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 mInputBindHat(inputMap, SDL_BINDING_BUTTON, 0, &GBAInputInfo.hat);
146}
147
148bool mSDLAttachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
149 player->joystick = 0;
150
151 if (events->playersAttached >= MAX_PLAYERS) {
152 return false;
153 }
154
155#if SDL_VERSION_ATLEAST(2, 0, 0)
156 player->rumble.d.setRumble = _mSDLSetRumble;
157 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
158 player->rumble.level = 0;
159 player->rumble.activeLevel = 0;
160 player->rumble.p = player;
161#endif
162
163 player->rotation.d.readTiltX = _mSDLReadTiltX;
164 player->rotation.d.readTiltY = _mSDLReadTiltY;
165 player->rotation.d.readGyroZ = _mSDLReadGyroZ;
166 player->rotation.d.sample = _mSDLRotationSample;
167 player->rotation.axisX = 2;
168 player->rotation.axisY = 3;
169 player->rotation.gyroSensitivity = 2.2e9f;
170 player->rotation.gyroX = 0;
171 player->rotation.gyroY = 1;
172 player->rotation.zDelta = 0;
173 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
174 player->rotation.p = player;
175
176 player->playerId = events->playersAttached;
177 events->players[player->playerId] = player;
178 size_t firstUnclaimed = SIZE_MAX;
179 size_t index = SIZE_MAX;
180
181 size_t i;
182 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
183 bool claimed = false;
184
185 int p;
186 for (p = 0; p < events->playersAttached; ++p) {
187 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
188 claimed = true;
189 break;
190 }
191 }
192 if (claimed) {
193 continue;
194 }
195
196 if (firstUnclaimed == SIZE_MAX) {
197 firstUnclaimed = i;
198 }
199
200 const char* joystickName;
201#if SDL_VERSION_ATLEAST(2, 0, 0)
202 joystickName = SDL_JoystickName(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick);
203#else
204 joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
205#endif
206 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
207 index = i;
208 break;
209 }
210 }
211
212 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
213 index = firstUnclaimed;
214 }
215
216 if (index != SIZE_MAX) {
217 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
218
219#if SDL_VERSION_ATLEAST(2, 0, 0)
220 if (player->joystick->haptic) {
221 SDL_HapticRumbleInit(player->joystick->haptic);
222 }
223#endif
224 }
225
226 ++events->playersAttached;
227 return true;
228}
229
230void mSDLDetachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
231 if (player != events->players[player->playerId]) {
232 return;
233 }
234 int i;
235 for (i = player->playerId; i < events->playersAttached; ++i) {
236 if (i + 1 < MAX_PLAYERS) {
237 events->players[i] = events->players[i + 1];
238 }
239 if (i < events->playersAttached - 1) {
240 events->players[i]->playerId = i;
241 }
242 }
243 --events->playersAttached;
244 CircleBufferDeinit(&player->rotation.zHistory);
245}
246
247void mSDLPlayerLoadConfig(struct mSDLPlayer* context, const struct Configuration* config) {
248 mInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
249 if (context->joystick) {
250 mInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
251#if SDL_VERSION_ATLEAST(2, 0, 0)
252 const char* name = SDL_JoystickName(context->joystick->joystick);
253#else
254 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
255#endif
256 mInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
257
258 const char* value;
259 char* end;
260 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
261 int axis;
262 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", name);
263 if (value) {
264 axis = strtol(value, &end, 0);
265 if (axis >= 0 && axis < numAxes && end && !*end) {
266 context->rotation.axisX = axis;
267 }
268 }
269 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", name);
270 if (value) {
271 axis = strtol(value, &end, 0);
272 if (axis >= 0 && axis < numAxes && end && !*end) {
273 context->rotation.axisY = axis;
274 }
275 }
276 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", name);
277 if (value) {
278 axis = strtol(value, &end, 0);
279 if (axis >= 0 && axis < numAxes && end && !*end) {
280 context->rotation.gyroX = axis;
281 }
282 }
283 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", name);
284 if (value) {
285 axis = strtol(value, &end, 0);
286 if (axis >= 0 && axis < numAxes && end && !*end) {
287 context->rotation.gyroY = axis;
288 }
289 }
290 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", name);
291 if (value) {
292 float sensitivity = strtof_u(value, &end);
293 if (end && !*end) {
294 context->rotation.gyroSensitivity = sensitivity;
295 }
296 }
297 }
298}
299
300void mSDLPlayerSaveConfig(const struct mSDLPlayer* context, struct Configuration* config) {
301 if (context->joystick) {
302#if SDL_VERSION_ATLEAST(2, 0, 0)
303 const char* name = SDL_JoystickName(context->joystick->joystick);
304#else
305 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
306#endif
307 char value[12];
308 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
309 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", value, name);
310 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
311 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", value, name);
312 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
313 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", value, name);
314 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
315 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", value, name);
316 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
317 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
318 }
319}
320
321void mSDLPlayerChangeJoystick(struct mSDLEvents* events, struct mSDLPlayer* player, size_t index) {
322 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
323 return;
324 }
325 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
326}
327
328void mSDLUpdateJoysticks(struct mSDLEvents* events) {
329 // Pump SDL joystick events without eating the rest of the events
330 SDL_JoystickUpdate();
331#if SDL_VERSION_ATLEAST(2, 0, 0)
332 SDL_Event event;
333 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
334 if (event.type == SDL_JOYDEVICEADDED) {
335 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
336 joystick->joystick = SDL_JoystickOpen(event.jdevice.which);
337 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
338 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
339#if SDL_VERSION_ATLEAST(2, 0, 0)
340 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
341#endif
342 } else if (event.type == SDL_JOYDEVICEREMOVED) {
343 SDL_JoystickID ids[MAX_PLAYERS];
344 size_t i;
345 for (i = 0; (int) i < events->playersAttached; ++i) {
346 if (events->players[i]->joystick) {
347 ids[i] = events->players[i]->joystick->id;
348 events->players[i]->joystick = 0;
349 } else {
350 ids[i] = -1;
351 }
352 }
353 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
354 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
355 if (joystick->id == event.jdevice.which) {
356 SDL_JoystickListShift(&events->joysticks, i, 1);
357 continue;
358 }
359 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
360 int p;
361 for (p = 0; p < events->playersAttached; ++p) {
362 if (joystick->id == ids[p]) {
363 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
364 }
365 }
366 ++i;
367 }
368 }
369 }
370#endif
371}
372
373static void _pauseAfterFrame(struct mCoreThread* context) {
374 context->frameCallback = 0;
375 mCoreThreadPauseFromThread(context);
376}
377
378static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
379 int key = -1;
380 if (!event->keysym.mod) {
381 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
382 }
383 if (key != -1) {
384 if (event->type == SDL_KEYDOWN) {
385 context->core->addKeys(context->core, 1 << key);
386 } else {
387 context->core->clearKeys(context->core, 1 << key);
388 }
389 return;
390 }
391 if (event->keysym.sym == SDLK_TAB) {
392 context->sync.audioWait = event->type != SDL_KEYDOWN;
393 return;
394 }
395 if (event->keysym.sym == SDLK_BACKQUOTE) {
396 mCoreThreadSetRewinding(context, event->type == SDL_KEYDOWN);
397 }
398 if (event->type == SDL_KEYDOWN) {
399 switch (event->keysym.sym) {
400#ifdef USE_DEBUGGERS
401 case SDLK_F11:
402 if (context->core->debugger) {
403 mDebuggerEnter(context->core->debugger, DEBUGGER_ENTER_MANUAL, NULL);
404 }
405 return;
406#endif
407#ifdef USE_PNG
408 case SDLK_F12:
409 mCoreTakeScreenshot(context->core);
410 return;
411#endif
412 case SDLK_BACKSLASH:
413 mCoreThreadPause(context);
414 context->frameCallback = _pauseAfterFrame;
415 mCoreThreadUnpause(context);
416 return;
417#ifdef BUILD_PANDORA
418 case SDLK_ESCAPE:
419 mCoreThreadEnd(context);
420 return;
421#endif
422 default:
423 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
424 switch (event->keysym.sym) {
425#if SDL_VERSION_ATLEAST(2, 0, 0)
426 case SDLK_f:
427 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
428 sdlContext->fullscreen = !sdlContext->fullscreen;
429 sdlContext->windowUpdated = 1;
430 break;
431#endif
432 case SDLK_p:
433 mCoreThreadTogglePause(context);
434 break;
435 case SDLK_n:
436 mCoreThreadPause(context);
437 context->frameCallback = _pauseAfterFrame;
438 mCoreThreadUnpause(context);
439 break;
440 case SDLK_r:
441 mCoreThreadReset(context);
442 break;
443 default:
444 break;
445 }
446 }
447 if (event->keysym.mod & KMOD_SHIFT) {
448 switch (event->keysym.sym) {
449 case SDLK_F1:
450 case SDLK_F2:
451 case SDLK_F3:
452 case SDLK_F4:
453 case SDLK_F5:
454 case SDLK_F6:
455 case SDLK_F7:
456 case SDLK_F8:
457 case SDLK_F9:
458 mCoreThreadInterrupt(context);
459 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SAVEDATA | SAVESTATE_SCREENSHOT);
460 mCoreThreadContinue(context);
461 break;
462 default:
463 break;
464 }
465 } else {
466 switch (event->keysym.sym) {
467 case SDLK_F1:
468 case SDLK_F2:
469 case SDLK_F3:
470 case SDLK_F4:
471 case SDLK_F5:
472 case SDLK_F6:
473 case SDLK_F7:
474 case SDLK_F8:
475 case SDLK_F9:
476 mCoreThreadInterrupt(context);
477 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
478 mCoreThreadContinue(context);
479 break;
480 default:
481 break;
482 }
483 }
484 return;
485 }
486 }
487}
488
489static void _mSDLHandleJoyButton(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
490 int key = 0;
491 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
492 if (key == -1) {
493 return;
494 }
495
496 if (event->type == SDL_JOYBUTTONDOWN) {
497 core->addKeys(core, 1 << key);
498 } else {
499 core->clearKeys(core, 1 << key);
500 }
501}
502
503static void _mSDLHandleJoyHat(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyHatEvent* event) {
504 int allKeys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, -1);
505 if (allKeys == 0) {
506 return;
507 }
508
509 int keys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, event->value);
510
511 core->clearKeys(core, allKeys ^ keys);
512 core->addKeys(core, keys);
513}
514
515static void _mSDLHandleJoyAxis(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
516 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
517 int newKeys = 0;
518 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
519 if (key != -1) {
520 newKeys |= 1 << key;
521 }
522 clearKeys &= ~newKeys;
523 core->clearKeys(core, clearKeys);
524 core->addKeys(core, newKeys);
525
526}
527
528#if SDL_VERSION_ATLEAST(2, 0, 0)
529static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
530 switch (event->event) {
531 case SDL_WINDOWEVENT_SIZE_CHANGED:
532 sdlContext->windowUpdated = 1;
533 break;
534 }
535}
536#endif
537
538void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
539 switch (event->type) {
540 case SDL_QUIT:
541 mCoreThreadEnd(context);
542 break;
543#if SDL_VERSION_ATLEAST(2, 0, 0)
544 case SDL_WINDOWEVENT:
545 _mSDLHandleWindowEvent(sdlContext, &event->window);
546 break;
547#endif
548 case SDL_KEYDOWN:
549 case SDL_KEYUP:
550 _mSDLHandleKeypress(context, sdlContext, &event->key);
551 break;
552 case SDL_JOYBUTTONDOWN:
553 case SDL_JOYBUTTONUP:
554 _mSDLHandleJoyButton(context->core, sdlContext, &event->jbutton);
555 break;
556 case SDL_JOYHATMOTION:
557 _mSDLHandleJoyHat(context->core, sdlContext, &event->jhat);
558 break;
559 case SDL_JOYAXISMOTION:
560 _mSDLHandleJoyAxis(context->core, sdlContext, &event->jaxis);
561 break;
562 }
563}
564
565#if SDL_VERSION_ATLEAST(2, 0, 0)
566static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
567 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
568 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
569 return;
570 }
571 int8_t originalLevel = sdlRumble->level;
572 sdlRumble->level += enable;
573 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
574 int8_t oldLevel;
575 CircleBufferRead8(&sdlRumble->history, &oldLevel);
576 sdlRumble->level -= oldLevel;
577 }
578 CircleBufferWrite8(&sdlRumble->history, enable);
579 if (sdlRumble->level == originalLevel) {
580 return;
581 }
582 float activeLevel = ceil(RUMBLE_STEPS * sdlRumble->level / (float) RUMBLE_PWM) / RUMBLE_STEPS;
583 if (fabsf(sdlRumble->activeLevel - activeLevel) < 0.75 / RUMBLE_STEPS) {
584 return;
585 }
586 sdlRumble->activeLevel = activeLevel;
587 if (sdlRumble->activeLevel > 0.5 / RUMBLE_STEPS) {
588 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
589 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, activeLevel, 500);
590 } else {
591 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
592 }
593}
594#endif
595
596static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
597 if (!player->joystick) {
598 return 0;
599 }
600 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
601}
602
603static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
604 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
605 return _readTilt(rotation->p, rotation->axisX);
606}
607
608static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
609 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
610 return _readTilt(rotation->p, rotation->axisY);
611}
612
613static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
614 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
615 float z = rotation->zDelta;
616 return z * rotation->gyroSensitivity;
617}
618
619static void _mSDLRotationSample(struct mRotationSource* source) {
620 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
621 SDL_JoystickUpdate();
622 if (!rotation->p->joystick) {
623 return;
624 }
625
626 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
627 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
628 union {
629 float f;
630 int32_t i;
631 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
632 if (isnan(theta.f)) {
633 theta.f = 0.0f;
634 } else if (theta.f > M_PI) {
635 theta.f -= 2.0f * M_PI;
636 } else if (theta.f < -M_PI) {
637 theta.f += 2.0f * M_PI;
638 }
639 rotation->oldX = x;
640 rotation->oldY = y;
641
642 float oldZ = 0;
643 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
644 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
645 }
646 CircleBufferWrite32(&rotation->zHistory, theta.i);
647 rotation->zDelta += theta.f - oldZ;
648}
649
650#if SDL_VERSION_ATLEAST(2, 0, 0)
651void mSDLSuspendScreensaver(struct mSDLEvents* events) {
652 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
653 SDL_DisableScreenSaver();
654 }
655 ++events->screensaverSuspendDepth;
656}
657
658void mSDLResumeScreensaver(struct mSDLEvents* events) {
659 --events->screensaverSuspendDepth;
660 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
661 SDL_EnableScreenSaver();
662 }
663}
664
665void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
666 bool wasSuspendable = events->screensaverSuspendable;
667 events->screensaverSuspendable = suspendable;
668 if (events->screensaverSuspendDepth > 0) {
669 if (suspendable && !wasSuspendable) {
670 SDL_DisableScreenSaver();
671 } else if (!suspendable && wasSuspendable) {
672 SDL_EnableScreenSaver();
673 }
674 } else {
675 SDL_EnableScreenSaver();
676 }
677}
678#endif