use a new function to create the fixed preceedings and use the information in the runway manager

aman/sys/aco/RunwayManager.py

@@ -1,5 +1,7 @@
 #!/usr/bin/env python
 
+import copy
+
 from datetime import datetime, timedelta
 
 from aman.config.RunwaySequencing import RunwayAssignmentType
@@ -11,15 +13,9 @@ class RunwayManager:
     def __init__(self, configuration : Configuration):
         self.Spacings = SpacingConstraints()
         self.Configuration = configuration
+        self.RunwayInbounds = copy.deepcopy(configuration.PreceedingRunwayInbounds)
+        self.IafInbounds = copy.deepcopy(configuration.PreceedingIafInbounds)
 
-        # initialize the tracker which inbound arrives at which runway
-        self.RunwayInbounds = {}
-        if None != configuration.PreceedingInbounds:
-            for runway in configuration.PreceedingInbounds:
-                self.RunwayInbounds[runway] = configuration.PreceedingInbounds[runway]
-        for runway in configuration.RunwayConstraints.ActiveArrivalRunways:
-            if not runway.Runway.Name in self.RunwayInbounds:
-                self.RunwayInbounds[runway.Runway.Name] = None
 
     def calculateEarliestArrivalTime(self, runway : str, node : Node, earliestArrivalTime : datetime):
         constrainedETA = None