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
|
/*
* (C) Gražvydas "notaz" Ignotas, 2011
*
* This work is licensed under the terms of any of these licenses
* (at your option):
* - GNU GPL, version 2 or later.
* - GNU LGPL, version 2.1 or later.
* See the COPYING file in the top-level directory.
*/
#include <string.h>
#include "main.h"
static unsigned char buf[8];
unsigned char PADpoll_guncon(unsigned char value)
{
if (CurByte == 0) {
CurCmd = value;
CurByte++;
return 0x63; // regardless of cmd
}
if (CurCmd != 0x42 || CurByte >= 8)
return 0xff; // verified
return buf[CurByte++];
}
unsigned char PADstartPoll_guncon(int pad)
{
int x, xn = 0, y = 0, in = 0, xres = 256;
CurByte = 0;
buf[2] = buf[3] = 0xff;
pl_update_gun(&xn, &xres, &y, &in);
// while y = const + line counter, what is x?
// for 256 mode, hw dumped offsets x, y: 0x5a, 0x20
//x = 0x5a + (356 * xn >> 10);
x = 0x5a - (xres - 256) / 3 + (((xres - 256) / 3 + 356) * xn >> 10);
y = 0x20 + y;
if (in & GUNIN_TRIGGER)
buf[3] &= ~0x20;
if (in & GUNIN_BTNA)
buf[2] &= ~0x08;
if (in & GUNIN_BTNB)
buf[3] &= ~0x40;
if (in & GUNIN_TRIGGER2) {
buf[3] &= ~0x20;
x = 1;
y = 10;
}
buf[4] = x;
buf[5] = x >> 8;
buf[6] = y;
buf[7] = y >> 8;
return 0xff;
}
void guncon_init(void)
{
memset(buf, 0xff, sizeof(buf));
buf[1] = 0x5a;
}
|
