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Diffstat (limited to 'lib/libcurses/PSD.doc/twinkle1.c')
| -rw-r--r-- | lib/libcurses/PSD.doc/twinkle1.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/lib/libcurses/PSD.doc/twinkle1.c b/lib/libcurses/PSD.doc/twinkle1.c deleted file mode 100644 index 7d3d00d..0000000 --- a/lib/libcurses/PSD.doc/twinkle1.c +++ /dev/null @@ -1,157 +0,0 @@ -.\" 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. -.\" -.\" @(#)twinkle1.c 8.1 (Berkeley) 6/8/93 -.\" -# include <curses.h> -# include <signal.h> - -/* - * the idea for this program was a product of the imagination of - * Kurt Schoens. Not responsible for minds lost or stolen. - */ - -# define NCOLS 80 -# define NLINES 24 -# define MAXPATTERNS 4 - -typedef struct { - int y, x; -} LOCS; - -LOCS Layout[NCOLS * NLINES]; /* current board layout */ - -int Pattern, /* current pattern number */ - Numstars; /* number of stars in pattern */ - -char *getenv(); - -int die(); - -main() -{ - srand(getpid()); /* initialize random sequence */ - - initscr(); - signal(SIGINT, die); - noecho(); - nonl(); - leaveok(stdscr, TRUE); - scrollok(stdscr, FALSE); - - for (;;) { - makeboard(); /* make the board setup */ - puton('*'); /* put on '*'s */ - puton(' '); /* cover up with ' 's */ - } -} - -/* - * On program exit, move the cursor to the lower left corner by - * direct addressing, since current location is not guaranteed. - * We lie and say we used to be at the upper right corner to guarantee - * absolute addressing. - */ -die() -{ - signal(SIGINT, SIG_IGN); - mvcur(0, COLS - 1, LINES - 1, 0); - endwin(); - exit(0); -} - - -/* - * Make the current board setup. It picks a random pattern and - * calls ison() to determine if the character is on that pattern - * or not. - */ -makeboard() -{ - reg int y, x; - reg LOCS *lp; - - Pattern = rand() % MAXPATTERNS; - lp = Layout; - for (y = 0; y < NLINES; y++) - for (x = 0; x < NCOLS; x++) - if (ison(y, x)) { - lp->y = y; - lp->x = x; - lp++; - } - Numstars = lp - Layout; -} - -/* - * Return TRUE if (y, x) is on the current pattern. - */ -ison(y, x) -reg int y, x; { - - switch (Pattern) { - case 0: /* alternating lines */ - return !(y & 01); - case 1: /* box */ - if (x >= LINES && y >= NCOLS) - return FALSE; - if (y < 3 || y >= NLINES - 3) - return TRUE; - return (x < 3 || x >= NCOLS - 3); - case 2: /* holy pattern! */ - return ((x + y) & 01); - case 3: /* bar across center */ - return (y >= 9 && y <= 15); - } - /* NOTREACHED */ -} - -puton(ch) -reg char ch; -{ - reg LOCS *lp; - reg int r; - reg LOCS *end; - LOCS temp; - - 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++) { - mvaddch(lp->y, lp->x, ch); - refresh(); - } -} |
