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nova.c revision 1.3 
      1 /*	$NetBSD: nova.c,v 1.3 1995/04/22 10:59:14 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)nova.c	8.1 (Berkeley) 5/31/93";
     39 #else
     40 static char rcsid[] = "$NetBSD: nova.c,v 1.3 1995/04/22 10:59:14 cgd Exp $";
     41 #endif
     42 #endif /* not lint */
     43 
     44 # include	"trek.h"
     45 
     46 /*
     47 **  CAUSE A NOVA TO OCCUR
     48 **
     49 **	A nova occurs.  It is the result of having a star hit with
     50 **	a photon torpedo.  There are several things which may happen.
     51 **	The star may not be affected.  It may go nova.  It may turn
     52 **	into a black hole.  Any (yummy) it may go supernova.
     53 **
     54 **	Stars that go nova cause stars which surround them to undergo
     55 **	the same probabilistic process.  Klingons next to them are
     56 **	destroyed.  And if the starship is next to it, it gets zapped.
     57 **	If the zap is too much, it gets destroyed.
     58 */
     59 
     60 nova(x, y)
     61 int	x, y;
     62 {
     63 	register int		i, j;
     64 	register int		se;
     65 
     66 	if (Sect[x][y] != STAR || Quad[Ship.quadx][Ship.quady].stars < 0)
     67 		return;
     68 	if (ranf(100) < 15)
     69 	{
     70 		printf("Spock: Star at %d,%d failed to nova.\n", x, y);
     71 		return;
     72 	}
     73 	if (ranf(100) < 5)
     74 		return (snova(x, y));
     75 	printf("Spock: Star at %d,%d gone nova\n", x, y);
     76 
     77 	if (ranf(4) != 0)
     78 		Sect[x][y] = EMPTY;
     79 	else
     80 	{
     81 		Sect[x][y] = HOLE;
     82 		Quad[Ship.quadx][Ship.quady].holes += 1;
     83 	}
     84 	Quad[Ship.quadx][Ship.quady].stars -= 1;
     85 	Game.kills += 1;
     86 	for (i = x - 1; i <= x + 1; i++)
     87 	{
     88 		if (i < 0 || i >= NSECTS)
     89 			continue;
     90 		for (j = y - 1; j <= y + 1; j++)
     91 		{
     92 			if (j < 0 || j >= NSECTS)
     93 				continue;
     94 			se = Sect[i][j];
     95 			switch (se)
     96 			{
     97 
     98 			  case EMPTY:
     99 			  case HOLE:
    100 				break;
    101 
    102 			  case KLINGON:
    103 				killk(i, j);
    104 				break;
    105 
    106 			  case STAR:
    107 				nova(i, j);
    108 				break;
    109 
    110 			  case INHABIT:
    111 				kills(i, j, -1);
    112 				break;
    113 
    114 			  case BASE:
    115 				killb(i, j);
    116 				Game.killb += 1;
    117 				break;
    118 
    119 			  case ENTERPRISE:
    120 			  case QUEENE:
    121 				se = 2000;
    122 				if (Ship.shldup)
    123 					if (Ship.shield >= se)
    124 					{
    125 						Ship.shield -= se;
    126 						se = 0;
    127 					}
    128 					else
    129 					{
    130 						se -= Ship.shield;
    131 						Ship.shield = 0;
    132 					}
    133 				Ship.energy -= se;
    134 				if (Ship.energy <= 0)
    135 					lose(L_SUICID);
    136 				break;
    137 
    138 			  default:
    139 				printf("Unknown object %c at %d,%d destroyed\n",
    140 					se, i, j);
    141 				Sect[i][j] = EMPTY;
    142 				break;
    143 			}
    144 		}
    145 	}
    146 	return;
    147 }
    148