The runtime shell (joy-app) supplies InputManager (joy-input) through frame.input. Keyboard bindings use KeyboardEvent.code names, gamepads use the standard W3C mapping, and native gamepads use gilrs. Games consume the same actions and axes across targets.
Read pressed(name) for discrete actions each frame. Actions combine their bindings; axes choose the stronger digital or rescaled analog value. The default analog dead zone is 0.15. set_contexts selects active action contexts, and rebind changes bindings without changing game rules.
Focus loss, hidden windows, and egui text entry release gameplay input. Gamepads must return to neutral before reactivating. Touch input exposes individual points and stable finger IDs so simultaneous controls can track different touches. Touches also hold the primary pointer button.
Use Frame::set_pointer_lock(true) for mouse steering; browsers require a user gesture. pointer_motion reports raw frame movement in logical pixels while locked, and pointer_locked reports current ownership. The platform can release the lock at any time. Games own coordinate projection, on-screen control layout, and mapping actions into gameplay intent.