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 SDL_Joystick* sdlJoystick = SDL_JoystickOpen(i);
68 if (!sdlJoystick) {
69 continue;
70 }
71 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&context->joysticks);
72 joystick->joystick = sdlJoystick;
73 joystick->index = SDL_JoystickListSize(&context->joysticks) - 1;
74#if SDL_VERSION_ATLEAST(2, 0, 0)
75 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
76 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
77#else
78 joystick->id = SDL_JoystickIndex(joystick->joystick);
79#endif
80 }
81 }
82 }
83
84 context->playersAttached = 0;
85
86 size_t i;
87 for (i = 0; i < MAX_PLAYERS; ++i) {
88 context->preferredJoysticks[i] = 0;
89 }
90
91#if !SDL_VERSION_ATLEAST(2, 0, 0)
92 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
93#else
94 context->screensaverSuspendDepth = 0;
95#endif
96 return true;
97}
98
99void mSDLDeinitEvents(struct mSDLEvents* context) {
100 size_t i;
101 for (i = 0; i < SDL_JoystickListSize(&context->joysticks); ++i) {
102 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&context->joysticks, i);
103#if SDL_VERSION_ATLEAST(2, 0, 0)
104 SDL_HapticClose(joystick->haptic);
105#endif
106 SDL_JoystickClose(joystick->joystick);
107 }
108 SDL_JoystickListDeinit(&context->joysticks);
109 SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
110}
111
112void mSDLEventsLoadConfig(struct mSDLEvents* context, const struct Configuration* config) {
113 context->preferredJoysticks[0] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 0);
114 context->preferredJoysticks[1] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 1);
115 context->preferredJoysticks[2] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 2);
116 context->preferredJoysticks[3] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 3);
117}
118
119void mSDLInitBindingsGBA(struct mInputMap* inputMap) {
120#ifdef BUILD_PANDORA
121 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_PAGEDOWN, GBA_KEY_A);
122 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_END, GBA_KEY_B);
123 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RSHIFT, GBA_KEY_L);
124 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RCTRL, GBA_KEY_R);
125 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LALT, GBA_KEY_START);
126 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LCTRL, GBA_KEY_SELECT);
127 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
128 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
129 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
130 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
131#else
132 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
133 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
134 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
135 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
136 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
137 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
138 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
139 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
140 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
141 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
142#endif
143
144 struct mInputAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
145 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
146 description = (struct mInputAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
147 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
148
149 mInputBindHat(inputMap, SDL_BINDING_BUTTON, 0, &GBAInputInfo.hat);
150}
151
152bool mSDLAttachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
153 player->joystick = 0;
154
155 if (events->playersAttached >= MAX_PLAYERS) {
156 return false;
157 }
158
159#if SDL_VERSION_ATLEAST(2, 0, 0)
160 player->rumble.d.setRumble = _mSDLSetRumble;
161 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
162 player->rumble.level = 0;
163 player->rumble.activeLevel = 0;
164 player->rumble.p = player;
165#endif
166
167 player->rotation.d.readTiltX = _mSDLReadTiltX;
168 player->rotation.d.readTiltY = _mSDLReadTiltY;
169 player->rotation.d.readGyroZ = _mSDLReadGyroZ;
170 player->rotation.d.sample = _mSDLRotationSample;
171 player->rotation.axisX = 2;
172 player->rotation.axisY = 3;
173 player->rotation.gyroSensitivity = 2.2e9f;
174 player->rotation.gyroX = 0;
175 player->rotation.gyroY = 1;
176 player->rotation.zDelta = 0;
177 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
178 player->rotation.p = player;
179
180 player->playerId = events->playersAttached;
181 events->players[player->playerId] = player;
182 size_t firstUnclaimed = SIZE_MAX;
183 size_t index = SIZE_MAX;
184
185 size_t i;
186 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
187 bool claimed = false;
188
189 int p;
190 for (p = 0; p < events->playersAttached; ++p) {
191 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
192 claimed = true;
193 break;
194 }
195 }
196 if (claimed) {
197 continue;
198 }
199
200 if (firstUnclaimed == SIZE_MAX) {
201 firstUnclaimed = i;
202 }
203
204#if SDL_VERSION_ATLEAST(2, 0, 0)
205 char joystickName[34] = {0};
206 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick), joystickName, sizeof(joystickName));
207#else
208 const char* joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
209 if (!joystickName) {
210 continue;
211 }
212#endif
213 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
214 index = i;
215 break;
216 }
217 }
218
219 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
220 index = firstUnclaimed;
221 }
222
223 if (index != SIZE_MAX) {
224 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
225
226#if SDL_VERSION_ATLEAST(2, 0, 0)
227 if (player->joystick->haptic) {
228 SDL_HapticRumbleInit(player->joystick->haptic);
229 }
230#endif
231 }
232
233 ++events->playersAttached;
234 return true;
235}
236
237void mSDLDetachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
238 if (player != events->players[player->playerId]) {
239 return;
240 }
241 int i;
242 for (i = player->playerId; i < events->playersAttached; ++i) {
243 if (i + 1 < MAX_PLAYERS) {
244 events->players[i] = events->players[i + 1];
245 }
246 if (i < events->playersAttached - 1) {
247 events->players[i]->playerId = i;
248 }
249 }
250 --events->playersAttached;
251 CircleBufferDeinit(&player->rotation.zHistory);
252#if SDL_VERSION_ATLEAST(2, 0, 0)
253 CircleBufferDeinit(&player->rumble.history);
254#endif
255}
256
257void mSDLPlayerLoadConfig(struct mSDLPlayer* context, const struct Configuration* config) {
258 mInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
259 if (context->joystick) {
260 mInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
261#if SDL_VERSION_ATLEAST(2, 0, 0)
262 char name[34] = {0};
263 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(context->joystick->joystick), name, sizeof(name));
264#else
265 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
266 if (!name) {
267 return;
268 }
269#endif
270 mInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
271
272 const char* value;
273 char* end;
274 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
275 int axis;
276 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", name);
277 if (value) {
278 axis = strtol(value, &end, 0);
279 if (axis >= 0 && axis < numAxes && end && !*end) {
280 context->rotation.axisX = axis;
281 }
282 }
283 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", name);
284 if (value) {
285 axis = strtol(value, &end, 0);
286 if (axis >= 0 && axis < numAxes && end && !*end) {
287 context->rotation.axisY = axis;
288 }
289 }
290 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", name);
291 if (value) {
292 axis = strtol(value, &end, 0);
293 if (axis >= 0 && axis < numAxes && end && !*end) {
294 context->rotation.gyroX = axis;
295 }
296 }
297 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", name);
298 if (value) {
299 axis = strtol(value, &end, 0);
300 if (axis >= 0 && axis < numAxes && end && !*end) {
301 context->rotation.gyroY = axis;
302 }
303 }
304 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", name);
305 if (value) {
306 float sensitivity = strtof_u(value, &end);
307 if (end && !*end) {
308 context->rotation.gyroSensitivity = sensitivity;
309 }
310 }
311 }
312}
313
314void mSDLPlayerSaveConfig(const struct mSDLPlayer* context, struct Configuration* config) {
315 if (context->joystick) {
316#if SDL_VERSION_ATLEAST(2, 0, 0)
317 char name[34] = {0};
318 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(context->joystick->joystick), name, sizeof(name));
319#else
320 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
321 if (!name) {
322 return;
323 }
324#endif
325 char value[16];
326 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
327 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", value, name);
328 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
329 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", value, name);
330 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
331 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", value, name);
332 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
333 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", value, name);
334 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
335 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
336 }
337}
338
339void mSDLPlayerChangeJoystick(struct mSDLEvents* events, struct mSDLPlayer* player, size_t index) {
340 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
341 return;
342 }
343 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
344}
345
346void mSDLUpdateJoysticks(struct mSDLEvents* events, const struct Configuration* config) {
347 // Pump SDL joystick events without eating the rest of the events
348 SDL_JoystickUpdate();
349#if SDL_VERSION_ATLEAST(2, 0, 0)
350 SDL_Event event;
351 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
352 if (event.type == SDL_JOYDEVICEADDED) {
353 SDL_Joystick* sdlJoystick = SDL_JoystickOpen(event.jdevice.which);
354 if (!sdlJoystick) {
355 continue;
356 }
357 ssize_t joysticks[MAX_PLAYERS];
358 ssize_t i;
359 // Pointers can get invalidated, so we'll need to refresh them
360 for (i = 0; i < events->playersAttached && i < MAX_PLAYERS; ++i) {
361 joysticks[i] = events->players[i]->joystick ? (ssize_t) SDL_JoystickListIndex(&events->joysticks, events->players[i]->joystick) : -1;
362 events->players[i]->joystick = NULL;
363 }
364 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
365 joystick->joystick = sdlJoystick;
366 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
367 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
368#if SDL_VERSION_ATLEAST(2, 0, 0)
369 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
370#endif
371 for (i = 0; i < events->playersAttached && i < MAX_PLAYERS; ++i) {
372 if (joysticks[i] != -1) {
373 events->players[i]->joystick = SDL_JoystickListGetPointer(&events->joysticks, joysticks[i]);
374 }
375 }
376
377#if SDL_VERSION_ATLEAST(2, 0, 0)
378 char joystickName[34] = {0};
379 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(joystick->joystick), joystickName, sizeof(joystickName));
380#else
381 const char* joystickName = SDL_JoystickName(SDL_JoystickIndex(joystick->joystick));
382 if (joystickName)
383#endif
384 {
385 for (i = 0; (int) i < events->playersAttached; ++i) {
386 if (events->players[i]->joystick) {
387 continue;
388 }
389 if (events->preferredJoysticks[i] && strcmp(events->preferredJoysticks[i], joystickName) == 0) {
390 events->players[i]->joystick = joystick;
391 if (config) {
392 mInputProfileLoad(events->players[i]->bindings, SDL_BINDING_BUTTON, config, joystickName);
393 }
394 return;
395 }
396 }
397 }
398 for (i = 0; (int) i < events->playersAttached; ++i) {
399 if (events->players[i]->joystick) {
400 continue;
401 }
402 events->players[i]->joystick = joystick;
403 if (config
404#if !SDL_VERSION_ATLEAST(2, 0, 0)
405 && joystickName
406#endif
407 ) {
408 mInputProfileLoad(events->players[i]->bindings, SDL_BINDING_BUTTON, config, joystickName);
409 }
410 break;
411 }
412 } else if (event.type == SDL_JOYDEVICEREMOVED) {
413 SDL_JoystickID ids[MAX_PLAYERS] = { 0 };
414 size_t i;
415 for (i = 0; (int) i < events->playersAttached; ++i) {
416 if (events->players[i]->joystick) {
417 ids[i] = events->players[i]->joystick->id;
418 events->players[i]->joystick = 0;
419 } else {
420 ids[i] = -1;
421 }
422 }
423 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
424 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
425 if (joystick->id == event.jdevice.which) {
426 SDL_JoystickListShift(&events->joysticks, i, 1);
427 continue;
428 }
429 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
430 int p;
431 for (p = 0; p < events->playersAttached; ++p) {
432 if (joystick->id == ids[p]) {
433 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
434 }
435 }
436 ++i;
437 }
438 }
439 }
440#endif
441}
442
443static void _pauseAfterFrame(struct mCoreThread* context) {
444 context->frameCallback = 0;
445 mCoreThreadPauseFromThread(context);
446}
447
448static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
449 int key = -1;
450 if (!(event->keysym.mod & ~(KMOD_NUM | KMOD_CAPS))) {
451 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
452 }
453 if (key != -1) {
454 mCoreThreadInterrupt(context);
455 if (event->type == SDL_KEYDOWN) {
456 context->core->addKeys(context->core, 1 << key);
457 } else {
458 context->core->clearKeys(context->core, 1 << key);
459 }
460 mCoreThreadContinue(context);
461 return;
462 }
463 if (event->keysym.sym == SDLK_TAB) {
464 context->impl->sync.audioWait = event->type != SDL_KEYDOWN;
465 return;
466 }
467 if (event->keysym.sym == SDLK_BACKQUOTE) {
468 mCoreThreadSetRewinding(context, event->type == SDL_KEYDOWN);
469 }
470 if (event->type == SDL_KEYDOWN) {
471 switch (event->keysym.sym) {
472#ifdef USE_DEBUGGERS
473 case SDLK_F11:
474 if (context->core->debugger) {
475 mDebuggerEnter(context->core->debugger, DEBUGGER_ENTER_MANUAL, NULL);
476 }
477 return;
478#endif
479#ifdef USE_PNG
480 case SDLK_F12:
481 mCoreTakeScreenshot(context->core);
482 return;
483#endif
484 case SDLK_BACKSLASH:
485 mCoreThreadPause(context);
486 context->frameCallback = _pauseAfterFrame;
487 mCoreThreadUnpause(context);
488 return;
489#ifdef BUILD_PANDORA
490 case SDLK_ESCAPE:
491 mCoreThreadEnd(context);
492 return;
493#endif
494 default:
495 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
496 switch (event->keysym.sym) {
497#if SDL_VERSION_ATLEAST(2, 0, 0)
498 case SDLK_f:
499 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
500 sdlContext->fullscreen = !sdlContext->fullscreen;
501 sdlContext->windowUpdated = 1;
502 break;
503#endif
504 case SDLK_p:
505 mCoreThreadTogglePause(context);
506 break;
507 case SDLK_n:
508 mCoreThreadPause(context);
509 context->frameCallback = _pauseAfterFrame;
510 mCoreThreadUnpause(context);
511 break;
512 case SDLK_r:
513 mCoreThreadReset(context);
514 break;
515 default:
516 break;
517 }
518 }
519 if (event->keysym.mod & KMOD_SHIFT) {
520 switch (event->keysym.sym) {
521 case SDLK_F1:
522 case SDLK_F2:
523 case SDLK_F3:
524 case SDLK_F4:
525 case SDLK_F5:
526 case SDLK_F6:
527 case SDLK_F7:
528 case SDLK_F8:
529 case SDLK_F9:
530 mCoreThreadInterrupt(context);
531 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SAVEDATA | SAVESTATE_SCREENSHOT | SAVESTATE_RTC);
532 mCoreThreadContinue(context);
533 break;
534 default:
535 break;
536 }
537 } else {
538 switch (event->keysym.sym) {
539 case SDLK_F1:
540 case SDLK_F2:
541 case SDLK_F3:
542 case SDLK_F4:
543 case SDLK_F5:
544 case SDLK_F6:
545 case SDLK_F7:
546 case SDLK_F8:
547 case SDLK_F9:
548 mCoreThreadInterrupt(context);
549 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT | SAVESTATE_RTC);
550 mCoreThreadContinue(context);
551 break;
552 default:
553 break;
554 }
555 }
556 return;
557 }
558 }
559}
560
561static void _mSDLHandleJoyButton(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
562 int key = 0;
563 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
564 if (key == -1) {
565 return;
566 }
567
568 mCoreThreadInterrupt(context);
569 if (event->type == SDL_JOYBUTTONDOWN) {
570 context->core->addKeys(context->core, 1 << key);
571 } else {
572 context->core->clearKeys(context->core, 1 << key);
573 }
574 mCoreThreadContinue(context);
575}
576
577static void _mSDLHandleJoyHat(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_JoyHatEvent* event) {
578 int allKeys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, -1);
579 if (allKeys == 0) {
580 return;
581 }
582
583 int keys = mInputMapHat(sdlContext->bindings, SDL_BINDING_BUTTON, event->hat, event->value);
584
585 mCoreThreadInterrupt(context);
586 context->core->clearKeys(context->core, allKeys ^ keys);
587 context->core->addKeys(context->core, keys);
588 mCoreThreadContinue(context);
589}
590
591static void _mSDLHandleJoyAxis(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
592 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
593 int newKeys = 0;
594 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
595 if (key != -1) {
596 newKeys |= 1 << key;
597 }
598 clearKeys &= ~newKeys;
599 mCoreThreadInterrupt(context);
600 context->core->clearKeys(context->core, clearKeys);
601 context->core->addKeys(context->core, newKeys);
602 mCoreThreadContinue(context);
603
604}
605
606#if SDL_VERSION_ATLEAST(2, 0, 0)
607static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
608 switch (event->event) {
609 case SDL_WINDOWEVENT_SIZE_CHANGED:
610 sdlContext->windowUpdated = 1;
611 break;
612 }
613}
614#endif
615
616void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
617 switch (event->type) {
618 case SDL_QUIT:
619 mCoreThreadEnd(context);
620 break;
621#if SDL_VERSION_ATLEAST(2, 0, 0)
622 case SDL_WINDOWEVENT:
623 _mSDLHandleWindowEvent(sdlContext, &event->window);
624 break;
625#else
626 case SDL_VIDEORESIZE:
627 sdlContext->newWidth = event->resize.w;
628 sdlContext->newHeight = event->resize.h;
629 sdlContext->windowUpdated = 1;
630 break;
631#endif
632 case SDL_KEYDOWN:
633 case SDL_KEYUP:
634 _mSDLHandleKeypress(context, sdlContext, &event->key);
635 break;
636 case SDL_JOYBUTTONDOWN:
637 case SDL_JOYBUTTONUP:
638 _mSDLHandleJoyButton(context, sdlContext, &event->jbutton);
639 break;
640 case SDL_JOYHATMOTION:
641 _mSDLHandleJoyHat(context, sdlContext, &event->jhat);
642 break;
643 case SDL_JOYAXISMOTION:
644 _mSDLHandleJoyAxis(context, sdlContext, &event->jaxis);
645 break;
646 }
647}
648
649#if SDL_VERSION_ATLEAST(2, 0, 0)
650static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
651 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
652 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
653 return;
654 }
655 int8_t originalLevel = sdlRumble->level;
656 sdlRumble->level += enable;
657 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
658 int8_t oldLevel;
659 CircleBufferRead8(&sdlRumble->history, &oldLevel);
660 sdlRumble->level -= oldLevel;
661 }
662 CircleBufferWrite8(&sdlRumble->history, enable);
663 if (sdlRumble->level == originalLevel) {
664 return;
665 }
666 float activeLevel = ceil(RUMBLE_STEPS * sdlRumble->level / (float) RUMBLE_PWM) / RUMBLE_STEPS;
667 if (fabsf(sdlRumble->activeLevel - activeLevel) < 0.75 / RUMBLE_STEPS) {
668 return;
669 }
670 sdlRumble->activeLevel = activeLevel;
671 if (sdlRumble->activeLevel > 0.5 / RUMBLE_STEPS) {
672 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
673 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, activeLevel, 500);
674 } else {
675 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
676 }
677}
678#endif
679
680static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
681 if (!player->joystick) {
682 return 0;
683 }
684 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
685}
686
687static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
688 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
689 return _readTilt(rotation->p, rotation->axisX);
690}
691
692static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
693 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
694 return _readTilt(rotation->p, rotation->axisY);
695}
696
697static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
698 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
699 float z = rotation->zDelta;
700 return z * rotation->gyroSensitivity;
701}
702
703static void _mSDLRotationSample(struct mRotationSource* source) {
704 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
705 SDL_JoystickUpdate();
706 if (!rotation->p->joystick) {
707 return;
708 }
709
710 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
711 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
712 union {
713 float f;
714 int32_t i;
715 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
716 if (isnan(theta.f)) {
717 theta.f = 0.0f;
718 } else if (theta.f > M_PI) {
719 theta.f -= 2.0f * M_PI;
720 } else if (theta.f < -M_PI) {
721 theta.f += 2.0f * M_PI;
722 }
723 rotation->oldX = x;
724 rotation->oldY = y;
725
726 float oldZ = 0;
727 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
728 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
729 }
730 CircleBufferWrite32(&rotation->zHistory, theta.i);
731 rotation->zDelta += theta.f - oldZ;
732}
733
734#if SDL_VERSION_ATLEAST(2, 0, 0)
735void mSDLSuspendScreensaver(struct mSDLEvents* events) {
736 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
737 SDL_DisableScreenSaver();
738 }
739 ++events->screensaverSuspendDepth;
740}
741
742void mSDLResumeScreensaver(struct mSDLEvents* events) {
743 --events->screensaverSuspendDepth;
744 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
745 SDL_EnableScreenSaver();
746 }
747}
748
749void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
750 bool wasSuspendable = events->screensaverSuspendable;
751 events->screensaverSuspendable = suspendable;
752 if (events->screensaverSuspendDepth > 0) {
753 if (suspendable && !wasSuspendable) {
754 SDL_DisableScreenSaver();
755 } else if (!suspendable && wasSuspendable) {
756 SDL_EnableScreenSaver();
757 }
758 } else {
759 SDL_EnableScreenSaver();
760 }
761}
762#endif