message: no np array in viewer
diff: @@ -86,10 +86,10 @@ class BaseViewer(Viewer):
  self.use_world_bounds = kwargs.pop("use_world_bounds", params["Visualization"]["Camera"]["UseWorldBounds", "", True])
  self.follow_agent_id = kwargs.pop("follow_agent_id", params["Visualization"]["Camera"]["FollowAgentIds", "", None])
  - self.center = kwargs.pop("center", params["Visualization"]["Camera"]["Center", "", np.array([0, 0])])
  + self.center = np.array(kwargs.pop("center", params["Visualization"]["Camera"]["Center", "", [0, 0]]))
  - self.world_x_range = kwargs.pop("x_range", params["Visualization"]["Camera"]["XRange", "", np.array([-40, 40])])
  - self.world_y_range = kwargs.pop("y_range", params["Visualization"]["Camera"]["YRange", "", np.array([-40, 40])])
  + self.world_x_range = np.array(kwargs.pop("x_range", params["Visualization"]["Camera"]["XRange", "", [-40, 40]]))
  + self.world_y_range = np.array(kwargs.pop("y_range", params["Visualization"]["Camera"]["YRange", "", [-40, 40]]))
  self.enforce_x_length = kwargs.pop("enforce_x_length", params["Visualization"]["Camera"]["EnforceXLength", "", True])
  self.enforce_y_length = kwargs.pop("enforce_y_length", params["Visualization"]["Camera"]["EnforceYLength", "", False])
  