Do interactive mode tagging for snake.el

lisp/play/snake.el

@@ -336,38 +336,38 @@ Argument SNAKE-BUFFER is the name of the buffer."
 
 (defun snake-move-left ()
   "Make the snake move left."
-  (interactive)
+  (interactive nil snake-mode)
   (when (zerop (snake-final-x-velocity))
     (push '(-1 0) snake-velocity-queue)))
 
 (defun snake-move-right ()
   "Make the snake move right."
-  (interactive)
+  (interactive nil snake-mode)
   (when (zerop (snake-final-x-velocity))
     (push '(1 0) snake-velocity-queue)))
 
 (defun snake-move-up ()
   "Make the snake move up."
-  (interactive)
+  (interactive nil snake-mode)
   (when (zerop (snake-final-y-velocity))
     (push '(0 -1) snake-velocity-queue)))
 
 (defun snake-move-down ()
   "Make the snake move down."
-  (interactive)
+  (interactive nil snake-mode)
   (when (zerop (snake-final-y-velocity))
     (push '(0 1) snake-velocity-queue)))
 
 (defun snake-end-game ()
   "Terminate the current game."
-  (interactive)
+  (interactive nil snake-mode)
   (gamegrid-kill-timer)
   (use-local-map snake-null-map)
   (gamegrid-add-score snake-score-file snake-score))
 
 (defun snake-start-game ()
   "Start a new game of Snake."
-  (interactive)
+  (interactive nil snake-mode)
   (snake-reset-game)
   (snake-set-dot)
   (use-local-map snake-mode-map)
@@ -375,7 +375,7 @@ Argument SNAKE-BUFFER is the name of the buffer."
 
 (defun snake-pause-game ()
   "Pause (or resume) the current game."
-  (interactive)
+  (interactive nil snake-mode)
   (setq snake-paused (not snake-paused))
   (message (and snake-paused "Game paused (press p to resume)")))
 
@@ -386,6 +386,7 @@ Argument SNAKE-BUFFER is the name of the buffer."
 
 (define-derived-mode snake-mode special-mode "Snake"
   "A mode for playing Snake."
+  :interactive nil
 
   (add-hook 'kill-buffer-hook 'gamegrid-kill-timer nil t)