neon.common.resources.loaders.ModuleLoader.java Source code

Introduction

Here is the source code for neon.common.resources.loaders.ModuleLoader.java

Source

/*
 *   Neon, a roguelike engine.
 *   Copyright (C) 2017-2018 - Maarten Driesen
 * 
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package neon.common.resources.loaders;

import java.io.IOException;
import java.util.Set;
import java.util.stream.Collectors;

import org.jdom2.Document;
import org.jdom2.Element;

import com.google.common.io.Files;

import neon.common.files.NeonFileSystem;
import neon.common.files.XMLTranslator;
import neon.common.resources.RModule;
import neon.common.resources.Resource;

/**
 * Responsible for loading and saving module resources.
 * 
 * @author mdriesen
 *
 */
public final class ModuleLoader implements ResourceLoader {
    private final XMLTranslator translator = new XMLTranslator();
    private final NeonFileSystem files;

    public ModuleLoader(NeonFileSystem files) {
        this.files = files;
    }

    @Override
    public RModule load(String id) throws IOException {
        Element root = files.loadFile(translator, id + ".xml").getRootElement();
        String title = root.getChildText("title");
        String subtitle = root.getChildText("subtitle");
        String map = root.getChild("start").getAttributeValue("map");
        String intro = root.getChildren("intro").isEmpty() ? "" : root.getChildText("intro");
        Element start = root.getChild("start");
        int x = Integer.parseInt(start.getAttributeValue("x"));
        int y = Integer.parseInt(start.getAttributeValue("y"));
        int money = Integer.parseInt(start.getAttributeValue("money"));

        RModule.Builder builder = new RModule.Builder(id).setTitle(title).setSubtitle(subtitle).setIntro(intro);
        builder.setStartMap(map).setStartMoney(money).setStartPosition(x, y);

        for (Element species : root.getChild("playable").getChildren()) {
            builder.addPlayableSpecies(species.getText());
        }

        for (Element parent : root.getChild("parents").getChildren()) {
            builder.addParentModule(parent.getText());
        }

        for (Element item : start.getChildren("item")) {
            builder.addStartItem(item.getAttributeValue("id"));
        }

        for (Element item : start.getChildren("spell")) {
            builder.addStartSpell(item.getAttributeValue("id"));
        }

        return builder.build();
    }

    @Override
    public void save(Resource resource) throws IOException {
        RModule module = RModule.class.cast(resource);

        Element root = new Element("module");
        root.setAttribute("id", module.id);
        Element title = new Element("title");
        title.setText(module.title);
        root.addContent(title);

        Element start = new Element("start");
        start.setAttribute("map", module.map);
        start.setAttribute("x", Integer.toString(module.x));
        start.setAttribute("y", Integer.toString(module.y));
        root.addContent(start);

        if (!module.intro.isEmpty()) {
            Element intro = new Element("intro");
            intro.setText(module.intro);
            root.addContent("intro");
        }

        Element playable = new Element("playable");
        root.addContent(playable);
        for (String species : module.getPlayableSpecies()) {
            Element id = new Element("id");
            id.setText(species);
            playable.addContent(id);
        }

        Element parents = new Element("parents");
        root.addContent(parents);
        for (String parent : module.getParentModules()) {
            Element id = new Element("id");
            id.setText(parent);
            parents.addContent(id);
        }

        files.saveFile(new Document(root), translator, resource.id + ".xml");
    }

    @Override
    public Set<String> listResources() {
        return files.listFiles().parallelStream().map(Files::getNameWithoutExtension).collect(Collectors.toSet());
    }

    @Override
    public void removeResource(String id) throws IOException {
        throw new UnsupportedOperationException("Module removal not supported.");
    }

    @Override
    public String getNamespace() {
        return "global";
    }
}