projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| af359dea C |
1 | .\" Copyright (c) 1980 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 3 | .\" | |
| c0567266 KB |
4 | .\" Redistribution and use in source and binary forms, with or without |
| 5 | .\" modification, are permitted provided that the following conditions | |
| 6 | .\" are met: | |
| 7 | .\" 1. Redistributions of source code must retain the above copyright | |
| 8 | .\" notice, this list of conditions and the following disclaimer. | |
| 9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | .\" notice, this list of conditions and the following disclaimer in the | |
| 11 | .\" documentation and/or other materials provided with the distribution. | |
| 12 | .\" 3. All advertising materials mentioning features or use of this software | |
| 13 | .\" must display the following acknowledgement: | |
| 14 | .\" This product includes software developed by the University of | |
| 15 | .\" California, Berkeley and its contributors. | |
| 16 | .\" 4. Neither the name of the University nor the names of its contributors | |
| 17 | .\" may be used to endorse or promote products derived from this software | |
| 18 | .\" without specific prior written permission. | |
| 19 | .\" | |
| 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | .\" SUCH DAMAGE. | |
| af359dea C |
31 | .\" |
| 32 | .\" @(#)twinkle2.c 6.3 (Berkeley) 4/17/91 | |
| 33 | .\" | |
| df5a607f | 34 | extern int _putchar(); |
| c8df485c | 35 | |
| df5a607f KM |
36 | main() |
| 37 | { | |
| c8df485c | 38 | reg char *sp; |
| c8df485c KM |
39 | |
| 40 | srand(getpid()); /* initialize random sequence */ | |
| 41 | ||
| 42 | if (isatty(0)) { | |
| 43 | gettmode(); | |
| df5a607f | 44 | if ((sp = getenv("TERM")) != NULL) |
| c8df485c KM |
45 | setterm(sp); |
| 46 | signal(SIGINT, die); | |
| 47 | } | |
| 48 | else { | |
| 49 | printf("Need a terminal on %d\n", _tty_ch); | |
| 50 | exit(1); | |
| 51 | } | |
| 52 | _puts(TI); | |
| 53 | _puts(VS); | |
| 54 | ||
| 55 | noecho(); | |
| 56 | nonl(); | |
| 57 | tputs(CL, NLINES, _putchar); | |
| 58 | for (;;) { | |
| 59 | makeboard(); /* make the board setup */ | |
| 60 | puton('*'); /* put on '*'s */ | |
| 61 | puton(' '); /* cover up with ' 's */ | |
| 62 | } | |
| 63 | } | |
| 64 | ||
| c8df485c | 65 | puton(ch) |
| df5a607f KM |
66 | char ch; |
| 67 | { | |
| c8df485c KM |
68 | reg LOCS *lp; |
| 69 | reg int r; | |
| 70 | reg LOCS *end; | |
| 71 | LOCS temp; | |
| df5a607f | 72 | static int lasty, lastx; |
| c8df485c KM |
73 | |
| 74 | end = &Layout[Numstars]; | |
| 75 | for (lp = Layout; lp < end; lp++) { | |
| 76 | r = rand() % Numstars; | |
| 77 | temp = *lp; | |
| 78 | *lp = Layout[r]; | |
| 79 | Layout[r] = temp; | |
| 80 | } | |
| 81 | ||
| 82 | for (lp = Layout; lp < end; lp++) | |
| 83 | /* prevent scrolling */ | |
| 84 | if (!AM || (lp->y < NLINES - 1 || lp->x < NCOLS - 1)) { | |
| 85 | mvcur(lasty, lastx, lp->y, lp->x); | |
| 86 | putchar(ch); | |
| 87 | lasty = lp->y; | |
| 88 | if ((lastx = lp->x + 1) >= NCOLS) | |
| 89 | if (AM) { | |
| 90 | lastx = 0; | |
| 91 | lasty++; | |
| 92 | } | |
| 93 | else | |
| 94 | lastx = NCOLS - 1; | |
| 95 | } | |
| 96 | } |