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Added support for the Rotor Riot gamepad, and upcoming Xbox and PS4 controller support on iOS and tvOS

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Patch contributed by Nat Brown
This commit is contained in:
Sam Lantinga
2019-06-06 08:20:53 -07:00
parent 6c0b304c93
commit 20ec866484
2 changed files with 93 additions and 14 deletions
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103
src/joystick/iphoneos/SDL_sysjoystick.m
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@@ -48,6 +48,35 @@
static id connectObserver = nil;
static id disconnectObserver = nil;
#include <Availability.h>
#include <objc/message.h>
// remove compilation warnings for strict builds by defining these selectors, even though
// they are only ever used indirectly through objc_msgSend
@interface GCExtendedGamepad (SDL)
#if (__IPHONE_OS_VERSION_MAX_ALLOWED < 130000) || (__MAC_OS_VERSION_MAX_ALLOWED < 1500000)
@property (nonatomic, readonly) GCControllerButtonInput *buttonMenu;
@property (nonatomic, readonly, nullable) GCControllerButtonInput *buttonOptions;
#endif
#if (__IPHONE_OS_VERSION_MAX_ALLOWED < 121000) || (__MAC_OS_VERSION_MAX_ALLOWED < 1401000)
@property (nonatomic, readonly, nullable) GCControllerButtonInput *leftThumbstickButton;
@property (nonatomic, readonly, nullable) GCControllerButtonInput *rightThumbstickButton;
#endif
@end
#define BUTTON_INDEX_A 0
#define BUTTON_INDEX_B 1
#define BUTTON_INDEX_X 2
#define BUTTON_INDEX_Y 3
#define BUTTON_INDEX_LEFT_SHOULDER 4
#define BUTTON_INDEX_RIGHT_SHOULDER 5
#define BUTTON_INDEX_GUIDE 6
#define BUTTON_INDEX_LEFT_THUMBSTICK 7
#define BUTTON_INDEX_RIGHT_THUMBSTICK 8
#define BUTTON_INDEX_START 9
#define BUTTON_INDEX_BACK 10
#endif /* SDL_JOYSTICK_MFI */
#if !TARGET_OS_TV
@@ -82,6 +111,8 @@ IOS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCController *controlle
{
#ifdef SDL_JOYSTICK_MFI
const Uint16 VENDOR_APPLE = 0x05AC;
const Uint16 VENDOR_MICROSOFT = 0x045e;
const Uint16 VENDOR_SONY = 0x054C;
Uint16 *guid16 = (Uint16 *)device->guid.data;
Uint16 vendor = 0;
Uint16 product = 0;
@@ -104,12 +135,45 @@ IOS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCController *controlle
device->name = SDL_strdup(name);
if (controller.extendedGamepad) {
vendor = VENDOR_APPLE;
product = 1;
subtype = 1;
int nbuttons = 7; /* ABXY, shoulder buttons, pause button */
if ([controller.extendedGamepad respondsToSelector:@selector(buttonMenu)]
&& ((id (*)(id, SEL))objc_msgSend)(controller.extendedGamepad, @selector(buttonMenu))) {
// if we see .buttonMenu, then .buttonOption, .leftThumbstickButton (L3) & .rightThumbstickButton (R3)
// also exist (ios13+, macOS10.15+), though some may be nil, hold a spot for them
nbuttons = 11;
} else if ([controller.extendedGamepad respondsToSelector:@selector(leftThumbstickButton)]
&& ((id (*)(id, SEL))objc_msgSend)(controller.extendedGamepad, @selector(leftThumbstickButton))) {
// if we didn't see .buttonMenu but do see .leftThumbstickButton (L3), then .rightThumbstickButton (R3)
// also exists (ios12.1+, macos10.14.1+). unlikely for R3 to be nil if L3 is not, but update code
// will never report a button change for R3 even so
nbuttons = 9;
}
if ([controller.vendorName containsString: @"Xbox"]) {
vendor = VENDOR_MICROSOFT;
product = 0x02E0; // assume Xbox One S BLE Controller unless/until GCController flows VID/PID
} else if ([controller.vendorName containsString: @"DUALSHOCK"]) {
vendor = VENDOR_SONY;
product = 0x09CC; // assume DS4 Slim unless/until GCController flows VID/PID
} else if (nbuttons == 9) {
// unknown MFi controller with L3/R3 buttons (e.g. Rotor Riot)
vendor = VENDOR_APPLE;
product = 4;
subtype = 4;
} else if (nbuttons == 11) {
// unkonwn MFi controller with L3/R3 and menu/options buttons (no known instances, future proofing)
vendor = VENDOR_APPLE;
product = 5;
subtype = 5;
} else {
vendor = VENDOR_APPLE;
product = 1;
subtype = 1;
}
device->naxes = 6; /* 2 thumbsticks and 2 triggers */
device->nhats = 1; /* d-pad */
device->nbuttons = 7; /* ABXY, shoulder buttons, pause button */
device->nbuttons = nbuttons;
} else if (controller.gamepad) {
vendor = VENDOR_APPLE;
product = 2;
@@ -525,13 +589,25 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
};
/* Button order matches the XInput Windows mappings. */
Uint8 buttons[] = {
gamepad.buttonA.isPressed, gamepad.buttonB.isPressed,
gamepad.buttonX.isPressed, gamepad.buttonY.isPressed,
gamepad.leftShoulder.isPressed,
gamepad.rightShoulder.isPressed,
joystick->delayed_guide_button,
};
Uint8 buttons[joystick->nbuttons];
buttons[BUTTON_INDEX_A] = gamepad.buttonA.isPressed;
buttons[BUTTON_INDEX_B] = gamepad.buttonB.isPressed;
buttons[BUTTON_INDEX_X] = gamepad.buttonX.isPressed;
buttons[BUTTON_INDEX_Y] = gamepad.buttonY.isPressed;
buttons[BUTTON_INDEX_LEFT_SHOULDER] = gamepad.leftShoulder.isPressed;
buttons[BUTTON_INDEX_RIGHT_SHOULDER] = gamepad.rightShoulder.isPressed;
buttons[BUTTON_INDEX_GUIDE] = joystick->delayed_guide_button;
// previously checked for availability of these iOS12.1+/macOS10.14.1+ or iOS13+/macOS10.15+
// selectors. they exist but may be nil, in which case objc_msgSend will return 0/false for isPressed
if (joystick->nbuttons > 8) {
buttons[BUTTON_INDEX_LEFT_THUMBSTICK] = ((Uint8 (*)(id, SEL))objc_msgSend)( ((id (*)(id, SEL))objc_msgSend)(gamepad, @selector(leftThumbstickButton)), @selector(isPressed) );
buttons[BUTTON_INDEX_RIGHT_THUMBSTICK] = ((Uint8 (*)(id, SEL))objc_msgSend)( ((id (*)(id, SEL))objc_msgSend)(gamepad, @selector(rightThumbstickButton)), @selector(isPressed) );
}
if (joystick->nbuttons > 10) {
buttons[BUTTON_INDEX_START] = ((Uint8 (*)(id, SEL))objc_msgSend)( ((id (*)(id, SEL))objc_msgSend)(gamepad, @selector(buttonMenu)), @selector(isPressed) );
buttons[BUTTON_INDEX_BACK] = ((Uint8 (*)(id, SEL))objc_msgSend)( ((id (*)(id, SEL))objc_msgSend)(gamepad, @selector(buttonOptions)), @selector(isPressed) );
}
hatstate = IOS_MFIJoystickHatStateForDPad(gamepad.dpad);
@@ -601,9 +677,8 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
}
for (i = 0; i < joystick->hwdata->num_pause_presses; i++) {
const Uint8 pausebutton = joystick->nbuttons - 1; /* The pause button is always last. */
SDL_PrivateJoystickButton(joystick, pausebutton, SDL_PRESSED);
SDL_PrivateJoystickButton(joystick, pausebutton, SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, BUTTON_INDEX_GUIDE, SDL_PRESSED);
SDL_PrivateJoystickButton(joystick, BUTTON_INDEX_GUIDE, SDL_RELEASED);
updateplayerindex = YES;
}
joystick->hwdata->num_pause_presses = 0;