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#elif SDL_VERSION_ATLEAST(2, 0, 0)
131 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_X, GBA_KEY_A);
132 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_Z, GBA_KEY_B);
133 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_A, GBA_KEY_L);
134 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_S, GBA_KEY_R);
135 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RETURN, GBA_KEY_START);
136 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_BACKSPACE, GBA_KEY_SELECT);
137 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_UP, GBA_KEY_UP);
138 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_DOWN, GBA_KEY_DOWN);
139 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_LEFT, GBA_KEY_LEFT);
140 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RIGHT, GBA_KEY_RIGHT);
141#else
142 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
143 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
144 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
145 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
146 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
147 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
148 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
149 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
150 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
151 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
152#endif
153
154 struct mInputAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
155 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
156 description = (struct mInputAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
157 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
158}
159
160bool mSDLAttachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
161 player->joystick = 0;
162
163 if (events->playersAttached >= MAX_PLAYERS) {
164 return false;
165 }
166
167#if SDL_VERSION_ATLEAST(2, 0, 0)
168 player->rumble.d.setRumble = _mSDLSetRumble;
169 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
170 player->rumble.level = 0;
171 player->rumble.activeLevel = 0;
172 player->rumble.p = player;
173#endif
174
175 player->rotation.d.readTiltX = _mSDLReadTiltX;
176 player->rotation.d.readTiltY = _mSDLReadTiltY;
177 player->rotation.d.readGyroZ = _mSDLReadGyroZ;
178 player->rotation.d.sample = _mSDLRotationSample;
179 player->rotation.axisX = 2;
180 player->rotation.axisY = 3;
181 player->rotation.gyroSensitivity = 2.2e9f;
182 player->rotation.gyroX = 0;
183 player->rotation.gyroY = 1;
184 player->rotation.zDelta = 0;
185 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
186 player->rotation.p = player;
187
188 player->playerId = events->playersAttached;
189 events->players[player->playerId] = player;
190 size_t firstUnclaimed = SIZE_MAX;
191 size_t index = SIZE_MAX;
192
193 size_t i;
194 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
195 bool claimed = false;
196
197 int p;
198 for (p = 0; p < events->playersAttached; ++p) {
199 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
200 claimed = true;
201 break;
202 }
203 }
204 if (claimed) {
205 continue;
206 }
207
208 if (firstUnclaimed == SIZE_MAX) {
209 firstUnclaimed = i;
210 }
211
212 const char* joystickName;
213#if SDL_VERSION_ATLEAST(2, 0, 0)
214 joystickName = SDL_JoystickName(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick);
215#else
216 joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
217#endif
218 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
219 index = i;
220 break;
221 }
222 }
223
224 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
225 index = firstUnclaimed;
226 }
227
228 if (index != SIZE_MAX) {
229 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
230
231#if SDL_VERSION_ATLEAST(2, 0, 0)
232 if (player->joystick->haptic) {
233 SDL_HapticRumbleInit(player->joystick->haptic);
234 }
235#endif
236 }
237
238 ++events->playersAttached;
239 return true;
240}
241
242void mSDLDetachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
243 if (player != events->players[player->playerId]) {
244 return;
245 }
246 int i;
247 for (i = player->playerId; i < events->playersAttached; ++i) {
248 if (i + 1 < MAX_PLAYERS) {
249 events->players[i] = events->players[i + 1];
250 }
251 if (i < events->playersAttached - 1) {
252 events->players[i]->playerId = i;
253 }
254 }
255 --events->playersAttached;
256 CircleBufferDeinit(&player->rotation.zHistory);
257}
258
259void mSDLPlayerLoadConfig(struct mSDLPlayer* context, const struct Configuration* config) {
260 mInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
261 if (context->joystick) {
262 mInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
263#if SDL_VERSION_ATLEAST(2, 0, 0)
264 const char* name = SDL_JoystickName(context->joystick->joystick);
265#else
266 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
267#endif
268 mInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
269
270 const char* value;
271 char* end;
272 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
273 int axis;
274 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", name);
275 if (value) {
276 axis = strtol(value, &end, 0);
277 if (axis >= 0 && axis < numAxes && end && !*end) {
278 context->rotation.axisX = axis;
279 }
280 }
281 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", name);
282 if (value) {
283 axis = strtol(value, &end, 0);
284 if (axis >= 0 && axis < numAxes && end && !*end) {
285 context->rotation.axisY = axis;
286 }
287 }
288 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", name);
289 if (value) {
290 axis = strtol(value, &end, 0);
291 if (axis >= 0 && axis < numAxes && end && !*end) {
292 context->rotation.gyroX = axis;
293 }
294 }
295 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", name);
296 if (value) {
297 axis = strtol(value, &end, 0);
298 if (axis >= 0 && axis < numAxes && end && !*end) {
299 context->rotation.gyroY = axis;
300 }
301 }
302 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", name);
303 if (value) {
304 float sensitivity = strtof_u(value, &end);
305 if (end && !*end) {
306 context->rotation.gyroSensitivity = sensitivity;
307 }
308 }
309 }
310}
311
312void mSDLPlayerSaveConfig(const struct mSDLPlayer* context, struct Configuration* config) {
313 if (context->joystick) {
314#if SDL_VERSION_ATLEAST(2, 0, 0)
315 const char* name = SDL_JoystickName(context->joystick->joystick);
316#else
317 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
318#endif
319 char value[12];
320 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
321 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", value, name);
322 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
323 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", value, name);
324 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
325 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", value, name);
326 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
327 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", value, name);
328 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
329 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
330 }
331}
332
333void mSDLPlayerChangeJoystick(struct mSDLEvents* events, struct mSDLPlayer* player, size_t index) {
334 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
335 return;
336 }
337 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
338}
339
340void mSDLUpdateJoysticks(struct mSDLEvents* events) {
341 // Pump SDL joystick events without eating the rest of the events
342 SDL_JoystickUpdate();
343#if SDL_VERSION_ATLEAST(2, 0, 0)
344 SDL_Event event;
345 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
346 if (event.type == SDL_JOYDEVICEADDED) {
347 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
348 joystick->joystick = SDL_JoystickOpen(event.jdevice.which);
349 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
350 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
351#if SDL_VERSION_ATLEAST(2, 0, 0)
352 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
353#endif
354 } else if (event.type == SDL_JOYDEVICEREMOVED) {
355 SDL_JoystickID ids[MAX_PLAYERS];
356 size_t i;
357 for (i = 0; (int) i < events->playersAttached; ++i) {
358 if (events->players[i]->joystick) {
359 ids[i] = events->players[i]->joystick->id;
360 events->players[i]->joystick = 0;
361 } else {
362 ids[i] = -1;
363 }
364 }
365 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
366 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
367 if (joystick->id == event.jdevice.which) {
368 SDL_JoystickListShift(&events->joysticks, i, 1);
369 continue;
370 }
371 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
372 int p;
373 for (p = 0; p < events->playersAttached; ++p) {
374 if (joystick->id == ids[p]) {
375 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
376 }
377 }
378 ++i;
379 }
380 }
381 }
382#endif
383}
384
385static void _pauseAfterFrame(struct mCoreThread* context) {
386 context->frameCallback = 0;
387 mCoreThreadPauseFromThread(context);
388}
389
390static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
391 int key = -1;
392 if (!event->keysym.mod) {
393#if !defined(BUILD_PANDORA) && SDL_VERSION_ATLEAST(2, 0, 0)
394 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.scancode);
395#else
396 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
397#endif
398 }
399 if (key != -1) {
400 if (event->type == SDL_KEYDOWN) {
401 context->core->addKeys(context->core, 1 << key);
402 } else {
403 context->core->clearKeys(context->core, 1 << key);
404 }
405 return;
406 }
407 if (event->keysym.sym == SDLK_TAB) {
408 context->sync.audioWait = event->type != SDL_KEYDOWN;
409 return;
410 }
411 if (event->keysym.sym == SDLK_BACKQUOTE) {
412 mCoreThreadSetRewinding(context, event->type == SDL_KEYDOWN);
413 }
414 if (event->type == SDL_KEYDOWN) {
415 switch (event->keysym.sym) {
416 case SDLK_F11:
417 if (context->core->debugger) {
418 mDebuggerEnter(context->core->debugger, DEBUGGER_ENTER_MANUAL, NULL);
419 }
420 return;
421#ifdef USE_PNG
422 case SDLK_F12:
423 mCoreTakeScreenshot(context->core);
424 return;
425#endif
426 case SDLK_BACKSLASH:
427 mCoreThreadPause(context);
428 context->frameCallback = _pauseAfterFrame;
429 mCoreThreadUnpause(context);
430 return;
431#ifdef BUILD_PANDORA
432 case SDLK_ESCAPE:
433 mCoreThreadEnd(context);
434 return;
435#endif
436 default:
437 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
438 switch (event->keysym.sym) {
439#if SDL_VERSION_ATLEAST(2, 0, 0)
440 case SDLK_f:
441 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
442 sdlContext->fullscreen = !sdlContext->fullscreen;
443 sdlContext->windowUpdated = 1;
444 break;
445#endif
446 case SDLK_p:
447 mCoreThreadTogglePause(context);
448 break;
449 case SDLK_n:
450 mCoreThreadPause(context);
451 context->frameCallback = _pauseAfterFrame;
452 mCoreThreadUnpause(context);
453 break;
454 case SDLK_r:
455 mCoreThreadReset(context);
456 break;
457 default:
458 break;
459 }
460 }
461 if (event->keysym.mod & KMOD_SHIFT) {
462 switch (event->keysym.sym) {
463 case SDLK_F1:
464 case SDLK_F2:
465 case SDLK_F3:
466 case SDLK_F4:
467 case SDLK_F5:
468 case SDLK_F6:
469 case SDLK_F7:
470 case SDLK_F8:
471 case SDLK_F9:
472 mCoreThreadInterrupt(context);
473 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SAVEDATA | SAVESTATE_SCREENSHOT);
474 mCoreThreadContinue(context);
475 break;
476 default:
477 break;
478 }
479 } else {
480 switch (event->keysym.sym) {
481 case SDLK_F1:
482 case SDLK_F2:
483 case SDLK_F3:
484 case SDLK_F4:
485 case SDLK_F5:
486 case SDLK_F6:
487 case SDLK_F7:
488 case SDLK_F8:
489 case SDLK_F9:
490 mCoreThreadInterrupt(context);
491 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
492 mCoreThreadContinue(context);
493 break;
494 default:
495 break;
496 }
497 }
498 return;
499 }
500 }
501}
502
503static void _mSDLHandleJoyButton(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
504 int key = 0;
505 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
506 if (key == -1) {
507 return;
508 }
509
510 if (event->type == SDL_JOYBUTTONDOWN) {
511 core->addKeys(core, 1 << key);
512 } else {
513 core->clearKeys(core, 1 << key);
514 }
515}
516
517static void _mSDLHandleJoyAxis(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
518 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
519 int newKeys = 0;
520 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
521 if (key != -1) {
522 newKeys |= 1 << key;
523 }
524 clearKeys &= ~newKeys;
525 core->clearKeys(core, clearKeys);
526 core->addKeys(core, newKeys);
527
528}
529
530#if SDL_VERSION_ATLEAST(2, 0, 0)
531static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
532 switch (event->event) {
533 case SDL_WINDOWEVENT_SIZE_CHANGED:
534 sdlContext->windowUpdated = 1;
535 break;
536 }
537}
538#endif
539
540void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
541 switch (event->type) {
542 case SDL_QUIT:
543 mCoreThreadEnd(context);
544 break;
545#if SDL_VERSION_ATLEAST(2, 0, 0)
546 case SDL_WINDOWEVENT:
547 _mSDLHandleWindowEvent(sdlContext, &event->window);
548 break;
549#endif
550 case SDL_KEYDOWN:
551 case SDL_KEYUP:
552 _mSDLHandleKeypress(context, sdlContext, &event->key);
553 break;
554 case SDL_JOYBUTTONDOWN:
555 case SDL_JOYBUTTONUP:
556 _mSDLHandleJoyButton(context->core, sdlContext, &event->jbutton);
557 break;
558 case SDL_JOYHATMOTION:
559 // TODO
560 break;
561 case SDL_JOYAXISMOTION:
562 _mSDLHandleJoyAxis(context->core, sdlContext, &event->jaxis);
563 break;
564 }
565}
566
567#if SDL_VERSION_ATLEAST(2, 0, 0)
568static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
569 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
570 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
571 return;
572 }
573 int8_t originalLevel = sdlRumble->level;
574 sdlRumble->level += enable;
575 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
576 int8_t oldLevel;
577 CircleBufferRead8(&sdlRumble->history, &oldLevel);
578 sdlRumble->level -= oldLevel;
579 }
580 CircleBufferWrite8(&sdlRumble->history, enable);
581 if (sdlRumble->level == originalLevel) {
582 return;
583 }
584 float activeLevel = ceil(RUMBLE_STEPS * sdlRumble->level / (float) RUMBLE_PWM) / RUMBLE_STEPS;
585 if (fabsf(sdlRumble->activeLevel - activeLevel) < 0.75 / RUMBLE_STEPS) {
586 return;
587 }
588 sdlRumble->activeLevel = activeLevel;
589 if (sdlRumble->activeLevel > 0.5 / RUMBLE_STEPS) {
590 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
591 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, activeLevel, 500);
592 } else {
593 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
594 }
595}
596#endif
597
598static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
599 if (!player->joystick) {
600 return 0;
601 }
602 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
603}
604
605static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
606 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
607 return _readTilt(rotation->p, rotation->axisX);
608}
609
610static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
611 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
612 return _readTilt(rotation->p, rotation->axisY);
613}
614
615static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
616 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
617 float z = rotation->zDelta;
618 return z * rotation->gyroSensitivity;
619}
620
621static void _mSDLRotationSample(struct mRotationSource* source) {
622 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
623 SDL_JoystickUpdate();
624 if (!rotation->p->joystick) {
625 return;
626 }
627
628 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
629 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
630 union {
631 float f;
632 int32_t i;
633 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
634 if (isnan(theta.f)) {
635 theta.f = 0.0f;
636 } else if (theta.f > M_PI) {
637 theta.f -= 2.0f * M_PI;
638 } else if (theta.f < -M_PI) {
639 theta.f += 2.0f * M_PI;
640 }
641 rotation->oldX = x;
642 rotation->oldY = y;
643
644 float oldZ = 0;
645 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
646 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
647 }
648 CircleBufferWrite32(&rotation->zHistory, theta.i);
649 rotation->zDelta += theta.f - oldZ;
650}
651
652#if SDL_VERSION_ATLEAST(2, 0, 0)
653void mSDLSuspendScreensaver(struct mSDLEvents* events) {
654 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
655 SDL_DisableScreenSaver();
656 }
657 ++events->screensaverSuspendDepth;
658}
659
660void mSDLResumeScreensaver(struct mSDLEvents* events) {
661 --events->screensaverSuspendDepth;
662 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
663 SDL_EnableScreenSaver();
664 }
665}
666
667void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
668 bool wasSuspendable = events->screensaverSuspendable;
669 events->screensaverSuspendable = suspendable;
670 if (events->screensaverSuspendDepth > 0) {
671 if (suspendable && !wasSuspendable) {
672 SDL_DisableScreenSaver();
673 } else if (!suspendable && wasSuspendable) {
674 SDL_EnableScreenSaver();
675 }
676 } else {
677 SDL_EnableScreenSaver();
678 }
679}
680#endif