338 lines
7.0 KiB
C
338 lines
7.0 KiB
C
/* $NetBSD: tetris.c,v 1.17 2004/01/27 20:30:30 jsm Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Chris Torek and Darren F. Provine.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)tetris.c 8.1 (Berkeley) 5/31/93
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1992, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* Tetris (or however it is spelled).
|
|
*/
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "input.h"
|
|
#include "scores.h"
|
|
#include "screen.h"
|
|
#include "tetris.h"
|
|
|
|
cell board[B_SIZE]; /* 1 => occupied, 0 => empty */
|
|
|
|
int Rows, Cols; /* current screen size */
|
|
|
|
const struct shape *curshape;
|
|
const struct shape *nextshape;
|
|
|
|
long fallrate; /* less than 1 million; smaller => faster */
|
|
|
|
int score; /* the obvious thing */
|
|
gid_t gid, egid;
|
|
|
|
char key_msg[100];
|
|
int showpreview;
|
|
|
|
static void elide(void);
|
|
static void setup_board(void);
|
|
int main(int, char **);
|
|
void onintr(int) __attribute__((__noreturn__));
|
|
void usage(void) __attribute__((__noreturn__));
|
|
|
|
/*
|
|
* Set up the initial board. The bottom display row is completely set,
|
|
* along with another (hidden) row underneath that. Also, the left and
|
|
* right edges are set.
|
|
*/
|
|
static void
|
|
setup_board()
|
|
{
|
|
int i;
|
|
cell *p;
|
|
|
|
p = board;
|
|
for (i = B_SIZE; i; i--)
|
|
*p++ = i <= (2 * B_COLS) || (i % B_COLS) < 2;
|
|
}
|
|
|
|
/*
|
|
* Elide any full active rows.
|
|
*/
|
|
static void
|
|
elide()
|
|
{
|
|
int i, j, base;
|
|
cell *p;
|
|
|
|
for (i = A_FIRST; i < A_LAST; i++) {
|
|
base = i * B_COLS + 1;
|
|
p = &board[base];
|
|
for (j = B_COLS - 2; *p++ != 0;) {
|
|
if (--j <= 0) {
|
|
/* this row is to be elided */
|
|
memset(&board[base], 0, B_COLS - 2);
|
|
scr_update();
|
|
tsleep();
|
|
while (--base != 0)
|
|
board[base + B_COLS] = board[base];
|
|
scr_update();
|
|
tsleep();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int pos, c;
|
|
const char *keys;
|
|
int level = 2;
|
|
char key_write[6][10];
|
|
int ch, i, j;
|
|
int fd;
|
|
|
|
gid = getgid();
|
|
egid = getegid();
|
|
setegid(gid);
|
|
|
|
fd = open("/dev/null", O_RDONLY);
|
|
if (fd < 3)
|
|
exit(1);
|
|
close(fd);
|
|
|
|
keys = "jkl pq";
|
|
|
|
while ((ch = getopt(argc, argv, "k:l:ps")) != -1)
|
|
switch(ch) {
|
|
case 'k':
|
|
if (strlen(keys = optarg) != 6)
|
|
usage();
|
|
break;
|
|
case 'l':
|
|
level = atoi(optarg);
|
|
if (level < MINLEVEL || level > MAXLEVEL) {
|
|
errx(1, "level must be from %d to %d",
|
|
MINLEVEL, MAXLEVEL);
|
|
}
|
|
break;
|
|
case 'p':
|
|
showpreview = 1;
|
|
break;
|
|
case 's':
|
|
showscores(0);
|
|
exit(0);
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc)
|
|
usage();
|
|
|
|
fallrate = 1000000 / level;
|
|
|
|
for (i = 0; i <= 5; i++) {
|
|
for (j = i+1; j <= 5; j++) {
|
|
if (keys[i] == keys[j]) {
|
|
errx(1, "duplicate command keys specified.");
|
|
}
|
|
}
|
|
if (keys[i] == ' ')
|
|
strcpy(key_write[i], "<space>");
|
|
else {
|
|
key_write[i][0] = keys[i];
|
|
key_write[i][1] = '\0';
|
|
}
|
|
}
|
|
|
|
sprintf(key_msg,
|
|
"%s - left %s - rotate %s - right %s - drop %s - pause %s - quit",
|
|
key_write[0], key_write[1], key_write[2], key_write[3],
|
|
key_write[4], key_write[5]);
|
|
|
|
(void)signal(SIGINT, onintr);
|
|
scr_init();
|
|
setup_board();
|
|
|
|
srandom(getpid());
|
|
scr_set();
|
|
|
|
pos = A_FIRST*B_COLS + (B_COLS/2)-1;
|
|
nextshape = randshape();
|
|
curshape = randshape();
|
|
|
|
scr_msg(key_msg, 1);
|
|
|
|
for (;;) {
|
|
place(curshape, pos, 1);
|
|
scr_update();
|
|
place(curshape, pos, 0);
|
|
c = tgetchar();
|
|
if (c < 0) {
|
|
/*
|
|
* Timeout. Move down if possible.
|
|
*/
|
|
if (fits_in(curshape, pos + B_COLS)) {
|
|
pos += B_COLS;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Put up the current shape `permanently',
|
|
* bump score, and elide any full rows.
|
|
*/
|
|
place(curshape, pos, 1);
|
|
score++;
|
|
elide();
|
|
|
|
/*
|
|
* Choose a new shape. If it does not fit,
|
|
* the game is over.
|
|
*/
|
|
curshape = nextshape;
|
|
nextshape = randshape();
|
|
pos = A_FIRST*B_COLS + (B_COLS/2)-1;
|
|
if (!fits_in(curshape, pos))
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Handle command keys.
|
|
*/
|
|
if (c == keys[5]) {
|
|
/* quit */
|
|
break;
|
|
}
|
|
if (c == keys[4]) {
|
|
static char msg[] =
|
|
"paused - press RETURN to continue";
|
|
|
|
place(curshape, pos, 1);
|
|
do {
|
|
scr_update();
|
|
scr_msg(key_msg, 0);
|
|
scr_msg(msg, 1);
|
|
(void) fflush(stdout);
|
|
} while (rwait((struct timeval *)NULL) == -1);
|
|
scr_msg(msg, 0);
|
|
scr_msg(key_msg, 1);
|
|
place(curshape, pos, 0);
|
|
continue;
|
|
}
|
|
if (c == keys[0]) {
|
|
/* move left */
|
|
if (fits_in(curshape, pos - 1))
|
|
pos--;
|
|
continue;
|
|
}
|
|
if (c == keys[1]) {
|
|
/* turn */
|
|
const struct shape *new = &shapes[curshape->rot];
|
|
|
|
if (fits_in(new, pos))
|
|
curshape = new;
|
|
continue;
|
|
}
|
|
if (c == keys[2]) {
|
|
/* move right */
|
|
if (fits_in(curshape, pos + 1))
|
|
pos++;
|
|
continue;
|
|
}
|
|
if (c == keys[3]) {
|
|
/* move to bottom */
|
|
while (fits_in(curshape, pos + B_COLS)) {
|
|
pos += B_COLS;
|
|
score++;
|
|
}
|
|
continue;
|
|
}
|
|
if (c == '\f') {
|
|
scr_clear();
|
|
scr_msg(key_msg, 1);
|
|
}
|
|
}
|
|
|
|
scr_clear();
|
|
scr_end();
|
|
|
|
(void)printf("Your score: %d point%s x level %d = %d\n",
|
|
score, score == 1 ? "" : "s", level, score * level);
|
|
savescore(level);
|
|
|
|
printf("\nHit RETURN to see high scores, ^C to skip.\n");
|
|
|
|
while ((i = getchar()) != '\n')
|
|
if (i == EOF)
|
|
break;
|
|
|
|
showscores(level);
|
|
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
onintr(signo)
|
|
int signo __attribute__((__unused__));
|
|
{
|
|
scr_clear();
|
|
scr_end();
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: tetris-bsd [-ps] [-k keys] [-l level]\n");
|
|
exit(1);
|
|
}
|