package org.newdawn.slick.util.pathfinding.heuristics;
import org.newdawn.slick.util.pathfinding.AStarHeuristic;
import org.newdawn.slick.util.pathfinding.Mover;
import org.newdawn.slick.util.pathfinding.TileBasedMap;
/**
* A heuristic that uses the tile that is closest to the target
* as the next best tile.
*
* @author Kevin Glass
*/
public class ClosestHeuristic implements AStarHeuristic {
/**
* @see AStarHeuristic#getCost(TileBasedMap, Mover, int, int, int, int)
*/
public float getCost(TileBasedMap map, Mover mover, int x, int y, int tx, int ty) {
float dx = tx - x;
float dy = ty - y;
float result = (float) (Math.sqrt((dx*dx)+(dy*dy)));
return result;
}
}