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author | kwolekr <kwolekr@minetest.net> | 2013-03-24 01:43:38 -0400 |
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committer | kwolekr <kwolekr@minetest.net> | 2013-03-24 13:23:33 -0400 |
commit | 57cbb8bfd8daaa1b8b1aa876723ff6355d21f7fc (patch) | |
tree | 99b6ce58417103e4271aae2db63cce9c3d85db1d /src/mapgen.cpp | |
parent | f70378f7f57f293a2a0afcf35aec8ee67180a6c0 (diff) | |
download | hax-minetest-server-57cbb8bfd8daaa1b8b1aa876723ff6355d21f7fc.tar.gz hax-minetest-server-57cbb8bfd8daaa1b8b1aa876723ff6355d21f7fc.zip |
Add Ore infrastructure and l_register_ore()
Diffstat (limited to 'src/mapgen.cpp')
-rw-r--r-- | src/mapgen.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/mapgen.cpp b/src/mapgen.cpp index dc6dab6bb..53b5d6867 100644 --- a/src/mapgen.cpp +++ b/src/mapgen.cpp @@ -49,6 +49,140 @@ FlagDesc flagdesc_mapgen[] = { /////////////////////////////////////////////////////////////////////////////// +Ore *createOre(OreType type) { + switch (type) { + case ORE_SCATTER: + return new OreScatter; + case ORE_SHEET: + return new OreSheet; + //case ORE_CLAYLIKE: //TODO: implement this! + // return new OreClaylike; + default: + return NULL; + } +} + + +void Ore::resolveNodeNames(INodeDefManager *ndef) { + if (ore == CONTENT_IGNORE) { + ore = ndef->getId(ore_name); + if (ore == CONTENT_IGNORE) { + errorstream << "Ore::resolveNodeNames: ore node '" + << ore_name << "' not defined"; + ore = CONTENT_AIR; + wherein = CONTENT_AIR; + } + } + + if (wherein == CONTENT_IGNORE) { + wherein = ndef->getId(wherein_name); + if (wherein == CONTENT_IGNORE) { + errorstream << "Ore::resolveNodeNames: wherein node '" + << wherein_name << "' not defined"; + ore = CONTENT_AIR; + wherein = CONTENT_AIR; + } + } +} + + +void OreScatter::generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) { + if (nmin.Y > height_max || nmax.Y < height_min) + return; + + resolveNodeNames(mg->ndef); + + MapNode n_ore(ore); + ManualMapVoxelManipulator *vm = mg->vm; + PseudoRandom pr(blockseed); + + int ymin = MYMAX(nmin.Y, height_min); + int ymax = MYMIN(nmax.Y, height_max); + if (clust_size >= ymax - ymin + 1) + return; + + 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(ymin, ymax - csize + 1); + int z0 = pr.range(nmin.Z, nmax.Z - csize + 1); + + if (np && (NoisePerlin3D(np, x0, y0, z0, mg->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; + } + } +} + + +void OreSheet::generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) { + if (nmin.Y > height_max || nmax.Y < height_min) + return; + + resolveNodeNames(mg->ndef); + + MapNode n_ore(ore); + ManualMapVoxelManipulator *vm = mg->vm; + PseudoRandom pr(blockseed + 4234); + + int ymin = MYMAX(nmin.Y, height_min); + int ymax = MYMIN(nmax.Y, height_max); + + int x0 = nmin.X; + int z0 = nmin.Z; + + int x1 = nmax.X; + int z1 = nmax.Z; + + int max_height = clust_size; + + int y_start = pr.range(ymin, ymax - 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 = mg->seed + y_start; + noise->perlinMap2D(x0, z0); + + int index = 0; + for (int z = z0; z != z1; z++) + for (int x = x0; x != x1; x++) { + + if (noise->result[index++] < nthresh) + continue; + + int height = max_height * (1. / pr.range(1, 3)); + int y0 = y_start + 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 (vm->m_data[i].getContent() == wherein) + vm->m_data[i] = n_ore; + } + } +} + + void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) { bool isliquid, wasliquid; v3s16 em = vm->m_area.getExtent(); |