//Finds adjacent active nodes to the node passed in
public IEnumerable <Node> GetActiveNeighbors(Node current)
{
if (Diagonal.Checked)
{
return(ListOfNodes.Where(node =>
((node.X == current.X + 1 ||
node.X == current.X ||
node.X == current.X - 1) &&
(node.Y == current.Y + 1 ||
node.Y == current.Y ||
node.Y == current.Y - 1)) &&
node.State != NodeState.Inactive &&
node.State != NodeState.Wall &&
node != current));
}
else
{
return(ListOfNodes.Where(node =>
(((node.X == current.X + 1 || node.X == current.X - 1) && node.Y == current.Y) ||
((node.Y == current.Y + 1 || node.Y == current.Y - 1) && node.X == current.X)) &&
node.State != NodeState.Inactive &&
node.State != NodeState.Wall &&
node != current));
}
}
public bool ResetGrid()
{
//Set points that aren't start or end to be none
foreach (var node in ListOfNodes
.Where(n => n != StartNode && n != EndNode))
{
node.State = NodeState.None;
}
//Check for start point and end point
return(StartNode != null && EndNode != null);
}
public IEnumerable <Node> GetAllNeighbors(Node current)
{
return(ListOfNodes.Where(node =>
((node.X == current.X + 1 ||
node.X == current.X ||
node.X == current.X - 1) &&
(node.Y == current.Y + 1 ||
node.Y == current.Y ||
node.Y == current.Y - 1)) &&
node.State != NodeState.Wall &&
node != current));
}
public void SelectStart(int x, int y)
{
StartNode = ListOfNodes.FirstOrDefault(node => node.X == x && node.Y == y);
}
public void SelectEnd(int x, int y)
{
EndNode = ListOfNodes.FirstOrDefault(node => node.X == x && node.Y == y);
}
//Returns all active nodes
public IEnumerable <Node> GetAllActive()
{
return(ListOfNodes.Where(node => node.State == NodeState.Active));
}
