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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
use libc::{c_int, c_char};
use std::ffi::{CString, CStr};
use SdlResult;
use {get_error, clear_error};
use joystick;
use util::CStringExt;
use sys::controller as ll;
use sys::event::{SDL_QUERY, SDL_ENABLE};
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
#[repr(i32)]
pub enum Axis {
Invalid = ll::SDL_CONTROLLER_AXIS_INVALID,
LeftX = ll::SDL_CONTROLLER_AXIS_LEFTX,
LeftY = ll::SDL_CONTROLLER_AXIS_LEFTY,
RightX = ll::SDL_CONTROLLER_AXIS_RIGHTX,
RightY = ll::SDL_CONTROLLER_AXIS_RIGHTY,
TriggerLeft = ll::SDL_CONTROLLER_AXIS_TRIGGERLEFT,
TriggerRight = ll::SDL_CONTROLLER_AXIS_TRIGGERRIGHT,
}
impl Axis {
pub fn from_string(axis: &str) -> Axis {
let id = match CString::new(axis) {
Ok(axis) => unsafe { ll::SDL_GameControllerGetAxisFromString(axis.as_ptr()) },
Err(_) => ll::SDL_CONTROLLER_AXIS_INVALID
};
wrap_controller_axis(id as u8)
}
pub fn get_string(self) -> String {
let axis = self as ll::SDL_GameControllerAxis;
let string = unsafe { ll::SDL_GameControllerGetStringForAxis(axis) };
c_str_to_string(string)
}
}
pub fn wrap_controller_axis(bitflags: u8) -> Axis {
match bitflags as c_int {
ll::SDL_CONTROLLER_AXIS_LEFTX => Axis::LeftX,
ll::SDL_CONTROLLER_AXIS_LEFTY => Axis::LeftY,
ll::SDL_CONTROLLER_AXIS_RIGHTX => Axis::RightX,
ll::SDL_CONTROLLER_AXIS_RIGHTY => Axis::RightY,
ll::SDL_CONTROLLER_AXIS_TRIGGERLEFT => Axis::TriggerLeft,
ll::SDL_CONTROLLER_AXIS_TRIGGERRIGHT => Axis::TriggerRight,
_ => panic!("unhandled controller axis")
}
}
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
#[repr(i32)]
pub enum Button {
Invalid = ll::SDL_CONTROLLER_BUTTON_INVALID,
A = ll::SDL_CONTROLLER_BUTTON_A,
B = ll::SDL_CONTROLLER_BUTTON_B,
X = ll::SDL_CONTROLLER_BUTTON_X,
Y = ll::SDL_CONTROLLER_BUTTON_Y,
Back = ll::SDL_CONTROLLER_BUTTON_BACK,
Guide = ll::SDL_CONTROLLER_BUTTON_GUIDE,
Start = ll::SDL_CONTROLLER_BUTTON_START,
LeftStick = ll::SDL_CONTROLLER_BUTTON_LEFTSTICK,
RightStick = ll::SDL_CONTROLLER_BUTTON_RIGHTSTICK,
LeftShoulder = ll::SDL_CONTROLLER_BUTTON_LEFTSHOULDER,
RightShoulder = ll::SDL_CONTROLLER_BUTTON_RIGHTSHOULDER,
DPadUp = ll::SDL_CONTROLLER_BUTTON_DPAD_UP,
DPadDown = ll::SDL_CONTROLLER_BUTTON_DPAD_DOWN,
DPadLeft = ll::SDL_CONTROLLER_BUTTON_DPAD_LEFT,
DPadRight = ll::SDL_CONTROLLER_BUTTON_DPAD_RIGHT,
}
impl Button {
pub fn from_string(button: &str) -> Button {
let id = match CString::new(button) {
Ok(button) => unsafe { ll::SDL_GameControllerGetButtonFromString(button.as_ptr()) },
Err(_) => ll::SDL_CONTROLLER_BUTTON_INVALID
};
wrap_controller_button(id as u8)
}
pub fn get_string(self) -> String {
let button = self as ll::SDL_GameControllerButton;
let string = unsafe { ll::SDL_GameControllerGetStringForButton(button) };
c_str_to_string(string)
}
}
pub fn wrap_controller_button(bitflags: u8) -> Button {
match bitflags as c_int {
ll::SDL_CONTROLLER_BUTTON_A => Button::A,
ll::SDL_CONTROLLER_BUTTON_B => Button::B,
ll::SDL_CONTROLLER_BUTTON_X => Button::X,
ll::SDL_CONTROLLER_BUTTON_Y => Button::Y,
ll::SDL_CONTROLLER_BUTTON_BACK => Button::Back,
ll::SDL_CONTROLLER_BUTTON_GUIDE => Button::Guide,
ll::SDL_CONTROLLER_BUTTON_START => Button::Start,
ll::SDL_CONTROLLER_BUTTON_LEFTSTICK => Button::LeftStick,
ll::SDL_CONTROLLER_BUTTON_RIGHTSTICK => Button::RightStick,
ll::SDL_CONTROLLER_BUTTON_LEFTSHOULDER => Button::LeftShoulder,
ll::SDL_CONTROLLER_BUTTON_RIGHTSHOULDER => Button::RightShoulder,
ll::SDL_CONTROLLER_BUTTON_DPAD_UP => Button::DPadUp,
ll::SDL_CONTROLLER_BUTTON_DPAD_DOWN => Button::DPadDown,
ll::SDL_CONTROLLER_BUTTON_DPAD_LEFT => Button::DPadLeft,
ll::SDL_CONTROLLER_BUTTON_DPAD_RIGHT => Button::DPadRight,
_ => panic!("unhandled controller button")
}
}
pub fn is_game_controller(id: i32) -> bool {
unsafe { ll::SDL_IsGameController(id) != 0 }
}
pub fn name_for_index(id: i32) -> SdlResult<String> {
let name = unsafe { ll::SDL_GameControllerNameForIndex(id) };
c_str_to_string_or_err(name)
}
pub fn update() {
unsafe { ll::SDL_GameControllerUpdate() };
}
pub fn set_event_state(state: bool) {
unsafe { ll::SDL_GameControllerEventState(state as i32) };
}
pub fn get_event_state() -> bool {
unsafe { ll::SDL_GameControllerEventState(SDL_QUERY as i32)
== SDL_ENABLE as i32 }
}
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
pub enum MappingStatus {
Added = 1,
Updated = 0,
}
pub fn add_mapping(mapping: &str) -> SdlResult<MappingStatus> {
let mapping = try!(CString::new(mapping).unwrap_or_sdlresult());
let result = unsafe { ll::SDL_GameControllerAddMapping(mapping.as_ptr()) };
match result {
1 => Ok(MappingStatus::Added),
0 => Ok(MappingStatus::Updated),
_ => Err(get_error()),
}
}
pub fn mapping_for_guid(guid: joystick::Guid) -> SdlResult<String> {
let c_str = unsafe { ll::SDL_GameControllerMappingForGUID(guid.raw()) };
c_str_to_string_or_err(c_str)
}
pub struct GameController {
raw: *mut ll::SDL_GameController,
}
impl GameController {
pub fn open(id: i32) -> SdlResult<GameController> {
let controller = unsafe { ll::SDL_GameControllerOpen(id) };
if controller.is_null() {
Err(get_error())
} else {
Ok(GameController { raw: controller })
}
}
pub fn name(&self) -> String {
let name = unsafe { ll::SDL_GameControllerName(self.raw) };
c_str_to_string(name)
}
pub fn mapping(&self) -> String {
let mapping = unsafe { ll::SDL_GameControllerMapping(self.raw) };
c_str_to_string(mapping)
}
pub fn get_attached(&self) -> bool {
unsafe { ll::SDL_GameControllerGetAttached(self.raw) != 0 }
}
pub fn get_axis(&self, axis: Axis) -> SdlResult<i16> {
clear_error();
let axis = axis as ll::SDL_GameControllerAxis;
let pos = unsafe { ll::SDL_GameControllerGetAxis(self.raw, axis) };
if pos != 0 {
Ok(pos)
} else {
let err = get_error();
if err.is_empty() {
Ok(pos)
} else {
Err(err)
}
}
}
pub fn get_button(&self, button: Button) -> SdlResult<bool> {
clear_error();
let button = button as ll::SDL_GameControllerButton;
let pressed =
unsafe { ll::SDL_GameControllerGetButton(self.raw, button) };
match pressed {
1 => Ok(true),
0 => {
let err = get_error();
if err.is_empty() {
Ok(false)
} else {
Err(err)
}
}
_ => Err(get_error()),
}
}
}
impl Drop for GameController {
fn drop(&mut self) {
unsafe { ll::SDL_GameControllerClose(self.raw) }
}
}
fn c_str_to_string(c_str: *const c_char) -> String {
if c_str.is_null() {
String::new()
} else {
let bytes = unsafe { CStr::from_ptr(c_str).to_bytes() };
String::from_utf8_lossy(bytes).to_string()
}
}
fn c_str_to_string_or_err(c_str: *const c_char) -> SdlResult<String> {
if c_str.is_null() {
Err(get_error())
} else {
let bytes = unsafe { CStr::from_ptr(c_str).to_bytes() };
Ok(String::from_utf8_lossy(bytes).to_string())
}
}