mirror of
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195 lines
5.0 KiB
C++
195 lines
5.0 KiB
C++
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/*
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Minetest
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Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "debug.h"
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#include "filesys.h"
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#include "log.h"
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#include "mapgen.h"
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#include "settings.h"
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#include "map_settings_manager.h"
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MapSettingsManager::MapSettingsManager(
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Settings *user_settings, const std::string &map_meta_path)
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{
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m_map_meta_path = map_meta_path;
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m_user_settings = user_settings;
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m_map_settings = new Settings;
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mapgen_params = NULL;
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assert(m_user_settings != NULL);
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}
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MapSettingsManager::~MapSettingsManager()
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{
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delete m_map_settings;
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delete mapgen_params;
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}
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bool MapSettingsManager::getMapSetting(
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const std::string &name, std::string *value_out)
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{
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if (m_map_settings->getNoEx(name, *value_out))
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return true;
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// Compatibility kludge
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if (m_user_settings == g_settings && name == "seed")
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return m_user_settings->getNoEx("fixed_map_seed", *value_out);
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return m_user_settings->getNoEx(name, *value_out);
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}
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bool MapSettingsManager::getMapSettingNoiseParams(
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const std::string &name, NoiseParams *value_out)
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{
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return m_map_settings->getNoiseParams(name, *value_out) ||
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m_user_settings->getNoiseParams(name, *value_out);
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}
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bool MapSettingsManager::setMapSetting(
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const std::string &name, const std::string &value, bool override_meta)
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{
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if (mapgen_params)
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return false;
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if (override_meta)
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m_map_settings->set(name, value);
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else
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m_map_settings->setDefault(name, value);
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return true;
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}
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bool MapSettingsManager::setMapSettingNoiseParams(
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const std::string &name, const NoiseParams *value, bool override_meta)
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{
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if (mapgen_params)
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return false;
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m_map_settings->setNoiseParams(name, *value, !override_meta);
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return true;
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}
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bool MapSettingsManager::loadMapMeta()
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{
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std::ifstream is(m_map_meta_path.c_str(), std::ios_base::binary);
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if (!is.good()) {
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errorstream << "loadMapMeta: could not open "
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<< m_map_meta_path << std::endl;
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return false;
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}
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if (!m_map_settings->parseConfigLines(is, "[end_of_params]")) {
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errorstream << "loadMapMeta: [end_of_params] not found!" << std::endl;
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return false;
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}
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return true;
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}
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bool MapSettingsManager::saveMapMeta()
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{
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// If mapgen params haven't been created yet; abort
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if (!mapgen_params)
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return false;
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if (!fs::CreateAllDirs(fs::RemoveLastPathComponent(m_map_meta_path))) {
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errorstream << "saveMapMeta: could not create dirs to "
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<< m_map_meta_path;
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return false;
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}
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std::ostringstream oss(std::ios_base::binary);
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Settings conf;
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mapgen_params->MapgenParams::writeParams(&conf);
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mapgen_params->writeParams(&conf);
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conf.writeLines(oss);
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// NOTE: If there are ever types of map settings other than
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// those relating to map generation, save them here
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oss << "[end_of_params]\n";
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if (!fs::safeWriteToFile(m_map_meta_path, oss.str())) {
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errorstream << "saveMapMeta: could not write "
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<< m_map_meta_path << std::endl;
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return false;
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}
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return true;
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}
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MapgenParams *MapSettingsManager::makeMapgenParams()
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{
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if (mapgen_params)
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return mapgen_params;
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assert(m_user_settings != NULL);
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assert(m_map_settings != NULL);
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// At this point, we have (in order of precedence):
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// 1). m_mapgen_settings->m_settings containing map_meta.txt settings or
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// explicit overrides from scripts
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// 2). m_mapgen_settings->m_defaults containing script-set mgparams without
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// overrides
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// 3). g_settings->m_settings containing all user-specified config file
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// settings
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// 4). g_settings->m_defaults containing any low-priority settings from
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// scripts, e.g. mods using Lua as an enhanced config file)
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// Now, get the mapgen type so we can create the appropriate MapgenParams
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std::string mg_name;
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MapgenType mgtype = getMapSetting("mg_name", &mg_name) ?
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Mapgen::getMapgenType(mg_name) : MAPGEN_DEFAULT;
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if (mgtype == MAPGEN_INVALID) {
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errorstream << "EmergeManager: mapgen '" << mg_name <<
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"' not valid; falling back to " <<
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Mapgen::getMapgenName(MAPGEN_DEFAULT) << std::endl;
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mgtype = MAPGEN_DEFAULT;
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}
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// Create our MapgenParams
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MapgenParams *params = Mapgen::createMapgenParams(mgtype);
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if (params == NULL)
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return NULL;
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params->mgtype = mgtype;
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// Load the rest of the mapgen params from our active settings
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params->MapgenParams::readParams(m_user_settings);
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params->MapgenParams::readParams(m_map_settings);
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params->readParams(m_user_settings);
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params->readParams(m_map_settings);
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// Hold onto our params
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mapgen_params = params;
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return params;
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}
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