Apple Makes New On-Screen Game Controller Available to Developers on iOS 15 and iPadOS 15
During the Platforms State of the Union at WWDC this week, Apple unveiled a new API for iOS 15 and iPadOS 15 that enables developers to implement an on-screen virtual game controller in their iPhone and iPad games with just a few lines of code.

While many iPhone and iPad games already offer on-screen controls, Apple's new virtual game controller is available to all developers, easy to add, and can be customized on a per-game basis. Apple said the on-screen controller can be adjusted to a variety of layouts, with up to four buttons and a thumbstick, d-pad, or touchpad available per left and right side.
"These new on-screen controls for iPhone and iPad look amazing, and they're carefully tuned for grip locations across hand sizes and for a great responsiveness and feel," said Nat Brown, an Apple engineer working on Game Technologies.
Apple offers a WWDC session and developer documentation with more details.
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