2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)worm.c 8.1 (Berkeley) 5/31/93
31 * $FreeBSD: src/games/worm/worm.c,v 1.9 1999/12/07 02:01:27 billf Exp $
32 * $DragonFly: src/games/worm/worm.c,v 1.5 2006/09/07 21:28:27 pavalos Exp $
36 * Worm. Written by Michael Toy
47 #define newlink() malloc(sizeof(struct body));
52 #define CNTRL(p) (p-'A'+1)
61 } *head
, *tail
, goody
;
66 int start_len
= LENGTH
;
71 void display(struct body
*, char);
74 void newpos(struct body
*);
83 main(int argc
, char **argv
)
87 /* Revoke setgid privileges */
91 start_len
= atoi(argv
[1]);
92 if ((start_len
<= 0) || (start_len
> 500))
94 setbuf(stdout
, outbuf
);
96 signal(SIGALRM
, wake
);
97 signal(SIGINT
, leave
);
98 signal(SIGQUIT
, leave
);
99 signal(SIGTSTP
, suspend
); /* process control signal */
103 slow
= (baudrate() <= B1200
);
105 stw
= newwin(1, COLS
-1, 0, 0);
106 tv
= newwin(LINES
-1, COLS
-1, 1, 0);
109 scrollok(stw
, FALSE
);
111 wprintw(stw
, " Worm");
115 life(); /* Create the worm */
116 prize(); /* Put up a goal */
127 if (read(0, &ch
, 1) >= 0)
136 struct body
*bp
, *np
;
141 head
->x
= start_len
+2;
145 for (i
= 0, bp
= head
; i
< start_len
; i
++, bp
= np
) {
158 display(struct body
*pos
, char chr
)
160 wmove(tv
, pos
->y
, pos
->x
);
165 leave(int sig __unused
)
172 wake(int sig __unused
)
174 signal(SIGALRM
, wake
);
182 return (random() % range
);
186 newpos(struct body
*bp
)
189 bp
->y
= rnd(LINES
-3)+ 2;
190 bp
->x
= rnd(COLS
-3) + 1;
191 wmove(tv
, bp
->y
, bp
->x
);
192 } while(winch(tv
) != ' ');
202 waddch(tv
, value
+'0');
217 case 'h': x
--; break;
218 case 'j': y
++; break;
219 case 'k': y
--; break;
220 case 'l': x
++; break;
221 case 'H': x
--; running
= RUNLEN
; ch
= tolower(ch
); break;
222 case 'J': y
++; running
= RUNLEN
/2; ch
= tolower(ch
); break;
223 case 'K': y
--; running
= RUNLEN
/2; ch
= tolower(ch
); break;
224 case 'L': x
++; running
= RUNLEN
; ch
= tolower(ch
); break;
225 case '\f': setup(); return;
226 case CNTRL('Z'): suspend(0); return;
227 case CNTRL('C'): crash(); return;
228 case CNTRL('D'): crash(); return;
229 default: if (! running
) alarm(1);
236 tail
->next
->prev
= NULL
;
244 if (isdigit(ch
= winch(tv
)))
251 wprintw(stw
, "Score: %3d", score
);
254 else if(ch
!= ' ') crash();
263 if (!(slow
&& running
))
276 printf("Well, you ran into something and the game is over.\n");
277 printf("Your final score was %d\n", score
);
282 suspend(int sig __unused
)
288 kill(getpid(), SIGTSTP
);
289 signal(SIGTSTP
, suspend
);