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

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

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/*
 *   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.HashSet;
import java.util.Set;
import java.util.stream.Collectors;

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

import com.google.common.io.Files;

import javafx.scene.paint.Color;
import neon.common.files.NeonFileSystem;
import neon.common.files.XMLTranslator;
import neon.common.resources.RTerrain;
import neon.common.resources.RTerrain.Modifier;
import neon.common.resources.Resource;
import neon.util.GraphicsUtils;

/**
 * This resource loader takes care of loading/saving terrain resources 
 * from/to disk. 
 * 
 * @author mdriesen
 *
 */
public final class TerrainLoader implements ResourceLoader {
    private static final String namespace = "terrain";

    private final XMLTranslator translator = new XMLTranslator();
    private final NeonFileSystem files;

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

    @Override
    public RTerrain load(String id) throws IOException {
        Element root = files.loadFile(translator, namespace, id + ".xml").getRootElement();
        char glyph = root.getChild("graphics").getAttributeValue("text").charAt(0);
        Color color = Color.web(root.getChild("graphics").getAttributeValue("color"));
        String name = root.getAttributeValue("name");

        HashSet<Modifier> modifiers = new HashSet<>();
        for (Element modifier : root.getChildren("modifier")) {
            modifiers.add(Modifier.valueOf(modifier.getText().toUpperCase()));
        }

        return new RTerrain(id, name, glyph, color, modifiers);
    }

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

        Element root = new Element("terrain");
        root.setAttribute("id", terrain.id);
        root.setAttribute("name", terrain.name);

        Element graphics = new Element("graphics");
        graphics.setAttribute("text", Character.toString(terrain.glyph));
        graphics.setAttribute("color", GraphicsUtils.getColorString(terrain.color));
        root.addContent(graphics);

        for (Modifier modifier : terrain.getModifiers()) {
            Element mod = new Element("modifier");
            mod.setText(modifier.toString());
            root.addContent(mod);
        }

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

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

    @Override
    public void removeResource(String id) throws IOException {
        files.deleteFile(namespace, id + ".xml");
    }

    @Override
    public String getNamespace() {
        return namespace;
    }
}