Update central_command.py, commander.py and one other file

nullptr/central_command.py

@@ -31,6 +31,15 @@ class CentralCommand:
     mission.step()
     return True
     
+  def run_interactive(self):
+    print('auto mode. hit enter to stop')
+    t = Thread(target=self.wait_for_stop)
+    t.daemon = True
+    t.start()
+    self.run()
+    print('manual mode')
+  
+  
   def wait_for_stop(self):
     try:
       input()
@@ -39,13 +48,6 @@ class CentralCommand:
     self.stopping = True
     print('stopping...')
   
-  def run_interactive(self):
-    print('auto mode. hit enter to stop')
-    t = Thread(target=self.wait_for_stop)
-    t.daemon = True
-    t.start()
-    self.run()
-    print('manual mode')
   
   def run(self):
     self.update_missions()

nullptr/commander.py

@@ -123,6 +123,8 @@ class Commander(CommandLine):
   
   def do_chaul(self):
     if not self.has_ship(): return     
+    if len(ship.cargo) > 0:
+      raise CommandError('please dump cargo first')
     contract = self.active_contract()
     delivery = contract.unfinished_delivery()
     if delivery is None:

nullptr/models/marketplace.py

@@ -25,6 +25,7 @@ class Marketplace(SystemMember):
         price['symbol'] = symbol
         price['buy'] = mg(g, 'purchasePrice')
         price['sell'] = mg(g, 'sellPrice')
+        price['volume'] = mg(g, 'tradeVolume')
         prices[symbol] = price
       self.prices = prices