correction in main script so that it can run for infinite time. Problem that...

correction in main script so that it can run for infinite time. Problem that SimPy3 does not set env.now to last event, so reading from the last exit brought back there

dream/simulation/LineGenerationJSON.py

@@ -1265,7 +1265,7 @@ def main(argv=[], input_data=None):
     #read the input from the JSON file and create the line
     G.JSONData=json.loads(G.InputData)              # create the dictionary JSONData
     readGeneralInput()
-    G.env=simpy.Environment()                       # initialize the environment
+    #G.env=simpy.Environment()                       # initialize the environment
     createObjects()
     createObjectInterruptions()
     setTopology()
@@ -1286,17 +1286,17 @@ def main(argv=[], input_data=None):
         # if the simulation is ran until no more events are scheduled, 
         # then we have to find the end time as the time the last entity ended.
         if G.maxSimTime==-1:
+            # If someone does it for a model that has always events, then it will run forever!
             G.env.run(until=float('inf'))
-#             simulate(until=infinity)    # simulate until there are no more events. 
-#                                         # If someone does it for a model that has always events, then it will run forever!
-#             # identify from the exits what is the time that the last entity has ended. 
-#             endList=[]
-#             for exit in G.ExitList:
-#                 endList.append(exit.timeLastEntityLeft)
-#             G.maxSimTime=float(max(endList))    
+                                         
+            # identify from the exits what is the time that the last entity has ended. 
+            endList=[]
+            for exit in G.ExitList:
+                endList.append(exit.timeLastEntityLeft)
+  
             # identify the time of the last event
-            if G.env.now!=0:    #do not let G.maxSimTime=0 so that there will be no crash
-                G.maxSimTime=env.now
+            if G.env.now!=0 and G.env.now==float('inf'):    #do not let G.maxSimTime=0 so that there will be no crash
+                G.maxSimTime=float(max(endList))
             else:
                 print "simulation ran for 0 time, something may have gone wrong"
                 logger.info("simulation ran for 0 time, something may have gone wrong")