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3d43e48ad4
(gamegrid-add-score-with-update-game-score): Use `shared-game-score-directory'. Correctly handle non-setuid case.
505 lines
14 KiB
EmacsLisp
505 lines
14 KiB
EmacsLisp
;;; gamegrid.el --- library for implementing grid-based games on Emacs
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;; Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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;; Author: Glynn Clements <glynn@sensei.co.uk>
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;; Version: 1.02
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;; Created: 1997-08-13
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;; Keywords: games
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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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;;; Code:
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(eval-when-compile
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(require 'cl))
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;; ;;;;;;;;;;;;; buffer-local variables ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defvar gamegrid-use-glyphs t
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"Non-nil means use glyphs when available.")
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(defvar gamegrid-use-color t
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"Non-nil means use color when available.")
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(defvar gamegrid-font "-*-courier-medium-r-*-*-*-140-100-75-*-*-iso8859-*"
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"Name of the font used in X mode.")
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(defvar gamegrid-display-options nil)
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(defvar gamegrid-buffer-width 0)
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(defvar gamegrid-buffer-height 0)
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(defvar gamegrid-blank 0)
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(defvar gamegrid-timer nil)
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(defvar gamegrid-display-mode nil)
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(defvar gamegrid-display-table)
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(defvar gamegrid-face-table nil)
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(defvar gamegrid-buffer-start 1)
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(defvar gamegrid-score-file-length 50
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"Number of high scores to keep")
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(defvar gamegrid-user-score-file-directory "~/.emacs.d/games"
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"A directory for game scores which can't be shared.
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If Emacs was built without support for shared game scores, then this
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directory will be used.")
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(make-variable-buffer-local 'gamegrid-use-glyphs)
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(make-variable-buffer-local 'gamegrid-use-color)
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(make-variable-buffer-local 'gamegrid-font)
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(make-variable-buffer-local 'gamegrid-display-options)
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(make-variable-buffer-local 'gamegrid-buffer-width)
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(make-variable-buffer-local 'gamegrid-buffer-height)
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(make-variable-buffer-local 'gamegrid-blank)
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(make-variable-buffer-local 'gamegrid-timer)
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(make-variable-buffer-local 'gamegrid-display-mode)
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(make-variable-buffer-local 'gamegrid-display-table)
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(make-variable-buffer-local 'gamegrid-face-table)
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(make-variable-buffer-local 'gamegrid-buffer-start)
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(make-variable-buffer-local 'gamegrid-score-file-length)
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;; ;;;;;;;;;;;;; global variables ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defvar gamegrid-grid-x-face nil)
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(defvar gamegrid-mono-x-face nil)
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(defvar gamegrid-mono-tty-face nil)
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;; ;;;;;;;;;;;;; constants ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defconst gamegrid-glyph-height 16)
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(defconst gamegrid-xpm "\
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/* XPM */
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static char *noname[] = {
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/* width height ncolors chars_per_pixel */
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\"16 16 3 1\",
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/* colors */
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\"+ s col1\",
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\". s col2\",
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\"- s col3\",
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/* pixels */
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\"---------------+\",
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\"--------------++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"--............++\",
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\"-+++++++++++++++\",
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\"++++++++++++++++\"
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};
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"
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"XPM format image used for each square")
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;; ;;;;;;;;;;;;;;;; miscellaneous functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defsubst gamegrid-characterp (arg)
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(if (fboundp 'characterp)
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(characterp arg)
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(integerp arg)))
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(defsubst gamegrid-event-x (event)
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(if (fboundp 'event-x)
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(event-x event)
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(car (posn-col-row (event-end event)))))
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(defsubst gamegrid-event-y (event)
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(if (fboundp 'event-y)
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(event-y event)
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(cdr (posn-col-row (event-end event)))))
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;; ;;;;;;;;;;;;; display functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun gamegrid-color (color shade)
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(let* ((v (floor (* shade 255)))
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(r (* v (aref color 0)))
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(g (* v (aref color 1)))
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(b (* v (aref color 2))))
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(format "#%02x%02x%02x" r g b)))
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(defun gamegrid-set-font (face)
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(if gamegrid-font
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(condition-case nil
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(set-face-font face gamegrid-font)
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(error nil))))
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(defun gamegrid-setup-face (face color)
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(set-face-foreground face color)
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(set-face-background face color)
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(gamegrid-set-font face)
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(condition-case nil
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(set-face-background-pixmap face [nothing]);; XEmacs
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(error nil))
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(condition-case nil
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(set-face-background-pixmap face nil);; Emacs
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(error nil)))
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(defun gamegrid-make-mono-tty-face ()
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(let ((face (make-face 'gamegrid-mono-tty-face)))
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(condition-case nil
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(set-face-property face 'reverse t)
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(error nil))
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face))
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(defun gamegrid-make-color-tty-face (color)
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(let* ((color-str (symbol-value color))
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(name (intern (format "gamegrid-color-tty-face-%s" color-str)))
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(face (make-face name)))
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(gamegrid-setup-face face color-str)
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face))
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(defun gamegrid-make-grid-x-face ()
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(let ((face (make-face 'gamegrid-x-border-face)))
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(gamegrid-set-font face)
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face))
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(defun gamegrid-make-mono-x-face ()
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(let ((face (make-face 'gamegrid-mono-x-face))
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(color (face-foreground 'default)))
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(if (null color)
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(setq color
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(cdr-safe (assq 'foreground-color (frame-parameters)))))
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(gamegrid-setup-face face color)
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face))
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(defun gamegrid-make-color-x-face (color)
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(let* ((hex (gamegrid-color color 1.0))
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(name (intern (format "gamegrid-color-x-face-%s" hex)))
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(face (make-face name)))
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(gamegrid-setup-face face hex)
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face))
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(defun gamegrid-make-face (data-spec-list color-spec-list)
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(let ((data (gamegrid-match-spec-list data-spec-list))
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(color (gamegrid-match-spec-list color-spec-list)))
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(case data
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('color-x
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(gamegrid-make-color-x-face color))
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('grid-x
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(unless gamegrid-grid-x-face
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(setq gamegrid-grid-x-face (gamegrid-make-grid-x-face)))
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gamegrid-grid-x-face)
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('mono-x
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(unless gamegrid-mono-x-face
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(setq gamegrid-mono-x-face (gamegrid-make-mono-x-face)))
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gamegrid-mono-x-face)
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('color-tty
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(gamegrid-make-color-tty-face color))
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('mono-tty
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(unless gamegrid-mono-tty-face
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(setq gamegrid-mono-tty-face (gamegrid-make-mono-tty-face)))
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gamegrid-mono-tty-face))))
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(defun gamegrid-colorize-glyph (color)
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(make-glyph
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(vector
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'xpm
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:data gamegrid-xpm
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:color-symbols (list (cons "col1" (gamegrid-color color 0.6))
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(cons "col2" (gamegrid-color color 0.8))
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(cons "col3" (gamegrid-color color 1.0))))))
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(defun gamegrid-match-spec (spec)
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(let ((locale (car spec))
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(value (cadr spec)))
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(and (or (eq locale t)
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(and (listp locale)
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(memq gamegrid-display-mode locale))
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(and (symbolp locale)
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(eq gamegrid-display-mode locale)))
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value)))
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(defun gamegrid-match-spec-list (spec-list)
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(and spec-list
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(or (gamegrid-match-spec (car spec-list))
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(gamegrid-match-spec-list (cdr spec-list)))))
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(defun gamegrid-make-glyph (data-spec-list color-spec-list)
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(let ((data (gamegrid-match-spec-list data-spec-list))
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(color (gamegrid-match-spec-list color-spec-list)))
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(cond ((gamegrid-characterp data)
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(vector data))
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((eq data 'colorize)
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(gamegrid-colorize-glyph color))
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((vectorp data)
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(make-glyph data)))))
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(defun gamegrid-color-display-p ()
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(if (fboundp 'device-class)
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(eq (device-class (selected-device)) 'color)
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(eq (cdr-safe (assq 'display-type (frame-parameters))) 'color)))
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(defun gamegrid-display-type ()
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(let ((window-system-p
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(or (and (fboundp 'console-on-window-system-p)
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(console-on-window-system-p))
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(and (fboundp 'display-color-p)
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(display-color-p))
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window-system)))
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(cond ((and gamegrid-use-glyphs
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window-system-p
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(featurep 'xpm))
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'glyph)
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((and gamegrid-use-color
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window-system-p
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(gamegrid-color-display-p))
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'color-x)
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(window-system-p
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'mono-x)
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((and gamegrid-use-color
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(gamegrid-color-display-p))
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'color-tty)
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((fboundp 'set-face-property)
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'mono-tty)
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(t
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'emacs-tty))))
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(defun gamegrid-set-display-table ()
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(if (fboundp 'specifierp)
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(add-spec-to-specifier current-display-table
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gamegrid-display-table
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(current-buffer)
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nil
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'remove-locale)
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(setq buffer-display-table gamegrid-display-table)))
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(defun gamegrid-hide-cursor ()
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(if (fboundp 'specifierp)
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(set-specifier text-cursor-visible-p nil (current-buffer))))
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(defun gamegrid-setup-default-font ()
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(cond ((eq gamegrid-display-mode 'glyph)
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(let* ((font-spec (face-property 'default 'font))
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(name (font-name font-spec))
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(max-height nil))
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(loop for c from 0 to 255 do
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(let ((glyph (aref gamegrid-display-table c)))
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(cond ((glyphp glyph)
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(let ((height (glyph-height glyph)))
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(if (or (null max-height)
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(< max-height height))
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(setq max-height height)))))))
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(if max-height
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(while (and (> (font-height font-spec) max-height)
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(setq name (x-find-smaller-font name)))
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(add-spec-to-specifier font-spec name (current-buffer))))))))
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(defun gamegrid-initialize-display ()
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(setq gamegrid-display-mode (gamegrid-display-type))
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(setq gamegrid-display-table (make-display-table))
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(setq gamegrid-face-table (make-vector 256 nil))
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(loop for c from 0 to 255 do
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(let* ((spec (aref gamegrid-display-options c))
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(glyph (gamegrid-make-glyph (car spec) (caddr spec)))
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(face (gamegrid-make-face (cadr spec) (caddr spec))))
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(aset gamegrid-face-table c face)
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(aset gamegrid-display-table c glyph)))
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(gamegrid-setup-default-font)
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(gamegrid-set-display-table)
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(gamegrid-hide-cursor))
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(defun gamegrid-set-face (c)
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(unless (eq gamegrid-display-mode 'glyph)
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(put-text-property (1- (point))
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(point)
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'face
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(aref gamegrid-face-table c))))
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(defun gamegrid-cell-offset (x y)
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(+ gamegrid-buffer-start
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(* (1+ gamegrid-buffer-width) y)
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x))
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;; ;;;;;;;;;;;;;;;; grid functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun gamegrid-get-cell (x y)
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(char-after (gamegrid-cell-offset x y)))
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(defun gamegrid-set-cell (x y c)
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(save-excursion
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(let ((buffer-read-only nil))
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(goto-char (gamegrid-cell-offset x y))
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(delete-char 1)
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(insert-char c 1)
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(gamegrid-set-face c))))
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(defun gamegrid-init-buffer (width height blank)
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(setq gamegrid-buffer-width width
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gamegrid-buffer-height height)
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(let ((line (concat
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(make-string width blank)
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"\n"))
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(buffer-read-only nil))
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(erase-buffer)
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(setq gamegrid-buffer-start (point))
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(dotimes (i height)
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(insert line))
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(goto-char (point-min))))
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(defun gamegrid-init (options)
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(setq buffer-read-only t
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truncate-lines t
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gamegrid-display-options options)
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(buffer-disable-undo (current-buffer))
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(gamegrid-initialize-display))
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;; ;;;;;;;;;;;;;;;; timer functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun gamegrid-start-timer (period func)
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(setq gamegrid-timer
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(if (featurep 'itimer)
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(start-itimer "Gamegrid"
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func
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period
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period
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nil
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t
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(current-buffer))
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(run-with-timer period
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period
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func
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(current-buffer)))))
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(defun gamegrid-set-timer (delay)
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(if gamegrid-timer
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(if (featurep 'itimer)
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(set-itimer-restart gamegrid-timer delay)
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(timer-set-time gamegrid-timer
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(list (aref gamegrid-timer 1)
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(aref gamegrid-timer 2)
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(aref gamegrid-timer 3))
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delay))))
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(defun gamegrid-kill-timer ()
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(if gamegrid-timer
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(if (featurep 'itimer)
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(delete-itimer gamegrid-timer)
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(timer-set-time gamegrid-timer '(0 0 0) nil)))
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(setq gamegrid-timer nil))
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;; ;;;;;;;;;;;;;;; high score functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun gamegrid-add-score (file score)
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"Add the current score to the high score file."
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(case system-type
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((ms-dos windows-nt)
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(gamegrid-add-score-insecure file score))
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(t
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(gamegrid-add-score-with-update-game-score file score))))
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(defun gamegrid-add-score-with-update-game-score (file score)
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(let* ((result nil)
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(errbuf (generate-new-buffer " *update-game-score loss*"))
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(have-shared-game-dir
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(not (zerop (logand (file-modes
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(expand-file-name "update-game-score"
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exec-directory))
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#o4000))))
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(target (if have-shared-game-dir
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(expand-file-name file shared-game-score-directory)
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(let ((f (expand-file-name
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gamegrid-user-score-file-directory)))
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(when (file-writable-p f)
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(unless (eq (car-safe (file-attributes f))
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t)
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(make-directory f))
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(setq f (expand-file-name file f))
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(unless (file-exists-p f)
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(write-region "" nil f nil 'silent nil 'excl)))
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f))))
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(let ((default-directory "/"))
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(apply
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'call-process
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(append
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(list
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(expand-file-name "update-game-score" exec-directory)
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nil errbuf nil
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"-m" (int-to-string gamegrid-score-file-length)
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"-d" (if have-shared-game-dir
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(expand-file-name shared-game-score-directory)
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(file-name-directory target))
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file
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(int-to-string score)
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(concat
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(user-full-name)
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" <"
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(cond ((fboundp 'user-mail-address)
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(user-mail-address))
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((boundp 'user-mail-address)
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user-mail-address)
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(t ""))
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"> "
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(current-time-string))))))
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(if (buffer-modified-p errbuf)
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(progn
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(display-buffer errbuf)
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(error "Failed to update game score file"))
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(kill-buffer errbuf))
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(save-excursion
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(let ((buf (find-buffer-visiting target)))
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(if buf
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(progn
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(with-current-buffer buf
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(revert-buffer nil t nil))
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(display-buffer buf))
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(find-file-read-only-other-window target))))))
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(defun gamegrid-add-score-insecure (file score)
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(save-excursion
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(setq file (expand-file-name file temporary-file-directory))
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(find-file-other-window file)
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(setq buffer-read-only nil)
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(goto-char (point-max))
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(insert (format "%05d\t%s\t%s <%s>\n"
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score
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(current-time-string)
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(user-full-name)
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(cond ((fboundp 'user-mail-address)
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(user-mail-address))
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((boundp 'user-mail-address)
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user-mail-address)
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(t ""))))
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(sort-numeric-fields 1 (point-min) (point-max))
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(reverse-region (point-min) (point-max))
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(goto-line (1+ gamegrid-score-file-length))
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(delete-region (point) (point-max))
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(setq buffer-read-only t)
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(save-buffer)))
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;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(provide 'gamegrid)
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;;; gamegrid.el ends here
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