games-request@tekred.UUCP (04/17/87)
Submitted by: seismo!ut-sally!shell!neuro1!hyd-ptd!peter
Mod.sources.games: Volume 1, Issue 2
Archive-name: rot
[This was originally posted to net.bizarre back in July 1985.
I have compiled and run this sucessfully on our 4.3bsd Vax
and don't see any particular machine/os dependencies, other
than requiring term{lib|cap}. -br ]
#! /bin/sh
# This is a shell archive. Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file". To overwrite existing
# files, type "sh file -c". You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g.. If this archive is complete, you
# will see the following message at the end:
# "End of shell archive."
# Contents: README Makefile rot.c
# Wrapped by billr@tekred on Fri Apr 17 14:20:46 1987
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f README -a "${1}" != "-c" ; then
echo shar: Will not over-write existing file \"README\"
else
echo shar: Extracting \"README\" \(455 characters\)
sed "s/^X//" >README <<'END_OF_README'
XThis program cascades letters from the top of the terminal screen
Xto the bottom in a waterfall effect. There was a note in the
Xoriginal posting about this program not working on terminals that
Xrequire padding (PC is read but not used). Also, this will be
Xpretty slow at lower baudrates.
X
X--
XOriginal source from:
X
X Peter da Silva (ihnp4!shell!neuro1!{hyd-ptd,datafact,baylor}!peter)
X
XMakefile and README from:
X
X Bill Randle (billr@tekred.TEK.COM)
END_OF_README
if test 455 -ne `wc -c <README`; then
echo shar: \"README\" unpacked with wrong size!
fi
# end of overwriting check
fi
if test -f Makefile -a "${1}" != "-c" ; then
echo shar: Will not over-write existing file \"Makefile\"
else
echo shar: Extracting \"Makefile\" \(99 characters\)
sed "s/^X//" >Makefile <<'END_OF_Makefile'
X# Simple makefile for rot program
X
Xrot: rot.c
X cc -O -o rot rot.c -ltermlib
X
Xtest: rot
X rot <rot.c
END_OF_Makefile
if test 99 -ne `wc -c <Makefile`; then
echo shar: \"Makefile\" unpacked with wrong size!
fi
# end of overwriting check
fi
if test -f rot.c -a "${1}" != "-c" ; then
echo shar: Will not over-write existing file \"rot.c\"
else
echo shar: Extracting \"rot.c\" \(7528 characters\)
sed "s/^X//" >rot.c <<'END_OF_rot.c'
X#include <stdio.h>
X
X/* -- Miscellaneous defines -- */
X#define FALSE 0
X#define TRUE 1
X#define MAXCOL 80
X#define MAXLI 24
X
Xextern char *tgetstr();
X
Xint lastx, lasty;
Xstruct _c {
X struct _c *c_next;
X int c_line, c_column;
X char c_mark;
X} *clist;
X
X/* -- Global variables -- */
Xchar *tent; /* Pointer to tbuf */
Xchar *PC; /* Pad character */
Xchar *UP, *BC; /* Upline, backsapce character */
Xshort ospeed; /* Terminal output speed */
Xint tglen;
X
Xchar *cm, /* Cursor motion */
X *cl, /* Clear screen */
X *ti, /* Init terminal */
X *te; /* Reset terminal */
Xint li, /* lines on screen */
X co; /* columns ditto */
Xchar screen[MAXLI+1][MAXCOL];
Xchar newscreen[MAXLI+1][MAXCOL];
X
Xmain(ac, av)
Xint ac;
Xchar **av;
X{
X srand(getpid());
X tinit(getenv("TERM"));
X if(av[1])
X while(*++av)
X dropf(*av);
X else
X fdropf(stdin);
X tend();
X}
X
Xat(x, y, c)
Xint x, y;
Xchar c;
X{
X#ifdef DEBUG
X _at(x, y);
X#else
X if(y==lasty) {
X if(x!=lastx) {
X if(x<lastx && lastx-x<tglen)
X while(x<lastx) {
X putchar('\b');
X lastx--;
X }
X else if(x>lastx && x-lastx<tglen)
X while(x>lastx) {
X putchar(newscreen[lasty][lastx]);
X lastx++;
X }
X else
X _at(x, y);
X }
X } else
X _at(x, y);
X#endif
X c &= ~0200;
X putchar(c);
X if(c >= ' ' && c != '\177')
X lastx++;
X if(lastx>=co) {
X lastx -= co;
X lasty++;
X }
X}
X
X_at(x, y)
Xint x, y;
X{
X outs(tgoto(cm, x, y));
X lastx = x;
X lasty = y;
X}
X
Xtinit(name)
Xchar *name;
X{
X static char junkbuf[1024], *junkptr;
X char tbuf[1024];
X int intr();
X
X junkptr = junkbuf;
X
X tgetent(tbuf, name);
X
X PC = tgetstr("pc", &junkptr);
X UP = tgetstr("up", &junkptr);
X BC = tgetstr("bc", &junkptr);
X cm = tgetstr("cm", &junkptr);
X cl = tgetstr("cl", &junkptr);
X ti = tgetstr("ti", &junkptr);
X te = tgetstr("te", &junkptr);
X li = min(tgetnum("li"), MAXLI);
X co = min(tgetnum("co"), MAXCOL);
X tglen = strlen(tgoto(co-1, li-1));
X}
X
Xtend()
X{
X outs(te);
X _at(0, li-1);
X putchar('\n');
X fflush(stdout);
X}
X
Xreadscreen(fp)
XFILE *fp;
X{
X int line, column, p;
X char tmp[256];
X
X for(line=0; line<li; line++)
X for(column=0; column<co; column++)
X newscreen[line][column] = screen[line][column] = ' ';
X for(column=0; column<co; column++)
X newscreen[li][column] = screen[li][column] = '*';
X line=0;
X while(line<li) {
X if(!fgets(tmp, 256, fp))
X return;
X
X for(column=0, p=0; tmp[p]; p++) {
X tmp[p] &= ~0200;
X if(tmp[p] < ' ' || tmp[p] == 127)
X switch(tmp[p]) {
X case '\t':
X while(++column % 8)
X continue;
X break;
X case '\n':
X column = 0;
X line++;
X break;
X default:
X newscreen[line][column] = '^';
X column++;
X if(column>=co) {
X column -= co;
X line++;
X }
X newscreen[line][column] =
X (tmp[p]+'@') & 127;
X column++;
X break;
X }
X else {
X newscreen[line][column] = tmp[p];
X column++;
X }
X if(column >= co) {
X column -= co;
X line++;
X }
X if(line >= li)
X break;
X }
X }
X for(column=0; column<co; column++)
X newscreen[line][column] = screen[li][column] = '*';
X}
X
Xdrawscreen()
X{
X lastx = lasty = 0;
X outs(cl);
X update();
X}
X
Xupdate() /* copy new screen back to old screen */
X{
X int l, c;
X
X for(l=0; l<li; l++)
X for(c=0; c<co; c++)
X if(screen[l][c] != newscreen[l][c]) {
X if((screen[l][c] & ~0200) !=
X (newscreen[l][c] & ~0200))
X at(c, l, newscreen[l][c]);
X screen[l][c] = newscreen[l][c];
X }
X}
X
Xdrop(line, column)
Xint line, column;
X{
X struct _c *hold;
X
X if(line<0 || line>=li || column<0 || column>=co ||
X (line>=li-2 && column >= co-1) || /* scroll potential */
X screen[line][column]==' ' || /* empty */
X screen[line][column] & 0200) /* already in list */
X return;
X if(screen[line+1][column]!=' ' &&
X (column==co-1 ||screen[line+1][column+1]!=' ') &&
X (column==0 ||screen[line+1][column-1]!=' '))
X return;
X
X hold = (struct _c *) malloc(sizeof(struct _c));
X hold -> c_next = clist;
X hold -> c_column = column;
X hold -> c_line = line;
X hold -> c_mark = 0;
X screen[line][column] |= 0200;
X clist = hold;
X}
X
Xdrops()
X{
X int l, c;
X struct _c *hold;
X for(hold = clist; hold; hold=hold->c_next) {
X int line = hold->c_line, column=hold->c_column;
X if(line>= li-2 && column>=co-1) {
X newscreen[line][column] &= ~0200;
X screen[line][column] &= ~0200;
X hold->c_mark = 1;
X continue;
X }
X drop(line+1, column);
X drop(line, column+1);
X drop(line-1, column);
X drop(line, column-1);
X if(newscreen[line+1][column]==' ') {
X newscreen[line+1][column] = screen[line][column];
X newscreen[line][column] = ' ';
X line++;
X } else if(rand()&01000) {
X if(column>0 && newscreen[line][column-1] == ' ' &&
X newscreen[line+1][column-1]==' ') {
X newscreen[line][column-1] =
X screen[line][column];
X newscreen[line][column] = ' ';
X column--;
X }
X else if(column<co-1 &&
X newscreen[line][column+1] == ' ' &&
X newscreen[line+1][column+1]==' ') {
X newscreen[line][column+1] =
X screen[line][column];
X newscreen[line][column] = ' ';
X column++;
X }
X else {
X screen[line][column] &= ~0200;
X newscreen[line][column] &= ~0200;
X hold -> c_mark = 1;
X }
X } else {
X if(column<co-1 && newscreen[line][column+1] == ' ' &&
X newscreen[line+1][column+1]==' ') {
X newscreen[line][column+1] =
X screen[line][column];
X newscreen[line][column] = ' ';
X column++;
X }
X else if(column>0 && newscreen[line][column-1] == ' ' &&
X newscreen[line+1][column-1]==' ') {
X newscreen[line][column-1] =
X screen[line][column];
X newscreen[line][column] = ' ';
X column--;
X }
X else {
X newscreen[line][column] &= ~0200;
X screen[line][column] &= ~0200;
X hold -> c_mark = 1;
X }
X }
X hold -> c_column = column;
X hold -> c_line = line;
X fflush(stdout);
X }
X
X while(clist && clist->c_mark) {
X struct _c *p = clist;
X clist = clist -> c_next;
X free(p);
X }
X hold = clist;
X while(hold && hold->c_next)
X if(hold->c_next->c_mark) {
X struct _c *p = hold->c_next;
X hold->c_next = p->c_next;
X free(p);
X } else
X hold=hold->c_next;
X}
X
Xdroplet(line, column)
Xint line, column;
X{
X int ret;
X while(column>=0 && screen[line][column]!=' ')
X column--;
X column++;
X while(column<co && screen[line][column]!=' ')
X drop(line, column++);
X ret = clist != 0;
X while(clist) {
X drops();
X update();
X }
X return ret;
X}
X
Xdropscreen()
X{
X int column, line;
X int rubbish = 0, count = 0;
X
X do {
X int start, limit, incr;
X count++;
X rubbish = 0;
X if(count&1) { start=li-2; limit=0; incr = -1; }
X else { start=0; limit=li-2; incr=1; }
X for(line=start; line!=limit && !rubbish; line+=incr) {
X if(line&1)
X for(column=0; column<co && !rubbish; column++)
X rubbish += droplet(line, column);
X else
X for(column=co-1; column>=0 && !rubbish; column--)
X rubbish += droplet(line, column);
X }
X } while(rubbish);
X}
X
Xdropf(file)
Xchar *file;
X{
X FILE *fp;
X
X if(!(fp = fopen(file, "r"))) {
X perror(file);
X return -1;
X }
X fdropf(fp);
X}
X
Xfdropf(fp)
XFILE *fp;
X{
X int i;
X
X while(!feof(fp)) {
X readscreen(fp);
X drawscreen();
X for(i=0; i<20; i++)
X droplet((rand()>>4) % li, (rand()>>4) % co);
X dropscreen();
X }
X}
X
Xouts(s)
Xchar *s;
X{
X fputs(s, stdout);
X}
X
Xmin(a, b)
Xint a, b;
X{
X if(a<b) return a;
X return b;
X}
END_OF_rot.c
if test 7528 -ne `wc -c <rot.c`; then
echo shar: \"rot.c\" unpacked with wrong size!
fi
# end of overwriting check
fi
echo shar: End of shell archive.
exit 0