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Mapgen V7: Huge rewrite, also tweaks to cavegen et al.

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This commit is contained in:
kwolekr
2013-07-06 02:21:35 -04:00
parent 3607fae75a
commit 18d7bc7fa1
12 changed files with 452 additions and 196 deletions
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55
src/biome.cpp
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@@ -43,9 +43,9 @@ BiomeDefManager::BiomeDefManager() {
b->flags = 0;
b->c_top = CONTENT_AIR;
b->top_depth = 0;
b->c_filler = b->c_top;
b->filler_height = MAP_GENERATION_LIMIT;
b->depth_top = 0;
b->c_filler = CONTENT_AIR;
b->depth_filler = 0;
b->height_min = -MAP_GENERATION_LIMIT;
b->height_max = MAP_GENERATION_LIMIT;
@@ -101,27 +101,42 @@ void BiomeDefManager::resolveNodeNames(INodeDefManager *ndef) {
biome_registration_finished = true;
for (size_t i = 0; i != biomes.size(); i++) {
for (size_t i = 1; i < biomes.size(); i++) {
b = biomes[i];
b->c_top = ndef->getId(b->nname_top);
if (b->c_top == CONTENT_IGNORE) {
b->c_top = ndef->getId(b->top_nodename);
if (b->c_top == CONTENT_IGNORE) {
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->top_nodename << "' not defined" << std::endl;
b->c_top = CONTENT_AIR;
b->top_depth = 0;
}
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->nname_top << "' not defined" << std::endl;
b->c_top = CONTENT_AIR;
b->depth_top = 0;
}
b->c_filler = ndef->getId(b->nname_filler);
if (b->c_filler == CONTENT_IGNORE) {
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->nname_filler << "' not defined" << std::endl;
b->c_filler = CONTENT_AIR;
b->depth_filler = 0;
}
if (b->c_filler == CONTENT_IGNORE) {
b->c_filler = ndef->getId(b->filler_nodename);
if (b->c_filler == CONTENT_IGNORE) {
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->filler_nodename << "' not defined" << std::endl;
b->c_filler = CONTENT_AIR;
b->filler_height = MAP_GENERATION_LIMIT;
}
b->c_water = ndef->getId(b->nname_water);
if (b->c_water == CONTENT_IGNORE) {
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->nname_water << "' not defined" << std::endl;
b->c_water = CONTENT_AIR;
}
b->c_dust = ndef->getId(b->nname_dust);
if (b->c_dust == CONTENT_IGNORE) {
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->nname_dust << "' not defined" << std::endl;
}
b->c_dust_water = ndef->getId(b->nname_dust_water);
if (b->c_dust_water == CONTENT_IGNORE) {
errorstream << "BiomeDefManager::resolveNodeNames: node '"
<< b->nname_dust_water << "' not defined" << std::endl;
}
}
}

16
src/biome.h
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@@ -45,14 +45,20 @@ public:
std::string name;
u32 flags;
std::string top_nodename;
std::string filler_nodename;
std::string nname_top;
std::string nname_filler;
std::string nname_water;
std::string nname_dust;
std::string nname_dust_water;
content_t c_top;
s16 top_depth;
content_t c_filler;
s16 filler_height;
content_t c_water;
content_t c_dust;
content_t c_dust_water;
s16 depth_top;
s16 depth_filler;
s16 height_min;
s16 height_max;

19
src/cavegen.cpp
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@@ -275,6 +275,7 @@ CaveV7::CaveV7(MapgenV7 *mg, PseudoRandom *ps, bool is_large_cave) {
this->ps = ps;
this->c_water_source = mg->c_water_source;
this->c_lava_source = mg->c_lava_source;
this->c_ice = mg->c_ice;
this->np_caveliquids = &nparams_caveliquids;
dswitchint = ps->range(1, 14);
@@ -454,8 +455,9 @@ void CaveV7::makeTunnel(bool dirswitch) {
bool randomize_xz = (ps->range(1, 2) == 1);
// Make a ravine every once in a while if it's long enough
float xylen = vec.X * vec.X + vec.Z * vec.Z;
bool is_ravine = (xylen > 500.0) && !large_cave && (ps->range(1, 8) == 1);
//float xylen = vec.X * vec.X + vec.Z * vec.Z;
//disable ravines for now
bool is_ravine = false; //(xylen > 500.0) && !large_cave && (ps->range(1, 8) == 1);
// Carve routes
for (float f = 0; f < 1.0; f += 1.0 / veclen)
@@ -490,6 +492,7 @@ void CaveV7::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) {
}
bool flat_cave_floor = !large_cave && ps->range(0, 2) == 2;
bool should_make_cave_hole = ps->range(1, 10) == 1;
for (s16 z0 = d0; z0 <= d1; z0++) {
s16 si = rs / 2 - MYMAX(0, abs(z0) - rs / 7 - 1);
@@ -513,10 +516,10 @@ void CaveV7::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) {
v3s16 p(cp.X + x0, cp.Y + y0, cp.Z + z0);
p += of;
if (!is_ravine && mg->heightmap) {
if (!is_ravine && mg->heightmap && should_make_cave_hole) {
int maplen = node_max.X - node_min.X + 1;
int idx = (p.Z - node_min.Z) * maplen + (p.X - node_min.X);
if (p.Y >= mg->heightmap[idx])
if (p.Y >= mg->heightmap[idx] - 2)
continue;
}
@@ -525,9 +528,10 @@ void CaveV7::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) {
u32 i = vm->m_area.index(p);
// Don't replace air or water or lava
// Don't replace air, water, lava, or ice
content_t c = vm->m_data[i].getContent();
if (c == CONTENT_AIR || c == c_water_source || c == c_lava_source)
if (c == CONTENT_AIR || c == c_water_source ||
c == c_lava_source || c == c_ice)
continue;
if (large_cave) {
@@ -541,6 +545,9 @@ void CaveV7::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) {
else
vm->m_data[i] = airnode;
} else {
if (c == CONTENT_IGNORE)
continue;
vm->m_data[i] = airnode;
vm->m_flags[i] |= VMANIP_FLAG_CAVE;
}

1
src/cavegen.h
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@@ -104,6 +104,7 @@ public:
content_t c_water_source;
content_t c_lava_source;
content_t c_ice;
int water_level;

15
src/defaultsettings.cpp
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@@ -235,12 +235,15 @@ void set_default_settings(Settings *settings)
settings->setDefault("mgv6_np_trees", "0, 1, (125, 125, 125), 2, 4, 0.66");
settings->setDefault("mgv6_np_apple_trees", "0, 1, (100, 100, 100), 342902, 3, 0.45");
settings->setDefault("mgv7_np_terrain_base", "0, 80, (250, 250, 250), 82341, 5, 0.6");
settings->setDefault("mgv7_np_terrain_alt", "0, 20, (250, 250, 250), 5934, 5, 0.6");
settings->setDefault("mgv7_np_terrain_mod", "0, 1, (350, 350, 350), 85039, 5, 0.6");
settings->setDefault("mgv7_np_terrain_persist", "0, 1, (500, 500, 500), 539, 3, 0.6");
settings->setDefault("mgv7_np_height_select", "0.5, 0.5, (250, 250, 250), 4213, 5, 0.69");
settings->setDefault("mgv7_np_ridge", "0, 1, (100, 100, 100), 6467, 4, 0.75");
settings->setDefault("mgv7_np_terrain_base", "4, 70, (300, 300, 300), 82341, 6, 0.7");
settings->setDefault("mgv7_np_terrain_alt", "4, 25, (600, 600, 600), 5934, 5, 0.6");
settings->setDefault("mgv7_np_terrain_persist", "0.6, 0.1, (500, 500, 500), 539, 3, 0.6");
settings->setDefault("mgv7_np_height_select", "-0.5, 1, (250, 250, 250), 4213, 5, 0.69");
settings->setDefault("mgv7_np_filler_depth", "0, 1.2, (150, 150, 150), 261, 4, 0.7");
settings->setDefault("mgv7_np_mount_height", "100, 30, (500, 500, 500), 72449, 4, 0.6");
settings->setDefault("mgv7_np_ridge_uwater", "0, 1, (500, 500, 500), 85039, 4, 0.6");
settings->setDefault("mgv7_np_mountain", "0, 1, (250, 350, 250), 5333, 5, 0.68");
settings->setDefault("mgv7_np_ridge", "0, 1, (100, 120, 100), 6467, 4, 0.75");
settings->setDefault("mgindev_np_terrain_base", "-4, 20, (250, 250, 250), 82341, 5, 0.6, 10, 10");
settings->setDefault("mgindev_np_terrain_higher", "20, 16, (500, 500, 500), 85039, 5, 0.6, 10, 10");

23
src/mapgen.cpp
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@@ -291,7 +291,7 @@ void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
continue;
int height = getHeight();
int max_y = nmax.Y + MAP_BLOCKSIZE;
int max_y = nmax.Y;// + MAP_BLOCKSIZE - 1;
if (y + 1 + height > max_y) {
continue;
#if 0
@@ -859,9 +859,16 @@ void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
//TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
int index = 0;
for (s16 z = nmin.Z; z <= nmax.Z; z++) {
for (s16 x = nmin.X; x <= nmax.X; x++) {
for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
heightmap[index++] = y;
// if the values found are out of range, trust the old heightmap
if (y == nmax.Y && heightmap[index] > nmax.Y)
continue;
if (y == nmin.Y - 1 && heightmap[index] < nmin.Y)
continue;
heightmap[index] = y;
}
}
//printf("updateHeightmap: %dus\n", t.stop());
@@ -1060,9 +1067,12 @@ bool MapgenV7Params::readParams(Settings *settings) {
bool success =
settings->getNoiseParams("mgv7_np_terrain_base", np_terrain_base) &&
settings->getNoiseParams("mgv7_np_terrain_alt", np_terrain_alt) &&
settings->getNoiseParams("mgv7_np_terrain_mod", np_terrain_mod) &&
settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
settings->getNoiseParams("mgv7_np_height_select", np_height_select) &&
settings->getNoiseParams("mgv7_np_filler_depth", np_filler_depth) &&
settings->getNoiseParams("mgv7_np_mount_height", np_mount_height) &&
settings->getNoiseParams("mgv7_np_ridge_uwater", np_ridge_uwater) &&
settings->getNoiseParams("mgv7_np_mountain", np_mountain) &&
settings->getNoiseParams("mgv7_np_ridge", np_ridge);
return success;
}
@@ -1071,9 +1081,12 @@ bool MapgenV7Params::readParams(Settings *settings) {
void MapgenV7Params::writeParams(Settings *settings) {
settings->setNoiseParams("mgv7_np_terrain_base", np_terrain_base);
settings->setNoiseParams("mgv7_np_terrain_alt", np_terrain_alt);
settings->setNoiseParams("mgv7_np_terrain_mod", np_terrain_mod);
settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
settings->setNoiseParams("mgv7_np_height_select", np_height_select);
settings->setNoiseParams("mgv7_np_filler_depth", np_filler_depth);
settings->setNoiseParams("mgv7_np_mount_height", np_mount_height);
settings->setNoiseParams("mgv7_np_ridge_uwater", np_ridge_uwater);
settings->setNoiseParams("mgv7_np_mountain", np_mountain);
settings->setNoiseParams("mgv7_np_ridge", np_ridge);
}

2
src/mapgen.h
View File

@@ -36,6 +36,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#define MGV6_BIOME_BLEND 0x10
#define MG_FLAT 0x20
#define MG_NOLIGHT 0x40
#define MGV7_MOUNTAINS 0x80
#define MGV7_RIDGES 0x100
/////////////////// Ore generation flags
// Use absolute value of height to determine ore placement

11
src/mapgen_math.cpp
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@@ -172,7 +172,6 @@ void MapgenMathParams::writeParams(Settings *settings) {
MapgenMath::MapgenMath(int mapgenid, MapgenMathParams *params_, EmergeManager *emerge) : MapgenV7(mapgenid, params_, emerge) {
mg_params = params_;
this->flags |= MG_NOLIGHT;
this->ridges = 0;
Json::Value & params = mg_params->params;
invert = params["invert"].empty() ? 1 : params["invert"].asBool(); //params["invert"].empty()?1:params["invert"].asBool();
@@ -238,7 +237,7 @@ MapgenMath::~MapgenMath() {
//////////////////////// Map generator
void MapgenMath::generateTerrain() {
int MapgenMath::generateTerrain() {
MapNode n_air(CONTENT_AIR, LIGHT_SUN), n_water_source(c_water_source, LIGHT_SUN);
MapNode n_stone(c_stone, LIGHT_SUN);
@@ -263,9 +262,9 @@ void MapgenMath::generateTerrain() {
double d = (*func)(vec.X, vec.Y, vec.Z, distance, iterations);
if ((!invert && d > 0) || (invert && d == 0) ) {
if (vm->m_data[i].getContent() == CONTENT_IGNORE)
vm->m_data[i] = (y > water_level + biome->filler_height) ?
MapNode(biome->c_filler) : n_stone;
// vm->m_data[i] = n_stone;
// vm->m_data[i] = (y > water_level + biome->filler) ?
// MapNode(biome->c_filler) : n_stone;
vm->m_data[i] = n_stone;
} else if (y <= water_level) {
vm->m_data[i] = n_water_source;
} else {
@@ -361,7 +360,7 @@ void MapgenMath::generateTerrain() {
#endif
return 0;
}
int MapgenMath::getGroundLevelAtPoint(v2s16 p) {

2
src/mapgen_math.h
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@@ -42,7 +42,7 @@ class MapgenMath : public MapgenV7 {
MapgenMath(int mapgenid, MapgenMathParams *mg_params, EmergeManager *emerge);
~MapgenMath();
void generateTerrain();
int generateTerrain();
int getGroundLevelAtPoint(v2s16 p);
bool invert;

425
src/mapgen_v7.cpp
View File

@@ -24,10 +24,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "mapblock.h"
#include "mapnode.h"
#include "map.h"
//#include "serverobject.h"
#include "content_sao.h"
#include "nodedef.h"
#include "content_mapnode.h" // For content_mapnode_get_new_name
#include "voxelalgorithms.h"
#include "profiler.h"
#include "settings.h" // For g_settings
@@ -42,29 +40,27 @@ with this program; if not, write to the Free Software Foundation, Inc.,
/////////////////// Mapgen V7 perlin noise default values
NoiseParams nparams_v7_def_terrain_base =
{0, 80.0, v3f(250.0, 250.0, 250.0), 82341, 5, 0.6};
{4, 70, v3f(300, 300, 300), 82341, 6, 0.7};
NoiseParams nparams_v7_def_terrain_alt =
{0, 20.0, v3f(250.0, 250.0, 250.0), 5934, 5, 0.6};
NoiseParams nparams_v7_def_terrain_mod =
{0, 1.0, v3f(350.0, 350.0, 350.0), 85039, 5, 0.6};
{4, 25, v3f(600, 600, 600), 5934, 5, 0.6};
NoiseParams nparams_v7_def_terrain_persist =
{0, 1.0, v3f(500.0, 500.0, 500.0), 539, 3, 0.6};
{0.6, 0.1, v3f(500, 500, 500), 539, 3, 0.6};
NoiseParams nparams_v7_def_height_select =
{0.5, 0.5, v3f(250.0, 250.0, 250.0), 4213, 5, 0.69};
{-0.5, 1, v3f(250, 250, 250), 4213, 5, 0.69};
NoiseParams nparams_v7_def_filler_depth =
{0, 1.2, v3f(150, 150, 150), 261, 4, 0.7};
NoiseParams nparams_v7_def_mount_height =
{100, 30, v3f(500, 500, 500), 72449, 4, 0.6};
NoiseParams nparams_v7_def_ridge_uwater =
{0, 1, v3f(500, 500, 500), 85039, 4, 0.6};
NoiseParams nparams_v7_def_mountain =
{0, 1, v3f(250, 350, 250), 5333, 5, 0.68};
NoiseParams nparams_v7_def_ridge =
{0, 1.0, v3f(100.0, 100.0, 100.0), 6467, 4, 0.75};
/*
NoiseParams nparams_v6_def_beach =
{0.0, 1.0, v3f(250.0, 250.0, 250.0), 59420, 3, 0.50};
NoiseParams nparams_v6_def_cave =
{6.0, 6.0, v3f(250.0, 250.0, 250.0), 34329, 3, 0.50};
NoiseParams nparams_v6_def_humidity =
{0.5, 0.5, v3f(500.0, 500.0, 500.0), 72384, 4, 0.66};
NoiseParams nparams_v6_def_trees =
{0.0, 1.0, v3f(125.0, 125.0, 125.0), 2, 4, 0.66};
NoiseParams nparams_v6_def_apple_trees =
{0.0, 1.0, v3f(100.0, 100.0, 100.0), 342902, 3, 0.45};
*/
{0, 1, v3f(100, 100, 100), 6467, 4, 0.75};
///////////////////////////////////////////////////////////////////////////////
@@ -76,11 +72,14 @@ MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
this->seed = (int)params->seed;
this->water_level = params->water_level;
this->flags = params->flags;
this->ridges = 1;
this->flags = params->flags | MGV7_MOUNTAINS | MGV7_RIDGES;
this->csize = v3s16(1, 1, 1) * params->chunksize * MAP_BLOCKSIZE;
this->ystride = csize.X; //////fix this
// amount of elements to skip for the next index
// for noise/height/biome maps (not vmanip)
this->ystride = csize.X;
this->zstride = csize.X * csize.Y;
this->biomemap = new u8[csize.X * csize.Z];
this->heightmap = new s16[csize.X * csize.Z];
@@ -89,10 +88,15 @@ MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
// Terrain noise
noise_terrain_base = new Noise(&params->np_terrain_base, seed, csize.X, csize.Z);
noise_terrain_alt = new Noise(&params->np_terrain_alt, seed, csize.X, csize.Z);
noise_terrain_mod = new Noise(&params->np_terrain_mod, seed, csize.X, csize.Z);
noise_terrain_persist = new Noise(&params->np_terrain_persist, seed, csize.X, csize.Z);
noise_height_select = new Noise(&params->np_height_select, seed, csize.X, csize.Z);
noise_ridge = new Noise(&params->np_ridge, seed, csize.X, csize.Y, csize.Z);
noise_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
noise_mount_height = new Noise(&params->np_mount_height, seed, csize.X, csize.Z);
noise_ridge_uwater = new Noise(&params->np_ridge_uwater, seed, csize.X, csize.Z);
// 3d terrain noise
noise_mountain = new Noise(&params->np_mountain, seed, csize.X, csize.Y, csize.Z);
noise_ridge = new Noise(&params->np_ridge, seed, csize.X, csize.Y, csize.Z);
// Biome noise
noise_heat = new Noise(bmgr->np_heat, seed, csize.X, csize.Z);
@@ -102,11 +106,15 @@ MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
MapgenV7::~MapgenV7() {
delete noise_terrain_base;
delete noise_terrain_mod;
delete noise_terrain_persist;
delete noise_height_select;
delete noise_terrain_alt;
delete noise_filler_depth;
delete noise_mount_height;
delete noise_ridge_uwater;
delete noise_mountain;
delete noise_ridge;
delete noise_heat;
delete noise_humidity;
@@ -117,25 +125,28 @@ MapgenV7::~MapgenV7() {
int MapgenV7::getGroundLevelAtPoint(v2s16 p) {
s16 groundlevel = baseTerrainLevelAtPoint(p.X, p.Y);
float heat = NoisePerlin2D(bmgr->np_heat, p.X, p.Y, seed);
float humidity = NoisePerlin2D(bmgr->np_humidity, p.X, p.Y, seed);
Biome *b = bmgr->getBiome(heat, humidity, groundlevel);
// Base terrain calculation
s16 y = baseTerrainLevelAtPoint(p.X, p.Y);
s16 y = groundlevel;
int iters = 1024; // don't even bother iterating more than 64 times..
// Ridge/river terrain calculation
float width = 0.3;
float uwatern = NoisePerlin2DNoTxfm(noise_ridge_uwater->np, p.X, p.Y, seed) * 2;
// actually computing the depth of the ridge is much more expensive;
// if inside a river, simply guess
if (uwatern >= -width && uwatern <= width)
return water_level - 10;
// Mountain terrain calculation
int iters = 128; // don't even bother iterating more than 128 times..
while (iters--) {
if (y <= water_level)
break;
float ridgenoise = NoisePerlin3D(noise_ridge->np, p.X, y, p.Y, seed);
if (ridgenoise * (float)(y * y) < 15.0)
break;
//current point would have been air
if (!getMountainTerrainAtPoint(p.X, y, p.Y))
return y;
y--;
y++;
}
return y + b->top_depth;
return y;
}
@@ -162,20 +173,6 @@ void MapgenV7::makeChunk(BlockMakeData *data) {
full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
blockseed = emerge->getBlockSeed(full_node_min); //////use getBlockSeed2()!
// Make some noise
calculateNoise();
// Calculate height map
s16 stone_surface_max_y = calcHeightMap();
// Calculate biomes
BiomeNoiseInput binput;
binput.mapsize = v2s16(csize.X, csize.Z);
binput.heat_map = noise_heat->result;
binput.humidity_map = noise_humidity->result;
binput.height_map = heightmap;
bmgr->calcBiomes(&binput, biomemap);
c_stone = ndef->getId("mapgen_stone");
c_dirt = ndef->getId("mapgen_dirt");
@@ -183,17 +180,31 @@ void MapgenV7::makeChunk(BlockMakeData *data) {
c_sand = ndef->getId("mapgen_sand");
c_water_source = ndef->getId("mapgen_water_source");
c_lava_source = ndef->getId("mapgen_lava_source");
c_ice = ndef->getId("default:ice");
if (c_ice == CONTENT_IGNORE)
c_ice = CONTENT_AIR;
generateTerrain();
if (this->ridges)
carveRidges();
// Make some noise
calculateNoise();
// Generate base terrain, mountains, and ridges with initial heightmaps
s16 stone_surface_max_y = generateTerrain();
updateHeightmap(node_min, node_max);
// Calculate biomes
BiomeNoiseInput binput;
binput.mapsize = v2s16(csize.X, csize.Z);
binput.heat_map = noise_heat->result;
binput.humidity_map = noise_humidity->result;
binput.height_map = heightmap;
bmgr->calcBiomes(&binput, biomemap);
// Actually place the biome-specific nodes and what not
generateBiomes();
if (flags & MG_CAVES)
generateCaves(stone_surface_max_y);
addTopNodes();
updateHeightmap(node_min, node_max);
if (flags & MG_DUNGEONS) {
DungeonGen dgen(ndef, data->seed, water_level);
@@ -210,6 +221,9 @@ void MapgenV7::makeChunk(BlockMakeData *data) {
ore->placeOre(this, blockseed + i, node_min, node_max);
}
// Sprinkle some dust on top after everything else was generated
dustTopNodes();
//printf("makeChunk: %dms\n", t.stop());
updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
@@ -219,7 +233,7 @@ void MapgenV7::makeChunk(BlockMakeData *data) {
node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE);
//setLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
// node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE, 0xFF);
this->generating = false;
}
@@ -230,15 +244,14 @@ void MapgenV7::calculateNoise() {
int y = node_min.Y;
int z = node_min.Z;
noise_terrain_mod->perlinMap2D(x, z);
noise_height_select->perlinMap2D(x, z);
noise_height_select->transformNoiseMap();
noise_terrain_persist->perlinMap2D(x, z);
noise_terrain_persist->transformNoiseMap();
float *persistmap = noise_terrain_persist->result;
for (int i = 0; i != csize.X * csize.Z; i++)
persistmap[i] = abs(persistmap[i]);
persistmap[i] = rangelim(persistmap[i], 0.4, 0.9);
noise_terrain_base->perlinMap2DModulated(x, z, persistmap);
noise_terrain_base->transformNoiseMap();
@@ -246,10 +259,20 @@ void MapgenV7::calculateNoise() {
noise_terrain_alt->perlinMap2DModulated(x, z, persistmap);
noise_terrain_alt->transformNoiseMap();
noise_ridge->perlinMap3D(x, y, z);
noise_filler_depth->perlinMap2D(x, z);
if (flags & MGV7_MOUNTAINS) {
noise_mountain->perlinMap3D(x, y, z);
noise_mount_height->perlinMap2D(x, z);
noise_mount_height->transformNoiseMap();
}
if (flags & MGV7_RIDGES) {
noise_ridge->perlinMap3D(x, y, z);
noise_ridge_uwater->perlinMap2D(x, z);
}
noise_heat->perlinMap2D(x, z);
noise_humidity->perlinMap2D(x, z);
//printf("calculateNoise: %dus\n", t.stop());
@@ -264,36 +287,56 @@ Biome *MapgenV7::getBiomeAtPoint(v3s16 p) {
return bmgr->getBiome(heat, humidity, groundlevel);
}
//needs to be updated
float MapgenV7::baseTerrainLevelAtPoint(int x, int z) {
float terrain_mod = NoisePerlin2DNoTxfm(noise_terrain_mod->np, x, z, seed);
float hselect = NoisePerlin2D(noise_height_select->np, x, z, seed);
float persist = abs(NoisePerlin2DNoTxfm(noise_terrain_persist->np, x, z, seed));
float hselect = NoisePerlin2D(noise_height_select->np, x, z, seed);
hselect = rangelim(hselect, 0.0, 1.0);
float persist = NoisePerlin2D(noise_terrain_persist->np, x, z, seed);
persist = rangelim(persist, 0.4, 0.9);
noise_terrain_base->np->persist = persist;
float terrain_base = NoisePerlin2D(noise_terrain_base->np, x, z, seed);
float height_base = terrain_base * terrain_mod;
float height_base = NoisePerlin2D(noise_terrain_base->np, x, z, seed);
noise_terrain_alt->np->persist = persist;
float height_alt = NoisePerlin2D(noise_terrain_alt->np, x, z, seed);
if (height_alt > height_base)
return height_alt;
return (height_base * hselect) + (height_alt * (1.0 - hselect));
}
float MapgenV7::baseTerrainLevelFromMap(int index) {
float terrain_mod = noise_terrain_mod->result[index];
float hselect = noise_height_select->result[index];
float terrain_base = noise_terrain_base->result[index];
float height_base = terrain_base * terrain_mod;
float height_alt = noise_terrain_alt->result[index];
float hselect = rangelim(noise_height_select->result[index], 0.0, 1.0);
float height_base = noise_terrain_base->result[index];
float height_alt = noise_terrain_alt->result[index];
if (height_alt > height_base)
return height_alt;
return (height_base * hselect) + (height_alt * (1.0 - hselect));
}
bool MapgenV7::getMountainTerrainAtPoint(int x, int y, int z) {
float mnt_h_n = NoisePerlin2D(noise_mount_height->np, x, z, seed);
float height_modifier = -((float)y / rangelim(mnt_h_n, 80.0, 150.0));
float mnt_n = NoisePerlin3D(noise_mountain->np, x, y, z, seed);
return mnt_n + height_modifier >= 0.6;
}
bool MapgenV7::getMountainTerrainFromMap(int idx_xyz, int idx_xz, int y) {
float mounthn = noise_mount_height->result[idx_xz];
float height_modifier = -((float)y / rangelim(mounthn, 80.0, 150.0));
return (noise_mountain->result[idx_xyz] + height_modifier >= 0.6);
}
#if 0
// Crap code to test log rivers as a proof-of-concept. Didn't work out too well.
void MapgenV7::carveRivers() {
MapNode n_air(CONTENT_AIR), n_water_source(c_water_source);
MapNode n_stone(c_stone);
@@ -328,8 +371,26 @@ void MapgenV7::carveRivers() {
#endif
int MapgenV7::calcHeightMap() {
int MapgenV7::generateTerrain() {
int ymax = generateBaseTerrain();
if (flags & MGV7_MOUNTAINS)
generateMountainTerrain();
if (flags & MGV7_RIDGES)
generateRidgeTerrain();
return ymax;
}
int MapgenV7::generateBaseTerrain() {
MapNode n_air(CONTENT_AIR);
MapNode n_stone(c_stone);
MapNode n_water(c_water_source);
int stone_surface_max_y = -MAP_GENERATION_LIMIT;
v3s16 em = vm->m_area.getExtent();
u32 index = 0;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
@@ -342,46 +403,50 @@ int MapgenV7::calcHeightMap() {
if (surface_y > stone_surface_max_y)
stone_surface_max_y = surface_y;
u32 i = vm->m_area.index(x, node_min.Y, z);
for (s16 y = node_min.Y; y <= node_max.Y; y++) {
if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
if (y <= surface_y)
vm->m_data[i] = n_stone;
else if (y <= water_level)
vm->m_data[i] = n_water;
else
vm->m_data[i] = n_air;
}
vm->m_area.add_y(em, i, 1);
}
}
return stone_surface_max_y;
}
void MapgenV7::generateTerrain() {
MapNode n_air(CONTENT_AIR), n_water_source(c_water_source);
void MapgenV7::generateMountainTerrain() {
if (node_max.Y <= water_level)
return;
MapNode n_stone(c_stone);
v3s16 em = vm->m_area.getExtent();
u32 index = 0;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
s16 surface_y = heightmap[index];
Biome *biome = bmgr->biomes[biomemap[index]];
u32 i = vm->m_area.index(x, node_min.Y, z);
for (s16 y = node_min.Y; y <= node_max.Y; y++) {
if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
if (y <= surface_y) {
vm->m_data[i] = (y > water_level + biome->filler_height) ?
MapNode(biome->c_filler) : n_stone;
} else if (y <= water_level) {
vm->m_data[i] = n_water_source;
} else {
vm->m_data[i] = n_air;
}
}
vm->m_area.add_y(em, i, 1);
for (s16 y = node_min.Y; y <= node_max.Y; y++) {
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X; x++) {
int j = (z - node_min.Z) * csize.X + (x - node_min.X);
if (getMountainTerrainFromMap(index, j, y))
vm->m_data[vi] = n_stone;
vi++;
index++;
}
}
}
void MapgenV7::carveRidges() {
if (node_max.Y <= water_level)
return;
void MapgenV7::generateRidgeTerrain() {
MapNode n_water(c_water_source);
MapNode n_air(CONTENT_AIR);
u32 index = 0;
@@ -389,37 +454,150 @@ void MapgenV7::carveRidges() {
for (s16 y = node_min.Y; y <= node_max.Y; y++) {
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X; x++, index++, vi++) {
// Removing this check will create huge underwater caverns,
// which are interesting but not desirable for gameplay
if (y <= water_level)
int j = (z - node_min.Z) * csize.X + (x - node_min.X);
if (heightmap[j] < water_level - 4)
continue;
if (noise_ridge->result[index] * (float)(y * y) < 15.0)
float widthn = (noise_terrain_persist->result[j] - 0.6) / 0.1;
//widthn = rangelim(widthn, -0.05, 0.5);
float width = 0.3; // TODO: figure out acceptable perlin noise values
float uwatern = noise_ridge_uwater->result[j] * 2;
if (uwatern < -width || uwatern > width)
continue;
float height_mod = (float)(y + 17) / 2.5;
float width_mod = (width - fabs(uwatern));
float nridge = noise_ridge->result[index] * (float)y / 7.0;
int j = (z - node_min.Z) * csize.Z + (x - node_min.X); //////obviously just temporary
if (y < water_level)
nridge = -fabs(nridge) * 3.0 * widthn * 0.3;
if (nridge + width_mod * height_mod < 0.6)
continue;
if (y < ridge_heightmap[j])
ridge_heightmap[j] = y - 1;
vm->m_data[vi] = n_air;
vm->m_data[vi] = (y > water_level) ? n_air : n_water;
}
}
}
/*
void MapgenV7::testBiomes() {
void MapgenV7::generateBiomes() {
if (node_max.Y < water_level)
return;
MapNode n_air(CONTENT_AIR);
MapNode n_stone(c_stone);
MapNode n_water(c_water_source);
v3s16 em = vm->m_area.getExtent();
u32 index = 0;
for (s16 z = node_min.Z; z <= node_min.Z; z++)
for (s16 x = node_min.X; x <= node_min.X; x++) {;
Biome *b = bmgr->getBiome(heat, humidity, 0);
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
Biome *biome = bmgr->biomes[biomemap[index]];
s16 dfiller = biome->depth_filler + noise_filler_depth->result[index];
s16 y0_top = biome->depth_top;
s16 y0_filler = biome->depth_filler + biome->depth_top + dfiller;
s16 nplaced = 0;
u32 i = vm->m_area.index(x, node_max.Y, z);
content_t c_above = vm->m_data[i + em.X].getContent();
bool have_air = c_above == CONTENT_AIR;
for (s16 y = node_max.Y; y >= node_min.Y; y--) {
content_t c = vm->m_data[i].getContent();
// It could be the case that the elevation is equal to the chunk
// boundary, but the chunk above has not been generated yet
if (y == node_max.Y && c_above == CONTENT_IGNORE &&
y == heightmap[index] && c == c_stone) {
int j = z * zstride + y * ystride + x;
have_air = !getMountainTerrainFromMap(j, index, y);
}
if (c == c_stone && have_air) {
content_t c_below = vm->m_data[i - em.X].getContent();
if (c_below != CONTENT_AIR) {
if (nplaced < y0_top) {
// A hack to prevent dirt_with_grass from being
// placed below water. TODO: fix later
content_t c_place = ((y < water_level) &&
(biome->c_top == c_dirt_with_grass)) ?
c_dirt : biome->c_top;
vm->m_data[i] = MapNode(c_place);
nplaced++;
} else if (nplaced < y0_filler && nplaced >= y0_top) {
vm->m_data[i] = MapNode(biome->c_filler);
nplaced++;
} else {
have_air = false;
nplaced = 0;
}
}
} else if (c == c_water_source) {
have_air = true;
nplaced = 0;
vm->m_data[i] = MapNode(biome->c_water);
} else if (c == CONTENT_AIR) {
have_air = true;
nplaced = 0;
}
vm->m_area.add_y(em, i, -1);
}
}
// make an 80x80 grid with axes heat/humidity as a voroni diagram for biomes
// clear out y space for it first with air
// use absolute positioning, each chunk will be a +1 height
}*/
}
void MapgenV7::dustTopNodes() {
v3s16 em = vm->m_area.getExtent();
u32 index = 0;
if (water_level > node_max.Y)
return;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
Biome *biome = bmgr->biomes[biomemap[index]];
if (biome->c_dust == CONTENT_IGNORE)
continue;
s16 y = node_max.Y;
u32 vi = vm->m_area.index(x, y, z);
for (; y >= node_min.Y; y--) {
if (vm->m_data[vi].getContent() != CONTENT_AIR)
break;
vm->m_area.add_y(em, vi, -1);
}
content_t c = vm->m_data[vi].getContent();
if (c == biome->c_water && biome->c_dust_water != CONTENT_IGNORE) {
if (y < node_min.Y)
continue;
vm->m_data[vi] = MapNode(biome->c_dust_water);
} else if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE) {
if (y == node_max.Y)
continue;
vm->m_area.add_y(em, vi, 1);
vm->m_data[vi] = MapNode(biome->c_dust);
}
}
}
#if 0
void MapgenV7::addTopNodes() {
v3s16 em = vm->m_area.getExtent();
s16 ntopnodes;
@@ -511,6 +689,7 @@ void MapgenV7::addTopNodes() {
}
}
}
#endif
#include "mapgen_v6.h"

41
src/mapgen_v7.h
View File

@@ -24,25 +24,34 @@ with this program; if not, write to the Free Software Foundation, Inc.,
extern NoiseParams nparams_v7_def_terrain_base;
extern NoiseParams nparams_v7_def_terrain_alt;
extern NoiseParams nparams_v7_def_terrain_mod;
extern NoiseParams nparams_v7_def_terrain_persist;
extern NoiseParams nparams_v7_def_height_select;
extern NoiseParams nparams_v7_def_filler_depth;
extern NoiseParams nparams_v7_def_mount_height;
extern NoiseParams nparams_v7_def_ridge_uwater;
extern NoiseParams nparams_v7_def_mountain;
extern NoiseParams nparams_v7_def_ridge;
struct MapgenV7Params : public MapgenParams {
NoiseParams np_terrain_base;
NoiseParams np_terrain_alt;
NoiseParams np_terrain_mod;
NoiseParams np_terrain_persist;
NoiseParams np_height_select;
NoiseParams np_filler_depth;
NoiseParams np_mount_height;
NoiseParams np_ridge_uwater;
NoiseParams np_mountain;
NoiseParams np_ridge;
MapgenV7Params() {
np_terrain_base = nparams_v7_def_terrain_base;
np_terrain_alt = nparams_v7_def_terrain_alt;
np_terrain_mod = nparams_v7_def_terrain_mod;
np_terrain_persist = nparams_v7_def_terrain_persist;
np_height_select = nparams_v7_def_height_select;
np_filler_depth = nparams_v7_def_filler_depth;
np_mount_height = nparams_v7_def_mount_height;
np_ridge_uwater = nparams_v7_def_ridge_uwater;
np_mountain = nparams_v7_def_mountain;
np_ridge = nparams_v7_def_ridge;
}
@@ -58,8 +67,8 @@ public:
BiomeDefManager *bmgr;
int ystride;
int zstride;
u32 flags;
bool ridges;
u32 blockseed;
v3s16 node_min;
@@ -71,10 +80,12 @@ public:
Noise *noise_terrain_base;
Noise *noise_terrain_alt;
Noise *noise_terrain_mod;
Noise *noise_terrain_persist;
Noise *noise_height_select;
Noise *noise_filler_depth;
Noise *noise_mount_height;
Noise *noise_ridge_uwater;
Noise *noise_mountain;
Noise *noise_ridge;
Noise *noise_heat;
@@ -86,6 +97,7 @@ public:
content_t c_sand;
content_t c_water_source;
content_t c_lava_source;
content_t c_ice;
content_t c_gravel;
content_t c_cobble;
content_t c_desert_sand;
@@ -100,15 +112,20 @@ public:
float baseTerrainLevelAtPoint(int x, int z);
float baseTerrainLevelFromMap(int index);
bool getMountainTerrainAtPoint(int x, int y, int z);
bool getMountainTerrainFromMap(int idx_xyz, int idx_xz, int y);
void calculateNoise();
int calcHeightMap();
virtual void generateTerrain();
void carveRidges();
//void carveRivers(); //experimental
virtual int generateTerrain();
int generateBaseTerrain();
void generateMountainTerrain();
void generateRidgeTerrain();
void testBiomes();
void addTopNodes();
void generateBiomes();
void dustTopNodes();
//void addTopNodes();
void generateCaves(int max_stone_y);
};

38
src/script/lua_api/luaapi.cpp
View File

@@ -204,19 +204,33 @@ int ModApiBasic::l_register_biome(lua_State *L)
"terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
Biome *b = bmgr->createBiome(terrain);
b->name = getstringfield_default(L, index, "name", "");
b->top_nodename = getstringfield_default(L, index, "top_node", "");
b->top_depth = getintfield_default(L, index, "top_depth", 0);
b->filler_nodename = getstringfield_default(L, index, "filler_node", "");
b->filler_height = getintfield_default(L, index, "filler_height", 0);
b->height_min = getintfield_default(L, index, "height_min", 0);
b->height_max = getintfield_default(L, index, "height_max", 0);
b->heat_point = getfloatfield_default(L, index, "heat_point", 0.);
b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.);
b->name = getstringfield_default(L, index, "name",
"<no name>");
b->nname_top = getstringfield_default(L, index, "node_top",
"mapgen_dirt_with_grass");
b->nname_filler = getstringfield_default(L, index, "node_filler",
"mapgen_dirt");
b->nname_water = getstringfield_default(L, index, "node_water",
"mapgen_water_source");
b->nname_dust = getstringfield_default(L, index, "node_dust",
"air");
b->nname_dust_water = getstringfield_default(L, index, "node_dust_water",
"mapgen_water_source");
b->depth_top = getintfield_default(L, index, "depth_top", 1);
b->depth_filler = getintfield_default(L, index, "depth_filler", 3);
b->height_min = getintfield_default(L, index, "height_min", 0);
b->height_max = getintfield_default(L, index, "height_max", 0);
b->heat_point = getfloatfield_default(L, index, "heat_point", 0.);
b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.);
b->flags = 0; //reserved
b->c_top = CONTENT_IGNORE;
b->c_filler = CONTENT_IGNORE;
b->flags = 0; //reserved
b->c_top = CONTENT_IGNORE;
b->c_filler = CONTENT_IGNORE;
b->c_water = CONTENT_IGNORE;
b->c_dust = CONTENT_IGNORE;
b->c_dust_water = CONTENT_IGNORE;
verbosestream << "register_biome: " << b->name << std::endl;
bmgr->addBiome(b);