source: mainline/uspace/app/tetris/tetris.c@ ebe70f1

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since ebe70f1 was ebe70f1, checked in by Martin Decky <martin@…>, 16 years ago

slightly cleanup the horrible mess of tetris
introduce colors
  • Property mode set to 100644
File size: 8.5 KB
Line 
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
45static const char copyright[] =
46 "@(#) Copyright (c) 1992, 1993\n"
47 "\tThe Regents of the University of California. All rights reserved.\n";
48
49#include <sys/time.h>
50#include <sys/types.h>
51#include <err.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55#include <unistd.h>
56#include <getopt.h>
57
58#include "input.h"
59#include "scores.h"
60#include "screen.h"
61#include "tetris.h"
62
63cell board[B_SIZE];
64
65int Rows;
66int Cols;
67
68const struct shape *curshape;
69const struct shape *nextshape;
70
71long fallrate;
72int score;
73char key_msg[100];
74int showpreview;
75int classic;
76
77static void elide(void);
78static void setup_board(void);
79static const struct shape *randshape(void);
80
81static void usage(void);
82
83static int firstgame = 1;
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 setup_board(void)
91{
92 int i;
93 cell *p = board;
94
95 for (i = B_SIZE; i; i--)
96 *p++ = (i <= (2 * B_COLS) || (i % B_COLS) < 2) ? 0x0000ff : 0x000000;
97}
98
99/*
100 * Elide any full active rows.
101 */
102static void elide(void)
103{
104 int rows = 0;
105 int i;
106 int j;
107 int base;
108 cell *p;
109
110 for (i = A_FIRST; i < A_LAST; i++) {
111 base = i * B_COLS + 1;
112 p = &board[base];
113 for (j = B_COLS - 2; *p++ != 0;) {
114 if (--j <= 0) {
115 /* This row is to be elided */
116 rows++;
117 memset(&board[base], 0, sizeof(cell) * (B_COLS - 2));
118
119 scr_update();
120 tsleep();
121
122 while (--base != 0)
123 board[base + B_COLS] = board[base];
124
125 scr_update();
126 tsleep();
127
128 break;
129 }
130 }
131 }
132
133 switch (rows) {
134 case 1:
135 score += 10;
136 break;
137 case 2:
138 score += 30;
139 break;
140 case 3:
141 score += 70;
142 break;
143 case 4:
144 score += 150;
145 break;
146 default:
147 break;
148 }
149}
150
151const struct shape *randshape(void)
152{
153 const struct shape *tmp = &shapes[random() % 7];
154 int i;
155 int j = random() % 4;
156
157 for (i = 0; i < j; i++)
158 tmp = &shapes[classic ? tmp->rotc : tmp->rot];
159
160 return (tmp);
161}
162
163static void srandomdev(void)
164{
165 struct timeval tv;
166
167 gettimeofday(&tv, NULL);
168 srandom(tv.tv_sec + tv.tv_usec / 100000);
169}
170
171static void tetris_menu_draw(int level)
172{
173 clear_screen();
174 moveto(5, 10);
175 puts("Tetris\n\n");
176
177 moveto(8, 10);
178 printf("Level = %d (press keys 1 - 9 to change)", level);
179 moveto(9, 10);
180 printf("Preview is %s (press 'p' to change)", (showpreview ? "on ": "off"));
181 moveto(12, 10);
182 printf("Press 'h' to show hiscore table.");
183 moveto(13, 10);
184 printf("Press 's' to start game.");
185 moveto(14, 10);
186 printf("Press 'q' to quit game.");
187 moveto(20, 10);
188 printf("In game controls:");
189 moveto(21, 0);
190 puts(key_msg);
191}
192
193static int tetris_menu(int *level)
194{
195 tetris_menu_draw(*level);
196 while (1) {
197 int i = getchar();
198
199 switch(i) {
200 case 'p':
201 showpreview = !showpreview;
202 moveto(9, 21);
203 if (showpreview)
204 printf("on ");
205 else
206 printf("off");
207 break;
208 case 'h':
209 showscores(firstgame);
210 tetris_menu_draw(*level);
211 break;
212 case 's':
213 firstgame = 0;
214 return 1;
215 case 'q':
216 return 0;
217 case '1':
218 case '2':
219 case '3':
220 case '4':
221 case '5':
222 case '6':
223 case '7':
224 case '8':
225 case '9':
226 *level = i - '0';
227 moveto(8, 18);
228 printf("%d", *level);
229 break;
230 }
231 }
232}
233
234int main(int argc, char *argv[])
235{
236 int pos;
237 int c;
238 char *keys;
239 int level = 2;
240 char key_write[6][10];
241 int i;
242 int j;
243 int ch;
244
245 keys = "jkl pq";
246
247 classic = 0;
248 showpreview = 1;
249
250 while ((ch = getopt(argc, argv, "ck:ps")) != -1)
251 switch(ch) {
252 case 'c':
253 /*
254 * this means:
255 * - rotate the other way
256 * - no reverse video
257 */
258 classic = 1;
259 break;
260 case 'k':
261 if (str_size(keys = optarg) != 6)
262 usage();
263 break;
264 case 'p':
265 showpreview = 1;
266 break;
267 case 's':
268 showscores(0);
269 exit(0);
270 default:
271 usage();
272 }
273
274 argc -= optind;
275 argv += optind;
276
277 if (argc)
278 usage();
279
280 for (i = 0; i <= 5; i++) {
281 for (j = i + 1; j <= 5; j++) {
282 if (keys[i] == keys[j])
283 errx(1, "duplicate command keys specified.");
284 }
285
286 if (keys[i] == ' ')
287 str_cpy(key_write[i], sizeof(key_write[i]), "<space>");
288 else {
289 key_write[i][0] = keys[i];
290 key_write[i][1] = '\0';
291 }
292 }
293
294 snprintf(key_msg, sizeof(key_msg),
295 "%s - left %s - rotate %s - right %s - drop %s - pause %s - quit",
296 key_write[0], key_write[1], key_write[2], key_write[3],
297 key_write[4], key_write[5]);
298
299 scr_init();
300 initscores();
301 while (tetris_menu(&level)) {
302 fallrate = 1000000 / level;
303
304 scr_clear();
305 setup_board();
306
307 srandomdev();
308 scr_set();
309
310 pos = A_FIRST * B_COLS + (B_COLS / 2) - 1;
311 nextshape = randshape();
312 curshape = randshape();
313
314 scr_msg(key_msg, 1);
315
316 while (1) {
317 place(curshape, pos, 1);
318 scr_update();
319 place(curshape, pos, 0);
320 c = tgetchar();
321 if (c < 0) {
322 /*
323 * Timeout. Move down if possible.
324 */
325 if (fits_in(curshape, pos + B_COLS)) {
326 pos += B_COLS;
327 continue;
328 }
329
330 /*
331 * Put up the current shape `permanently',
332 * bump score, and elide any full rows.
333 */
334 place(curshape, pos, 1);
335 score++;
336 elide();
337
338 /*
339 * Choose a new shape. If it does not fit,
340 * the game is over.
341 */
342 curshape = nextshape;
343 nextshape = randshape();
344 pos = A_FIRST * B_COLS + (B_COLS / 2) - 1;
345
346 if (!fits_in(curshape, pos))
347 break;
348
349 continue;
350 }
351
352 /*
353 * Handle command keys.
354 */
355 if (c == keys[5]) {
356 /* quit */
357 break;
358 }
359
360 if (c == keys[4]) {
361 static char msg[] =
362 "paused - press RETURN to continue";
363
364 place(curshape, pos, 1);
365 do {
366 scr_update();
367 scr_msg(key_msg, 0);
368 scr_msg(msg, 1);
369 (void) fflush(stdout);
370 } while (rwait((struct timeval *) NULL) == -1);
371
372 scr_msg(msg, 0);
373 scr_msg(key_msg, 1);
374 place(curshape, pos, 0);
375 continue;
376 }
377
378 if (c == keys[0]) {
379 /* move left */
380 if (fits_in(curshape, pos - 1))
381 pos--;
382 continue;
383 }
384
385 if (c == keys[1]) {
386 /* turn */
387 const struct shape *new =
388 &shapes[classic ? curshape->rotc : curshape->rot];
389
390 if (fits_in(new, pos))
391 curshape = new;
392 continue;
393 }
394
395 if (c == keys[2]) {
396 /* move right */
397 if (fits_in(curshape, pos + 1))
398 pos++;
399 continue;
400 }
401
402 if (c == keys[3]) {
403 /* move to bottom */
404 while (fits_in(curshape, pos + B_COLS)) {
405 pos += B_COLS;
406 score++;
407 }
408 continue;
409 }
410
411 if (c == '\f') {
412 scr_clear();
413 scr_msg(key_msg, 1);
414 }
415 }
416
417 scr_clear();
418 insertscore(score, level);
419 score = 0;
420 }
421
422 scr_clear();
423 printf("\nGame over.\n");
424 scr_end();
425
426 return 0;
427}
428
429void usage(void)
430{
431 fprintf(stderr, "usage: tetris [-ps] [-k keys]\n");
432 exit(1);
433}
434
435/** @}
436 */
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