using UnityEngine;
using System.Collections;

public class DefaultEvaluator : Evaluator {
	private NodePath path;

	public DefaultEvaluator(NodePath _path) {
		path = _path;
	}

	public Evaluation evaluate(TreeNode _current, int _pos){
		Pair<int, NodePath> pop = path.pop ();
		int head = pop.lefts ();

		if (path.size () == 1) {
			if (head == _pos) {
				return new DefaultEvaluation (Result.GOAL, null);
			}
		}

		DefaultEvaluator nextEvaluator;
		Result result;
		if (head == _pos) {
			result = Result.ACCEPT;
			nextEvaluator = new DefaultEvaluator (pop.rights ());
		} else {
			result = Result.CONTINUE;
			nextEvaluator = null;
		}

		return new DefaultEvaluation (result, nextEvaluator);

	}

}