package aima.core.environment.map;
import aima.core.util.datastructure.Point2D;
/**
* @author Ruediger Lunde
*/
public class StraightLineDistanceHeuristicFunction extends
AdaptableHeuristicFunction {
public StraightLineDistanceHeuristicFunction(Object goal, Map map) {
this.goal = goal;
this.map = map;
}
public double h(Object state) {
double result = 0.0;
Point2D pt1 = map.getPosition((String) state);
Point2D pt2 = map.getPosition((String) goal);
if (pt1 != null && pt2 != null) {
result = pt1.distance(pt2);
}
return result;
}
}