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author | cgd <cgd@NetBSD.org> | 1993-03-21 09:45:37 +0000 |
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committer | cgd <cgd@NetBSD.org> | 1993-03-21 09:45:37 +0000 |
commit | 77e3814f0c0e3dea4d0032e25666f77e6f83bfff (patch) | |
tree | 7eddfcbf3dd12089e71dc3fafb0a106c5c5766c7 /robots/rnd_pos.c | |
parent | e81d63576b2e46ab90da7d75fa155ea57ee4d32e (diff) | |
download | bsdgames-darwin-77e3814f0c0e3dea4d0032e25666f77e6f83bfff.tar.gz bsdgames-darwin-77e3814f0c0e3dea4d0032e25666f77e6f83bfff.tar.zst bsdgames-darwin-77e3814f0c0e3dea4d0032e25666f77e6f83bfff.zip |
initial import of 386bsd-0.1 sources
Diffstat (limited to 'robots/rnd_pos.c')
-rw-r--r-- | robots/rnd_pos.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/robots/rnd_pos.c b/robots/rnd_pos.c new file mode 100644 index 00000000..0e49ff50 --- /dev/null +++ b/robots/rnd_pos.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 1980 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. + */ + +#ifndef lint +static char sccsid[] = "@(#)rnd_pos.c 5.4 (Berkeley) 6/1/90"; +#endif /* not lint */ + +# include "robots.h" + +# define IS_SAME(p,y,x) ((p).y != -1 && (p).y == y && (p).x == x) + +/* + * rnd_pos: + * Pick a random, unoccupied position + */ +COORD * +rnd_pos() +{ + static COORD pos; + static int call = 0; + register int i = 0; + + do { + pos.y = rnd(Y_FIELDSIZE - 1) + 1; + pos.x = rnd(X_FIELDSIZE - 1) + 1; + refresh(); + } while (Field[pos.y][pos.x] != 0); + call++; + return &pos; +} + +rnd(range) +int range; +{ + unsigned int rand(); + + return rand() % range; +} |