/// <summary>Populates and returns a new landmark at the specified board coordinates.</summary>
/// <param name="hexCoords"><see cref="HexCoords"/> for the landmark to be created.</param>
/// <param name="mapSizeHexes">Hex dimensions of the IBoard{IHex} on which the landmark is to be created.</param>
/// <param name="queueFactory">Factory that creates empty instances of <c>IPriorityQueue</c>.</param>
/// <param name="tryDirectedCosts">TODO</param>
private DirectedLandmark(HexCoords hexCoords, HexSize mapSizeHexes,
Func <IPriorityQueue <int, HexCoords> > queueFactory,
TryDirectedCost tryDirectedCosts
)
{
// _hex = hex;
_backingStore = new LandmarkPopulatorFunctor(hexCoords, mapSizeHexes, queueFactory, tryDirectedCosts).Fill();
}
public LandmarkPopulator(
HexCoords hex,
HexSize mapSizeHexes,
Func <IPriorityQueue <int, HexCoords> > queueFactory,
TryDirectedCost tryDirectedStepCost
) : base(hex, mapSizeHexes, queueFactory, tryDirectedStepCost)
{
}
public static DirectedLandmark New(HexCoords hexCoords, HexSize mapSizeHexes,
Func <IPriorityQueue <int, HexCoords> > queueFactory,
TryDirectedCost tryDirectedCosts
)
{
return(Extensions.InitializeDisposable(() =>
new DirectedLandmark(hexCoords, mapSizeHexes, queueFactory, tryDirectedCosts)));
}
private void Action(
IPriorityQueue <int, HexCoords> queue,
BoardStorage <short?> store,
TryDirectedCost tryDirectedStepCost,
HexCoords here, int key, Hexside hexside
)
{
var neighbour = here.GetNeighbour(hexside);
tryDirectedStepCost(here, hexside).IfHasValueDo(stepCost => {
store[neighbour].ElseDo(() => Enqueue((short)(key + stepCost), neighbour, store));
});
}
public LandmarkPopulatorFunctor(
HexCoords hexCoords,
HexSize mapSizeHexes,
Func <IPriorityQueue <int, HexCoords> > queueFactory,
TryDirectedCost tryDirectedStepCost
)
{
Tracing.FindPathDetail.Trace("Find distances from {0}", hexCoords);
_queue = queueFactory();
_store = BlockedBoardStorage.New32x32(mapSizeHexes, c => default(short?));
_tryDirectedStepCost = tryDirectedStepCost;
Enqueue(0, hexCoords, _store);
}
