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/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", "platform.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, NULL);
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, const struct Configuration* config) {
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
343 const char* joystickName;
344#if SDL_VERSION_ATLEAST(2, 0, 0)
345 joystickName = SDL_JoystickName(joystick->joystick);
346#else
347 joystickName = SDL_JoystickName(SDL_JoystickIndex(joystick->joystick));
348#endif
349 size_t i;
350 for (i = 0; (int) i < events->playersAttached; ++i) {
351 if (events->players[i]->joystick) {
352 continue;
353 }
354 if (events->preferredJoysticks[i] && strcmp(events->preferredJoysticks[i], joystickName) == 0) {
355 events->players[i]->joystick = joystick;
356 if (config) {
357 mInputProfileLoad(events->players[i]->bindings, SDL_BINDING_BUTTON, config, joystickName);
358 }
359 return;
360 }
361 }
362 for (i = 0; (int) i < events->playersAttached; ++i) {
363 if (events->players[i]->joystick) {
364 continue;
365 }
366 events->players[i]->joystick = joystick;
367 if (config) {
368 mInputProfileLoad(events->players[i]->bindings, SDL_BINDING_BUTTON, config, joystickName);
369 }
370 break;
371 }
372 } else if (event.type == SDL_JOYDEVICEREMOVED) {
373 SDL_JoystickID ids[MAX_PLAYERS] = { 0 };
374 size_t i;
375 for (i = 0; (int) i < events->playersAttached; ++i) {
376 if (events->players[i]->joystick) {
377 ids[i] = events->players[i]->joystick->id;
378 events->players[i]->joystick = 0;
379 } else {
380 ids[i] = -1;
381 }
382 }
383 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
384 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
385 if (joystick->id == event.jdevice.which) {
386 SDL_JoystickListShift(&events->joysticks, i, 1);
387 continue;
388 }
389 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
390 int p;
391 for (p = 0; p < events->playersAttached; ++p) {
392 if (joystick->id == ids[p]) {
393 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
394 }
395 }
396 ++i;
397 }
398 }
399 }
400#endif
401}
402
403static void _pauseAfterFrame(struct mCoreThread* context) {
404 context->frameCallback = 0;
405 mCoreThreadPauseFromThread(context);
406}
407
408static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
409 int key = -1;
410 if (!event->keysym.mod) {
411 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
412 }
413 if (key != -1) {
414 if (event->type == SDL_KEYDOWN) {
415 context->core->addKeys(context->core, 1 << key);
416 } else {
417 context->core->clearKeys(context->core, 1 << key);
418 }
419 return;
420 }
421 if (event->keysym.sym == SDLK_TAB) {
422 context->impl->sync.audioWait = event->type != SDL_KEYDOWN;
423 return;
424 }
425 if (event->keysym.sym == SDLK_BACKQUOTE) {
426 mCoreThreadSetRewinding(context, event->type == SDL_KEYDOWN);
427 }
428 if (event->type == SDL_KEYDOWN) {
429 switch (event->keysym.sym) {
430#ifdef USE_DEBUGGERS
431 case SDLK_F11:
432 if (context->core->debugger) {
433 mDebuggerEnter(context->core->debugger, DEBUGGER_ENTER_MANUAL, NULL);
434 }
435 return;
436#endif
437#ifdef USE_PNG
438 case SDLK_F12:
439 mCoreTakeScreenshot(context->core);
440 return;
441#endif
442 case SDLK_BACKSLASH:
443 mCoreThreadPause(context);
444 context->frameCallback = _pauseAfterFrame;
445 mCoreThreadUnpause(context);
446 return;
447#ifdef BUILD_PANDORA
448 case SDLK_ESCAPE:
449 mCoreThreadEnd(context);
450 return;
451#endif
452 default:
453 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
454 switch (event->keysym.sym) {
455#if SDL_VERSION_ATLEAST(2, 0, 0)
456 case SDLK_f:
457 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
458 sdlContext->fullscreen = !sdlContext->fullscreen;
459 sdlContext->windowUpdated = 1;
460 break;
461#endif
462 case SDLK_p:
463 mCoreThreadTogglePause(context);
464 break;
465 case SDLK_n:
466 mCoreThreadPause(context);
467 context->frameCallback = _pauseAfterFrame;
468 mCoreThreadUnpause(context);
469 break;
470 case SDLK_r:
471 mCoreThreadReset(context);
472 break;
473 default:
474 break;
475 }
476 }
477 if (event->keysym.mod & KMOD_SHIFT) {
478 switch (event->keysym.sym) {
479 case SDLK_F1:
480 case SDLK_F2:
481 case SDLK_F3:
482 case SDLK_F4:
483 case SDLK_F5:
484 case SDLK_F6:
485 case SDLK_F7:
486 case SDLK_F8:
487 case SDLK_F9:
488 mCoreThreadInterrupt(context);
489 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SAVEDATA | SAVESTATE_SCREENSHOT);
490 mCoreThreadContinue(context);
491 break;
492 default:
493 break;
494 }
495 } else {
496 switch (event->keysym.sym) {
497 case SDLK_F1:
498 case SDLK_F2:
499 case SDLK_F3:
500 case SDLK_F4:
501 case SDLK_F5:
502 case SDLK_F6:
503 case SDLK_F7:
504 case SDLK_F8:
505 case SDLK_F9:
506 mCoreThreadInterrupt(context);
507 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
508 mCoreThreadContinue(context);
509 break;
510 default:
511 break;
512 }
513 }
514 return;
515 }
516 }
517}
518
519static void _mSDLHandleJoyButton(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
520 int key = 0;
521 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
522 if (key == -1) {
523 return;
524 }
525
526 if (event->type == SDL_JOYBUTTONDOWN) {
527 core->addKeys(core, 1 << key);
528 } else {
529 core->clearKeys(core, 1 << key);
530 }
531}
532
533static void _mSDLHandleJoyHat(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyHatEvent* event) {
534 int allKeys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, -1);
535 if (allKeys == 0) {
536 return;
537 }
538
539 int keys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, event->value);
540
541 core->clearKeys(core, allKeys ^ keys);
542 core->addKeys(core, keys);
543}
544
545static void _mSDLHandleJoyAxis(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
546 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
547 int newKeys = 0;
548 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
549 if (key != -1) {
550 newKeys |= 1 << key;
551 }
552 clearKeys &= ~newKeys;
553 core->clearKeys(core, clearKeys);
554 core->addKeys(core, newKeys);
555
556}
557
558#if SDL_VERSION_ATLEAST(2, 0, 0)
559static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
560 switch (event->event) {
561 case SDL_WINDOWEVENT_SIZE_CHANGED:
562 sdlContext->windowUpdated = 1;
563 break;
564 }
565}
566#endif
567
568void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
569 switch (event->type) {
570 case SDL_QUIT:
571 mCoreThreadEnd(context);
572 break;
573#if SDL_VERSION_ATLEAST(2, 0, 0)
574 case SDL_WINDOWEVENT:
575 _mSDLHandleWindowEvent(sdlContext, &event->window);
576 break;
577#endif
578 case SDL_KEYDOWN:
579 case SDL_KEYUP:
580 _mSDLHandleKeypress(context, sdlContext, &event->key);
581 break;
582 case SDL_JOYBUTTONDOWN:
583 case SDL_JOYBUTTONUP:
584 _mSDLHandleJoyButton(context->core, sdlContext, &event->jbutton);
585 break;
586 case SDL_JOYHATMOTION:
587 _mSDLHandleJoyHat(context->core, sdlContext, &event->jhat);
588 break;
589 case SDL_JOYAXISMOTION:
590 _mSDLHandleJoyAxis(context->core, sdlContext, &event->jaxis);
591 break;
592 }
593}
594
595#if SDL_VERSION_ATLEAST(2, 0, 0)
596static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
597 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
598 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
599 return;
600 }
601 int8_t originalLevel = sdlRumble->level;
602 sdlRumble->level += enable;
603 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
604 int8_t oldLevel;
605 CircleBufferRead8(&sdlRumble->history, &oldLevel);
606 sdlRumble->level -= oldLevel;
607 }
608 CircleBufferWrite8(&sdlRumble->history, enable);
609 if (sdlRumble->level == originalLevel) {
610 return;
611 }
612 float activeLevel = ceil(RUMBLE_STEPS * sdlRumble->level / (float) RUMBLE_PWM) / RUMBLE_STEPS;
613 if (fabsf(sdlRumble->activeLevel - activeLevel) < 0.75 / RUMBLE_STEPS) {
614 return;
615 }
616 sdlRumble->activeLevel = activeLevel;
617 if (sdlRumble->activeLevel > 0.5 / RUMBLE_STEPS) {
618 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
619 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, activeLevel, 500);
620 } else {
621 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
622 }
623}
624#endif
625
626static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
627 if (!player->joystick) {
628 return 0;
629 }
630 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
631}
632
633static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
634 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
635 return _readTilt(rotation->p, rotation->axisX);
636}
637
638static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
639 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
640 return _readTilt(rotation->p, rotation->axisY);
641}
642
643static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
644 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
645 float z = rotation->zDelta;
646 return z * rotation->gyroSensitivity;
647}
648
649static void _mSDLRotationSample(struct mRotationSource* source) {
650 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
651 SDL_JoystickUpdate();
652 if (!rotation->p->joystick) {
653 return;
654 }
655
656 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
657 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
658 union {
659 float f;
660 int32_t i;
661 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
662 if (isnan(theta.f)) {
663 theta.f = 0.0f;
664 } else if (theta.f > M_PI) {
665 theta.f -= 2.0f * M_PI;
666 } else if (theta.f < -M_PI) {
667 theta.f += 2.0f * M_PI;
668 }
669 rotation->oldX = x;
670 rotation->oldY = y;
671
672 float oldZ = 0;
673 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
674 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
675 }
676 CircleBufferWrite32(&rotation->zHistory, theta.i);
677 rotation->zDelta += theta.f - oldZ;
678}
679
680#if SDL_VERSION_ATLEAST(2, 0, 0)
681void mSDLSuspendScreensaver(struct mSDLEvents* events) {
682 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
683 SDL_DisableScreenSaver();
684 }
685 ++events->screensaverSuspendDepth;
686}
687
688void mSDLResumeScreensaver(struct mSDLEvents* events) {
689 --events->screensaverSuspendDepth;
690 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
691 SDL_EnableScreenSaver();
692 }
693}
694
695void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
696 bool wasSuspendable = events->screensaverSuspendable;
697 events->screensaverSuspendable = suspendable;
698 if (events->screensaverSuspendDepth > 0) {
699 if (suspendable && !wasSuspendable) {
700 SDL_DisableScreenSaver();
701 } else if (!suspendable && wasSuspendable) {
702 SDL_EnableScreenSaver();
703 }
704 } else {
705 SDL_EnableScreenSaver();
706 }
707}
708#endif