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 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 13, GBA_KEY_A);
147 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 14, GBA_KEY_B);
148 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 10, GBA_KEY_L);
149 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 11, GBA_KEY_R);
150 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 3, GBA_KEY_START);
151 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 0, GBA_KEY_SELECT);
152 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 4, GBA_KEY_UP);
153 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 6, GBA_KEY_DOWN);
154 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 7, GBA_KEY_LEFT);
155 GBAInputBindKey(inputMap, SDL_BINDING_BUTTON, 5, GBA_KEY_RIGHT);
156
157 struct GBAAxis description = { GBA_KEY_RIGHT, GBA_KEY_LEFT, 0x4000, -0x4000 };
158 GBAInputBindAxis(inputMap, SDL_BINDING_BUTTON, 0, &description);
159 description = (struct GBAAxis) { GBA_KEY_DOWN, GBA_KEY_UP, 0x4000, -0x4000 };
160 GBAInputBindAxis(inputMap, SDL_BINDING_BUTTON, 1, &description);
161}
162
163bool GBASDLAttachPlayer(struct GBASDLEvents* events, struct GBASDLPlayer* player) {
164 player->joystick = 0;
165
166 if (events->playersAttached >= MAX_PLAYERS) {
167 return false;
168 }
169
170#if SDL_VERSION_ATLEAST(2, 0, 0)
171 player->rumble.d.setRumble = _GBASDLSetRumble;
172 CircleBufferInit(&player->rumble.history, RUMBLE_PWM);
173 player->rumble.level = 0;
174 player->rumble.p = player;
175#endif
176
177 player->rotation.d.readTiltX = _GBASDLReadTiltX;
178 player->rotation.d.readTiltY = _GBASDLReadTiltY;
179 player->rotation.d.readGyroZ = _GBASDLReadGyroZ;
180 player->rotation.d.sample = _GBASDLRotationSample;
181 player->rotation.axisX = 2;
182 player->rotation.axisY = 3;
183 player->rotation.gyroSensitivity = 2.2e9f;
184 player->rotation.gyroX = 0;
185 player->rotation.gyroY = 1;
186 player->rotation.zDelta = 0;
187 CircleBufferInit(&player->rotation.zHistory, sizeof(float) * GYRO_STEPS);
188 player->rotation.p = player;
189
190 player->playerId = events->playersAttached;
191 events->players[player->playerId] = player;
192 size_t firstUnclaimed = SIZE_MAX;
193 size_t index = SIZE_MAX;
194
195 size_t i;
196 for (i = 0; i < SDL_JoystickListSize(&events->joysticks); ++i) {
197 bool claimed = false;
198
199 int p;
200 for (p = 0; p < events->playersAttached; ++p) {
201 if (events->players[p]->joystick == SDL_JoystickListGetPointer(&events->joysticks, i)) {
202 claimed = true;
203 break;
204 }
205 }
206 if (claimed) {
207 continue;
208 }
209
210 if (firstUnclaimed == SIZE_MAX) {
211 firstUnclaimed = i;
212 }
213
214 const char* joystickName;
215#if SDL_VERSION_ATLEAST(2, 0, 0)
216 joystickName = SDL_JoystickName(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick);
217#else
218 joystickName = SDL_JoystickName(SDL_JoystickIndex(SDL_JoystickListGetPointer(&events->joysticks, i)->joystick));
219#endif
220 if (events->preferredJoysticks[player->playerId] && strcmp(events->preferredJoysticks[player->playerId], joystickName) == 0) {
221 index = i;
222 break;
223 }
224 }
225
226 if (index == SIZE_MAX && firstUnclaimed != SIZE_MAX) {
227 index = firstUnclaimed;
228 }
229
230 if (index != SIZE_MAX) {
231 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
232
233#if SDL_VERSION_ATLEAST(2, 0, 0)
234 if (player->joystick->haptic) {
235 SDL_HapticRumbleInit(player->joystick->haptic);
236 }
237#endif
238 }
239
240 ++events->playersAttached;
241 return true;
242}
243
244void GBASDLDetachPlayer(struct GBASDLEvents* events, struct GBASDLPlayer* player) {
245 if (player != events->players[player->playerId]) {
246 return;
247 }
248 int i;
249 for (i = player->playerId; i < events->playersAttached; ++i) {
250 if (i + 1 < MAX_PLAYERS) {
251 events->players[i] = events->players[i + 1];
252 }
253 if (i < events->playersAttached - 1) {
254 events->players[i]->playerId = i;
255 }
256 }
257 --events->playersAttached;
258 CircleBufferDeinit(&player->rotation.zHistory);
259}
260
261void GBASDLPlayerLoadConfig(struct GBASDLPlayer* context, const struct Configuration* config) {
262 GBAInputMapLoad(context->bindings, SDL_BINDING_KEY, config);
263 if (context->joystick) {
264 GBAInputMapLoad(context->bindings, SDL_BINDING_BUTTON, config);
265#if SDL_VERSION_ATLEAST(2, 0, 0)
266 const char* name = SDL_JoystickName(context->joystick->joystick);
267#else
268 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
269#endif
270 GBAInputProfileLoad(context->bindings, SDL_BINDING_BUTTON, config, name);
271
272 const char* value;
273 char* end;
274 int numAxes = SDL_JoystickNumAxes(context->joystick->joystick);
275 int axis;
276 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisX", name);
277 if (value) {
278 axis = strtol(value, &end, 0);
279 if (axis >= 0 && axis < numAxes && end && !*end) {
280 context->rotation.axisX = axis;
281 }
282 }
283 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisY", name);
284 if (value) {
285 axis = strtol(value, &end, 0);
286 if (axis >= 0 && axis < numAxes && end && !*end) {
287 context->rotation.axisY = axis;
288 }
289 }
290 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisX", name);
291 if (value) {
292 axis = strtol(value, &end, 0);
293 if (axis >= 0 && axis < numAxes && end && !*end) {
294 context->rotation.gyroX = axis;
295 }
296 }
297 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisY", name);
298 if (value) {
299 axis = strtol(value, &end, 0);
300 if (axis >= 0 && axis < numAxes && end && !*end) {
301 context->rotation.gyroY = axis;
302 }
303 }
304 value = GBAInputGetCustomValue(config, SDL_BINDING_BUTTON, "gyroSensitivity", name);
305 if (value) {
306 float sensitivity = strtof_u(value, &end);
307 if (end && !*end) {
308 context->rotation.gyroSensitivity = sensitivity;
309 }
310 }
311 }
312}
313
314void GBASDLPlayerSaveConfig(const struct GBASDLPlayer* context, struct Configuration* config) {
315 if (context->joystick) {
316#if SDL_VERSION_ATLEAST(2, 0, 0)
317 const char* name = SDL_JoystickName(context->joystick->joystick);
318#else
319 const char* name = SDL_JoystickName(SDL_JoystickIndex(context->joystick->joystick));
320#endif
321 char value[12];
322 snprintf(value, sizeof(value), "%i", context->rotation.axisX);
323 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisX", value, name);
324 snprintf(value, sizeof(value), "%i", context->rotation.axisY);
325 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "tiltAxisY", value, name);
326 snprintf(value, sizeof(value), "%i", context->rotation.gyroX);
327 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisX", value, name);
328 snprintf(value, sizeof(value), "%i", context->rotation.gyroY);
329 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroAxisY", value, name);
330 snprintf(value, sizeof(value), "%g", context->rotation.gyroSensitivity);
331 GBAInputSetCustomValue(config, SDL_BINDING_BUTTON, "gyroSensitivity", value, name);
332 }
333}
334
335void GBASDLPlayerChangeJoystick(struct GBASDLEvents* events, struct GBASDLPlayer* player, size_t index) {
336 if (player->playerId >= MAX_PLAYERS || index >= SDL_JoystickListSize(&events->joysticks)) {
337 return;
338 }
339 player->joystick = SDL_JoystickListGetPointer(&events->joysticks, index);
340}
341
342void GBASDLUpdateJoysticks(struct GBASDLEvents* events) {
343 // Pump SDL joystick events without eating the rest of the events
344 SDL_JoystickUpdate();
345#if SDL_VERSION_ATLEAST(2, 0, 0)
346 SDL_Event event;
347 while (SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_JOYDEVICEADDED, SDL_JOYDEVICEREMOVED) > 0) {
348 if (event.type == SDL_JOYDEVICEADDED) {
349 struct SDL_JoystickCombo* joystick = SDL_JoystickListAppend(&events->joysticks);
350 joystick->joystick = SDL_JoystickOpen(event.jdevice.which);
351 joystick->id = SDL_JoystickInstanceID(joystick->joystick);
352 joystick->index = SDL_JoystickListSize(&events->joysticks) - 1;
353#if SDL_VERSION_ATLEAST(2, 0, 0)
354 joystick->haptic = SDL_HapticOpenFromJoystick(joystick->joystick);
355#endif
356 } else if (event.type == SDL_JOYDEVICEREMOVED) {
357 SDL_JoystickID ids[MAX_PLAYERS];
358 size_t i;
359 for (i = 0; (int) i < events->playersAttached; ++i) {
360 if (events->players[i]->joystick) {
361 ids[i] = events->players[i]->joystick->id;
362 events->players[i]->joystick = 0;
363 } else {
364 ids[i] = -1;
365 }
366 }
367 for (i = 0; i < SDL_JoystickListSize(&events->joysticks);) {
368 struct SDL_JoystickCombo* joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
369 if (joystick->id == event.jdevice.which) {
370 SDL_JoystickListShift(&events->joysticks, i, 1);
371 continue;
372 }
373 SDL_JoystickListGetPointer(&events->joysticks, i)->index = i;
374 int p;
375 for (p = 0; p < events->playersAttached; ++p) {
376 if (joystick->id == ids[p]) {
377 events->players[p]->joystick = SDL_JoystickListGetPointer(&events->joysticks, i);
378 }
379 }
380 ++i;
381 }
382 }
383 }
384#endif
385}
386
387static void _pauseAfterFrame(struct GBAThread* context) {
388 context->frameCallback = 0;
389 GBAThreadPauseFromThread(context);
390}
391
392static void _GBASDLHandleKeypress(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_KeyboardEvent* event) {
393 enum GBAKey key = GBA_KEY_NONE;
394 if (!event->keysym.mod) {
395#if !defined(BUILD_PANDORA) && SDL_VERSION_ATLEAST(2, 0, 0)
396 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.scancode);
397#else
398 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_KEY, event->keysym.sym);
399#endif
400 }
401 if (key != GBA_KEY_NONE) {
402 if (event->type == SDL_KEYDOWN) {
403 context->activeKeys |= 1 << key;
404 } else {
405 context->activeKeys &= ~(1 << key);
406 }
407 return;
408 }
409 if (event->keysym.sym == SDLK_TAB) {
410 context->sync.audioWait = event->type != SDL_KEYDOWN;
411 return;
412 }
413 if (event->type == SDL_KEYDOWN) {
414 switch (event->keysym.sym) {
415 case SDLK_F11:
416 if (context->debugger) {
417 ARMDebuggerEnter(context->debugger, DEBUGGER_ENTER_MANUAL, 0);
418 }
419 return;
420#ifdef USE_PNG
421 case SDLK_F12:
422 GBAThreadInterrupt(context);
423 GBAThreadTakeScreenshot(context);
424 GBAThreadContinue(context);
425 return;
426#endif
427 case SDLK_BACKSLASH:
428 GBAThreadPause(context);
429 context->frameCallback = _pauseAfterFrame;
430 GBAThreadUnpause(context);
431 return;
432 case SDLK_BACKQUOTE:
433 GBAThreadInterrupt(context);
434 GBARewind(context, 10);
435 GBAThreadContinue(context);
436 return;
437#ifdef BUILD_PANDORA
438 case SDLK_ESCAPE:
439 GBAThreadEnd(context);
440 return;
441#endif
442 default:
443 if ((event->keysym.mod & GUI_MOD) && (event->keysym.mod & GUI_MOD) == event->keysym.mod) {
444 switch (event->keysym.sym) {
445#if SDL_VERSION_ATLEAST(2, 0, 0)
446 case SDLK_f:
447 SDL_SetWindowFullscreen(sdlContext->window, sdlContext->fullscreen ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
448 sdlContext->fullscreen = !sdlContext->fullscreen;
449 sdlContext->windowUpdated = 1;
450 break;
451#endif
452 case SDLK_p:
453 GBAThreadTogglePause(context);
454 break;
455 case SDLK_n:
456 GBAThreadPause(context);
457 context->frameCallback = _pauseAfterFrame;
458 GBAThreadUnpause(context);
459 break;
460 case SDLK_r:
461 GBAThreadReset(context);
462 break;
463 default:
464 break;
465 }
466 }
467 if (event->keysym.mod & KMOD_SHIFT) {
468 switch (event->keysym.sym) {
469 case SDLK_F1:
470 case SDLK_F2:
471 case SDLK_F3:
472 case SDLK_F4:
473 case SDLK_F5:
474 case SDLK_F6:
475 case SDLK_F7:
476 case SDLK_F8:
477 case SDLK_F9:
478 GBAThreadInterrupt(context);
479 GBASaveState(context, context->dirs.state, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
480 GBAThreadContinue(context);
481 break;
482 default:
483 break;
484 }
485 } else {
486 switch (event->keysym.sym) {
487 case SDLK_F1:
488 case SDLK_F2:
489 case SDLK_F3:
490 case SDLK_F4:
491 case SDLK_F5:
492 case SDLK_F6:
493 case SDLK_F7:
494 case SDLK_F8:
495 case SDLK_F9:
496 GBAThreadInterrupt(context);
497 GBALoadState(context, context->dirs.state, event->keysym.sym - SDLK_F1 + 1, SAVESTATE_SCREENSHOT);
498 GBAThreadContinue(context);
499 break;
500 default:
501 break;
502 }
503 }
504 return;
505 }
506 }
507}
508
509static void _GBASDLHandleJoyButton(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_JoyButtonEvent* event) {
510 enum GBAKey key = 0;
511 key = GBAInputMapKey(sdlContext->bindings, SDL_BINDING_BUTTON, event->button);
512 if (key == GBA_KEY_NONE) {
513 return;
514 }
515
516 if (event->type == SDL_JOYBUTTONDOWN) {
517 context->activeKeys |= 1 << key;
518 } else {
519 context->activeKeys &= ~(1 << key);
520 }
521}
522
523static void _GBASDLHandleJoyHat(struct GBAThread* context, const struct SDL_JoyHatEvent* event) {
524 enum GBAKey key = 0;
525
526 if (event->value & SDL_HAT_UP) {
527 key |= 1 << GBA_KEY_UP;
528 }
529 if (event->value & SDL_HAT_LEFT) {
530 key |= 1 << GBA_KEY_LEFT;
531 }
532 if (event->value & SDL_HAT_DOWN) {
533 key |= 1 << GBA_KEY_DOWN;
534 }
535 if (event->value & SDL_HAT_RIGHT) {
536 key |= 1 << GBA_KEY_RIGHT;
537 }
538
539 context->activeKeys &= ~((1 << GBA_KEY_UP) | (1 << GBA_KEY_LEFT) | (1 << GBA_KEY_DOWN) | (1 << GBA_KEY_RIGHT));
540 context->activeKeys |= key;
541}
542
543static void _GBASDLHandleJoyAxis(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_JoyAxisEvent* event) {
544 int keys = context->activeKeys;
545
546 keys = GBAInputClearAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, keys);
547 enum GBAKey key = GBAInputMapAxis(sdlContext->bindings, SDL_BINDING_BUTTON, event->axis, event->value);
548 if (key != GBA_KEY_NONE) {
549 keys |= 1 << key;
550 }
551
552 context->activeKeys = keys;
553}
554
555#if SDL_VERSION_ATLEAST(2, 0, 0)
556static void _GBASDLHandleWindowEvent(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const struct SDL_WindowEvent* event) {
557 UNUSED(context);
558 switch (event->event) {
559 case SDL_WINDOWEVENT_SIZE_CHANGED:
560 sdlContext->windowUpdated = 1;
561 break;
562 }
563}
564#endif
565
566void GBASDLHandleEvent(struct GBAThread* context, struct GBASDLPlayer* sdlContext, const union SDL_Event* event) {
567 switch (event->type) {
568 case SDL_QUIT:
569 GBAThreadEnd(context);
570 break;
571#if SDL_VERSION_ATLEAST(2, 0, 0)
572 case SDL_WINDOWEVENT:
573 _GBASDLHandleWindowEvent(context, sdlContext, &event->window);
574 break;
575#endif
576 case SDL_KEYDOWN:
577 case SDL_KEYUP:
578 _GBASDLHandleKeypress(context, sdlContext, &event->key);
579 break;
580 case SDL_JOYBUTTONDOWN:
581 case SDL_JOYBUTTONUP:
582 _GBASDLHandleJoyButton(context, sdlContext, &event->jbutton);
583 break;
584 case SDL_JOYHATMOTION:
585 _GBASDLHandleJoyHat(context, &event->jhat);
586 break;
587 case SDL_JOYAXISMOTION:
588 _GBASDLHandleJoyAxis(context, sdlContext, &event->jaxis);
589 break;
590 }
591}
592
593#if SDL_VERSION_ATLEAST(2, 0, 0)
594static void _GBASDLSetRumble(struct GBARumble* rumble, int enable) {
595 struct GBASDLRumble* sdlRumble = (struct GBASDLRumble*) rumble;
596 if (!sdlRumble->p->joystick->haptic || !SDL_HapticRumbleSupported(sdlRumble->p->joystick->haptic)) {
597 return;
598 }
599 sdlRumble->level += enable;
600 if (CircleBufferSize(&sdlRumble->history) == RUMBLE_PWM) {
601 int8_t oldLevel;
602 CircleBufferRead8(&sdlRumble->history, &oldLevel);
603 sdlRumble->level -= oldLevel;
604 }
605 CircleBufferWrite8(&sdlRumble->history, enable);
606 if (sdlRumble->level) {
607 SDL_HapticRumblePlay(sdlRumble->p->joystick->haptic, sdlRumble->level / (float) RUMBLE_PWM, 20);
608 } else {
609 SDL_HapticRumbleStop(sdlRumble->p->joystick->haptic);
610 }
611}
612#endif
613
614static int32_t _readTilt(struct GBASDLPlayer* player, int axis) {
615 if (!player->joystick) {
616 return 0;
617 }
618 return SDL_JoystickGetAxis(player->joystick->joystick, axis) * 0x3800;
619}
620
621static int32_t _GBASDLReadTiltX(struct GBARotationSource* source) {
622 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
623 return _readTilt(rotation->p, rotation->axisX);
624}
625
626static int32_t _GBASDLReadTiltY(struct GBARotationSource* source) {
627 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
628 return _readTilt(rotation->p, rotation->axisY);
629}
630
631static int32_t _GBASDLReadGyroZ(struct GBARotationSource* source) {
632 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
633 float z = rotation->zDelta;
634 return z * rotation->gyroSensitivity;
635}
636
637static void _GBASDLRotationSample(struct GBARotationSource* source) {
638 struct GBASDLRotation* rotation = (struct GBASDLRotation*) source;
639 SDL_JoystickUpdate();
640 if (!rotation->p->joystick) {
641 return;
642 }
643
644 int x = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroX);
645 int y = SDL_JoystickGetAxis(rotation->p->joystick->joystick, rotation->gyroY);
646 union {
647 float f;
648 int32_t i;
649 } theta = { .f = atan2f(y, x) - atan2f(rotation->oldY, rotation->oldX) };
650 if (isnan(theta.f)) {
651 theta.f = 0.0f;
652 } else if (theta.f > M_PI) {
653 theta.f -= 2.0f * M_PI;
654 } else if (theta.f < -M_PI) {
655 theta.f += 2.0f * M_PI;
656 }
657 rotation->oldX = x;
658 rotation->oldY = y;
659
660 float oldZ = 0;
661 if (CircleBufferSize(&rotation->zHistory) == GYRO_STEPS * sizeof(float)) {
662 CircleBufferRead32(&rotation->zHistory, (int32_t*) &oldZ);
663 }
664 CircleBufferWrite32(&rotation->zHistory, theta.i);
665 rotation->zDelta += theta.f - oldZ;
666}
667
668#if SDL_VERSION_ATLEAST(2, 0, 0)
669void GBASDLSuspendScreensaver(struct GBASDLEvents* events) {
670 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
671 SDL_DisableScreenSaver();
672 }
673 ++events->screensaverSuspendDepth;
674}
675
676void GBASDLResumeScreensaver(struct GBASDLEvents* events) {
677 --events->screensaverSuspendDepth;
678 if (events->screensaverSuspendDepth == 0 && events->screensaverSuspendable) {
679 SDL_EnableScreenSaver();
680 }
681}
682
683void GBASDLSetScreensaverSuspendable(struct GBASDLEvents* events, bool suspendable) {
684 bool wasSuspendable = events->screensaverSuspendable;
685 events->screensaverSuspendable = suspendable;
686 if (events->screensaverSuspendDepth > 0) {
687 if (suspendable && !wasSuspendable) {
688 SDL_DisableScreenSaver();
689 } else if (!suspendable && wasSuspendable) {
690 SDL_EnableScreenSaver();
691 }
692 } else {
693 SDL_EnableScreenSaver();
694 }
695}
696#endif