/// <summary>
/// Initializes a new instance of the <see cref="AStarPathFinder"/> class.
/// </summary>
/// <param name="nodeFactory">A reference to the node factory in use.</param>
/// <param name="map">A refernce to the map isntance.</param>
/// <param name="pathfinderOptions">The options for this pathfinder.</param>
public AStarPathFinder(INodeFactory nodeFactory, IMap map, IOptions <AStarPathFinderOptions> pathfinderOptions)
{
nodeFactory.ThrowIfNull(nameof(nodeFactory));
map.ThrowIfNull(nameof(map));
pathfinderOptions?.Value.ThrowIfNull(nameof(pathfinderOptions));
this.NodeFactory = nodeFactory;
this.Map = map;
this.Options = pathfinderOptions.Value;
}
/// <summary>
/// Initializes a new instance of the <see cref="AStar"/> class.
/// </summary>
/// <param name="nodeFactory">A reference to the node factory in use.</param>
/// <param name="start">The starting node for the AStar algorithm.</param>
/// <param name="goal">The goal node for the AStar algorithm.</param>
/// <param name="maxSearchSteps">Optional. The maximum number of Step operations to perform on the search.</param>
public AStar(INodeFactory nodeFactory, INode start, INode goal, int maxSearchSteps = 100)
{
nodeFactory.ThrowIfNull(nameof(nodeFactory));
start.ThrowIfNull(nameof(start));
goal.ThrowIfNull(nameof(goal));
this.nextToVisit = new SortedList <int, INode>(new DuplicateIntegerComparer());
this.nodeFactory = nodeFactory;
this.goal = goal;
this.maxSteps = maxSearchSteps;
this.currentStepCount = 0;
this.CurrentNode = start;
this.CurrentNode.ShouldBeVisited = true;
this.nextToVisit.Add(this.CurrentNode);
}
