This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_sysjoystick.c
2
3
Simple DirectMedia Layer
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
5
6
7
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
9
10
11
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
13
14
15
16
17
18
19
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
20
21
22
23
24
25
26
27
28
29
30
31
32
*/
#include "SDL_config.h"
#ifdef SDL_JOYSTICK_NDS
/* This is the system specific header for the SDL joystick API */
#include <nds.h>
#include <stdio.h> /* For the definition of NULL */
#include "SDL_error.h"
#include "SDL_events.h"
#include "SDL_joystick.h"
33
34
#include "../SDL_sysjoystick.h"
#include "../SDL_joystick_c.h"
35
36
37
38
39
40
41
42
43
44
45
#include "../../video/nds/SDL_ndsevents_c.h"
/* Function to scan the system for joysticks.
* This function should set SDL_numjoysticks to the number of available
* joysticks. Joystick 0 should be the system default joystick.
* It should return 0, or -1 on an unrecoverable fatal error.
*/
int
SDL_SYS_JoystickInit(void)
{
46
SDL_numjoysticks = 1;
47
return (1);
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
}
/* Function to get the device-dependent name of a joystick */
const char *
SDL_SYS_JoystickName(int index)
{
if (!index)
return "NDS builtin joypad";
SDL_SetError("No joystick available with that index");
return (NULL);
}
/* Function to open a joystick for use.
The joystick to open is specified by the index field of the joystick.
This should fill the nbuttons and naxes fields of the joystick structure.
It returns 0, or -1 if there is an error.
*/
int
SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
{
joystick->nbuttons = 8;
joystick->nhats = 0;
joystick->nballs = 0;
joystick->naxes = 2;
return 0;
}
76
77
78
79
80
/* Function to update the state of a joystick - called as a device poll.
* This function shouldn't update the joystick structure directly,
* but instead should call SDL_PrivateJoystick*() to deliver events
* and update joystick device state.
*/
82
83
84
85
SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
{
u32 keysd, keysu;
int magnitude = 16384;
86
87
/*scanKeys(); - this is done in PumpEvents, because touch uses it too */
88
keysd = keysDown();
89
90
91
92
93
94
95
96
97
98
99
100
101
102
keysu = keysUp();
if ((keysd & KEY_UP)) {
SDL_PrivateJoystickAxis(joystick, 1, -magnitude);
}
if ((keysd & KEY_DOWN)) {
SDL_PrivateJoystickAxis(joystick, 1, magnitude);
}
if ((keysd & KEY_LEFT)) {
SDL_PrivateJoystickAxis(joystick, 0, -magnitude);
}
if ((keysd & KEY_RIGHT)) {
SDL_PrivateJoystickAxis(joystick, 0, magnitude);
}
103
if ((keysu & (KEY_UP | KEY_DOWN))) {
104
105
SDL_PrivateJoystickAxis(joystick, 1, 0);
}
106
if ((keysu & (KEY_LEFT | KEY_RIGHT))) {
107
108
SDL_PrivateJoystickAxis(joystick, 0, 0);
}
109
if ((keysd & KEY_A)) {
110
111
SDL_PrivateJoystickButton(joystick, 0, SDL_PRESSED);
}
112
if ((keysd & KEY_B)) {
113
114
SDL_PrivateJoystickButton(joystick, 1, SDL_PRESSED);
}
115
if ((keysd & KEY_X)) {
116
117
SDL_PrivateJoystickButton(joystick, 2, SDL_PRESSED);
}
118
if ((keysd & KEY_Y)) {
119
120
SDL_PrivateJoystickButton(joystick, 3, SDL_PRESSED);
}
121
if ((keysd & KEY_L)) {
122
123
SDL_PrivateJoystickButton(joystick, 4, SDL_PRESSED);
}
124
if ((keysd & KEY_R)) {
125
126
SDL_PrivateJoystickButton(joystick, 5, SDL_PRESSED);
}
127
if ((keysd & KEY_SELECT)) {
128
129
SDL_PrivateJoystickButton(joystick, 6, SDL_PRESSED);
}
130
if ((keysd & KEY_START)) {
131
132
SDL_PrivateJoystickButton(joystick, 7, SDL_PRESSED);
}
133
if ((keysu & KEY_A)) {
134
135
SDL_PrivateJoystickButton(joystick, 0, SDL_RELEASED);
}
136
if ((keysu & KEY_B)) {
137
138
SDL_PrivateJoystickButton(joystick, 1, SDL_RELEASED);
}
139
if ((keysu & KEY_X)) {
140
141
SDL_PrivateJoystickButton(joystick, 2, SDL_RELEASED);
}
142
if ((keysu & KEY_Y)) {
143
144
SDL_PrivateJoystickButton(joystick, 3, SDL_RELEASED);
}
145
if ((keysu & KEY_L)) {
146
147
SDL_PrivateJoystickButton(joystick, 4, SDL_RELEASED);
}
148
if ((keysu & KEY_R)) {
149
150
SDL_PrivateJoystickButton(joystick, 5, SDL_RELEASED);
}
151
if ((keysu & KEY_SELECT)) {
152
153
SDL_PrivateJoystickButton(joystick, 6, SDL_RELEASED);
}
154
if ((keysu & KEY_START)) {
155
156
SDL_PrivateJoystickButton(joystick, 7, SDL_RELEASED);
}
158
159
160
161
162
163
164
165
166
167
168
169
170
171
/* Function to close a joystick after use */
void
SDL_SYS_JoystickClose(SDL_Joystick * joystick)
{
}
/* Function to perform any system-specific joystick related cleanup */
void
SDL_SYS_JoystickQuit(void)
{
}
#endif /* SDL_JOYSTICK_NDS */