Fix merge conflicts

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

diff --git a/worm/worm.c b/worm/worm.c
index a6784083dcf5294f9879c74d28575db0bd03558f..225ed0a1f6c0819bd2b9cf39dc02366da3ee5418 100644 (file)
--- a/worm/worm.c
+++ b/worm/worm.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: worm.c,v 1.23 2001/12/06 12:24:00 blymn Exp $  */
+/*     $NetBSD: worm.c,v 1.31 2015/08/17 17:17:01 dholland Exp $       */
 
 /*
  * 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.
- * 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.
  *
@@ -35,15 +31,15 @@
 
 #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
-__RCSID("$NetBSD: worm.c,v 1.23 2001/12/06 12:24:00 blymn Exp $");
+__RCSID("$NetBSD: worm.c,v 1.31 2015/08/17 17:17:01 dholland Exp $");
 #endif
 #endif /* not lint */
 
@@ -60,46 +56,57 @@ __RCSID("$NetBSD: worm.c,v 1.23 2001/12/06 12:24:00 blymn Exp $");
 #include <termios.h>
 #include <unistd.h>
 
-#define newlink() (struct body *) malloc(sizeof (struct body));
 #define HEAD '@'
 #define BODY 'o'
 #define LENGTH 7
 #define RUNLEN 8
 #define CNTRL(p) (p-'A'+1)
 
-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;
-int visible_len;
-int lastch;
-char outbuf[BUFSIZ];
-
-void   crash __P((void)) __attribute__((__noreturn__));
-void   display __P((const 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((int));
-void   prize __P((void));
-int    rnd __P((int));
-void   setup __P((void));
-void   wake __P((int));
+};
+
+static WINDOW *tv;
+static WINDOW *stw;
+static struct body *head, *tail, goody;
+static int growing = 0;
+static int running = 0;
+static int slow = 0;
+static int score = 0;
+static int start_len = LENGTH;
+static int visible_len;
+static int lastch;
+static char outbuf[BUFSIZ];
+
+int    main(int, char **);
+static void crash(void) __dead;
+static void display(const struct body *, char);
+static void leave(int) __dead;
+static void life(void);
+static void newpos(struct body *);
+static void process(int);
+static void prize(void);
+static int rnd(int);
+static void setup(void);
+static void wake(int);
+
+static struct body *
+newlink(void)
+{
+       struct body *b;
+
+       b = malloc(sizeof(*b));
+       if (b == NULL) {
+               err(EXIT_FAILURE, NULL);
+       }
+       return b;
+}
 
 int
-main(argc, argv)
-       int argc;
-       char **argv;
+main(int argc, char **argv)
 {
 
        /* Revoke setgid privileges */
@@ -110,7 +117,8 @@ main(argc, argv)
        signal(SIGALRM, wake);
        signal(SIGINT, leave);
        signal(SIGQUIT, leave);
-       initscr();
+       if (!initscr())
+               errx(0, "couldn't initialize screen");
        cbreak();
        noecho();
 #ifdef KEY_LEFT
@@ -158,24 +166,20 @@ main(argc, argv)
        }
 }
 
-void
-life()
+static void
+life(void)
 {
        struct body *bp, *np;
        int i, j = 1;
 
        np = NULL;
        head = newlink();
-       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();
-               if (np == NULL)
-                       err(1, NULL);
                np->next = bp;
                bp->prev = np;
                if (((bp->x <= 2) && (j == 1)) || ((bp->x >= COLS-4) && (j == -1))) {
@@ -193,18 +197,15 @@ life()
        visible_len = start_len + 1;
 }
 
-void
-display(pos, chr)
-       const struct body *pos;
-       char chr;
+static void
+display(const struct body *pos, char chr)
 {
        wmove(tv, pos->y, pos->x);
        waddch(tv, chr);
 }
 
-void
-leave(dummy)
-       int dummy;
+static void
+leave(int dummy)
 {
        endwin();
 
@@ -215,25 +216,22 @@ leave(dummy)
        exit(0);
 }
 
-void
-wake(dummy)
-       int dummy __attribute__((__unused__));
+static void
+wake(int dummy)
 {
        signal(SIGALRM, wake);
        fflush(stdout);
        process(lastch);
 }
 
-int
-rnd(range)
-       int range;
+static int
+rnd(int range)
 {
        return abs((rand()>>5)+(rand()>>5)) % range;
 }
 
-void
-newpos(bp)
-       struct body * bp;
+static void
+newpos(struct body *bp)
 {
        if (visible_len == (LINES-3) * (COLS-3) - 1) {
                endwin();
@@ -249,8 +247,8 @@ newpos(bp)
        } while(winch(tv) != ' ');
 }
 
-void
-prize()
+static void
+prize(void)
 {
        int value;
 
@@ -260,9 +258,8 @@ prize()
        wrefresh(tv);
 }
 
-void
-process(ch)
-       int ch;
+static void
+process(int ch)
 {
        int x,y;
        struct body *nh;
@@ -336,8 +333,6 @@ process(ch)
        }
        else if(ch != ' ') crash();
        nh = newlink();
-       if (nh == NULL)
-               err(1, NULL);
        nh->next = NULL;
        nh->prev = head;
        head->next = nh;
@@ -355,14 +350,14 @@ process(ch)
                alarm(1);
 }
 
-void
-crash()
+static void
+crash(void)
 {
        leave(0);
 }
 
-void
-setup()
+static void
+setup(void)
 {
        clear();
        refresh();