BehaviorTreeExample.java

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package examples.sequences;
 
import ca.uqac.lif.synthia.random.RandomFloat;
import ca.uqac.lif.synthia.sequence.BehaviorTree;
import ca.uqac.lif.synthia.sequence.BehaviorTree.Selector;
import ca.uqac.lif.synthia.sequence.BehaviorTree.Leaf;
import ca.uqac.lif.synthia.sequence.BehaviorTree.Sequence;
 
/**
 * Generates a random sequence of strings whose content is defined by
 * a behavior tree. In this example, the behavior tree corresponds to this
 * picture:
 * <p>
 * <img src="./doc-files/Tree.png" alt="Tree">
 * @author Sylvain Hallé
 * @ingroup Examples
 */
public class BehaviorTreeExample
{
    @SuppressWarnings("unchecked")
    public static void main(String[] args)
    {
        RandomFloat picker = new RandomFloat();
        picker.setSeed(10);
        BehaviorTree<String> tree = new Sequence<String>(
                new Selector<String>(picker)
                    .add(new Leaf<String>("A"), 0.5)
                    .add(new Sequence<String>(new Leaf<String>("B"), new Leaf<String>("C")), 0.5),
                new Selector<String>(picker)
                    .add(new Leaf<String>("D"), 0.25)
                    .add(new Sequence<String>(new Leaf<String>("E"), new Leaf<String>("F")), 0.75)
                );
        String s = null;
        do
        {
            s = tree.pick();
            if (s == null)
            {
                break;
            }
            System.out.println(s);
        } while (s != null);
    }
}