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Annotation of 42BSD/games/trek/snova.c, revision 1.1.1.1

1.1       root        1: #ifndef lint
                      2: static char sccsid[] = "@(#)snova.c    4.2     (Berkeley)      5/9/83";
                      3: #endif not lint
                      4: 
                      5: # include      "trek.h"
                      6: 
                      7: /*
                      8: **  CAUSE SUPERNOVA TO OCCUR
                      9: **
                     10: **     A supernova occurs.  If 'ix' < 0, a random quadrant is chosen;
                     11: **     otherwise, the current quadrant is taken, and (ix, iy) give
                     12: **     the sector quadrants of the star which is blowing up.
                     13: **
                     14: **     If the supernova turns out to be in the quadrant you are in,
                     15: **     you go into "emergency override mode", which tries to get you
                     16: **     out of the quadrant as fast as possible.  However, if you
                     17: **     don't have enough fuel, or if you by chance run into something,
                     18: **     or some such thing, you blow up anyway.  Oh yeh, if you are
                     19: **     within two sectors of the star, there is nothing that can
                     20: **     be done for you.
                     21: **
                     22: **     When a star has gone supernova, the quadrant becomes uninhab-
                     23: **     itable for the rest of eternity, i.e., the game.  If you ever
                     24: **     try stopping in such a quadrant, you will go into emergency
                     25: **     override mode.
                     26: */
                     27: 
                     28: snova(x, y)
                     29: int    x, y;
                     30: {
                     31:        int                     qx, qy;
                     32:        register int            ix, iy;
                     33:        int                     f;
                     34:        int                     dx, dy;
                     35:        int                     n;
                     36:        register struct quad    *q;
                     37: 
                     38:        f = 0;
                     39:        ix = x;
                     40:        if (ix < 0)
                     41:        {
                     42:                /* choose a quadrant */
                     43:                while (1)
                     44:                {
                     45:                        qx = ranf(NQUADS);
                     46:                        qy = ranf(NQUADS);
                     47:                        q = &Quad[qx][qy];
                     48:                        if (q->stars > 0)
                     49:                                break;
                     50:                }
                     51:                if (Ship.quadx == qx && Ship.quady == qy)
                     52:                {
                     53:                        /* select a particular star */
                     54:                        n = ranf(q->stars);
                     55:                        for (ix = 0; ix < NSECTS; ix++)
                     56:                        {
                     57:                                for (iy = 0; iy < NSECTS; iy++)
                     58:                                        if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
                     59:                                                if ((n -= 1) <= 0)
                     60:                                                        break;
                     61:                                if (n <= 0)
                     62:                                        break;
                     63:                        }
                     64:                        f = 1;
                     65:                }
                     66:        }
                     67:        else
                     68:        {
                     69:                /* current quadrant */
                     70:                iy = y;
                     71:                qx = Ship.quadx;
                     72:                qy = Ship.quady;
                     73:                q = &Quad[qx][qy];
                     74:                f = 1;
                     75:        }
                     76:        if (f)
                     77:        {
                     78:                /* supernova is in same quadrant as Enterprise */
                     79:                printf("\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
                     80:                dx = ix - Ship.sectx;
                     81:                dy = iy - Ship.secty;
                     82:                if (dx * dx + dy * dy <= 2)
                     83:                {
                     84:                        printf("***  Emergency override attem");
                     85:                        sleep(1);
                     86:                        printf("\n");
                     87:                        lose(L_SNOVA);
                     88:                }
                     89:                q->scanned = 1000;
                     90:        }
                     91:        else
                     92:        {
                     93:                if (!damaged(SSRADIO))
                     94:                {
                     95:                        q->scanned = 1000;
                     96:                        printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
                     97:                        printf("  in quadrant %d,%d.  Caution is advised\n", qx, qy);
                     98:                }
                     99:        }
                    100: 
                    101:        /* clear out the supernova'ed quadrant */
                    102:        dx = q->klings;
                    103:        dy = q->stars;
                    104:        Now.klings -= dx;
                    105:        if (x >= 0)
                    106:        {
                    107:                /* Enterprise caused supernova */
                    108:                Game.kills += dy;
                    109:                if (q->bases)
                    110:                        killb(qx, qy, -1);
                    111:                Game.killk += dx;
                    112:        }
                    113:        else
                    114:                if (q->bases)
                    115:                        killb(qx, qy, 0);
                    116:        killd(qx, qy, (x >= 0));
                    117:        q->stars = -1;
                    118:        q->klings = 0;
                    119:        if (Now.klings <= 0)
                    120:        {
                    121:                printf("Lucky devil, that supernova destroyed the last klingon\n");
                    122:                win();
                    123:        }
                    124:        return;
                    125: }

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