/// <summary>
/// Add a food source into the scout food source queue. Thread safe.
/// </summary>
/// <param name="foodSource"></param>
public void AddFoodSource(FoodSource foodSource)
{
//stuff this into a queue to inspire the scouts to check it.
lock (newFoodSourceQueueLock) {
newFoodSourceQueue.Enqueue(foodSource);
}
}
/// <summary>
/// Remove a food source from the food source list. Thread safe.
/// </summary>
/// <param name="foodSource"></param>
public void RemoveFoodSource(FoodSource foodSource)
{
lock (objFoodSource) {
foodSources.Remove(foodSource);
Bees.ForEach(x => x.RandomSolution = GetUniqueRandoms(Rand, 0, foodSources.Count));
}
}
/// <summary>
/// Performs the bee primary and neighbor fitness. (NOT Thread safe)
/// </summary>
/// <param name="primaryFoodSource">Primary food source.</param>
/// <param name="bee">Bee.</param>
/// <param name="foodSourceSelection">Food source selection.</param>
private void PerformBeePrimaryAndNeighborFitness(FoodSource primaryFoodSource,
Bee bee, List <FoodSource> foodSourceSelection)
{
var primaryFoodSourceCoordinate = primaryFoodSource.Location.GeoCoordinate;
double distanceLocation = double.MaxValue;
FoodSource neighbor = null;
foreach (var source in foodSources)
{
//Ignore if the current source is the same
if (source.ToString() == primaryFoodSource.ToString())
{
continue;
}
//Locate the nearest neighbor that is not abandoned.
if (source.IsAbandoned)
{
continue;
}
double distance = source.Location.GeoCoordinate.GetDistanceTo(primaryFoodSourceCoordinate);
if (distance < distanceLocation)
{
neighbor = source;
}
}
//Each employed bee goes to a food source in her memory and determines a neighbour source,
//then evaluates its nectar amount and dances in the hive
primaryFoodSource.FitnessValue = this.fitnessGetFunction(primaryFoodSource, bee);
if (primaryFoodSource.FitnessValue <= 0)
{
primaryFoodSource.IsAbandoned = true;
}
primaryFoodSource.TrialsCount++;
foodSourceSelection.Add(primaryFoodSource);
if (neighbor != null)
{
neighbor.FitnessValue = this.fitnessGetFunction(neighbor, bee);
if (neighbor.FitnessValue <= 0)
{
neighbor.IsAbandoned = true;
}
neighbor.TrialsCount++;
foodSourceSelection.Add(neighbor);
}
}
