+\r
+(defaction lock (obj key)\r
+ "Not lockable.")\r
+\r
+(defmethod lock ((obj container) (key item))\r
+ (unless (and (has obj :container) \r
+ (has obj :openable)\r
+ (has obj :lockable))\r
+ (return-from lock (call-next-method)))\r
+ (if (has obj :locked) \r
+ (format nil "~a is already locked." (the-name obj))\r
+ (if (hasnt obj :closed)\r
+ (format nil "~a is not closed." (the-name obj))\r
+ (if (with-keys obj key)\r
+ (progn\r
+ (give obj :locked)\r
+ (when (run-action-after obj)\r
+ (format nil "You lock ~a." (the-name obj))))\r
+ (format nil "You cannot lock ~a with ~a."\r
+ (the-name obj) (the-name key))))))\r
+\r
+(defaction unlock (obj key)\r
+ "There is nothing to unlock.")\r
+\r
+(defmethod unlock ((obj container) (key item))\r
+ (unless (and (has obj :container) \r
+ (has obj :openable)\r
+ (has obj :lockable))\r
+ (return-from unlock (call-next-method)))\r
+ (if (hasnt obj :locked) \r
+ (format nil "~a is already unlocked." (the-name obj))\r
+ (if (hasnt obj :closed)\r
+ (format nil "~a is not closed." (the-name obj))\r
+ (if (with-keys obj key)\r
+ (progn\r
+ (give obj :~locked)\r
+ (when (run-action-after obj)\r
+ (format nil "You unlock ~a." (the-name obj))))\r
+ (format nil "You cannot unlock ~a with ~a."\r
+ (the-name obj) (the-name key))))))\r
+\r
+(defaction open-unlock (obj key)\r
+ "You cannot open this.")\r
+\r
+(defmethod open-unlock ((obj container) (key item))\r
+ (unless (and (has obj :container) \r
+ (has obj :openable))\r
+ (return-from open-unlock (call-next-method)))\r
+ (and (run-action 'unlock *args*)\r
+ (run-action 'open obj)))\r