X-Git-Url: https://git.cameronkatri.com/bsdgames-darwin.git/blobdiff_plain/f673749e491684614e9f9a63114b342f2164d658..a9bc398e7d2831e9f265619e36ef03fe1320dce0:/worm/worm.c?ds=sidebyside diff --git a/worm/worm.c b/worm/worm.c index 1d7e187f..a6784083 100644 --- a/worm/worm.c +++ b/worm/worm.c @@ -1,4 +1,4 @@ -/* $NetBSD: worm.c,v 1.10 1999/07/28 23:09:45 hubertf Exp $ */ +/* $NetBSD: worm.c,v 1.23 2001/12/06 12:24:00 blymn Exp $ */ /* * Copyright (c) 1980, 1993 @@ -43,7 +43,7 @@ __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\ #if 0 static char sccsid[] = "@(#)worm.c 8.1 (Berkeley) 5/31/93"; #else -__RCSID("$NetBSD: worm.c,v 1.10 1999/07/28 23:09:45 hubertf Exp $"); +__RCSID("$NetBSD: worm.c,v 1.23 2001/12/06 12:24:00 blymn Exp $"); #endif #endif /* not lint */ @@ -54,6 +54,7 @@ __RCSID("$NetBSD: worm.c,v 1.10 1999/07/28 23:09:45 hubertf Exp $"); #include #include +#include #include #include #include @@ -79,20 +80,20 @@ int running = 0; int slow = 0; int score = 0; int start_len = LENGTH; -char lastch; +int visible_len; +int lastch; char outbuf[BUFSIZ]; void crash __P((void)) __attribute__((__noreturn__)); -void display __P((struct body *, char)); +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((char)); +void process __P((int)); void prize __P((void)); int rnd __P((int)); void setup __P((void)); -void suspend __P((int)); void wake __P((int)); int @@ -100,23 +101,36 @@ 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); - signal(SIGTSTP, suspend); /* process control signal */ initscr(); - crmode(); + cbreak(); noecho(); +#ifdef KEY_LEFT + keypad(stdscr, TRUE); +#endif 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, '*', '*'); @@ -139,8 +153,7 @@ main(argc, argv) else { fflush(stdout); - if (read(0, &ch, 1) >= 0) - process(ch); + process(getch()); } } } @@ -149,29 +162,40 @@ void life() { struct body *bp, *np; - int i; + int i, j = 1; 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(); + if (np == NULL) + err(1, NULL); 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; + visible_len = start_len + 1; } void display(pos, chr) - struct body *pos; + const struct body *pos; char chr; { wmove(tv, pos->y, pos->x); @@ -183,12 +207,17 @@ leave(dummy) int dummy; { endwin(); + + if (dummy == 0){ /* called via crash() */ + printf("\nWell, you ran into something and the game is over.\n"); + printf("Your final score was %d\n\n", score); + } exit(0); } void wake(dummy) - int dummy; + int dummy __attribute__((__unused__)); { signal(SIGALRM, wake); fflush(stdout); @@ -206,8 +235,15 @@ void 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 { - 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) != ' '); @@ -226,7 +262,7 @@ prize() void process(ch) - char ch; + int ch; { int x,y; struct body *nh; @@ -236,18 +272,42 @@ process(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 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; } @@ -259,6 +319,7 @@ process(ch) nh = tail->next; free(tail); tail = nh; + visible_len--; } else growing--; display(head, BODY); @@ -269,12 +330,14 @@ process(ch) 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(); + if (nh == NULL) + err(1, NULL); nh->next = NULL; nh->prev = head; head->next = nh; @@ -282,6 +345,7 @@ process(ch) nh->x = x; display(nh, HEAD); head = nh; + visible_len++; if (!(slow && running)) { wmove(tv, head->y, head->x); @@ -294,30 +358,9 @@ process(ch) void 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(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() {