs(noise2);
float k = floor(noise1 / w);
float f = (noise1 - k * w) / w;
float s = std::fmin(2.f * f, 1.f);
return (k + s) * w;
}
///////////////////////////////////////////////////////////////////////////////
void MapgenCarpathian::makeChunk(BlockMakeData *data)
{
// Pre-conditions
assert(data->vmanip);
assert(data->nodedef);
assert(data->blockpos_requested.X >= data->blockpos_min.X &&
data->blockpos_requested.Y >= data->blockpos_min.Y &&
data->blockpos_requested.Z >= data->blockpos_min.Z);
assert(data->blockpos_requested.X <= data->blockpos_max.X &&
data->blockpos_requested.Y <= data->blockpos_max.Y &&
data->blockpos_requested.Z <= data->blockpos_max.Z);
this->generating = true;
this->vm = data->vmanip;
this->ndef = data->nodedef;
v3s16 blockpos_min = data->blockpos_min;
v3s16 blockpos_max = data->blockpos_max;
node_min = blockpos_min * MAP_BLOCKSIZE;
node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
full_node_min = (blockpos_min - 1) * MAP_BLOCKSIZE;
full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
// Create a block-specific seed
blockseed = getBlockSeed2(full_node_min, seed);
// Generate terrain
s16 stone_surface_max_y = generateTerrain();
// Create heightmap
updateHeightmap(node_min, node_max);
// Init biome generator, place biome-specific nodes, and build biomemap
biomegen->calcBiomeNoise(node_min);
MgStoneType stone_type = generateBiomes();
// Generate caverns, tunnels and classic caves
if (flags & MG_CAVES) {
bool has_cavern = false;
// Generate caverns
if (spflags & MGCARPATHIAN_CAVERNS)
has_cavern = generateCaverns(stone_surface_max_y);
// Generate tunnels and classic caves
if (has_cavern)
// Disable classic caves in this mapchunk by setting
// 'large cave depth' to world base. Avoids excessive liquid in
// large caverns and floating blobs of overgenerated liquid.
generateCaves(stone_surface_max_y, -MAX_MAP_GENERATION_LIMIT);
else
generateCaves(stone_surface_max_y, large_cave_depth);
}
// Generate dungeons
if (flags & MG_DUNGEONS)
generateDungeons(stone_surface_max_y, stone_type);
// Generate the registered decorations
if (flags & MG_DECORATIONS)
m_emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max);
// Generate the registered ores
m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max);
// Sprinkle some dust on top after everything else was generated
dustTopNodes();
// Update liquids
updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
// Calculate lighting
if (flags & MG_LIGHT) {
calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0),
full_node_min, full_node_max);
}
this->generating = false;
}
///////////////////////////////////////////////////////////////////////////////
int MapgenCarpathian::getSpawnLevelAtPoint(v2s16 p)
{
s16 level_at_point = terrainLevelAtPoint(p.X, p.Y);
if (level_at_point <= water_level || level_at_point > water_level + 32)
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
else
return level_at_point;
}
float MapgenCarpathian::terrainLevelAtPoint(s16 x, s16 z)
{
float ground = NoisePerlin2D(&noise_base->np, x, z, seed);
float height1 = NoisePerlin2D(&noise_height1->np, x, z, seed);
float height2 = NoisePerlin2D(&noise_height2->np, x, z, seed);
float height3 = NoisePerlin2D(&noise_height3->np, x, z, seed);
float height4 = NoisePerlin2D(&noise_height4->np, x, z, seed);
float hter = NoisePerlin2D(&noise_hills_terrain->np, x, z, seed);
float rter = NoisePerlin2D(&noise_ridge_terrain->np, x, z, seed);
float ster = NoisePerlin2D(&noise_step_terrain->np, x, z, seed);
float n_hills = NoisePerlin2D(&noise_hills->np, x, z, seed);
float n_ridge_mnt = NoisePerlin2D(&noise_ridge_mnt->np, x, z, seed);
float n_step_mnt = NoisePerlin2D(&noise_step_mnt->np, x, z, seed);
int height = -MAX_MAP_GENERATION_LIMIT;
for (s16 y = 1; y <= 30; y++) {
float mnt_var = NoisePerlin3D(&noise_mnt_var->np, x, y, z, seed);
// Gradient & shallow seabed
s32 grad = (y < water_level) ? grad_wl + (water_level - y) * 3 : 1 - y;
// Hill/Mountain height (hilliness)
float hill1 = getLerp(height1, height2, mnt_var);
float hill2 = getLerp(height3, height4, mnt_var);
float hill3 = getLerp(height3, height2, mnt_var);
float hill4 = getLerp(height1, height4, mnt_var);
float hilliness = std::fmax(std::fmin(hill1, hill2), std::fmin(hill3, hill4));
// Rolling hills
float hill_mnt = hilliness * pow(n_hills, 2.f);
float hills = pow(hter, 3.f) * hill_mnt;
// Ridged mountains
float ridge_mnt = hilliness * (1.f - fabs(n_ridge_mnt));
float ridged_mountains = pow(rter, 3.f) * ridge_mnt;
// Step (terraced) mountains
float step_mnt = hilliness * getSteps(n_step_mnt, fabs(mnt_var));
float step_mountains = pow(ster, 3.f) * step_mnt;
// Final terrain level
float mountains = hills + ridged_mountains + step_mountains;
float surface_level = ground + mountains + grad;
if (y > surface_level && height < 0)
height = y;
}
return height;
}
///////////////////////////////////////////////////////////////////////////////
int MapgenCarpathian::generateTerrain()
{
MapNode mn_air(CONTENT_AIR);
MapNode mn_stone(c_stone);
MapNode mn_water(c_water_source);
s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
u32 index2d = 0;
u32 index3d = 0;
// Calculate noise for terrain generation
noise_base->perlinMap2D(node_min.X, node_min.Z);
noise_height1->perlinMap2D(node_min.X, node_min.Z);
noise_height2->perlinMap2D(node_min.X, node_min.Z);
noise_height3->perlinMap2D(node_min.X, node_min.Z);
noise_height4->perlinMap2D(node_min.X, node_min.Z);
noise_hills_terrain->perlinMap2D(node_min.X, node_min.Z);
noise_ridge_terrain->perlinMap2D(node_min.X, node_min.Z);
noise_step_terrain->perlinMap2D(node_min.X, node_min.Z);
noise_hills->perlinMap2D(node_min.X, node_min.Z);
noise_ridge_mnt->perlinMap2D(node_min.X, node_min.Z);
noise_step_mnt->perlinMap2D(node_min.X, node_min.Z);
noise_mnt_var->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
//// Place nodes
for (s16 z = node_min.Z; z <= node_max.Z; z++) {
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X;
x++, vi++, index2d++, index3d++) {
if (vm->m_data[vi].getContent() != CONTENT_IGNORE)
continue;
// Base terrain
float ground = noise_base->result[index2d];
// Gradient & shallow seabed
s32 grad = (y < water_level) ? grad_wl + (water_level - y) * 3 : 1 - y;
// Hill/Mountain height (hilliness)
float height1 = noise_height1->result[index2d];
float height2 = noise_height2->result[index2d];
float height3 = noise_height3->result[index2d];
float height4 = noise_height4->result[index2d];
float mnt_var = noise_mnt_var->result[index3d];
// Combine height noises and apply 3D variation
float hill1 = getLerp(height1, height2, mnt_var);
float hill2 = getLerp(height3, height4, mnt_var);
float hill3 = getLerp(height3, height2, mnt_var);
float hill4 = getLerp(height1, height4, mnt_var);
// 'hilliness' determines whether hills/mountains are
// small or large
float hilliness = std::fmax(std::fmin(hill1, hill2), std::fmin(hill3, hill4));
// Rolling hills
float hter = noise_hills_terrain->result[index2d];
float n_hills = noise_hills->result[index2d];
float hill_mnt = hilliness * pow(n_hills, 2.f);
float hills = pow(fabs(hter), 3.f) * hill_mnt;
// Ridged mountains
float rter = noise_ridge_terrain->result[index2d];
float n_ridge_mnt = noise_ridge_mnt->result[index2d];
float ridge_mnt = hilliness * (1.f - fabs(n_ridge_mnt));
float ridged_mountains = pow(fabs(rter), 3.f) * ridge_mnt;
// Step (terraced) mountains
float ster = noise_step_terrain->result[index2d];
float n_step_mnt = noise_step_mnt->result[index2d];
float step_mnt = hilliness * getSteps(n_step_mnt, fabs(mnt_var));
float step_mountains = pow(fabs(ster), 3.f) * step_mnt;
// Final terrain level
float mountains = hills + ridged_mountains + step_mountains;
float surface_level = ground + mountains + grad;
if (y < surface_level) {
vm->m_data[vi] = mn_stone; // Stone
if (y > stone_surface_max_y)
stone_surface_max_y = y;
} else if (y <= water_level) {
vm->m_data[vi] = mn_water; // Sea water
} else {
vm->m_data[vi] = mn_air; // Air
}
}
index2d -= ystride;
}
index2d += ystride;
}
return stone_surface_max_y;
}

104
src/mapgen_carpathian.h Normal file
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@ -0,0 +1,104 @@
/*
Minetest
Copyright (C) 2010-2016 paramat, Matt Gregory
Copyright (C) 2010-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2017 vlapsley, Vaughan Lapsley <vlapsley@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 MAPGEN_CARPATHIAN_HEADER
#define MAPGEN_CARPATHIAN_HEADER
#include "mapgen.h"
///////// Mapgen Carpathian flags
#define MGCARPATHIAN_CAVERNS 0x01
class BiomeManager;
extern FlagDesc flagdesc_mapgen_carpathian[];
struct MapgenCarpathianParams : public MapgenParams
{
u32 spflags = MGCARPATHIAN_CAVERNS;
float cave_width = 0.09f;
s16 large_cave_depth = -33;
s16 cavern_limit = -256;
s16 cavern_taper = 256;
float cavern_threshold = 0.7f;
NoiseParams np_base;
NoiseParams np_filler_depth;
NoiseParams np_height1;
NoiseParams np_height2;
NoiseParams np_height3;
NoiseParams np_height4;
NoiseParams np_hills_terrain;
NoiseParams np_ridge_terrain;
NoiseParams np_step_terrain;
NoiseParams np_hills;
NoiseParams np_ridge_mnt;
NoiseParams np_step_mnt;
NoiseParams np_mnt_var;
NoiseParams np_cave1;
NoiseParams np_cave2;
NoiseParams np_cavern;
MapgenCarpathianParams();
~MapgenCarpathianParams() {}
void readParams(const Settings *settings);
void writeParams(Settings *settings) const;
};
class MapgenCarpathian : public MapgenBasic
{
public:
MapgenCarpathian(int mapgenid, MapgenCarpathianParams *params,
EmergeManager *emerge);
~MapgenCarpathian();
virtual MapgenType getType() const { return MAPGEN_CARPATHIAN; }
float getSteps(float noise1, float noise2);
inline float getLerp(float noise1, float noise2, float mod);
virtual void makeChunk(BlockMakeData *data);
int getSpawnLevelAtPoint(v2s16 p);
private:
s16 large_cave_depth;
s32 grad_wl;
Noise *noise_base;
Noise *noise_height1;
Noise *noise_height2;
Noise *noise_height3;
Noise *noise_height4;
Noise *noise_hills_terrain;
Noise *noise_ridge_terrain;
Noise *noise_step_terrain;
Noise *noise_hills;
Noise *noise_ridge_mnt;
Noise *noise_step_mnt;
Noise *noise_mnt_var;
float terrainLevelAtPoint(s16 x, s16 z);
int generateTerrain();
};
#endif

2
util/travis/clang-format-whitelist.txt
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@ -129,6 +129,8 @@ src/mapblock_mesh.cpp
src/mapblock_mesh.h
src/map.cpp
src/mapgen.cpp
src/mapgen_carpathian.cpp
src/mapgen_carpathian.h
src/mapgen_flat.cpp
src/mapgen_fractal.cpp
src/mapgen.h