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/rr/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#define RUMBLE_PWM 20
26
27DEFINE_VECTOR(SDL_JoystickList, struct SDL_JoystickCombo);
28
29#if SDL_VERSION_ATLEAST(2, 0, 0)
30static void _GBASDLSetRumble(struct GBARumble* rumble, int enable);
31#endif
32static int32_t _GBASDLReadTiltX(struct GBARotationSource* rumble);
33static int32_t _GBASDLReadTiltY(struct GBARotationSource* rumble);
34static int32_t _GBASDLReadGyroZ(struct GBARotationSource* rumble);
35static void _GBASDLRotationSample(struct GBARotationSource* source);
36
37bool GBASDLInitEvents(struct GBASDLEvents* context) {
38#if SDL_VERSION_ATLEAST(2, 0, 4)
39 SDL_SetHint(SDL_HINT_NO_SIGNAL_HANDLERS, "1");
40#endif
41 if (SDL_InitSubSystem(SDL_INIT_JOYSTICK) < 0) {
42 GBALog(0, GBA_LOG_ERROR, "SDL joystick initialization failed: %s", SDL_GetError());
43 }
44
45#if SDL_VERSION_ATLEAST(2, 0, 0)
46 SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
47 if (SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0) {
48 GBALog(0, GBA_LOG_ERROR, "SDL haptic initialization failed: %s", SDL_GetError());
49 }
50 if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
51 GBALog(0, GBA_LOG_ERROR, "SDL video initialization failed: %s", SDL_GetError());
52 }
53#endif
54
55 SDL_JoystickEventState(SDL_ENABLE);
56 int nJoysticks = SDL_NumJoysticks();
57 SDL_JoystickListInit(&context->joysticks, nJoysticks);
58 if (nJoysticks > 0) {
59 GBASDLUpdateJoysticks(context);
60 // Some OSes don't do hotplug detection
61 if (!SDL_JoystickListSize(&context->joysticks)) {
62 int i;
63 for (i = 0; i < nJoysticks; ++i) {
64 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&context->joysticks);
65 joystick->joystick = SDL_JoystickOpen(i);
66 joystick->index = SDL_JoystickListSize(&context->joysticks) - 1;
67#if SDL_VERSION_ATLEAST(2, 0, 0)
68 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
69 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
70#else
71 joystick->id = SDL_JoystickIndex(joystick->joystick);
72#endif
73 }
74 }
75 }
76
77 context->playersAttached = 0;
78
79 size_t i;
80 for (i = 0; i < MAX_PLAYERS; ++i) {
81 context->preferredJoysticks[i] = 0;
82 }
83
84#if !SDL_VERSION_ATLEAST(2, 0, 0)
85 SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
86#else
87 context->screensaverSuspendDepth = 0;
88#endif
89 return true;
90}
91
92void GBASDLDeinitEvents(struct GBASDLEvents* context) {
93 size_t i;
94 for (i = 0; i < SDL_JoystickListSize(&context->joysticks); ++i) {
95 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&context->joysticks, i);
96#if SDL_VERSION_ATLEAST(2, 0, 0)
97 SDL_HapticClose(joystick->haptic);
98#endif
99 SDL_JoystickClose(joystick->joystick);
100 }
101 SDL_JoystickListDeinit(&context->joysticks);
102 SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
103}
104
105void GBASDLEventsLoadConfig(struct GBASDLEvents* context, const struct Configuration* config) {
106 context->preferredJoysticks[0] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 0);
107 context->preferredJoysticks[1] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 1);
108 context->preferredJoysticks[2] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 2);
109 context->preferredJoysticks[3] = GBAInputGetPreferredDevice(config, SDL_BINDING_BUTTON, 3);
110}
111
112void GBASDLInitBindings(struct GBAInputMap* inputMap) {
113#ifdef BUILD_PANDORA
114 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_PAGEDOWN, GBA_KEY_A);
115 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_END, GBA_KEY_B);
116 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RSHIFT, GBA_KEY_L);
117 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RCTRL, GBA_KEY_R);
118 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LALT, GBA_KEY_START);
119 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LCTRL, GBA_KEY_SELECT);
120 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
121 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
122 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
123 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
124#elif SDL_VERSION_ATLEAST(2, 0, 0)
125 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_X, GBA_KEY_A);
126 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_Z, GBA_KEY_B);
127 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_A, GBA_KEY_L);
128 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_S, GBA_KEY_R);
129 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RETURN, GBA_KEY_START);
130 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_BACKSPACE, GBA_KEY_SELECT);
131 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_UP, GBA_KEY_UP);
132 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_DOWN, GBA_KEY_DOWN);
133 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_LEFT, GBA_KEY_LEFT);
134 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDL_SCANCODE_RIGHT, GBA_KEY_RIGHT);
135#else
136 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_x, GBA_KEY_A);
137 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_z, GBA_KEY_B);
138 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_a, GBA_KEY_L);
139 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_s, GBA_KEY_R);
140 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RETURN, GBA_KEY_START);
141 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_BACKSPACE, GBA_KEY_SELECT);
142 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_UP, GBA_KEY_UP);
143 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_DOWN, GBA_KEY_DOWN);
144 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_LEFT, GBA_KEY_LEFT);
145 GBAInputBindKey(inputMap, SDL_BINDING_KEY, SDLK_RIGHT, GBA_KEY_RIGHT);
146#endif
147
148 struct GBAAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
149 GBAInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
150 description = (struct GBAAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
151 GBAInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
152}
153
154bool GBASDLAttachPlayer(struct GBASDLEvents* events, struct GBASDLPlayer* player) {
155 player->joystick = 0;
156
157 if (events->playersAttached >= MAX_PLAYERS) {
158 return false;
159 }
160
161#if SDL_VERSION_ATLEAST(2, 0, 0)
162 player->rumble.d.setRumble = _GBASDLSetRumble;
163 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
164 player->rumble.level = 0;
165 player->rumble.p = player;
166#endif
167
168 player->rotation.d.readTiltX = _GBASDLReadTiltX;
169 player->rotation.d.readTiltY = _GBASDLReadTiltY;
170 player->rotation.d.readGyroZ = _GBASDLReadGyroZ;
171 player->rotation.d.sample = _GBASDLRotationSample;
172 player->rotation.axisX = 2;
173 player->rotation.axisY = 3;
174 player->rotation.gyroSensitivity = 2.2e9f;
175 player->rotation.gyroX = 0;
176 player->rotation.gyroY = 1;
177 player->rotation.zDelta = 0;
178 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
179 player->rotation.p = player;
180
181 player->playerId = events->playersAttached;
182 events->players[player->playerId] = player;
183 size_t firstUnclaimed = SIZE_MAX;
184 size_t index = SIZE_MAX;
185
186 size_t i;
187 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
188 bool claimed = false;
189
190 int p;
191 for (p = 0; p < events->playersAttached; ++p) {
192 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
193 claimed = true;
194 break;
195 }
196 }
197 if (claimed) {
198 continue;
199 }
200
201 if (firstUnclaimed == SIZE_MAX) {
202 firstUnclaimed = i;
203 }
204
205 const char* joystickName;
206#if SDL_VERSION_ATLEAST(2, 0, 0)
207 joystickName = SDL_JoystickName(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick);
208#else
209 joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
210#endif
211 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
212 index = i;
213 break;
214 }
215 }
216
217 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
218 index = firstUnclaimed;
219 }
220
221 if (index != SIZE_MAX) {
222 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
223
224#if SDL_VERSION_ATLEAST(2, 0, 0)
225 if (player->joystick->haptic) {
226 SDL_HapticRumbleInit(player->joystick->haptic);
227 }
228#endif
229 }
230
231 ++events->playersAttached;
232 return true;
233}
234
235void GBASDLDetachPlayer(struct GBASDLEvents* events, struct GBASDLPlayer* player) {
236 if (player != events->players[player->playerId]) {
237 return;
238 }
239 int i;
240 for (i = player->playerId; i < events->playersAttached; ++i) {
241 if (i + 1 < MAX_PLAYERS) {
242 events->players[i] = events->players[i + 1];
243 }
244 if (i < events->playersAttached - 1) {
245 events->players[i]->playerId = i;
246 }
247 }
248 --events->playersAttached;
249 CircleBufferDeinit(&player->rotation.zHistory);
250}
251
252void GBASDLPlayerLoadConfig(struct GBASDLPlayer* context, const struct Configuration* config) {
253 GBAInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
254 if (context->joystick) {
255 GBAInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
256#if SDL_VERSION_ATLEAST(2, 0, 0)
257 const char* name = SDL_JoystickName(context->joystick->joystick);
258#else
259 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
260#endif
261 GBAInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
262
263 const char* value;
264 char* end;
265 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
266 int axis;
267 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisX", name);
268 if (value) {
269 axis = strtol(value, &end, 0);
270 if (axis >= 0 && axis < numAxes && end && !*end) {
271 context->rotation.axisX = axis;
272 }
273 }
274 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisY", name);
275 if (value) {
276 axis = strtol(value, &end, 0);
277 if (axis >= 0 && axis < numAxes && end && !*end) {
278 context->rotation.axisY = axis;
279 }
280 }
281 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisX", name);
282 if (value) {
283 axis = strtol(value, &end, 0);
284 if (axis >= 0 && axis < numAxes && end && !*end) {
285 context->rotation.gyroX = axis;
286 }
287 }
288 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisY", name);
289 if (value) {
290 axis = strtol(value, &end, 0);
291 if (axis >= 0 && axis < numAxes && end && !*end) {
292 context->rotation.gyroY = axis;
293 }
294 }
295 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroSensitivity", name);
296 if (value) {
297 float sensitivity = strtof_u(value, &end);
298 if (end && !*end) {
299 context->rotation.gyroSensitivity = sensitivity;
300 }
301 }
302 }
303}
304
305void GBASDLPlayerSaveConfig(const struct GBASDLPlayer* context, struct Configuration* config) {
306 if (context->joystick) {
307#if SDL_VERSION_ATLEAST(2, 0, 0)
308 const char* name = SDL_JoystickName(context->joystick->joystick);
309#else
310 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
311#endif
312 char value[12];
313 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
314 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisX", value, name);
315 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
316 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisY", value, name);
317 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
318 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisX", value, name);
319 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
320 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisY", value, name);
321 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
322 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
323 }
324}
325
326void GBASDLPlayerChangeJoystick(struct GBASDLEvents* events, struct GBASDLPlayer* player, size_t index) {
327 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
328 return;
329 }
330 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
331}
332
333void GBASDLUpdateJoysticks(struct GBASDLEvents* events) {
334 // Pump SDL joystick events without eating the rest of the events
335 SDL_JoystickUpdate();
336#if SDL_VERSION_ATLEAST(2, 0, 0)
337 SDL_Event event;
338 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
339 if (event.type == SDL_JOYDEVICEADDED) {
340 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
341 joystick->joystick = SDL_JoystickOpen(event.jdevice.which);
342 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
343 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
344#if SDL_VERSION_ATLEAST(2, 0, 0)
345 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
346#endif
347 } else if (event.type == SDL_JOYDEVICEREMOVED) {
348 SDL_JoystickID ids[MAX_PLAYERS];
349 size_t i;
350 for (i = 0; (int) i < events->playersAttached; ++i) {
351 if (events->players[i]->joystick) {
352 ids[i] = events->players[i]->joystick->id;
353 events->players[i]->joystick = 0;
354 } else {
355 ids[i] = -1;
356 }
357 }
358 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
359 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
360 if (joystick->id == event.jdevice.which) {
361 SDL_JoystickListShift(&events->joysticks, i, 1);
362 continue;
363 }
364 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
365 int p;
366 for (p = 0; p < events->playersAttached; ++p) {
367 if (joystick->id == ids[p]) {
368 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
369 }
370 }
371 ++i;
372 }
373 }
374 }
375#endif
376}
377
378static void _pauseAfterFrame(struct GBAThread* context) {
379 context->frameCallback = 0;
380 GBAThreadPauseFromThread(context);
381}
382
383static void _GBASDLHandleKeypress(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
384 enum GBAKey key = GBA_KEY_NONE;
385 if (!event->keysym.mod) {
386#if !defined(BUILD_PANDORA) && SDL_VERSION_ATLEAST(2, 0, 0)
387 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.scancode);
388#else
389 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
390#endif
391 }
392 if (key != GBA_KEY_NONE) {
393 if (event->type == SDL_KEYDOWN) {
394 context->activeKeys |= 1 << key;
395 } else {
396 context->activeKeys &= ~(1 << key);
397 }
398 return;
399 }
400 if (event->keysym.sym == SDLK_TAB) {
401 context->sync.audioWait = event->type != SDL_KEYDOWN;
402 return;
403 }
404 if (event->type == SDL_KEYDOWN) {
405 switch (event->keysym.sym) {
406 case SDLK_F11:
407 if (context->debugger) {
408 ARMDebuggerEnter(context->debugger, DEBUGGER_ENTER_MANUAL, 0);
409 }
410 return;
411#ifdef USE_PNG
412 case SDLK_F12:
413 GBAThreadInterrupt(context);
414 GBAThreadTakeScreenshot(context);
415 GBAThreadContinue(context);
416 return;
417#endif
418 case SDLK_BACKSLASH:
419 GBAThreadPause(context);
420 context->frameCallback = _pauseAfterFrame;
421 GBAThreadUnpause(context);
422 return;
423 case SDLK_BACKQUOTE:
424 GBAThreadInterrupt(context);
425 GBARewind(context, 10);
426 GBAThreadContinue(context);
427 return;
428#ifdef BUILD_PANDORA
429 case SDLK_ESCAPE:
430 GBAThreadEnd(context);
431 return;
432#endif
433 default:
434 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
435 switch (event->keysym.sym) {
436#if SDL_VERSION_ATLEAST(2, 0, 0)
437 case SDLK_f:
438 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
439 sdlContext->fullscreen = !sdlContext->fullscreen;
440 sdlContext->windowUpdated = 1;
441 break;
442#endif
443 case SDLK_p:
444 GBAThreadTogglePause(context);
445 break;
446 case SDLK_n:
447 GBAThreadPause(context);
448 context->frameCallback = _pauseAfterFrame;
449 GBAThreadUnpause(context);
450 break;
451 case SDLK_r:
452 GBAThreadReset(context);
453 break;
454 default:
455 break;
456 }
457 }
458 if (event->keysym.mod & KMOD_SHIFT) {
459 switch (event->keysym.sym) {
460 case SDLK_F1:
461 case SDLK_F2:
462 case SDLK_F3:
463 case SDLK_F4:
464 case SDLK_F5:
465 case SDLK_F6:
466 case SDLK_F7:
467 case SDLK_F8:
468 case SDLK_F9:
469 GBAThreadInterrupt(context);
470 GBASaveState(context, context->dirs.state, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
471 GBAThreadContinue(context);
472 break;
473 default:
474 break;
475 }
476 } else {
477 switch (event->keysym.sym) {
478 case SDLK_F1:
479 case SDLK_F2:
480 case SDLK_F3:
481 case SDLK_F4:
482 case SDLK_F5:
483 case SDLK_F6:
484 case SDLK_F7:
485 case SDLK_F8:
486 case SDLK_F9:
487 GBAThreadInterrupt(context);
488 GBALoadState(context, context->dirs.state, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
489 GBAThreadContinue(context);
490 break;
491 default:
492 break;
493 }
494 }
495 return;
496 }
497 }
498}
499
500static void _GBASDLHandleJoyButton(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
501 enum GBAKey key = 0;
502 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
503 if (key == GBA_KEY_NONE) {
504 return;
505 }
506
507 if (event->type == SDL_JOYBUTTONDOWN) {
508 context->activeKeys |= 1 << key;
509 } else {
510 context->activeKeys &= ~(1 << key);
511 }
512}
513
514static void _GBASDLHandleJoyHat(struct GBAThread* context, const struct SDL_JoyHatEvent* event) {
515 enum GBAKey key = 0;
516
517 if (event->value & SDL_HAT_UP) {
518 key |= 1 << GBA_KEY_UP;
519 }
520 if (event->value & SDL_HAT_LEFT) {
521 key |= 1 << GBA_KEY_LEFT;
522 }
523 if (event->value & SDL_HAT_DOWN) {
524 key |= 1 << GBA_KEY_DOWN;
525 }
526 if (event->value & SDL_HAT_RIGHT) {
527 key |= 1 << GBA_KEY_RIGHT;
528 }
529
530 context->activeKeys &= ~((1 << GBA_KEY_UP) | (1 << GBA_KEY_LEFT) | (1 << GBA_KEY_DOWN) | (1 << GBA_KEY_RIGHT));
531 context->activeKeys |= key;
532}
533
534static void _GBASDLHandleJoyAxis(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
535 int keys = context->activeKeys;
536
537 keys = GBAInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, keys);
538 enum GBAKey key = GBAInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
539 if (key != GBA_KEY_NONE) {
540 keys |= 1 << key;
541 }
542
543 context->activeKeys = keys;
544}
545
546#if SDL_VERSION_ATLEAST(2, 0, 0)
547static void _GBASDLHandleWindowEvent(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
548 UNUSED(context);
549 switch (event->event) {
550 case SDL_WINDOWEVENT_SIZE_CHANGED:
551 sdlContext->windowUpdated = 1;
552 break;
553 }
554}
555#endif
556
557void GBASDLHandleEvent(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const union SDL_Event* event) {
558 switch (event->type) {
559 case SDL_QUIT:
560 GBAThreadEnd(context);
561 break;
562#if SDL_VERSION_ATLEAST(2, 0, 0)
563 case SDL_WINDOWEVENT:
564 _GBASDLHandleWindowEvent(context, sdlContext, &event->window);
565 break;
566#endif
567 case SDL_KEYDOWN:
568 case SDL_KEYUP:
569 _GBASDLHandleKeypress(context, sdlContext, &event->key);
570 break;
571 case SDL_JOYBUTTONDOWN:
572 case SDL_JOYBUTTONUP:
573 _GBASDLHandleJoyButton(context, sdlContext, &event->jbutton);
574 break;
575 case SDL_JOYHATMOTION:
576 _GBASDLHandleJoyHat(context, &event->jhat);
577 break;
578 case SDL_JOYAXISMOTION:
579 _GBASDLHandleJoyAxis(context, sdlContext, &event->jaxis);
580 break;
581 }
582}
583
584#if SDL_VERSION_ATLEAST(2, 0, 0)
585static void _GBASDLSetRumble(struct GBARumble* rumble, int enable) {
586 struct GBASDLRumble* sdlRumble = (struct GBASDLRumble*) rumble;
587 if (!sdlRumble->p->joystick || !sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
588 return;
589 }
590 sdlRumble->level += enable;
591 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
592 int8_t oldLevel;
593 CircleBufferRead8(&sdlRumble->history, &oldLevel);
594 sdlRumble->level -= oldLevel;
595 }
596 CircleBufferWrite8(&sdlRumble->history, enable);
597 if (sdlRumble->level) {
598 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, sdlRumble->level / (float) RUMBLE_PWM, 20);
599 } else {
600 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
601 }
602}
603#endif
604
605static int32_t _readTilt(struct GBASDLPlayer* player, int axis) {
606 if (!player->joystick) {
607 return 0;
608 }
609 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
610}
611
612static int32_t _GBASDLReadTiltX(struct GBARotationSource* source) {
613 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
614 return _readTilt(rotation->p, rotation->axisX);
615}
616
617static int32_t _GBASDLReadTiltY(struct GBARotationSource* source) {
618 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
619 return _readTilt(rotation->p, rotation->axisY);
620}
621
622static int32_t _GBASDLReadGyroZ(struct GBARotationSource* source) {
623 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
624 float z = rotation->zDelta;
625 return z * rotation->gyroSensitivity;
626}
627
628static void _GBASDLRotationSample(struct GBARotationSource* source) {
629 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
630 SDL_JoystickUpdate();
631 if (!rotation->p->joystick) {
632 return;
633 }
634
635 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
636 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
637 union {
638 float f;
639 int32_t i;
640 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
641 if (isnan(theta.f)) {
642 theta.f = 0.0f;
643 } else if (theta.f > M_PI) {
644 theta.f -= 2.0f * M_PI;
645 } else if (theta.f < -M_PI) {
646 theta.f += 2.0f * M_PI;
647 }
648 rotation->oldX = x;
649 rotation->oldY = y;
650
651 float oldZ = 0;
652 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
653 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
654 }
655 CircleBufferWrite32(&rotation->zHistory, theta.i);
656 rotation->zDelta += theta.f - oldZ;
657}
658
659#if SDL_VERSION_ATLEAST(2, 0, 0)
660void GBASDLSuspendScreensaver(struct GBASDLEvents* events) {
661 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
662 SDL_DisableScreenSaver();
663 }
664 ++events->screensaverSuspendDepth;
665}
666
667void GBASDLResumeScreensaver(struct GBASDLEvents* events) {
668 --events->screensaverSuspendDepth;
669 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
670 SDL_EnableScreenSaver();
671 }
672}
673
674void GBASDLSetScreensaverSuspendable(struct GBASDLEvents* events, bool suspendable) {
675 bool wasSuspendable = events->screensaverSuspendable;
676 events->screensaverSuspendable = suspendable;
677 if (events->screensaverSuspendDepth > 0) {
678 if (suspendable && !wasSuspendable) {
679 SDL_DisableScreenSaver();
680 } else if (!suspendable && wasSuspendable) {
681 SDL_EnableScreenSaver();
682 }
683 } else {
684 SDL_EnableScreenSaver();
685 }
686}
687#endif