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Annotation of 43BSD/games/trek/visual.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)visual.c   5.1 (Berkeley) 1/29/86";
        !             9: #endif not lint
        !            10: 
        !            11: # include      "trek.h"
        !            12: 
        !            13: /*
        !            14: **  VISUAL SCAN
        !            15: **
        !            16: **     A visual scan is made in a particular direction of three sectors
        !            17: **     in the general direction specified.  This takes time, and
        !            18: **     Klingons can attack you, so it should be done only when sensors
        !            19: **     are out.
        !            20: */
        !            21: 
        !            22: /* This struct[] has the delta x, delta y for particular directions */
        !            23: struct xy      Visdelta[11] =
        !            24: {
        !            25:        -1,     -1,
        !            26:        -1,      0,
        !            27:        -1,      1,
        !            28:         0,      1,
        !            29:         1,      1,
        !            30:         1,      0,
        !            31:         1,     -1,
        !            32:         0,     -1,
        !            33:        -1,     -1,
        !            34:        -1,      0,
        !            35:        -1,      1
        !            36: };
        !            37: 
        !            38: visual()
        !            39: {
        !            40:        register int            ix, iy;
        !            41:        int                     co;
        !            42:        register struct xy      *v;
        !            43: 
        !            44:        co = getintpar("direction");
        !            45:        if (co < 0 || co > 360)
        !            46:                return;
        !            47:        co = (co + 22) / 45;
        !            48:        v = &Visdelta[co];
        !            49:        ix = Ship.sectx + v->x;
        !            50:        iy = Ship.secty + v->y;
        !            51:        if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
        !            52:                co = '?';
        !            53:        else
        !            54:                co = Sect[ix][iy];
        !            55:        printf("%d,%d %c ", ix, iy, co);
        !            56:        v++;
        !            57:        ix = Ship.sectx + v->x;
        !            58:        iy = Ship.secty + v->y;
        !            59:        if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
        !            60:                co = '?';
        !            61:        else
        !            62:                co = Sect[ix][iy];
        !            63:        printf("%c ", co);
        !            64:        v++;
        !            65:        ix = Ship.sectx + v->x;
        !            66:        iy = Ship.secty + v->y;
        !            67:        if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
        !            68:                co = '?';
        !            69:        else
        !            70:                co = Sect[ix][iy];
        !            71:        printf("%c %d,%d\n", co, ix, iy);
        !            72:        Move.time = 0.05;
        !            73:        Move.free = 0;
        !            74: }

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