common event

events/EnterUpperPlayfieldEvent.py

@@ -1,7 +1,9 @@
+from Event import Event
+
 from solenoids.TopFlipper import TopFlipper
 
 
-class EnterUpperPlayfieldEvent:
+class EnterUpperPlayfieldEvent(Event):
     def __init__(self, playerState):
         self.playerState = playerState
         self.flipper = TopFlipper()