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author | kwolekr <kwolekr@minetest.net> | 2014-12-28 03:11:00 -0500 |
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committer | kwolekr <kwolekr@minetest.net> | 2014-12-28 03:11:00 -0500 |
commit | 900fa26965a2fbdf2b9de74e2d680c083de91482 (patch) | |
tree | 01bce4aa413ddde84ee0387a5a69875a437887d1 | |
parent | 8c98f497d957835803dd43a98a23a5d0eb98124c (diff) | |
download | minetest-900fa26965a2fbdf2b9de74e2d680c083de91482.tar.gz minetest-900fa26965a2fbdf2b9de74e2d680c083de91482.tar.bz2 minetest-900fa26965a2fbdf2b9de74e2d680c083de91482.zip |
Ore: Add Blob ore type
-rw-r--r-- | doc/lua_api.txt | 6 | ||||
-rw-r--r-- | src/mg_ore.cpp | 61 | ||||
-rw-r--r-- | src/mg_ore.h | 28 | ||||
-rw-r--r-- | src/script/lua_api/l_mapgen.cpp | 8 |
4 files changed, 84 insertions, 19 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt index 0ceac1fca..8f491f5a8 100644 --- a/doc/lua_api.txt +++ b/doc/lua_api.txt @@ -562,9 +562,9 @@ All default ores are of the uniformly-distributed scatter type. The height of the blob is randomly scattered, with a maximum height of clust_size. 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. - - claylike - NOT YET IMPLEMENTED - Places ore if there are no more than clust_scarcity number of specified nodes within a Von Neumann - neighborhood of clust_size radius. + - 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. Ore attributes diff --git a/src/mg_ore.cpp b/src/mg_ore.cpp index 8681b5782..2c5712da7 100644 --- a/src/mg_ore.cpp +++ b/src/mg_ore.cpp @@ -178,12 +178,12 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed, if (!noise) { int sx = nmax.X - nmin.X + 1; int sz = nmax.Z - nmin.Z + 1; - noise = new Noise(&np, seed, sx, sz); + noise = new Noise(&np, 0, sx, sz); } noise->seed = seed + y_start; noise->perlinMap2D(nmin.X, nmin.Z); - int index = 0; + 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++]; @@ -204,3 +204,60 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed, } } } + + +/////////////////////////////////////////////////////////////////////////////// + +void OreBlob::generate(ManualMapVoxelManipulator *vm, int seed, 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, seed, 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; + } + } +} diff --git a/src/mg_ore.h b/src/mg_ore.h index 3b413674e..a20aeefe0 100644 --- a/src/mg_ore.h +++ b/src/mg_ore.h @@ -47,9 +47,9 @@ class ManualMapVoxelManipulator; enum OreType { - ORE_SCATTER, - ORE_SHEET, - ORE_CLAYLIKE + ORE_TYPE_SCATTER, + ORE_TYPE_SHEET, + ORE_TYPE_BLOB, }; extern FlagDesc flagdesc_ore[]; @@ -78,7 +78,7 @@ public: size_t placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax); virtual void generate(ManualMapVoxelManipulator *vm, int seed, - u32 blockseed, v3s16 nmin, v3s16 nmax) = 0; + u32 blockseed, v3s16 nmin, v3s16 nmax) = 0; }; class OreScatter : public Ore { @@ -86,7 +86,7 @@ public: static const bool NEEDS_NOISE = false; virtual void generate(ManualMapVoxelManipulator *vm, int seed, - u32 blockseed, v3s16 nmin, v3s16 nmax); + u32 blockseed, v3s16 nmin, v3s16 nmax); }; class OreSheet : public Ore { @@ -94,7 +94,15 @@ public: static const bool NEEDS_NOISE = true; virtual void generate(ManualMapVoxelManipulator *vm, int seed, - u32 blockseed, v3s16 nmin, v3s16 nmax); + u32 blockseed, v3s16 nmin, v3s16 nmax); +}; + +class OreBlob : public Ore { +public: + static const bool NEEDS_NOISE = true; + + virtual void generate(ManualMapVoxelManipulator *vm, int seed, + u32 blockseed, v3s16 nmin, v3s16 nmax); }; class OreManager : public GenElementManager { @@ -108,12 +116,12 @@ public: Ore *create(int type) { switch (type) { - case ORE_SCATTER: + case ORE_TYPE_SCATTER: return new OreScatter; - case ORE_SHEET: + case ORE_TYPE_SHEET: return new OreSheet; - //case ORE_CLAYLIKE: //TODO: implement this! - // return new OreClaylike; + case ORE_TYPE_BLOB: + return new OreBlob; default: return NULL; } diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp index 383fbeaef..8c81412b1 100644 --- a/src/script/lua_api/l_mapgen.cpp +++ b/src/script/lua_api/l_mapgen.cpp @@ -68,9 +68,9 @@ struct EnumString ModApiMapgen::es_MapgenObject[] = struct EnumString ModApiMapgen::es_OreType[] = { - {ORE_SCATTER, "scatter"}, - {ORE_SHEET, "sheet"}, - {ORE_CLAYLIKE, "claylike"}, + {ORE_TYPE_SCATTER, "scatter"}, + {ORE_TYPE_SHEET, "sheet"}, + {ORE_TYPE_BLOB, "blob"}, {0, NULL}, }; @@ -642,7 +642,7 @@ int ModApiMapgen::l_register_ore(lua_State *L) OreManager *oremgr = getServer(L)->getEmergeManager()->oremgr; enum OreType oretype = (OreType)getenumfield(L, index, - "ore_type", es_OreType, ORE_SCATTER); + "ore_type", es_OreType, ORE_TYPE_SCATTER); Ore *ore = oremgr->create(oretype); if (!ore) { errorstream << "register_ore: ore_type " << oretype << " not implemented"; |