Index: lang/ruby/starframe/lib/starframe/sprite/collidable.rb
===================================================================
--- lang/ruby/starframe/lib/starframe/sprite/collidable.rb (revision 27463)
+++ lang/ruby/starframe/lib/starframe/sprite/collidable.rb (revision 27466)
@@ -16,4 +16,6 @@
     #   end
     module Collidable
+      include Collision
+      
       def self.included sprite #:nodoc:
         sprite.extend ClassMethods