+ :documentation "The animation of this object")
+ (animation-bounds :initarg :animation-bounds
+ :accessor animation-bounds
+ :initform (make-xy 50 50)
+ :documentation "When drawing, objects outside the
+ screen are tried not to be drawn via SDL. This determines, how far
+ in every direction the graphics may go outside the
+ collision-rectangle. Try to keep this number small. If it is too
+ huge, you may get numeric errors. 50/50 should be sufficient for
+ most objects. If this value is nil, the object will always be
+ drawn.")))