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1419 jermar 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
 
1653 cejka 38
/** @addtogroup tetris Tetris
39
 * @brief   Tetris ported from OpenBSD
40
 * @{
41
 */
42
/** @file
43
 */
44
 
1419 jermar 45
#ifndef lint
46
static 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
 
69
cell    board[B_SIZE];
70
int Rows, Cols;
71
const struct shape *curshape;
72
const struct shape *nextshape;
73
long    fallrate;
74
int score;
1449 palkovsky 75
//gid_t gid, egid;
1419 jermar 76
char    key_msg[100];
77
int showpreview, classic;
78
 
79
static void elide(void);
80
static void setup_board(void);
81
const struct shape *randshape(void);
82
void    onintr(int);
83
void    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
 */
90
static void
91
setup_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
 */
104
static void
105
elide(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
 
147
const struct shape *
148
randshape(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
 
1472 palkovsky 160
static void srandomdev(void)
161
{
162
    struct timeval tv;
163
 
164
    gettimeofday(&tv, NULL);
165
    srandom(tv.tv_sec + tv.tv_usec / 100000);
166
}
167
 
1590 cejka 168
static 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
 
190
static 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
 
1419 jermar 251
int
252
main(int argc, char *argv[])
253
{
254
    int pos, c;
255
    char *keys;
256
    int level = 2;
257
    char key_write[6][10];
1721 palkovsky 258
    int i, j;
1419 jermar 259
 
260
    keys = "jkl pq";
261
 
1449 palkovsky 262
//  gid = getgid();
263
//  egid = getegid();
264
//  setegid(gid);
1419 jermar 265
 
1590 cejka 266
    classic = 0;
267
    showpreview = 1;
1419 jermar 268
 
1449 palkovsky 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 (strlen(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
/*      } */
1419 jermar 299
 
1449 palkovsky 300
/*  argc -= optind; */
301
/*  argv += optind; */
1419 jermar 302
 
1449 palkovsky 303
/*  if (argc) */
304
/*      usage(); */
305
 
1688 jermar 306
 
1419 jermar 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] == ' ')
1472 palkovsky 314
            strncpy(key_write[i], "<space>", sizeof key_write[i]);
1419 jermar 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]);
1590 cejka 325
 
1419 jermar 326
    scr_init();
1590 cejka 327
    initscores();
328
    while (tetris_menu(&level)) {
1688 jermar 329
        fallrate = 1000000 / level;
330
 
1590 cejka 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;
1419 jermar 374
                continue;
375
            }
1590 cejka 376
 
1419 jermar 377
            /*
1590 cejka 378
             * Handle command keys.
1419 jermar 379
             */
1590 cejka 380
            if (c == keys[5]) {
381
                /* quit */
1419 jermar 382
                break;
383
            }
1590 cejka 384
            if (c == keys[4]) {
385
                static char msg[] =
386
                    "paused - press RETURN to continue";
1584 cejka 387
 
1590 cejka 388
                place(curshape, pos, 1);
389
                do {
390
                    scr_update();
391
                    scr_msg(key_msg, 0);
392
                    scr_msg(msg, 1);
4347 svoboda 393
                    (void) fflush(stdout);
1590 cejka 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];
1584 cejka 410
 
1590 cejka 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);
1710 vana 437
        score=0;
1584 cejka 438
    }
439
 
440
    scr_clear();
441
    printf("\n\n\n\t\tGame over.\n");
442
/* 
1419 jermar 443
    while ((i = getchar()) != '\n')
444
        if (i == EOF)
1584 cejka 445
            break
446
*/
1590 cejka 447
    scr_end();
1721 palkovsky 448
 
449
    return 0;
1419 jermar 450
}
451
 
1449 palkovsky 452
/* void */
453
/* onintr(int signo) */
454
/* { */
455
/*  scr_clear();        /\* XXX signal race *\/ */
456
/*  scr_end();      /\* XXX signal race *\/ */
457
/*  _exit(0); */
458
/* } */
1419 jermar 459
 
460
void
461
usage(void)
462
{
463
    (void)fprintf(stderr, "usage: tetris [-ps] [-k keys] [-l level]\n");
464
    exit(1);
465
}
1653 cejka 466
 
467
/** @}
468
 */
469