Commit | Line | Data |
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6e44da43 | 1 | ;;; gamegrid.el --- library for implementing grid-based games on Emacs |
3d4ae13e | 2 | |
73b0cd50 | 3 | ;; Copyright (C) 1997-1998, 2001-2011 Free Software Foundation, Inc. |
3d4ae13e RS |
4 | |
5 | ;; Author: Glynn Clements <glynn@sensei.co.uk> | |
6 | ;; Version: 1.02 | |
7 | ;; Created: 1997-08-13 | |
8 | ;; Keywords: games | |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
b1fc2b50 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
3d4ae13e | 13 | ;; it under the terms of the GNU General Public License as published by |
b1fc2b50 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
3d4ae13e RS |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b1fc2b50 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
3d4ae13e RS |
24 | |
25 | ;;; Commentary: | |
26 | ||
6e44da43 PJ |
27 | ;;; Code: |
28 | ||
3d4ae13e RS |
29 | (eval-when-compile |
30 | (require 'cl)) | |
31 | ||
32 | ;; ;;;;;;;;;;;;; buffer-local variables ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
33 | ||
34 | (defvar gamegrid-use-glyphs t | |
35 | "Non-nil means use glyphs when available.") | |
36 | ||
37 | (defvar gamegrid-use-color t | |
38 | "Non-nil means use color when available.") | |
39 | ||
40 | (defvar gamegrid-font "-*-courier-medium-r-*-*-*-140-100-75-*-*-iso8859-*" | |
41 | "Name of the font used in X mode.") | |
42 | ||
0f7df8ac RS |
43 | (defvar gamegrid-face nil |
44 | "Indicates the face to use as a default.") | |
45 | (make-variable-buffer-local 'gamegrid-face) | |
46 | ||
3d4ae13e RS |
47 | (defvar gamegrid-display-options nil) |
48 | ||
49 | (defvar gamegrid-buffer-width 0) | |
50 | (defvar gamegrid-buffer-height 0) | |
51 | (defvar gamegrid-blank 0) | |
52 | ||
53 | (defvar gamegrid-timer nil) | |
54 | ||
55 | (defvar gamegrid-display-mode nil) | |
56 | ||
57 | (defvar gamegrid-display-table) | |
58 | ||
59 | (defvar gamegrid-face-table nil) | |
60 | ||
61 | (defvar gamegrid-buffer-start 1) | |
62 | ||
63 | (defvar gamegrid-score-file-length 50 | |
ea6c930a | 64 | "Number of high scores to keep.") |
3d4ae13e | 65 | |
23afd1c8 | 66 | (defvar gamegrid-user-score-file-directory |
d6c180c4 | 67 | (locate-user-emacs-file "games/") |
3d43e48a CW |
68 | "A directory for game scores which can't be shared. |
69 | If Emacs was built without support for shared game scores, then this | |
70 | directory will be used.") | |
71 | ||
3d4ae13e RS |
72 | (make-variable-buffer-local 'gamegrid-use-glyphs) |
73 | (make-variable-buffer-local 'gamegrid-use-color) | |
74 | (make-variable-buffer-local 'gamegrid-font) | |
75 | (make-variable-buffer-local 'gamegrid-display-options) | |
76 | (make-variable-buffer-local 'gamegrid-buffer-width) | |
77 | (make-variable-buffer-local 'gamegrid-buffer-height) | |
78 | (make-variable-buffer-local 'gamegrid-blank) | |
79 | (make-variable-buffer-local 'gamegrid-timer) | |
80 | (make-variable-buffer-local 'gamegrid-display-mode) | |
81 | (make-variable-buffer-local 'gamegrid-display-table) | |
82 | (make-variable-buffer-local 'gamegrid-face-table) | |
83 | (make-variable-buffer-local 'gamegrid-buffer-start) | |
84 | (make-variable-buffer-local 'gamegrid-score-file-length) | |
85 | ||
86 | ;; ;;;;;;;;;;;;; global variables ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
87 | ||
88 | (defvar gamegrid-grid-x-face nil) | |
89 | (defvar gamegrid-mono-x-face nil) | |
90 | (defvar gamegrid-mono-tty-face nil) | |
91 | ||
92 | ;; ;;;;;;;;;;;;; constants ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
93 | ||
94 | (defconst gamegrid-glyph-height 16) | |
95 | ||
96 | (defconst gamegrid-xpm "\ | |
97 | /* XPM */ | |
98 | static char *noname[] = { | |
99 | /* width height ncolors chars_per_pixel */ | |
100 | \"16 16 3 1\", | |
101 | /* colors */ | |
102 | \"+ s col1\", | |
103 | \". s col2\", | |
104 | \"- s col3\", | |
105 | /* pixels */ | |
106 | \"---------------+\", | |
107 | \"--------------++\", | |
108 | \"--............++\", | |
109 | \"--............++\", | |
110 | \"--............++\", | |
111 | \"--............++\", | |
112 | \"--............++\", | |
113 | \"--............++\", | |
114 | \"--............++\", | |
115 | \"--............++\", | |
116 | \"--............++\", | |
117 | \"--............++\", | |
118 | \"--............++\", | |
119 | \"--............++\", | |
120 | \"-+++++++++++++++\", | |
121 | \"++++++++++++++++\" | |
122 | }; | |
123 | " | |
124 | "XPM format image used for each square") | |
125 | ||
0f7df8ac RS |
126 | (defvar gamegrid-xbm "\ |
127 | /* gamegrid XBM */ | |
128 | #define gamegrid_width 16 | |
129 | #define gamegrid_height 16 | |
130 | static unsigned char gamegrid_bits[] = { | |
131 | 0xff, 0xff, 0xff, 0x7f, 0xff, 0x3f, 0xaf, 0x0a, 0x57, 0x15, 0xaf, 0x0a, | |
132 | 0x57, 0x15, 0xaf, 0x0a, 0x57, 0x15, 0xaf, 0x0a, 0x57, 0x15, 0xaf, 0x0a, | |
133 | 0x57, 0x15, 0x07, 0x00, 0x03, 0x00, 0x01, 0x00 };" | |
134 | "XBM format image used for each square.") | |
135 | ||
3d4ae13e RS |
136 | ;; ;;;;;;;;;;;;;;;; miscellaneous functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
137 | ||
138 | (defsubst gamegrid-characterp (arg) | |
139 | (if (fboundp 'characterp) | |
140 | (characterp arg) | |
141 | (integerp arg))) | |
142 | ||
143 | (defsubst gamegrid-event-x (event) | |
144 | (if (fboundp 'event-x) | |
145 | (event-x event) | |
146 | (car (posn-col-row (event-end event))))) | |
147 | ||
148 | (defsubst gamegrid-event-y (event) | |
149 | (if (fboundp 'event-y) | |
150 | (event-y event) | |
151 | (cdr (posn-col-row (event-end event))))) | |
152 | ||
153 | ;; ;;;;;;;;;;;;; display functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
154 | ||
155 | (defun gamegrid-color (color shade) | |
156 | (let* ((v (floor (* shade 255))) | |
157 | (r (* v (aref color 0))) | |
158 | (g (* v (aref color 1))) | |
159 | (b (* v (aref color 2)))) | |
160 | (format "#%02x%02x%02x" r g b))) | |
161 | ||
162 | (defun gamegrid-set-font (face) | |
163 | (if gamegrid-font | |
164 | (condition-case nil | |
165 | (set-face-font face gamegrid-font) | |
279b254c | 166 | (error nil)))) |
3d4ae13e RS |
167 | |
168 | (defun gamegrid-setup-face (face color) | |
169 | (set-face-foreground face color) | |
170 | (set-face-background face color) | |
171 | (gamegrid-set-font face) | |
172 | (condition-case nil | |
173 | (set-face-background-pixmap face [nothing]);; XEmacs | |
279b254c | 174 | (error nil)) |
3d4ae13e RS |
175 | (condition-case nil |
176 | (set-face-background-pixmap face nil);; Emacs | |
279b254c | 177 | (error nil))) |
3d4ae13e RS |
178 | |
179 | (defun gamegrid-make-mono-tty-face () | |
180 | (let ((face (make-face 'gamegrid-mono-tty-face))) | |
bf7f684c | 181 | (set-face-inverse-video-p face t) |
3d4ae13e RS |
182 | face)) |
183 | ||
184 | (defun gamegrid-make-color-tty-face (color) | |
a5bce90d | 185 | (let* ((color-str (if (symbolp color) (symbol-value color) color)) |
c7e6cdba | 186 | (name (intern (format "gamegrid-color-tty-face-%s" color-str))) |
3d4ae13e | 187 | (face (make-face name))) |
c7e6cdba | 188 | (gamegrid-setup-face face color-str) |
3d4ae13e RS |
189 | face)) |
190 | ||
191 | (defun gamegrid-make-grid-x-face () | |
192 | (let ((face (make-face 'gamegrid-x-border-face))) | |
193 | (gamegrid-set-font face) | |
194 | face)) | |
195 | ||
196 | (defun gamegrid-make-mono-x-face () | |
197 | (let ((face (make-face 'gamegrid-mono-x-face)) | |
198 | (color (face-foreground 'default))) | |
199 | (if (null color) | |
200 | (setq color | |
201 | (cdr-safe (assq 'foreground-color (frame-parameters))))) | |
202 | (gamegrid-setup-face face color) | |
203 | face)) | |
204 | ||
205 | (defun gamegrid-make-color-x-face (color) | |
206 | (let* ((hex (gamegrid-color color 1.0)) | |
207 | (name (intern (format "gamegrid-color-x-face-%s" hex))) | |
208 | (face (make-face name))) | |
c7e6cdba | 209 | (gamegrid-setup-face face hex) |
3d4ae13e RS |
210 | face)) |
211 | ||
212 | (defun gamegrid-make-face (data-spec-list color-spec-list) | |
213 | (let ((data (gamegrid-match-spec-list data-spec-list)) | |
214 | (color (gamegrid-match-spec-list color-spec-list))) | |
215 | (case data | |
0adf5618 | 216 | (color-x |
3d4ae13e | 217 | (gamegrid-make-color-x-face color)) |
0adf5618 | 218 | (grid-x |
3d4ae13e RS |
219 | (unless gamegrid-grid-x-face |
220 | (setq gamegrid-grid-x-face (gamegrid-make-grid-x-face))) | |
221 | gamegrid-grid-x-face) | |
0adf5618 | 222 | (mono-x |
3d4ae13e RS |
223 | (unless gamegrid-mono-x-face |
224 | (setq gamegrid-mono-x-face (gamegrid-make-mono-x-face))) | |
225 | gamegrid-mono-x-face) | |
0adf5618 | 226 | (color-tty |
3d4ae13e | 227 | (gamegrid-make-color-tty-face color)) |
0adf5618 | 228 | (mono-tty |
3d4ae13e RS |
229 | (unless gamegrid-mono-tty-face |
230 | (setq gamegrid-mono-tty-face (gamegrid-make-mono-tty-face))) | |
231 | gamegrid-mono-tty-face)))) | |
232 | ||
233 | (defun gamegrid-colorize-glyph (color) | |
0f7df8ac RS |
234 | (find-image `((:type xpm :data ,gamegrid-xpm |
235 | :ascent center | |
a1506d29 | 236 | :color-symbols |
0f7df8ac RS |
237 | (("col1" . ,(gamegrid-color color 0.6)) |
238 | ("col2" . ,(gamegrid-color color 0.8)) | |
239 | ("col3" . ,(gamegrid-color color 1.0)))) | |
240 | (:type xbm :data ,gamegrid-xbm | |
241 | :ascent center | |
242 | :foreground ,(gamegrid-color color 1.0) | |
243 | :background ,(gamegrid-color color 0.5))))) | |
3d4ae13e RS |
244 | |
245 | (defun gamegrid-match-spec (spec) | |
246 | (let ((locale (car spec)) | |
247 | (value (cadr spec))) | |
248 | (and (or (eq locale t) | |
249 | (and (listp locale) | |
250 | (memq gamegrid-display-mode locale)) | |
251 | (and (symbolp locale) | |
252 | (eq gamegrid-display-mode locale))) | |
253 | value))) | |
254 | ||
255 | (defun gamegrid-match-spec-list (spec-list) | |
256 | (and spec-list | |
257 | (or (gamegrid-match-spec (car spec-list)) | |
258 | (gamegrid-match-spec-list (cdr spec-list))))) | |
259 | ||
260 | (defun gamegrid-make-glyph (data-spec-list color-spec-list) | |
261 | (let ((data (gamegrid-match-spec-list data-spec-list)) | |
262 | (color (gamegrid-match-spec-list color-spec-list))) | |
263 | (cond ((gamegrid-characterp data) | |
264 | (vector data)) | |
265 | ((eq data 'colorize) | |
266 | (gamegrid-colorize-glyph color)) | |
0f7df8ac RS |
267 | ((listp data) |
268 | (find-image data)) ;untested! | |
3d4ae13e | 269 | ((vectorp data) |
0f7df8ac | 270 | (gamegrid-make-image-from-vector data))))) |
3d4ae13e | 271 | |
0f7df8ac RS |
272 | (defun gamegrid-make-image-from-vector (vect) |
273 | "Convert an XEmacs style \"glyph\" to an image-spec." | |
274 | (let ((l (list 'image :type))) | |
275 | (dotimes (n (length vect)) | |
276 | (setf l (nconc l (list (aref vect n))))) | |
277 | (nconc l (list :ascent 'center)))) | |
3d4ae13e RS |
278 | |
279 | (defun gamegrid-display-type () | |
0f7df8ac RS |
280 | (cond ((and gamegrid-use-glyphs |
281 | (display-images-p)) | |
282 | 'glyph) | |
283 | ((and gamegrid-use-color | |
284 | (display-graphic-p) | |
285 | (display-color-p)) | |
286 | 'color-x) | |
287 | ((display-graphic-p) | |
288 | 'mono-x) | |
289 | ((and gamegrid-use-color | |
290 | (display-color-p)) | |
291 | 'color-tty) | |
292 | ((display-multi-font-p) ;??? | |
293 | 'mono-tty) | |
294 | (t | |
295 | 'emacs-tty))) | |
3d4ae13e RS |
296 | |
297 | (defun gamegrid-set-display-table () | |
bf7f684c | 298 | (if (featurep 'xemacs) |
3d4ae13e RS |
299 | (add-spec-to-specifier current-display-table |
300 | gamegrid-display-table | |
301 | (current-buffer) | |
302 | nil | |
303 | 'remove-locale) | |
304 | (setq buffer-display-table gamegrid-display-table))) | |
305 | ||
aa360da1 GM |
306 | (declare-function image-size "image.c" (spec &optional pixels frame)) |
307 | ||
3d4ae13e | 308 | (defun gamegrid-setup-default-font () |
0f7df8ac RS |
309 | (setq gamegrid-face |
310 | (copy-face 'default | |
311 | (intern (concat "gamegrid-face-" (buffer-name))))) | |
312 | (when (eq gamegrid-display-mode 'glyph) | |
313 | (let ((max-height nil)) | |
314 | (loop for c from 0 to 255 do | |
315 | (let ((glyph (aref gamegrid-display-table c))) | |
316 | (when (and (listp glyph) (eq (car glyph) 'image)) | |
317 | (let ((height (cdr (image-size glyph)))) | |
318 | (if (or (null max-height) | |
319 | (< max-height height)) | |
320 | (setq max-height height)))))) | |
321 | (when (and max-height (< max-height 1)) | |
34764b73 KH |
322 | (let ((default-font-height (face-attribute 'default :height)) |
323 | (resy (/ (display-pixel-height) (/ (display-mm-height) 25.4))) | |
324 | point-size pixel-size) | |
325 | (setq point-size (/ (* (float default-font-height) max-height) 10) | |
326 | pixel-size (floor (* resy (/ point-size 72.27))) | |
327 | point-size (* (/ pixel-size resy) 72.27)) | |
c73bd236 MB |
328 | (face-spec-set gamegrid-face |
329 | `((t :height ,(floor (* point-size 10)))))))))) | |
3d4ae13e RS |
330 | |
331 | (defun gamegrid-initialize-display () | |
332 | (setq gamegrid-display-mode (gamegrid-display-type)) | |
333 | (setq gamegrid-display-table (make-display-table)) | |
334 | (setq gamegrid-face-table (make-vector 256 nil)) | |
335 | (loop for c from 0 to 255 do | |
336 | (let* ((spec (aref gamegrid-display-options c)) | |
337 | (glyph (gamegrid-make-glyph (car spec) (caddr spec))) | |
338 | (face (gamegrid-make-face (cadr spec) (caddr spec)))) | |
339 | (aset gamegrid-face-table c face) | |
340 | (aset gamegrid-display-table c glyph))) | |
341 | (gamegrid-setup-default-font) | |
342 | (gamegrid-set-display-table) | |
0f7df8ac | 343 | (setq cursor-type nil)) |
3d4ae13e RS |
344 | |
345 | ||
346 | (defun gamegrid-set-face (c) | |
0f7df8ac RS |
347 | (if (eq gamegrid-display-mode 'glyph) |
348 | (add-text-properties (1- (point)) (point) | |
349 | (list 'display (list (aref gamegrid-display-table c)))) | |
3d4ae13e RS |
350 | (put-text-property (1- (point)) |
351 | (point) | |
352 | 'face | |
353 | (aref gamegrid-face-table c)))) | |
354 | ||
355 | (defun gamegrid-cell-offset (x y) | |
356 | (+ gamegrid-buffer-start | |
357 | (* (1+ gamegrid-buffer-width) y) | |
358 | x)) | |
359 | ||
360 | ;; ;;;;;;;;;;;;;;;; grid functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
361 | ||
362 | (defun gamegrid-get-cell (x y) | |
363 | (char-after (gamegrid-cell-offset x y))) | |
364 | ||
365 | (defun gamegrid-set-cell (x y c) | |
366 | (save-excursion | |
367 | (let ((buffer-read-only nil)) | |
368 | (goto-char (gamegrid-cell-offset x y)) | |
369 | (delete-char 1) | |
370 | (insert-char c 1) | |
371 | (gamegrid-set-face c)))) | |
372 | ||
373 | (defun gamegrid-init-buffer (width height blank) | |
374 | (setq gamegrid-buffer-width width | |
375 | gamegrid-buffer-height height) | |
376 | (let ((line (concat | |
377 | (make-string width blank) | |
378 | "\n")) | |
379 | (buffer-read-only nil)) | |
380 | (erase-buffer) | |
381 | (setq gamegrid-buffer-start (point)) | |
382 | (dotimes (i height) | |
8b78491a | 383 | (insert line)) |
0f7df8ac RS |
384 | ;; Adjust the height of the default face to the height of the |
385 | ;; images. Unlike XEmacs, Emacs doesn't allow to make the default | |
386 | ;; face buffer-local; so we do this with an overlay. | |
387 | (when (eq gamegrid-display-mode 'glyph) | |
388 | (overlay-put (make-overlay (point-min) (point-max)) | |
389 | 'face gamegrid-face)) | |
3d4ae13e RS |
390 | (goto-char (point-min)))) |
391 | ||
392 | (defun gamegrid-init (options) | |
393 | (setq buffer-read-only t | |
394 | truncate-lines t | |
82dd78a8 | 395 | line-spacing 0 |
3d4ae13e RS |
396 | gamegrid-display-options options) |
397 | (buffer-disable-undo (current-buffer)) | |
398 | (gamegrid-initialize-display)) | |
399 | ||
400 | ;; ;;;;;;;;;;;;;;;; timer functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
401 | ||
402 | (defun gamegrid-start-timer (period func) | |
403 | (setq gamegrid-timer | |
399f21c1 | 404 | (if (featurep 'xemacs) |
3d4ae13e RS |
405 | (start-itimer "Gamegrid" |
406 | func | |
407 | period | |
408 | period | |
409 | nil | |
410 | t | |
411 | (current-buffer)) | |
412 | (run-with-timer period | |
413 | period | |
414 | func | |
415 | (current-buffer))))) | |
416 | ||
417 | (defun gamegrid-set-timer (delay) | |
418 | (if gamegrid-timer | |
bf7f684c | 419 | (if (fboundp 'set-itimer-restart) |
3d4ae13e RS |
420 | (set-itimer-restart gamegrid-timer delay) |
421 | (timer-set-time gamegrid-timer | |
422 | (list (aref gamegrid-timer 1) | |
423 | (aref gamegrid-timer 2) | |
424 | (aref gamegrid-timer 3)) | |
425 | delay)))) | |
426 | ||
427 | (defun gamegrid-kill-timer () | |
428 | (if gamegrid-timer | |
399f21c1 | 429 | (if (featurep 'xemacs) |
3d4ae13e | 430 | (delete-itimer gamegrid-timer) |
d33ca4d4 | 431 | (cancel-timer gamegrid-timer))) |
3d4ae13e RS |
432 | (setq gamegrid-timer nil)) |
433 | ||
434 | ;; ;;;;;;;;;;;;;;; high score functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
435 | ||
436 | (defun gamegrid-add-score (file score) | |
f9d56d59 JB |
437 | "Add the current score to the high score file. |
438 | ||
439 | On POSIX systems there may be a shared game directory for all users in | |
ea6c930a JB |
440 | which the scorefiles are kept. On such systems Emacs doesn't create |
441 | the score file FILE in this directory, if it doesn't already exist. | |
442 | In this case Emacs searches for FILE in the directory specified by | |
f9d56d59 JB |
443 | `gamegrid-user-score-file-directory' and creates it there, if |
444 | necessary. | |
445 | ||
446 | To add the score file for a game to the system wide shared game | |
447 | directory, create the file with the shell command \"touch\" in this | |
448 | directory and make sure that it is owned by the correct user and | |
ea6c930a | 449 | group. You probably need special user privileges to do this. |
f9d56d59 JB |
450 | |
451 | On non-POSIX systems Emacs searches for FILE in the directory | |
ea6c930a | 452 | specified by the variable `temporary-file-directory'. If necessary, |
f9d56d59 | 453 | FILE is created there." |
744ee133 CW |
454 | (case system-type |
455 | ((ms-dos windows-nt) | |
456 | (gamegrid-add-score-insecure file score)) | |
457 | (t | |
458 | (gamegrid-add-score-with-update-game-score file score)))) | |
459 | ||
f62ebc65 JB |
460 | |
461 | ;; On POSIX systems there are four cases to distinguish: | |
462 | ||
463 | ;; 1. FILE is an absolute filename. Then it should be a file in | |
464 | ;; temporary file directory. This is the way, | |
465 | ;; `gamegrid-add-score' was supposed to be used in the past and | |
466 | ;; is covered here for backward-compatibility. | |
467 | ;; | |
468 | ;; 2. The helper program "update-game-score" is setuid and the | |
469 | ;; file FILE does already exist in a system wide shared game | |
470 | ;; directory. This should be the normal case on POSIX systems, | |
471 | ;; if the game was installed system wide. Use | |
472 | ;; "update-game-score" to add the score to the file in the | |
473 | ;; shared game directory. | |
474 | ;; | |
475 | ;; 3. "update-game-score" is setuid, but the file FILE does *not* | |
476 | ;; exist in the system wide shared game directory. Use | |
477 | ;; `gamegrid-add-score-insecure' to create--if necessary--and | |
478 | ;; update FILE. This is for the case that a user has installed | |
479 | ;; a game on her own. | |
480 | ;; | |
481 | ;; 4. "update-game-score" is not setuid. Use it to create/update | |
482 | ;; FILE in the user's home directory. There is presumably no | |
483 | ;; shared game directory. | |
484 | ||
bf7f684c RS |
485 | (defvar gamegrid-shared-game-dir) |
486 | ||
744ee133 | 487 | (defun gamegrid-add-score-with-update-game-score (file score) |
121656e9 JB |
488 | (let ((gamegrid-shared-game-dir |
489 | (not (zerop (logand (file-modes | |
490 | (expand-file-name "update-game-score" | |
491 | exec-directory)) | |
492 | #o4000))))) | |
f62ebc65 JB |
493 | (cond ((file-name-absolute-p file) |
494 | (gamegrid-add-score-insecure file score)) | |
bf7f684c | 495 | ((and gamegrid-shared-game-dir |
f62ebc65 JB |
496 | (file-exists-p (expand-file-name file shared-game-score-directory))) |
497 | ;; Use the setuid "update-game-score" program to update a | |
498 | ;; system-wide score file. | |
bf7f684c | 499 | (gamegrid-add-score-with-update-game-score-1 file |
f62ebc65 JB |
500 | (expand-file-name file shared-game-score-directory) score)) |
501 | ;; Else: Add the score to a score file in the user's home | |
502 | ;; directory. | |
bf7f684c RS |
503 | (gamegrid-shared-game-dir |
504 | ;; If `gamegrid-shared-game-dir' is non-nil, then | |
f62ebc65 JB |
505 | ;; "update-gamescore" program is setuid, so don't use it. |
506 | (unless (file-exists-p | |
507 | (directory-file-name gamegrid-user-score-file-directory)) | |
508 | (make-directory gamegrid-user-score-file-directory t)) | |
509 | (gamegrid-add-score-insecure file score | |
510 | gamegrid-user-score-file-directory)) | |
511 | (t (let ((f (expand-file-name | |
512 | gamegrid-user-score-file-directory))) | |
513 | (when (file-writable-p f) | |
514 | (unless (eq (car-safe (file-attributes f)) | |
515 | t) | |
516 | (make-directory f)) | |
517 | (setq f (expand-file-name file f)) | |
518 | (unless (file-exists-p f) | |
519 | (write-region "" nil f nil 'silent nil 'excl))) | |
bf7f684c | 520 | (gamegrid-add-score-with-update-game-score-1 file f score)))))) |
f9d56d59 | 521 | |
bf7f684c | 522 | (defun gamegrid-add-score-with-update-game-score-1 (file target score) |
f9d56d59 | 523 | (let ((default-directory "/") |
94430ab7 EZ |
524 | (errbuf (generate-new-buffer " *update-game-score loss*")) |
525 | (marker-string (concat | |
526 | (user-full-name) | |
527 | " <" | |
528 | (cond ((fboundp 'user-mail-address) | |
529 | (user-mail-address)) | |
530 | ((boundp 'user-mail-address) | |
531 | user-mail-address) | |
532 | (t "")) | |
533 | "> " | |
534 | (current-time-string)))) | |
d33ca4d4 CY |
535 | ;; This can be called from a timer, so enable local quits. |
536 | (with-local-quit | |
537 | (apply | |
538 | 'call-process | |
539 | (append | |
540 | (list | |
541 | (expand-file-name "update-game-score" exec-directory) | |
542 | nil errbuf nil | |
543 | "-m" (int-to-string gamegrid-score-file-length) | |
544 | "-d" (if gamegrid-shared-game-dir | |
545 | (expand-file-name shared-game-score-directory) | |
546 | (file-name-directory target)) | |
547 | file | |
548 | (int-to-string score) | |
94430ab7 | 549 | marker-string)))) |
dcec69ee CW |
550 | (if (buffer-modified-p errbuf) |
551 | (progn | |
552 | (display-buffer errbuf) | |
553 | (error "Failed to update game score file")) | |
554 | (kill-buffer errbuf)) | |
d33ca4d4 | 555 | (let ((buf (find-buffer-visiting target))) |
94430ab7 EZ |
556 | (save-excursion |
557 | (if buf | |
558 | (progn | |
559 | (switch-to-buffer buf) | |
560 | (revert-buffer nil t nil) | |
561 | (display-buffer buf)) | |
562 | (find-file-read-only target)) | |
563 | (goto-char (point-min)) | |
564 | (search-forward (concat (int-to-string score) | |
565 | " " (user-login-name) " " | |
566 | marker-string)) | |
567 | (beginning-of-line))))) | |
80f60ab4 | 568 | |
f9d56d59 | 569 | (defun gamegrid-add-score-insecure (file score &optional directory) |
744ee133 | 570 | (save-excursion |
f9d56d59 JB |
571 | (setq file (expand-file-name file (or directory |
572 | temporary-file-directory))) | |
744ee133 CW |
573 | (find-file-other-window file) |
574 | (setq buffer-read-only nil) | |
575 | (goto-char (point-max)) | |
576 | (insert (format "%05d\t%s\t%s <%s>\n" | |
577 | score | |
578 | (current-time-string) | |
579 | (user-full-name) | |
580 | (cond ((fboundp 'user-mail-address) | |
581 | (user-mail-address)) | |
582 | ((boundp 'user-mail-address) | |
583 | user-mail-address) | |
584 | (t "")))) | |
cbfbd37d | 585 | (sort-fields 1 (point-min) (point-max)) |
744ee133 | 586 | (reverse-region (point-min) (point-max)) |
e6ce8c42 GM |
587 | (goto-char (point-min)) |
588 | (forward-line gamegrid-score-file-length) | |
744ee133 CW |
589 | (delete-region (point) (point-max)) |
590 | (setq buffer-read-only t) | |
591 | (save-buffer))) | |
592 | ||
3d4ae13e RS |
593 | |
594 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
595 | ||
596 | (provide 'gamegrid) | |
6e44da43 PJ |
597 | |
598 | ;;; gamegrid.el ends here |