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71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/* $NetBSD: rnd_pos.c,v 1.5 2003/08/07 09:37:37 agc Exp $ */
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/*
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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. 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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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)rnd_pos.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: rnd_pos.c,v 1.5 2003/08/07 09:37:37 agc Exp $");
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#endif
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#endif /* not lint */
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# include "robots.h"
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# define IS_SAME(p,y,x) ((p).y != -1 && (p).y == y && (p).x == x)
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/*
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* rnd_pos:
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* Pick a random, unoccupied position
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*/
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COORD *
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rnd_pos()
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{
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static COORD pos;
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static int call = 0;
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do {
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pos.y = rnd(Y_FIELDSIZE - 1) + 1;
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pos.x = rnd(X_FIELDSIZE - 1) + 1;
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refresh();
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} while (Field[pos.y][pos.x] != 0);
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call++;
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return &pos;
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}
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int
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rnd(range)
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int range;
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{
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return rand() % range;
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}
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