src/platform/sdl/sdl-events.c (view raw)
1/* Copyright (c) 2013-2014 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include "sdl-events.h"
7
8#include <mgba/core/core.h>
9#include <mgba/core/input.h>
10#include <mgba/core/serialize.h>
11#include <mgba/core/thread.h>
12#include <mgba/internal/debugger/debugger.h>
13#include <mgba/internal/gba/input.h>
14#include <mgba-util/configuration.h>
15#include <mgba-util/formatting.h>
16#include <mgba-util/vfs.h>
17
18#if SDL_VERSION_ATLEAST(2, 0, 0) && defined(__APPLE__)
19#define GUI_MOD KMOD_GUI
20#else
21#define GUI_MOD KMOD_CTRL
22#endif
23
24#define GYRO_STEPS 100
25#define RUMBLE_PWM 16
26#define RUMBLE_STEPS 2
27
28mLOG_DEFINE_CATEGORY(SDL_EVENTS, "SDL Events");
29
30DEFINE_VECTOR(SDL_JoystickList, struct SDL_JoystickCombo);
31
32#if SDL_VERSION_ATLEAST(2, 0, 0)
33static void _mSDLSetRumble(struct mRumble* rumble, int enable);
34#endif
35static int32_t _mSDLReadTiltX(struct mRotationSource* rumble);
36static int32_t _mSDLReadTiltY(struct mRotationSource* rumble);
37static int32_t _mSDLReadGyroZ(struct mRotationSource* rumble);
38static void _mSDLRotationSample(struct mRotationSource* source);
39
40bool mSDLInitEvents(struct mSDLEvents* context) {
41#if SDL_VERSION_ATLEAST(2, 0, 4)
42 SDL_SetHint(SDL_HINT_NO_SIGNAL_HANDLERS, "1");
43#endif
44 if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) {
45 mLOG(SDL_EVENTS, ERROR, "SDL joystick initialization failed: %s", SDL_GetError());
46 }
47
48#if SDL_VERSION_ATLEAST(2, 0, 0)
49 SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
50 if (SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0) {
51 mLOG(SDL_EVENTS, ERROR, "SDL haptic initialization failed: %s", SDL_GetError());
52 }
53 if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
54 mLOG(SDL_EVENTS, ERROR, "SDL video initialization failed: %s", SDL_GetError());
55 }
56#endif
57
58 SDL_JoystickEventState(SDL_ENABLE);
59 int nJoysticks = SDL_NumJoysticks();
60 SDL_JoystickListInit(&context->joysticks, nJoysticks);
61 if (nJoysticks > 0) {
62 mSDLUpdateJoysticks(context);
63 // Some OSes don't do hotplug detection
64 if (!SDL_JoystickListSize(&context->joysticks)) {
65 int i;
66 for (i = 0; i < nJoysticks; ++i) {
67 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&context->joysticks);
68 joystick->joystick = SDL_JoystickOpen(i);
69 joystick->index = SDL_JoystickListSize(&context->joysticks) - 1;
70#if SDL_VERSION_ATLEAST(2, 0, 0)
71 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
72 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
73#else
74 joystick->id = SDL_JoystickIndex(joystick->joystick);
75#endif
76 }
77 }
78 }
79
80 context->playersAttached = 0;
81
82 size_t i;
83 for (i = 0; i < MAX_PLAYERS; ++i) {
84 context->preferredJoysticks[i] = 0;
85 }
86
87#if !SDL_VERSION_ATLEAST(2, 0, 0)
88 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
89#else
90 context->screensaverSuspendDepth = 0;
91#endif
92 return true;
93}
94
95void mSDLDeinitEvents(struct mSDLEvents* context) {
96 size_t i;
97 for (i = 0; i < SDL_JoystickListSize(&context->joysticks); ++i) {
98 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&context->joysticks, i);
99#if SDL_VERSION_ATLEAST(2, 0, 0)
100 SDL_HapticClose(joystick->haptic);
101#endif
102 SDL_JoystickClose(joystick->joystick);
103 }
104 SDL_JoystickListDeinit(&context->joysticks);
105 SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
106}
107
108void mSDLEventsLoadConfig(struct mSDLEvents* context, const struct Configuration* config) {
109 context->preferredJoysticks[0] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 0);
110 context->preferredJoysticks[1] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 1);
111 context->preferredJoysticks[2] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 2);
112 context->preferredJoysticks[3] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 3);
113}
114
115void mSDLInitBindingsGBA(struct mInputMap* inputMap) {
116#ifdef BUILD_PANDORA
117 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_PAGEDOWN, GBA_KEY_A);
118 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_END, GBA_KEY_B);
119 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RSHIFT, GBA_KEY_L);
120 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RCTRL, GBA_KEY_R);
121 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LALT, GBA_KEY_START);
122 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LCTRL, GBA_KEY_SELECT);
123 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
124 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
125 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
126 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
127#else
128 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
129 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
130 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
131 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
132 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
133 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
134 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
135 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
136 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
137 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
138#endif
139
140 struct mInputAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
141 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
142 description = (struct mInputAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
143 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
144}
145
146bool mSDLAttachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
147 player->joystick = 0;
148
149 if (events->playersAttached >= MAX_PLAYERS) {
150 return false;
151 }
152
153#if SDL_VERSION_ATLEAST(2, 0, 0)
154 player->rumble.d.setRumble = _mSDLSetRumble;
155 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
156 player->rumble.level = 0;
157 player->rumble.activeLevel = 0;
158 player->rumble.p = player;
159#endif
160
161 player->rotation.d.readTiltX = _mSDLReadTiltX;
162 player->rotation.d.readTiltY = _mSDLReadTiltY;
163 player->rotation.d.readGyroZ = _mSDLReadGyroZ;
164 player->rotation.d.sample = _mSDLRotationSample;
165 player->rotation.axisX = 2;
166 player->rotation.axisY = 3;
167 player->rotation.gyroSensitivity = 2.2e9f;
168 player->rotation.gyroX = 0;
169 player->rotation.gyroY = 1;
170 player->rotation.zDelta = 0;
171 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
172 player->rotation.p = player;
173
174 player->playerId = events->playersAttached;
175 events->players[player->playerId] = player;
176 size_t firstUnclaimed = SIZE_MAX;
177 size_t index = SIZE_MAX;
178
179 size_t i;
180 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
181 bool claimed = false;
182
183 int p;
184 for (p = 0; p < events->playersAttached; ++p) {
185 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
186 claimed = true;
187 break;
188 }
189 }
190 if (claimed) {
191 continue;
192 }
193
194 if (firstUnclaimed == SIZE_MAX) {
195 firstUnclaimed = i;
196 }
197
198 const char* joystickName;
199#if SDL_VERSION_ATLEAST(2, 0, 0)
200 joystickName = SDL_JoystickName(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick);
201#else
202 joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
203#endif
204 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
205 index = i;
206 break;
207 }
208 }
209
210 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
211 index = firstUnclaimed;
212 }
213
214 if (index != SIZE_MAX) {
215 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
216
217#if SDL_VERSION_ATLEAST(2, 0, 0)
218 if (player->joystick->haptic) {
219 SDL_HapticRumbleInit(player->joystick->haptic);
220 }
221#endif
222 }
223
224 ++events->playersAttached;
225 return true;
226}
227
228void mSDLDetachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
229 if (player != events->players[player->playerId]) {
230 return;
231 }
232 int i;
233 for (i = player->playerId; i < events->playersAttached; ++i) {
234 if (i + 1 < MAX_PLAYERS) {
235 events->players[i] = events->players[i + 1];
236 }
237 if (i < events->playersAttached - 1) {
238 events->players[i]->playerId = i;
239 }
240 }
241 --events->playersAttached;
242 CircleBufferDeinit(&player->rotation.zHistory);
243}
244
245void mSDLPlayerLoadConfig(struct mSDLPlayer* context, const struct Configuration* config) {
246 mInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
247 if (context->joystick) {
248 mInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
249#if SDL_VERSION_ATLEAST(2, 0, 0)
250 const char* name = SDL_JoystickName(context->joystick->joystick);
251#else
252 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
253#endif
254 mInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
255
256 const char* value;
257 char* end;
258 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
259 int axis;
260 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", name);
261 if (value) {
262 axis = strtol(value, &end, 0);
263 if (axis >= 0 && axis < numAxes && end && !*end) {
264 context->rotation.axisX = axis;
265 }
266 }
267 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", name);
268 if (value) {
269 axis = strtol(value, &end, 0);
270 if (axis >= 0 && axis < numAxes && end && !*end) {
271 context->rotation.axisY = axis;
272 }
273 }
274 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", name);
275 if (value) {
276 axis = strtol(value, &end, 0);
277 if (axis >= 0 && axis < numAxes && end && !*end) {
278 context->rotation.gyroX = axis;
279 }
280 }
281 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", name);
282 if (value) {
283 axis = strtol(value, &end, 0);
284 if (axis >= 0 && axis < numAxes && end && !*end) {
285 context->rotation.gyroY = axis;
286 }
287 }
288 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", name);
289 if (value) {
290 float sensitivity = strtof_u(value, &end);
291 if (end && !*end) {
292 context->rotation.gyroSensitivity = sensitivity;
293 }
294 }
295 }
296}
297
298void mSDLPlayerSaveConfig(const struct mSDLPlayer* context, struct Configuration* config) {
299 if (context->joystick) {
300#if SDL_VERSION_ATLEAST(2, 0, 0)
301 const char* name = SDL_JoystickName(context->joystick->joystick);
302#else
303 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
304#endif
305 char value[12];
306 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
307 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", value, name);
308 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
309 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", value, name);
310 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
311 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", value, name);
312 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
313 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", value, name);
314 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
315 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
316 }
317}
318
319void mSDLPlayerChangeJoystick(struct mSDLEvents* events, struct mSDLPlayer* player, size_t index) {
320 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
321 return;
322 }
323 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
324}
325
326void mSDLUpdateJoysticks(struct mSDLEvents* events) {
327 // Pump SDL joystick events without eating the rest of the events
328 SDL_JoystickUpdate();
329#if SDL_VERSION_ATLEAST(2, 0, 0)
330 SDL_Event event;
331 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
332 if (event.type == SDL_JOYDEVICEADDED) {
333 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
334 joystick->joystick = SDL_JoystickOpen(event.jdevice.which);
335 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
336 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
337#if SDL_VERSION_ATLEAST(2, 0, 0)
338 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
339#endif
340 } else if (event.type == SDL_JOYDEVICEREMOVED) {
341 SDL_JoystickID ids[MAX_PLAYERS];
342 size_t i;
343 for (i = 0; (int) i < events->playersAttached; ++i) {
344 if (events->players[i]->joystick) {
345 ids[i] = events->players[i]->joystick->id;
346 events->players[i]->joystick = 0;
347 } else {
348 ids[i] = -1;
349 }
350 }
351 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
352 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
353 if (joystick->id == event.jdevice.which) {
354 SDL_JoystickListShift(&events->joysticks, i, 1);
355 continue;
356 }
357 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
358 int p;
359 for (p = 0; p < events->playersAttached; ++p) {
360 if (joystick->id == ids[p]) {
361 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
362 }
363 }
364 ++i;
365 }
366 }
367 }
368#endif
369}
370
371static void _pauseAfterFrame(struct mCoreThread* context) {
372 context->frameCallback = 0;
373 mCoreThreadPauseFromThread(context);
374}
375
376static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
377 int key = -1;
378 if (!event->keysym.mod) {
379 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
380 }
381 if (key != -1) {
382 if (event->type == SDL_KEYDOWN) {
383 context->core->addKeys(context->core, 1 << key);
384 } else {
385 context->core->clearKeys(context->core, 1 << key);
386 }
387 return;
388 }
389 if (event->keysym.sym == SDLK_TAB) {
390 context->sync.audioWait = event->type != SDL_KEYDOWN;
391 return;
392 }
393 if (event->keysym.sym == SDLK_BACKQUOTE) {
394 mCoreThreadSetRewinding(context, event->type == SDL_KEYDOWN);
395 }
396 if (event->type == SDL_KEYDOWN) {
397 switch (event->keysym.sym) {
398#ifdef USE_DEBUGGERS
399 case SDLK_F11:
400 if (context->core->debugger) {
401 mDebuggerEnter(context->core->debugger, DEBUGGER_ENTER_MANUAL, NULL);
402 }
403 return;
404#endif
405#ifdef USE_PNG
406 case SDLK_F12:
407 mCoreTakeScreenshot(context->core);
408 return;
409#endif
410 case SDLK_BACKSLASH:
411 mCoreThreadPause(context);
412 context->frameCallback = _pauseAfterFrame;
413 mCoreThreadUnpause(context);
414 return;
415#ifdef BUILD_PANDORA
416 case SDLK_ESCAPE:
417 mCoreThreadEnd(context);
418 return;
419#endif
420 default:
421 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
422 switch (event->keysym.sym) {
423#if SDL_VERSION_ATLEAST(2, 0, 0)
424 case SDLK_f:
425 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
426 sdlContext->fullscreen = !sdlContext->fullscreen;
427 sdlContext->windowUpdated = 1;
428 break;
429#endif
430 case SDLK_p:
431 mCoreThreadTogglePause(context);
432 break;
433 case SDLK_n:
434 mCoreThreadPause(context);
435 context->frameCallback = _pauseAfterFrame;
436 mCoreThreadUnpause(context);
437 break;
438 case SDLK_r:
439 mCoreThreadReset(context);
440 break;
441 default:
442 break;
443 }
444 }
445 if (event->keysym.mod & KMOD_SHIFT) {
446 switch (event->keysym.sym) {
447 case SDLK_F1:
448 case SDLK_F2:
449 case SDLK_F3:
450 case SDLK_F4:
451 case SDLK_F5:
452 case SDLK_F6:
453 case SDLK_F7:
454 case SDLK_F8:
455 case SDLK_F9:
456 mCoreThreadInterrupt(context);
457 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SAVEDATA | SAVESTATE_SCREENSHOT);
458 mCoreThreadContinue(context);
459 break;
460 default:
461 break;
462 }
463 } else {
464 switch (event->keysym.sym) {
465 case SDLK_F1:
466 case SDLK_F2:
467 case SDLK_F3:
468 case SDLK_F4:
469 case SDLK_F5:
470 case SDLK_F6:
471 case SDLK_F7:
472 case SDLK_F8:
473 case SDLK_F9:
474 mCoreThreadInterrupt(context);
475 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
476 mCoreThreadContinue(context);
477 break;
478 default:
479 break;
480 }
481 }
482 return;
483 }
484 }
485}
486
487static void _mSDLHandleJoyButton(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
488 int key = 0;
489 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
490 if (key == -1) {
491 return;
492 }
493
494 if (event->type == SDL_JOYBUTTONDOWN) {
495 core->addKeys(core, 1 << key);
496 } else {
497 core->clearKeys(core, 1 << key);
498 }
499}
500
501static void _mSDLHandleJoyAxis(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
502 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
503 int newKeys = 0;
504 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
505 if (key != -1) {
506 newKeys |= 1 << key;
507 }
508 clearKeys &= ~newKeys;
509 core->clearKeys(core, clearKeys);
510 core->addKeys(core, newKeys);
511
512}
513
514#if SDL_VERSION_ATLEAST(2, 0, 0)
515static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
516 switch (event->event) {
517 case SDL_WINDOWEVENT_SIZE_CHANGED:
518 sdlContext->windowUpdated = 1;
519 break;
520 }
521}
522#endif
523
524void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
525 switch (event->type) {
526 case SDL_QUIT:
527 mCoreThreadEnd(context);
528 break;
529#if SDL_VERSION_ATLEAST(2, 0, 0)
530 case SDL_WINDOWEVENT:
531 _mSDLHandleWindowEvent(sdlContext, &event->window);
532 break;
533#endif
534 case SDL_KEYDOWN:
535 case SDL_KEYUP:
536 _mSDLHandleKeypress(context, sdlContext, &event->key);
537 break;
538 case SDL_JOYBUTTONDOWN:
539 case SDL_JOYBUTTONUP:
540 _mSDLHandleJoyButton(context->core, sdlContext, &event->jbutton);
541 break;
542 case SDL_JOYHATMOTION:
543 // TODO
544 break;
545 case SDL_JOYAXISMOTION:
546 _mSDLHandleJoyAxis(context->core, sdlContext, &event->jaxis);
547 break;
548 }
549}
550
551#if SDL_VERSION_ATLEAST(2, 0, 0)
552static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
553 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
554 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
555 return;
556 }
557 int8_t originalLevel = sdlRumble->level;
558 sdlRumble->level += enable;
559 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
560 int8_t oldLevel;
561 CircleBufferRead8(&sdlRumble->history, &oldLevel);
562 sdlRumble->level -= oldLevel;
563 }
564 CircleBufferWrite8(&sdlRumble->history, enable);
565 if (sdlRumble->level == originalLevel) {
566 return;
567 }
568 float activeLevel = ceil(RUMBLE_STEPS * sdlRumble->level / (float) RUMBLE_PWM) / RUMBLE_STEPS;
569 if (fabsf(sdlRumble->activeLevel - activeLevel) < 0.75 / RUMBLE_STEPS) {
570 return;
571 }
572 sdlRumble->activeLevel = activeLevel;
573 if (sdlRumble->activeLevel > 0.5 / RUMBLE_STEPS) {
574 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
575 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, activeLevel, 500);
576 } else {
577 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
578 }
579}
580#endif
581
582static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
583 if (!player->joystick) {
584 return 0;
585 }
586 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
587}
588
589static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
590 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
591 return _readTilt(rotation->p, rotation->axisX);
592}
593
594static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
595 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
596 return _readTilt(rotation->p, rotation->axisY);
597}
598
599static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
600 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
601 float z = rotation->zDelta;
602 return z * rotation->gyroSensitivity;
603}
604
605static void _mSDLRotationSample(struct mRotationSource* source) {
606 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
607 SDL_JoystickUpdate();
608 if (!rotation->p->joystick) {
609 return;
610 }
611
612 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
613 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
614 union {
615 float f;
616 int32_t i;
617 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
618 if (isnan(theta.f)) {
619 theta.f = 0.0f;
620 } else if (theta.f > M_PI) {
621 theta.f -= 2.0f * M_PI;
622 } else if (theta.f < -M_PI) {
623 theta.f += 2.0f * M_PI;
624 }
625 rotation->oldX = x;
626 rotation->oldY = y;
627
628 float oldZ = 0;
629 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
630 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
631 }
632 CircleBufferWrite32(&rotation->zHistory, theta.i);
633 rotation->zDelta += theta.f - oldZ;
634}
635
636#if SDL_VERSION_ATLEAST(2, 0, 0)
637void mSDLSuspendScreensaver(struct mSDLEvents* events) {
638 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
639 SDL_DisableScreenSaver();
640 }
641 ++events->screensaverSuspendDepth;
642}
643
644void mSDLResumeScreensaver(struct mSDLEvents* events) {
645 --events->screensaverSuspendDepth;
646 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
647 SDL_EnableScreenSaver();
648 }
649}
650
651void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
652 bool wasSuspendable = events->screensaverSuspendable;
653 events->screensaverSuspendable = suspendable;
654 if (events->screensaverSuspendDepth > 0) {
655 if (suspendable && !wasSuspendable) {
656 SDL_DisableScreenSaver();
657 } else if (!suspendable && wasSuspendable) {
658 SDL_EnableScreenSaver();
659 }
660 } else {
661 SDL_EnableScreenSaver();
662 }
663}
664#endif