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Author: Regenuluz (posted 2013-03-17 07:52:44, viewed 215 times)

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package org.anized.main;

import java.util.ArrayList;
import java.util.List;

public class Node implements Comparable<Node> {

   private final List<Node> neighbors = new ArrayList<>();

   public final int x;
   public final int y;
   public final String name;

   public int f = Integer.MAX_VALUE; // Total cost
   public int g; // Cost to goal
   public int searchCount; // Search count
   public Node came_from; // The next node in the path

   public Node(int x, int y, String name) {
      this.x = x;
      this.y = y;
      this.name = name;
   }

   /**
    * Add a neighbor to the node
    * 
    * @param node
    *            The neighboring node
    */
   public void addNeighbor(Node node) {
      this.neighbors.add(node);
   }

   /**
    * Get all neighbors of the node
    * 
    * @return A list of all neighbors
    */
   public List<Node> getNeighbors() {
      return this.neighbors;
   }

   /**
    * The heuristic between the node and a goal node, squared.
    * 
    * @param goal
    * @return The distance squared
    */
   public int heuristic(Node goal) {
      return Math.abs(this.x - goal.x) + Math.abs(this.y - goal.y);
//      return (this.x - goal.x) * (this.x - goal.x) + (this.y - goal.y) * (this.y - goal.y);
   }

   @Override
   public int compareTo(Node node) {
      return this.f - node.f;
   }

   @Override
   public String toString() {
      return this.name;
   }

   @Override
   public boolean equals(Object o) {
      if(o instanceof Node) {
         Node node = (Node) o;

         if(this.x == node.x && this.y == node.y && this.name.equals(node.name)) {
            return true;
         }
      }

      return false;
   }
}





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