diff options
Diffstat (limited to 'lisp/play/blackbox.el')
| -rw-r--r-- | lisp/play/blackbox.el | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/lisp/play/blackbox.el b/lisp/play/blackbox.el index ffde5c46021..fb0474d1460 100644 --- a/lisp/play/blackbox.el +++ b/lisp/play/blackbox.el @@ -51,11 +51,11 @@ ;; 2 H 4 H ;; ;; Rays which enter and exit are numbered. You can see that rays 1 & 5 pass -;; thru the box undisturbed. Ray 2 is deflected by the northwesternmost +;; thru the box undisturbed. Ray 2 is deflected by the northwesternmost ;; ball. Likewise rays 3 and 4. Rays which hit balls and are absorbed are ;; marked with H. The bottom of the left and the right of the bottom hit ;; the southeastern ball directly. Rays may also hit balls after being -;; reflected. Consider the H on the bottom next to the 4. It bounces off +;; reflected. Consider the H on the bottom next to the 4. It bounces off ;; the NW-ern most ball and hits the central ball. A ray shot from above ;; the right side 5 would hit the SE-ern most ball. The R beneath the 5 ;; is because the ball is returned instantly. It is not allowed into @@ -69,8 +69,6 @@ ;;; Code: -(defvar blackbox-mode-map nil "") - (defvar bb-board nil "Blackbox board.") @@ -89,23 +87,28 @@ (defvar bb-balls-placed nil "List of already placed balls.") -(unless blackbox-mode-map - (setq blackbox-mode-map (make-keymap)) - (suppress-keymap blackbox-mode-map t) - (define-key blackbox-mode-map "\C-f" 'bb-right) - (define-key blackbox-mode-map [right] 'bb-right) - (define-key blackbox-mode-map "\C-b" 'bb-left) - (define-key blackbox-mode-map [left] 'bb-left) - (define-key blackbox-mode-map "\C-p" 'bb-up) - (define-key blackbox-mode-map [up] 'bb-up) - (define-key blackbox-mode-map "\C-n" 'bb-down) - (define-key blackbox-mode-map [down] 'bb-down) - (define-key blackbox-mode-map "\C-e" 'bb-eol) - (define-key blackbox-mode-map "\C-a" 'bb-bol) - (define-key blackbox-mode-map " " 'bb-romp) - (define-key blackbox-mode-map [insert] 'bb-romp) - (define-key blackbox-mode-map "\C-m" 'bb-done) - (define-key blackbox-mode-map [kp-enter] 'bb-done)) +;; This is used below to remap existing bindings for cursor motion to +;; blackbox-specific bindings in blackbox-mode-map. This is so that +;; users who prefer non-default key bindings for cursor motion don't +;; lose that when they play Blackbox. +(defun blackbox-redefine-key (map oldfun newfun) + "Redefine keys that run the function OLDFUN to run NEWFUN instead." + (define-key map (vector 'remap oldfun) newfun)) + + +(defvar blackbox-mode-map + (let ((map (make-keymap))) + (suppress-keymap map t) + (blackbox-redefine-key map 'backward-char 'bb-left) + (blackbox-redefine-key map 'forward-char 'bb-right) + (blackbox-redefine-key map 'previous-line 'bb-up) + (blackbox-redefine-key map 'next-line 'bb-down) + (blackbox-redefine-key map 'move-end-of-line 'bb-eol) + (blackbox-redefine-key map 'move-beginning-of-line 'bb-bol) + (define-key map " " 'bb-romp) + (define-key map [insert] 'bb-romp) + (blackbox-redefine-key map 'newline 'bb-done) + map)) ;; Blackbox mode is suitable only for specially formatted data. (put 'blackbox-mode 'mode-class 'special) @@ -431,5 +434,5 @@ a reflection." (provide 'blackbox) -;;; arch-tag: 6c474c62-5617-4b10-9b44-ac430168c0e2 +;; arch-tag: 6c474c62-5617-4b10-9b44-ac430168c0e2 ;;; blackbox.el ends here |