Path.java

import java.util.ArrayList;

/**
 * Used by the state machine agent to store a sequence of steps in the state
 * machine environment.  This is primarily used to store the best known path
 * from the init state to the goal state.
 */

public class Path {
    //list of steps taken along the path
	private ArrayList<Character> path;

	//Debugging Variable
	private boolean debug = true;

	/**
	 * initializes a path with an array of character 
     *
	 * @param generated
	 */
	public Path (ArrayList<Character> generated) {
		path = new ArrayList<Character>();
		for (int i = 0; i < generated.size(); i++) {
			path.add(generated.get(i));
		}
	}

    /**
     * creates a copy of this object
     */
	public Path copy() {
		ArrayList<Character> createdCopy = new ArrayList<Character>();
		for (int i = 0; i < path.size(); i++) {
			createdCopy.add(path.get(i));
		}
		return new Path(createdCopy);
	}

	public int size() {
		return path.size();
	}

	public char get(int index) {
		return path.get(index);
	}

	public String toString() {
		String result = "";
		for (int i = 0; i < path.size(); i++) {
			result += path.get(i);
		}
		return result;
	}

	public void printpath() {
		if (debug) {
			System.out.println("path: " + toString());
		}
	}

	public void remove(int index) {
		path.remove(index);
	}

	public void add(int index, char toAdd) {
		path.add(index, toAdd);
	}
}