private void rangeFunction(Node lookAt)
{
if (lookAt.isWalkable())
{
// adds node to range pairs if not present already.
if (!nodesInRangeSet.Contains(lookAt))
{
nodesInRangeSet.Add(lookAt);
nodesInRange.Add(lookAt);
}
bool frendType = uRef.isEnemy();
// targets!
if (lookAt.Occupied && lookAt.Occupier.isEnemy() != frendType)
{
currentTargets.Add(new Node.NodePointer(shootingFrom, lookAt, Node.range(shootingFrom, lookAt)));
}
if (reverseNodesInRangeSetCost.ContainsKey(lookAt))
{
if (reverseNodesInRangeSetCost[lookAt] > shootingFrom.realCost)
reverseNodesInRangeSetCost[lookAt] = (int) shootingFrom.realCost;
}
else
reverseNodesInRangeSetCost.Add(lookAt, (int) (shootingFrom.realCost));
}
}
/// <summary>
/// Unlike closestMostValidNode; BFS does up to a full BFS
/// to find the closest unocupied & walkable node to a given location.
/// Only use when not wanting to take into account edge costs.
/// If no nodes found that are valid, returns the start node.
/// Uses Nodes directly instead of converting from Vector2.
/// </summary>
/// <param name="startLoc">The location to start looking from.</param>
/// <returns>The first unocupied/valid walkable tile found. If no nodes found that are valid, returns the start node.</returns>
private Node BFSUnoccupiedAndValid(Node startNode)
{
if (!startNode.Occupied && startNode.isWalkable())
return startNode;
initializePathfinding(true);
Queue<Node> listOfNodes = new Queue<Node>();
listOfNodes.Enqueue(startNode);
// Can't use visited, as we're already using that hack in initializePathfinding...
startNode.realCost = -1;
while (listOfNodes.Count > 0)
{
Node found = listOfNodes.Dequeue();
if (!found.Occupied && found.isWalkable())
return found;
foreach (Edge e in found.getEdges())
{
Node candidate = e.getNode();
if (candidate.realCost > 0)
listOfNodes.Enqueue(candidate);
// Can't use visited, as we're already using that hack in initializePathfinding...
candidate.realCost = -1;
}
}
return startNode;
}