/// <summary>.</summary>
/// <param name="pathHalves"></param>
/// <param name="isForward"></param>
public AltPathfinder(IPathHalves <THex> pathHalves, bool isForward)
{
int exitCost(IHex hex, Hexside hexside) => hex.ExitCost(hexside);
int entryCost(IHex hex, Hexside hexside) => hex.EntryCost(hexside);
PathHalves = pathHalves;
Board = pathHalves.Board;
ClosedSet = pathHalves.ClosedSet;
Start = isForward ? pathHalves.Source : pathHalves.Target;
Goal = isForward ? pathHalves.Target : pathHalves.Source;
StepCost = isForward ? (StepCost)exitCost : entryCost;
Potential = isForward ? (Potential)((l, c) => l.DistanceFrom(c))
: ((l, c) => l.DistanceTo(c));
SetBestSoFar = isForward ? (SetBest)((s, p) => PathHalves.SetBestSoFar(p, s))
: ((s, p) => PathHalves.SetBestSoFar(s, p));
HexsideDirection = isForward ? (Func <Hexside, Hexside>)(hexside => hexside)
: (hexside => hexside.Reversed);
OpenSet = new Dictionary <HexCoords, IDirectedPath>();
Queue = HotPriorityQueue.New <IDirectedPath>(0, 256);
$"ALT {(isForward?"Fwd":"Rev")}".TraceFindPathDetailDirection(Goal.Coords - Start.Coords);
StartPath(Start);
}
/// <param name="pathHalves"></param>
/// <param name="isForward"></param>
public AltPathfinder(IPathHalves pathHalves, bool isForward)
{
IsForward = isForward;
ClosedSet = pathHalves.ClosedSet;
StartCoords = pathHalves.Start;
GoalCoords = pathHalves.Goal;
Landmarks = pathHalves.Board.Landmarks;
OpenSet = new Dictionary <HexCoords, IDirectedPath>();
Queue = HotPriorityQueue.New <IDirectedPath>(0, 256);
TryStepCost = IsForward ? (StepCost)pathHalves.Board.TryEntryCost : pathHalves.Board.TryExitCost;
PathHalves = pathHalves;
PathfinderExtensions.TraceFindPathDetailDirection(Direction, GoalCoords - StartCoords);
StartPath(IsForward ? StartCoords : GoalCoords);
}
/// <summary>TODO</summary>
internal static IPriorityQueue <int, TValue> NewHotPriorityQueue <TValue>(int initialSize)
// where TValue : class
{
return(HotPriorityQueue.New <TValue>(0, initialSize));
}
/// <summary>Returns a new <see cref="HotPriorityQueue"/> with size <paramref name="initialSize"/>.</summary> internal static IPriorityQueue <int, TValue> NewHotPriorityQueue <TValue>(int initialSize) => HotPriorityQueue.New <TValue>(0, initialSize);