Track reopened supply chests and fix API snapshots

tests/test_grab_supplies.py

@@ -78,6 +78,44 @@ class GroundSupplyTests(unittest.TestCase):
         self.assertEqual(state.chest, position)
         self.assertIs(state.state.__func__, state.path_to_supply_chest.__func__)
 
+    def test_empty_supply_chest_is_skipped_until_another_player_opens_it(self):
+        position = (4, 64, 0)
+        key = (position,)
+        event = {'position': position, 'timestamp': 1.0}
+        g = Munch(chest_open_events=[])
+        state = GrabSuppliesStates(g)
+        state.supplies = {(999999,): (1, 1)}
+        state.current_supply_chest_key = key
+
+        class FakeGame:
+            @staticmethod
+            def count_items(_item_ids):
+                return 1
+
+        state.g.game = FakeGame()
+        state.choose_items()
+        self.assertIn(key, state.useless_chests)
+        self.assertIs(state.state.__func__, state.close_supply_chest.__func__)
+
+        second_position = (8, 64, 0)
+        state.supply_chests = [
+            {'position': position, 'positions': key},
+            {'position': second_position, 'positions': (second_position,)},
+        ]
+        state.checked_supply_chests = {key}
+        state.choose_supply_chest()
+        self.assertEqual(state.chest, second_position)
+
+        g.chest_open_events.append(event)
+        state.state = state.idle
+        state.run()
+        self.assertNotIn(key, state.useless_chests)
+        self.assertNotIn(key, state.checked_supply_chests)
+
+        state.supply_chests = [{'position': position, 'positions': key}]
+        state.choose_supply_chest()
+        self.assertEqual(state.chest, position)
+
     def test_unreachable_supply_chest_ends_task_without_searching_barrels(self):
         class FakeWorld:
             @staticmethod