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 "debugger/debugger.h"
9#include "gba/io.h"
10#include "gba/supervisor/rr.h"
11#include "gba/serialize.h"
12#include "gba/video.h"
13#include "gba/renderers/video-software.h"
14#include "util/configuration.h"
15#include "util/formatting.h"
16#include "util/vfs.h"
17
18#if SDL_VERSION_ATLEAST(2, 0, 0) && defined(__APPLE__)
19#define GUI_MOD KMOD_GUI
20#else
21#define GUI_MOD KMOD_CTRL
22#endif
23
24#define GYRO_STEPS 100
25
26static void _GBASDLSetRumble(struct GBARumble* rumble, int enable);
27static int32_t _GBASDLReadTiltX(struct GBARotationSource* rumble);
28static int32_t _GBASDLReadTiltY(struct GBARotationSource* rumble);
29static int32_t _GBASDLReadGyroZ(struct GBARotationSource* rumble);
30static void _GBASDLRotationSample(struct GBARotationSource* source);
31
32bool GBASDLInitEvents(struct GBASDLEvents* context) {
33 int subsystem = SDL_INIT_JOYSTICK;
34#if SDL_VERSION_ATLEAST(2, 0, 0)
35 subsystem |= SDL_INIT_HAPTIC | SDL_INIT_VIDEO;
36#endif
37 if (SDL_InitSubSystem(subsystem) < 0) {
38 return false;
39 }
40
41 SDL_JoystickEventState(SDL_ENABLE);
42 int nJoysticks = SDL_NumJoysticks();
43 if (nJoysticks > 0) {
44 context->nJoysticks = nJoysticks;
45 context->joysticks = calloc(context->nJoysticks, sizeof(SDL_Joystick*));
46#if SDL_VERSION_ATLEAST(2, 0, 0)
47 context->haptic = calloc(context->nJoysticks, sizeof(SDL_Haptic*));
48#endif
49 size_t i;
50 for (i = 0; i < context->nJoysticks; ++i) {
51 context->joysticks[i] = SDL_JoystickOpen(i);
52#if SDL_VERSION_ATLEAST(2, 0, 0)
53 context->haptic[i] = SDL_HapticOpenFromJoystick(context->joysticks[i]);
54#endif
55 }
56 } else {
57 context->nJoysticks = 0;
58 context->joysticks = 0;
59 }
60
61 context->playersAttached = 0;
62
63 size_t i;
64 for (i = 0; i < MAX_PLAYERS; ++i) {
65 context->preferredJoysticks[i] = 0;
66 context->joysticksClaimed[i] = SIZE_MAX;
67 }
68
69#if !SDL_VERSION_ATLEAST(2, 0, 0)
70 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
71#else
72 context->screensaverSuspendDepth = 0;
73#endif
74 return true;
75}
76
77void GBASDLDeinitEvents(struct GBASDLEvents* context) {
78 size_t i;
79 for (i = 0; i < context->nJoysticks; ++i) {
80#if SDL_VERSION_ATLEAST(2, 0, 0)
81 SDL_HapticClose(context->haptic[i]);
82#endif
83 SDL_JoystickClose(context->joysticks[i]);
84 }
85
86 SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
87}
88
89void GBASDLEventsLoadConfig(struct GBASDLEvents* context, const struct Configuration* config) {
90 context->preferredJoysticks[0] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 0);
91 context->preferredJoysticks[1] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 1);
92 context->preferredJoysticks[2] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 2);
93 context->preferredJoysticks[3] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 3);
94}
95
96void GBASDLInitBindings(struct GBAInputMap* inputMap) {
97#ifdef BUILD_PANDORA
98 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_PAGEDOWN, GBA_KEY_A);
99 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_END, GBA_KEY_B);
100 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RSHIFT, GBA_KEY_L);
101 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RCTRL, GBA_KEY_R);
102 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LALT, GBA_KEY_START);
103 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LCTRL, GBA_KEY_SELECT);
104 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
105 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
106 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
107 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
108#elif SDL_VERSION_ATLEAST(2, 0, 0)
109 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_X, GBA_KEY_A);
110 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_Z, GBA_KEY_B);
111 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_A, GBA_KEY_L);
112 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_S, GBA_KEY_R);
113 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RETURN, GBA_KEY_START);
114 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_BACKSPACE, GBA_KEY_SELECT);
115 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_UP, GBA_KEY_UP);
116 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_DOWN, GBA_KEY_DOWN);
117 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_LEFT, GBA_KEY_LEFT);
118 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RIGHT, GBA_KEY_RIGHT);
119#else
120 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
121 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
122 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
123 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
124 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
125 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
126 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
127 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
128 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
129 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
130#endif
131
132 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 13, GBA_KEY_A);
133 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 14, GBA_KEY_B);
134 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 10, GBA_KEY_L);
135 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 11, GBA_KEY_R);
136 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 3, GBA_KEY_START);
137 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 0, GBA_KEY_SELECT);
138 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 4, GBA_KEY_UP);
139 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 6, GBA_KEY_DOWN);
140 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 7, GBA_KEY_LEFT);
141 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 5, GBA_KEY_RIGHT);
142
143 struct GBAAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
144 GBAInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
145 description = (struct GBAAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
146 GBAInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
147}
148
149bool GBASDLAttachPlayer(struct GBASDLEvents* events, struct GBASDLPlayer* player) {
150 player->joystick = 0;
151 player->joystickIndex = SIZE_MAX;
152
153#if SDL_VERSION_ATLEAST(2, 0, 0)
154 player->rumble.d.setRumble = _GBASDLSetRumble;
155 player->rumble.p = player;
156#endif
157
158 player->rotation.d.readTiltX = _GBASDLReadTiltX;
159 player->rotation.d.readTiltY = _GBASDLReadTiltY;
160 player->rotation.d.readGyroZ = _GBASDLReadGyroZ;
161 player->rotation.d.sample = _GBASDLRotationSample;
162 player->rotation.axisX = 2;
163 player->rotation.axisY = 3;
164 player->rotation.gyroSensitivity = 2.2e9f;
165 player->rotation.gyroX = 0;
166 player->rotation.gyroY = 1;
167 player->rotation.zDelta = 0;
168 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
169 player->rotation.p = player;
170
171 if (events->playersAttached >= MAX_PLAYERS) {
172 return false;
173 }
174
175 player->playerId = events->playersAttached;
176 size_t firstUnclaimed = SIZE_MAX;
177
178 size_t i;
179 for (i = 0; i < events->nJoysticks; ++i) {
180 bool claimed = false;
181
182 int p;
183 for (p = 0; p < events->playersAttached; ++p) {
184 if (events->joysticksClaimed[p] == i) {
185 claimed = true;
186 break;
187 }
188 }
189 if (claimed) {
190 continue;
191 }
192
193 if (firstUnclaimed == SIZE_MAX) {
194 firstUnclaimed = i;
195 }
196
197 const char* joystickName;
198#if SDL_VERSION_ATLEAST(2, 0, 0)
199 joystickName = SDL_JoystickName(events->joysticks[i]);
200#else
201 joystickName = SDL_JoystickName(SDL_JoystickIndex(events->joysticks[i]));
202#endif
203 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
204 player->joystickIndex = i;
205 break;
206 }
207 }
208
209 if (player->joystickIndex == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
210 player->joystickIndex = firstUnclaimed;
211 }
212
213 if (player->joystickIndex != SIZE_MAX) {
214 player->joystick = events->joysticks[player->joystickIndex];
215 events->joysticksClaimed[player->playerId] = player->joystickIndex;
216
217#if SDL_VERSION_ATLEAST(2, 0, 0)
218 player->haptic = events->haptic[player->joystickIndex];
219 if (player->haptic) {
220 SDL_HapticRumbleInit(player->haptic);
221 }
222#endif
223 }
224
225 ++events->playersAttached;
226 return true;
227}
228
229void GBASDLDetachPlayer(struct GBASDLEvents* events, struct GBASDLPlayer* player) {
230 events->joysticksClaimed[player->playerId] = SIZE_MAX;
231 CircleBufferDeinit(&player->rotation.zHistory);
232}
233
234void GBASDLPlayerLoadConfig(struct GBASDLPlayer* context, const struct Configuration* config) {
235 GBAInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
236 if (context->joystick) {
237 GBAInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
238#if SDL_VERSION_ATLEAST(2, 0, 0)
239 const char* name = SDL_JoystickName(context->joystick);
240#else
241 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick));
242#endif
243 GBAInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
244
245 const char* value;
246 char* end;
247 int numAxes = SDL_JoystickNumAxes(context->joystick);
248 int axis;
249 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisX", name);
250 if (value) {
251 axis = strtol(value, &end, 0);
252 if (axis >= 0 && axis < numAxes && end && !*end) {
253 context->rotation.axisX = axis;
254 }
255 }
256 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisY", name);
257 if (value) {
258 axis = strtol(value, &end, 0);
259 if (axis >= 0 && axis < numAxes && end && !*end) {
260 context->rotation.axisY = axis;
261 }
262 }
263 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisX", name);
264 if (value) {
265 axis = strtol(value, &end, 0);
266 if (axis >= 0 && axis < numAxes && end && !*end) {
267 context->rotation.gyroX = axis;
268 }
269 }
270 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisY", name);
271 if (value) {
272 axis = strtol(value, &end, 0);
273 if (axis >= 0 && axis < numAxes && end && !*end) {
274 context->rotation.gyroY = axis;
275 }
276 }
277 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroSensitivity", name);
278 if (value) {
279 float sensitivity = strtof_u(value, &end);
280 if (end && !*end) {
281 context->rotation.gyroSensitivity = sensitivity;
282 }
283 }
284 }
285}
286
287void GBASDLPlayerSaveConfig(const struct GBASDLPlayer* context, struct Configuration* config) {
288 if (context->joystick) {
289#if SDL_VERSION_ATLEAST(2, 0, 0)
290 const char* name = SDL_JoystickName(context->joystick);
291#else
292 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick));
293#endif
294 char value[12];
295 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
296 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisX", value, name);
297 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
298 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisY", value, name);
299 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
300 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisX", value, name);
301 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
302 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisY", value, name);
303 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
304 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
305 }
306}
307
308void GBASDLPlayerChangeJoystick(struct GBASDLEvents* events, struct GBASDLPlayer* player, size_t index) {
309 if (player->playerId >= MAX_PLAYERS || index >= events->nJoysticks) {
310 return;
311 }
312 events->joysticksClaimed[player->playerId] = index;
313 player->joystickIndex = index;
314 player->joystick = events->joysticks[index];
315#if SDL_VERSION_ATLEAST(2, 0, 0)
316 player->haptic = events->haptic[index];
317#endif
318}
319
320static void _pauseAfterFrame(struct GBAThread* context) {
321 context->frameCallback = 0;
322 GBAThreadPauseFromThread(context);
323}
324
325static void _GBASDLHandleKeypress(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
326 enum GBAKey key = GBA_KEY_NONE;
327 if (!event->keysym.mod) {
328#if !defined(BUILD_PANDORA) && SDL_VERSION_ATLEAST(2, 0, 0)
329 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.scancode);
330#else
331 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
332#endif
333 }
334 if (key != GBA_KEY_NONE) {
335 if (event->type == SDL_KEYDOWN) {
336 context->activeKeys |= 1 << key;
337 } else {
338 context->activeKeys &= ~(1 << key);
339 }
340 return;
341 }
342 if (event->keysym.sym == SDLK_TAB) {
343 context->sync.audioWait = event->type != SDL_KEYDOWN;
344 return;
345 }
346 if (event->type == SDL_KEYDOWN) {
347 switch (event->keysym.sym) {
348 case SDLK_F11:
349 if (context->debugger) {
350 ARMDebuggerEnter(context->debugger, DEBUGGER_ENTER_MANUAL, 0);
351 }
352 return;
353#ifdef USE_PNG
354 case SDLK_F12:
355 GBAThreadInterrupt(context);
356 GBAThreadTakeScreenshot(context);
357 GBAThreadContinue(context);
358 return;
359#endif
360 case SDLK_BACKSLASH:
361 GBAThreadPause(context);
362 context->frameCallback = _pauseAfterFrame;
363 GBAThreadUnpause(context);
364 return;
365 case SDLK_BACKQUOTE:
366 GBAThreadInterrupt(context);
367 GBARewind(context, 10);
368 GBAThreadContinue(context);
369 return;
370#ifdef BUILD_PANDORA
371 case SDLK_ESCAPE:
372 GBAThreadEnd(context);
373 return;
374#endif
375 default:
376 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
377 switch (event->keysym.sym) {
378#if SDL_VERSION_ATLEAST(2, 0, 0)
379 case SDLK_f:
380 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
381 sdlContext->fullscreen = !sdlContext->fullscreen;
382 sdlContext->windowUpdated = 1;
383 break;
384#endif
385 case SDLK_p:
386 GBAThreadTogglePause(context);
387 break;
388 case SDLK_n:
389 GBAThreadPause(context);
390 context->frameCallback = _pauseAfterFrame;
391 GBAThreadUnpause(context);
392 break;
393 case SDLK_r:
394 GBAThreadReset(context);
395 break;
396 default:
397 break;
398 }
399 }
400 if (event->keysym.mod & KMOD_SHIFT) {
401 switch (event->keysym.sym) {
402 case SDLK_F1:
403 case SDLK_F2:
404 case SDLK_F3:
405 case SDLK_F4:
406 case SDLK_F5:
407 case SDLK_F6:
408 case SDLK_F7:
409 case SDLK_F8:
410 case SDLK_F9:
411 GBAThreadInterrupt(context);
412 GBASaveState(context, context->stateDir, event->keysym.sym - SDLK_F1 + 1, true);
413 GBAThreadContinue(context);
414 break;
415 default:
416 break;
417 }
418 } else {
419 switch (event->keysym.sym) {
420 case SDLK_F1:
421 case SDLK_F2:
422 case SDLK_F3:
423 case SDLK_F4:
424 case SDLK_F5:
425 case SDLK_F6:
426 case SDLK_F7:
427 case SDLK_F8:
428 case SDLK_F9:
429 GBAThreadInterrupt(context);
430 GBALoadState(context, context->stateDir, event->keysym.sym - SDLK_F1 + 1);
431 GBAThreadContinue(context);
432 break;
433 default:
434 break;
435 }
436 }
437 return;
438 }
439 }
440}
441
442static void _GBASDLHandleJoyButton(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
443 enum GBAKey key = 0;
444 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
445 if (key == GBA_KEY_NONE) {
446 return;
447 }
448
449 if (event->type == SDL_JOYBUTTONDOWN) {
450 context->activeKeys |= 1 << key;
451 } else {
452 context->activeKeys &= ~(1 << key);
453 }
454}
455
456static void _GBASDLHandleJoyHat(struct GBAThread* context, const struct SDL_JoyHatEvent* event) {
457 enum GBAKey key = 0;
458
459 if (event->value & SDL_HAT_UP) {
460 key |= 1 << GBA_KEY_UP;
461 }
462 if (event->value & SDL_HAT_LEFT) {
463 key |= 1 << GBA_KEY_LEFT;
464 }
465 if (event->value & SDL_HAT_DOWN) {
466 key |= 1 << GBA_KEY_DOWN;
467 }
468 if (event->value & SDL_HAT_RIGHT) {
469 key |= 1 << GBA_KEY_RIGHT;
470 }
471
472 context->activeKeys &= ~((1 << GBA_KEY_UP) | (1 << GBA_KEY_LEFT) | (1 << GBA_KEY_DOWN) | (1 << GBA_KEY_RIGHT));
473 context->activeKeys |= key;
474}
475
476static void _GBASDLHandleJoyAxis(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
477 int keys = context->activeKeys;
478
479 keys = GBAInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, keys);
480 enum GBAKey key = GBAInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
481 if (key != GBA_KEY_NONE) {
482 keys |= 1 << key;
483 }
484
485 context->activeKeys = keys;
486}
487
488#if SDL_VERSION_ATLEAST(2, 0, 0)
489static void _GBASDLHandleWindowEvent(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
490 UNUSED(context);
491 switch (event->event) {
492 case SDL_WINDOWEVENT_SIZE_CHANGED:
493 sdlContext->windowUpdated = 1;
494 break;
495 }
496}
497#endif
498
499void GBASDLHandleEvent(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const union SDL_Event* event) {
500 switch (event->type) {
501 case SDL_QUIT:
502 GBAThreadEnd(context);
503 break;
504#if SDL_VERSION_ATLEAST(2, 0, 0)
505 case SDL_WINDOWEVENT:
506 _GBASDLHandleWindowEvent(context, sdlContext, &event->window);
507 break;
508#endif
509 case SDL_KEYDOWN:
510 case SDL_KEYUP:
511 _GBASDLHandleKeypress(context, sdlContext, &event->key);
512 break;
513 case SDL_JOYBUTTONDOWN:
514 case SDL_JOYBUTTONUP:
515 _GBASDLHandleJoyButton(context, sdlContext, &event->jbutton);
516 break;
517 case SDL_JOYHATMOTION:
518 _GBASDLHandleJoyHat(context, &event->jhat);
519 break;
520 case SDL_JOYAXISMOTION:
521 _GBASDLHandleJoyAxis(context, sdlContext, &event->jaxis);
522 break;
523 }
524}
525
526#if SDL_VERSION_ATLEAST(2, 0, 0)
527static void _GBASDLSetRumble(struct GBARumble* rumble, int enable) {
528 struct GBASDLRumble* sdlRumble = (struct GBASDLRumble*) rumble;
529 if (!sdlRumble->p->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->haptic)) {
530 return;
531 }
532 if (enable) {
533 SDL_HapticRumblePlay(sdlRumble->p->haptic, 1.0f, 20);
534 } else {
535 SDL_HapticRumbleStop(sdlRumble->p->haptic);
536 }
537}
538#endif
539
540static int32_t _readTilt(struct GBASDLPlayer* player, int axis) {
541 return SDL_JoystickGetAxis(player->joystick, axis) * 0x3800;
542}
543
544static int32_t _GBASDLReadTiltX(struct GBARotationSource* source) {
545 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
546 return _readTilt(rotation->p, rotation->axisX);
547}
548
549static int32_t _GBASDLReadTiltY(struct GBARotationSource* source) {
550 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
551 return _readTilt(rotation->p, rotation->axisY);
552}
553
554static int32_t _GBASDLReadGyroZ(struct GBARotationSource* source) {
555 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
556 float z = rotation->zDelta;
557 return z * rotation->gyroSensitivity;
558}
559
560static void _GBASDLRotationSample(struct GBARotationSource* source) {
561 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
562 SDL_JoystickUpdate();
563
564 int x = SDL_JoystickGetAxis(rotation->p->joystick, rotation->gyroX);
565 int y = SDL_JoystickGetAxis(rotation->p->joystick, rotation->gyroY);
566 union {
567 float f;
568 int32_t i;
569 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
570 if (isnan(theta.f)) {
571 theta.f = 0.0f;
572 } else if (theta.f > M_PI) {
573 theta.f -= 2.0f * M_PI;
574 } else if (theta.f < -M_PI) {
575 theta.f += 2.0f * M_PI;
576 }
577 rotation->oldX = x;
578 rotation->oldY = y;
579
580 float oldZ = 0;
581 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
582 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
583 }
584 CircleBufferWrite32(&rotation->zHistory, theta.i);
585 rotation->zDelta += theta.f - oldZ;
586}
587
588#if SDL_VERSION_ATLEAST(2, 0, 0)
589void GBASDLSuspendScreensaver(struct GBASDLEvents* events) {
590 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
591 SDL_DisableScreenSaver();
592 }
593 ++events->screensaverSuspendDepth;
594}
595
596void GBASDLResumeScreensaver(struct GBASDLEvents* events) {
597 --events->screensaverSuspendDepth;
598 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
599 SDL_EnableScreenSaver();
600 }
601}
602
603void GBASDLSetScreensaverSuspendable(struct GBASDLEvents* events, bool suspendable) {
604 bool wasSuspendable = events->screensaverSuspendable;
605 events->screensaverSuspendable = suspendable;
606 if (events->screensaverSuspendDepth > 0) {
607 if (suspendable && !wasSuspendable) {
608 SDL_DisableScreenSaver();
609 } else if (!suspendable && wasSuspendable) {
610 SDL_EnableScreenSaver();
611 }
612 } else {
613 SDL_EnableScreenSaver();
614 }
615}
616#endif