neon.resources.quest.Topic.java Source code

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Here is the source code for neon.resources.quest.Topic.java

Source

/*
 *   Neon, a roguelike engine.
 *   Copyright (C) 2012-2013 - 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.resources.quest;

import org.jdom2.Element;

/**
 * A single topic in a conversation branch.
 * 
 * @author mdriesen
 */
public class Topic {
    /** The resource ID of the quest this topic belongs to. */
    public final String questID;
    public final String conversationID;
    public final String id; // unieke id string

    public String phrase; // hetgeen de player zegt
    public String condition; // script voorwaarden
    public String answer; // antwoord van NPC
    public String action; // script om achteraf uit te voeren

    /**
     * Initializes a topic from a JDOM {@code Element}.
     * 
     * @param topic
     */
    public Topic(String questID, String conversationID, Element topic) {
        this.questID = questID;
        this.conversationID = conversationID;

        // id en phrase moeten altijd bestaan
        id = topic.getAttributeValue("id");
        phrase = topic.getChildText("phrase");

        if (topic.getChild("pre") != null) {
            condition = topic.getChildText("pre");
        } else {
            condition = "true";
        }
        if (topic.getChild("answer") != null) {
            answer = topic.getChildText("answer");
        }
        if (topic.getChild("action") != null) {
            action = topic.getChildText("action");
        }
    }

    /**
     * Initializes a new topic.
     * 
     * @param questID   the resource ID of the quest this topic belongs to
     * @param id      a unique ID for this topic
     * @param pre      script preconditions
     * @param phrase   the phrase the player says
     * @param answer   the NPC's response
     * @param action   script that is executed after the answer
     */
    public Topic(String questID, String conversationID, String id, String pre, String phrase, String answer,
            String action) {
        this.questID = questID;
        this.conversationID = conversationID;
        this.id = id;
        this.phrase = phrase;
        this.condition = pre;
        this.answer = answer;
        this.action = action;
    }

    /**
     * @return   a JDOM {@code Element} describing this topic
     */
    public Element toElement() {
        Element topic = new Element("topic");
        topic.setAttribute("id", id);
        if (condition != null) {
            Element pre = new Element("pre");
            pre.setText(condition);
            topic.addContent(pre);
        }
        if (answer != null) {
            Element ae = new Element("answer");
            ae.setText(answer);
            topic.addContent(ae);
        }
        if (action != null) {
            Element ae = new Element("action");
            ae.setText(action);
            topic.addContent(ae);
        }
        return topic;
    }
}