Altered king heuristic to follow Samuel's paper, 2 kings equals 3 normal

john · Apr 30, 2016 · 667711b · 667711b
1 parent 8daef5b
commit 667711b
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/model/Board.java b/src/model/Board.java
@@ -387,10 +387,10 @@ public boolean isPromotionLocation(Location location) {
 				location.row == BOARD_SIZE - 1 );
 	}
 
-	public int getHeuristic(Color color) {
+	public double getHeuristic(Color color) {
 		/* Kings are weighted more, so we count for them twice */
-		int blackHeuristic = blackPieces + blackKings;
-		int whiteHeuristic = whitePieces + whiteKings;
+		double blackHeuristic = blackPieces + blackKings * 1.5;
+		double whiteHeuristic = whitePieces + whiteKings * 1.5;
 		return - (color == Color.BLACK ? 
 				(blackHeuristic - whiteHeuristic) : 
 					(whiteHeuristic - blackHeuristic));