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