more whitespace

[bsdgames-darwin.git] / worm / worm.c

diff --git a/worm/worm.c b/worm/worm.c
index 618436c5bcb8c13cb4d66fa461ddc5cc9a63e46a..2c166128c3dabcdfbbe96b6f1a619d0276776319 100644 (file)
--- a/worm/worm.c
+++ b/worm/worm.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: worm.c,v 1.11 1999/08/08 03:08:08 hubertf Exp $        */
+/*     $NetBSD: worm.c,v 1.28 2008/08/08 16:10:47 drochner Exp $       */

 
 /*
  * Copyright (c) 1980, 1993
 
 /*
  * Copyright (c) 1980, 1993


@@ -12,11 +12,7 @@
  * 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.
  * 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
+ * 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.
  *
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *


@@ -35,15 +31,15 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
 
 #include <sys/cdefs.h>
 #ifndef lint

-__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
-       The Regents of the University of California.  All rights reserved.\n");
+__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
+ The Regents of the University of California.  All rights reserved.");

 #endif /* not lint */
 
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)worm.c     8.1 (Berkeley) 5/31/93";
 #else
 #endif /* not lint */
 
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)worm.c     8.1 (Berkeley) 5/31/93";
 #else

-__RCSID("$NetBSD: worm.c,v 1.11 1999/08/08 03:08:08 hubertf Exp $");
+__RCSID("$NetBSD: worm.c,v 1.28 2008/08/08 16:10:47 drochner Exp $");

 #endif
 #endif /* not lint */
 
 #endif
 #endif /* not lint */
 


@@ -54,6 +50,7 @@ __RCSID("$NetBSD: worm.c,v 1.11 1999/08/08 03:08:08 hubertf Exp $");
 
 #include <ctype.h>
 #include <curses.h>
 
 #include <ctype.h>
 #include <curses.h>

+#include <err.h>

 #include <signal.h>
 #include <stdlib.h>
 #include <termios.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <termios.h>


@@ -79,44 +76,58 @@ int running = 0;
 int slow = 0;
 int score = 0;
 int start_len = LENGTH;
 int slow = 0;
 int score = 0;
 int start_len = LENGTH;

-char lastch;
+int visible_len;
+int lastch;

 char outbuf[BUFSIZ];
 
 char outbuf[BUFSIZ];
 

-void   crash __P((void)) __attribute__((__noreturn__));
-void   display __P((struct body *, char));
-int    main __P((int, char **));
-void   leave __P((int)) __attribute__((__noreturn__));
-void   life __P((void));
-void   newpos __P((struct body *));
-void   process __P((char));
-void   prize __P((void));
-int    rnd __P((int));
-void   setup __P((void));
-void   suspend __P((int));
-void   wake __P((int));
+void   crash(void) __dead;
+void   display(const struct body *, char);
+int    main(int, char **);
+void   leave(int) __dead;
+void   life(void);
+void   newpos(struct body *);
+void   process(int);
+void   prize(void);
+int    rnd(int);
+void   setup(void);
+void   wake(int);

 
 int
 main(argc, argv)
        int argc;
        char **argv;
 {
 
 int
 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;
+       /* Revoke setgid privileges */
+       setgid(getgid());
+

        setbuf(stdout, outbuf);
        srand(getpid());
        signal(SIGALRM, wake);
        signal(SIGINT, leave);
        signal(SIGQUIT, leave);
        setbuf(stdout, outbuf);
        srand(getpid());
        signal(SIGALRM, wake);
        signal(SIGINT, leave);
        signal(SIGQUIT, leave);

-       signal(SIGTSTP, suspend);       /* process control signal */
-       initscr();
-       crmode();
+       if (!initscr())
+               errx(0, "couldn't initialize screen");
+       cbreak();

        noecho();
        noecho();

+#ifdef KEY_LEFT
+       keypad(stdscr, TRUE);
+#endif

        slow = (baudrate() <= 1200);
        clear();
        slow = (baudrate() <= 1200);
        clear();

+       if (COLS < 18 || LINES < 5) {
+               /*
+                * Insufficient room for the line with " Worm" and the
+                * score if fewer than 18 columns; insufficient room for
+                * anything much if fewer than 5 lines.
+                */
+               endwin();
+               errx(1, "screen too small");
+       }
+       if (argc == 2)
+               start_len = atoi(argv[1]);
+       if ((start_len <= 0) || (start_len > ((LINES-3) * (COLS-2)) / 3))
+               start_len = LENGTH;

        stw = newwin(1, COLS-1, 0, 0);
        tv = newwin(LINES-1, COLS-1, 1, 0);
        box(tv, '*', '*');
        stw = newwin(1, COLS-1, 0, 0);
        tv = newwin(LINES-1, COLS-1, 1, 0);
        box(tv, '*', '*');


@@ -139,8 +150,7 @@ main(argc, argv)
                else
                {
                    fflush(stdout);
                else
                {
                    fflush(stdout);

-                   if (read(0, &ch, 1) >= 0)
-                       process(ch);
+                   process(getch());

                }
        }
 }
                }
        }
 }


@@ -149,29 +159,40 @@ void
 life()
 {
        struct body *bp, *np;
 life()
 {
        struct body *bp, *np;

-       int i;
+       int i, j = 1;

 
        np = NULL;
        head = newlink();
 
        np = NULL;
        head = newlink();

-       head->x = start_len+2;
-       head->y = 12;
+       if (head == NULL)
+               err(1, NULL);
+       head->x = start_len % (COLS-5) + 2;
+       head->y = LINES / 2;

        head->next = NULL;
        display(head, HEAD);
        for (i = 0, bp = head; i < start_len; i++, bp = np) {
                np = newlink();
        head->next = NULL;
        display(head, HEAD);
        for (i = 0, bp = head; i < start_len; i++, bp = np) {
                np = newlink();

+               if (np == NULL)
+                       err(1, NULL);

                np->next = bp;
                bp->prev = np;
                np->next = bp;
                bp->prev = np;

-               np->x = bp->x - 1;
-               np->y = bp->y;
+               if (((bp->x <= 2) && (j == 1)) || ((bp->x >= COLS-4) && (j == -1))) {
+                       j *= -1;
+                       np->x = bp->x;
+                       np->y = bp->y + 1;
+               } else {
+                       np->x = bp->x - j;
+                       np->y = bp->y;
+               }

                display(np, BODY);
        }
        tail = np;
        tail->prev = NULL;
                display(np, BODY);
        }
        tail = np;
        tail->prev = NULL;

+       visible_len = start_len + 1;

 }
 
 void
 display(pos, chr)
 }
 
 void
 display(pos, chr)

-       struct body *pos;
+       const struct body *pos;

        char chr;
 {
        wmove(tv, pos->y, pos->x);
        char chr;
 {
        wmove(tv, pos->y, pos->x);


@@ -193,7 +214,7 @@ leave(dummy)
 
 void
 wake(dummy)
 
 void
 wake(dummy)

-       int dummy;
+       int dummy __unused;

 {
        signal(SIGALRM, wake);
        fflush(stdout);
 {
        signal(SIGALRM, wake);
        fflush(stdout);


@@ -211,8 +232,15 @@ void
 newpos(bp)
        struct body * bp;
 {
 newpos(bp)
        struct body * bp;
 {

+       if (visible_len == (LINES-3) * (COLS-3) - 1) {
+               endwin();
+
+               printf("\nYou won!\n");
+               printf("Your final score was %d\n\n", score);
+               exit(0);
+       }

        do {
        do {

-               bp->y = rnd(LINES-3)+ 2;
+               bp->y = rnd(LINES-3)+ 1;

                bp->x = rnd(COLS-3) + 1;
                wmove(tv, bp->y, bp->x);
        } while(winch(tv) != ' ');
                bp->x = rnd(COLS-3) + 1;
                wmove(tv, bp->y, bp->x);
        } while(winch(tv) != ' ');


@@ -231,7 +259,7 @@ prize()
 
 void
 process(ch)
 
 void
 process(ch)

-       char ch;
+       int ch;

 {
        int x,y;
        struct body *nh;
 {
        int x,y;
        struct body *nh;


@@ -241,18 +269,42 @@ process(ch)
        y = head->y;
        switch(ch)
        {
        y = head->y;
        switch(ch)
        {

-               case 'h': x--; break;
-               case 'j': y++; break;
-               case 'k': y--; break;
-               case 'l': x++; break;
+#ifdef KEY_LEFT
+               case KEY_LEFT:
+#endif
+               case 'h':
+                       x--; break;
+
+#ifdef KEY_DOWN
+               case KEY_DOWN:
+#endif
+               case 'j':
+                       y++; break;
+
+#ifdef KEY_UP
+               case KEY_UP:
+#endif
+               case 'k':
+                       y--; break;
+
+#ifdef KEY_RIGHT
+               case KEY_RIGHT:
+#endif
+               case 'l':
+                       x++; break;
+

                case 'H': x--; running = RUNLEN; ch = tolower(ch); break;
                case 'J': y++; running = RUNLEN/2; ch = tolower(ch); break;
                case 'K': y--; running = RUNLEN/2; ch = tolower(ch); break;
                case 'L': x++; running = RUNLEN; ch = tolower(ch); break;
                case '\f': setup(); return;
                case 'H': x--; running = RUNLEN; ch = tolower(ch); break;
                case 'J': y++; running = RUNLEN/2; ch = tolower(ch); break;
                case 'K': y--; running = RUNLEN/2; ch = tolower(ch); break;
                case 'L': x++; running = RUNLEN; ch = tolower(ch); break;
                case '\f': setup(); return;

-               case CNTRL('Z'): suspend(0); return;
-               case CNTRL('C'): crash(); return;
-               case CNTRL('D'): crash(); return;
+
+               case ERR:
+               case CNTRL('C'):
+               case CNTRL('D'):
+                       crash();
+                       return;
+

                default: if (! running) alarm(1);
                           return;
        }
                default: if (! running) alarm(1);
                           return;
        }


@@ -264,6 +316,7 @@ process(ch)
                nh = tail->next;
                free(tail);
                tail = nh;
                nh = tail->next;
                free(tail);
                tail = nh;

+               visible_len--;

        }
        else growing--;
        display(head, BODY);
        }
        else growing--;
        display(head, BODY);


@@ -274,12 +327,14 @@ process(ch)
                prize();
                score += growing;
                running = 0;
                prize();
                score += growing;
                running = 0;

-               wmove(stw, 0, 68);
+               wmove(stw, 0, COLS - 12);

                wprintw(stw, "Score: %3d", score);
                wrefresh(stw);
        }
        else if(ch != ' ') crash();
        nh = newlink();
                wprintw(stw, "Score: %3d", score);
                wrefresh(stw);
        }
        else if(ch != ' ') crash();
        nh = newlink();

+       if (nh == NULL)
+               err(1, NULL);

        nh->next = NULL;
        nh->prev = head;
        head->next = nh;
        nh->next = NULL;
        nh->prev = head;
        head->next = nh;


@@ -287,6 +342,7 @@ process(ch)
        nh->x = x;
        display(nh, HEAD);
        head = nh;
        nh->x = x;
        display(nh, HEAD);
        head = nh;

+       visible_len++;

        if (!(slow && running))
        {
                wmove(tv, head->y, head->x);
        if (!(slow && running))
        {
                wmove(tv, head->y, head->x);


@@ -299,28 +355,9 @@ process(ch)
 void
 crash()
 {
 void
 crash()
 {

-       sleep(2);
-       clear();
-       move(23, 0);
-       refresh();

        leave(0);
 }
 
        leave(0);
 }
 

-void
-suspend(dummy)
-       int dummy;
-{
-       move(LINES-1, 0);
-       refresh();
-       endwin();
-       fflush(stdout);
-       kill(getpid(), SIGTSTP);
-       signal(SIGTSTP, suspend);
-       crmode();
-       noecho();
-       setup();
-}
-

 void
 setup()
 {
 void
 setup()
 {