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 }
66
67 context->playersAttached = 0;
68
69 size_t i;
70 for (i = 0; i < MAX_PLAYERS; ++i) {
71 context->preferredJoysticks[i] = 0;
72 }
73
74#if !SDL_VERSION_ATLEAST(2, 0, 0)
75 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
76#else
77 context->screensaverSuspendDepth = 0;
78#endif
79 return true;
80}
81
82void mSDLDeinitEvents(struct mSDLEvents* context) {
83 size_t i;
84 for (i = 0; i < SDL_JoystickListSize(&context->joysticks); ++i) {
85 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&context->joysticks, i);
86#if SDL_VERSION_ATLEAST(2, 0, 0)
87 SDL_HapticClose(joystick->haptic);
88#endif
89 SDL_JoystickClose(joystick->joystick);
90 }
91 SDL_JoystickListDeinit(&context->joysticks);
92 SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
93}
94
95void mSDLEventsLoadConfig(struct mSDLEvents* context, const struct Configuration* config) {
96 context->preferredJoysticks[0] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 0);
97 context->preferredJoysticks[1] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 1);
98 context->preferredJoysticks[2] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 2);
99 context->preferredJoysticks[3] = mInputGetPreferredDevice(config, "gba", SDL_BINDING_BUTTON, 3);
100}
101
102void mSDLInitBindingsGBA(struct mInputMap* inputMap) {
103#ifdef BUILD_PANDORA
104 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_PAGEDOWN, GBA_KEY_A);
105 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_END, GBA_KEY_B);
106 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RSHIFT, GBA_KEY_L);
107 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RCTRL, GBA_KEY_R);
108 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LALT, GBA_KEY_START);
109 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LCTRL, GBA_KEY_SELECT);
110 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
111 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
112 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
113 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
114#elif SDL_VERSION_ATLEAST(2, 0, 0)
115 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_X, GBA_KEY_A);
116 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_Z, GBA_KEY_B);
117 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_A, GBA_KEY_L);
118 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_S, GBA_KEY_R);
119 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RETURN, GBA_KEY_START);
120 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_BACKSPACE, GBA_KEY_SELECT);
121 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_UP, GBA_KEY_UP);
122 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_DOWN, GBA_KEY_DOWN);
123 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_LEFT, GBA_KEY_LEFT);
124 mInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RIGHT, GBA_KEY_RIGHT);
125#else
126 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
127 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
128 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
129 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
130 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
131 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
132 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
133 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
134 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
135 mInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
136#endif
137
138 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 13, GBA_KEY_A);
139 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 14, GBA_KEY_B);
140 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 10, GBA_KEY_L);
141 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 11, GBA_KEY_R);
142 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 3, GBA_KEY_START);
143 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 0, GBA_KEY_SELECT);
144 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 4, GBA_KEY_UP);
145 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 6, GBA_KEY_DOWN);
146 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 7, GBA_KEY_LEFT);
147 mInputBindKey(inputMap, SDL_BINDING_BUTTON, 5, GBA_KEY_RIGHT);
148
149 struct mInputAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
150 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
151 description = (struct mInputAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
152 mInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
153}
154
155bool mSDLAttachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
156 player->joystick = 0;
157
158 if (events->playersAttached >= MAX_PLAYERS) {
159 return false;
160 }
161
162#if SDL_VERSION_ATLEAST(2, 0, 0)
163 player->rumble.d.setRumble = _mSDLSetRumble;
164 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
165 player->rumble.level = 0;
166 player->rumble.p = player;
167#endif
168
169 player->rotation.d.readTiltX = _mSDLReadTiltX;
170 player->rotation.d.readTiltY = _mSDLReadTiltY;
171 player->rotation.d.readGyroZ = _mSDLReadGyroZ;
172 player->rotation.d.sample = _mSDLRotationSample;
173 player->rotation.axisX = 2;
174 player->rotation.axisY = 3;
175 player->rotation.gyroSensitivity = 2.2e9f;
176 player->rotation.gyroX = 0;
177 player->rotation.gyroY = 1;
178 player->rotation.zDelta = 0;
179 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
180 player->rotation.p = player;
181
182 player->playerId = events->playersAttached;
183 events->players[player->playerId] = player;
184 size_t firstUnclaimed = SIZE_MAX;
185 size_t index = SIZE_MAX;
186
187 size_t i;
188 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
189 bool claimed = false;
190
191 int p;
192 for (p = 0; p < events->playersAttached; ++p) {
193 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
194 claimed = true;
195 break;
196 }
197 }
198 if (claimed) {
199 continue;
200 }
201
202 if (firstUnclaimed == SIZE_MAX) {
203 firstUnclaimed = i;
204 }
205
206 const char* joystickName;
207#if SDL_VERSION_ATLEAST(2, 0, 0)
208 joystickName = SDL_JoystickName(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick);
209#else
210 joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
211#endif
212 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
213 index = i;
214 break;
215 }
216 }
217
218 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
219 index = firstUnclaimed;
220 }
221
222 if (index != SIZE_MAX) {
223 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
224
225#if SDL_VERSION_ATLEAST(2, 0, 0)
226 if (player->joystick->haptic) {
227 SDL_HapticRumbleInit(player->joystick->haptic);
228 }
229#endif
230 }
231
232 ++events->playersAttached;
233 return true;
234}
235
236void mSDLDetachPlayer(struct mSDLEvents* events, struct mSDLPlayer* player) {
237 if (player != events->players[player->playerId]) {
238 return;
239 }
240 int i;
241 for (i = player->playerId; i < events->playersAttached; ++i) {
242 if (i + 1 < MAX_PLAYERS) {
243 events->players[i] = events->players[i + 1];
244 }
245 if (i < events->playersAttached - 1) {
246 events->players[i]->playerId = i;
247 }
248 }
249 --events->playersAttached;
250 CircleBufferDeinit(&player->rotation.zHistory);
251}
252
253void mSDLPlayerLoadConfig(struct mSDLPlayer* context, const struct Configuration* config) {
254 mInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
255 if (context->joystick) {
256 mInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
257#if SDL_VERSION_ATLEAST(2, 0, 0)
258 const char* name = SDL_JoystickName(context->joystick->joystick);
259#else
260 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
261#endif
262 mInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
263
264 const char* value;
265 char* end;
266 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
267 int axis;
268 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", name);
269 if (value) {
270 axis = strtol(value, &end, 0);
271 if (axis >= 0 && axis < numAxes && end && !*end) {
272 context->rotation.axisX = axis;
273 }
274 }
275 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", name);
276 if (value) {
277 axis = strtol(value, &end, 0);
278 if (axis >= 0 && axis < numAxes && end && !*end) {
279 context->rotation.axisY = axis;
280 }
281 }
282 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", name);
283 if (value) {
284 axis = strtol(value, &end, 0);
285 if (axis >= 0 && axis < numAxes && end && !*end) {
286 context->rotation.gyroX = axis;
287 }
288 }
289 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", name);
290 if (value) {
291 axis = strtol(value, &end, 0);
292 if (axis >= 0 && axis < numAxes && end && !*end) {
293 context->rotation.gyroY = axis;
294 }
295 }
296 value = mInputGetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", name);
297 if (value) {
298 float sensitivity = strtof_u(value, &end);
299 if (end && !*end) {
300 context->rotation.gyroSensitivity = sensitivity;
301 }
302 }
303 }
304}
305
306void mSDLPlayerSaveConfig(const struct mSDLPlayer* context, struct Configuration* config) {
307 if (context->joystick) {
308#if SDL_VERSION_ATLEAST(2, 0, 0)
309 const char* name = SDL_JoystickName(context->joystick->joystick);
310#else
311 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
312#endif
313 char value[12];
314 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
315 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisX", value, name);
316 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
317 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "tiltAxisY", value, name);
318 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
319 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisX", value, name);
320 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
321 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroAxisY", value, name);
322 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
323 mInputSetCustomValue(config, "gba", SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
324 }
325}
326
327void mSDLPlayerChangeJoystick(struct mSDLEvents* events, struct mSDLPlayer* player, size_t index) {
328 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
329 return;
330 }
331 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
332}
333
334void mSDLUpdateJoysticks(struct mSDLEvents* events) {
335 // Pump SDL joystick events without eating the rest of the events
336 SDL_JoystickUpdate();
337#if SDL_VERSION_ATLEAST(2, 0, 0)
338 SDL_Event event;
339 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
340 if (event.type == SDL_JOYDEVICEADDED) {
341 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
342 joystick->joystick = SDL_JoystickOpen(event.jdevice.which);
343 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
344 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
345#if SDL_VERSION_ATLEAST(2, 0, 0)
346 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
347#endif
348 } else if (event.type == SDL_JOYDEVICEREMOVED) {
349 SDL_JoystickID ids[MAX_PLAYERS];
350 size_t i;
351 for (i = 0; (int) i < events->playersAttached; ++i) {
352 if (events->players[i]->joystick) {
353 ids[i] = events->players[i]->joystick->id;
354 events->players[i]->joystick = 0;
355 } else {
356 ids[i] = -1;
357 }
358 }
359 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
360 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
361 if (joystick->id == event.jdevice.which) {
362 SDL_JoystickListShift(&events->joysticks, i, 1);
363 continue;
364 }
365 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
366 int p;
367 for (p = 0; p < events->playersAttached; ++p) {
368 if (joystick->id == ids[p]) {
369 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
370 }
371 }
372 ++i;
373 }
374 }
375 }
376#endif
377}
378
379static void _pauseAfterFrame(struct mCoreThread* context) {
380 context->frameCallback = 0;
381 mCoreThreadPauseFromThread(context);
382}
383
384static void _mSDLHandleKeypress(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
385 int key = -1;
386 if (!event->keysym.mod) {
387#if !defined(BUILD_PANDORA) && SDL_VERSION_ATLEAST(2, 0, 0)
388 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.scancode);
389#else
390 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
391#endif
392 }
393 if (key != -1) {
394 if (event->type == SDL_KEYDOWN) {
395 context->core->addKeys(context->core, 1 << key);
396 } else {
397 context->core->clearKeys(context->core, 1 << key);
398 }
399 return;
400 }
401 if (event->keysym.sym == SDLK_TAB) {
402 context->sync.audioWait = event->type != SDL_KEYDOWN;
403 return;
404 }
405 if (event->type == SDL_KEYDOWN) {
406 switch (event->keysym.sym) {
407 case SDLK_F11:
408 // TODO: Put back debugger
409 return;
410#ifdef USE_PNG
411 case SDLK_F12:
412 mCoreTakeScreenshot(context->core);
413 return;
414#endif
415 case SDLK_BACKSLASH:
416 mCoreThreadPause(context);
417 context->frameCallback = _pauseAfterFrame;
418 mCoreThreadUnpause(context);
419 return;
420 case SDLK_BACKQUOTE:
421 // TODO: Put back rewind
422 return;
423#ifdef BUILD_PANDORA
424 case SDLK_ESCAPE:
425 mCoreThreadEnd(context);
426 return;
427#endif
428 default:
429 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
430 switch (event->keysym.sym) {
431#if SDL_VERSION_ATLEAST(2, 0, 0)
432 case SDLK_f:
433 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
434 sdlContext->fullscreen = !sdlContext->fullscreen;
435 sdlContext->windowUpdated = 1;
436 break;
437#endif
438 case SDLK_p:
439 mCoreThreadTogglePause(context);
440 break;
441 case SDLK_n:
442 mCoreThreadPause(context);
443 context->frameCallback = _pauseAfterFrame;
444 mCoreThreadUnpause(context);
445 break;
446 case SDLK_r:
447 mCoreThreadReset(context);
448 break;
449 default:
450 break;
451 }
452 }
453 if (event->keysym.mod & KMOD_SHIFT) {
454 switch (event->keysym.sym) {
455 case SDLK_F1:
456 case SDLK_F2:
457 case SDLK_F3:
458 case SDLK_F4:
459 case SDLK_F5:
460 case SDLK_F6:
461 case SDLK_F7:
462 case SDLK_F8:
463 case SDLK_F9:
464 mCoreThreadInterrupt(context);
465 mCoreSaveState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
466 mCoreThreadContinue(context);
467 break;
468 default:
469 break;
470 }
471 } else {
472 switch (event->keysym.sym) {
473 case SDLK_F1:
474 case SDLK_F2:
475 case SDLK_F3:
476 case SDLK_F4:
477 case SDLK_F5:
478 case SDLK_F6:
479 case SDLK_F7:
480 case SDLK_F8:
481 case SDLK_F9:
482 mCoreThreadInterrupt(context);
483 mCoreLoadState(context->core, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
484 mCoreThreadContinue(context);
485 break;
486 default:
487 break;
488 }
489 }
490 return;
491 }
492 }
493}
494
495static void _mSDLHandleJoyButton(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
496 int key = 0;
497 key = mInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
498 if (key == -1) {
499 return;
500 }
501
502 if (event->type == SDL_JOYBUTTONDOWN) {
503 core->addKeys(core, 1 << key);
504 } else {
505 core->clearKeys(core, 1 << key);
506 }
507}
508
509static void _mSDLHandleJoyAxis(struct mCore* core, struct mSDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
510 int clearKeys = ~mInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, -1);
511 int newKeys = 0;
512 int key = mInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
513 if (key != -1) {
514 newKeys |= 1 << key;
515 }
516 clearKeys &= ~newKeys;
517 core->clearKeys(core, clearKeys);
518 core->addKeys(core, newKeys);
519
520}
521
522#if SDL_VERSION_ATLEAST(2, 0, 0)
523static void _mSDLHandleWindowEvent(struct mSDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
524 switch (event->event) {
525 case SDL_WINDOWEVENT_SIZE_CHANGED:
526 sdlContext->windowUpdated = 1;
527 break;
528 }
529}
530#endif
531
532void mSDLHandleEvent(struct mCoreThread* context, struct mSDLPlayer* sdlContext, const union SDL_Event* event) {
533 switch (event->type) {
534 case SDL_QUIT:
535 mCoreThreadEnd(context);
536 break;
537#if SDL_VERSION_ATLEAST(2, 0, 0)
538 case SDL_WINDOWEVENT:
539 _mSDLHandleWindowEvent(sdlContext, &event->window);
540 break;
541#endif
542 case SDL_KEYDOWN:
543 case SDL_KEYUP:
544 _mSDLHandleKeypress(context, sdlContext, &event->key);
545 break;
546 case SDL_JOYBUTTONDOWN:
547 case SDL_JOYBUTTONUP:
548 _mSDLHandleJoyButton(context->core, sdlContext, &event->jbutton);
549 break;
550 case SDL_JOYHATMOTION:
551 // TODO
552 break;
553 case SDL_JOYAXISMOTION:
554 _mSDLHandleJoyAxis(context->core, sdlContext, &event->jaxis);
555 break;
556 }
557}
558
559#if SDL_VERSION_ATLEAST(2, 0, 0)
560static void _mSDLSetRumble(struct mRumble* rumble, int enable) {
561 struct mSDLRumble* sdlRumble = (struct mSDLRumble*) rumble;
562 if (!sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
563 return;
564 }
565 sdlRumble->level += enable;
566 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
567 int8_t oldLevel;
568 CircleBufferRead8(&sdlRumble->history, &oldLevel);
569 sdlRumble->level -= oldLevel;
570 }
571 CircleBufferWrite8(&sdlRumble->history, enable);
572 if (sdlRumble->level) {
573 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, sdlRumble->level / (float) RUMBLE_PWM, 20);
574 } else {
575 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
576 }
577}
578#endif
579
580static int32_t _readTilt(struct mSDLPlayer* player, int axis) {
581 if (!player->joystick) {
582 return 0;
583 }
584 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
585}
586
587static int32_t _mSDLReadTiltX(struct mRotationSource* source) {
588 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
589 return _readTilt(rotation->p, rotation->axisX);
590}
591
592static int32_t _mSDLReadTiltY(struct mRotationSource* source) {
593 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
594 return _readTilt(rotation->p, rotation->axisY);
595}
596
597static int32_t _mSDLReadGyroZ(struct mRotationSource* source) {
598 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
599 float z = rotation->zDelta;
600 return z * rotation->gyroSensitivity;
601}
602
603static void _mSDLRotationSample(struct mRotationSource* source) {
604 struct mSDLRotation* rotation = (struct mSDLRotation*) source;
605 SDL_JoystickUpdate();
606 if (!rotation->p->joystick) {
607 return;
608 }
609
610 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
611 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
612 union {
613 float f;
614 int32_t i;
615 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
616 if (isnan(theta.f)) {
617 theta.f = 0.0f;
618 } else if (theta.f > M_PI) {
619 theta.f -= 2.0f * M_PI;
620 } else if (theta.f < -M_PI) {
621 theta.f += 2.0f * M_PI;
622 }
623 rotation->oldX = x;
624 rotation->oldY = y;
625
626 float oldZ = 0;
627 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
628 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
629 }
630 CircleBufferWrite32(&rotation->zHistory, theta.i);
631 rotation->zDelta += theta.f - oldZ;
632}
633
634#if SDL_VERSION_ATLEAST(2, 0, 0)
635void mSDLSuspendScreensaver(struct mSDLEvents* events) {
636 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
637 SDL_DisableScreenSaver();
638 }
639 ++events->screensaverSuspendDepth;
640}
641
642void mSDLResumeScreensaver(struct mSDLEvents* events) {
643 --events->screensaverSuspendDepth;
644 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
645 SDL_EnableScreenSaver();
646 }
647}
648
649void mSDLSetScreensaverSuspendable(struct mSDLEvents* events, bool suspendable) {
650 bool wasSuspendable = events->screensaverSuspendable;
651 events->screensaverSuspendable = suspendable;
652 if (events->screensaverSuspendDepth > 0) {
653 if (suspendable && !wasSuspendable) {
654 SDL_DisableScreenSaver();
655 } else if (!suspendable && wasSuspendable) {
656 SDL_EnableScreenSaver();
657 }
658 } else {
659 SDL_EnableScreenSaver();
660 }
661}
662#endif