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Annotation of 43BSDTahoe/games/trek/snova.c, revision 1.1.1.1

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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