def ask_upgrade(self, player: Player):
available_colors = self.available_color_to_upgrade(player.owned_fields, player.mortgage_fields)
if len(player.owned_fields) == 0 or len(available_colors) == 0:
return
else:
available_fields = []
for fields in player.owned_fields.values():
for field in fields:
if not isinstance(field, Utility) and not isinstance(field, Railway):
if field.color in available_colors and field.can_upgrade:
available_fields.append(field)
if len(available_fields) > 0:
for field in available_fields:
if player.in_game:
while field.num_of_house < 4:
if not player.in_game:
return
if player.balance > field.cost_of_upgrade:
answer = player.build_house(self, field)
if answer:
self.upgrade_property(player, field)
else:
break
else:
break
