Path.java

package vooga.towerdefense.model.AStar;

import java.awt.Point;
import java.util.ArrayList;

public class Path {
        // The waypoints in the path (list of coordiantes making up the path)
        private ArrayList<Node> waypoints = new ArrayList<Node>();
       
        public Path() {
        }
       
        public int getLength() {
                return waypoints.size();
        }

        public Node getWayPointNode(int index) {
                return waypoints.get(index);
        }
       
        public Point getWayPoint(int index) {
                return new Point(waypoints.get(index).getX(), waypoints.get(index).getY());
        }

        /**
         * Get the x-coordinate for the waypoiny at the given index.
         *
         * @param index The index of the waypoint to get the x-coordinate of.
         * @return The x coordinate at the waypoint.
         */
        public int getX(int index) {
                return getWayPointNode(index).getX();
        }

        /**
         * Get the y-coordinate for the waypoint at the given index.
         *
         * @param index The index of the waypoint to get the y-coordinate of.
         * @return The y coordinate at the waypoint.
         */
        public int getY(int index) {
                return getWayPointNode(index).getY();
        }

        /**
         * Append a waypoint to the path.  
         *
         * @param x The x coordinate of the waypoint.
         * @param y The y coordinate of the waypoint.
         */
        public void appendWayPoint(Node n) {
                waypoints.add(n);
        }

        /**
         * Add a waypoint to the beginning of the path.  
         *
         * @param x The x coordinate of the waypoint.
         * @param y The y coordinate of the waypoint.
         */
        public void prependWayPoint(Node n) {
                waypoints.add(0, n);
        }

        /**
         * Check if this path contains the WayPoint
         *
         * @param x The x coordinate of the waypoint.
         * @param y The y coordinate of the waypoint.
         * @return True if the path contains the waypoint.
         */
        public boolean contains(int x, int y) {
                for(Node node : waypoints) {
                        if (node.getX() == x && node.getY() == y)
                                return true;
                }
                return false;
        }

}