xref: /original-bsd/games/trek/main.c (revision ce06cd54)
1 /*
2  * Copyright (c) 1980 Regents of the University of California.
3  * All rights reserved.
4  *
5  * %sccs.include.redist.c%
6  */
7 
8 #ifndef lint
9 char copyright[] =
10 "@(#) Copyright (c) 1980 Regents of the University of California.\n\
11  All rights reserved.\n";
12 #endif /* not lint */
13 
14 #ifndef lint
15 static char sccsid[] = "@(#)main.c	5.7 (Berkeley) 02/28/91";
16 #endif /* not lint */
17 
18 # include	"trek.h"
19 # include	<stdio.h>
20 # include	<sgtty.h>
21 # include	<setjmp.h>
22 
23 # define	PRIO		00	/* default priority */
24 
25 int	Mother	= 51 + (51 << 8);
26 
27 /*
28 **	 ####  #####    #    ####          #####  ####   #####  #   #
29 **	#        #     # #   #   #           #    #   #  #      #  #
30 **	 ###     #    #####  ####            #    ####   ###    ###
31 **	    #    #    #   #  #  #            #    #  #   #      #  #
32 **	####     #    #   #  #   #           #    #   #  #####  #   #
33 **
34 **	C version by Eric P. Allman 5/76 (U.C. Berkeley) with help
35 **		from Jeff Poskanzer and Pete Rubinstein.
36 **
37 **	I also want to thank everyone here at Berkeley who
38 **	where crazy enough to play the undebugged game.  I want to
39 **	particularly thank Nick Whyte, who made considerable
40 **	suggestions regarding the content of the game.  Why, I'll
41 **	never forget the time he suggested the name for the
42 **	"capture" command.
43 **
44 **	Please send comments, questions, and suggestions about this
45 **		game to:
46 **			Eric P. Allman
47 **			Project INGRES
48 **			Electronics Research Laboratory
49 **			Cory Hall
50 **			University of California
51 **			Berkeley, California  94720
52 **
53 **	If you make ANY changes in the game, I sure would like to
54 **	know about them.  It is sort of an ongoing project for me,
55 **	and I very much want to put in any bug fixes and improvements
56 **	that you might come up with.
57 **
58 **	FORTRASH version by Kay R. Fisher (DEC) "and countless others".
59 **	That was adapted from the "original BASIC program" (ha!) by
60 **		Mike Mayfield (Centerline Engineering).
61 **
62 **	Additional inspiration taken from FORTRAN version by
63 **		David Matuszek and Paul Reynolds which runs on the CDC
64 **		7600 at Lawrence Berkeley Lab, maintained there by
65 **		Andy Davidson.  This version is also available at LLL
66 **		and at LMSC.  In all fairness, this version was the
67 **		major inspiration for this version of the game (trans-
68 **		lation:  I ripped off a whole lot of code).
69 **
70 **	Minor other input from the "Battelle Version 7A" by Joe Miller
71 **		(Graphics Systems Group, Battelle-Columbus Labs) and
72 **		Ross Pavlac (Systems Programmer, Battelle Memorial
73 **		Institute).  That version was written in December '74
74 **		and extensively modified June '75.  It was adapted
75 **		from the FTN version by Ron Williams of CDC Sunnyvale,
76 **		which was adapted from the Basic version distributed
77 **		by DEC.  It also had "neat stuff swiped" from T. T.
78 **		Terry and Jim Korp (University of Texas), Hicks (Penn
79 **		U.), and Rick Maus (Georgia Tech).  Unfortunately, it
80 **		was not as readable as it could have been and so the
81 **		translation effort was severely hampered.  None the
82 **		less, I got the idea of inhabited starsystems from this
83 **		version.
84 **
85 **	Permission is given for use, copying, and modification of
86 **		all or part of this program and related documentation,
87 **		provided that all reference to the authors are maintained.
88 **
89 **
90 **********************************************************************
91 **
92 **  NOTES TO THE MAINTAINER:
93 **
94 **	There is a compilation option xTRACE which must be set for any
95 **	trace information to be generated.  It is probably defined in
96 **	the version that you get.  It can be removed, however, if you
97 **	have trouble finding room in core.
98 **
99 **	Many things in trek are not as clear as they might be, but are
100 **	done to reduce space.  I compile with the -f and -O flags.  I
101 **	am constrained to running with non-seperated I/D space, since
102 **	we don't have doubleing point hardware here; even if we did, I
103 **	would like trek to be available to the large number of people
104 **	who either have an 11/40 or do not have FP hardware.  I also
105 **	found it desirable to make the code run reentrant, so this
106 **	added even more space constraints.
107 **
108 **	I use the portable C library to do my I/O.  This is done be-
109 **	cause I wanted the game easily transportable to other C
110 **	implementations, and because I was too lazy to do the doubleing
111 **	point input myself.  Little did I know.  The portable C library
112 **	released by Bell Labs has more bugs than you would believe, so
113 **	I ended up rewriting the whole blessed thing.  Trek excercises
114 **	many of the bugs in it, as well as bugs in some of the section
115 **	III UNIX routines.  We have fixed them here.  One main problem
116 **	was a bug in alloc() that caused it to always ask for a large
117 **	hunk of memory, which worked fine unless you were almost out,
118 **	which I inevitably was.  If you want the code for all of this
119 **	stuff, it is also available through me.
120 **
121 ***********************************************************************
122 */
123 
124 jmp_buf env;
125 
126 main(argc, argv)
127 int	argc;
128 char	**argv;
129 {
130 	long			vect;
131 	/* extern FILE		*f_log; */
132 	register char		opencode;
133 	int			prio;
134 	register int		ac;
135 	register char		**av;
136 	struct	sgttyb		argp;
137 
138 	av = argv;
139 	ac = argc;
140 	av++;
141 	time(&vect);
142 	srand(vect);
143 	opencode = 'w';
144 	prio = PRIO;
145 	if (gtty(1, &argp) == 0)
146 	{
147 		if ((argp.sg_ispeed ) < B1200)
148 			Etc.fast++;
149 	}
150 	while (ac > 1 && av[0][0] == '-')
151 	{
152 		switch (av[0][1])
153 		{
154 		  case 'a':	/* append to log file */
155 			opencode = 'a';
156 			break;
157 
158 		  case 'f':	/* set fast mode */
159 			Etc.fast++;
160 			break;
161 
162 		  case 's':	/* set slow mode */
163 			Etc.fast = 0;
164 			break;
165 
166 #		ifdef xTRACE
167 		  case 't':	/* trace */
168 			if (getuid() != Mother)
169 				goto badflag;
170 			Trace++;
171 			break;
172 #		endif
173 
174 		  case 'p':	/* set priority */
175 			if (getuid() != Mother)
176 				goto badflag;
177 			prio = atoi(av[0] + 2);
178 			break;
179 
180 		  default:
181 		  badflag:
182 			printf("Invalid option: %s\n", av[0]);
183 
184 		}
185 		ac--;
186 		av++;
187 	}
188 	if (ac > 2)
189 		syserr(0, "arg count");
190 		/*
191 	if (ac > 1)
192 		f_log = fopen(av[0], opencode);
193 		*/
194 
195 	printf("\n   * * *   S T A R   T R E K   * * *\n\nPress return to continue.\n");
196 
197 	if (setjmp(env))
198 	{
199 		if ( !getynpar("Another game") )
200 			exit(0);
201 	}
202 	do
203 	{
204 		setup();
205 		play();
206 	} while (getynpar("Another game"));
207 
208 	fflush(stdout);
209 }
210