source: mainline/uspace/app/tetris/tetris.c@ ae55ee8

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since ae55ee8 was 6eb2e96, checked in by Jiri Svoboda <jirik.svoboda@…>, 17 years ago

str_cpy() and str_ncpy() in userspace. Nuke strcpy() and strncpy().
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File size: 9.6 KB
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1/* $OpenBSD: tetris.c,v 1.21 2006/04/20 03:24:12 ray Exp $ */
2/* $NetBSD: tetris.c,v 1.2 1995/04/22 07:42:47 cgd Exp $ */
3
4/*-
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Chris Torek and Darren F. Provine.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)tetris.c 8.1 (Berkeley) 5/31/93
36 */
37
38/** @addtogroup tetris Tetris
39 * @brief Tetris ported from OpenBSD
40 * @{
41 */
42/** @file
43 */
44
45#ifndef lint
46static const char copyright[] =
47"@(#) Copyright (c) 1992, 1993\n\
48 The Regents of the University of California. All rights reserved.\n";
49#endif /* not lint */
50
51/*
52 * Tetris (or however it is spelled).
53 */
54
55#include <sys/time.h>
56#include <sys/types.h>
57
58#include <err.h>
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62#include <unistd.h>
63
64#include "input.h"
65#include "scores.h"
66#include "screen.h"
67#include "tetris.h"
68
69cell board[B_SIZE];
70int Rows, Cols;
71const struct shape *curshape;
72const struct shape *nextshape;
73long fallrate;
74int score;
75//gid_t gid, egid;
76char key_msg[100];
77int showpreview, classic;
78
79static void elide(void);
80static void setup_board(void);
81const struct shape *randshape(void);
82void onintr(int);
83void usage(void);
84
85/*
86 * Set up the initial board. The bottom display row is completely set,
87 * along with another (hidden) row underneath that. Also, the left and
88 * right edges are set.
89 */
90static void
91setup_board(void)
92{
93 int i;
94 cell *p;
95
96 p = board;
97 for (i = B_SIZE; i; i--)
98 *p++ = i <= (2 * B_COLS) || (i % B_COLS) < 2;
99}
100
101/*
102 * Elide any full active rows.
103 */
104static void
105elide(void)
106{
107 int rows = 0;
108 int i, j, base;
109 cell *p;
110
111 for (i = A_FIRST; i < A_LAST; i++) {
112 base = i * B_COLS + 1;
113 p = &board[base];
114 for (j = B_COLS - 2; *p++ != 0;) {
115 if (--j <= 0) {
116 /* this row is to be elided */
117 rows++;
118 memset(&board[base], 0, B_COLS - 2);
119 scr_update();
120 tsleep();
121 while (--base != 0)
122 board[base + B_COLS] = board[base];
123 scr_update();
124 tsleep();
125 break;
126 }
127 }
128 }
129 switch (rows) {
130 case 1:
131 score += 10;
132 break;
133 case 2:
134 score += 30;
135 break;
136 case 3:
137 score += 70;
138 break;
139 case 4:
140 score += 150;
141 break;
142 default:
143 break;
144 }
145}
146
147const struct shape *
148randshape(void)
149{
150 const struct shape *tmp;
151 int i, j;
152
153 tmp = &shapes[random() % 7];
154 j = random() % 4;
155 for (i = 0; i < j; i++)
156 tmp = &shapes[classic? tmp->rotc : tmp->rot];
157 return (tmp);
158}
159
160static void srandomdev(void)
161{
162 struct timeval tv;
163
164 gettimeofday(&tv, NULL);
165 srandom(tv.tv_sec + tv.tv_usec / 100000);
166}
167
168static void tetris_menu_draw(int level)
169{
170 clear_screen();
171 moveto(5,10);
172 puts("Tetris\n\n");
173
174 moveto(8,10);
175 printf("Level = %d (press keys 1 - 9 to change)",level);
176 moveto(9,10);
177 printf("Preview is %s (press 'p' to change)", (showpreview?"on ":"off"));
178 moveto(12,10);
179 printf("Press 'h' to show hiscore table.");
180 moveto(13,10);
181 printf("Press 's' to start game.");
182 moveto(14,10);
183 printf("Press 'q' to quit game.");
184 moveto(20,10);
185 printf("In game controls:");
186 moveto(21,0);
187 puts(key_msg);
188}
189
190static int tetris_menu(int *level)
191{
192 static int firstgame = 1;
193 int i;
194/* if (showpreview == 0)
195 (void)printf("Your score: %d point%s x level %d = %d\n",
196 score, score == 1 ? "" : "s", level, score * level);
197 else {
198 (void)printf("Your score: %d point%s x level %d x preview penalty %0.3f = %d\n",
199 score, score == 1 ? "" : "s", level, (double)PRE_PENALTY,
200 (int)(score * level * PRE_PENALTY));
201 score = score * PRE_PENALTY;
202 }
203 savescore(level);
204
205 showscores(level);
206
207 printf("\nHit 's' to new game, 'q' to quit.\n");
208*/
209 tetris_menu_draw(*level);
210 while (1) {
211
212 i = getchar();
213
214 switch(i) {
215 case 'p':
216 showpreview = !showpreview;
217 moveto(9,21);
218 if (showpreview)
219 printf("on ");
220 else
221 printf("off");
222
223 break;
224 case 'h':
225 showscores(firstgame);
226 tetris_menu_draw(*level);
227 break;
228 case 's':
229 firstgame = 0;
230 return 1;
231 case 'q':
232 return 0;
233 case '1':
234 case '2':
235 case '3':
236 case '4':
237 case '5':
238 case '6':
239 case '7':
240 case '8':
241 case '9':
242 *level = i - '0';
243 moveto(8,18);
244 printf("%d", *level);
245 break;
246 }
247 }
248
249}
250
251int
252main(int argc, char *argv[])
253{
254 int pos, c;
255 char *keys;
256 int level = 2;
257 char key_write[6][10];
258 int i, j;
259
260 keys = "jkl pq";
261
262// gid = getgid();
263// egid = getegid();
264// setegid(gid);
265
266 classic = 0;
267 showpreview = 1;
268
269/* while ((ch = getopt(argc, argv, "ck:l:ps")) != -1) */
270/* switch(ch) { */
271/* case 'c': */
272/* /\* */
273/* * this means: */
274/* * - rotate the other way; */
275/* * - no reverse video. */
276/* *\/ */
277/* classic = 1; */
278/* break; */
279/* case 'k': */
280/* if (str_size(keys = optarg) != 6) */
281/* usage(); */
282/* break; */
283/* case 'l': */
284/* level = (int)strtonum(optarg, MINLEVEL, MAXLEVEL, */
285/* &errstr); */
286/* if (errstr) */
287/* errx(1, "level must be from %d to %d", */
288/* MINLEVEL, MAXLEVEL); */
289/* break; */
290/* case 'p': */
291/* showpreview = 1; */
292/* break; */
293/* case 's': */
294/* showscores(0); */
295/* exit(0); */
296/* default: */
297/* usage(); */
298/* } */
299
300/* argc -= optind; */
301/* argv += optind; */
302
303/* if (argc) */
304/* usage(); */
305
306
307
308 for (i = 0; i <= 5; i++) {
309 for (j = i+1; j <= 5; j++) {
310 if (keys[i] == keys[j])
311 errx(1, "duplicate command keys specified.");
312 }
313 if (keys[i] == ' ')
314 str_cpy(key_write[i], sizeof key_write[i], "<space>");
315 else {
316 key_write[i][0] = keys[i];
317 key_write[i][1] = '\0';
318 }
319 }
320
321 snprintf(key_msg, sizeof key_msg,
322"%s - left %s - rotate %s - right %s - drop %s - pause %s - quit",
323 key_write[0], key_write[1], key_write[2], key_write[3],
324 key_write[4], key_write[5]);
325
326 scr_init();
327 initscores();
328 while (tetris_menu(&level)) {
329 fallrate = 1000000 / level;
330
331 scr_clear();
332 setup_board();
333
334 srandomdev();
335 scr_set();
336
337 pos = A_FIRST*B_COLS + (B_COLS/2)-1;
338 nextshape = randshape();
339 curshape = randshape();
340
341 scr_msg(key_msg, 1);
342
343 for (;;) {
344 place(curshape, pos, 1);
345 scr_update();
346 place(curshape, pos, 0);
347 c = tgetchar();
348 if (c < 0) {
349 /*
350 * Timeout. Move down if possible.
351 */
352 if (fits_in(curshape, pos + B_COLS)) {
353 pos += B_COLS;
354 continue;
355 }
356
357 /*
358 * Put up the current shape `permanently',
359 * bump score, and elide any full rows.
360 */
361 place(curshape, pos, 1);
362 score++;
363 elide();
364
365 /*
366 * Choose a new shape. If it does not fit,
367 * the game is over.
368 */
369 curshape = nextshape;
370 nextshape = randshape();
371 pos = A_FIRST*B_COLS + (B_COLS/2)-1;
372 if (!fits_in(curshape, pos))
373 break;
374 continue;
375 }
376
377 /*
378 * Handle command keys.
379 */
380 if (c == keys[5]) {
381 /* quit */
382 break;
383 }
384 if (c == keys[4]) {
385 static char msg[] =
386 "paused - press RETURN to continue";
387
388 place(curshape, pos, 1);
389 do {
390 scr_update();
391 scr_msg(key_msg, 0);
392 scr_msg(msg, 1);
393 (void) fflush(stdout);
394 } while (rwait((struct timeval *)NULL) == -1);
395 scr_msg(msg, 0);
396 scr_msg(key_msg, 1);
397 place(curshape, pos, 0);
398 continue;
399 }
400 if (c == keys[0]) {
401 /* move left */
402 if (fits_in(curshape, pos - 1))
403 pos--;
404 continue;
405 }
406 if (c == keys[1]) {
407 /* turn */
408 const struct shape *new = &shapes[
409 classic? curshape->rotc : curshape->rot];
410
411 if (fits_in(new, pos))
412 curshape = new;
413 continue;
414 }
415 if (c == keys[2]) {
416 /* move right */
417 if (fits_in(curshape, pos + 1))
418 pos++;
419 continue;
420 }
421 if (c == keys[3]) {
422 /* move to bottom */
423 while (fits_in(curshape, pos + B_COLS)) {
424 pos += B_COLS;
425 score++;
426 }
427 continue;
428 }
429 if (c == '\f') {
430 scr_clear();
431 scr_msg(key_msg, 1);
432 }
433 }
434
435 scr_clear();
436 insertscore(score, level);
437 score=0;
438 }
439
440 scr_clear();
441 printf("\n\n\n\t\tGame over.\n");
442/*
443 while ((i = getchar()) != '\n')
444 if (i == EOF)
445 break
446*/
447 scr_end();
448
449 return 0;
450}
451
452/* void */
453/* onintr(int signo) */
454/* { */
455/* scr_clear(); /\* XXX signal race *\/ */
456/* scr_end(); /\* XXX signal race *\/ */
457/* _exit(0); */
458/* } */
459
460void
461usage(void)
462{
463 (void)fprintf(stderr, "usage: tetris [-ps] [-k keys] [-l level]\n");
464 exit(1);
465}
466
467/** @}
468 */
469
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