diff options
Diffstat (limited to 'src/mg_ore.cpp')
| -rw-r--r-- | src/mg_ore.cpp | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/src/mg_ore.cpp b/src/mg_ore.cpp index 2c5712da7..95bc02f4f 100644 --- a/src/mg_ore.cpp +++ b/src/mg_ore.cpp @@ -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; + } +} |