On-screen joystick(s) for iOS and iPadOS using Metal?

Question

Created Aug ’23

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Hey all. I took a look at a video that caught my attention(https://developer.apple.com/videos/play/wwdc2021/10081) and wish to use this for my ios and iPad game. However, the language used here is swift, and want to use either objective-c or c++. Did anyone here used this method shown is this video but without swift?

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Answer 1

Frameworks Engineer OP

Apple

Aug ’23

Hi CuriousAsking123

The GCVirtualController class is available from Objective-C. Here is a code snippet showing how to set it up.

 #import <GameController/GameController.h>
 
// Assumes your class declares an instance variable named '_virtualController' with type GCVirtualController*
 
        GCVirtualControllerConfiguration *configuration = [GCVirtualControllerConfiguration new];
        configuration.elements = [NSSet setWithArray:@[
            GCInputButtonA,
            GCInputButtonB,
            GCInputButtonX,
            GCInputButtonY,
            GCInputLeftShoulder,
            GCInputLeftTrigger,
            GCInputRightShoulder,
            GCInputRightTrigger,
            GCInputDirectionPad,
            GCInputRightThumbstick
        ]];
        
        _virtualController = [GCVirtualController virtualControllerWithConfiguration:configuration];
        [_virtualController connectWithReplyHandler:^(NSError *error) {
            if (error) { NSLog(@"%@", error); }
        }];

0

	#import <GameController/GameController.h>

	// Assumes your class declares an instance variable named '_virtualController' with type GCVirtualController*

	GCVirtualControllerConfiguration *configuration = [GCVirtualControllerConfiguration new];
	configuration.elements = [NSSet setWithArray:@[
	GCInputButtonA,
	GCInputButtonB,
	GCInputButtonX,
	GCInputButtonY,
	GCInputLeftShoulder,
	GCInputLeftTrigger,
	GCInputRightShoulder,
	GCInputRightTrigger,
	GCInputDirectionPad,
	GCInputRightThumbstick
	]];

	_virtualController = [GCVirtualController virtualControllerWithConfiguration:configuration];
	[_virtualController connectWithReplyHandler:^(NSError *error) {
	if (error) { NSLog(@"%@", error); }
	}];