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567 lines
16 KiB
EmacsLisp
567 lines
16 KiB
EmacsLisp
;;; zone.el --- idle display hacks
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;; Copyright (C) 2000 Free Software Foundation, Inc.
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;;; Author: Victor Zandy <zandy@cs.wisc.edu>
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;;; Maintainer: Thien-Thi Nguyen <ttn@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 2, or (at your option)
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;; 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; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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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'.
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;; WARNING: Not appropriate for Emacs sessions over modems or
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;; computers as slow as mine.
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;; THANKS: Christopher Mayer, Scott Flinchbaugh, Rachel Kalmar,
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;; Max Froumentin.
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;;; Code:
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(require 'timer)
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(require 'tabify)
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(eval-when-compile (require 'cl))
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(defvar zone-timer nil)
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(defvar zone-idle 20
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"*Seconds to idle before zoning out.")
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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-paragraph-spaz
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zone-pgm-stress
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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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;;;###autoload
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(defun zone ()
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"Zone out, completely."
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(interactive)
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(and (timerp zone-timer) (cancel-timer zone-timer))
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(setq zone-timer nil)
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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)))
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(wp (1+ (- (window-point (selected-window))
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(window-start)))))
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(put 'zone 'orig-buffer (current-buffer))
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(set-buffer outbuf)
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(setq mode-name "Zone")
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(erase-buffer)
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(insert text)
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(switch-to-buffer outbuf)
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(setq buffer-undo-list t)
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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 ((pgm (elt zone-programs (random (length zone-programs))))
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(ct (and f (frame-parameter f 'cursor-type))))
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(when ct (modify-frame-parameters f '((cursor-type . (bar . 0)))))
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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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(funcall pgm)
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(message "Zoning...sorry"))
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(error
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(while (not (input-pending-p))
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(message (format "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 (ding) (message "Zoning...sorry")))
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(when ct (modify-frame-parameters f (list (cons 'cursor-type ct)))))
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(kill-buffer outbuf)
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(zone-when-idle zone-idle)))
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;;;; Zone when idle, or not.
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(defvar zone-timer nil
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"Timer that zone sets to triggle idle zoning out.
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If t, zone won't zone out.")
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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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(or (<= secs 0)
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(eq zone-timer t)
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(timerp zone-timer)
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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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(and (timerp zone-timer) (cancel-timer zone-timer))
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(setq zone-timer t)
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(message "I won't zone out any more"))
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;;;; zone-pgm-jitter
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(defun zone-shift-up ()
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(let* ((b (point))
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(e (progn
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(end-of-line)
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(if (looking-at "\n") (1+ (point)) (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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(forward-line -1)
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(beginning-of-line)
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(let* ((b (point))
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(e (progn
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(end-of-line)
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(if (looking-at "\n") (1+ (point)) (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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(while (not (eobp))
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(or (eolp)
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(let ((c (following-char)))
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(delete-char 1)
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(end-of-line)
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(insert c)))
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(forward-line 1)))
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(defun zone-shift-right ()
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(while (not (eobp))
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(end-of-line)
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(or (bolp)
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(let ((c (preceding-char)))
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(delete-backward-char 1)
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(beginning-of-line)
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(insert c)))
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(forward-line 1)))
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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-left
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zone-shift-left
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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-down
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zone-shift-down
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zone-shift-down
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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 10))))
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;;;; zone-pgm-whack-chars
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(defvar zone-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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(defun zone-pgm-whack-chars ()
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(let ((tbl (copy-sequence zone-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 2)))))
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;;;; zone-pgm-dissolve
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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 2))))
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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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;;;; zone-pgm-explode
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(defun zone-exploding-remove ()
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(let ((i 0))
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(while (< i 20)
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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 2)))
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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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;;;; zone-pgm-putz-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 2))))
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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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(goto-char np)
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(let ((prec (preceding-char))
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(props (text-properties-at (1- (point)))))
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(insert (if (zerop (random 2))
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(upcase prec)
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(downcase prec)))
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(set-text-properties (1- (point)) (point) props))
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(backward-char 2)
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(delete-char 1)
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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 2)))
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;;;; zone-pgm-rotate
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(defun zone-line-specs ()
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(let (ret)
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(save-excursion
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(goto-char (window-start))
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(while (< (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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(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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(mapcar (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 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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;;;; zone-pgm-drip
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(defun zone-cpos (pos)
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(buffer-substring pos (1+ pos)))
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(defun zone-fret (pos)
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(let* ((case-fold-search nil)
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(c-string (zone-cpos pos))
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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 " "))))
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(do ((i 0 (1+ i))
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(wait 0.5 (* wait 0.8)))
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((= 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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(sit-for wait))
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(delete-char -1) (insert c-string)))
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(defun zone-fall-through-ws (c col wend)
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(let ((fall-p nil) ; todo: move outward
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(wait 0.15)
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(o (point)) ; for terminals w/o cursor hiding
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(p (point)))
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(while (progn
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(forward-line 1)
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(move-to-column col)
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(looking-at " "))
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(setq fall-p t)
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(delete-char 1)
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(insert (if (< (point) wend) c " "))
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(save-excursion
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(goto-char p)
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(delete-char 1)
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(insert " ")
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(goto-char o)
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(sit-for (setq wait (* wait 0.8))))
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(setq p (1- (point))))
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fall-p))
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(defun zone-pgm-drip (&optional fret-p pancake-p)
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(let* ((ww (1- (window-width)))
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(wh (window-height))
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(mc 0) ; miss count
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(total (* ww wh))
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(fall-p nil))
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(goto-char (point-min))
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;; fill out rectangular ws block
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(while (not (eobp))
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(end-of-line)
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(let ((cc (current-column)))
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(if (< cc ww)
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(insert (make-string (- ww cc) ? ))
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(delete-char (- ww cc))))
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(unless (eobp)
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(forward-char 1)))
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;; what the hell is going on here?
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(let ((nl (- wh (count-lines (point-min) (point)))))
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(when (> nl 0)
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(let ((line (concat (make-string (1- ww) ? ) "\n")))
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(do ((i 0 (1+ i)))
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((= i nl))
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(insert line)))))
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;;
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(catch 'done ; ugh
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(while (not (input-pending-p))
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(goto-char (point-min))
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(sit-for 0)
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(let ((wbeg (window-start))
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(wend (window-end)))
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(setq mc 0)
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;; select non-ws character, but don't miss too much
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(goto-char (+ wbeg (random (- wend wbeg))))
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(while (looking-at "[ \n\f]")
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(if (= total (setq mc (1+ mc)))
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(throw 'done 'sel)
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(goto-char (+ wbeg (random (- wend wbeg))))))
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;; character animation sequence
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(let ((p (point)))
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(when fret-p (zone-fret p))
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(goto-char p)
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(setq fall-p (zone-fall-through-ws
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(zone-cpos p) (current-column) wend))))
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;; assuming current-column has not changed...
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(when (and pancake-p
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fall-p
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(< (count-lines (point-min) (point))
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wh))
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(previous-line 1)
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(forward-char 1)
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(sit-for 0.137)
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(delete-char -1)
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(insert "@")
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(sit-for 0.137)
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(delete-char -1)
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(insert "*")
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(sit-for 0.137)
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(delete-char -1)
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(insert "_"))))))
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(defun zone-pgm-drip-fretfully ()
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(zone-pgm-drip t))
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(defun zone-pgm-five-oclock-swan-dive ()
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(zone-pgm-drip nil t))
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(defun zone-pgm-martini-swan-dive ()
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(zone-pgm-drip t t))
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;;;; zone-pgm-paragraph-spaz
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(defun zone-pgm-paragraph-spaz ()
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(if (memq (zone-orig major-mode) '(text-mode fundamental-mode))
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(let ((fill-column fill-column)
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(fc-min fill-column)
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|
(fc-max fill-column)
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|
(max-fc (1- (frame-width))))
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(while (sit-for 0.1)
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|
(fill-paragraph 1)
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(setq fill-column (+ fill-column (- (random 5) 2)))
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(when (< fill-column fc-min)
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(setq fc-min fill-column))
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|
(when (> fill-column max-fc)
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|
(setq fill-column max-fc))
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|
(when (> fill-column fc-max)
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|
(setq fc-max fill-column))))
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(message "Zoning... (zone-pgm-rotate)")
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|
(zone-pgm-rotate)))
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|
|
|
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|
;;;; zone-pgm-stress
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|
|
|
(defun zone-pgm-stress ()
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|
(goto-char (point-min))
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|
(let (lines bg m-fg m-bg)
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|
(while (< (point) (point-max))
|
|
(let ((p (point)))
|
|
(forward-line 1)
|
|
(setq lines (cons (buffer-substring p (point)) lines))))
|
|
(sit-for 5)
|
|
(when (display-color-p)
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|
(setq bg (frame-parameter (selected-frame) 'background-color)
|
|
m-fg (face-foreground 'modeline)
|
|
m-bg (face-background 'modeline))
|
|
(set-face-foreground 'modeline bg)
|
|
(set-face-background 'modeline bg))
|
|
(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)
|
|
(let ((kill-whole-line t))
|
|
(kill-line))
|
|
(goto-char (point-min))
|
|
(insert (nth (random (length lines)) lines)))
|
|
(message (concat (make-string (random (- (frame-width) 5)) ? ) "grrr"))
|
|
(sit-for 0.1))
|
|
(when (display-color-p)
|
|
(set-face-foreground 'modeline m-fg)
|
|
(set-face-background 'modeline m-bg))))
|
|
|
|
(provide 'zone)
|
|
|
|
;;; zone.el ends here
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|
|