diff options
Diffstat (limited to 'lib/libcurses/PSD.doc/twinkle2.c')
| -rw-r--r-- | lib/libcurses/PSD.doc/twinkle2.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/lib/libcurses/PSD.doc/twinkle2.c b/lib/libcurses/PSD.doc/twinkle2.c new file mode 100644 index 000000000000..0a25590fcde8 --- /dev/null +++ b/lib/libcurses/PSD.doc/twinkle2.c @@ -0,0 +1,96 @@ +.\" Copyright (c) 1980, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 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 +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)twinkle2.c 8.1 (Berkeley) 6/8/93 +.\" +extern int _putchar(); + +main() +{ + reg char *sp; + + srand(getpid()); /* initialize random sequence */ + + if (isatty(0)) { + gettmode(); + if ((sp = getenv("TERM")) != NULL) + setterm(sp); + signal(SIGINT, die); + } + else { + printf("Need a terminal on %d\n", _tty_ch); + exit(1); + } + _puts(TI); + _puts(VS); + + noecho(); + nonl(); + tputs(CL, NLINES, _putchar); + for (;;) { + makeboard(); /* make the board setup */ + puton('*'); /* put on '*'s */ + puton(' '); /* cover up with ' 's */ + } +} + +puton(ch) +char ch; +{ + reg LOCS *lp; + reg int r; + reg LOCS *end; + LOCS temp; + static int lasty, lastx; + + end = &Layout[Numstars]; + for (lp = Layout; lp < end; lp++) { + r = rand() % Numstars; + temp = *lp; + *lp = Layout[r]; + Layout[r] = temp; + } + + for (lp = Layout; lp < end; lp++) + /* prevent scrolling */ + if (!AM || (lp->y < NLINES - 1 || lp->x < NCOLS - 1)) { + mvcur(lasty, lastx, lp->y, lp->x); + putchar(ch); + lasty = lp->y; + if ((lastx = lp->x + 1) >= NCOLS) + if (AM) { + lastx = 0; + lasty++; + } + else + lastx = NCOLS - 1; + } +} |