forked from Mirrorlandia_minetest/minetest
Ore: Add Vein ore type
This commit is contained in:
parent
900fa26965
commit
61dfa912f5
@ -563,9 +563,27 @@ All default ores are of the uniformly-distributed scatter type.
|
||||
clust_scarcity and clust_num_ores are ignored.
|
||||
This is essentially an improved version of the so-called "stratus" ore seen in some unofficial mods.
|
||||
- blob
|
||||
Creates a roundish blob of ore according to 3d perlin noise described by noise_params. The maximum
|
||||
size of the blob is clust_size, and clust_scarcity has the same meaning as with scatter type.
|
||||
|
||||
Creates a deformed sphere blobs of ore according to 3d perlin noise described by noise_params. The
|
||||
maximum size of the blob is clust_size, and clust_scarcity has the same meaning as with scatter type.
|
||||
- vein
|
||||
Creates veins of ore varying in density by according to the intersection of two instances 3d perlin
|
||||
noise with diffferent seeds both described by noise_params. random_factor varies the influence random
|
||||
chance has on placement of an ore inside the vein, which is 1 by default. Note that modifying this
|
||||
parameter may require adjusting noise_threshhold. The parameters clust_scarcity, clust_num_ores, and
|
||||
clust_size are ignored by this ore type. This ore type is difficult to control since it is sensitive
|
||||
to small changes. The following is a decent set of parameters to work from:
|
||||
noise_params = {
|
||||
offset = 0,
|
||||
scale = 3,
|
||||
spread = {x=200, y=200, z=200},
|
||||
seed = 5390,
|
||||
octaves = 4,
|
||||
persist = 0.5,
|
||||
flags = "eased",
|
||||
},
|
||||
noise_threshhold = 1.6
|
||||
WARNING: Use this ore type *very* sparingly since it is ~200x more computationally expensive than
|
||||
any other ore.
|
||||
|
||||
Ore attributes
|
||||
-------------------
|
||||
@ -2717,6 +2735,10 @@ Ore definition (register_ore)
|
||||
noise_params = {offset=0, scale=1, spread={x=100, y=100, z=100}, seed=23, octaves=3, persist=0.70}
|
||||
^ NoiseParams structure describing the perlin noise used for ore distribution.
|
||||
^ Needed for sheet ore_type. Omit from scatter ore_type for a uniform ore distribution
|
||||
random_factor = 1.0,
|
||||
^ Multiplier of the randomness contribution to the noise value at any given point to
|
||||
^ decide if ore should be placed. Set to 0 for solid veins. This parameter is only valid
|
||||
^ for ore_type == "vein".
|
||||
}
|
||||
|
||||
Decoration definition (register_decoration)
|
||||
|
@ -27,10 +27,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
const char *OreManager::ELEMENT_TITLE = "ore";
|
||||
|
||||
FlagDesc flagdesc_ore[] = {
|
||||
{"absheight", OREFLAG_ABSHEIGHT},
|
||||
{"scatter_noisedensity", OREFLAG_DENSITY},
|
||||
{"claylike_nodeisnt", OREFLAG_NODEISNT},
|
||||
{NULL, 0}
|
||||
{"absheight", OREFLAG_ABSHEIGHT},
|
||||
{NULL, 0}
|
||||
};
|
||||
|
||||
|
||||
@ -217,7 +215,7 @@ void OreBlob::generate(ManualMapVoxelManipulator *vm, int seed, u32 blockseed,
|
||||
int volume = (nmax.X - nmin.X + 1) *
|
||||
(nmax.Y - nmin.Y + 1) *
|
||||
(nmax.Z - nmin.Z + 1);
|
||||
int csize = clust_size;
|
||||
int csize = clust_size;
|
||||
int nblobs = volume / clust_scarcity;
|
||||
|
||||
if (!noise)
|
||||
@ -261,3 +259,55 @@ void OreBlob::generate(ManualMapVoxelManipulator *vm, int seed, u32 blockseed,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
OreVein::~OreVein()
|
||||
{
|
||||
delete noise2;
|
||||
}
|
||||
|
||||
|
||||
void OreVein::generate(ManualMapVoxelManipulator *vm, int seed, 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, seed, sx, sy, sz);
|
||||
noise2 = new Noise(&np, seed + 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;
|
||||
}
|
||||
}
|
||||
|
24
src/mg_ore.h
24
src/mg_ore.h
@ -32,14 +32,6 @@ class ManualMapVoxelManipulator;
|
||||
|
||||
// Use absolute value of height to determine ore placement
|
||||
#define OREFLAG_ABSHEIGHT 0x01
|
||||
|
||||
// Use 3d noise to get density of ore placement, instead of just the position
|
||||
#define OREFLAG_DENSITY 0x02 // not yet implemented
|
||||
|
||||
// For claylike ore types, place ore if the number of surrounding
|
||||
// nodes isn't the specified node
|
||||
#define OREFLAG_NODEISNT 0x04 // not yet implemented
|
||||
|
||||
#define OREFLAG_USE_NOISE 0x08
|
||||
|
||||
#define ORE_RANGE_ACTUAL 1
|
||||
@ -50,6 +42,7 @@ enum OreType {
|
||||
ORE_TYPE_SCATTER,
|
||||
ORE_TYPE_SHEET,
|
||||
ORE_TYPE_BLOB,
|
||||
ORE_TYPE_VEIN,
|
||||
};
|
||||
|
||||
extern FlagDesc flagdesc_ore[];
|
||||
@ -105,6 +98,19 @@ public:
|
||||
u32 blockseed, v3s16 nmin, v3s16 nmax);
|
||||
};
|
||||
|
||||
class OreVein : public Ore {
|
||||
public:
|
||||
static const bool NEEDS_NOISE = true;
|
||||
|
||||
float random_factor;
|
||||
Noise *noise2;
|
||||
|
||||
virtual ~OreVein();
|
||||
|
||||
virtual void generate(ManualMapVoxelManipulator *vm, int seed,
|
||||
u32 blockseed, v3s16 nmin, v3s16 nmax);
|
||||
};
|
||||
|
||||
class OreManager : public GenElementManager {
|
||||
public:
|
||||
static const char *ELEMENT_TITLE;
|
||||
@ -122,6 +128,8 @@ public:
|
||||
return new OreSheet;
|
||||
case ORE_TYPE_BLOB:
|
||||
return new OreBlob;
|
||||
case ORE_TYPE_VEIN:
|
||||
return new OreVein;
|
||||
default:
|
||||
return NULL;
|
||||
}
|
||||
|
@ -68,9 +68,10 @@ struct EnumString ModApiMapgen::es_MapgenObject[] =
|
||||
|
||||
struct EnumString ModApiMapgen::es_OreType[] =
|
||||
{
|
||||
{ORE_TYPE_SCATTER, "scatter"},
|
||||
{ORE_TYPE_SHEET, "sheet"},
|
||||
{ORE_TYPE_BLOB, "blob"},
|
||||
{ORE_TYPE_SCATTER, "scatter"},
|
||||
{ORE_TYPE_SHEET, "sheet"},
|
||||
{ORE_TYPE_BLOB, "blob"},
|
||||
{ORE_TYPE_VEIN, "vein"},
|
||||
{0, NULL},
|
||||
};
|
||||
|
||||
@ -680,6 +681,12 @@ int ModApiMapgen::l_register_ore(lua_State *L)
|
||||
}
|
||||
lua_pop(L, 1);
|
||||
|
||||
if (oretype == ORE_TYPE_VEIN) {
|
||||
OreVein *orevein = (OreVein *)ore;
|
||||
orevein->random_factor = getfloatfield_default(L, index,
|
||||
"random_factor", 1.f);
|
||||
}
|
||||
|
||||
u32 id = oremgr->add(ore);
|
||||
if (id == (u32)-1) {
|
||||
delete ore;
|
||||
|
Loading…
Reference in New Issue
Block a user