Handle attract mode missing carousel

Author: avanwinkle

mpf/modes/attract/code/attract.py

@@ -21,6 +21,13 @@ def __init__(self, *args, **kwargs):
         self.start_hold_time = 0.0
         self.start_buttons_held = list()
 
+    def mode_init(self):
+        """Initialize the mode and handle missing carousel items."""
+        try:
+            super().mode_init()
+        except AssertionError:
+            pass
+
     def mode_start(self, **kwargs):
         """Start the attract mode."""
         # register switch handlers for the start button press so we can
@@ -49,7 +56,9 @@ def mode_start(self, **kwargs):
                 playfield.ball_search.enable()
                 playfield.ball_search.start()
 
-        super().mode_start(**kwargs)
+        # Check for carousel items
+        if self._all_items:
+            super().mode_start(**kwargs)
 
     def start_button_pressed(self):
         """Handle start button press.