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Annotation of 43BSD/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.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: #ifndef lint
                      8: static char sccsid[] = "@(#)snova.c    5.1 (Berkeley) 5/30/85";
                      9: #endif not lint
                     10: 
                     11: # include      "trek.h"
                     12: 
                     13: /*
                     14: **  CAUSE SUPERNOVA TO OCCUR
                     15: **
                     16: **     A supernova occurs.  If 'ix' < 0, a random quadrant is chosen;
                     17: **     otherwise, the current quadrant is taken, and (ix, iy) give
                     18: **     the sector quadrants of the star which is blowing up.
                     19: **
                     20: **     If the supernova turns out to be in the quadrant you are in,
                     21: **     you go into "emergency override mode", which tries to get you
                     22: **     out of the quadrant as fast as possible.  However, if you
                     23: **     don't have enough fuel, or if you by chance run into something,
                     24: **     or some such thing, you blow up anyway.  Oh yeh, if you are
                     25: **     within two sectors of the star, there is nothing that can
                     26: **     be done for you.
                     27: **
                     28: **     When a star has gone supernova, the quadrant becomes uninhab-
                     29: **     itable for the rest of eternity, i.e., the game.  If you ever
                     30: **     try stopping in such a quadrant, you will go into emergency
                     31: **     override mode.
                     32: */
                     33: 
                     34: snova(x, y)
                     35: int    x, y;
                     36: {
                     37:        int                     qx, qy;
                     38:        register int            ix, iy;
                     39:        int                     f;
                     40:        int                     dx, dy;
                     41:        int                     n;
                     42:        register struct quad    *q;
                     43: 
                     44:        f = 0;
                     45:        ix = x;
                     46:        if (ix < 0)
                     47:        {
                     48:                /* choose a quadrant */
                     49:                while (1)
                     50:                {
                     51:                        qx = ranf(NQUADS);
                     52:                        qy = ranf(NQUADS);
                     53:                        q = &Quad[qx][qy];
                     54:                        if (q->stars > 0)
                     55:                                break;
                     56:                }
                     57:                if (Ship.quadx == qx && Ship.quady == qy)
                     58:                {
                     59:                        /* select a particular star */
                     60:                        n = ranf(q->stars);
                     61:                        for (ix = 0; ix < NSECTS; ix++)
                     62:                        {
                     63:                                for (iy = 0; iy < NSECTS; iy++)
                     64:                                        if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
                     65:                                                if ((n -= 1) <= 0)
                     66:                                                        break;
                     67:                                if (n <= 0)
                     68:                                        break;
                     69:                        }
                     70:                        f = 1;
                     71:                }
                     72:        }
                     73:        else
                     74:        {
                     75:                /* current quadrant */
                     76:                iy = y;
                     77:                qx = Ship.quadx;
                     78:                qy = Ship.quady;
                     79:                q = &Quad[qx][qy];
                     80:                f = 1;
                     81:        }
                     82:        if (f)
                     83:        {
                     84:                /* supernova is in same quadrant as Enterprise */
                     85:                printf("\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
                     86:                dx = ix - Ship.sectx;
                     87:                dy = iy - Ship.secty;
                     88:                if (dx * dx + dy * dy <= 2)
                     89:                {
                     90:                        printf("***  Emergency override attem");
                     91:                        sleep(1);
                     92:                        printf("\n");
                     93:                        lose(L_SNOVA);
                     94:                }
                     95:                q->scanned = 1000;
                     96:        }
                     97:        else
                     98:        {
                     99:                if (!damaged(SSRADIO))
                    100:                {
                    101:                        q->scanned = 1000;
                    102:                        printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
                    103:                        printf("  in quadrant %d,%d.  Caution is advised\n", qx, qy);
                    104:                }
                    105:        }
                    106: 
                    107:        /* clear out the supernova'ed quadrant */
                    108:        dx = q->klings;
                    109:        dy = q->stars;
                    110:        Now.klings -= dx;
                    111:        if (x >= 0)
                    112:        {
                    113:                /* Enterprise caused supernova */
                    114:                Game.kills += dy;
                    115:                if (q->bases)
                    116:                        killb(qx, qy, -1);
                    117:                Game.killk += dx;
                    118:        }
                    119:        else
                    120:                if (q->bases)
                    121:                        killb(qx, qy, 0);
                    122:        killd(qx, qy, (x >= 0));
                    123:        q->stars = -1;
                    124:        q->klings = 0;
                    125:        if (Now.klings <= 0)
                    126:        {
                    127:                printf("Lucky devil, that supernova destroyed the last klingon\n");
                    128:                win();
                    129:        }
                    130:        return;
                    131: }

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