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https://github.com/GnoConsortium/gno.git
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97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
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.\" Copyright (c) 1980, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)twinkle2.c 8.1 (Berkeley) 6/8/93
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.\"
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extern int _putchar();
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main()
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{
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reg char *sp;
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srand(getpid()); /* initialize random sequence */
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if (isatty(0)) {
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gettmode();
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if ((sp = getenv("TERM")) != NULL)
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setterm(sp);
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signal(SIGINT, die);
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}
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else {
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printf("Need a terminal on %d\n", _tty_ch);
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exit(1);
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}
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_puts(TI);
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_puts(VS);
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noecho();
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nonl();
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tputs(CL, NLINES, _putchar);
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for (;;) {
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makeboard(); /* make the board setup */
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puton('*'); /* put on '*'s */
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puton(' '); /* cover up with ' 's */
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}
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}
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puton(ch)
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char ch;
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{
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reg LOCS *lp;
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reg int r;
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reg LOCS *end;
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LOCS temp;
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static int lasty, lastx;
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end = &Layout[Numstars];
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for (lp = Layout; lp < end; lp++) {
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r = rand() % Numstars;
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temp = *lp;
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*lp = Layout[r];
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Layout[r] = temp;
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}
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for (lp = Layout; lp < end; lp++)
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/* prevent scrolling */
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if (!AM || (lp->y < NLINES - 1 || lp->x < NCOLS - 1)) {
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mvcur(lasty, lastx, lp->y, lp->x);
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putchar(ch);
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lasty = lp->y;
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if ((lastx = lp->x + 1) >= NCOLS)
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if (AM) {
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lastx = 0;
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lasty++;
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}
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else
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lastx = NCOLS - 1;
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}
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}
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