input

Define actions with defineInputActions or a .input.json asset, binding paths like <Keyboard>/w or <Gamepad>/leftStick to typed actions. Register the input extension in createApp and read actions with app.input.actions.get(name) inside update.

Call app.input.performInteractiveRebind(action, options) to listen for the next control and write an override, then persist it with app.input.saveOverrides(). Overrides are addressed by binding index, so reordering bindings invalidates saved overrides with error IGX-0808.

Yes, input is DOM-only with no Babylon Lite dependency, so it runs identically under the null engine with createApp({ headless: true }). Tests drive the game through the same pipeline using app.input.simulate(values) or simulateEvent.

actions.get searches only enabled maps, so an action in a disabled map throws IGX-0801 instead of reading as released. Reach it through actions.map(name).get(name) or actions.find(name), or set action.enabled = false to keep a live handle working.

Bind <Mouse>/delta to a look action and call app.input.pointerLock.request() from a click handler, since browsers require a user gesture. Scale deltas by about 0.08-0.15 degrees per pixel, and read action.activeDevice to handle gamepad sticks differently.

Browsers hide gamepads from navigator.getGamepads() until a button is pressed, so gamepads[0].isConnected starts false. Listen to app.input.onDeviceConnected to react when a pad slot fills.