minetest.git - modified minetest for gpcfs purposes

diff options

Diffstat (limited to 'misc/minetest-xorg-icon-128.png')

0 files changed, 0 insertions, 0 deletions

/* Minetest Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net> This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "mapgen.h" #include "voxel.h" #include "noise.h" #include "mapblock.h" #include "mapnode.h" #include "map.h" #include "content_sao.h" #include "nodedef.h" #include "voxelalgorithms.h" #include "profiler.h" #include "settings.h" // For g_settings #include "emerge.h" #include "dungeongen.h" #include "cavegen.h" #include "treegen.h" #include "mg_biome.h" #include "mg_ore.h" #include "mg_decoration.h" #include "mapgen_v7.h" FlagDesc flagdesc_mapgen_v7[] = { {"mountains", MGV7_MOUNTAINS}, {"ridges", MGV7_RIDGES}, {NULL, 0} }; /////////////////////////////////////////////////////////////////////////////// MapgenV7::MapgenV7(int mapgenid, MapgenParams *params, EmergeManager *emerge) : Mapgen(mapgenid, params, emerge) { this->m_emerge = emerge; this->bmgr = emerge->biomemgr; //// amount of elements to skip for the next index //// for noise/height/biome maps (not vmanip) this->ystride = csize.X; this->zstride = csize.X * (csize.Y + 2); this->biomemap = new u8[csize.X * csize.Z]; this->heightmap = new s16[csize.X * csize.Z]; this->ridge_heightmap = new s16[csize.X * csize.Z]; MapgenV7Params *sp = (MapgenV7Params *)params->sparams; this->spflags = sp->spflags; //// Terrain noise noise_terrain_base = new Noise(&sp->np_terrain_base, seed, csize.X, csize.Z); noise_terrain_alt = new Noise(&sp->np_terrain_alt, seed, csize.X, csize.Z); noise_terrain_persist = new Noise(&sp->np_terrain_persist, seed, csize.X, csize.Z); noise_height_select = new Noise(&sp->np_height_select, seed, csize.X, csize.Z); noise_filler_depth = new Noise(&sp->np_filler_depth, seed, csize.X, csize.Z); noise_mount_height = new Noise(&sp->np_mount_height, seed, csize.X, csize.Z); noise_ridge_uwater = new Noise(&sp->np_ridge_uwater, seed, csize.X, csize.Z); //// 3d terrain noise noise_mountain = new Noise(&sp->np_mountain, seed, csize.X, csize.Y + 2, csize.Z); noise_ridge = new Noise(&sp->np_ridge, seed, csize.X, csize.Y + 2, csize.Z); noise_cave1 = new Noise(&sp->np_cave1, seed, csize.X, csize.Y + 2, csize.Z); noise_cave2 = new Noise(&sp->np_cave2, seed, csize.X, csize.Y + 2, csize.Z); //// Biome noise noise_heat = new Noise(&params->np_biome_heat, seed, csize.X, csize.Z); noise_humidity = new Noise(&params->np_biome_humidity, seed, csize.X, csize.Z); //// Resolve nodes to be used INodeDefManager *ndef = emerge->ndef; c_stone = ndef->getId("mapgen_stone"); c_water_source = ndef->getId("mapgen_water_source"); c_lava_source = ndef->getId("mapgen_lava_source"); c_desert_stone = ndef->getId("mapgen_desert_stone"); c_ice = ndef->getId("mapgen_ice"); c_sandstone = ndef->getId("mapgen_sandstone"); c_cobble = ndef->getId("mapgen_cobble"); c_stair_cobble = ndef->getId("mapgen_stair_cobble"); c_mossycobble = ndef->getId("mapgen_mossycobble"); c_sandstonebrick = ndef->getId("mapgen_sandstonebrick"); c_stair_sandstonebrick = ndef->getId("mapgen_stair_sandstonebrick"); if (c_ice == CONTENT_IGNORE) c_ice = CONTENT_AIR; if (c_mossycobble == CONTENT_IGNORE) c_mossycobble = c_cobble; if (c_stair_cobble == CONTENT_IGNORE) c_stair_cobble = c_cobble; if (c_sandstonebrick == CONTENT_IGNORE) c_sandstonebrick = c_sandstone; if (c_stair_sandstonebrick == CONTENT_IGNORE) c_stair_sandstonebrick = c_sandstone; } MapgenV7::~MapgenV7() { delete noise_terrain_base; delete noise_terrain_persist; delete noise_height_select; delete noise_terrain_alt; delete noise_filler_depth; delete noise_mount_height; delete noise_ridge_uwater; delete noise_mountain; delete noise_ridge; delete noise_cave1; delete noise_cave2; delete noise_heat; delete noise_humidity; delete[] ridge_heightmap; delete[] heightmap; delete[] biomemap; } MapgenV7Params::MapgenV7Params() { spflags = MGV7_MOUNTAINS | MGV7_RIDGES; np_terrain_base = NoiseParams(4, 70, v3f(600, 600, 600), 82341, 6, 0.7, 2.0); np_terrain_alt = NoiseParams(4, 25, v3f(600, 600, 600), 5934, 5, 0.6, 2.0); np_terrain_persist = NoiseParams(0.6, 0.1, v3f(500, 500, 500), 539, 3, 0.6, 2.0); np_height_select = NoiseParams(-12, 24, v3f(500, 500, 500), 4213, 6, 0.69, 2.0); np_filler_depth = NoiseParams(0, 1.2, v3f(150, 150, 150), 261, 4, 0.7, 2.0); np_mount_height = NoiseParams(184, 72, v3f(500, 500, 500), 72449, 4, 0.6, 2.0); np_ridge_uwater = NoiseParams(0, 1, v3f(1000, 1000, 1000), 85039, 5, 0.6, 2.0); np_mountain = NoiseParams(-0.6, 1, v3f(250, 350, 250), 5333, 5, 0.68, 2.0); np_ridge = NoiseParams(0, 1, v3f(100, 100, 100), 6467, 4, 0.75, 2.0); np_cave1 = NoiseParams(0, 12, v3f(100, 100, 100), 52534, 4, 0.5, 2.0); np_cave2 = NoiseParams(0, 12, v3f(100, 100, 100), 10325, 4, 0.5, 2.0); } void MapgenV7Params::readParams(const Settings *settings) { settings->getFlagStrNoEx("mgv7_spflags", spflags, flagdesc_mapgen_v7); settings->getNoiseParams("mgv7_np_terrain_base", np_terrain_base); settings->getNoiseParams("mgv7_np_terrain_alt", np_terrain_alt); settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist); settings->getNoiseParams("mgv7_np_height_select", np_height_select); settings->getNoiseParams("mgv7_np_filler_depth", np_filler_depth); settings->getNoiseParams("mgv7_np_mount_height", np_mount_height); settings->getNoiseParams("mgv7_np_ridge_uwater", np_ridge_uwater); settings->getNoiseParams("mgv7_np_mountain", np_mountain); settings->getNoiseParams("mgv7_np_ridge", np_ridge); settings->getNoiseParams("mgv7_np_cave1", np_cave1); settings->getNoiseParams("mgv7_np_cave2", np_cave2); } void MapgenV7Params::writeParams(Settings *settings) const { settings->setFlagStr("mgv7_spflags", spflags, flagdesc_mapgen_v7, (u32)-1); settings->setNoiseParams("mgv7_np_terrain_base", np_terrain_base); settings->setNoiseParams("mgv7_np_terrain_alt", np_terrain_alt); settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist); settings->setNoiseParams("mgv7_np_height_select", np_height_select); settings->setNoiseParams("mgv7_np_filler_depth", np_filler_depth); settings->setNoiseParams("mgv7_np_mount_height", np_mount_height); settings->setNoiseParams("mgv7_np_ridge_uwater", np_ridge_uwater); settings->setNoiseParams("mgv7_np_mountain", np_mountain); settings->setNoiseParams("mgv7_np_ridge", np_ridge); settings->setNoiseParams("mgv7_np_cave1", np_cave1); settings->setNoiseParams("mgv7_np_cave2", np_cave2); } /////////////////////////////////////// int MapgenV7::getGroundLevelAtPoint(v2s16 p) { // Base terrain calculation s16 y = baseTerrainLevelAtPoint(p.X, p.Y); // Ridge/river terrain calculation float width = 0.2; float uwatern = NoisePerlin2D(&noise_ridge_uwater->np, p.X, p.Y, seed) * 2; // actually computing the depth of the ridge is much more expensive; // if inside a river, simply guess if (fabs(uwatern) <= width) return water_level - 10; // Mountain terrain calculation int iters = 128; // don't even bother iterating more than 128 times.. while (iters--) { //current point would have been air if (!getMountainTerrainAtPoint(p.X, y, p.Y)) return y; y++; } return y; } void MapgenV7::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; //TimeTaker t("makeChunk"); v3s16 blockpos_min = data->blockpos_min; v3s16 blockpos_max = data->blockpos_max; node_min = blockpos_min * MAP_BLOCKSIZE; node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1); full_node_min = (blockpos_min - 1) * MAP_BLOCKSIZE; full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1); blockseed = getBlockSeed2(full_node_min, seed); // Make some noise calculateNoise(); // Generate base terrain, mountains, and ridges with initial heightmaps s16 stone_surface_max_y = generateTerrain(); // Create heightmap updateHeightmap(node_min, node_max); // Create biomemap at heightmap surface bmgr->calcBiomes(csize.X, csize.Z, noise_heat->result, noise_humidity->result, heightmap, biomemap); // Actually place the biome-specific nodes MgStoneType stone_type = generateBiomes(noise_heat->result, noise_humidity->result); if (flags & MG_CAVES) generateCaves(stone_surface_max_y); 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 (stone_type == STONE) { 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 if (stone_type == DESERT_STONE) { 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 if (stone_type == SANDSTONE) { dp.c_cobble = c_sandstonebrick; dp.c_moss = c_sandstonebrick; dp.c_stair = c_sandstonebrick; dp.diagonal_dirs = false; dp.mossratio = 0.0; dp.holesize = v3s16(2, 2, 2); dp.roomsize = v3s16(2, 0, 2); dp.notifytype = GENNOTIFY_DUNGEON; } DungeonGen dgen(this, &dp); dgen.generate(blockseed, full_node_min, full_node_max); } // 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); // Sprinkle some dust on top after everything else was generated dustTopNodes(); //printf("makeChunk: %dms\n", t.stop()); updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); if (flags & MG_LIGHT) calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0), full_node_min, full_node_max); //setLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE, // node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE, 0xFF); this->generating = false; } void MapgenV7::calculateNoise() { //TimeTaker t("calculateNoise", NULL, PRECISION_MICRO); int x = node_min.X; int y = node_min.Y - 1; int z = node_min.Z; noise_terrain_persist->perlinMap2D(x, z); float *persistmap = noise_terrain_persist->result; noise_terrain_base->perlinMap2D(x, z, persistmap); noise_terrain_alt->perlinMap2D(x, z, persistmap); noise_height_select->perlinMap2D(x, z); if (flags & MG_CAVES) { noise_cave1->perlinMap3D(x, y, z); noise_cave2->perlinMap3D(x, y, z); } if ((spflags & MGV7_RIDGES) && node_max.Y >= water_level) { noise_ridge->perlinMap3D(x, y, z); noise_ridge_uwater->perlinMap2D(x, z); } if ((spflags & MGV7_MOUNTAINS) && node_max.Y >= 0) { noise_mountain->perlinMap3D(x, y, z); noise_mount_height->perlinMap2D(x, z); } if (node_max.Y >= BIOMEGEN_BASE_V7) { noise_filler_depth->perlinMap2D(x, z); noise_heat->perlinMap2D(x, z); noise_humidity->perlinMap2D(x, z); } //printf("calculateNoise: %dus\n", t.stop()); } Biome *MapgenV7::getBiomeAtPoint(v3s16 p) { float heat = NoisePerlin2D(&noise_heat->np, p.X, p.Z, seed); float humidity = NoisePerlin2D(&noise_humidity->np, p.X, p.Z, seed); s16 groundlevel = baseTerrainLevelAtPoint(p.X, p.Z); return bmgr->getBiome(heat, humidity, groundlevel); } //needs to be updated float MapgenV7::baseTerrainLevelAtPoint(int x, int z) { float hselect = NoisePerlin2D(&noise_height_select->np, x, z, seed); hselect = rangelim(hselect, 0.0, 1.0); float persist = NoisePerlin2D(&noise_terrain_persist->np, x, z, seed); noise_terrain_base->np.persist = persist; float height_base = NoisePerlin2D(&noise_terrain_base->np, x, z, seed); noise_terrain_alt->np.persist = persist; float height_alt = NoisePerlin2D(&noise_terrain_alt->np, x, z, seed); if (height_alt > height_base) return height_alt; return (height_base * hselect) + (height_alt * (1.0 - hselect)); } float MapgenV7::baseTerrainLevelFromMap(int index) { float hselect = rangelim(noise_height_select->result[index], 0.0, 1.0); float height_base = noise_terrain_base->result[index]; float height_alt = noise_terrain_alt->result[index]; if (height_alt > height_base) return height_alt; return (height_base * hselect) + (height_alt * (1.0 - hselect)); } bool MapgenV7::getMountainTerrainAtPoint(int x, int y, int z) { float mnt_h_n = NoisePerlin2D(&noise_mount_height->np, x, z, seed); float mnt_n = NoisePerlin3D(&noise_mountain->np, x, y, z, seed); return mnt_n * mnt_h_n >= (float)y; } bool MapgenV7::getMountainTerrainFromMap(int idx_xyz, int idx_xz, int y) { float mounthn = noise_mount_height->result[idx_xz]; float mountn = noise_mountain->result[idx_xyz]; return mountn * mounthn >= (float)y; } #if 0 void MapgenV7::carveRivers() { MapNode n_air(CONTENT_AIR), n_water_source(c_water_source); MapNode n_stone(c_stone); u32 index = 0; int river_depth = 4; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index++) { float terrain_mod = noise_terrain_mod->result[index]; NoiseParams *np = noise_terrain_river->np; np.persist = noise_terrain_persist->result[index]; float terrain_river = NoisePerlin2DNoTxfm(np, x, z, seed); float height = terrain_river * (1 - abs(terrain_mod)) * noise_terrain_river->np.scale; height = log(height * height); //log(h^3) is pretty interesting for terrain s16 y = heightmap[index]; if (height < 1.0 && y > river_depth && y - river_depth >= node_min.Y && y <= node_max.Y) { for (s16 ry = y; ry != y - river_depth; ry--) { u32 vi = vm->m_area.index(x, ry, z); vm->m_data[vi] = n_air; } u32 vi = vm->m_area.index(x, y - river_depth, z); vm->m_data[vi] = n_water_source; } } } #endif int MapgenV7::generateTerrain() { int ymax = generateBaseTerrain(); if (spflags & MGV7_MOUNTAINS) ymax = generateMountainTerrain(ymax); if (spflags & MGV7_RIDGES) generateRidgeTerrain(); return ymax; } int MapgenV7::generateBaseTerrain() { MapNode n_air(CONTENT_AIR); MapNode n_stone(c_stone); MapNode n_water(c_water_source); int stone_surface_max_y = -MAP_GENERATION_LIMIT; v3s16 em = vm->m_area.getExtent(); 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++) { float surface_height = baseTerrainLevelFromMap(index); s16 surface_y = (s16)surface_height; heightmap[index] = surface_y; ridge_heightmap[index] = surface_y; if (surface_y > stone_surface_max_y) stone_surface_max_y = surface_y; u32 i = vm->m_area.index(x, node_min.Y - 1, z); for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) { if (vm->m_data[i].getContent() == CONTENT_IGNORE) { if (y <= surface_y) vm->m_data[i] = n_stone; else if (y <= water_level) vm->m_data[i] = n_water; else vm->m_data[i] = n_air; } vm->m_area.add_y(em, i, 1); } } return stone_surface_max_y; } int MapgenV7::generateMountainTerrain(int ymax) { if (node_max.Y < 0) return ymax; MapNode n_stone(c_stone); u32 j = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) { u32 vi = vm->m_area.index(node_min.X, y, z); for (s16 x = node_min.X; x <= node_max.X; x++) { int index = (z - node_min.Z) * csize.X + (x - node_min.X); content_t c = vm->m_data[vi].getContent(); if (getMountainTerrainFromMap(j, index, y) && (c == CONTENT_AIR || c == c_water_source)) { vm->m_data[vi] = n_stone; if (y > ymax) ymax = y; } vi++; j++; } } return ymax; } void MapgenV7::generateRidgeTerrain() { if (node_max.Y < water_level) return; MapNode n_water(c_water_source); MapNode n_air(CONTENT_AIR); u32 index = 0; float width = 0.2; // TODO: figure out acceptable perlin noise values for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) { u32 vi = vm->m_area.index(node_min.X, y, z); for (s16 x = node_min.X; x <= node_max.X; x++, index++, vi++) { int j = (z - node_min.Z) * csize.X + (x - node_min.X); if (heightmap[j] < water_level - 16) continue; float uwatern = noise_ridge_uwater->result[j] * 2; if (fabs(uwatern) > width) continue; float altitude = y - water_level; float height_mod = (altitude + 17) / 2.5; float width_mod = width - fabs(uwatern); float nridge = noise_ridge->result[index] * MYMAX(altitude, 0) / 7.0; if (nridge + width_mod * height_mod < 0.6) continue; if (y < ridge_heightmap[j]) ridge_heightmap[j] = y - 1; vm->m_data[vi] = (y > water_level) ? n_air : n_water; } } }


context:
space:
mode: