Track reopened supply chests and fix API snapshots

mosfet/game.py

@@ -385,8 +385,15 @@ class LegacyGame:
         self.g.connection.write_packet(packet)
 
     def open_container(self, location):
+        location = tuple(int(value) for value in location)
         bid = self.g.chunks.get_block_at(*location)
-        # TODO: check if block is a chest??
+        block_name = blocks.BLOCKS.get(bid)
+        if (block_name and block_name != 'ender_chest' and
+                (block_name == 'chest' or block_name.endswith('_chest'))):
+            self.g.pending_chest_open = {
+                'position': location,
+                'requested_at': time.monotonic(),
+            }
         self.place_block(location, BlockFace.TOP)
 
     def handle_window(self, packet):