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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1980 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)worm.c 5.8 (Berkeley) 2/28/91";
- #endif /* not lint */
-
- /*
- * Worm. Written by Michael Toy
- * UCSC
- */
-
- #include <ctype.h>
- #include <curses.h>
- #include <signal.h>
-
- #define newlink() (struct body *) malloc(sizeof (struct body));
- #define HEAD '@'
- #define BODY 'o'
- #define LENGTH 7
- #define RUNLEN 8
- #define when break;case
- #define otherwise break;default
- #define CNTRL(p) (p-'A'+1)
- #ifndef baudrate
- # define baudrate() _tty.sg_ospeed
- #endif
-
- WINDOW *tv;
- WINDOW *stw;
- struct body {
- int x;
- int y;
- struct body *prev;
- struct body *next;
- } *head, *tail, goody;
- int growing = 0;
- int running = 0;
- int slow = 0;
- int score = 0;
- int start_len = LENGTH;
- char lastch;
- char outbuf[BUFSIZ];
-
- void leave(), wake(), suspend();
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- char ch;
-
- if (argc == 2)
- start_len = atoi(argv[1]);
- if ((start_len <= 0) || (start_len > 500))
- start_len = LENGTH;
- setbuf(stdout, outbuf);
- srand(getpid());
- signal(SIGALRM, wake);
- signal(SIGINT, leave);
- signal(SIGQUIT, leave);
- signal(SIGTSTP, suspend); /* process control signal */
- initscr();
- crmode();
- noecho();
- slow = (baudrate() <= B1200);
- clear();
- stw = newwin(1, COLS-1, 0, 0);
- tv = newwin(LINES-1, COLS-1, 1, 0);
- box(tv, '*', '*');
- scrollok(tv, FALSE);
- scrollok(stw, FALSE);
- wmove(stw, 0, 0);
- wprintw(stw, " Worm");
- refresh();
- wrefresh(stw);
- wrefresh(tv);
- life(); /* Create the worm */
- prize(); /* Put up a goal */
- while(1)
- {
- if (running)
- {
- running--;
- process(lastch);
- }
- else
- {
- fflush(stdout);
- if (read(0, &ch, 1) >= 0)
- process(ch);
- }
- }
- }
-
- life()
- {
- register struct body *bp, *np;
- register int i;
-
- head = newlink();
- head->x = start_len+2;
- head->y = 12;
- head->next = NULL;
- display(head, HEAD);
- for (i = 0, bp = head; i < start_len; i++, bp = np) {
- np = newlink();
- np->next = bp;
- bp->prev = np;
- np->x = bp->x - 1;
- np->y = bp->y;
- display(np, BODY);
- }
- tail = np;
- tail->prev = NULL;
- }
-
- display(pos, chr)
- struct body *pos;
- char chr;
- {
- wmove(tv, pos->y, pos->x);
- waddch(tv, chr);
- }
-
- void
- leave()
- {
- endwin();
- exit(0);
- }
-
- void
- wake()
- {
- signal(SIGALRM, wake);
- fflush(stdout);
- process(lastch);
- }
-
- rnd(range)
- {
- return abs((rand()>>5)+(rand()>>5)) % range;
- }
-
- newpos(bp)
- struct body * bp;
- {
- do {
- bp->y = rnd(LINES-3)+ 2;
- bp->x = rnd(COLS-3) + 1;
- wmove(tv, bp->y, bp->x);
- } while(winch(tv) != ' ');
- }
-
- prize()
- {
- int value;
-
- value = rnd(9) + 1;
- newpos(&goody);
- waddch(tv, value+'0');
- wrefresh(tv);
- }
-
- process(ch)
- char ch;
- {
- register int x,y;
- struct body *nh;
-
- alarm(0);
- x = head->x;
- y = head->y;
- switch(ch)
- {
- when 'h': x--;
- when 'j': y++;
- when 'k': y--;
- when 'l': x++;
- when 'H': x--; running = RUNLEN; ch = tolower(ch);
- when 'J': y++; running = RUNLEN/2; ch = tolower(ch);
- when 'K': y--; running = RUNLEN/2; ch = tolower(ch);
- when 'L': x++; running = RUNLEN; ch = tolower(ch);
- when '\f': setup(); return;
- when CNTRL('Z'): suspend(); return;
- when CNTRL('C'): crash(); return;
- when CNTRL('D'): crash(); return;
- otherwise: if (! running) alarm(1);
- return;
- }
- lastch = ch;
- if (growing == 0)
- {
- display(tail, ' ');
- tail->next->prev = NULL;
- nh = tail->next;
- free(tail);
- tail = nh;
- }
- else growing--;
- display(head, BODY);
- wmove(tv, y, x);
- if (isdigit(ch = winch(tv)))
- {
- growing += ch-'0';
- prize();
- score += growing;
- running = 0;
- wmove(stw, 0, 68);
- wprintw(stw, "Score: %3d", score);
- wrefresh(stw);
- }
- else if(ch != ' ') crash();
- nh = newlink();
- nh->next = NULL;
- nh->prev = head;
- head->next = nh;
- nh->y = y;
- nh->x = x;
- display(nh, HEAD);
- head = nh;
- if (!(slow && running))
- wrefresh(tv);
- if (!running)
- alarm(1);
- }
-
- crash()
- {
- sleep(2);
- clear();
- move(23, 0);
- refresh();
- printf("Well, you ran into something and the game is over.\n");
- printf("Your final score was %d\n", score);
- leave();
- }
-
- void
- suspend()
- {
- char *sh;
-
- move(LINES-1, 0);
- refresh();
- endwin();
- fflush(stdout);
- kill(getpid(), SIGTSTP);
- signal(SIGTSTP, suspend);
- crmode();
- noecho();
- setup();
- }
-
- setup()
- {
- clear();
- refresh();
- touchwin(stw);
- wrefresh(stw);
- touchwin(tv);
- wrefresh(tv);
- alarm(1);
- }
-