Examples with WorldDumper org.terasology.engine.persistence.WorldDumper used on opensource projects

Example 1 with WorldDumper

use of org.terasology.engine.persistence.WorldDumper in project Terasology by MovingBlocks.

the class CoreCommands method dumpEntities.

/**
 * Writes out information on entities having specific components to a text file for debugging
 * If no component names provided - writes out information on all entities
 *
 * @param componentNames string contains one or several component names, if more then one name
 *                       provided - they must be braced with double quotes and all names separated
 *                       by space
 * @return String containing information about number of entities saved
 * @throws IOException thrown when error with saving file occures
 */
@Command(shortDescription = "Writes out information on all entities to a JSON file for debugging", helpText = "Writes entity information out into a file named \"<timestamp>-entityDump.json\"." + " Supports list of component names, which will be used to only save entities that contains" + " one or more of those components. Names should be separated by spaces.")
public String dumpEntities(@CommandParam(value = "componentNames", required = false) String... componentNames) throws IOException {
    int savedEntityCount;
    EngineEntityManager engineEntityManager = (EngineEntityManager) entityManager;
    PrefabSerializer prefabSerializer = new PrefabSerializer(engineEntityManager.getComponentLibrary(), engineEntityManager.getTypeSerializerLibrary());
    WorldDumper worldDumper = new WorldDumper(engineEntityManager, prefabSerializer);
    Path outFile = PathManager.getInstance().getHomePath().resolve(Instant.now() + "-entityDump.json");
    if (componentNames.length == 0) {
        savedEntityCount = worldDumper.save(outFile);
    } else {
        List<Class<? extends Component>> filterComponents = Arrays.stream(componentNames).map(// Trim off whitespace
        String::trim).filter(// Remove empty strings
        o -> !o.isEmpty()).map(// All component class names end with "component"
        o -> o.toLowerCase().endsWith("component") ? o : o + "component").map(o -> Streams.stream(moduleManager.getEnvironment().getSubtypesOf(Component.class)).filter(e -> e.getSimpleName().equalsIgnoreCase(o)).findFirst()).filter(Optional::isPresent).map(Optional::get).collect(Collectors.toList());
        if (!filterComponents.isEmpty()) {
            savedEntityCount = worldDumper.save(outFile, filterComponents);
        } else {
            return "Could not find components matching given names";
        }
    }
    return "Number of entities saved: " + savedEntityCount;
}