Biome TileRenderer::getBiomeOfBlock(const mc::BlockPos& pos, const mc::Chunk* chunk) { // return default biome if we don't want to render different biomes if (!render_biomes) return getBiome(DEFAULT_BIOME); uint8_t biome_id = chunk->getBiomeAt(mc::LocalBlockPos(pos)); Biome biome = getBiome(biome_id); int count = 1; // get average biome data to make smooth edges between // different biomes for (int dx = -1; dx <= 1; dx++) for (int dz = -1; dz <= 1; dz++) { if (dx == 0 && dz == 0) continue; mc::BlockPos other = pos + mc::BlockPos(dx, dz, 0); mc::ChunkPos chunk_pos(other); uint8_t other_id = chunk->getBiomeAt(mc::LocalBlockPos(other)); if (chunk_pos != chunk->getPos()) { mc::Chunk* other_chunk = state.world->getChunk(chunk_pos); if (other_chunk == nullptr) continue; other_id = other_chunk->getBiomeAt(mc::LocalBlockPos(other)); } biome += getBiome(other_id); count++; } biome /= count; return biome; }
void MapgenV6::generateCaves(int max_stone_y) { float cave_amount = NoisePerlin2D(np_cave, node_min.X, node_min.Y, seed); int volume_nodes = (node_max.X - node_min.X + 1) * (node_max.Y - node_min.Y + 1) * MAP_BLOCKSIZE; cave_amount = MYMAX(0.0, cave_amount); u32 caves_count = cave_amount * volume_nodes / 50000; u32 bruises_count = 1; PseudoRandom ps(blockseed + 21343); PseudoRandom ps2(blockseed + 1032); if (ps.range(1, 6) == 1) bruises_count = ps.range(0, ps.range(0, 2)); if (getBiome(node_min) == BT_DESERT) { caves_count /= 3; bruises_count /= 3; } for (u32 i = 0; i < caves_count + bruises_count; i++) { bool large_cave = (i >= caves_count); CaveV6 cave(this, &ps, &ps2, large_cave); cave.makeCave(node_min, node_max, max_stone_y); } }
void MapgenV6::generateCaves(int max_stone_y) { float cave_amount = NoisePerlin2D(np_cave, node_min.X, node_min.Y, seed); int volume_nodes = (node_max.X - node_min.X + 1) * (node_max.Y - node_min.Y + 1) * MAP_BLOCKSIZE; cave_amount = MYMAX(0.0, cave_amount); u32 caves_count = cave_amount * volume_nodes / 50000; u32 bruises_count = 1; PseudoRandom ps(blockseed + 21343); PseudoRandom ps2(blockseed + 1032); if (ps.range(1, 6) == 1) bruises_count = ps.range(0, ps.range(0, 2)); if (getBiome(v2s16(node_min.X, node_min.Z)) == BT_DESERT) { caves_count /= 3; bruises_count /= 3; } for (u32 i = 0; i < caves_count + bruises_count; i++) { CavesV6 cave(ndef, &gennotify, water_level, c_water_source, c_lava_source); bool large_cave = (i >= caves_count); cave.makeCave(vm, node_min, node_max, &ps, &ps2, large_cave, max_stone_y, heightmap); } }
void MapgenV6::addMud() { // 15ms @cs=8 //TimeTaker timer1("add mud"); MapNode n_dirt(c_dirt), n_gravel(c_gravel); MapNode n_sand(c_sand), n_desert_sand(c_desert_sand); MapNode addnode; u32 index = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index++) { // Randomize mud amount s16 mud_add_amount = getMudAmount(index) / 2.0 + 0.5; // Find ground level s16 surface_y = find_stone_level(v2s16(x, z)); /////////////////optimize this! // Handle area not found if (surface_y == vm->m_area.MinEdge.Y - 1) continue; BiomeV6Type bt = getBiome(v3POS(x, surface_y, z)); addnode = (bt == BT_DESERT) ? n_desert_sand : n_dirt; if (bt == BT_DESERT && surface_y + mud_add_amount <= water_level + 1) { addnode = n_sand; } else if (mud_add_amount <= 0) { mud_add_amount = 1 - mud_add_amount; addnode = n_gravel; } else if (bt != BT_DESERT && getHaveBeach(index) && surface_y + mud_add_amount <= water_level + 2) { addnode = n_sand; } if ((bt == BT_DESERT || bt == BT_TUNDRA) && surface_y > 20) mud_add_amount = MYMAX(0, mud_add_amount - (surface_y - 20) / 5); /* If topmost node is grass, change it to mud. It might be if it was // flown to there from a neighboring chunk and then converted. u32 i = vm->m_area.index(x, surface_y, z); if (vm->m_data[i].getContent() == c_dirt_with_grass) vm->m_data[i] = n_dirt;*/ // Add mud on ground s16 mudcount = 0; v3s16 em = vm->m_area.getExtent(); s16 y_start = surface_y + 1; u32 i = vm->m_area.index(x, y_start, z); for (s16 y = y_start; y <= node_max.Y; y++) { if (mudcount >= mud_add_amount) break; vm->m_data[i] = addnode; mudcount++; vm->m_area.add_y(em, i, 1); } } }
// just a PoC, obviously needs optimization later on (precalculate this) void BiomeManager::calcBiomes(s16 sx, s16 sy, float *heat_map, float *humidity_map, s16 *height_map, u8 *biomeid_map) { for (s32 i = 0; i != sx * sy; i++) { Biome *biome = getBiome(heat_map[i], humidity_map[i], height_map[i]); biomeid_map[i] = biome->index; } }
int MapgenIndev::generateGround() { //TimeTaker timer1("Generating ground level"); MapNode n_air(CONTENT_AIR), n_water_source(c_water_source); MapNode n_stone(c_stone), n_desert_stone(c_desert_stone); MapNode n_ice(c_ice), n_dirt(c_dirt),n_sand(c_sand), n_gravel(c_gravel), n_lava_source(c_lava_source); int stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT; u32 index = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index++) { // Surface height s16 surface_y = (s16)baseTerrainLevelFromMap(index); // Log it if (surface_y > stone_surface_max_y) stone_surface_max_y = surface_y; auto bt = getBiome(index, v3POS(x, surface_y, z)); s16 heat = m_emerge->env->m_use_weather ? m_emerge->env->getServerMap().updateBlockHeat(m_emerge->env, v3POS(x,node_max.Y,z), nullptr, &heat_cache) : 0; // Fill ground with stone v3POS em = vm->m_area.getExtent(); u32 i = vm->m_area.index(x, node_min.Y, z); for (s16 y = node_min.Y; y <= node_max.Y; y++) { if (!vm->m_data[i]) { if (y <= surface_y) { int index3 = (z - node_min.Z) * zstride + (y - node_min.Y) * ystride + (x - node_min.X) * xstride; if (cave_noise_threshold && noise_cave_indev->result[index3] > cave_noise_threshold) { vm->m_data[i] = n_air; } else { auto n = (y > water_level - surface_y && bt == BT_DESERT) ? n_desert_stone : layers_get(index3); bool protect = n.getContent() != CONTENT_AIR; if (cave_noise_threshold && noise_cave_indev->result[index3] > cave_noise_threshold - 50) { vm->m_data[i] = protect ? n_stone : n; //cave shell without layers protect = true; } else { vm->m_data[i] = n; } if (protect) vm->m_flags[i] |= VOXELFLAG_CHECKED2; // no cave liquid } } else if (y <= water_level) { vm->m_data[i] = (heat < 0 && y > heat/3) ? n_ice : n_water_source; if (liquid_pressure && y <= 0) vm->m_data[i].addLevel(m_emerge->ndef, water_level - y, 1); } else { vm->m_data[i] = n_air; } } vm->m_area.add_y(em, i, 1); } } return stone_surface_max_y; }
// just a PoC, obviously needs optimization later on (precalculate this) void BiomeDefManager::calcBiomes(BiomeNoiseInput *input, u8 *biomeid_map) { int i = 0; for (int y = 0; y != input->mapsize.Y; y++) { for (int x = 0; x != input->mapsize.X; x++, i++) { float heat = (input->heat_map[i] + 1) * 50; float humidity = (input->humidity_map[i] + 1) * 50; biomeid_map[i] = getBiome(heat, humidity, input->height_map[i])->id; } } }
void MapgenV6::growGrass() // Add surface nodes { MapNode n_dirt_with_grass(c_dirt_with_grass); MapNode n_dirt_with_snow(c_dirt_with_snow); MapNode n_snowblock(c_snowblock); MapNode n_snow(c_snow); MapNode n_dirt(c_dirt); v3s16 em = vm->m_area.getExtent(); u32 index = 0; for (s16 z = full_node_min.Z; z <= full_node_max.Z; z++) for (s16 x = full_node_min.X; x <= full_node_max.X; x++, index++) { // Find the lowest surface to which enough light ends up to make // grass grow. Basically just wait until not air and not leaves. s16 surface_y = 0; { u32 i = vm->m_area.index(x, node_max.Y, z); s16 y; // Go to ground level for (y = node_max.Y; y >= full_node_min.Y; y--) { MapNode &n = vm->m_data[i]; if (ndef->get(n).param_type != CPT_LIGHT || ndef->get(n).liquid_type != LIQUID_NONE || n.getContent() == c_ice) break; vm->m_area.add_y(em, i, -1); } surface_y = (y >= full_node_min.Y) ? y : full_node_min.Y; } BiomeV6Type bt = getBiome(index, v3POS(x, surface_y, z)); u32 i = vm->m_area.index(x, surface_y, z); content_t c = vm->m_data[i].getContent(); if (m_emerge->env->m_use_weather && c == c_dirt) { int heat = m_emerge->env->getServerMap().updateBlockHeat(m_emerge->env, v3POS(x, surface_y, z), nullptr, &heat_cache); vm->m_data[i] = (heat < -10 ? n_dirt_with_snow : (heat < -5 || heat > 50) ? n_dirt : n_dirt_with_grass); } else if (surface_y >= water_level - 20) { if (bt == BT_TAIGA && c == c_dirt) { vm->m_data[i] = n_snowblock; vm->m_area.add_y(em, i, -1); vm->m_data[i] = n_dirt_with_snow; } else if (bt == BT_TUNDRA) { if (c == c_dirt) { vm->m_data[i] = n_dirt_with_snow; } else if (c == c_stone && surface_y < node_max.Y) { vm->m_area.add_y(em, i, 1); vm->m_data[i] = n_snow; } } else if (c == c_dirt) { vm->m_data[i] = n_dirt_with_grass; } } } }
// just a PoC, obviously needs optimization later on (precalculate this) void BiomeManager::calcBiomes(s16 sx, s16 sy, float *heat_map, float *humidity_map, s16 *height_map, u8 *biomeid_map) { int i = 0; for (int y = 0; y != sy; y++) { for (int x = 0; x != sx; x++, i++) { float heat = (heat_map[i] + 1) * 50; float humidity = (humidity_map[i] + 1) * 50; biomeid_map[i] = getBiome(heat, humidity, height_map[i])->id; } } }
int MapgenV6::generateGround() { //TimeTaker timer1("Generating ground level"); MapNode n_air(CONTENT_AIR), n_water_source(c_water_source); MapNode n_stone(c_stone), n_desert_stone(c_desert_stone); MapNode n_ice(c_ice); int stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT; u32 index = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index++) { // Surface height s16 surface_y = (s16)baseTerrainLevelFromMap(index); // Log it if (surface_y > stone_surface_max_y) stone_surface_max_y = surface_y; BiomeV6Type bt = getBiome(v3POS(x, node_min.Y, z)); s16 heat = m_emerge->env->m_use_weather ? m_emerge->env->getServerMap().updateBlockHeat(m_emerge->env, v3POS(x,node_max.Y,z), nullptr, &heat_cache) : 0; // Fill ground with stone v3s16 em = vm->m_area.getExtent(); u32 i = vm->m_area.index(x, node_min.Y, z); for (s16 y = node_min.Y; y <= node_max.Y; y++) { if (vm->m_data[i].getContent() == CONTENT_IGNORE) { if (y <= surface_y) { vm->m_data[i] = (y >= MGV6_DESERT_STONE_BASE - surface_y && bt == BT_DESERT) ? n_desert_stone : n_stone; } else if (y <= water_level) { vm->m_data[i] = ((heat < 0 && y > heat/3) || (y >= MGV6_ICE_BASE && bt == BT_TUNDRA)) ? n_ice : n_water_source; if (liquid_pressure && y <= 0) vm->m_data[i].addLevel(m_emerge->ndef, water_level - y, 1); } else { vm->m_data[i] = n_air; } } vm->m_area.add_y(em, i, 1); } } return stone_surface_max_y; }
int MapgenV6::generateGround() { //TimeTaker timer1("Generating ground level"); MapNode n_air(CONTENT_AIR), n_water_source(c_water_source); MapNode n_stone(c_stone), n_desert_stone(c_desert_stone); MapNode n_ice(c_ice); int stone_surface_max_y = -MAP_GENERATION_LIMIT; u32 index = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index++) { // Surface height s16 surface_y = (s16)baseTerrainLevelFromMap(index); // Log it if (surface_y > stone_surface_max_y) stone_surface_max_y = surface_y; BiomeV6Type bt = getBiome(v2s16(x, z)); // Fill ground with stone v3s16 em = vm->m_area.getExtent(); u32 i = vm->m_area.index(x, node_min.Y, z); for (s16 y = node_min.Y; y <= node_max.Y; y++) { if (vm->m_data[i].getContent() == CONTENT_IGNORE) { if (y <= surface_y) { vm->m_data[i] = (y >= DESERT_STONE_BASE && bt == BT_DESERT) ? n_desert_stone : n_stone; } else if (y <= water_level) { vm->m_data[i] = (y >= ICE_BASE && bt == BT_TUNDRA) ? n_ice : n_water_source; } else { vm->m_data[i] = n_air; } } vm->m_area.add_y(em, i, 1); } } return stone_surface_max_y; }
int MapgenV6::generateGround() { //TimeTaker timer1("Generating ground level"); MapNode n_air(CONTENT_AIR), n_water_source(c_water_source); MapNode n_stone(c_stone), n_desert_stone(c_desert_stone); MapNode n_ice(c_ice); int stone_surface_max_y = -MAP_GENERATION_LIMIT; u32 index = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index++) { // Surface height s16 surface_y = (s16)baseTerrainLevelFromMap(index); // Log it if (surface_y > stone_surface_max_y) stone_surface_max_y = surface_y; BiomeType bt = getBiome(index, v2s16(x, z)); // Fill ground with stone v3s16 em = vm->m_area.getExtent(); u32 i = vm->m_area.index(x, node_min.Y, z); for (s16 y = node_min.Y; y <= node_max.Y; y++) { if (vm->m_data[i].getContent() == CONTENT_IGNORE) { if (y <= surface_y) { vm->m_data[i] = (y > water_level - surface_y && bt == BT_DESERT) ? n_desert_stone : n_stone; } else if (y <= water_level) { s16 heat = emerge->env->m_use_weather ? emerge->env->getServerMap().updateBlockHeat(emerge->env, v3s16(x,y,z)) : 0; vm->m_data[i] = (heat < 0 && y > heat/3) ? n_ice : n_water_source; } else { vm->m_data[i] = n_air; } } vm->m_area.add_y(em, i, 1); } } return stone_surface_max_y; }
void MapgenV6::addDirtGravelBlobs() { if (getBiome(v2s16(node_min.X, node_min.Z)) != BT_NORMAL) return; PseudoRandom pr(blockseed + 983); for (int i = 0; i < volume_nodes/10/10/10; i++) { bool only_fill_cave = (myrand_range(0,1) != 0); v3s16 size( pr.range(1, 8), pr.range(1, 8), pr.range(1, 8) ); v3s16 p0( pr.range(node_min.X, node_max.X) - size.X / 2, pr.range(node_min.Y, node_max.Y) - size.Y / 2, pr.range(node_min.Z, node_max.Z) - size.Z / 2 ); MapNode n1((p0.Y > -32 && !pr.range(0, 1)) ? c_dirt : c_gravel); for (int z1 = 0; z1 < size.Z; z1++) for (int y1 = 0; y1 < size.Y; y1++) for (int x1 = 0; x1 < size.X; x1++) { v3s16 p = p0 + v3s16(x1, y1, z1); u32 i = vm->m_area.index(p); if (!vm->m_area.contains(i)) continue; // Cancel if not stone and not cave air if (vm->m_data[i].getContent() != c_stone && !(vm->m_flags[i] & VMANIP_FLAG_CAVE)) continue; if (only_fill_cave && !(vm->m_flags[i] & VMANIP_FLAG_CAVE)) continue; vm->m_data[i] = n1; } } }
void MapgenV6::placeTreesAndJungleGrass() { //TimeTaker t("placeTrees"); PseudoRandom grassrandom(blockseed + 53); content_t c_sand = ndef->getId("mapgen_sand"); content_t c_junglegrass = ndef->getId("mapgen_junglegrass"); // if we don't have junglegrass, don't place cignore... that's bad if (c_junglegrass == CONTENT_IGNORE) c_junglegrass = CONTENT_AIR; MapNode n_junglegrass(c_junglegrass); v3s16 em = vm->m_area.getExtent(); // Divide area into parts s16 div = 8; s16 sidelen = central_area_size.X / div; double area = sidelen * sidelen; // N.B. We must add jungle grass first, since tree leaves will // obstruct the ground, giving us a false ground level for (s16 z0 = 0; z0 < div; z0++) for (s16 x0 = 0; x0 < div; x0++) { // Center position of part of division v2s16 p2d_center( node_min.X + sidelen / 2 + sidelen * x0, node_min.Z + sidelen / 2 + sidelen * z0 ); // Minimum edge of part of division v2s16 p2d_min( node_min.X + sidelen * x0, node_min.Z + sidelen * z0 ); // Maximum edge of part of division v2s16 p2d_max( node_min.X + sidelen + sidelen * x0 - 1, node_min.Z + sidelen + sidelen * z0 - 1 ); // Get biome at center position of part of division BiomeV6Type bt = getBiome(v3POS(p2d_center.X, node_min.Y, p2d_center.Y)); // Amount of trees float humidity = getHumidity(v3POS(p2d_center.X, node_max.Y, p2d_center.Y)); s32 tree_count; if (bt == BT_JUNGLE || bt == BT_TAIGA || bt == BT_NORMAL) { tree_count = area * getTreeAmount(p2d_center) * ((humidity + 1)/2.0); if (bt == BT_JUNGLE) tree_count *= 4; } else { tree_count = 0; } if (node_max.Y < water_level) tree_count /= 2; // Add jungle grass if (bt == BT_JUNGLE) { u32 grass_count = 5 * humidity * tree_count; for (u32 i = 0; i < grass_count; i++) { s16 x = grassrandom.range(p2d_min.X, p2d_max.X); s16 z = grassrandom.range(p2d_min.Y, p2d_max.Y); /* wtf int mapindex = central_area_size.X * (z - node_min.Z) + (x - node_min.X); s16 y = heightmap[mapindex]; */ s16 y = findGroundLevelFull(v2s16(x, z)); if (y < water_level) continue; u32 vi = vm->m_area.index(x, y, z); // place on dirt_with_grass, since we know it is exposed to sunlight if (vm->m_data[vi].getContent() == c_dirt_with_grass) { vm->m_area.add_y(em, vi, 1); vm->m_data[vi] = n_junglegrass; } } } // Put trees in random places on part of division for (s32 i = 0; i < tree_count; i++) { s16 x = myrand_range(p2d_min.X, p2d_max.X); s16 z = myrand_range(p2d_min.Y, p2d_max.Y); /* wtf int mapindex = central_area_size.X * (z - node_min.Z) + (x - node_min.X); s16 y = heightmap[mapindex]; */ s16 y = findGroundLevelFull(v2s16(x, z)); // Don't make a tree under water level // Don't make a tree so high that it doesn't fit if (y > node_max.Y - 6) continue; v3s16 p(x, y, z); // Trees grow only on mud and grass and snowblock { u32 i = vm->m_area.index(p); content_t c = vm->m_data[i].getContent(); if (c != c_dirt && c != c_dirt_with_grass && c != c_dirt_with_snow && c != c_snowblock && (y >= water_level || c != c_sand)) continue; } p.Y++; // Make a tree if (y < water_level) { if (y < water_level - 20) // do not spawn trees in lakes treegen::make_cavetree(*vm, p, bt == BT_JUNGLE, ndef, myrand()); } else if (bt == BT_JUNGLE) { treegen::make_jungletree(*vm, p, ndef, myrand()); } else if (bt == BT_TAIGA) { treegen::make_pine_tree(*vm, p - v3s16(0, 1, 0), ndef, myrand()); } else if (bt == BT_NORMAL) { bool is_apple_tree = (myrand_range(0, 3) == 0) && getHaveAppleTree(v2s16(x, z)); treegen::make_tree(*vm, p, is_apple_tree, ndef, myrand()); } } } //printf("placeTreesAndJungleGrass: %dms\n", t.stop()); }
void MapgenV6::makeChunk(BlockMakeData *data) { assert(data->vmanip); assert(data->nodedef); assert(data->blockpos_requested.X >= data->blockpos_min.X && data->blockpos_requested.Y >= data->blockpos_min.Y && data->blockpos_requested.Z >= data->blockpos_min.Z); assert(data->blockpos_requested.X <= data->blockpos_max.X && data->blockpos_requested.Y <= data->blockpos_max.Y && data->blockpos_requested.Z <= data->blockpos_max.Z); this->generating = true; this->vm = data->vmanip; this->ndef = data->nodedef; // Hack: use minimum block coords for old code that assumes a single block v3s16 blockpos = data->blockpos_requested; v3s16 blockpos_min = data->blockpos_min; v3s16 blockpos_max = data->blockpos_max; // Area of central chunk node_min = blockpos_min*MAP_BLOCKSIZE; node_max = (blockpos_max+v3s16(1,1,1))*MAP_BLOCKSIZE-v3s16(1,1,1); // Full allocated area full_node_min = (blockpos_min-1)*MAP_BLOCKSIZE; full_node_max = (blockpos_max+2)*MAP_BLOCKSIZE-v3s16(1,1,1); central_area_size = node_max - node_min + v3s16(1,1,1); assert(central_area_size.X == central_area_size.Z); int volume_blocks = (blockpos_max.X - blockpos_min.X + 1) * (blockpos_max.Y - blockpos_min.Y + 1) * (blockpos_max.Z - blockpos_max.Z + 1); volume_nodes = volume_blocks * MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE; // Create a block-specific seed blockseed = get_blockseed(data->seed, full_node_min); // Make some noise calculateNoise(); c_stone = ndef->getId("mapgen_stone"); c_dirt = ndef->getId("mapgen_dirt"); c_dirt_with_grass = ndef->getId("mapgen_dirt_with_grass"); c_sand = ndef->getId("mapgen_sand"); c_water_source = ndef->getId("mapgen_water_source"); c_lava_source = ndef->getId("mapgen_lava_source"); c_gravel = ndef->getId("mapgen_gravel"); c_cobble = ndef->getId("mapgen_cobble"); c_desert_sand = ndef->getId("mapgen_desert_sand"); c_desert_stone = ndef->getId("mapgen_desert_stone"); c_mossycobble = ndef->getId("mapgen_mossycobble"); c_sandbrick = ndef->getId("mapgen_sandstonebrick"); c_stair_cobble = ndef->getId("mapgen_stair_cobble"); c_stair_sandstone = ndef->getId("mapgen_stair_sandstone"); if (c_desert_sand == CONTENT_IGNORE) c_desert_sand = c_sand; if (c_desert_stone == CONTENT_IGNORE) c_desert_stone = c_stone; if (c_mossycobble == CONTENT_IGNORE) c_mossycobble = c_cobble; if (c_sandbrick == CONTENT_IGNORE) c_sandbrick = c_desert_stone; if (c_stair_cobble == CONTENT_IGNORE) c_stair_cobble = c_cobble; if (c_stair_sandstone == CONTENT_IGNORE) c_stair_sandstone = c_sandbrick; // Maximum height of the stone surface and obstacles. // This is used to guide the cave generation s16 stone_surface_max_y; // Generate general ground level to full area stone_surface_max_y = generateGround(); generateExperimental(); const s16 max_spread_amount = MAP_BLOCKSIZE; // Limit dirt flow area by 1 because mud is flown into neighbors. s16 mudflow_minpos = -max_spread_amount + 1; s16 mudflow_maxpos = central_area_size.X + max_spread_amount - 2; // Loop this part, it will make stuff look older and newer nicely const u32 age_loops = 2; for (u32 i_age = 0; i_age < age_loops; i_age++) { // Aging loop // Make caves (this code is relatively horrible) if (flags & MG_CAVES) generateCaves(stone_surface_max_y); // Add mud to the central chunk addMud(); // Add blobs of dirt and gravel underground addDirtGravelBlobs(); // Flow mud away from steep edges flowMud(mudflow_minpos, mudflow_maxpos); } // Add dungeons if (flags & MG_DUNGEONS) { DungeonParams dp; dp.np_rarity = nparams_dungeon_rarity; dp.np_density = nparams_dungeon_density; dp.np_wetness = nparams_dungeon_wetness; dp.c_water = c_water_source; if (getBiome(0, v2s16(node_min.X, node_min.Z)) == BT_NORMAL) { dp.c_cobble = c_cobble; dp.c_moss = c_mossycobble; dp.c_stair = c_stair_cobble; dp.diagonal_dirs = false; dp.mossratio = 3.0; dp.holesize = v3s16(1, 2, 1); dp.roomsize = v3s16(0, 0, 0); dp.notifytype = GENNOTIFY_DUNGEON; } else { dp.c_cobble = c_sandbrick; dp.c_moss = c_sandbrick; // should make this 'cracked sandstone' later dp.c_stair = c_stair_sandstone; dp.diagonal_dirs = true; dp.mossratio = 0.0; dp.holesize = v3s16(2, 3, 2); dp.roomsize = v3s16(2, 5, 2); dp.notifytype = GENNOTIFY_TEMPLE; } DungeonGen dgen(this, &dp); dgen.generate(blockseed, full_node_min, full_node_max); } // Add top and bottom side of water to transforming_liquid queue updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); // Grow grass growGrass(); // Generate some trees, and add grass, if a jungle if (flags & MG_TREES) placeTreesAndJungleGrass(); // Generate the registered decorations for (unsigned int i = 0; i != emerge->decorations.size(); i++) { Decoration *deco = emerge->decorations[i]; deco->placeDeco(this, blockseed + i, node_min, node_max); } // Generate the registered ores for (unsigned int i = 0; i != emerge->ores.size(); i++) { Ore *ore = emerge->ores[i]; ore->placeOre(this, blockseed + i, node_min, node_max); } // Calculate lighting if (!(flags & MG_NOLIGHT)) calcLighting(node_min - v3s16(1, 1, 1) * MAP_BLOCKSIZE, node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE); this->generating = false; }
BiomeType MapgenV6::getBiome(v2s16 p) { int index = (p.Y - node_min.Z) * ystride + (p.X - node_min.X); return getBiome(index, p); }
void MapgenV6::makeChunk(BlockMakeData *data) { // Pre-conditions assert(data->vmanip); assert(data->nodedef); assert(data->blockpos_requested.X >= data->blockpos_min.X && data->blockpos_requested.Y >= data->blockpos_min.Y && data->blockpos_requested.Z >= data->blockpos_min.Z); assert(data->blockpos_requested.X <= data->blockpos_max.X && data->blockpos_requested.Y <= data->blockpos_max.Y && data->blockpos_requested.Z <= data->blockpos_max.Z); this->generating = true; this->vm = data->vmanip; this->ndef = data->nodedef; // Hack: use minimum block coords for old code that assumes a single block v3s16 blockpos_min = data->blockpos_min; v3s16 blockpos_max = data->blockpos_max; // Area of central chunk node_min = blockpos_min * MAP_BLOCKSIZE; node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1); // Full allocated area full_node_min = (blockpos_min - 1) * MAP_BLOCKSIZE; full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1); central_area_size = node_max - node_min + v3s16(1, 1, 1); assert(central_area_size.X == central_area_size.Z); int volume_blocks = (blockpos_max.X - blockpos_min.X + 1) * (blockpos_max.Y - blockpos_min.Y + 1) * (blockpos_max.Z - blockpos_max.Z + 1); volume_nodes = volume_blocks * MAP_BLOCKSIZE * MAP_BLOCKSIZE * MAP_BLOCKSIZE; // Create a block-specific seed blockseed = get_blockseed(data->seed, full_node_min); // Make some noise calculateNoise(); // Maximum height of the stone surface and obstacles. // This is used to guide the cave generation s16 stone_surface_max_y; // Generate general ground level to full area stone_surface_max_y = generateGround(); generateExperimental(); // Create initial heightmap to limit caves updateHeightmap(node_min, node_max); const s16 max_spread_amount = MAP_BLOCKSIZE; // Limit dirt flow area by 1 because mud is flown into neighbors. s16 mudflow_minpos = -max_spread_amount + 1; s16 mudflow_maxpos = central_area_size.X + max_spread_amount - 2; // Loop this part, it will make stuff look older and newer nicely const u32 age_loops = 2; for (u32 i_age = 0; i_age < age_loops; i_age++) { // Aging loop // Make caves (this code is relatively horrible) if (flags & MG_CAVES) generateCaves(stone_surface_max_y); // Add mud to the central chunk addMud(); // Flow mud away from steep edges if (spflags & MGV6_MUDFLOW) flowMud(mudflow_minpos, mudflow_maxpos); } // Update heightmap after mudflow updateHeightmap(node_min, node_max); // Add dungeons if ((flags & MG_DUNGEONS) && (stone_surface_max_y >= node_min.Y)) { DungeonParams dp; dp.np_rarity = nparams_dungeon_rarity; dp.np_density = nparams_dungeon_density; dp.np_wetness = nparams_dungeon_wetness; dp.c_water = c_water_source; if (getBiome(0, node_min) == BT_DESERT) { dp.c_cobble = c_desert_stone; dp.c_moss = c_desert_stone; dp.c_stair = c_desert_stone; dp.diagonal_dirs = true; dp.mossratio = 0.0; dp.holesize = v3s16(2, 3, 2); dp.roomsize = v3s16(2, 5, 2); dp.notifytype = GENNOTIFY_TEMPLE; } else { dp.c_cobble = c_cobble; dp.c_moss = c_mossycobble; dp.c_stair = c_stair_cobble; dp.diagonal_dirs = false; dp.mossratio = 3.0; dp.holesize = v3s16(1, 2, 1); dp.roomsize = v3s16(0, 0, 0); dp.notifytype = GENNOTIFY_DUNGEON; } DungeonGen dgen(this, &dp); dgen.generate(blockseed, full_node_min, full_node_max); } // Add top and bottom side of water to transforming_liquid queue updateLiquid(full_node_min, full_node_max); // Add surface nodes growGrass(); // Generate some trees, and add grass, if a jungle if (flags & MG_TREES) placeTreesAndJungleGrass(); // Generate the registered decorations m_emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max); // Generate the registered ores m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max); // Calculate lighting if (flags & MG_LIGHT) calcLighting(node_min, node_max); this->generating = false; }
BiomeV6Type MapgenV6::getBiome(v3POS p) { int index = (p.Z - full_node_min.Z) * (ystride + 2 * MAP_BLOCKSIZE) + (p.X - full_node_min.X); return getBiome(index, p); }
void MapgenV6::generateCaves(int max_stone_y) { // 24ms @cs=8 //TimeTaker timer1("caves"); /*double cave_amount = 6.0 + 6.0 * noise2d_perlin( 0.5+(double)node_min.X/250, 0.5+(double)node_min.Y/250, data->seed+34329, 3, 0.50);*/ const s16 max_spread_amount = MAP_BLOCKSIZE; float cave_amount = NoisePerlin2D(np_cave, node_min.X, node_min.Y, seed); cave_amount = MYMAX(0.0, cave_amount); u32 caves_count = cave_amount * volume_nodes / 50000; u32 bruises_count = 1; PseudoRandom ps(blockseed + 21343); PseudoRandom ps2(blockseed + 1032); if (ps.range(1, 6) == 1) bruises_count = ps.range(0, ps.range(0, 2)); if (getBiome(v2s16(node_min.X, node_min.Z)) == BT_DESERT) { caves_count /= 3; bruises_count /= 3; } for(u32 jj = 0; jj < caves_count + bruises_count; jj++) { /*int avg_height = (int) ((base_rock_level_2d(data->seed, v2s16(node_min.X, node_min.Z)) + base_rock_level_2d(data->seed, v2s16(node_max.X, node_max.Z))) / 2); if ((node_max.Y + node_min.Y) / 2 > avg_height) break;*/ bool large_cave = (jj >= caves_count); Cave cave; defineCave(cave, ps, node_min, large_cave); v3f main_direction(0,0,0); // Allowed route area size in nodes v3s16 ar = central_area_size; // Area starting point in nodes v3s16 of = node_min; // Allow a bit more //(this should be more than the maximum radius of the tunnel) s16 insure = 10; s16 more = max_spread_amount - cave.max_tunnel_diameter / 2 - insure; ar += v3s16(1,0,1) * more * 2; of -= v3s16(1,0,1) * more; s16 route_y_min = 0; // Allow half a diameter + 7 over stone surface s16 route_y_max = -of.Y + max_stone_y + cave.max_tunnel_diameter/2 + 7; // Limit maximum to area route_y_max = rangelim(route_y_max, 0, ar.Y-1); if(large_cave) { s16 min = 0; if(node_min.Y < water_level && node_max.Y > water_level) { min = water_level - cave.max_tunnel_diameter/3 - of.Y; route_y_max = water_level + cave.max_tunnel_diameter/3 - of.Y; } route_y_min = ps.range(min, min + cave.max_tunnel_diameter); route_y_min = rangelim(route_y_min, 0, route_y_max); } s16 route_start_y_min = route_y_min; s16 route_start_y_max = route_y_max; route_start_y_min = rangelim(route_start_y_min, 0, ar.Y-1); route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y-1); // Randomize starting position v3f orp( (float)(ps.next()%ar.X)+0.5, (float)(ps.range(route_start_y_min, route_start_y_max))+0.5, (float)(ps.next()%ar.Z)+0.5 ); v3s16 startp(orp.X, orp.Y, orp.Z); startp += of; MapNode airnode(CONTENT_AIR); MapNode waternode(c_water_source); MapNode lavanode(c_lava_source); /* Generate some tunnel starting from orp */ for(u16 j=0; j<cave.tunnel_routepoints; j++) { if(j%cave.dswitchint==0 && large_cave == false) { main_direction = v3f( ((float)(ps.next()%20)-(float)10)/10, ((float)(ps.next()%20)-(float)10)/30, ((float)(ps.next()%20)-(float)10)/10 ); main_direction *= (float)ps.range(0, 10)/10; } // Randomize size s16 min_d = cave.min_tunnel_diameter; s16 max_d = cave.max_tunnel_diameter; s16 rs = ps.range(min_d, max_d); // Every second section is rough bool randomize_xz = (ps2.range(1,2) == 1); v3s16 maxlen; if(large_cave) { maxlen = v3s16( rs*cave.part_max_length_rs, rs*cave.part_max_length_rs/2, rs*cave.part_max_length_rs ); } else { maxlen = v3s16( rs*cave.part_max_length_rs, ps.range(1, rs*cave.part_max_length_rs), rs*cave.part_max_length_rs ); } v3f vec; vec = v3f( (float)(ps.next()%(maxlen.X*1))-(float)maxlen.X/2, (float)(ps.next()%(maxlen.Y*1))-(float)maxlen.Y/2, (float)(ps.next()%(maxlen.Z*1))-(float)maxlen.Z/2 ); // Jump downward sometimes if(!large_cave && ps.range(0,12) == 0) { vec = v3f( (float)(ps.next()%(maxlen.X*1))-(float)maxlen.X/2, (float)(ps.next()%(maxlen.Y*2))-(float)maxlen.Y*2/2, (float)(ps.next()%(maxlen.Z*1))-(float)maxlen.Z/2 ); } /*if(large_cave){ v3f p = orp + vec; s16 h = find_ground_level_clever(vmanip, v2s16(p.X, p.Z), ndef); route_y_min = h - rs/3; route_y_max = h + rs; }*/ vec += main_direction; v3f rp = orp + vec; if(rp.X < 0) rp.X = 0; else if(rp.X >= ar.X) rp.X = ar.X-1; if(rp.Y < route_y_min) rp.Y = route_y_min; else if(rp.Y >= route_y_max) rp.Y = route_y_max-1; if(rp.Z < 0) rp.Z = 0; else if(rp.Z >= ar.Z) rp.Z = ar.Z-1; vec = rp - orp; for(float f=0; f<1.0; f+=1.0/vec.getLength()) { v3f fp = orp + vec * f; fp.X += 0.1*ps.range(-10,10); fp.Z += 0.1*ps.range(-10,10); v3s16 cp(fp.X, fp.Y, fp.Z); s16 d0 = -rs/2; s16 d1 = d0 + rs; if(randomize_xz){ d0 += ps.range(-1,1); d1 += ps.range(-1,1); } for(s16 z0=d0; z0<=d1; z0++) { s16 si = rs/2 - MYMAX(0, abs(z0)-rs/7-1); for(s16 x0=-si-ps.range(0,1); x0<=si-1+ps.range(0,1); x0++) { s16 maxabsxz = MYMAX(abs(x0), abs(z0)); s16 si2 = rs/2 - MYMAX(0, maxabsxz-rs/7-1); for(s16 y0=-si2; y0<=si2; y0++) { /*// Make better floors in small caves if(y0 <= -rs/2 && rs<=7) continue;*/ if (cave.large_cave_is_flat) { // Make large caves not so tall if (rs > 7 && abs(y0) >= rs/3) continue; } s16 z = cp.Z + z0; s16 y = cp.Y + y0; s16 x = cp.X + x0; v3s16 p(x,y,z); p += of; if(vm->m_area.contains(p) == false) continue; u32 i = vm->m_area.index(p); if(large_cave) { if (cave.flooded && full_node_min.Y < water_level && full_node_max.Y > water_level) { if (p.Y <= water_level) vm->m_data[i] = waternode; else vm->m_data[i] = airnode; } else if (cave.flooded && full_node_max.Y < water_level) { if (p.Y < startp.Y - 2) vm->m_data[i] = lavanode; else vm->m_data[i] = airnode; } else { vm->m_data[i] = airnode; } } else { // Don't replace air or water or lava or ignore if (vm->m_data[i].getContent() == CONTENT_IGNORE || vm->m_data[i].getContent() == CONTENT_AIR || vm->m_data[i].getContent() == c_water_source || vm->m_data[i].getContent() == c_lava_source) continue; vm->m_data[i] = airnode; // Set tunnel flag vm->m_flags[i] |= VMANIP_FLAG_CAVE; } } } } } orp = rp; } } }