/*
* Copyright 2014 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.logic.behavior.tree;
import org.terasology.module.sandbox.API;
import java.util.Iterator;
/**
* Evaluates the children one by one.<br>
* Starts next child, if previous child finishes with <b>FAILURE</b>.<br>
* <br>
* <b>SUCCESS</b>: as soon as a child finishes <b>SUCCESS</b>.<br>
* <b>FAILURE</b>: when all children finished with <b>FAILURE</b>.<br>
* <br>
* Auto generated javadoc - modify README.markdown instead!
*/
@API
public class SelectorNode extends CompositeNode {
@Override
public SelectorTask createTask() {
return new SelectorTask(this);
}
public static class SelectorTask extends CompositeTask {
private Iterator<Node> iterator;
private Node current;
public SelectorTask(SelectorNode node) {
super(node);
}
@Override
public void onInitialize() {
iterator = getNode().children().iterator();
if (iterator.hasNext()) {
current = iterator.next();
start(current);
}
}
@Override
public void handle(Status result) {
if (result == Status.SUCCESS) {
stop(Status.SUCCESS);
return;
}
if (iterator.hasNext()) {
current = iterator.next();
start(current);
} else {
stop(Status.FAILURE);
}
}
@Override
public Status update(float dt) {
return Status.RUNNING;
}
@Override
public SelectorNode getNode() {
return (SelectorNode) super.getNode();
}
}
}