X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/723088480da2c8320e0944bc23f9b72fccb54319..ce8171797dafbde765170b79e5f154afc4872e86:/lisp/play/blackbox.el

diff --git a/lisp/play/blackbox.el b/lisp/play/blackbox.el
index 4e8790c358..8e4106e03e 100644
--- a/lisp/play/blackbox.el
+++ b/lisp/play/blackbox.el
@@ -1,6 +1,7 @@
 ;;; blackbox.el --- blackbox game in Emacs Lisp
 
-;; Copyright (C) 1985-1987, 1992, 2001-2012 Free Software Foundation, Inc.
+;; Copyright (C) 1985-1987, 1992, 2001-2014 Free Software Foundation,
+;; Inc.
 
 ;; Author: F. Thomas May <uw-nsr!uw-warp!tom@beaver.cs.washington.edu>
 ;; Adapted-By: ESR
@@ -112,9 +113,8 @@
     map))
 
 ;; Blackbox mode is suitable only for specially formatted data.
-(put 'blackbox-mode 'mode-class 'special)
 
-(defun blackbox-mode ()
+(define-derived-mode blackbox-mode special-mode "Blackbox"
   "Major mode for playing blackbox.
 To learn how to play blackbox, see the documentation for function `blackbox'.
 
@@ -123,13 +123,7 @@ The usual mnemonic keys move the cursor around the box.
 
 \\[bb-romp] -- send in a ray from point, or toggle a ball at point
 \\[bb-done] -- end game and get score"
-  (interactive)
-  (kill-all-local-variables)
-  (use-local-map blackbox-mode-map)
-  (setq truncate-lines t)
-  (setq major-mode 'blackbox-mode)
-  (setq mode-name "Blackbox")
-  (run-mode-hooks 'blackbox-mode-hook))
+  (setq truncate-lines t))
 
 ;;;###autoload
 (defun blackbox (num)
@@ -259,7 +253,6 @@ a reflection."
   (bb-goto (cons bb-x bb-y)))
 
 (defun bb-init-board (num-balls)
-  (random t)
   (let (board pos)
     (while (>= (setq num-balls (1- num-balls)) 0)
       (while