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;
}
bool loadGameConfAndInitWorld(const std::string &path, const SubgameSpec &gamespec)
{
// Override defaults with those provided by the game.
// We clear and reload the defaults because the defaults
// might have been overridden by other subgame config
// files that were loaded before.
g_settings->clearDefaults();
set_default_settings(g_settings);
Settings game_defaults;
getGameMinetestConfig(gamespec.path, game_defaults);
override_default_settings(g_settings, &game_defaults);
infostream << "Initializing world at " << path << std::endl;
fs::CreateAllDirs(path);
// Create world.mt if does not already exist
std::string worldmt_path = path + DIR_DELIM "world.mt";
if (!fs::PathExists(worldmt_path)) {
Settings conf;
conf.set("gameid", gamespec.id);
conf.set("backend", "sqlite3");
conf.set("player_backend", "sqlite3");
conf.setBool("creative_mode", g_settings->getBool("creative_mode"));
conf.setBool("enable_damage", g_settings->getBool("enable_damage"));
if (!conf.updateConfigFile(worldmt_path.c_str()))
return false;
}
// Create map_meta.txt if does not already exist
std::string map_meta_path = path + DIR_DELIM + "map_meta.txt";
if (!fs::PathExists(map_meta_path)) {
verbosestream << "Creating map_meta.txt (" << map_meta_path << ")"
<< std::endl;
fs::CreateAllDirs(path);
std::ostringstream oss(std::ios_base::binary);
Settings conf;
MapgenParams params;
params.readParams(g_settings);
params.writeParams(&conf);
conf.writeLines(oss);
oss << "[end_of_params]\n";
fs::safeWriteToFile(map_meta_path, oss.str());
}
return true;
}
MapgenParams *EmergeManager::getParamsFromSettings(Settings *settings) {
std::string mg_name = settings->get("mg_name");
MapgenParams *mgparams = createMapgenParams(mg_name);
mgparams->mg_name = mg_name;
mgparams->seed = settings->getU64(settings == g_settings ? "fixed_map_seed" : "seed");
mgparams->water_level = settings->getS16("water_level");
mgparams->chunksize = settings->getS16("chunksize");
mgparams->flags = settings->getFlagStr("mg_flags", flagdesc_mapgen);
if (!mgparams->readParams(settings)) {
delete mgparams;
return NULL;
}
return mgparams;
}
MapgenParams *EmergeManager::setMapgenType(MapgenParams *mgparams,
std::string newname) {
MapgenParams *newparams = createMapgenParams(newname);
if (!newparams) {
errorstream << "EmergeManager: Mapgen override failed" << std::endl;
return NULL;
}
newparams->mg_name = newname;
newparams->seed = mgparams->seed;
newparams->water_level = mgparams->water_level;
newparams->chunksize = mgparams->chunksize;
newparams->flags = mgparams->flags;
if (!newparams->readParams(g_settings)) {
errorstream << "EmergeManager: Mapgen override failed" << std::endl;
delete newparams;
return NULL;
}
delete mgparams;
return newparams;
}