xref: /netbsd/games/trek/autover.c (revision 6550d01e)
1 /*	$NetBSD: autover.c,v 1.7 2009/05/24 22:55:03 dholland 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. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)autover.c	8.1 (Berkeley) 5/31/93";
36 #else
37 __RCSID("$NetBSD: autover.c,v 1.7 2009/05/24 22:55:03 dholland Exp $");
38 #endif
39 #endif /* not lint */
40 
41 #include <stdio.h>
42 #include "trek.h"
43 
44 /*
45 **  Automatic Override
46 **
47 **	If we should be so unlucky as to be caught in a quadrant
48 **	with a supernova in it, this routine is called.  It is
49 **	called from checkcond().
50 **
51 **	It sets you to a random warp (guaranteed to be over 6.0)
52 **	and starts sending you off "somewhere" (whereever that is).
53 **
54 **	Please note that it is VERY important that you reset your
55 **	warp speed after the automatic override is called.  The new
56 **	warp factor does not stay in effect for just this routine.
57 **
58 **	This routine will never try to send you more than sqrt(2)
59 **	quadrants, since that is all that is needed.
60 */
61 
62 void
63 autover(void)
64 {
65 	double			dist;
66 	int		course;
67 
68 	printf("\07RED ALERT:  The %s is in a supernova quadrant\n",
69 		Ship.shipname);
70 	printf("***  Emergency override attempts to hurl %s to safety\n",
71 		Ship.shipname);
72 	/* let's get our ass out of here */
73 	Ship.warp = 6.0 + 2.0 * franf();
74 	Ship.warp2 = Ship.warp * Ship.warp;
75 	Ship.warp3 = Ship.warp2 * Ship.warp;
76 	dist = 0.75 * Ship.energy / (Ship.warp3 * (Ship.shldup + 1));
77 	if (dist > 1.4142)
78 		dist = 1.4142;
79 	course = ranf(360);
80 	Etc.nkling = -1;
81 	Ship.cond = RED;
82 	warp(-1, course, dist);
83 	attack(0);
84 }
85