mirror of
https://github.com/minetest/minetest.git
synced 2024-12-14 02:09:22 +01:00
601 lines
14 KiB
C++
601 lines
14 KiB
C++
/*
|
|
Minetest
|
|
Copyright (C) 2015-2020 paramat
|
|
Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
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 "mg_ore.h"
|
|
#include "mapgen.h"
|
|
#include "noise.h"
|
|
#include "map.h"
|
|
#include "log.h"
|
|
#include "util/numeric.h"
|
|
#include <cmath>
|
|
#include <algorithm>
|
|
|
|
|
|
FlagDesc flagdesc_ore[] = {
|
|
{"absheight", OREFLAG_ABSHEIGHT}, // Non-functional
|
|
{"puff_cliffs", OREFLAG_PUFF_CLIFFS},
|
|
{"puff_additive_composition", OREFLAG_PUFF_ADDITIVE},
|
|
{NULL, 0}
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
OreManager::OreManager(IGameDef *gamedef) :
|
|
ObjDefManager(gamedef, OBJDEF_ORE)
|
|
{
|
|
}
|
|
|
|
|
|
size_t OreManager::placeAllOres(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
|
|
{
|
|
size_t nplaced = 0;
|
|
|
|
for (size_t i = 0; i != m_objects.size(); i++) {
|
|
Ore *ore = (Ore *)m_objects[i];
|
|
if (!ore)
|
|
continue;
|
|
|
|
nplaced += ore->placeOre(mg, blockseed, nmin, nmax);
|
|
blockseed++;
|
|
}
|
|
|
|
return nplaced;
|
|
}
|
|
|
|
|
|
void OreManager::clear()
|
|
{
|
|
for (ObjDef *object : m_objects) {
|
|
Ore *ore = (Ore *) object;
|
|
delete ore;
|
|
}
|
|
m_objects.clear();
|
|
}
|
|
|
|
|
|
OreManager *OreManager::clone() const
|
|
{
|
|
auto mgr = new OreManager();
|
|
ObjDefManager::cloneTo(mgr);
|
|
return mgr;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
Ore::~Ore()
|
|
{
|
|
delete noise;
|
|
}
|
|
|
|
|
|
void Ore::resolveNodeNames()
|
|
{
|
|
getIdFromNrBacklog(&c_ore, "", CONTENT_AIR);
|
|
getIdsFromNrBacklog(&c_wherein);
|
|
}
|
|
|
|
|
|
size_t Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
|
|
{
|
|
if (nmin.Y > y_max || nmax.Y < y_min)
|
|
return 0;
|
|
|
|
int actual_ymin = MYMAX(nmin.Y, y_min);
|
|
int actual_ymax = MYMIN(nmax.Y, y_max);
|
|
if (clust_size >= actual_ymax - actual_ymin + 1)
|
|
return 0;
|
|
|
|
nmin.Y = actual_ymin;
|
|
nmax.Y = actual_ymax;
|
|
generate(mg->vm, mg->seed, blockseed, nmin, nmax, mg->biomemap);
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
void Ore::cloneTo(Ore *def) const
|
|
{
|
|
ObjDef::cloneTo(def);
|
|
NodeResolver::cloneTo(def);
|
|
def->c_ore = c_ore;
|
|
def->c_wherein = c_wherein;
|
|
def->clust_scarcity = clust_scarcity;
|
|
def->clust_num_ores = clust_num_ores;
|
|
def->clust_size = clust_size;
|
|
def->y_min = y_min;
|
|
def->y_max = y_max;
|
|
def->ore_param2 = ore_param2;
|
|
def->flags = flags;
|
|
def->nthresh = nthresh;
|
|
def->np = np;
|
|
def->noise = nullptr; // cannot be shared! so created on demand
|
|
def->biomes = biomes;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
ObjDef *OreScatter::clone() const
|
|
{
|
|
auto def = new OreScatter();
|
|
Ore::cloneTo(def);
|
|
return def;
|
|
}
|
|
|
|
|
|
void OreScatter::generate(MMVManip *vm, int mapseed, u32 blockseed,
|
|
v3s16 nmin, v3s16 nmax, biome_t *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;
|
|
|
|
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);
|
|
auto 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
ObjDef *OreSheet::clone() const
|
|
{
|
|
auto def = new OreSheet();
|
|
Ore::cloneTo(def);
|
|
|
|
def->column_height_max = column_height_max;
|
|
def->column_height_min = column_height_min;
|
|
def->column_midpoint_factor = column_midpoint_factor;
|
|
|
|
return def;
|
|
}
|
|
|
|
|
|
void OreSheet::generate(MMVManip *vm, int mapseed, u32 blockseed,
|
|
v3s16 nmin, v3s16 nmax, biome_t *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()) {
|
|
auto 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
OrePuff::~OrePuff()
|
|
{
|
|
delete noise_puff_top;
|
|
delete noise_puff_bottom;
|
|
}
|
|
|
|
|
|
ObjDef *OrePuff::clone() const
|
|
{
|
|
auto def = new OrePuff();
|
|
Ore::cloneTo(def);
|
|
|
|
def->np_puff_top = np_puff_top;
|
|
def->np_puff_bottom = np_puff_bottom;
|
|
def->noise_puff_top = nullptr; // cannot be shared, on-demand
|
|
def->noise_puff_bottom = nullptr;
|
|
|
|
return def;
|
|
}
|
|
|
|
|
|
void OrePuff::generate(MMVManip *vm, int mapseed, u32 blockseed,
|
|
v3s16 nmin, v3s16 nmax, biome_t *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()) {
|
|
auto 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
ObjDef *OreBlob::clone() const
|
|
{
|
|
auto def = new OreBlob();
|
|
Ore::cloneTo(def);
|
|
return def;
|
|
}
|
|
|
|
|
|
void OreBlob::generate(MMVManip *vm, int mapseed, u32 blockseed,
|
|
v3s16 nmin, v3s16 nmax, biome_t *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);
|
|
auto 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 -= std::sqrt(xdist * xdist + ydist * ydist + zdist * zdist) / csize;
|
|
|
|
if (noiseval < nthresh)
|
|
continue;
|
|
|
|
vm->m_data[i] = n_ore;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
OreVein::~OreVein()
|
|
{
|
|
delete noise2;
|
|
}
|
|
|
|
|
|
ObjDef *OreVein::clone() const
|
|
{
|
|
auto def = new OreVein();
|
|
Ore::cloneTo(def);
|
|
|
|
def->random_factor = random_factor;
|
|
def->noise2 = nullptr; // cannot be shared, on-demand
|
|
def->sizey_prev = sizey_prev;
|
|
|
|
return def;
|
|
}
|
|
|
|
|
|
void OreVein::generate(MMVManip *vm, int mapseed, u32 blockseed,
|
|
v3s16 nmin, v3s16 nmax, biome_t *biomemap)
|
|
{
|
|
PcgRandom pr(blockseed + 520);
|
|
MapNode n_ore(c_ore, 0, ore_param2);
|
|
|
|
int sizex = nmax.X - nmin.X + 1;
|
|
int sizey = nmax.Y - nmin.Y + 1;
|
|
// Because this ore uses 3D noise the perlinmap Y size can be different in
|
|
// different mapchunks due to ore Y limits. So recreate the noise objects
|
|
// if Y size has changed.
|
|
// Because these noise objects are created multiple times for this ore type
|
|
// it is necessary to 'delete' them here.
|
|
if (!noise || sizey != sizey_prev) {
|
|
delete noise;
|
|
delete noise2;
|
|
int sizez = nmax.Z - nmin.Z + 1;
|
|
noise = new Noise(&np, mapseed, sizex, sizey, sizez);
|
|
noise2 = new Noise(&np, mapseed + 436, sizex, sizey, sizez);
|
|
sizey_prev = sizey;
|
|
}
|
|
|
|
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);
|
|
auto 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
|
|
/*
|
|
Note: can generate values slightly larger than 1
|
|
but this can't be changed as mapgen must be deterministic accross versions.
|
|
*/
|
|
float randval = (float)pr.next() / float(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;
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
OreStratum::~OreStratum()
|
|
{
|
|
delete noise_stratum_thickness;
|
|
}
|
|
|
|
|
|
ObjDef *OreStratum::clone() const
|
|
{
|
|
auto def = new OreStratum();
|
|
Ore::cloneTo(def);
|
|
|
|
def->np_stratum_thickness = np_stratum_thickness;
|
|
def->noise_stratum_thickness = nullptr; // cannot be shared, on-demand
|
|
def->stratum_thickness = stratum_thickness;
|
|
|
|
return def;
|
|
}
|
|
|
|
|
|
void OreStratum::generate(MMVManip *vm, int mapseed, u32 blockseed,
|
|
v3s16 nmin, v3s16 nmax, biome_t *biomemap)
|
|
{
|
|
PcgRandom pr(blockseed + 4234);
|
|
MapNode n_ore(c_ore, 0, ore_param2);
|
|
|
|
if (flags & OREFLAG_USE_NOISE) {
|
|
if (!noise) {
|
|
int sx = nmax.X - nmin.X + 1;
|
|
int sz = nmax.Z - nmin.Z + 1;
|
|
noise = new Noise(&np, 0, sx, sz);
|
|
}
|
|
noise->perlinMap2D(nmin.X, nmin.Z);
|
|
}
|
|
|
|
if (flags & OREFLAG_USE_NOISE2) {
|
|
if (!noise_stratum_thickness) {
|
|
int sx = nmax.X - nmin.X + 1;
|
|
int sz = nmax.Z - nmin.Z + 1;
|
|
noise_stratum_thickness = new Noise(&np_stratum_thickness, 0, sx, sz);
|
|
}
|
|
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()) {
|
|
auto it = biomes.find(biomemap[index]);
|
|
if (it == biomes.end())
|
|
continue;
|
|
}
|
|
|
|
int y0;
|
|
int y1;
|
|
|
|
if (flags & OREFLAG_USE_NOISE) {
|
|
float nhalfthick = ((flags & OREFLAG_USE_NOISE2) ?
|
|
noise_stratum_thickness->result[index] : (float)stratum_thickness) /
|
|
2.0f;
|
|
float nmid = noise->result[index];
|
|
y0 = MYMAX(nmin.Y, std::ceil(nmid - nhalfthick));
|
|
y1 = MYMIN(nmax.Y, nmid + nhalfthick);
|
|
} else { // Simple horizontal stratum
|
|
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;
|
|
}
|
|
}
|
|
}
|