private void OnPathRequest(Event <PathRequestEventPayload> eventArg)
{
if (searchSpace == null)
{
return;
}
PathRequestEventPayload request = eventArg.EventData;
if (request.gameObject != searchSpace.gameObject)
{
return; // request not for us
}
MovingEntity movingEntity = request.gameObject.GetComponent <MovingEntity>();
Vector2 requestorPosition2D = (movingEntity != null && movingEntity.enabled) ? movingEntity.Position2D : request.gameObject.transform.position.To2D();
int source = searchSpace.GetClosestNodeToPosition(requestorPosition2D);
if (source != Node.INVALID_NODE_INDEX)
{
// Requestor may be inside or too close to obstruction
// so let's find the closest node to warp to
source = searchSpace.GetClosestNodeToPosition(requestorPosition2D, true);
if (source == SearchSpace.NO_CLOSEST_NODE_FOUND)
{
return; // screwed
}
}
int target = searchSpace.GetClosestNodeToPosition(request.destination);
if (target == SearchSpace.NO_CLOSEST_NODE_FOUND)
{
////TODO: should we instead move the target to closest valid node??
return;
}
var currentSearch = new AStarSearch(searchSpace.Graph, source, target);
var path = new Path(
this,
searchSpace.gameObject,
requestorPosition2D,
request.destination,
currentSearch.GetPathToTarget(),
searchSpace.Graph);
PathReadyEventPayload result =
new PathReadyEventPayload(request.gameObject, path);
EventManager.Instance.Enqueue <PathReadyEventPayload>(Events.PathReady, result);
}