annotate src/util.c @ 18:1424868939a8

Indenting
author darius
date Wed, 24 Dec 1997 12:38:35 +0000
parents 0836fb919dfa
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
1 /*--------------------------------------------------------------------------
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
2 NETREK II -- Paradise
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
3
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
4 Permission to use, copy, modify, and distribute this software and its
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
5 documentation, or any derivative works thereof, for any NON-COMMERCIAL
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
6 purpose and without fee is hereby granted, provided that this copyright
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
7 notice appear in all copies. No representations are made about the
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
8 suitability of this software for any purpose. This software is provided
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
9 "as is" without express or implied warranty.
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
10
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
11 Xtrek Copyright 1986 Chris Guthrie
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
12 Netrek (Xtrek II) Copyright 1989 Kevin P. Smith
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
13 Scott Silvey
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
14 Paradise II (Netrek II) Copyright 1993 Larry Denys
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
15 Kurt Olsen
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
16 Brandon Gillespie
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
17 --------------------------------------------------------------------------*/
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
18
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
19
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
20 #include "config.h"
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
21
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
22 #include <stdio.h>
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
23 #include <math.h>
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
24 #include <signal.h>
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
25 #include <sys/time.h>
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
26 #include "defs.h"
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
27 #include "struct.h"
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
28 #include "data.h"
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
29 #include "shmem.h"
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
30
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
31 struct player *me;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
32 struct ship *myship;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
33 struct stats *mystats;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
34
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
35
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
36
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
37 /*----------------------------VISIBLE FUNCTIONS---------------------------*/
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
38
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
39 /*-------------------------------ANGDIST----------------------------------*/
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
40 /*
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
41 * This function provides the proper angular distance between two angles. The
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
42 * angles are expressed as numbers from 0-255.
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
43 */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
44
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
45 int
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
46 angdist(x, y)
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
47 unsigned char x, y;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
48 {
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
49 register unsigned char res; /* temp var */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
50
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
51 res = x - y; /* get abs value of difference */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
52 if (res > 128) /* if more than 180 degrees */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
53 return (256 - (int) res); /* then choose to go other way around */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
54 return ((int) res); /* else its just the difference */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
55 }
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
56
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
57 /*-------------------------------------------------------------------------*/
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
58
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
59
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
60 /*
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
61 * this function checks to see if an occurrence is temporally spaced from the
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
62 * previous one. This is useful in preventing the client from firing torps
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
63 * and missiles too quickly and to limit detting to a reasonable frequency
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
64 * (detting too fast burns fuel and increases wtemp without any benefit).
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
65 */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
66
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
67 int
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
68 temporally_spaced(lasttime, gap)
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
69 struct timeval *lasttime;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
70 int gap; /* microseconds */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
71 {
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
72 struct timeval curtp;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
73
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
74 gettimeofday(&curtp, (struct timezone *) 0);
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
75 if ((curtp.tv_sec == lasttime->tv_sec &&
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
76 curtp.tv_usec < lasttime->tv_usec + gap)
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
77 || (curtp.tv_sec == lasttime->tv_sec + 1 &&
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
78 curtp.tv_usec + 1000000 < lasttime->tv_usec + gap))
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
79 return 0;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
80
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
81 lasttime->tv_sec = curtp.tv_sec;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
82 lasttime->tv_usec = curtp.tv_usec;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
83 return 1;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
84 }
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
85
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
86 /*
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
87 */
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
88
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
89 int
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
90 check_fire_warp()
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
91 {
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
92 if (configvals->fireduringwarp || !(me->p_flags & PFWARP))
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
93 return 1;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
94
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
95 warning("Can not fire while in warp.");
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
96
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
97 return 0;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
98 }
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
99
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
100 int
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
101 check_fire_warpprep()
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
102 {
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
103 if (configvals->fireduringwarpprep || !me->p_warptime)
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
104 return 1;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
105
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
106 warning("Can not fire while preparing for warp.");
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
107
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
108 return 0;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
109 }
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
110
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
111 int
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
112 check_fire_docked()
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
113 {
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
114 if (configvals->firewhiledocked || !(me->p_flags & PFDOCK))
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
115 return 1;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
116
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
117 warning("It is unsafe to use weapons while docked.");
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
118
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
119 return 0;
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
120 }
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
121
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
122
0836fb919dfa First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
123 /*-------END OF FILE--------*/