mirror of
https://github.com/moparisthebest/minetest
synced 2024-11-07 09:55:09 -05:00
320 lines
7.6 KiB
C++
320 lines
7.6 KiB
C++
/*
|
|
Minetest
|
|
Copyright (C) 2010-2014 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 "util/numeric.h"
|
|
#include "map.h"
|
|
#include "log.h"
|
|
|
|
const char *OreManager::ELEMENT_TITLE = "ore";
|
|
|
|
FlagDesc flagdesc_ore[] = {
|
|
{"absheight", OREFLAG_ABSHEIGHT},
|
|
{NULL, 0}
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
OreManager::OreManager(IGameDef *gamedef) :
|
|
GenElementManager(gamedef)
|
|
{
|
|
}
|
|
|
|
|
|
size_t OreManager::placeAllOres(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
|
|
{
|
|
size_t nplaced = 0;
|
|
|
|
for (size_t i = 0; i != m_elements.size(); i++) {
|
|
Ore *ore = (Ore *)m_elements[i];
|
|
if (!ore)
|
|
continue;
|
|
|
|
nplaced += ore->placeOre(mg, blockseed, nmin, nmax);
|
|
blockseed++;
|
|
}
|
|
|
|
return nplaced;
|
|
}
|
|
|
|
|
|
void OreManager::clear()
|
|
{
|
|
for (size_t i = 0; i < m_elements.size(); i++) {
|
|
Ore *ore = (Ore *)m_elements[i];
|
|
delete ore;
|
|
}
|
|
m_elements.clear();
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
Ore::Ore()
|
|
{
|
|
flags = 0;
|
|
noise = NULL;
|
|
}
|
|
|
|
|
|
Ore::~Ore()
|
|
{
|
|
delete noise;
|
|
}
|
|
|
|
|
|
void Ore::resolveNodeNames(NodeResolveInfo *nri)
|
|
{
|
|
m_ndef->getIdFromResolveInfo(nri, "", CONTENT_AIR, c_ore);
|
|
m_ndef->getIdsFromResolveInfo(nri, c_wherein);
|
|
}
|
|
|
|
|
|
size_t Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
|
|
{
|
|
int in_range = 0;
|
|
|
|
in_range |= (nmin.Y <= y_max && nmax.Y >= y_min);
|
|
if (flags & OREFLAG_ABSHEIGHT)
|
|
in_range |= (nmin.Y >= -y_max && nmax.Y <= -y_min) << 1;
|
|
if (!in_range)
|
|
return 0;
|
|
|
|
int actual_ymin, actual_ymax;
|
|
if (in_range & ORE_RANGE_MIRROR) {
|
|
actual_ymin = MYMAX(nmin.Y, -y_max);
|
|
actual_ymax = MYMIN(nmax.Y, -y_min);
|
|
} else {
|
|
actual_ymin = MYMAX(nmin.Y, y_min);
|
|
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);
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
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 OreSheet::generate(MMVManip *vm, int mapseed, 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, 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++) {
|
|
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 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
OreVein::OreVein()
|
|
{
|
|
noise2 = NULL;
|
|
}
|
|
|
|
|
|
OreVein::~OreVein()
|
|
{
|
|
delete noise2;
|
|
}
|
|
|
|
|
|
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;
|
|
}
|
|
}
|