* EXCEPTION:
* ERROR - :state method missing on ~Class~.

#+begin_src ~Class#inspect~
NIL
#+end_src ~Class#inspect~



The method named
  :state
doesn't exist on [NilClass].

(suggestions above)
** Backtrace:
*** app/main.rb:190:in collision?
*** app/main.rb:174:in set_axis
*** app/main.rb:174:in set_axis
*** app/main.rb:123:in initialize
*** app/main.rb:591:in build_world
*** app/main.rb:589:in build_world
*** app/main.rb:607:in tick