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