GridAstarState.init constructor

GridAstarState.init(
  1. GridPoint start,
  2. GridPoint target,
  3. List<List<GridNode>> grid,
  4. bool allowDiagonals,
)

Implementation

GridAstarState.init(
  GridPoint start,
  GridPoint target,
  List<List<GridNode>> grid,
  bool allowDiagonals,
) : super.init(start, target, grid, allowDiagonals) {
  heuristic = allowDiagonals ? chebyshev : taxicab;
  gCost = HashMap.from({start: 0});
  fCost = HashMap.from({start: heuristic(start, target)});
  open = PriorityQueue<GridPoint>((a, b) => fCost[a]!.compareTo(fCost[b]!));
  open.add(start);
  start.set(grid, GridNode.open);
}