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Annotation of 43BSDReno/games/robots/rnd_pos.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)rnd_pos.c  5.4 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: # include      "robots.h"
        !            25: 
        !            26: # define       IS_SAME(p,y,x)  ((p).y != -1 && (p).y == y && (p).x == x)
        !            27: 
        !            28: /*
        !            29:  * rnd_pos:
        !            30:  *     Pick a random, unoccupied position
        !            31:  */
        !            32: COORD *
        !            33: rnd_pos()
        !            34: {
        !            35:        static COORD    pos;
        !            36:        static int      call = 0;
        !            37:        register int    i = 0;
        !            38: 
        !            39:        do {
        !            40:                pos.y = rnd(Y_FIELDSIZE - 1) + 1;
        !            41:                pos.x = rnd(X_FIELDSIZE - 1) + 1;
        !            42:                refresh();
        !            43:        } while (Field[pos.y][pos.x] != 0);
        !            44:        call++;
        !            45:        return &pos;
        !            46: }
        !            47: 
        !            48: rnd(range)
        !            49: int    range;
        !            50: {
        !            51:        unsigned int    rand();
        !            52: 
        !            53:        return rand() % range;
        !            54: }

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