private void StartPathFinder()
{
try
{
_stepsEstimate = Math.Abs(_stopPoint.Y - _startPoint.Y) + Math.Abs(_stopPoint.X - _startPoint.X);
ICellPathFinder pathFinder = _currentPathFinder;
pathFinder.OnCellViewedEvent += OnCellViewed;
_viewedCellsTable.Add(pathFinder, 0);
IList <Vector2Int> path =
pathFinder.GetPath(_cellMap, _startPoint, _stopPoint, NeighbourMode.SidesAndDiagonals);
if (path == null)
{
MessageBox.Show("Path not found!", "Path finder", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
else
{
DrawPath(path);
}
SetViewedCellsCount((int)_viewedCellsTable[pathFinder]);
_viewedCellsTable.Remove(pathFinder);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
Debug.WriteLine(ex.StackTrace);
throw;
}
SetUiEnabled(true);
}
private void InitHpaStar()
{
_pathFinder = new CellPathFinderFactory(CellPathFinderAlgorithms.HpaStarAlgorithm);
SetUiActive(false);
_backgroundTask = new Task(PreBuildGraphJob, TaskCreationOptions.LongRunning);
_backgroundTask.Start();
}
public CellPathFinderFactory(CellPathFinderAlgorithms algorithm)
{
switch (algorithm)
{
case CellPathFinderAlgorithms.LeeAlgorithm:
_instance = new LeeAlgorithm();
break;
case CellPathFinderAlgorithms.BestFirstSearchAlgorithm:
_instance = new BestFirstSearch();
break;
case CellPathFinderAlgorithms.AStarAlgorithm:
_instance = new AStarAlgorithm();
break;
case CellPathFinderAlgorithms.HpaStarAlgorithm:
_instance = new HpaStarAlgorithm();
break;
default:
throw new ArgumentOutOfRangeException(nameof(algorithm), algorithm, null);
}
}
private void AlgorithmSelectorBox_SelectedIndexChanged(object sender, EventArgs e)
{
_currentPathFinder = InstantiatePathFinder();
}
