Rogue: Savage Rats, a retro-themed dungeon crawler
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rogue-savage-rats/src/mightypork/rogue/world/pathfinding/Heuristic.java

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package mightypork.rogue.world.pathfinding;
import mightypork.rogue.world.Coord;
public abstract class Heuristic {
/**
* Get tile cost (estimate of how many tiles remain to the target)
*
* @param pos current pos
* @param target target pos
* @return estimated number of tiles
*/
public abstract double getCost(Coord pos, Coord target);
}