diff --git a/src/mapgen_torus.cpp b/src/mapgen_torus.cpp new file mode 100644 index 00000000..5326a80b --- /dev/null +++ b/src/mapgen_torus.cpp @@ -0,0 +1,351 @@ +/* +Minetest +Copyright (C) 2010-2015 kwolekr, Ryan Kwolek +Copyright (C) 2010-2015 paramat, Matt Gregory +Copyright (C) 2017 Nuno Ferreira + +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 +#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" // For TimeTaker +#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_torus.h" + + +FlagDesc flagdesc_mapgen_v5[] = { + {NULL, 0} +}; + + +MapgenV5::MapgenV5(int mapgenid, MapgenV5Params *params, EmergeManager *emerge) + : MapgenBasic(mapgenid, params, emerge) +{ + this->spflags = params->spflags; + this->cave_width = params->cave_width; + + // Terrain noise + noise_filler_depth = new Noise(¶ms->np_filler_depth, seed, csize.X, csize.Z); + noise_factor = new Noise(¶ms->np_factor, seed, csize.X, csize.Z); + noise_height = new Noise(¶ms->np_height, seed, csize.X, csize.Z); + + // 3D terrain noise + // 1-up 1-down overgeneration + noise_ground = new Noise(¶ms->np_ground, seed, csize.X, csize.Y + 2, csize.Z); + + MapgenBasic::np_cave1 = params->np_cave1; + MapgenBasic::np_cave2 = params->np_cave2; +} + + +MapgenV5::~MapgenV5() +{ + delete noise_filler_depth; + delete noise_factor; + delete noise_height; + delete noise_ground; +} + + +MapgenV5Params::MapgenV5Params() +{ + spflags = 0; + cave_width = 0.125; + + np_filler_depth = NoiseParams(0, 1, v3f(150, 150, 150), 261, 4, 0.7, 2.0); + np_factor = NoiseParams(0, 1, v3f(250, 250, 250), 920381, 3, 0.45, 2.0); + np_height = NoiseParams(0, 10, v3f(250, 250, 250), 84174, 4, 0.5, 2.0); + np_cave1 = NoiseParams(0, 12, v3f(50, 50, 50), 52534, 4, 0.5, 2.0); + np_cave2 = NoiseParams(0, 12, v3f(50, 50, 50), 10325, 4, 0.5, 2.0); + np_ground = NoiseParams(0, 40, v3f(80, 80, 80), 983240, 4, 0.55, 2.0, NOISE_FLAG_EASED); +} + + +//#define CAVE_NOISE_SCALE 12.0 +//#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE) = 0.125 + + +void MapgenV5Params::readParams(const Settings *settings) +{ + settings->getFlagStrNoEx("mgv5_spflags", spflags, flagdesc_mapgen_v5); + settings->getFloatNoEx("mgv5_cave_width", cave_width); + + settings->getNoiseParams("mgv5_np_filler_depth", np_filler_depth); + settings->getNoiseParams("mgv5_np_factor", np_factor); + settings->getNoiseParams("mgv5_np_height", np_height); + settings->getNoiseParams("mgv5_np_cave1", np_cave1); + settings->getNoiseParams("mgv5_np_cave2", np_cave2); + settings->getNoiseParams("mgv5_np_ground", np_ground); +} + + +void MapgenV5Params::writeParams(Settings *settings) const +{ + settings->setFlagStr("mgv5_spflags", spflags, flagdesc_mapgen_v5, U32_MAX); + settings->setFloat("mgv5_cave_width", cave_width); + + settings->setNoiseParams("mgv5_np_filler_depth", np_filler_depth); + settings->setNoiseParams("mgv5_np_factor", np_factor); + settings->setNoiseParams("mgv5_np_height", np_height); + settings->setNoiseParams("mgv5_np_cave1", np_cave1); + settings->setNoiseParams("mgv5_np_cave2", np_cave2); + settings->setNoiseParams("mgv5_np_ground", np_ground); +} + + +int MapgenV5::getSpawnLevelAtPoint(v2s16 p) +{ + //TimeTaker t("getGroundLevelAtPoint", NULL, PRECISION_MICRO); + + float f = 0.55 + NoisePerlin2D(&noise_factor->np, p.X, p.Y, seed); + if (f < 0.01) + f = 0.01; + else if (f >= 1.0) + f *= 16; + float h = 10000;//NoisePerlin2D(&noise_height->np, p.X, p.Y, seed); + + for (s16 y = 200; y >= -200; y--) { + float n_ground = 10;//NoisePerlin3D(&noise_ground->np, p.X, y, p.Y, seed); + + if (n_ground * f > y - h) { // If solid + // If either top 2 nodes of search are solid this is inside a + // mountain or floatland with possibly no space for the player to spawn. + if (y >= 18) { + return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point + } else { // Ground below at least 2 nodes of empty space + if (y <= water_level || y > water_level + 16) + return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point + else + return y; + } + } + } + + //printf("getGroundLevelAtPoint: %dus\n", t.stop()); + return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn position, no ground found +} + + +void MapgenV5::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); + + // Create a block-specific seed + blockseed = getBlockSeed2(full_node_min, seed); + + // Generate base terrain + s16 stone_surface_max_y = generateBaseTerrain(); + + // Create heightmap + updateHeightmap(node_min, node_max); + + // Init biome generator, place biome-specific nodes, and build biomemap + biomegen->calcBiomeNoise(node_min); + MgStoneType stone_type = generateBiomes(); + + // Generate caves + if ((flags & MG_CAVES) && (stone_surface_max_y >= node_min.Y)) + generateCaves(stone_surface_max_y, MGV5_LARGE_CAVE_DEPTH); + + // Generate dungeons and desert temples + if (flags & MG_DUNGEONS) + generateDungeons(stone_surface_max_y, stone_type); + + // Generate the registered decorations + if (flags & MG_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()); + + // Add top and bottom side of water to transforming_liquid queue + updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); + + // Calculate lighting + if (flags & MG_LIGHT) { + calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0), + full_node_min, full_node_max); + } + + this->generating = false; +} + + +//bool is_cave(u32 index) { +// double d1 = contour(noise_cave1->result[index]); +// double d2 = contour(noise_cave2->result[index]); +// return d1*d2 > CAVE_NOISE_THRESHOLD; +//} + +//bool val_is_ground(v3s16 p, u32 index, u32 index2d) { +// double f = 0.55 + noise_factor->result[index2d]; +// if(f < 0.01) +// f = 0.01; +// else if(f >= 1.0) +// f *= 1.6; +// double h = WATER_LEVEL + 10 * noise_height->result[index2d]; +// return (noise_ground->result[index] * f > (double)p.Y - h); +//} + + +int MapgenV5::generateBaseTerrain() +{ + u32 index = 0; + u32 index2d = 0; + int stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT; + + noise_factor->perlinMap2D(node_min.X, node_min.Z); + noise_height->perlinMap2D(node_min.X, node_min.Z); + noise_ground->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z); + + 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++, vi++, index++, index2d++) { + if (vm->m_data[vi].getContent() != CONTENT_IGNORE) + continue; + + + + + //if ( x-50) + //~ vm->m_data[vi] = MapNode(c_stone); + //~ else + //~ vm->m_data[vi] = MapNode(c_water_source); + //~ if (y > stone_surface_max_y) + //~ stone_surface_max_y = y; + //~ } else { + //~ vm->m_data[vi] = MapNode(CONTENT_AIR);} + + + + //~ if ( (x*x + y*y + z*z + 20*y - 1)*(pow(x*x+y*y+z*z-2*y-1,2)-800*z*z) + 100*x*z*(x*x + y*y + z*z + 2*y - 1) < 0 ) //klein bottle + //~ { + //~ if (y>-50) + //~ vm->m_data[vi] = MapNode(c_stone); + //~ else + //~ vm->m_data[vi] = MapNode(c_water_source); + //~ if (y > stone_surface_max_y) + //~ stone_surface_max_y = y; + //~ } else { + //~ vm->m_data[vi] = MapNode(CONTENT_AIR);} + + + + + + if ( pow((50-sqrt(x*x+z*z)),2) + y*y < 200 ) //torus + //~ // if ( x*x + z*z + y*y < 100 ) //circle + { + if (y>-50) + vm->m_data[vi] = MapNode(c_stone); + else + vm->m_data[vi] = MapNode(c_water_source); + if (y > stone_surface_max_y) + stone_surface_max_y = y; + } else { + vm->m_data[vi] = MapNode(CONTENT_AIR);} + + + + + //~ if (y <= 10*sin(0.1*x)+10*sin(0.1*z) ) //y=f(x,z) + //~ { + //~ if (y>-50) + //~ vm->m_data[vi] = MapNode(c_stone); + //~ if (y > stone_surface_max_y) + //~ stone_surface_max_y = y; + //~ } else if(y<0){ + //~ vm->m_data[vi] = MapNode(c_water_source); + //~ } + //~ else { + //~ vm->m_data[vi] = MapNode(CONTENT_AIR);} + + + //~ if (y <= -0.1*x*x ) //y=f(x,z) + //~ { + //~ if (y>-50) + //~ vm->m_data[vi] = MapNode(c_stone); + //~ if (y > stone_surface_max_y) + //~ stone_surface_max_y = y; + //~ } else if(y<-100000){ + //~ vm->m_data[vi] = MapNode(c_water_source); + //~ } + //~ else { + //~ vm->m_data[vi] = MapNode(CONTENT_AIR);} + + + + + + + + + + + + + } + index2d -= ystride; + } + index2d += ystride; + } + + return stone_surface_max_y; +}