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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_scores(int firstgame)
169
{
170
}
171
 
172
static void tetris_menu_draw(int level)
173
{
174
        clear_screen();
175
        moveto(5,10);
176
        puts("Tetris\n\n");
177
 
178
        moveto(8,10);
179
        printf("Level = %d (press keys 1 - 9 to change)",level);
180
        moveto(9,10);
181
        printf("Preview is %s (press 'p' to change)", (showpreview?"on ":"off"));
182
        moveto(12,10);
183
        printf("Press 'h' to show hiscore table.");
184
        moveto(13,10);
185
        printf("Press 's' to start game.");
186
        moveto(14,10);
187
        printf("Press 'q' to quit game.");
188
        moveto(20,10);
189
        printf("In game controls:");
190
        moveto(21,0);
191
        puts(key_msg);
192
}
193
 
194
static int tetris_menu(int *level)
195
{
196
    static int firstgame = 1;
197
    int i;
198
/*  if (showpreview == 0)
199
        (void)printf("Your score:  %d point%s  x  level %d  =  %d\n",
200
            score, score == 1 ? "" : "s", level, score * level);
201
    else {
202
        (void)printf("Your score:  %d point%s x level %d x preview penalty %0.3f = %d\n",
203
            score, score == 1 ? "" : "s", level, (double)PRE_PENALTY,
204
            (int)(score * level * PRE_PENALTY));
205
        score = score * PRE_PENALTY;
206
    }
207
    savescore(level);
208
 
209
    showscores(level);
210
 
211
    printf("\nHit 's' to new game, 'q' to quit.\n");
212
*/
213
    tetris_menu_draw(*level);
214
    while (1) {
215
 
216
        i = getchar();
217
 
218
        switch(i) {
219
            case 'p':
220
                showpreview = !showpreview;
221
                moveto(9,21);
222
                if (showpreview)
223
                    printf("on ");
224
                else
225
                    printf("off");
226
 
227
                break;
228
            case 'h':
229
                showscores(firstgame);
230
                tetris_menu_draw(*level);
231
                break;
232
            case 's':
233
                firstgame = 0;
234
                return 1;
235
            case 'q':
236
                return 0;
237
            case '1':
238
            case '2':
239
            case '3':
240
            case '4':
241
            case '5':
242
            case '6':      
243
            case '7':
244
            case '8':
245
            case '9':
246
                *level = i - '0';
247
                moveto(8,18);
248
                printf("%d", *level);
249
                break;
250
        }
251
    }
252
 
253
}
254
 
1419 jermar 255
int
256
main(int argc, char *argv[])
257
{
258
    int pos, c;
259
    char *keys;
260
    int level = 2;
261
    char key_write[6][10];
262
    const char *errstr;
263
    int ch, i, j;
264
 
265
    keys = "jkl pq";
266
 
1449 palkovsky 267
//  gid = getgid();
268
//  egid = getegid();
269
//  setegid(gid);
1419 jermar 270
 
1590 cejka 271
    classic = 0;
272
    showpreview = 1;
1419 jermar 273
 
1449 palkovsky 274
/*  while ((ch = getopt(argc, argv, "ck:l:ps")) != -1) */
275
/*      switch(ch) { */
276
/*      case 'c': */
277
/*          /\* */
278
/*           * this means: */
279
/*           *  - rotate the other way; */
280
/*           *  - no reverse video. */
281
/*           *\/ */
282
/*          classic = 1; */
283
/*          break; */
284
/*      case 'k': */
285
/*          if (strlen(keys = optarg) != 6) */
286
/*              usage(); */
287
/*          break; */
288
/*      case 'l': */
289
/*          level = (int)strtonum(optarg, MINLEVEL, MAXLEVEL, */
290
/*              &errstr); */
291
/*          if (errstr) */
292
/*              errx(1, "level must be from %d to %d", */
293
/*                  MINLEVEL, MAXLEVEL); */
294
/*          break; */
295
/*      case 'p': */
296
/*          showpreview = 1; */
297
/*          break; */
298
/*      case 's': */
299
/*          showscores(0); */
300
/*          exit(0); */
301
/*      default: */
302
/*          usage(); */
303
/*      } */
1419 jermar 304
 
1449 palkovsky 305
/*  argc -= optind; */
306
/*  argv += optind; */
1419 jermar 307
 
1449 palkovsky 308
/*  if (argc) */
309
/*      usage(); */
310
 
1419 jermar 311
    fallrate = 1000000 / level;
312
 
313
    for (i = 0; i <= 5; i++) {
314
        for (j = i+1; j <= 5; j++) {
315
            if (keys[i] == keys[j])
316
                errx(1, "duplicate command keys specified.");
317
        }
318
        if (keys[i] == ' ')
1472 palkovsky 319
            strncpy(key_write[i], "<space>", sizeof key_write[i]);
1419 jermar 320
        else {
321
            key_write[i][0] = keys[i];
322
            key_write[i][1] = '\0';
323
        }
324
    }
325
 
326
    snprintf(key_msg, sizeof key_msg,
327
"%s - left   %s - rotate   %s - right   %s - drop   %s - pause   %s - quit",
328
        key_write[0], key_write[1], key_write[2], key_write[3],
329
        key_write[4], key_write[5]);
1590 cejka 330
 
1419 jermar 331
    scr_init();
1590 cejka 332
    initscores();
333
    while (tetris_menu(&level)) {
1419 jermar 334
 
335
 
1590 cejka 336
        scr_clear();
337
        setup_board();
338
 
339
        srandomdev();
340
        scr_set();
341
 
342
        pos = A_FIRST*B_COLS + (B_COLS/2)-1;
343
        nextshape = randshape();
344
        curshape = randshape();
345
 
346
        scr_msg(key_msg, 1);
347
 
348
        for (;;) {
349
            place(curshape, pos, 1);
350
            scr_update();
351
            place(curshape, pos, 0);
352
            c = tgetchar();
353
            if (c < 0) {
354
                /*
355
                 * Timeout.  Move down if possible.
356
                 */
357
                if (fits_in(curshape, pos + B_COLS)) {
358
                    pos += B_COLS;
359
                    continue;
360
                }
361
 
362
                /*
363
                 * Put up the current shape `permanently',
364
                 * bump score, and elide any full rows.
365
                 */
366
                place(curshape, pos, 1);
367
                score++;
368
                elide();
369
 
370
                /*
371
                 * Choose a new shape.  If it does not fit,
372
                 * the game is over.
373
                 */
374
                curshape = nextshape;
375
                nextshape = randshape();
376
                pos = A_FIRST*B_COLS + (B_COLS/2)-1;
377
                if (!fits_in(curshape, pos))
378
                    break;
1419 jermar 379
                continue;
380
            }
1590 cejka 381
 
1419 jermar 382
            /*
1590 cejka 383
             * Handle command keys.
1419 jermar 384
             */
1590 cejka 385
            if (c == keys[5]) {
386
                /* quit */
1419 jermar 387
                break;
388
            }
1590 cejka 389
            if (c == keys[4]) {
390
                static char msg[] =
391
                    "paused - press RETURN to continue";
1584 cejka 392
 
1590 cejka 393
                place(curshape, pos, 1);
394
                do {
395
                    scr_update();
396
                    scr_msg(key_msg, 0);
397
                    scr_msg(msg, 1);
398
    //              (void) fflush(stdout);
399
                } while (rwait((struct timeval *)NULL) == -1);
400
                scr_msg(msg, 0);
401
                scr_msg(key_msg, 1);
402
                place(curshape, pos, 0);
403
                continue;
404
            }
405
            if (c == keys[0]) {
406
                /* move left */
407
                if (fits_in(curshape, pos - 1))
408
                    pos--;
409
                continue;
410
            }
411
            if (c == keys[1]) {
412
                /* turn */
413
                const struct shape *new = &shapes[
414
                    classic? curshape->rotc : curshape->rot];
1584 cejka 415
 
1590 cejka 416
                if (fits_in(new, pos))
417
                    curshape = new;
418
                continue;
419
            }
420
            if (c == keys[2]) {
421
                /* move right */
422
                if (fits_in(curshape, pos + 1))
423
                    pos++;
424
                continue;
425
            }
426
            if (c == keys[3]) {
427
                /* move to bottom */
428
                while (fits_in(curshape, pos + B_COLS)) {
429
                    pos += B_COLS;
430
                    score++;
431
                }
432
                continue;
433
            }
434
            if (c == '\f') {
435
                scr_clear();
436
                scr_msg(key_msg, 1);
437
            }
438
        }
439
 
440
        scr_clear();
441
        insertscore(score, level);
1584 cejka 442
    }
443
 
444
    scr_clear();
445
    printf("\n\n\n\t\tGame over.\n");
446
/* 
1419 jermar 447
    while ((i = getchar()) != '\n')
448
        if (i == EOF)
1584 cejka 449
            break
450
*/
1590 cejka 451
    scr_end();
1419 jermar 452
    exit(0);
453
}
454
 
1449 palkovsky 455
/* void */
456
/* onintr(int signo) */
457
/* { */
458
/*  scr_clear();        /\* XXX signal race *\/ */
459
/*  scr_end();      /\* XXX signal race *\/ */
460
/*  _exit(0); */
461
/* } */
1419 jermar 462
 
463
void
464
usage(void)
465
{
466
    (void)fprintf(stderr, "usage: tetris [-ps] [-k keys] [-l level]\n");
467
    exit(1);
468
}
1653 cejka 469
 
470
/** @}
471
 */
472