Plan transports at the beginning of the turn.

https://github.com/Khopa/dcs_liberation/issues/823

game/game.py

@@ -337,6 +337,8 @@ class Game:
         self.compute_threat_zones()
         self.ground_planners = {}
 
+        self.transfers.plan_transports()
+
         blue_planner = CoalitionMissionPlanner(self, is_player=True)
         blue_planner.plan_missions()
 

game/transfers.py

@@ -394,9 +394,9 @@ class PendingTransfers:
             if not transfer.completed:
                 incomplete.append(transfer)
         self.pending_transfers = incomplete
-        self.rebuild_convoys()
 
-    def rebuild_convoys(self) -> None:
+    def plan_transports(self) -> None:
         self.convoys.disband_all()
         for transfer in self.pending_transfers:
+            if transfer.transport is None:
                 self.arrange_transport(transfer)

gen/flights/ai_flight_planner.py

@@ -39,7 +39,7 @@ from game.theater.theatergroundobject import (
     NavalGroundObject,
     VehicleGroupGroundObject,
 )
-from game.transfers import Convoy
+from game.transfers import Convoy, TransferOrder
 from game.utils import Distance, nautical_miles
 from gen import Conflict
 from gen.ato import Package