* EXCEPTION:
* ERROR:
{:x=>16, :y=>0}

I don't know how to use the above Hash with SDL's FFI. Please
add a method on the object called ~primitive_marker~ that
returns :solid, :sprite, :label, :line, or :border. If the object
is a Hash, please add { primitive_marker: :PRIMITIVE_SYMBOL } to the Hash.


** Backtrace: