private void MoveSpider(Spider spider)
{
if (spider.Path == null)
{
spider.Dead = true;
}
else if (spider.Path.Count > 0)
{
var next = spider.Path.Pop();
Cell cell;
if (!dungeon.TryGetCell(next, out cell))
{
cell = new Cell(next.Row, next.Column);
cell.Type = CellType.Floor;
dungeon[next] = cell;
}
}
else
{
spider.Dead = true;
}
}
private IEnumerable <Node> GetNeighbors(Node node, Index goal)
{
int[][] dirs = new int[4][]
{
new int[] { 1, 0 },
new int[] { -1, 0 },
new int[] { 0, 1 },
new int[] { 0, -1 },
};
foreach (var dir in dirs)
{
var index = new Index(node.Row + dir[0], node.Column + dir[1]);
Node neighbor;
if (environment.TryGetValue(index, out neighbor))
{
Cell cell;
if (index.Equals(goal) || !dungeon.TryGetCell(index, out cell) || cell.Type == CellType.Floor)
{
yield return(neighbor);
}
}
}
}
