/// <summary>
/// Register a new entrance / exit of this area.
/// </summary>
/// <param name="from">The from part of the connecting edge.</param>
/// <param name="to">The to part of the connecting edge.</param>
/// <param name="entry">Defines whether the connection is an entrance or an exit.</param>
/// <param name="barrier">Defines whether the connection is blocked as soon as the limit of requests is reached.</param>
/// <returns>The guard protecting the corresponding connection.</returns>
public QueueGuard RegisterGuard(Waypoint from, Waypoint to, bool entry, bool barrier)
{
QueueGuard guard = new QueueGuard(from, to, entry, barrier, this);
_guards.Add(guard);
from.RegisterGuard(guard);
return(guard);
}
/// <summary>
/// Registers a guard for a connection to another waypoint.
/// </summary>
/// <param name="guard">The guard monitoring the connection.</param>
internal void RegisterGuard(QueueGuard guard)
{
if (!_guards.ContainsKey(guard.To))
{
_guards[guard.To] = new List <QueueGuard>();
}
_guards[guard.To].Add(guard);
}
/// <summary>
/// Unregisters the guard from this waypoint.
/// </summary>
/// <param name="guard">The guard to unregister.</param>
internal void UnregisterGuard(QueueGuard guard)
{
if (_guards.ContainsKey(guard.To))
{
_guards[guard.To].Remove(guard);
if (_guards[guard.To].Count == 0)
{
_guards.Remove(guard.To);
}
}
}
/// <summary>
/// Unregisters the guard from this semaphore.
/// </summary>
/// <param name="guard">The guard to remove.</param>
public void UnregisterGuard(QueueGuard guard)
{
_guards.Remove(guard);
guard.From.UnregisterGuard(guard);
}
