369 lines
8.4 KiB
C
369 lines
8.4 KiB
C
#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[] = "@(#)worms.c 1.1 94/10/31 SMI"; /* from UCB 5.3 85/07/15 */
|
|
#endif not lint
|
|
|
|
#define BSD
|
|
|
|
/*
|
|
|
|
@@@ @@@ @@@@@@@@@@ @@@@@@@@@@@ @@@@@@@@@@@@
|
|
@@@ @@@ @@@@@@@@@@@@ @@@@@@@@@@@@ @@@@@@@@@@@@@
|
|
@@@ @@@ @@@@ @@@@ @@@@ @@@@ @@@ @@@@
|
|
@@@ @@ @@@ @@@ @@@ @@@ @@@ @@@ @@@
|
|
@@@ @@@@ @@@ @@@ @@@ @@@ @@@ @@@ @@@
|
|
@@@@ @@@@ @@@@ @@@ @@@ @@@ @@@ @@@ @@@
|
|
@@@@@@@@@@@@ @@@@ @@@@ @@@ @@@ @@@ @@@
|
|
@@@@ @@@@ @@@@@@@@@@@@ @@@ @@@ @@@ @@@
|
|
@@ @@ @@@@@@@@@@ @@@ @@@ @@@ @@@
|
|
|
|
Eric P. Scott
|
|
Caltech High Energy Physics
|
|
October, 1980
|
|
|
|
*/
|
|
#include <stdio.h>
|
|
#ifdef USG
|
|
#include <termio.h>
|
|
#else
|
|
#include <sgtty.h>
|
|
#endif
|
|
#include <signal.h>
|
|
#define cursor(col,row) tputs(tgoto(CM,col,row),1,fputchar)
|
|
extern char *UP;
|
|
extern short ospeed;
|
|
int Wrap;
|
|
short **ref;
|
|
static char flavor[]={
|
|
'O', '*', '#', '$', '%', '0'
|
|
};
|
|
static short xinc[]={
|
|
1, 1, 1, 0, -1, -1, -1, 0
|
|
}, yinc[]={
|
|
-1, 0, 1, 1, 1, 0, -1, -1
|
|
};
|
|
static struct worm {
|
|
int orientation, head;
|
|
short *xpos, *ypos;
|
|
} worm[40];
|
|
static char *field;
|
|
static int length=16, number=3, trail=' ';
|
|
static struct options {
|
|
int nopts;
|
|
int opts[3];
|
|
} normal[8]={
|
|
{ 3, { 7, 0, 1 } },
|
|
{ 3, { 0, 1, 2 } },
|
|
{ 3, { 1, 2, 3 } },
|
|
{ 3, { 2, 3, 4 } },
|
|
{ 3, { 3, 4, 5 } },
|
|
{ 3, { 4, 5, 6 } },
|
|
{ 3, { 5, 6, 7 } },
|
|
{ 3, { 6, 7, 0 } }
|
|
}, upper[8]={
|
|
{ 1, { 1, 0, 0 } },
|
|
{ 2, { 1, 2, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 2, { 4, 5, 0 } },
|
|
{ 1, { 5, 0, 0 } },
|
|
{ 2, { 1, 5, 0 } }
|
|
}, left[8]={
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 2, { 2, 3, 0 } },
|
|
{ 1, { 3, 0, 0 } },
|
|
{ 2, { 3, 7, 0 } },
|
|
{ 1, { 7, 0, 0 } },
|
|
{ 2, { 7, 0, 0 } }
|
|
}, right[8]={
|
|
{ 1, { 7, 0, 0 } },
|
|
{ 2, { 3, 7, 0 } },
|
|
{ 1, { 3, 0, 0 } },
|
|
{ 2, { 3, 4, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 2, { 6, 7, 0 } }
|
|
}, lower[8]={
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 2, { 0, 1, 0 } },
|
|
{ 1, { 1, 0, 0 } },
|
|
{ 2, { 1, 5, 0 } },
|
|
{ 1, { 5, 0, 0 } },
|
|
{ 2, { 5, 6, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } }
|
|
}, upleft[8]={
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 1, { 3, 0, 0 } },
|
|
{ 2, { 1, 3, 0 } },
|
|
{ 1, { 1, 0, 0 } }
|
|
}, upright[8]={
|
|
{ 2, { 3, 5, 0 } },
|
|
{ 1, { 3, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 1, { 5, 0, 0 } }
|
|
}, lowleft[8]={
|
|
{ 3, { 7, 0, 1 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 1, { 1, 0, 0 } },
|
|
{ 2, { 1, 7, 0 } },
|
|
{ 1, { 7, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } }
|
|
}, lowright[8]={
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 1, { 7, 0, 0 } },
|
|
{ 2, { 5, 7, 0 } },
|
|
{ 1, { 5, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } },
|
|
{ 0, { 0, 0, 0 } }
|
|
};
|
|
char *TE, *CM;
|
|
int LI;
|
|
main(argc,argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
extern fputchar();
|
|
char *malloc();
|
|
char *getenv();
|
|
char *tgetstr(), *tgoto();
|
|
int quit();
|
|
float ranf();
|
|
register int x, y;
|
|
register int n;
|
|
register struct worm *w;
|
|
register struct options *op;
|
|
register int h;
|
|
register short *ip;
|
|
char *AL, *BC, *EI, *HO, *IC, *IM, *IP, *SR;
|
|
int CO, IN, last, bottom;
|
|
char *tcp;
|
|
register char *term;
|
|
char tcb[100];
|
|
#ifdef USG
|
|
struct termio sg;
|
|
#else
|
|
struct sgttyb sg;
|
|
#endif
|
|
setbuf(stdout,malloc(BUFSIZ));
|
|
for (x=1;x<argc;x++) {
|
|
register char *p;
|
|
p=argv[x];
|
|
if (*p=='-') p++;
|
|
switch (*p) {
|
|
case 'f':
|
|
field="WORM";
|
|
break;
|
|
case 'l':
|
|
if (++x==argc) goto usage;
|
|
if ((length=atoi(argv[x]))<2||length>1024) {
|
|
fprintf(stderr,"%s: Invalid length\n",*argv);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'n':
|
|
if (++x==argc) goto usage;
|
|
if ((number=atoi(argv[x]))<1||number>40) {
|
|
fprintf(stderr,"%s: Invalid number of worms\n",*argv);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 't':
|
|
trail='.';
|
|
break;
|
|
default:
|
|
usage:
|
|
fprintf(stderr,
|
|
"usage: %s [-field] [-length #] [-number #] [-trail]\n",*argv);
|
|
exit(1);
|
|
break;
|
|
}
|
|
}
|
|
if (!(term=getenv("TERM"))) {
|
|
fprintf(stderr,"%s: TERM: parameter not set\n",*argv);
|
|
exit(1);
|
|
}
|
|
if (tgetent(malloc(1024),term)<=0) {
|
|
fprintf(stderr,"%s: %s: unknown terminal type\n",*argv,term);
|
|
exit(1);
|
|
}
|
|
tcp=tcb;
|
|
if (!(CM=tgetstr("cm",&tcp))) {
|
|
fprintf(stderr,"%s: terminal not capable of cursor motion\n",*argv);
|
|
exit(1);
|
|
}
|
|
AL=tgetstr("al",&tcp);
|
|
BC=tgetflag("bs") ? "\b" : tgetstr("bc",&tcp);
|
|
if ((CO=tgetnum("co"))<=0) CO=80;
|
|
last=CO-1;
|
|
EI=tgetstr("ei",&tcp);
|
|
HO=tgetstr("ho",&tcp);
|
|
IC=tgetstr("ic",&tcp);
|
|
IM=tgetstr("im",&tcp);
|
|
IN=tgetflag("in");
|
|
IP=tgetstr("ip",&tcp);
|
|
if ((LI=tgetnum("li"))<=0) LI=24;
|
|
bottom=LI-1;
|
|
SR=tgetstr("sr",&tcp);
|
|
TE=tgetstr("te",&tcp);
|
|
UP=tgetstr("up",&tcp);
|
|
#ifdef USG
|
|
ioctl(fileno(stdout),TCGETA,&sg);
|
|
ospeed=sg.c_cflag&CBAUD;
|
|
#else
|
|
gtty(fileno(stdout),&sg);
|
|
ospeed=sg.sg_ospeed;
|
|
#endif
|
|
Wrap=tgetflag("am");
|
|
ip=(short *)malloc(LI*CO*sizeof (short));
|
|
ref=(short **)malloc(LI*sizeof (short *));
|
|
for (n=0;n<LI;) {
|
|
ref[n++]=ip; ip+=CO;
|
|
}
|
|
for (ip=ref[0],n=LI*CO;--n>=0;) *ip++=0;
|
|
if (Wrap) ref[bottom][last]=1;
|
|
for (n=number, w= &worm[0];--n>=0;w++) {
|
|
w->orientation=w->head=0;
|
|
if (!(ip=(short *)malloc(length*sizeof (short)))) {
|
|
fprintf(stderr,"%s: out of memory\n",*argv);
|
|
exit(1);
|
|
}
|
|
w->xpos=ip;
|
|
for (x=length;--x>=0;) *ip++ = -1;
|
|
if (!(ip=(short *)malloc(length*sizeof (short)))) {
|
|
fprintf(stderr,"%s: out of memory\n",*argv);
|
|
exit(1);
|
|
}
|
|
w->ypos=ip;
|
|
for (y=length;--y>=0;) *ip++ = -1;
|
|
}
|
|
signal(SIGINT, quit);
|
|
tputs(tgetstr("ti",&tcp),1,fputchar);
|
|
tputs(tgetstr("cl",&tcp),1,fputchar);
|
|
if (field) {
|
|
register char *p;
|
|
p=field;
|
|
for (y=bottom;--y>=0;) {
|
|
for (x=CO;--x>=0;) {
|
|
putchar(*p++);
|
|
if (!*p) p=field;
|
|
}
|
|
if (!Wrap) putchar('\n');
|
|
fflush(stdout);
|
|
}
|
|
if (Wrap) {
|
|
if (IM&&!IN) {
|
|
for (x=last;--x>0;) {
|
|
putchar(*p++);
|
|
if (!*p) p=field;
|
|
}
|
|
y= *p++; if (!*p) p=field;
|
|
putchar(*p);
|
|
if (BC) tputs(BC,1,fputchar);
|
|
else cursor(last-1,bottom);
|
|
tputs(IM,1,fputchar);
|
|
if (IC) tputs(IC,1,fputchar);
|
|
putchar(y);
|
|
if (IP) tputs(IP,1,fputchar);
|
|
tputs(EI,1,fputchar);
|
|
}
|
|
else if (SR||AL) {
|
|
if (HO) tputs(HO,1,fputchar);
|
|
else cursor(0,0);
|
|
if (SR) tputs(SR,1,fputchar);
|
|
else tputs(AL,LI,fputchar);
|
|
for (x=CO;--x>=0;) {
|
|
putchar(*p++);
|
|
if (!*p) p=field;
|
|
}
|
|
}
|
|
else for (x=last;--x>=0;) {
|
|
putchar(*p++);
|
|
if (!*p) p=field;
|
|
}
|
|
}
|
|
else for (x=CO;--x>=0;) {
|
|
putchar(*p++);
|
|
if (!*p) p=field;
|
|
}
|
|
}
|
|
fflush(stdout);
|
|
for (;;) {
|
|
for (n=0,w= &worm[0];n<number;n++,w++) {
|
|
if ((x=w->xpos[h=w->head])<0) {
|
|
cursor(x=w->xpos[h]=0,y=w->ypos[h]=bottom);
|
|
putchar(flavor[n%6]);
|
|
ref[y][x]++;
|
|
}
|
|
else y=w->ypos[h];
|
|
if (++h==length) h=0;
|
|
if (w->xpos[w->head=h]>=0) {
|
|
register int x1, y1;
|
|
x1=w->xpos[h]; y1=w->ypos[h];
|
|
if (--ref[y1][x1]==0) {
|
|
cursor(x1,y1); putchar(trail);
|
|
}
|
|
}
|
|
op= &(x==0 ? (y==0 ? upleft : (y==bottom ? lowleft : left)) :
|
|
(x==last ? (y==0 ? upright : (y==bottom ? lowright : right)) :
|
|
(y==0 ? upper : (y==bottom ? lower : normal))))[w->orientation];
|
|
switch (op->nopts) {
|
|
case 0:
|
|
fflush(stdout);
|
|
abort();
|
|
exit(0); /* just in case the abort fails? */
|
|
case 1:
|
|
w->orientation=op->opts[0];
|
|
break;
|
|
default:
|
|
w->orientation=op->opts[(int)(ranf()*(float)op->nopts)];
|
|
}
|
|
cursor(x+=xinc[w->orientation], y+=yinc[w->orientation]);
|
|
if (!Wrap||x!=last||y!=bottom) putchar(flavor[n%6]);
|
|
ref[w->ypos[h]=y][w->xpos[h]=x]++;
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
quit()
|
|
{
|
|
signal(SIGINT, SIG_IGN);
|
|
cursor(0,LI-1);
|
|
tputs(TE,1,fputchar);
|
|
exit(0);
|
|
}
|
|
fputchar(c)
|
|
char c;
|
|
{
|
|
putchar(c);
|
|
}
|
|
float ranf() {
|
|
#ifdef BSD
|
|
return((float)rand()/2147483647.);
|
|
#else
|
|
return((float)rand()/32767.);
|
|
#endif
|
|
}
|