695 lines
22 KiB
EmacsLisp
695 lines
22 KiB
EmacsLisp
;;; zone.el --- idle display hacks -*- lexical-binding: t -*-
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;; Copyright (C) 2000-2024 Free Software Foundation, Inc.
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;; Author: Victor Zandy <zandy@cs.wisc.edu>
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: games
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;; Created: June 6, 1998
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Don't zone out in front of Emacs! Try M-x zone.
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;; If it eventually irritates you, try M-x zone-leave-me-alone.
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;; Bored by the zone pyrotechnics? Write your own! Add it to
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;; `zone-programs'. See `zone-call' for higher-ordered zoning.
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;; THANKS: Christopher Mayer, Scott Flinchbaugh,
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;; Rachel Kalmar, Max Froumentin, Juri Linkov,
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;; Luigi Panzeri, John Paul Wallington.
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;;; Code:
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(defvar zone-timer nil
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"The timer we use to decide when to zone out, or nil if none.")
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(defvar zone-timeout nil
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"Seconds to timeout the zoning.
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If nil, don't interrupt for about 1^26 seconds.")
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;; Vector of functions that zone out. `zone' will execute one of
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;; these functions, randomly chosen. The chosen function is invoked
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;; in the *zone* buffer, which contains the text of the selected
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;; window. If the function loops, it *must* periodically check and
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;; halt if `input-pending-p' is t (because quitting is disabled when
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;; Emacs idle timers are run).
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(defvar zone-programs [
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zone-pgm-jitter
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zone-pgm-putz-with-case
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zone-pgm-dissolve
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;; zone-pgm-explode
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zone-pgm-whack-chars
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zone-pgm-rotate
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zone-pgm-rotate-LR-lockstep
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zone-pgm-rotate-RL-lockstep
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zone-pgm-rotate-LR-variable
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zone-pgm-rotate-RL-variable
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zone-pgm-drip
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zone-pgm-drip-fretfully
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zone-pgm-five-oclock-swan-dive
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zone-pgm-martini-swan-dive
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zone-pgm-rat-race
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zone-pgm-paragraph-spaz
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zone-pgm-stress
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zone-pgm-stress-destress
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zone-pgm-random-life
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])
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(defmacro zone-orig (&rest body)
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`(with-current-buffer (get 'zone 'orig-buffer)
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,@body))
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(defmacro zone-hiding-mode-line (&rest body)
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;; This formerly worked by temporarily altering face `mode-line',
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;; which did not even work right, it seems.
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`(let (mode-line-format)
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,@body))
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(defun zone-call (program &optional timeout)
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"Call PROGRAM in a zoned way.
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If PROGRAM is a function, call it, interrupting after the amount
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of time in seconds specified by optional arg TIMEOUT, or `zone-timeout'
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if unspecified, q.v.
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PROGRAM can also be a list of elements, which are interpreted like so:
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If the element is a function or a list of a function and a number,
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apply `zone-call' recursively."
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(cond ((functionp program)
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(with-timeout ((or timeout zone-timeout (ash 1 26)))
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(funcall program)))
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((listp program)
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(mapcar (lambda (elem)
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(cond ((functionp elem) (zone-call elem))
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((and (listp elem)
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(functionp (car elem))
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(numberp (cadr elem)))
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(apply 'zone-call elem))
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(t (error "Bad `zone-call' elem: %S" elem))))
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program))))
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;;;###autoload
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(defun zone (&optional pgm)
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"Zone out, completely.
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With a prefix argument the user is prompted for a program to run.
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When called from Lisp the optional argument PGM can be used to
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run a specific program. The program must be a member of
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`zone-programs'."
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(interactive
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(and current-prefix-arg
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(let ((choice (completing-read
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"Program: "
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(mapcar
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(lambda (prog)
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(substring (symbol-name prog) 9))
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zone-programs)
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nil t)))
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(list (intern (concat "zone-pgm-" choice))))))
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(unless pgm
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(setq pgm (aref zone-programs (random (length zone-programs)))))
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(save-window-excursion
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(let ((f (selected-frame))
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(outbuf (get-buffer-create "*zone*"))
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(text (buffer-substring (window-start) (window-end nil t)))
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(wp (1+ (- (window-point)
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(window-start)))))
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(put 'zone 'orig-buffer (current-buffer))
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(switch-to-buffer outbuf)
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(setq mode-name "Zone")
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(erase-buffer)
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(setq buffer-undo-list t
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truncate-lines t
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tab-width (zone-orig tab-width)
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line-spacing (zone-orig line-spacing))
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(insert text)
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(untabify (point-min) (point-max))
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(set-window-start (selected-window) (point-min))
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(set-window-point (selected-window) wp)
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(sit-for 0.500)
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(let ((ct (and f (frame-parameter f 'cursor-type)))
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(show-trailing-whitespace nil)
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restore)
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(when ct
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(modify-frame-parameters f '((cursor-type . (bar . 0)))))
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;; Make `restore' a self-disabling one-shot thunk.
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(setq restore
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(lambda ()
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(when ct
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(modify-frame-parameters
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f (list (cons 'cursor-type ct))))
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(kill-buffer outbuf)
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(setq restore nil)))
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(condition-case nil
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(progn
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(message "Zoning... (%s)" pgm)
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(garbage-collect)
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;; If some input is pending, zone says "sorry", which
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;; isn't nice; this might happen e.g. when they invoke the
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;; game by clicking the menu bar. So discard any pending
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;; input before zoning out.
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(if (input-pending-p)
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(discard-input))
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(zone-call pgm)
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(message "Zoning...sorry"))
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(error
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(funcall restore)
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(while (not (input-pending-p))
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(message "We were zoning when we wrote %s..." pgm)
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(sit-for 3)
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(message "...here's hoping we didn't hose your buffer!")
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(sit-for 3)))
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(quit
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(funcall restore)
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(ding)
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(message "Zoning...sorry")))
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(when restore (funcall restore))))))
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;;;; Zone when idle, or not.
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(defun zone-when-idle (secs)
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"Zone out when Emacs has been idle for SECS seconds."
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(interactive "nHow long before I start zoning (seconds): ")
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(if (timerp zone-timer)
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(cancel-timer zone-timer))
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(setq zone-timer nil)
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(or (<= secs 0)
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(setq zone-timer (run-with-idle-timer secs t 'zone))))
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(defun zone-leave-me-alone ()
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"Don't zone out when Emacs is idle."
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(interactive)
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(if (timerp zone-timer)
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(cancel-timer zone-timer))
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(setq zone-timer nil)
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(message "I won't zone out any more"))
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;;;; jittering
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(defun zone-shift-up ()
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(let* ((b (point))
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(e (progn (forward-line 1) (point)))
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(s (buffer-substring b e)))
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(delete-region b e)
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(goto-char (point-max))
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(insert s)))
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(defun zone-shift-down ()
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(goto-char (point-max))
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(let* ((b (point))
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(e (progn (forward-line -1) (point)))
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(s (buffer-substring b e)))
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(delete-region b e)
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(goto-char (point-min))
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(insert s)))
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(defun zone-shift-left ()
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(let (s)
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(while (not (eobp))
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(unless (eolp)
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(setq s (buffer-substring (point) (1+ (point))))
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(delete-char 1)
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(end-of-line)
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(insert s))
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(ignore-errors (forward-char 1)))))
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(defun zone-shift-right ()
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(goto-char (point-max))
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(let (s)
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(while (not (bobp))
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(unless (bolp)
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(setq s (buffer-substring (1- (point)) (point)))
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(delete-char -1)
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(beginning-of-line)
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(insert s))
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(end-of-line 0))))
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(defun zone-pgm-jitter ()
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(let ((ops [
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zone-shift-left
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zone-shift-right
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zone-shift-down
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zone-shift-up
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]))
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(goto-char (point-min))
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(while (not (input-pending-p))
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(funcall (elt ops (random (length ops))))
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(goto-char (point-min))
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(sit-for 0.01))))
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;;;; whacking chars
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(defun zone-pgm-whack-chars ()
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(let ((tbl (copy-sequence (get 'zone-pgm-whack-chars 'wc-tbl))))
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(while (not (input-pending-p))
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(let ((i 48))
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(while (< i 122)
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(aset tbl i (+ 48 (random (- 123 48))))
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(setq i (1+ i)))
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(translate-region (point-min) (point-max) tbl)
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(sit-for 0.002)))))
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(put 'zone-pgm-whack-chars 'wc-tbl
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(let ((tbl (make-string 128 ?x))
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(i 0))
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(while (< i 128)
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(aset tbl i i)
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(setq i (1+ i)))
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tbl))
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;;;; dissolving
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(defun zone-remove-text ()
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(let ((working t))
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(while working
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(setq working nil)
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(save-excursion
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(goto-char (point-min))
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(while (not (eobp))
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(if (looking-at "[^(){}\n\t ]")
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(let ((n (random 5)))
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(if (not (= n 0))
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(progn
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(setq working t)
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(forward-char 1))
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(delete-char 1)
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(insert " ")))
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(forward-char 1))))
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(sit-for 0.002))))
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(defun zone-pgm-dissolve ()
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(zone-remove-text)
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(zone-pgm-jitter))
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;;;; exploding
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(defun zone-exploding-remove ()
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(let ((i 0))
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(while (< i 5)
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(save-excursion
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(goto-char (point-min))
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(while (not (eobp))
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(if (looking-at "[^*\n\t ]")
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(let ((n (random 5)))
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(if (not (= n 0))
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(forward-char 1))
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(insert " ")))
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(forward-char 1)))
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(setq i (1+ i))
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(sit-for 0.002)))
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(zone-pgm-jitter))
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(defun zone-pgm-explode ()
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(zone-exploding-remove)
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(zone-pgm-jitter))
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;;;; putzing with case
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;; Faster than `zone-pgm-putz-with-case', but not as good: all
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;; instances of the same letter have the same case, which produces a
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;; less interesting effect than you might imagine.
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(defun zone-pgm-2nd-putz-with-case ()
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(let ((tbl (make-string 128 ?x))
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(i 0))
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(while (< i 128)
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(aset tbl i i)
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(setq i (1+ i)))
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(while (not (input-pending-p))
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(setq i ?a)
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(while (<= i ?z)
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(aset tbl i
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(if (zerop (random 5))
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(upcase i)
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(downcase i)))
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(setq i (+ i (1+ (random 5)))))
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(setq i ?A)
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(while (<= i ?z)
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(aset tbl i
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(if (zerop (random 5))
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(downcase i)
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(upcase i)))
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(setq i (+ i (1+ (random 5)))))
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(translate-region (point-min) (point-max) tbl)
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(sit-for 0.002))))
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(defun zone-pgm-putz-with-case ()
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(goto-char (point-min))
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(while (not (input-pending-p))
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(let ((np (+ 2 (random 5)))
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(pm (point-max)))
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(while (< np pm)
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(funcall (if (zerop (random 2)) 'upcase-region
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'downcase-region) (1- np) np)
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(setq np (+ np (1+ (random 5))))))
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(goto-char (point-min))
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(sit-for 0.002)))
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;;;; rotating
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(defun zone-line-specs ()
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(let ((ok t)
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ret)
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(save-excursion
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(goto-char (window-start))
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(while (and ok (< (point) (window-end)))
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(when (looking-at "[\t ]*\\([^\n]+\\)")
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(setq ret (cons (cons (match-beginning 1) (match-end 1)) ret)))
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(setq ok (zerop (forward-line 1)))))
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ret))
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(defun zone-pgm-rotate (&optional random-style)
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(let* ((specs (apply
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'vector
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(let (res)
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(mapc (lambda (ent)
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(let* ((beg (car ent))
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(end (cdr ent))
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(amt (if random-style
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(funcall random-style)
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(- (random 7) 3))))
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(when (< (- end (abs amt)) beg)
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(setq amt (random (- end beg))))
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(unless (= 0 amt)
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(setq res
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(cons
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(vector amt beg (- end (abs amt)))
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res)))))
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(zone-line-specs))
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res)))
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(n (length specs))
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amt aamt cut paste txt i ent)
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(while (not (input-pending-p))
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(setq i 0)
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(while (< i n)
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(setq ent (aref specs i))
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(setq amt (aref ent 0) aamt (abs amt))
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(if (> 0 amt)
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(setq cut 1 paste 2)
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(setq cut 2 paste 1))
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(goto-char (aref ent cut))
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(setq aamt (min aamt (- (point-max) (point))))
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(setq txt (buffer-substring (point) (+ (point) aamt)))
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(delete-char aamt)
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(goto-char (aref ent paste))
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(insert txt)
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(setq i (1+ i)))
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(sit-for 0.04))))
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(defun zone-pgm-rotate-LR-lockstep ()
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(zone-pgm-rotate (lambda () 1)))
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(defun zone-pgm-rotate-RL-lockstep ()
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(zone-pgm-rotate (lambda () -1)))
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(defun zone-pgm-rotate-LR-variable ()
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(zone-pgm-rotate (lambda () (1+ (random 3)))))
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(defun zone-pgm-rotate-RL-variable ()
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(zone-pgm-rotate (lambda () (1- (- (random 3))))))
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;;;; dripping
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(defsubst zone-cpos (pos)
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(buffer-substring pos (1+ pos)))
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(defsubst zone-replace-char (count del-count char-as-string new-value)
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(delete-char (or del-count (- count)))
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(aset char-as-string 0 new-value)
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(dotimes (_ count) (insert char-as-string)))
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(defsubst zone-park/sit-for (pos seconds)
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(let ((p (point)))
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(goto-char pos)
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(prog1 (sit-for seconds)
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(goto-char p))))
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(defun zone-fret (wbeg pos)
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(let* ((case-fold-search nil)
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(c-string (zone-cpos pos))
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(cw-ceil (ceiling (char-width (aref c-string 0))))
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(hmm (cond
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((string-match "[a-z]" c-string) (upcase c-string))
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((string-match "[A-Z]" c-string) (downcase c-string))
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(t (propertize " " 'display `(space :width ,cw-ceil)))))
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(wait 0.5))
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(dotimes (i 20)
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(goto-char pos)
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(delete-char 1)
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(insert (if (= 0 (% i 2)) hmm c-string))
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(zone-park/sit-for wbeg (setq wait (* wait 0.8))))
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(delete-char -1) (insert c-string)))
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(defun zone-fill-out-screen (width height)
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(let ((start (window-start))
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(line (make-string width 32)))
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(goto-char start)
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;; fill out rectangular ws block
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(while (progn (end-of-line)
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(let ((cc (current-column)))
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(if (< cc width)
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(insert (substring line cc))
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(delete-char (- width cc)))
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(cond ((eobp) (insert "\n") nil)
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(t (forward-char 1) t)))))
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;; pad ws past bottom of screen
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(let ((nl (- height (count-lines (point-min) (point)))))
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(when (> nl 0)
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(setq line (concat line "\n"))
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(dotimes (_ nl)
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(insert line))))
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(goto-char start)
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(recenter 0)
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(sit-for 0)))
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(defun zone-fall-through-ws (c wbeg wend)
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(let* ((cw-ceil (ceiling (char-width (aref c 0))))
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(spaces (make-string cw-ceil 32))
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(col (current-column))
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(wait 0.15)
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newpos fall-p)
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(while (when (save-excursion
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(and (zerop (forward-line 1))
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(progn
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(forward-char col)
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(= col (current-column)))
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(setq newpos (point))
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(string= spaces (buffer-substring-no-properties
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newpos (+ newpos cw-ceil)))
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(setq newpos (+ newpos (1- cw-ceil)))))
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(setq fall-p t)
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(delete-char 1)
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(insert spaces)
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(goto-char newpos)
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(when (< (point) wend)
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(delete-char cw-ceil)
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(insert c)
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(forward-char -1)
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(zone-park/sit-for wbeg (setq wait (* wait 0.8))))))
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|
fall-p))
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|
|
|
(defun zone-pgm-drip (&optional fret-p pancake-p)
|
|
(let* ((ww (1- (window-width)))
|
|
(wh (window-height))
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(mc 0) ; miss count
|
|
(total (* ww wh))
|
|
(fall-p nil)
|
|
wbeg wend c)
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|
(zone-fill-out-screen ww wh)
|
|
(setq wbeg (window-start)
|
|
wend (window-end))
|
|
(catch 'done
|
|
(while (not (input-pending-p))
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|
(setq mc 0 wend (window-end))
|
|
;; select non-ws character, but don't miss too much
|
|
(goto-char (+ wbeg (random (- wend wbeg))))
|
|
(while (looking-at "[ \n\f]")
|
|
(if (= total (setq mc (1+ mc)))
|
|
(throw 'done 'sel)
|
|
(goto-char (+ wbeg (random (- wend wbeg))))))
|
|
;; character animation sequence
|
|
(let ((p (point)))
|
|
(when fret-p (zone-fret wbeg p))
|
|
(goto-char p)
|
|
(setq c (zone-cpos p)
|
|
fall-p (zone-fall-through-ws c wbeg wend)))
|
|
;; assuming current-column has not changed...
|
|
(when (and pancake-p
|
|
fall-p
|
|
(< (count-lines (point-min) (point))
|
|
wh))
|
|
(let ((cw (ceiling (char-width (aref c 0)))))
|
|
(zone-replace-char cw 1 c ?@) (zone-park/sit-for wbeg 0.137)
|
|
(zone-replace-char cw nil c ?*) (zone-park/sit-for wbeg 0.137)
|
|
(zone-replace-char cw nil c ?_)))))))
|
|
|
|
(defun zone-pgm-drip-fretfully ()
|
|
(zone-pgm-drip t))
|
|
|
|
(defun zone-pgm-five-oclock-swan-dive ()
|
|
(zone-pgm-drip nil t))
|
|
|
|
(defun zone-pgm-martini-swan-dive ()
|
|
(zone-pgm-drip t t))
|
|
|
|
(defun zone-pgm-rat-race ()
|
|
(while (not (input-pending-p))
|
|
(zone-call '((zone-pgm-rotate 10)
|
|
(zone-pgm-drip-fretfully 15)
|
|
(zone-pgm-drip 10)
|
|
((lambda ()
|
|
(goto-char (point-min))
|
|
(while (re-search-forward " +$" nil t)
|
|
(delete-region (match-beginning 0) (match-end 0))))
|
|
5)))))
|
|
|
|
|
|
;;;; paragraph spazzing (for textish modes)
|
|
|
|
(defun zone-pgm-paragraph-spaz ()
|
|
(if (memq (zone-orig major-mode)
|
|
;; there should be a better way to distinguish textish modes
|
|
'(text-mode texinfo-mode fundamental-mode))
|
|
(let ((fill-column fill-column)
|
|
(fc-min fill-column)
|
|
(fc-max fill-column)
|
|
(max-fc (1- (frame-width))))
|
|
(while (sit-for 0.1)
|
|
(fill-paragraph 1)
|
|
(setq fill-column (+ fill-column (- (random 5) 2)))
|
|
(when (< fill-column fc-min)
|
|
(setq fc-min fill-column))
|
|
(when (> fill-column max-fc)
|
|
(setq fill-column max-fc))
|
|
(when (> fill-column fc-max)
|
|
(setq fc-max fill-column))))
|
|
(message "Zoning... (zone-pgm-rotate)")
|
|
(zone-pgm-rotate)))
|
|
|
|
|
|
;;;; stressing and destressing
|
|
|
|
(defun zone-pgm-stress ()
|
|
(goto-char (point-min))
|
|
(let ((ok t)
|
|
lines)
|
|
(while (and ok (< (point) (point-max)))
|
|
(let ((p (point)))
|
|
(setq ok (zerop (forward-line 1))
|
|
lines (cons (buffer-substring p (point)) lines))))
|
|
(sit-for 5)
|
|
(zone-hiding-mode-line
|
|
(let ((msg "Zoning... (zone-pgm-stress)"))
|
|
(while (not (string= msg ""))
|
|
(message (setq msg (substring msg 1)))
|
|
(sit-for 0.05)))
|
|
(while (not (input-pending-p))
|
|
(when (< 50 (random 100))
|
|
(goto-char (point-max))
|
|
(forward-line -1)
|
|
(delete-region (point) (line-beginning-position 2))
|
|
(goto-char (point-min))
|
|
(insert (seq-random-elt lines)))
|
|
(message (concat (make-string (random (- (frame-width) 5)) ? ) "grrr"))
|
|
(sit-for 0.1)))))
|
|
|
|
(defun zone-pgm-stress-destress ()
|
|
(zone-call 'zone-pgm-stress 25)
|
|
(zone-hiding-mode-line
|
|
(sit-for 3)
|
|
(erase-buffer)
|
|
(sit-for 3)
|
|
(insert-buffer-substring "*Messages*")
|
|
(message "")
|
|
(goto-char (point-max))
|
|
(recenter -1)
|
|
(sit-for 3)
|
|
(delete-region (point-min) (window-start))
|
|
(message "hey why stress out anyway?")
|
|
(zone-call '((zone-pgm-rotate 30)
|
|
(zone-pgm-whack-chars 10)
|
|
zone-pgm-drip))))
|
|
|
|
|
|
;;;; the lyfe so short the craft so long to lerne --chaucer
|
|
|
|
(defvar zone-pgm-random-life-wait nil
|
|
"Seconds to wait between successive `life' generations.
|
|
If nil, `zone-pgm-random-life' chooses a value from 0-3 (inclusive).")
|
|
|
|
(defvar life-patterns) ; from life.el
|
|
|
|
(defun zone-pgm-random-life ()
|
|
(require 'life)
|
|
(zone-fill-out-screen (1- (window-width)) (1- (window-height)))
|
|
(let ((top (progn (goto-char (window-start)) (forward-line 7) (point)))
|
|
(bot (progn (goto-char (window-end)) (forward-line -7) (point)))
|
|
(rtc (- (frame-width) 11))
|
|
(min (window-start))
|
|
(max (1- (window-end)))
|
|
s c col)
|
|
(delete-region max (point-max))
|
|
(while (and (progn (goto-char min) (sit-for 0.05))
|
|
(progn (goto-char (+ min (random max)))
|
|
(or (progn (skip-chars-forward " @\n" max)
|
|
(not (= max (point))))
|
|
(unless (or (= 0 (skip-chars-backward " @\n" min))
|
|
(= min (point)))
|
|
(forward-char -1)
|
|
t))))
|
|
(unless (or (eolp) (eobp))
|
|
(setq s (zone-cpos (point))
|
|
c (aref s 0))
|
|
(zone-replace-char
|
|
(char-width c)
|
|
1 s (cond ((or (> top (point))
|
|
(< bot (point))
|
|
(or (> 11 (setq col (current-column)))
|
|
(< rtc col)))
|
|
32)
|
|
((and (<= ?a c) (>= ?z c)) (+ c (- ?A ?a)))
|
|
((and (<= ?A c) (>= ?Z c)) ?*)
|
|
(t ?@)))))
|
|
(sit-for 3)
|
|
(setq col nil)
|
|
(goto-char bot)
|
|
(while (< top (point))
|
|
(setq c (point))
|
|
(move-to-column 9)
|
|
(setq col (cons (buffer-substring (point) c) col))
|
|
(end-of-line 0)
|
|
(forward-char -10))
|
|
(let ((life-patterns (vector
|
|
(if (and col (search-forward "@" max t))
|
|
(cons (make-string (length (car col)) 32) col)
|
|
(list (mapconcat 'identity
|
|
(make-list (/ (- rtc 11) 15)
|
|
(make-string 5 ?@))
|
|
(make-string 10 32)))))))
|
|
(life (or zone-pgm-random-life-wait (random 4)))
|
|
(kill-buffer nil))))
|
|
|
|
|
|
;;;;;;;;;;;;;;;
|
|
(provide 'zone)
|
|
|
|
;;; zone.el ends here
|