void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
u32 blockseed, v3s16 nmin, v3s16 nmax) {
PseudoRandom pr(blockseed);
MapNode n_ore(ore, 0, ore_param2);
int volume = (nmax.X - nmin.X + 1) *
(nmax.Y - nmin.Y + 1) *
(nmax.Z - nmin.Z + 1);
int csize = clust_size;
int orechance = (csize * csize * csize) / clust_num_ores;
int nclusters = volume / clust_scarcity;
for (int i = 0; i != nclusters; i++) {
int x0 = pr.range(nmin.X, nmax.X - csize + 1);
int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
if (np && (NoisePerlin3D(np, x0, y0, z0, seed) < nthresh))
continue;
for (int z1 = 0; z1 != csize; z1++)
for (int y1 = 0; y1 != csize; y1++)
for (int x1 = 0; x1 != csize; x1++) {
if (pr.range(1, orechance) != 1)
continue;
u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
for (size_t ii = 0; ii < wherein.size(); ii++)
if (vm->m_data[i].getContent() == wherein[ii])
vm->m_data[i] = n_ore;
}
}
}
void OreStratum::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PcgRandom pr(blockseed + 4234);
MapNode n_ore(c_ore, 0, ore_param2);
if (flags & OREFLAG_USE_NOISE) {
if (!(noise && noise_stratum_thickness)) {
int sx = nmax.X - nmin.X + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, 0, sx, sz);
noise_stratum_thickness = new Noise(&np_stratum_thickness, 0, sx, sz);
}
noise->perlinMap2D(nmin.X, nmin.Z);
noise_stratum_thickness->perlinMap2D(nmin.X, nmin.Z);
}
size_t index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int x = nmin.X; x <= nmax.X; x++, index++) {
if (biomemap && !biomes.empty()) {
std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[index]);
if (it == biomes.end())
continue;
}
int y0;
int y1;
if (flags & OREFLAG_USE_NOISE) {
float nmid = noise->result[index];
float nhalfthick = noise_stratum_thickness->result[index] / 2.0f;
y0 = MYMAX(nmin.Y, nmid - nhalfthick);
y1 = MYMIN(nmax.Y, nmid + nhalfthick);
} else {
y0 = nmin.Y;
y1 = nmax.Y;
}
for (int y = y0; y <= y1; y++) {
if (pr.range(1, clust_scarcity) != 1)
continue;
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreBlob::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax)
{
PseudoRandom pr(blockseed + 2404);
MapNode n_ore(c_ore, 0, ore_param2);
int volume = (nmax.X - nmin.X + 1) *
(nmax.Y - nmin.Y + 1) *
(nmax.Z - nmin.Z + 1);
int csize = clust_size;
int nblobs = volume / clust_scarcity;
if (!noise)
noise = new Noise(&np, mapseed, csize, csize, csize);
for (int i = 0; i != nblobs; i++) {
int x0 = pr.range(nmin.X, nmax.X - csize + 1);
int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
bool noise_generated = false;
noise->seed = blockseed + i;
size_t index = 0;
for (int z1 = 0; z1 != csize; z1++)
for (int y1 = 0; y1 != csize; y1++)
for (int x1 = 0; x1 != csize; x1++, index++) {
u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
// Lazily generate noise only if there's a chance of ore being placed
// This simple optimization makes calls 6x faster on average
if (!noise_generated) {
noise_generated = true;
noise->perlinMap3D(x0, y0, z0);
}
float noiseval = noise->result[index];
float xdist = x1 - csize / 2;
float ydist = y1 - csize / 2;
float zdist = z1 - csize / 2;
noiseval -= (sqrt(xdist * xdist + ydist * ydist + zdist * zdist) / csize);
if (noiseval < nthresh)
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreVein::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PcgRandom pr(blockseed + 520);
MapNode n_ore(c_ore, 0, ore_param2);
u32 sizex = (nmax.X - nmin.X + 1);
if (!noise) {
int sx = nmax.X - nmin.X + 1;
int sy = nmax.Y - nmin.Y + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, mapseed, sx, sy, sz);
noise2 = new Noise(&np, mapseed + 436, sx, sy, sz);
}
bool noise_generated = false;
size_t index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int y = nmin.Y; y <= nmax.Y; y++)
for (int x = nmin.X; x <= nmax.X; x++, index++) {
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
if (biomemap && !biomes.empty()) {
u32 bmapidx = sizex * (z - nmin.Z) + (x - nmin.X);
std::set<u8>::iterator it = biomes.find(biomemap[bmapidx]);
if (it == biomes.end())
continue;
}
// Same lazy generation optimization as in OreBlob
if (!noise_generated) {
noise_generated = true;
noise->perlinMap3D(nmin.X, nmin.Y, nmin.Z);
noise2->perlinMap3D(nmin.X, nmin.Y, nmin.Z);
}
// randval ranges from -1..1
float randval = (float)pr.next() / (pr.RANDOM_RANGE / 2) - 1.f;
float noiseval = contour(noise->result[index]);
float noiseval2 = contour(noise2->result[index]);
if (noiseval * noiseval2 + randval * random_factor < nthresh)
continue;
vm->m_data[i] = n_ore;
}
}
void OreSheet::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PcgRandom pr(blockseed + 4234);
MapNode n_ore(c_ore, 0, ore_param2);
u16 max_height = column_height_max;
int y_start_min = nmin.Y + max_height;
int y_start_max = nmax.Y - max_height;
int y_start = y_start_min < y_start_max ?
pr.range(y_start_min, y_start_max) :
(y_start_min + y_start_max) / 2;
if (!noise) {
int sx = nmax.X - nmin.X + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, 0, sx, sz);
}
noise->seed = mapseed + y_start;
noise->perlinMap2D(nmin.X, nmin.Z);
size_t index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int x = nmin.X; x <= nmax.X; x++, index++) {
float noiseval = noise->result[index];
if (noiseval < nthresh)
continue;
if (biomemap && !biomes.empty()) {
std::set<u8>::iterator it = biomes.find(biomemap[index]);
if (it == biomes.end())
continue;
}
u16 height = pr.range(column_height_min, column_height_max);
int ymidpoint = y_start + noiseval;
int y0 = MYMAX(nmin.Y, ymidpoint - height * (1 - column_midpoint_factor));
int y1 = MYMIN(nmax.Y, y0 + height - 1);
for (int y = y0; y <= y1; y++) {
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreScatter::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PcgRandom pr(blockseed);
MapNode n_ore(c_ore, 0, ore_param2);
u32 sizex = (nmax.X - nmin.X + 1);
u32 volume = (nmax.X - nmin.X + 1) *
(nmax.Y - nmin.Y + 1) *
(nmax.Z - nmin.Z + 1);
u32 csize = clust_size;
u32 cvolume = csize * csize * csize;
u32 nclusters = volume / clust_scarcity;
if (clust_scarcity > volume && 1 >= pr.range(0, clust_scarcity/volume))
nclusters = 1;
for (u32 i = 0; i != nclusters; i++) {
int x0 = pr.range(nmin.X, nmax.X - csize + 1);
int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
if ((flags & OREFLAG_USE_NOISE) &&
(NoisePerlin3D(&np, x0, y0, z0, mapseed) < nthresh))
continue;
if (biomemap && !biomes.empty()) {
u32 index = sizex * (z0 - nmin.Z) + (x0 - nmin.X);
std::set<u8>::iterator it = biomes.find(biomemap[index]);
if (it == biomes.end())
continue;
}
for (u32 z1 = 0; z1 != csize; z1++)
for (u32 y1 = 0; y1 != csize; y1++)
for (u32 x1 = 0; x1 != csize; x1++) {
if (pr.range(1, cvolume) > clust_num_ores)
continue;
u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreSheet::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PseudoRandom pr(blockseed + 4234);
MapNode n_ore(c_ore, 0, ore_param2);
int max_height = clust_size;
int y_start = pr.range(nmin.Y, nmax.Y - max_height);
if (!noise) {
int sx = nmax.X - nmin.X + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, 0, sx, sz);
}
noise->seed = mapseed + y_start;
noise->perlinMap2D(nmin.X, nmin.Z);
size_t index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int x = nmin.X; x <= nmax.X; x++, index++) {
float noiseval = noise->result[index];
if (noiseval < nthresh)
continue;
if (biomemap && !biomes.empty()) {
std::set<u8>::iterator it = biomes.find(biomemap[index]);
if (it == biomes.end())
continue;
}
int height = max_height * (1. / pr.range(1, 3));
int y0 = y_start + np.scale * noiseval; //pr.range(1, 3) - 1;
int y1 = y0 + height;
for (int y = y0; y != y1; y++) {
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreVein::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax)
{
PseudoRandom pr(blockseed + 520);
MapNode n_ore(c_ore, 0, ore_param2);
if (!noise) {
int sx = nmax.X - nmin.X + 1;
int sy = nmax.Y - nmin.Y + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, mapseed, sx, sy, sz);
noise2 = new Noise(&np, mapseed + 436, sx, sy, sz);
}
bool noise_generated = false;
size_t index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int y = nmin.Y; y <= nmax.Y; y++)
for (int x = nmin.X; x <= nmax.X; x++, index++) {
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
// Same lazy generation optimization as in OreBlob
if (!noise_generated) {
noise_generated = true;
noise->perlinMap3D(nmin.X, nmin.Y, nmin.Z);
noise2->perlinMap3D(nmin.X, nmin.Y, nmin.Z);
}
// randval ranges from -1..1
float randval = (float)pr.next() / (PSEUDORANDOM_MAX / 2) - 1.f;
float noiseval = contour(noise->result[index]);
float noiseval2 = contour(noise2->result[index]);
if (noiseval * noiseval2 + randval * random_factor < nthresh)
continue;
vm->m_data[i] = n_ore;
}
}
void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
u32 blockseed, v3s16 nmin, v3s16 nmax)
{
PseudoRandom pr(blockseed + 4234);
MapNode n_ore(c_ore, 0, ore_param2);
int max_height = clust_size;
int y_start = pr.range(nmin.Y, nmax.Y - max_height);
if (!noise) {
int sx = nmax.X - nmin.X + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, seed, sx, sz);
}
noise->seed = seed + y_start;
noise->perlinMap2D(nmin.X, nmin.Z);
int index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int x = nmin.X; x <= nmax.X; x++) {
float noiseval = noise->result[index++];
if (noiseval < nthresh)
continue;
int height = max_height * (1. / pr.range(1, 3));
int y0 = y_start + np.scale * noiseval; //pr.range(1, 3) - 1;
int y1 = y0 + height;
for (int y = y0; y != y1; y++) {
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreScatter::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax)
{
PseudoRandom pr(blockseed);
MapNode n_ore(c_ore, 0, ore_param2);
int volume = (nmax.X - nmin.X + 1) *
(nmax.Y - nmin.Y + 1) *
(nmax.Z - nmin.Z + 1);
int csize = clust_size;
int orechance = (csize * csize * csize) / clust_num_ores;
int nclusters = volume / clust_scarcity;
for (int i = 0; i != nclusters; i++) {
int x0 = pr.range(nmin.X, nmax.X - csize + 1);
int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
if ((flags & OREFLAG_USE_NOISE) &&
(NoisePerlin3D(&np, x0, y0, z0, mapseed) < nthresh))
continue;
for (int z1 = 0; z1 != csize; z1++)
for (int y1 = 0; y1 != csize; y1++)
for (int x1 = 0; x1 != csize; x1++) {
if (pr.range(1, orechance) != 1)
continue;
u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}
void OreBlob::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PcgRandom pr(blockseed + 2404);
MapNode n_ore(c_ore, 0, ore_param2);
u32 sizex = (nmax.X - nmin.X + 1);
u32 volume = (nmax.X - nmin.X + 1) *
(nmax.Y - nmin.Y + 1) *
(nmax.Z - nmin.Z + 1);
u32 csize = clust_size;
u32 nblobs = volume / clust_scarcity;
if (!noise)
noise = new Noise(&np, mapseed, csize, csize, csize);
for (u32 i = 0; i != nblobs; i++) {
int x0 = pr.range(nmin.X, nmax.X - csize + 1);
int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
if (biomemap && !biomes.empty()) {
u32 bmapidx = sizex * (z0 - nmin.Z) + (x0 - nmin.X);
std::set<u8>::iterator it = biomes.find(biomemap[bmapidx]);
if (it == biomes.end())
continue;
}
bool noise_generated = false;
noise->seed = blockseed + i;
size_t index = 0;
for (u32 z1 = 0; z1 != csize; z1++)
for (u32 y1 = 0; y1 != csize; y1++)
for (u32 x1 = 0; x1 != csize; x1++, index++) {
u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
// Lazily generate noise only if there's a chance of ore being placed
// This simple optimization makes calls 6x faster on average
if (!noise_generated) {
noise_generated = true;
noise->perlinMap3D(x0, y0, z0);
}
float noiseval = noise->result[index];
float xdist = (s32)x1 - (s32)csize / 2;
float ydist = (s32)y1 - (s32)csize / 2;
float zdist = (s32)z1 - (s32)csize / 2;
noiseval -= (sqrt(xdist * xdist + ydist * ydist + zdist * zdist) / csize);
if (noiseval < nthresh)
continue;
vm->m_data[i] = n_ore;
}
}
}
void OrePuff::generate(MMVManip *vm, int mapseed, u32 blockseed,
v3s16 nmin, v3s16 nmax, u8 *biomemap)
{
PcgRandom pr(blockseed + 4234);
MapNode n_ore(c_ore, 0, ore_param2);
int y_start = pr.range(nmin.Y, nmax.Y);
if (!noise) {
int sx = nmax.X - nmin.X + 1;
int sz = nmax.Z - nmin.Z + 1;
noise = new Noise(&np, 0, sx, sz);
noise_puff_top = new Noise(&np_puff_top, 0, sx, sz);
noise_puff_bottom = new Noise(&np_puff_bottom, 0, sx, sz);
}
noise->seed = mapseed + y_start;
noise->perlinMap2D(nmin.X, nmin.Z);
bool noise_generated = false;
size_t index = 0;
for (int z = nmin.Z; z <= nmax.Z; z++)
for (int x = nmin.X; x <= nmax.X; x++, index++) {
float noiseval = noise->result[index];
if (noiseval < nthresh)
continue;
if (biomemap && !biomes.empty()) {
std::set<u8>::iterator it = biomes.find(biomemap[index]);
if (it == biomes.end())
continue;
}
if (!noise_generated) {
noise_generated = true;
noise_puff_top->perlinMap2D(nmin.X, nmin.Z);
noise_puff_bottom->perlinMap2D(nmin.X, nmin.Z);
}
float ntop = noise_puff_top->result[index];
float nbottom = noise_puff_bottom->result[index];
if (!(flags & OREFLAG_PUFF_CLIFFS)) {
float ndiff = noiseval - nthresh;
if (ndiff < 1.0f) {
ntop *= ndiff;
nbottom *= ndiff;
}
}
int ymid = y_start;
int y0 = ymid - nbottom;
int y1 = ymid + ntop;
if ((flags & OREFLAG_PUFF_ADDITIVE) && (y0 > y1))
SWAP(int, y0, y1);
for (int y = y0; y <= y1; y++) {
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
continue;
vm->m_data[i] = n_ore;
}
}
}