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-rw-r--r--src/mapgen.cpp378
1 files changed, 343 insertions, 35 deletions
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index 835c14be1..49ac827e1 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -87,7 +87,7 @@ void Ore::resolveNodeNames(INodeDefManager *ndef) {
wherein = CONTENT_AIR;
}
}
-
+
if (wherein == CONTENT_IGNORE) {
wherein = ndef->getId(wherein_name);
if (wherein == CONTENT_IGNORE) {
@@ -110,9 +110,8 @@ void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
return;
resolveNodeNames(mg->ndef);
-
+
int ymin, ymax;
-
if (in_range & ORE_RANGE_MIRROR) {
ymin = MYMAX(nmin.Y, -height_max);
ymax = MYMIN(nmax.Y, -height_min);
@@ -122,7 +121,7 @@ void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
}
if (clust_size >= ymax - ymin + 1)
return;
-
+
nmin.Y = ymin;
nmax.Y = ymax;
generate(mg->vm, mg->seed, blockseed, nmin, nmax);
@@ -130,7 +129,7 @@ void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
- u32 blockseed, v3s16 nmin, v3s16 nmax) {
+ u32 blockseed, v3s16 nmin, v3s16 nmax) {
PseudoRandom pr(blockseed);
MapNode n_ore(ore, 0, ore_param2);
@@ -145,16 +144,16 @@ void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
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);
if (vm->m_data[i].getContent() == wherein)
vm->m_data[i] = n_ore;
@@ -167,10 +166,10 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
u32 blockseed, v3s16 nmin, v3s16 nmax) {
PseudoRandom pr(blockseed + 4234);
MapNode n_ore(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;
@@ -178,14 +177,14 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
}
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;
@@ -193,7 +192,7 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
u32 i = vm->m_area.index(x, y, z);
if (!vm->m_area.contains(i))
continue;
-
+
if (vm->m_data[i].getContent() == wherein)
vm->m_data[i] = n_ore;
}
@@ -201,6 +200,316 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
}
+Decoration *createDecoration(DecorationType type) {
+ switch (type) {
+ case DECO_SIMPLE:
+ return new DecoSimple;
+ //case DECO_SCHEMATIC:
+ // return new DecoSchematic;
+ //case DECO_LSYSTEM:
+ // return new DecoLSystem;
+ default:
+ return NULL;
+ }
+}
+
+
+Decoration::~Decoration() {
+ delete np;
+}
+
+
+void Decoration::resolveNodeNames(INodeDefManager *ndef) {
+ if (c_place_on == CONTENT_IGNORE)
+ c_place_on = ndef->getId(place_on_name);
+}
+
+
+void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
+ resolveNodeNames(mg->ndef);
+
+ PseudoRandom ps(blockseed + 53);
+ int carea_size = nmax.X - nmin.X + 1;
+
+ // Divide area into parts
+ s16 sidelen = carea_size / divlen;
+ float area = sidelen * sidelen;
+
+ for (s16 z0 = 0; z0 < divlen; z0++)
+ for (s16 x0 = 0; x0 < divlen; x0++) {
+ v2s16 p2d_center( // Center position of part of division
+ nmin.X + sidelen / 2 + sidelen * x0,
+ nmin.Z + sidelen / 2 + sidelen * z0
+ );
+ v2s16 p2d_min( // Minimum edge of part of division
+ nmin.X + sidelen * x0,
+ nmin.Z + sidelen * z0
+ );
+ v2s16 p2d_max( // Maximum edge of part of division
+ nmin.X + sidelen + sidelen * x0 - 1,
+ nmin.Z + sidelen + sidelen * z0 - 1
+ );
+
+ // Amount of decorations
+ float nval = np ?
+ NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
+ fill_ratio;
+ u32 deco_count = area * MYMAX(nval, 0.f);
+
+ for (u32 i = 0; i < deco_count; i++) {
+ s16 x = ps.range(p2d_min.X, p2d_max.X);
+ s16 z = ps.range(p2d_min.Y, p2d_max.Y);
+
+ int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
+
+ s16 y = mg->heightmap ?
+ mg->heightmap[mapindex] :
+ mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
+
+ if (y < nmin.Y || y > nmax.Y)
+ continue;
+
+ int height = getHeight();
+ int max_y = nmax.Y + MAP_BLOCKSIZE;
+ if (y + 1 + height > max_y) {
+ continue;
+#if 0
+ printf("Decoration at (%d %d %d) cut off\n", x, y, z);
+ //add to queue
+ JMutexAutoLock cutofflock(cutoff_mutex);
+ cutoffs.push_back(CutoffData(x, y, z, height));
+#endif
+ }
+
+ if (mg->biomemap) {
+ std::set<u8>::iterator iter;
+
+ if (biomes.size()) {
+ iter = biomes.find(mg->biomemap[mapindex]);
+ if (iter == biomes.end())
+ continue;
+ }
+ }
+
+ generate(mg, &ps, max_y, 0, v3s16(x, y, z));
+ }
+ }
+}
+
+
+#if 0
+void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
+ PseudoRandom pr(blockseed + 53);
+ std::vector<CutoffData> handled_cutoffs;
+
+ // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
+ {
+ JMutexAutoLock cutofflock(cutoff_mutex);
+ for (std::list<CutoffData>::iterator i = cutoffs.begin();
+ i != cutoffs.end(); ++i) {
+ CutoffData cutoff = *i;
+ v3s16 p = cutoff.p;
+ s16 height = cutoff.height;
+ if (p.X < nmin.X || p.X > nmax.X ||
+ p.Z < nmin.Z || p.Z > nmax.Z)
+ continue;
+ if (p.Y + height < nmin.Y || p.Y > nmax.Y)
+ continue;
+
+ handled_cutoffs.push_back(cutoff);
+ }
+ }
+
+ // Generate the cutoffs
+ for (size_t i = 0; i != handled_cutoffs.size(); i++) {
+ v3s16 p = handled_cutoffs[i].p;
+ s16 height = handled_cutoffs[i].height;
+
+ if (p.Y + height > nmax.Y) {
+ //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
+ cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
+ }
+
+ generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
+ }
+
+ // Remove cutoffs that were handled from the cutoff list
+ {
+ JMutexAutoLock cutofflock(cutoff_mutex);
+ for (std::list<CutoffData>::iterator i = cutoffs.begin();
+ i != cutoffs.end(); ++i) {
+
+ for (size_t j = 0; j != handled_cutoffs.size(); j++) {
+ CutoffData coff = *i;
+ if (coff.p == handled_cutoffs[j].p)
+ i = cutoffs.erase(i);
+ }
+ }
+ }
+}
+#endif
+
+
+void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
+ Decoration::resolveNodeNames(ndef);
+
+ if (c_deco == CONTENT_IGNORE) {
+ c_deco = ndef->getId(deco_name);
+ if (c_deco == CONTENT_IGNORE) {
+ errorstream << "DecoSimple::resolveNodeNames: decoration node '"
+ << deco_name << "' not defined";
+ c_deco = CONTENT_AIR;
+ }
+ }
+ if (c_spawnby == CONTENT_IGNORE) {
+ c_spawnby = ndef->getId(spawnby_name);
+ if (c_spawnby == CONTENT_IGNORE) {
+ errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
+ << deco_name << "' not defined";
+ nspawnby = -1;
+ c_spawnby = CONTENT_AIR;
+ }
+ }
+
+ if (c_decolist.size())
+ return;
+
+ for (size_t i = 0; i != decolist_names.size(); i++) {
+ content_t c = ndef->getId(decolist_names[i]);
+ if (c == CONTENT_IGNORE) {
+ errorstream << "DecoSimple::resolveNodeNames: decolist node '"
+ << decolist_names[i] << "' not defined";
+ c = CONTENT_AIR;
+ }
+ c_decolist.push_back(c);
+ }
+}
+
+
+void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, s16 start_y, v3s16 p) {
+ ManualMapVoxelManipulator *vm = mg->vm;
+
+ u32 vi = vm->m_area.index(p);
+ if (vm->m_data[vi].getContent() != c_place_on &&
+ c_place_on != CONTENT_IGNORE)
+ return;
+
+ if (nspawnby != -1) {
+ int nneighs = 0;
+ v3s16 dirs[8] = { // a Moore neighborhood
+ v3s16( 0, 0, 1),
+ v3s16( 0, 0, -1),
+ v3s16( 1, 0, 0),
+ v3s16(-1, 0, 0),
+ v3s16( 1, 0, 1),
+ v3s16(-1, 0, 1),
+ v3s16(-1, 0, -1),
+ v3s16( 1, 0, -1)
+ };
+
+ for (int i = 0; i != 8; i++) {
+ u32 index = vm->m_area.index(p + dirs[i]);
+ if (vm->m_area.contains(index) &&
+ vm->m_data[index].getContent() == c_spawnby)
+ nneighs++;
+ }
+
+ if (nneighs < nspawnby)
+ return;
+ }
+
+ size_t ndecos = c_decolist.size();
+ content_t c = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
+
+ s16 height = (deco_height_max > 0) ?
+ pr->range(deco_height, deco_height_max) : deco_height;
+
+ height = MYMIN(height, max_y - p.Y);
+
+ v3s16 em = vm->m_area.getExtent();
+ for (int i = start_y; i < height; i++) {
+ vm->m_area.add_y(em, vi, 1);
+ vm->m_data[vi] = MapNode(c);
+ }
+}
+
+
+int DecoSimple::getHeight() {
+ return (deco_height_max > 0) ? deco_height_max : deco_height;
+}
+
+
+std::string DecoSimple::getName() {
+ return deco_name;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+Mapgen::Mapgen() {
+ seed = 0;
+ water_level = 0;
+ generating = false;
+ id = -1;
+ vm = NULL;
+ ndef = NULL;
+ heightmap = NULL;
+ biomemap = NULL;
+}
+
+
+// Returns Y one under area minimum if not found
+s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
+ v3s16 em = vm->m_area.getExtent();
+ s16 y_nodes_max = vm->m_area.MaxEdge.Y;
+ s16 y_nodes_min = vm->m_area.MinEdge.Y;
+ u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
+ s16 y;
+
+ for (y = y_nodes_max; y >= y_nodes_min; y--) {
+ MapNode &n = vm->m_data[i];
+ if (ndef->get(n).walkable)
+ break;
+
+ vm->m_area.add_y(em, i, -1);
+ }
+ return (y >= y_nodes_min) ? y : y_nodes_min - 1;
+}
+
+
+s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
+ v3s16 em = vm->m_area.getExtent();
+ u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
+ s16 y;
+
+ for (y = ymax; y >= ymin; y--) {
+ MapNode &n = vm->m_data[i];
+ if (ndef->get(n).walkable)
+ break;
+
+ vm->m_area.add_y(em, i, -1);
+ }
+ return y;
+}
+
+
+void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
+ if (!heightmap)
+ return;
+
+ //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++) {
+ s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
+ heightmap[index++] = y;
+ }
+ }
+ //printf("updateHeightmap: %dus\n", t.stop());
+}
+
+
void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
bool isliquid, wasliquid;
v3s16 em = vm->m_area.getExtent();
@@ -208,11 +517,11 @@ void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nm
for (s16 z = nmin.Z; z <= nmax.Z; z++) {
for (s16 x = nmin.X; x <= nmax.X; x++) {
wasliquid = true;
-
+
u32 i = vm->m_area.index(x, nmax.Y, z);
for (s16 y = nmax.Y; y >= nmin.Y; y--) {
isliquid = ndef->get(vm->m_data[i]).isLiquid();
-
+
// there was a change between liquid and nonliquid, add to queue
if (isliquid != wasliquid)
trans_liquid->push_back(v3s16(x, y, z));
@@ -242,7 +551,7 @@ void Mapgen::setLighting(v3s16 nmin, v3s16 nmax, u8 light) {
void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
if (light <= 1 || !a.contains(p))
return;
-
+
u32 vi = vm->m_area.index(p);
MapNode &nn = vm->m_data[vi];
@@ -250,9 +559,9 @@ void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
// should probably compare masked, but doesn't seem to make a difference
if (light <= nn.param1 || !ndef->get(nn).light_propagates)
return;
-
+
nn.param1 = light;
-
+
lightSpread(a, p + v3s16(0, 0, 1), light);
lightSpread(a, p + v3s16(0, 1, 0), light);
lightSpread(a, p + v3s16(1, 0, 0), light);
@@ -282,7 +591,7 @@ void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
continue;
}
vm->m_area.add_y(em, i, -1);
-
+
for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
MapNode &n = vm->m_data[i];
if (!ndef->get(n).sunlight_propagates)
@@ -292,7 +601,7 @@ void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
}
}
}
-
+
// now spread the sunlight and light up any sources
for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
@@ -302,11 +611,11 @@ void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
if (n.getContent() == CONTENT_IGNORE ||
!ndef->get(n).light_propagates)
continue;
-
+
u8 light_produced = ndef->get(n).light_source & 0x0F;
if (light_produced)
n.param1 = light_produced;
-
+
u8 light = n.param1 & 0x0F;
if (light) {
lightSpread(a, v3s16(x, y, z + 1), light);
@@ -319,7 +628,7 @@ void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
}
}
}
-
+
//printf("updateLighting: %dms\n", t.stop());
}
@@ -331,24 +640,24 @@ void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
bool sunlight = !block_is_underground;
ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
-
+
for (int i = 0; i < 2; i++) {
enum LightBank bank = banks[i];
std::set<v3s16> light_sources;
std::map<v3s16, u8> unlight_from;
voxalgo::clearLightAndCollectSources(*vm, a, bank, ndef,
- light_sources, unlight_from);
+ light_sources, unlight_from);
voxalgo::propagateSunlight(*vm, a, sunlight, light_sources, ndef);
vm->unspreadLight(bank, unlight_from, light_sources, ndef);
vm->spreadLight(bank, light_sources, ndef);
}
}
-
-
+
+
//////////////////////// Mapgen V6 parameter read/write
-
+
bool MapgenV6Params::readParams(Settings *settings) {
freq_desert = settings->getFloat("mgv6_freq_desert");
freq_beach = settings->getFloat("mgv6_freq_beach");
@@ -367,12 +676,12 @@ bool MapgenV6Params::readParams(Settings *settings) {
settings->getNoiseParams("mgv6_np_apple_trees", np_apple_trees);
return success;
}
-
-
+
+
void MapgenV6Params::writeParams(Settings *settings) {
settings->setFloat("mgv6_freq_desert", freq_desert);
settings->setFloat("mgv6_freq_beach", freq_beach);
-
+
settings->setNoiseParams("mgv6_np_terrain_base", np_terrain_base);
settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
settings->setNoiseParams("mgv6_np_steepness", np_steepness);
@@ -411,7 +720,6 @@ void MapgenV7Params::writeParams(Settings *settings) {
/////////////////////////////////// legacy static functions for farmesh
-
s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
//just need to return something
s16 level = 5;
@@ -421,9 +729,9 @@ s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
bool Mapgen::get_have_beach(u64 seed, v2s16 p2d) {
double sandnoise = noise2d_perlin(
- 0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
- seed+59420, 3, 0.50);
-
+ 0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
+ seed+59420, 3, 0.50);
+
return (sandnoise > 0.15);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 20:18:13 +0000