AIMA.Core.Environment.EightPuzzle.ManhattanHeuristicFunction.h C# (CSharp) Method

        public double h(Object state)
        {
            EightPuzzleBoard board = (EightPuzzleBoard)state;
            int retVal = 0;
            for (int i = 1; i < 9; i++)
            {
                XYLocation loc = board.getLocationOf(i);
                retVal += evaluateManhattanDistanceOf(i, loc);
            }
            return retVal;

        }