BRNSystems/minetest
1
0
Fork 0
forked from Mirrorlandia_minetest/minetest
Code Pull Requests 1 Activity

Mgv7: Code cleanup (#7299)

Browse Source
This commit is contained in:
Paramat 2018-05-07 03:31:55 +01:00 committed by GitHub
parent d99a033fd6
commit 4ccd18d5ec
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 122 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

212
src/mapgen/mapgen_v7.cpp
View File

@ -29,6 +29,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#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"
@ -48,7 +49,7 @@ FlagDesc flagdesc_mapgen_v7[] = {
};
///////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
@ -56,13 +57,14 @@ MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
{
spflags = params->spflags;
mount_zero_level = params->mount_zero_level;
cave_width = params->cave_width;
large_cave_depth = params->large_cave_depth;
lava_depth = params->lava_depth;
float_mount_density = params->float_mount_density;
float_mount_exponent = params->float_mount_exponent;
floatland_level = params->floatland_level;
shadow_limit = params->shadow_limit;
cave_width = params->cave_width;
large_cave_depth = params->large_cave_depth;
lava_depth = params->lava_depth;
cavern_limit = params->cavern_limit;
cavern_taper = params->cavern_taper;
cavern_threshold = params->cavern_threshold;
@ -71,32 +73,45 @@ MapgenV7::MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge)
// This is to avoid a divide-by-zero.
// Parameter will be saved to map_meta.txt in limited form.
params->float_mount_height = MYMAX(params->float_mount_height, 1.0f);
params->float_mount_height = std::fmax(params->float_mount_height, 1.0f);
float_mount_height = params->float_mount_height;
// 2D 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_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_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
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_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_filler_depth =
new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
if (spflags & MGV7_MOUNTAINS)
noise_mount_height = new Noise(&params->np_mount_height, seed, csize.X, csize.Z);
noise_mount_height =
new Noise(&params->np_mount_height, seed, csize.X, csize.Z);
if (spflags & MGV7_FLOATLANDS) {
noise_floatland_base = new Noise(&params->np_floatland_base, seed, csize.X, csize.Z);
noise_float_base_height = new Noise(&params->np_float_base_height, seed, csize.X, csize.Z);
noise_floatland_base =
new Noise(&params->np_floatland_base, seed, csize.X, csize.Z);
noise_float_base_height =
new Noise(&params->np_float_base_height, seed, csize.X, csize.Z);
}
if (spflags & MGV7_RIDGES) {
noise_ridge_uwater = new Noise(&params->np_ridge_uwater, seed, csize.X, csize.Z);
// 3D noise, 1-up 1-down overgeneration
noise_ridge = new Noise(&params->np_ridge, seed, csize.X, csize.Y + 2, csize.Z);
noise_ridge_uwater =
new Noise(&params->np_ridge_uwater, seed, csize.X, csize.Z);
// 3D noise, 1 up, 1 down overgeneration
noise_ridge =
new Noise(&params->np_ridge, seed, csize.X, csize.Y + 2, csize.Z);
}
// 3D noise, 1 up, 1 down overgeneration
if ((spflags & MGV7_MOUNTAINS) || (spflags & MGV7_FLOATLANDS))
noise_mountain = new Noise(&params->np_mountain, seed, csize.X, csize.Y + 2, csize.Z);
noise_mountain =
new Noise(&params->np_mountain, seed, csize.X, csize.Y + 2, csize.Z);
// 3D noise, 1 down overgeneration
MapgenBasic::np_cave1 = params->np_cave1;
MapgenBasic::np_cave2 = params->np_cave2;
@ -131,27 +146,27 @@ MapgenV7::~MapgenV7()
MapgenV7Params::MapgenV7Params():
np_terrain_base (4, 70, v3f(600, 600, 600), 82341, 5, 0.6, 2.0),
np_terrain_alt (4, 25, v3f(600, 600, 600), 5934, 5, 0.6, 2.0),
np_terrain_persist (0.6, 0.1, v3f(2000, 2000, 2000), 539, 3, 0.6, 2.0),
np_height_select (-8, 16, v3f(500, 500, 500), 4213, 6, 0.7, 2.0),
np_filler_depth (0, 1.2, v3f(150, 150, 150), 261, 3, 0.7, 2.0),
np_mount_height (256, 112, v3f(1000, 1000, 1000), 72449, 3, 0.6, 2.0),
np_ridge_uwater (0, 1, v3f(1000, 1000, 1000), 85039, 5, 0.6, 2.0),
np_floatland_base (-0.6, 1.5, v3f(600, 600, 600), 114, 5, 0.6, 2.0),
np_float_base_height (48, 24, v3f(300, 300, 300), 907, 4, 0.7, 2.0),
np_mountain (-0.6, 1, v3f(250, 350, 250), 5333, 5, 0.63, 2.0),
np_ridge (0, 1, v3f(100, 100, 100), 6467, 4, 0.75, 2.0),
np_cavern (0, 1, 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_terrain_base (4.0, 70.0, v3f(600, 600, 600), 82341, 5, 0.6, 2.0),
np_terrain_alt (4.0, 25.0, v3f(600, 600, 600), 5934, 5, 0.6, 2.0),
np_terrain_persist (0.6, 0.1, v3f(2000, 2000, 2000), 539, 3, 0.6, 2.0),
np_height_select (-8.0, 16.0, v3f(500, 500, 500), 4213, 6, 0.7, 2.0),
np_filler_depth (0.0, 1.2, v3f(150, 150, 150), 261, 3, 0.7, 2.0),
np_mount_height (256.0, 112.0, v3f(1000, 1000, 1000), 72449, 3, 0.6, 2.0),
np_ridge_uwater (0.0, 1.0, v3f(1000, 1000, 1000), 85039, 5, 0.6, 2.0),
np_floatland_base (-0.6, 1.5, v3f(600, 600, 600), 114, 5, 0.6, 2.0),
np_float_base_height (48.0, 24.0, v3f(300, 300, 300), 907, 4, 0.7, 2.0),
np_mountain (-0.6, 1.0, v3f(250, 350, 250), 5333, 5, 0.63, 2.0),
np_ridge (0.0, 1.0, v3f(100, 100, 100), 6467, 4, 0.75, 2.0),
np_cavern (0.0, 1.0, v3f(384, 128, 384), 723, 5, 0.63, 2.0),
np_cave1 (0.0, 12.0, v3f(61, 61, 61), 52534, 3, 0.5, 2.0),
np_cave2 (0.0, 12.0, v3f(67, 67, 67), 10325, 3, 0.5, 2.0)
{
}
void MapgenV7Params::readParams(const Settings *settings)
{
settings->getFlagStrNoEx("mgv7_spflags", spflags, flagdesc_mapgen_v7);
settings->getFlagStrNoEx("mgv7_spflags", spflags, flagdesc_mapgen_v7);
settings->getS16NoEx("mgv7_mount_zero_level", mount_zero_level);
settings->getFloatNoEx("mgv7_cave_width", cave_width);
settings->getS16NoEx("mgv7_large_cave_depth", large_cave_depth);
@ -186,7 +201,7 @@ void MapgenV7Params::readParams(const Settings *settings)
void MapgenV7Params::writeParams(Settings *settings) const
{
settings->setFlagStr("mgv7_spflags", spflags, flagdesc_mapgen_v7, U32_MAX);
settings->setFlagStr("mgv7_spflags", spflags, flagdesc_mapgen_v7, U32_MAX);
settings->setS16("mgv7_mount_zero_level", mount_zero_level);
settings->setFloat("mgv7_cave_width", cave_width);
settings->setS16("mgv7_large_cave_depth", large_cave_depth);
@ -219,17 +234,18 @@ void MapgenV7Params::writeParams(Settings *settings) const
}
///////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
int MapgenV7::getSpawnLevelAtPoint(v2s16 p)
{
// If rivers are enabled, first check if in a river
if (spflags & MGV7_RIDGES) {
float width = 0.2;
float uwatern = NoisePerlin2D(&noise_ridge_uwater->np, p.X, p.Y, seed) * 2;
float width = 0.2f;
float uwatern = NoisePerlin2D(&noise_ridge_uwater->np, p.X, p.Y, seed) *
2.0f;
if (std::fabs(uwatern) <= width)
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
}
// Terrain noise 'offset' is the average level of that terrain.
@ -237,7 +253,7 @@ int MapgenV7::getSpawnLevelAtPoint(v2s16 p)
// 'offset's.
// Raising the maximum spawn level above 'water_level + 16' is necessary
// for when terrain 'offset's are set much higher than water_level.
s16 max_spawn_y = MYMAX(MYMAX(noise_terrain_alt->np.offset,
s16 max_spawn_y = std::fmax(std::fmax(noise_terrain_alt->np.offset,
noise_terrain_base->np.offset),
water_level + 16);
// Base terrain calculation
@ -247,7 +263,7 @@ int MapgenV7::getSpawnLevelAtPoint(v2s16 p)
// Avoids mid-air spawn where mountain terrain would have been.
if (!(spflags & MGV7_MOUNTAINS)) {
if (y < water_level || y > max_spawn_y)
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
// y + 2 because y is surface level and due to biome 'dust'
return y + 2;
@ -258,7 +274,7 @@ int MapgenV7::getSpawnLevelAtPoint(v2s16 p)
while (iters > 0 && y <= max_spawn_y) {
if (!getMountainTerrainAtPoint(p.X, y + 1, p.Y)) {
if (y <= water_level || y > max_spawn_y)
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
// y + 1 due to biome 'dust'
return y + 1;
@ -284,11 +300,12 @@ void MapgenV7::makeChunk(BlockMakeData *data)
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;
//TimeTaker t("makeChunk");
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;
@ -299,7 +316,6 @@ void MapgenV7::makeChunk(BlockMakeData *data)
blockseed = getBlockSeed2(full_node_min, seed);
// Generate base and mountain terrain
// An initial heightmap is no longer created here for use in generateRidgeTerrain()
s16 stone_surface_max_y = generateTerrain();
// Generate rivers
@ -349,13 +365,11 @@ void MapgenV7::makeChunk(BlockMakeData *data)
// Sprinkle some dust on top after everything else was generated
dustTopNodes();
//printf("makeChunk: %dms\n", t.stop());
// Update liquids
updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
// Calculate lighting
// Limit floatland shadow
// Calculate lighting.
// Limit floatland shadow.
bool propagate_shadow = !((spflags & MGV7_FLOATLANDS) &&
node_min.Y <= shadow_limit && node_max.Y >= shadow_limit);
@ -363,17 +377,19 @@ void MapgenV7::makeChunk(BlockMakeData *data)
calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0),
full_node_min, full_node_max, propagate_shadow);
//setLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
// node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE, 0xFF);
this->generating = false;
//printf("makeChunk: %lums\n", t.stop());
}
////////////////////////////////////////////////////////////////////////////////
float MapgenV7::baseTerrainLevelAtPoint(s16 x, s16 z)
{
float hselect = NoisePerlin2D(&noise_height_select->np, x, z, seed);
hselect = rangelim(hselect, 0.0, 1.0);
hselect = rangelim(hselect, 0.0f, 1.0f);
float persist = NoisePerlin2D(&noise_terrain_persist->np, x, z, seed);
@ -386,41 +402,41 @@ float MapgenV7::baseTerrainLevelAtPoint(s16 x, s16 z)
if (height_alt > height_base)
return height_alt;
return (height_base * hselect) + (height_alt * (1.0 - hselect));
return (height_base * hselect) + (height_alt * (1.0f - hselect));
}
float MapgenV7::baseTerrainLevelFromMap(int index)
{
float hselect = rangelim(noise_height_select->result[index], 0.0, 1.0);
float hselect = rangelim(noise_height_select->result[index], 0.0f, 1.0f);
float height_base = noise_terrain_base->result[index];
float height_alt = noise_terrain_alt->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));
return (height_base * hselect) + (height_alt * (1.0f - hselect));
}
bool MapgenV7::getMountainTerrainAtPoint(s16 x, s16 y, s16 z)
{
float mnt_h_n =
MYMAX(NoisePerlin2D(&noise_mount_height->np, x, z, seed), 1.0f);
std::fmax(NoisePerlin2D(&noise_mount_height->np, x, z, seed), 1.0f);
float density_gradient = -((float)(y - mount_zero_level) / mnt_h_n);
float mnt_n = NoisePerlin3D(&noise_mountain->np, x, y, z, seed);
return mnt_n + density_gradient >= 0.0;
return mnt_n + density_gradient >= 0.0f;
}
bool MapgenV7::getMountainTerrainFromMap(int idx_xyz, int idx_xz, s16 y)
{
float mounthn = MYMAX(noise_mount_height->result[idx_xz], 1.0f);
float mounthn = std::fmax(noise_mount_height->result[idx_xz], 1.0f);
float density_gradient = -((float)(y - mount_zero_level) / mounthn);
float mountn = noise_mountain->result[idx_xyz];
return mountn + density_gradient >= 0.0;
return mountn + density_gradient >= 0.0f;
}
@ -439,7 +455,8 @@ bool MapgenV7::getFloatlandMountainFromMap(int idx_xyz, int idx_xz, s16 y)
}
void MapgenV7::floatBaseExtentFromMap(s16 *float_base_min, s16 *float_base_max, int idx_xz)
void MapgenV7::floatBaseExtentFromMap(s16 *float_base_min, s16 *float_base_max,
int idx_xz)
{
// '+1' to avoid a layer of stone at y = MAX_MAP_GENERATION_LIMIT
s16 base_min = MAX_MAP_GENERATION_LIMIT + 1;
@ -448,7 +465,7 @@ void MapgenV7::floatBaseExtentFromMap(s16 *float_base_min, s16 *float_base_max,
float n_base = noise_floatland_base->result[idx_xz];
if (n_base > 0.0f) {
float n_base_height =
MYMAX(noise_float_base_height->result[idx_xz], 1.0f);
std::fmax(noise_float_base_height->result[idx_xz], 1.0f);
float amp = n_base * n_base_height;
float ridge = n_base_height / 3.0f;
base_min = floatland_level - amp / 1.5f;
@ -518,31 +535,33 @@ int MapgenV7::generateTerrain()
u32 vi = vm->m_area.index(x, node_min.Y - 1, z);
u32 index3d = (z - node_min.Z) * zstride_1u1d + (x - node_min.X);
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
if (vm->m_data[vi].getContent() == CONTENT_IGNORE) {
if (y <= surface_y) {
vm->m_data[vi] = n_stone; // Base terrain
} else if ((spflags & MGV7_MOUNTAINS) &&
getMountainTerrainFromMap(index3d, index2d, y)) {
vm->m_data[vi] = n_stone; // Mountain terrain
if (y > stone_surface_max_y)
stone_surface_max_y = y;
} else if ((spflags & MGV7_FLOATLANDS) &&
((y >= float_base_min && y <= float_base_max) ||
getFloatlandMountainFromMap(index3d, index2d, y))) {
vm->m_data[vi] = n_stone; // Floatland terrain
stone_surface_max_y = node_max.Y;
} else if (y <= water_level) {
vm->m_data[vi] = n_water; // Ground level water
} else if ((spflags & MGV7_FLOATLANDS) &&
(y >= float_base_max && y <= floatland_level)) {
vm->m_data[vi] = n_water; // Floatland water
} else {
vm->m_data[vi] = n_air;
}
for (s16 y = node_min.Y - 1; y <= node_max.Y + 1;
y++,
index3d += ystride,
VoxelArea::add_y(em, vi, 1)) {
if (vm->m_data[vi].getContent() != CONTENT_IGNORE)
continue;
if (y <= surface_y) {
vm->m_data[vi] = n_stone; // Base terrain
} else if ((spflags & MGV7_MOUNTAINS) &&
getMountainTerrainFromMap(index3d, index2d, y)) {
vm->m_data[vi] = n_stone; // Mountain terrain
if (y > stone_surface_max_y)
stone_surface_max_y = y;
} else if ((spflags & MGV7_FLOATLANDS) &&
((y >= float_base_min && y <= float_base_max) ||
getFloatlandMountainFromMap(index3d, index2d, y))) {
vm->m_data[vi] = n_stone; // Floatland terrain
stone_surface_max_y = node_max.Y;
} else if (y <= water_level) {
vm->m_data[vi] = n_water; // Ground level water
} else if ((spflags & MGV7_FLOATLANDS) &&
(y >= float_base_max && y <= floatland_level)) {
vm->m_data[vi] = n_water; // Floatland water
} else {
vm->m_data[vi] = n_air;
}
VoxelArea::add_y(em, vi, 1);
index3d += ystride;
}
}
@ -561,25 +580,24 @@ void MapgenV7::generateRidgeTerrain()
MapNode n_water(c_water_source);
MapNode n_air(CONTENT_AIR);
u32 index = 0;
float width = 0.2;
u32 index3d = 0;
float width = 0.2f;
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++, index++, vi++) {
int j = (z - node_min.Z) * csize.X + (x - node_min.X);
float uwatern = noise_ridge_uwater->result[j] * 2;
for (s16 x = node_min.X; x <= node_max.X; x++, index3d++, vi++) {
u32 index2d = (z - node_min.Z) * csize.X + (x - node_min.X);
float uwatern = noise_ridge_uwater->result[index2d] * 2.0f;
if (std::fabs(uwatern) > width)
continue;
float altitude = y - water_level;
float height_mod = (altitude + 17) / 2.5;
float width_mod = width - std::fabs(uwatern);
float nridge = noise_ridge->result[index] * MYMAX(altitude, 0) / 7.0;
if (nridge + width_mod * height_mod < 0.6)
float height_mod = (altitude + 17.0f) / 2.5f;
float width_mod = width - std::fabs(uwatern);
float nridge = noise_ridge->result[index3d] *
std::fmax(altitude, 0.0f) / 7.0f;
if (nridge + width_mod * height_mod < 0.6f)
continue;
vm->m_data[vi] = (y > water_level) ? n_air : n_water;

11
src/mapgen/mapgen_v7.h
View File

@ -37,14 +37,15 @@ extern FlagDesc flagdesc_mapgen_v7[];
struct MapgenV7Params : public MapgenParams {
u32 spflags = MGV7_MOUNTAINS | MGV7_RIDGES | MGV7_CAVERNS;
s16 mount_zero_level = 0;
float cave_width = 0.09f;
s16 large_cave_depth = -33;
s16 lava_depth = -256;
float float_mount_density = 0.6f;
float float_mount_height = 128.0f;
float float_mount_exponent = 0.75f;
s16 floatland_level = 1280;
s16 shadow_limit = 1024;
float cave_width = 0.09f;
s16 large_cave_depth = -33;
s16 lava_depth = -256;
s16 cavern_limit = -256;
s16 cavern_taper = 256;
float cavern_threshold = 0.7f;
@ -73,6 +74,7 @@ struct MapgenV7Params : public MapgenParams {
void writeParams(Settings *settings) const;
};
class MapgenV7 : public MapgenBasic {
public:
MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge);
@ -95,12 +97,13 @@ public:
private:
s16 mount_zero_level;
s16 large_cave_depth;
float float_mount_density;
float float_mount_height;
float float_mount_exponent;
s16 floatland_level;
s16 shadow_limit;
s16 large_cave_depth;
s16 dungeon_ymin;
s16 dungeon_ymax;