minetest.git - modified minetest for gpcfs purposes

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Diffstat (limited to 'src/script/lua_api/l_util.h')

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/* Minetest Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net> Copyright (C) 2014-2017 paramat 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 "mg_biome.h" #include "mg_decoration.h" #include "emerge.h" #include "server.h" #include "nodedef.h" #include "map.h" //for MMVManip #include "util/numeric.h" #include "porting.h" #include "settings.h" /////////////////////////////////////////////////////////////////////////////// BiomeManager::BiomeManager(Server *server) : ObjDefManager(server, OBJDEF_BIOME) { m_server = server; // Create default biome to be used in case none exist Biome *b = new Biome; b->name = "Default"; b->flags = 0; b->depth_top = 0; b->depth_filler = -MAX_MAP_GENERATION_LIMIT; b->depth_water_top = 0; b->depth_riverbed = 0; b->y_min = -MAX_MAP_GENERATION_LIMIT; b->y_max = MAX_MAP_GENERATION_LIMIT; b->heat_point = 0.0; b->humidity_point = 0.0; b->m_nodenames.push_back("mapgen_stone"); b->m_nodenames.push_back("mapgen_stone"); b->m_nodenames.push_back("mapgen_stone"); b->m_nodenames.push_back("mapgen_water_source"); b->m_nodenames.push_back("mapgen_water_source"); b->m_nodenames.push_back("mapgen_river_water_source"); b->m_nodenames.push_back("mapgen_stone"); b->m_nodenames.push_back("ignore"); m_ndef->pendNodeResolve(b); add(b); } BiomeManager::~BiomeManager() { } void BiomeManager::clear() { EmergeManager *emerge = m_server->getEmergeManager(); // Remove all dangling references in Decorations DecorationManager *decomgr = emerge->decomgr; for (size_t i = 0; i != decomgr->getNumObjects(); i++) { Decoration *deco = (Decoration *)decomgr->getRaw(i); deco->biomes.clear(); } // Don't delete the first biome for (size_t i = 1; i < m_objects.size(); i++) delete (Biome *)m_objects[i]; m_objects.resize(1); } //////////////////////////////////////////////////////////////////////////////// void BiomeParamsOriginal::readParams(const Settings *settings) { settings->getNoiseParams("mg_biome_np_heat", np_heat); settings->getNoiseParams("mg_biome_np_heat_blend", np_heat_blend); settings->getNoiseParams("mg_biome_np_humidity", np_humidity); settings->getNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend); } void BiomeParamsOriginal::writeParams(Settings *settings) const { settings->setNoiseParams("mg_biome_np_heat", np_heat); settings->setNoiseParams("mg_biome_np_heat_blend", np_heat_blend); settings->setNoiseParams("mg_biome_np_humidity", np_humidity); settings->setNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend); } //////////////////////////////////////////////////////////////////////////////// BiomeGenOriginal::BiomeGenOriginal(BiomeManager *biomemgr, BiomeParamsOriginal *params, v3s16 chunksize) { m_bmgr = biomemgr; m_params = params; m_csize = chunksize; noise_heat = new Noise(&params->np_heat, params->seed, m_csize.X, m_csize.Z); noise_humidity = new Noise(&params->np_humidity, params->seed, m_csize.X, m_csize.Z); noise_heat_blend = new Noise(&params->np_heat_blend, params->seed, m_csize.X, m_csize.Z); noise_humidity_blend = new Noise(&params->np_humidity_blend, params->seed, m_csize.X, m_csize.Z); heatmap = noise_heat->result; humidmap = noise_humidity->result; biomemap = new biome_t[m_csize.X * m_csize.Z]; } BiomeGenOriginal::~BiomeGenOriginal() { delete []biomemap; delete noise_heat; delete noise_humidity; delete noise_heat_blend; delete noise_humidity_blend; } Biome *BiomeGenOriginal::calcBiomeAtPoint(v3s16 pos) const { float heat = NoisePerlin2D(&m_params->np_heat, pos.X, pos.Z, m_params->seed) + NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed); float humidity = NoisePerlin2D(&m_params->np_humidity, pos.X, pos.Z, m_params->seed) + NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed); return calcBiomeFromNoise(heat, humidity, pos.Y); } void BiomeGenOriginal::calcBiomeNoise(v3s16 pmin) { m_pmin = pmin; noise_heat->perlinMap2D(pmin.X, pmin.Z); noise_humidity->perlinMap2D(pmin.X, pmin.Z); noise_heat_blend->perlinMap2D(pmin.X, pmin.Z); noise_humidity_blend->perlinMap2D(pmin.X, pmin.Z); for (s32 i = 0; i < m_csize.X * m_csize.Z; i++) { noise_heat->result[i] += noise_heat_blend->result[i]; noise_humidity->result[i] += noise_humidity_blend->result[i]; } } biome_t *BiomeGenOriginal::getBiomes(s16 *heightmap) { for (s32 i = 0; i != m_csize.X * m_csize.Z; i++) { Biome *biome = calcBiomeFromNoise( noise_heat->result[i], noise_humidity->result[i], heightmap[i]); biomemap[i] = biome->index; } return biomemap; } Biome *BiomeGenOriginal::getBiomeAtPoint(v3s16 pos) const { return getBiomeAtIndex( (pos.Z - m_pmin.Z) * m_csize.X + (pos.X - m_pmin.X), pos.Y); } Biome *BiomeGenOriginal::getBiomeAtIndex(size_t index, s16 y) const { return calcBiomeFromNoise( noise_heat->result[index], noise_humidity->result[index], y); } Biome *BiomeGenOriginal::calcBiomeFromNoise(float heat, float humidity, s16 y) const { Biome *b, *biome_closest = NULL; float dist_min = FLT_MAX; for (size_t i = 1; i < m_bmgr->getNumObjects(); i++) { b = (Biome *)m_bmgr->getRaw(i); if (!b || y > b->y_max || y < b->y_min) continue; float d_heat = heat - b->heat_point; float d_humidity = humidity - b->humidity_point; float dist = (d_heat * d_heat) + (d_humidity * d_humidity); if (dist < dist_min) { dist_min = dist; biome_closest = b; } } return biome_closest ? biome_closest : (Biome *)m_bmgr->getRaw(BIOME_NONE); } ////////////////////////////////////////////////////////////////////////////////


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