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- /*
- 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 "debug.h"
- #include "filesys.h"
- #include "log.h"
- #include "mapgen/mapgen.h"
- #include "settings.h"
- #include "map_settings_manager.h"
- MapSettingsManager::MapSettingsManager(Settings *user_settings,
- const std::string &map_meta_path):
- m_map_meta_path(map_meta_path),
- m_map_settings(new Settings()),
- m_user_settings(user_settings)
- {
- assert(m_user_settings != NULL);
- }
- MapSettingsManager::~MapSettingsManager()
- {
- delete m_map_settings;
- delete mapgen_params;
- }
- bool MapSettingsManager::getMapSetting(
- const std::string &name, std::string *value_out)
- {
- if (m_map_settings->getNoEx(name, *value_out))
- return true;
- // Compatibility kludge
- if (m_user_settings == g_settings && name == "seed")
- return m_user_settings->getNoEx("fixed_map_seed", *value_out);
- return m_user_settings->getNoEx(name, *value_out);
- }
- bool MapSettingsManager::getMapSettingNoiseParams(
- const std::string &name, NoiseParams *value_out)
- {
- return m_map_settings->getNoiseParams(name, *value_out) ||
- m_user_settings->getNoiseParams(name, *value_out);
- }
- bool MapSettingsManager::setMapSetting(
- const std::string &name, const std::string &value, bool override_meta)
- {
- if (mapgen_params)
- return false;
- if (override_meta)
- m_map_settings->set(name, value);
- else
- m_map_settings->setDefault(name, value);
- return true;
- }
- bool MapSettingsManager::setMapSettingNoiseParams(
- const std::string &name, const NoiseParams *value, bool override_meta)
- {
- if (mapgen_params)
- return false;
- m_map_settings->setNoiseParams(name, *value, !override_meta);
- return true;
- }
- bool MapSettingsManager::loadMapMeta()
- {
- std::ifstream is(m_map_meta_path.c_str(), std::ios_base::binary);
- if (!is.good()) {
- errorstream << "loadMapMeta: could not open "
- << m_map_meta_path << std::endl;
- return false;
- }
- if (!m_map_settings->parseConfigLines(is, "[end_of_params]")) {
- errorstream << "loadMapMeta: [end_of_params] not found!" << std::endl;
- return false;
- }
- return true;
- }
- bool MapSettingsManager::saveMapMeta()
- {
- // If mapgen params haven't been created yet; abort
- if (!mapgen_params)
- return false;
- if (!fs::CreateAllDirs(fs::RemoveLastPathComponent(m_map_meta_path))) {
- errorstream << "saveMapMeta: could not create dirs to "
- << m_map_meta_path;
- return false;
- }
- std::ostringstream oss(std::ios_base::binary);
- Settings conf;
- mapgen_params->MapgenParams::writeParams(&conf);
- mapgen_params->writeParams(&conf);
- conf.writeLines(oss);
- // NOTE: If there are ever types of map settings other than
- // those relating to map generation, save them here
- oss << "[end_of_params]\n";
- if (!fs::safeWriteToFile(m_map_meta_path, oss.str())) {
- errorstream << "saveMapMeta: could not write "
- << m_map_meta_path << std::endl;
- return false;
- }
- return true;
- }
- MapgenParams *MapSettingsManager::makeMapgenParams()
- {
- if (mapgen_params)
- return mapgen_params;
- assert(m_user_settings != NULL);
- assert(m_map_settings != NULL);
- // At this point, we have (in order of precedence):
- // 1). m_mapgen_settings->m_settings containing map_meta.txt settings or
- // explicit overrides from scripts
- // 2). m_mapgen_settings->m_defaults containing script-set mgparams without
- // overrides
- // 3). g_settings->m_settings containing all user-specified config file
- // settings
- // 4). g_settings->m_defaults containing any low-priority settings from
- // scripts, e.g. mods using Lua as an enhanced config file)
- // Now, get the mapgen type so we can create the appropriate MapgenParams
- std::string mg_name;
- MapgenType mgtype = getMapSetting("mg_name", &mg_name) ?
- Mapgen::getMapgenType(mg_name) : MAPGEN_DEFAULT;
- if (mgtype == MAPGEN_INVALID) {
- errorstream << "EmergeManager: mapgen '" << mg_name <<
- "' not valid; falling back to " <<
- Mapgen::getMapgenName(MAPGEN_DEFAULT) << std::endl;
- mgtype = MAPGEN_DEFAULT;
- }
- // Create our MapgenParams
- MapgenParams *params = Mapgen::createMapgenParams(mgtype);
- if (params == NULL)
- return NULL;
- params->mgtype = mgtype;
- // Load the rest of the mapgen params from our active settings
- params->MapgenParams::readParams(m_user_settings);
- params->MapgenParams::readParams(m_map_settings);
- params->readParams(m_user_settings);
- params->readParams(m_map_settings);
- // Hold onto our params
- mapgen_params = params;
- return params;
- }
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