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/* $OpenBSD: snova.c,v 1.6 2009/10/27 23:59:27 deraadt Exp $ */
/* $NetBSD: snova.c,v 1.3 1995/04/22 10:59:29 cgd Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <unistd.h>
#include "trek.h"
/*
** CAUSE SUPERNOVA TO OCCUR
**
** A supernova occurs. If 'ix' < 0, a random quadrant is chosen;
** otherwise, the current quadrant is taken, and (ix, iy) give
** the sector quadrants of the star which is blowing up.
**
** If the supernova turns out to be in the quadrant you are in,
** you go into "emergency override mode", which tries to get you
** out of the quadrant as fast as possible. However, if you
** don't have enough fuel, or if you by chance run into something,
** or some such thing, you blow up anyway. Oh yeh, if you are
** within two sectors of the star, there is nothing that can
** be done for you.
**
** When a star has gone supernova, the quadrant becomes uninhab-
** itable for the rest of eternity, i.e., the game. If you ever
** try stopping in such a quadrant, you will go into emergency
** override mode.
*/
void
snova(x, y)
int x, y;
{
int qx, qy;
int ix, iy = 0;
int f, n;
int dx, dy;
struct quad *q;
f = 0;
ix = x;
if (ix < 0)
{
/* choose a quadrant */
while (1)
{
qx = ranf(NQUADS);
qy = ranf(NQUADS);
q = &Quad[qx][qy];
if (q->stars > 0)
break;
}
if (Ship.quadx == qx && Ship.quady == qy)
{
/* select a particular star */
n = ranf(q->stars);
for (ix = 0; ix < NSECTS; ix++)
{
for (iy = 0; iy < NSECTS; iy++)
if (Sect[ix][iy] == STAR || Sect[ix][iy] == INHABIT)
if ((n -= 1) <= 0)
break;
if (n <= 0)
break;
}
f = 1;
}
}
else
{
/* current quadrant */
iy = y;
qx = Ship.quadx;
qy = Ship.quady;
q = &Quad[qx][qy];
f = 1;
}
if (f)
{
/* supernova is in same quadrant as Enterprise */
printf("\a\nRED ALERT: supernova occuring at %d,%d\n", ix, iy);
dx = ix - Ship.sectx;
dy = iy - Ship.secty;
if (dx * dx + dy * dy <= 2)
{
printf("*** Emergency override attem");
sleep(1);
printf("\n");
lose(L_SNOVA);
}
q->scanned = 1000;
}
else
{
if (!damaged(SSRADIO))
{
q->scanned = 1000;
printf("\nUhura: Captain, Starfleet Command reports a supernova\n");
printf(" in quadrant %d,%d. Caution is advised\n", qx, qy);
}
}
/* clear out the supernova'ed quadrant */
dx = q->klings;
dy = q->stars;
Now.klings -= dx;
if (x >= 0)
{
/* Enterprise caused supernova */
Game.kills += dy;
if (q->bases)
killb(qx, qy);
Game.killk += dx;
}
else
if (q->bases)
killb(qx, qy);
killd(qx, qy, (x >= 0));
q->stars = -1;
q->klings = 0;
if (Now.klings <= 0)
{
printf("Lucky devil, that supernova destroyed the last klingon\n");
win();
}
}
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