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Annotation of 43BSDTahoe/games/trek/snova.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[] = "@(#)snova.c    5.3 (Berkeley) 6/18/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: # include      "trek.h"
        !            23: 
        !            24: /*
        !            25: **  CAUSE SUPERNOVA TO OCCUR
        !            26: **
        !            27: **     A supernova occurs.  If 'ix' < 0, a random quadrant is chosen;
        !            28: **     otherwise, the current quadrant is taken, and (ix, iy) give
        !            29: **     the sector quadrants of the star which is blowing up.
        !            30: **
        !            31: **     If the supernova turns out to be in the quadrant you are in,
        !            32: **     you go into "emergency override mode", which tries to get you
        !            33: **     out of the quadrant as fast as possible.  However, if you
        !            34: **     don't have enough fuel, or if you by chance run into something,
        !            35: **     or some such thing, you blow up anyway.  Oh yeh, if you are
        !            36: **     within two sectors of the star, there is nothing that can
        !            37: **     be done for you.
        !            38: **
        !            39: **     When a star has gone supernova, the quadrant becomes uninhab-
        !            40: **     itable for the rest of eternity, i.e., the game.  If you ever
        !            41: **     try stopping in such a quadrant, you will go into emergency
        !            42: **     override mode.
        !            43: */
        !            44: 
        !            45: snova(x, y)
        !            46: int    x, y;
        !            47: {
        !            48:        int                     qx, qy;
        !            49:        register int            ix, iy;
        !            50:        int                     f;
        !            51:        int                     dx, dy;
        !            52:        int                     n;
        !            53:        register struct quad    *q;
        !            54: 
        !            55:        f = 0;
        !            56:        ix = x;
        !            57:        if (ix < 0)
        !            58:        {
        !            59:                /* choose a quadrant */
        !            60:                while (1)
        !            61:                {
        !            62:                        qx = ranf(NQUADS);
        !            63:                        qy = ranf(NQUADS);
        !            64:                        q = &Quad[qx][qy];
        !            65:                        if (q->stars > 0)
        !            66:                                break;
        !            67:                }
        !            68:                if (Ship.quadx == qx && Ship.quady == qy)
        !            69:                {
        !            70:                        /* select a particular star */
        !            71:                        n = ranf(q->stars);
        !            72:                        for (ix = 0; ix < NSECTS; ix++)
        !            73:                        {
        !            74:                                for (iy = 0; iy < NSECTS; iy++)
        !            75:                                        if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
        !            76:                                                if ((n -= 1) <= 0)
        !            77:                                                        break;
        !            78:                                if (n <= 0)
        !            79:                                        break;
        !            80:                        }
        !            81:                        f = 1;
        !            82:                }
        !            83:        }
        !            84:        else
        !            85:        {
        !            86:                /* current quadrant */
        !            87:                iy = y;
        !            88:                qx = Ship.quadx;
        !            89:                qy = Ship.quady;
        !            90:                q = &Quad[qx][qy];
        !            91:                f = 1;
        !            92:        }
        !            93:        if (f)
        !            94:        {
        !            95:                /* supernova is in same quadrant as Enterprise */
        !            96:                printf("\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
        !            97:                dx = ix - Ship.sectx;
        !            98:                dy = iy - Ship.secty;
        !            99:                if (dx * dx + dy * dy <= 2)
        !           100:                {
        !           101:                        printf("***  Emergency override attem");
        !           102:                        sleep(1);
        !           103:                        printf("\n");
        !           104:                        lose(L_SNOVA);
        !           105:                }
        !           106:                q->scanned = 1000;
        !           107:        }
        !           108:        else
        !           109:        {
        !           110:                if (!damaged(SSRADIO))
        !           111:                {
        !           112:                        q->scanned = 1000;
        !           113:                        printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
        !           114:                        printf("  in quadrant %d,%d.  Caution is advised\n", qx, qy);
        !           115:                }
        !           116:        }
        !           117: 
        !           118:        /* clear out the supernova'ed quadrant */
        !           119:        dx = q->klings;
        !           120:        dy = q->stars;
        !           121:        Now.klings -= dx;
        !           122:        if (x >= 0)
        !           123:        {
        !           124:                /* Enterprise caused supernova */
        !           125:                Game.kills += dy;
        !           126:                if (q->bases)
        !           127:                        killb(qx, qy, -1);
        !           128:                Game.killk += dx;
        !           129:        }
        !           130:        else
        !           131:                if (q->bases)
        !           132:                        killb(qx, qy, 0);
        !           133:        killd(qx, qy, (x >= 0));
        !           134:        q->stars = -1;
        !           135:        q->klings = 0;
        !           136:        if (Now.klings <= 0)
        !           137:        {
        !           138:                printf("Lucky devil, that supernova destroyed the last klingon\n");
        !           139:                win();
        !           140:        }
        !           141:        return;
        !           142: }

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