xref: /openbsd/games/trek/destruct.c (revision d415bd75)
1 /*	$OpenBSD: destruct.c,v 1.9 2016/01/07 14:37:51 mestre Exp $	*/
2 /*	$NetBSD: destruct.c,v 1.3 1995/04/22 10:58:44 cgd Exp $	*/
3 
4 /*
5  * Copyright (c) 1980, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 #include <stdio.h>
34 #include <string.h>
35 #include <unistd.h>
36 
37 #include "getpar.h"
38 #include "trek.h"
39 
40 /*
41 **  Self Destruct Sequence
42 **
43 **	The computer starts up the self destruct sequence.  Obviously,
44 **	if the computer is out nothing can happen.  You get a countdown
45 **	and a request for password.  This must match the password that
46 **	you entered at the start of the game.
47 **
48 **	You get to destroy things when you blow up; hence, it is
49 **	possible to win the game by destructing if you take the last
50 **	Klingon with you.
51 **
52 **	There used to be a \032 in the message (^Z), which is because
53 **	the terminal in Allman's office was an ADM-3, which uses that char-
54 **	acter to clear the screen.  There was also a \014 (form feed)
55 **	because that clears some other screens.  Now there is nothing.
56 **	Presumably the most general screen clear today would be
57 **	ESC [2J
58 */
59 
60 void
61 destruct(int v)
62 {
63 	char	checkpass[15];
64 	int	i, j;
65 	double	zap;
66 
67 	if (damaged(COMPUTER))
68 	{
69 		out(COMPUTER);
70 		return;
71 	}
72 	printf("\n\07 --- WORKING ---\07\n");
73 	sleep(3);
74 	/* output the count 10 9 8 7 6 */
75 	for (i = 10; i > 5; i--)
76 	{
77 		for (j = 10;  j > i; j--)
78 			printf("   ");
79 		printf("%d\n", i);
80 		sleep(1);
81 	}
82 	/* check for password on new line only */
83 	skiptonl(0);
84 	getstrpar("Enter password verification", checkpass, 14, 0);
85 	sleep(2);
86 	if (strcmp(checkpass, Game.passwd) != 0)
87 	{
88 		printf("Self destruct sequence aborted\n");
89 		return;
90 	}
91 	printf("Password verified; self destruct sequence continues:\n");
92 	sleep(2);
93 	/* output count 5 4 3 2 1 0 */
94 	for (i = 5; i >= 0; i--)
95 	{
96 		sleep(1);
97 		for (j = 5; j > i; j--)
98 			printf("   ");
99 		printf("%d\n", i);
100 	}
101 	sleep(2);
102 	/* printf("\032\014***** %s destroyed *****\n", Ship.shipname); */
103 	printf("\n\n\n\n***** %s destroyed *****\n", Ship.shipname);
104 	Game.killed = 1;
105 	/* let's see what we can blow up!!!! */
106 	zap = 20.0 * Ship.energy;
107 	Game.deaths += Ship.crew;
108 	for (i = 0; i < Etc.nkling; )
109 	{
110 		if (Etc.klingon[i].power * Etc.klingon[i].dist <= zap)
111 			killk(Etc.klingon[i].x, Etc.klingon[i].y);
112 		else
113 			i++;
114 	}
115 	/* if we didn't kill the last Klingon (detected by killk), */
116 	/* then we lose.... */
117 	lose(L_DSTRCT);
118 }
119