1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/* i_system.c */
#include "doomdef.h"
#include "doomtype.h"
#include "i_system.h"
#include "i_sound.h"
#include "i_video.h"
#include "d_net.h"
#include "g_game.h"
#include "m_misc.h"
int mb_used = 6; /* 6MB heap */
void I_Init (void)
{
I_InitSound();
I_InitGraphics();
I_MouseEnable(1);
}
byte* I_ZoneBase (int *size)
{
*size = mb_used*1024*1024;
return (byte *) malloc(*size);
}
/* returns time in 1/70th second tics */
int I_GetTime (void)
{
return (int)((nsec()*TICRATE)/1000000000);
}
static ticcmd_t emptycmd;
ticcmd_t* I_BaseTiccmd (void)
{
return &emptycmd;
}
void I_Quit (void)
{
D_QuitNetGame ();
I_ShutdownSound();
I_ShutdownMusic();
M_SaveDefaults ();
I_ShutdownGraphics();
exits(nil);
}
byte* I_AllocLow (int length)
{
byte *mem;
mem = (byte *)malloc (length);
memset (mem,0,length);
return mem;
}
void I_Tactile(int on, int off, int total)
{
USED(on, off, total);
}
//
// I_Error
//
extern boolean demorecording;
void I_Error (char *error, ...)
{
va_list argptr;
// Message first.
va_start (argptr,error);
fprintf (stderr, "Error: ");
vfprintf (stderr,error,argptr);
fprintf (stderr, "\n");
va_end (argptr);
fflush( stderr );
// Shutdown. Here might be other errors.
if (demorecording)
G_CheckDemoStatus();
D_QuitNetGame ();
I_ShutdownGraphics();
exits("I_Error");
}
int I_FileExists (char *filepath)
{
return access(filepath, AEXIST) == 0;
}
int I_Open (char *filepath)
{
return open(filepath, OREAD);
}
void I_Close (int handle)
{
close (handle);
}
int I_Seek (int handle, int n)
{
return seek(handle, n, 0);
}
int I_Read (int handle, void *buf, int n)
{
return read(handle, buf, n);
}
char* I_IdentifyWAD(char *wadname)
{
static char path[1024];
char *home;
snprint(path, sizeof path, wadname);
if (I_FileExists (path))
return path;
if(home = getenv("home")){
snprintf(path, sizeof path, "%s/lib/doom/%s", home, wadname);
free(home);
if (I_FileExists (path))
return path;
}
snprintf(path, sizeof path, "/sys/lib/doom/%s", wadname);
if (I_FileExists (path))
return path;
snprintf(path, sizeof path, "/sys/games/lib/doom/%s", wadname);
if (I_FileExists (path))
return path;
return nil;
}
|
