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