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- .\" Copyright (c) 1980 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 6.3 (Berkeley) 4/17/91
- .\"
- 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;
- }
- }
-