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@@ -21,6 +21,10 @@
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#include "../../SDL_internal.h"
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/* This is the iOS implementation of the SDL joystick API */
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+#include "SDL_sysjoystick_c.h"
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+
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+/* needed for SDL_IPHONE_MAX_GFORCE macro */
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+#include "SDL_config_iphoneos.h"
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#include "SDL_joystick.h"
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#include "SDL_hints.h"
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@@ -28,15 +32,221 @@
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#include "../SDL_sysjoystick.h"
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#include "../SDL_joystick_c.h"
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+#if !SDL_EVENTS_DISABLED
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+#include "../../events/SDL_events_c.h"
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+#endif
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+
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#import <CoreMotion/CoreMotion.h>
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-/* needed for SDL_IPHONE_MAX_GFORCE macro */
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-#import "SDL_config_iphoneos.h"
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+#ifdef SDL_JOYSTICK_MFI
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+#import <GameController/GameController.h>
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-const char *accelerometerName = "iOS Accelerometer";
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+static id connectObserver = nil;
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+static id disconnectObserver = nil;
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+#endif /* SDL_JOYSTICK_MFI */
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+static const char *accelerometerName = "iOS Accelerometer";
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static CMMotionManager *motionManager = nil;
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+
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+static SDL_JoystickDeviceItem *deviceList = NULL;
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+
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static int numjoysticks = 0;
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+static SDL_JoystickID instancecounter = 0;
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+
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+static SDL_JoystickDeviceItem *
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+GetDeviceForIndex(int device_index)
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+{
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+ SDL_JoystickDeviceItem *device = deviceList;
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+ int i = 0;
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+
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+ while (i < device_index) {
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+ if (device == NULL) {
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+ return NULL;
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+ }
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+ device = device->next;
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+ i++;
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+ }
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+
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+ return device;
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+}
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+
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+static void
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+SDL_SYS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCController *controller)
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+{
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+#ifdef SDL_JOYSTICK_MFI
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+ const char *name = NULL;
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+ /* Explicitly retain the controller because SDL_JoystickDeviceItem is a
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+ * struct, and ARC doesn't work with structs. */
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+ device->controller = (__bridge GCController *) CFBridgingRetain(controller);
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+
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+ if (controller.vendorName) {
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+ name = controller.vendorName.UTF8String;
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+ }
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+
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+ if (!name) {
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+ name = "MFi Gamepad";
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+ }
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+
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+ device->name = SDL_strdup(name);
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+
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+ device->guid.data[0] = 'M';
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+ device->guid.data[1] = 'F';
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+ device->guid.data[2] = 'i';
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+ device->guid.data[3] = 'G';
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+ device->guid.data[4] = 'a';
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+ device->guid.data[5] = 'm';
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+ device->guid.data[6] = 'e';
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+ device->guid.data[7] = 'p';
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+ device->guid.data[8] = 'a';
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+ device->guid.data[9] = 'd';
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+
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+ if (controller.extendedGamepad) {
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+ device->guid.data[10] = 1;
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+ } else if (controller.gamepad) {
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+ device->guid.data[10] = 2;
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+ }
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+
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+ if (controller.extendedGamepad) {
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+ device->naxes = 6; /* 2 thumbsticks and 2 triggers */
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+ device->nhats = 1; /* d-pad */
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+ device->nbuttons = 7; /* ABXY, shoulder buttons, pause button */
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+ } else if (controller.gamepad) {
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+ device->naxes = 0; /* no traditional analog inputs */
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+ device->nhats = 1; /* d-pad */
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+ device->nbuttons = 7; /* ABXY, shoulder buttons, pause button */
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+ }
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+ /* TODO: Handle micro profiles on tvOS. */
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+#endif
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+}
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+
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+static void
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+SDL_SYS_AddJoystickDevice(GCController *controller, SDL_bool accelerometer)
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+{
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+ SDL_JoystickDeviceItem *device = deviceList;
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+#if !SDL_EVENTS_DISABLED
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+ SDL_Event event;
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+#endif
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+
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+ while (device != NULL) {
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+ if (device->controller == controller) {
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+ return;
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+ }
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+ device = device->next;
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+ }
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+
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+ device = (SDL_JoystickDeviceItem *) SDL_malloc(sizeof(SDL_JoystickDeviceItem));
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+ if (device == NULL) {
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+ return;
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+ }
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+
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+ SDL_zerop(device);
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+
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+ device->accelerometer = accelerometer;
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+ device->instance_id = instancecounter++;
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+
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+ if (accelerometer) {
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+ device->name = SDL_strdup(accelerometerName);
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+ device->naxes = 3; /* Device acceleration in the x, y, and z axes. */
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+ device->nhats = 0;
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+ device->nbuttons = 0;
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+
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+ /* Use the accelerometer name as a GUID. */
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+ SDL_memcpy(&device->guid.data, device->name, SDL_min(sizeof(SDL_JoystickGUID), SDL_strlen(device->name)));
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+ } else if (controller) {
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+ SDL_SYS_AddMFIJoystickDevice(device, controller);
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+ }
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+
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+ if (deviceList == NULL) {
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+ deviceList = device;
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+ } else {
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+ SDL_JoystickDeviceItem *lastdevice = deviceList;
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+ while (lastdevice->next != NULL) {
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+ lastdevice = lastdevice->next;
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+ }
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+ lastdevice->next = device;
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+ }
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+
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+ ++numjoysticks;
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+
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+#if !SDL_EVENTS_DISABLED
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+ event.type = SDL_JOYDEVICEADDED;
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+
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+ if (SDL_GetEventState(event.type) == SDL_ENABLE) {
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+ event.jdevice.which = numjoysticks - 1;
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+ if ((SDL_EventOK == NULL) ||
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+ (*SDL_EventOK)(SDL_EventOKParam, &event)) {
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+ SDL_PushEvent(&event);
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+ }
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+ }
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+#endif /* !SDL_EVENTS_DISABLED */
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+}
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+
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+static SDL_JoystickDeviceItem *
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+SDL_SYS_RemoveJoystickDevice(SDL_JoystickDeviceItem *device)
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+{
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+ SDL_JoystickDeviceItem *prev = NULL;
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+ SDL_JoystickDeviceItem *next = NULL;
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+ SDL_JoystickDeviceItem *item = deviceList;
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+#if !SDL_EVENTS_DISABLED
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+ SDL_Event event;
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+#endif
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+
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+ if (device == NULL) {
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+ return NULL;
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+ }
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+
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+ next = device->next;
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+
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+ while (item != NULL) {
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+ if (item == device) {
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+ break;
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+ }
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+ prev = item;
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+ item = item->next;
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+ }
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+
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+ /* Unlink the device item from the device list. */
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+ if (prev) {
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+ prev->next = device->next;
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+ } else if (device == deviceList) {
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+ deviceList = device->next;
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+ }
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+
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+ if (device->joystick) {
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+ device->joystick->hwdata = NULL;
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+ }
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+
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+#ifdef SDL_JOYSTICK_MFI
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+ @autoreleasepool {
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+ if (device->controller) {
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+ /* The controller was explicitly retained in the struct, so it
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+ * should be explicitly released before freeing the struct. */
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+ GCController *controller = CFBridgingRelease((__bridge CFTypeRef)(device->controller));
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+ controller.controllerPausedHandler = nil;
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+ device->controller = nil;
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+ }
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+ }
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+#endif /* SDL_JOYSTICK_MFI */
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+
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+ --numjoysticks;
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+
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+#if !SDL_EVENTS_DISABLED
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+ event.type = SDL_JOYDEVICEREMOVED;
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+
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+ if (SDL_GetEventState(event.type) == SDL_ENABLE) {
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+ event.jdevice.which = device->instance_id;
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+ if ((SDL_EventOK == NULL) ||
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+ (*SDL_EventOK)(SDL_EventOKParam, &event)) {
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+ SDL_PushEvent(&event);
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+ }
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+ }
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+#endif /* !SDL_EVENTS_DISABLED */
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+
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+ SDL_free(device->name);
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+ SDL_free(device);
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+
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+ return next;
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+}
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/* Function to scan the system for joysticks.
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* Joystick 0 should be the system default joystick.
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@@ -45,10 +255,48 @@ static int numjoysticks = 0;
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int
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SDL_SYS_JoystickInit(void)
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{
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- const char *hint = SDL_GetHint(SDL_HINT_ACCELEROMETER_AS_JOYSTICK);
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- if (!hint || SDL_atoi(hint)) {
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- /* Default behavior, accelerometer as joystick */
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- numjoysticks = 1;
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+ @autoreleasepool {
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+ NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
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+ const char *hint = SDL_GetHint(SDL_HINT_ACCELEROMETER_AS_JOYSTICK);
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+
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+ if (!hint || SDL_atoi(hint)) {
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+ /* Default behavior, accelerometer as joystick */
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+ SDL_SYS_AddJoystickDevice(nil, SDL_TRUE);
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+ }
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+
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+#ifdef SDL_JOYSTICK_MFI
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+ /* GameController.framework was added in iOS 7. */
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+ if (![GCController class]) {
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+ return numjoysticks;
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+ }
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+
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+ for (GCController *controller in [GCController controllers]) {
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+ SDL_SYS_AddJoystickDevice(controller, SDL_FALSE);
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+ }
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+
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+ connectObserver = [center addObserverForName:GCControllerDidConnectNotification
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+ object:nil
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+ queue:nil
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+ usingBlock:^(NSNotification *note) {
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+ GCController *controller = note.object;
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+ SDL_SYS_AddJoystickDevice(controller, SDL_FALSE);
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+ }];
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+
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+ disconnectObserver = [center addObserverForName:GCControllerDidDisconnectNotification
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+ object:nil
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+ queue:nil
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+ usingBlock:^(NSNotification *note) {
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+ GCController *controller = note.object;
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+ SDL_JoystickDeviceItem *device = deviceList;
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+ while (device != NULL) {
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+ if (device->controller == controller) {
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+ SDL_SYS_RemoveJoystickDevice(device);
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+ break;
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+ }
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+ device = device->next;
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+ }
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+ }];
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+#endif /* SDL_JOYSTICK_MFI */
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}
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return numjoysticks;
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@@ -67,13 +315,15 @@ void SDL_SYS_JoystickDetect()
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const char *
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SDL_SYS_JoystickNameForDeviceIndex(int device_index)
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{
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- return accelerometerName;
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+ SDL_JoystickDeviceItem *device = GetDeviceForIndex(device_index);
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+ return device ? device->name : "Unknown";
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}
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/* Function to perform the mapping from device index to the instance id for this index */
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SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
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{
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- return device_index;
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+ SDL_JoystickDeviceItem *device = GetDeviceForIndex(device_index);
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+ return device ? device->instance_id : 0;
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}
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/* Function to open a joystick for use.
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@@ -84,38 +334,80 @@ SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
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int
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SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index)
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{
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- joystick->naxes = 3;
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- joystick->nhats = 0;
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+ SDL_JoystickDeviceItem *device = GetDeviceForIndex(device_index);
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+ if (device == NULL) {
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+ return SDL_SetError("Could not open Joystick: no hardware device for the specified index");
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+ }
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+
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+ joystick->hwdata = device;
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+ joystick->instance_id = device->instance_id;
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+
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+ joystick->naxes = device->naxes;
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+ joystick->nhats = device->nhats;
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+ joystick->nbuttons = device->nbuttons;
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joystick->nballs = 0;
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- joystick->nbuttons = 0;
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+
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+ device->joystick = joystick;
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@autoreleasepool {
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- if (motionManager == nil) {
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- motionManager = [[CMMotionManager alloc] init];
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+ if (device->accelerometer) {
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+ if (motionManager == nil) {
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+ motionManager = [[CMMotionManager alloc] init];
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+ }
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+
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+ /* Shorter times between updates can significantly increase CPU usage. */
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+ motionManager.accelerometerUpdateInterval = 0.1;
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+ [motionManager startAccelerometerUpdates];
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+ } else {
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+#ifdef SDL_JOYSTICK_MFI
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+ GCController *controller = device->controller;
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+ BOOL usedPlayerIndexSlots[4] = {NO, NO, NO, NO};
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+
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+ /* Find the player index of all other connected controllers. */
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+ for (GCController *c in [GCController controllers]) {
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+ if (c != controller && c.playerIndex >= 0) {
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+ usedPlayerIndexSlots[c.playerIndex] = YES;
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+ }
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+ }
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+
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+ /* Set this controller's player index to the first unused index.
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+ * FIXME: This logic isn't great... but SDL doesn't expose this
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+ * concept in its external API, so we don't have much to go on. */
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+ for (int i = 0; i < 4; i++) {
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+ if (!usedPlayerIndexSlots[i]) {
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+ controller.playerIndex = i;
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+ break;
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+ }
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+ }
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+
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+ controller.controllerPausedHandler = ^(GCController *controller) {
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+ if (joystick->hwdata) {
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+ ++joystick->hwdata->num_pause_presses;
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+ }
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+ };
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+#endif /* SDL_JOYSTICK_MFI */
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}
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-
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- /* Shorter times between updates can significantly increase CPU usage. */
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- motionManager.accelerometerUpdateInterval = 0.1;
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- [motionManager startAccelerometerUpdates];
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}
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return 0;
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}
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/* Function to determine if this joystick is attached to the system right now */
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-SDL_bool SDL_SYS_JoystickAttached(SDL_Joystick *joystick)
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+SDL_bool
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+SDL_SYS_JoystickAttached(SDL_Joystick *joystick)
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{
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- return SDL_TRUE;
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+ return joystick->hwdata != NULL;
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}
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-static void SDL_SYS_AccelerometerUpdate(SDL_Joystick * joystick)
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+static void
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+SDL_SYS_AccelerometerUpdate(SDL_Joystick * joystick)
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{
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const float maxgforce = SDL_IPHONE_MAX_GFORCE;
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const SInt16 maxsint16 = 0x7FFF;
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CMAcceleration accel;
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@autoreleasepool {
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- if (!motionManager.accelerometerActive) {
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+ if (!motionManager.isAccelerometerActive) {
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return;
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}
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@@ -144,9 +436,94 @@ static void SDL_SYS_AccelerometerUpdate(SDL_Joystick * joystick)
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accel.z = SDL_min(SDL_max(accel.z, -maxgforce), maxgforce);
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/* pass in data mapped to range of SInt16 */
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- SDL_PrivateJoystickAxis(joystick, 0, (accel.x / maxgforce) * maxsint16);
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+ SDL_PrivateJoystickAxis(joystick, 0, (accel.x / maxgforce) * maxsint16);
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SDL_PrivateJoystickAxis(joystick, 1, -(accel.y / maxgforce) * maxsint16);
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- SDL_PrivateJoystickAxis(joystick, 2, (accel.z / maxgforce) * maxsint16);
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+ SDL_PrivateJoystickAxis(joystick, 2, (accel.z / maxgforce) * maxsint16);
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+}
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+
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+#ifdef SDL_JOYSTICK_MFI
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+static Uint8
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+SDL_SYS_MFIJoystickHatStateForDPad(GCControllerDirectionPad *dpad)
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+{
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+ Uint8 hat = 0;
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+
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+ if (dpad.up.isPressed) {
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+ hat |= SDL_HAT_UP;
|
|
|
+ } else if (dpad.down.isPressed) {
|
|
|
+ hat |= SDL_HAT_DOWN;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (dpad.left.isPressed) {
|
|
|
+ hat |= SDL_HAT_LEFT;
|
|
|
+ } else if (dpad.right.isPressed) {
|
|
|
+ hat |= SDL_HAT_RIGHT;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (hat == 0) {
|
|
|
+ return SDL_HAT_CENTERED;
|
|
|
+ }
|
|
|
+
|
|
|
+ return hat;
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+static void
|
|
|
+SDL_SYS_MFIJoystickUpdate(SDL_Joystick * joystick)
|
|
|
+{
|
|
|
+#ifdef SDL_JOYSTICK_MFI
|
|
|
+ @autoreleasepool {
|
|
|
+ GCController *controller = joystick->hwdata->controller;
|
|
|
+ Uint8 hatstate = SDL_HAT_CENTERED;
|
|
|
+ int i;
|
|
|
+
|
|
|
+ if (controller.extendedGamepad) {
|
|
|
+ GCExtendedGamepad *gamepad = controller.extendedGamepad;
|
|
|
+
|
|
|
+ /* Axis order matches the XInput Windows mappings. */
|
|
|
+ SDL_PrivateJoystickAxis(joystick, 0, (Sint16) (gamepad.leftThumbstick.xAxis.value * 32767));
|
|
|
+ SDL_PrivateJoystickAxis(joystick, 1, (Sint16) (gamepad.leftThumbstick.yAxis.value * -32767));
|
|
|
+ SDL_PrivateJoystickAxis(joystick, 2, (Sint16) ((gamepad.leftTrigger.value * 65535) - 32768));
|
|
|
+ SDL_PrivateJoystickAxis(joystick, 3, (Sint16) (gamepad.rightThumbstick.xAxis.value * 32767));
|
|
|
+ SDL_PrivateJoystickAxis(joystick, 4, (Sint16) (gamepad.rightThumbstick.yAxis.value * -32767));
|
|
|
+ SDL_PrivateJoystickAxis(joystick, 5, (Sint16) ((gamepad.rightTrigger.value * 65535) - 32768));
|
|
|
+
|
|
|
+ hatstate = SDL_SYS_MFIJoystickHatStateForDPad(gamepad.dpad);
|
|
|
+
|
|
|
+ /* Button order matches the XInput Windows mappings. */
|
|
|
+ SDL_PrivateJoystickButton(joystick, 0, gamepad.buttonA.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 1, gamepad.buttonB.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 2, gamepad.buttonX.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 3, gamepad.buttonY.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 4, gamepad.leftShoulder.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 5, gamepad.rightShoulder.isPressed);
|
|
|
+ } else if (controller.gamepad) {
|
|
|
+ GCGamepad *gamepad = controller.gamepad;
|
|
|
+
|
|
|
+ hatstate = SDL_SYS_MFIJoystickHatStateForDPad(gamepad.dpad);
|
|
|
+
|
|
|
+ /* Button order matches the XInput Windows mappings. */
|
|
|
+ SDL_PrivateJoystickButton(joystick, 0, gamepad.buttonA.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 1, gamepad.buttonB.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 2, gamepad.buttonX.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 3, gamepad.buttonY.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 4, gamepad.leftShoulder.isPressed);
|
|
|
+ SDL_PrivateJoystickButton(joystick, 5, gamepad.rightShoulder.isPressed);
|
|
|
+ }
|
|
|
+ /* TODO: Handle micro profiles on tvOS. */
|
|
|
+
|
|
|
+ SDL_PrivateJoystickHat(joystick, 0, hatstate);
|
|
|
+
|
|
|
+ for (i = 0; i < joystick->hwdata->num_pause_presses; i++) {
|
|
|
+ /* The pause button is always last. */
|
|
|
+ Uint8 pausebutton = joystick->nbuttons - 1;
|
|
|
+
|
|
|
+ SDL_PrivateJoystickButton(joystick, pausebutton, 1);
|
|
|
+ SDL_PrivateJoystickButton(joystick, pausebutton, 0);
|
|
|
+ }
|
|
|
+
|
|
|
+ joystick->hwdata->num_pause_presses = 0;
|
|
|
+ }
|
|
|
+#endif
|
|
|
}
|
|
|
|
|
|
/* Function to update the state of a joystick - called as a device poll.
|
|
@@ -157,15 +534,40 @@ static void SDL_SYS_AccelerometerUpdate(SDL_Joystick * joystick)
|
|
|
void
|
|
|
SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
|
|
|
{
|
|
|
- SDL_SYS_AccelerometerUpdate(joystick);
|
|
|
+ SDL_JoystickDeviceItem *device = joystick->hwdata;
|
|
|
+
|
|
|
+ if (device == NULL) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (device->accelerometer) {
|
|
|
+ SDL_SYS_AccelerometerUpdate(joystick);
|
|
|
+ } else if (device->controller) {
|
|
|
+ SDL_SYS_MFIJoystickUpdate(joystick);
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
/* Function to close a joystick after use */
|
|
|
void
|
|
|
SDL_SYS_JoystickClose(SDL_Joystick * joystick)
|
|
|
{
|
|
|
+ SDL_JoystickDeviceItem *device = joystick->hwdata;
|
|
|
+
|
|
|
+ if (device == NULL) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ device->joystick = NULL;
|
|
|
+
|
|
|
@autoreleasepool {
|
|
|
- [motionManager stopAccelerometerUpdates];
|
|
|
+ if (device->accelerometer) {
|
|
|
+ [motionManager stopAccelerometerUpdates];
|
|
|
+ } else if (device->controller) {
|
|
|
+#ifdef SDL_JOYSTICK_MFI
|
|
|
+ GCController *controller = device->controller;
|
|
|
+ controller.controllerPausedHandler = nil;
|
|
|
+#endif
|
|
|
+ }
|
|
|
}
|
|
|
}
|
|
|
|
|
@@ -174,29 +576,52 @@ void
|
|
|
SDL_SYS_JoystickQuit(void)
|
|
|
{
|
|
|
@autoreleasepool {
|
|
|
+#ifdef SDL_JOYSTICK_MFI
|
|
|
+ NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
|
|
|
+
|
|
|
+ if (connectObserver) {
|
|
|
+ [center removeObserver:connectObserver name:GCControllerDidConnectNotification object:nil];
|
|
|
+ connectObserver = nil;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (disconnectObserver) {
|
|
|
+ [center removeObserver:disconnectObserver name:GCControllerDidDisconnectNotification object:nil];
|
|
|
+ disconnectObserver = nil;
|
|
|
+ }
|
|
|
+#endif /* SDL_JOYSTICK_MFI */
|
|
|
+
|
|
|
+ while (deviceList != NULL) {
|
|
|
+ SDL_SYS_RemoveJoystickDevice(deviceList);
|
|
|
+ }
|
|
|
+
|
|
|
motionManager = nil;
|
|
|
}
|
|
|
|
|
|
numjoysticks = 0;
|
|
|
}
|
|
|
|
|
|
-SDL_JoystickGUID SDL_SYS_JoystickGetDeviceGUID( int device_index )
|
|
|
+SDL_JoystickGUID
|
|
|
+SDL_SYS_JoystickGetDeviceGUID( int device_index )
|
|
|
{
|
|
|
+ SDL_JoystickDeviceItem *device = GetDeviceForIndex(device_index);
|
|
|
SDL_JoystickGUID guid;
|
|
|
- /* the GUID is just the first 16 chars of the name for now */
|
|
|
- const char *name = SDL_SYS_JoystickNameForDeviceIndex( device_index );
|
|
|
- SDL_zero( guid );
|
|
|
- SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
|
|
|
+ if (device) {
|
|
|
+ guid = device->guid;
|
|
|
+ } else {
|
|
|
+ SDL_zero(guid);
|
|
|
+ }
|
|
|
return guid;
|
|
|
}
|
|
|
|
|
|
-SDL_JoystickGUID SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
|
|
|
+SDL_JoystickGUID
|
|
|
+SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
|
|
|
{
|
|
|
SDL_JoystickGUID guid;
|
|
|
- /* the GUID is just the first 16 chars of the name for now */
|
|
|
- const char *name = joystick->name;
|
|
|
- SDL_zero( guid );
|
|
|
- SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
|
|
|
+ if (joystick->hwdata) {
|
|
|
+ guid = joystick->hwdata->guid;
|
|
|
+ } else {
|
|
|
+ SDL_zero(guid);
|
|
|
+ }
|
|
|
return guid;
|
|
|
}
|
|
|
|