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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(const std::string &map_meta_path):
- m_map_meta_path(map_meta_path),
- m_hierarchy(g_settings)
- {
- /*
- * We build our own hierarchy which falls back to the global one.
- * It looks as follows: (lowest prio first)
- * 0: whatever is picked up from g_settings (incl. engine defaults)
- * 1: defaults set by scripts (override_meta = false)
- * 2: settings present in map_meta.txt or overridden by scripts
- */
- m_defaults = new Settings("", &m_hierarchy, 1);
- m_map_settings = new Settings("[end_of_params]", &m_hierarchy, 2);
- }
- MapSettingsManager::~MapSettingsManager()
- {
- delete m_defaults;
- delete m_map_settings;
- delete mapgen_params;
- }
- bool MapSettingsManager::getMapSetting(
- const std::string &name, std::string *value_out) const
- {
- return m_map_settings->getNoEx(name, *value_out);
- }
- bool MapSettingsManager::getMapSettingNoiseParams(
- const std::string &name, NoiseParams *value_out) const
- {
- // TODO: Rename to "getNoiseParams"
- return m_map_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_defaults->set(name, value);
- return true;
- }
- bool MapSettingsManager::setMapSettingNoiseParams(
- const std::string &name, const NoiseParams *value, bool override_meta)
- {
- if (mapgen_params)
- return false;
- if (override_meta)
- m_map_settings->setNoiseParams(name, *value);
- else
- m_defaults->setNoiseParams(name, *value);
- 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)) {
- errorstream << "loadMapMeta: Format error. '[end_of_params]' missing?" << std::endl;
- return false;
- }
- return true;
- }
- bool MapSettingsManager::saveMapMeta()
- {
- // If mapgen params haven't been created yet; abort
- if (!mapgen_params) {
- infostream << "saveMapMeta: mapgen_params not present! "
- << "Server startup was probably interrupted." << std::endl;
- return false;
- }
- // Paths set up by subgames.cpp, but not in unittests
- if (!fs::CreateAllDirs(fs::RemoveLastPathComponent(m_map_meta_path))) {
- errorstream << "saveMapMeta: could not create dirs to "
- << m_map_meta_path;
- return false;
- }
- mapgen_params->MapgenParams::writeParams(m_map_settings);
- mapgen_params->writeParams(m_map_settings);
- if (!m_map_settings->updateConfigFile(m_map_meta_path.c_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_map_settings);
- assert(m_defaults);
- // 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)
- return nullptr;
- params->mgtype = mgtype;
- // Load the rest of the mapgen params from our active settings
- params->MapgenParams::readParams(m_map_settings);
- params->readParams(m_map_settings);
- // Hold onto our params
- mapgen_params = params;
- return params;
- }
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