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Annotation of 43BSDTahoe/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 the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)rnd_pos.c  5.3 (Berkeley) 6/18/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: # include      "robots.h"
        !            23: 
        !            24: # define       IS_SAME(p,y,x)  ((p).y != -1 && (p).y == y && (p).x == x)
        !            25: 
        !            26: /*
        !            27:  * rnd_pos:
        !            28:  *     Pick a random, unoccupied position
        !            29:  */
        !            30: COORD *
        !            31: rnd_pos()
        !            32: {
        !            33:        static COORD    pos;
        !            34:        static int      call = 0;
        !            35:        register int    i = 0;
        !            36: 
        !            37:        do {
        !            38:                pos.y = rnd(Y_FIELDSIZE - 1) + 1;
        !            39:                pos.x = rnd(X_FIELDSIZE - 1) + 1;
        !            40:                refresh();
        !            41:        } while (Field[pos.y][pos.x] != 0);
        !            42:        call++;
        !            43:        return &pos;
        !            44: }
        !            45: 
        !            46: rnd(range)
        !            47: int    range;
        !            48: {
        !            49:        unsigned int    rand();
        !            50: 
        !            51:        return rand() % range;
        !            52: }

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