ReadonlyactionsReadonlygamepadsAlways length 4 (standard web gamepad slot count). Disconnected slots return connected: false.
ReadonlykeyboardReadonlypointerReturns a handle to a registered player's input, or undefined if no such player.
Returns true if the player existed and was removed.
Unified action state — fires when any bound input (keyboard, pointer, any pad) is active. Intended for menu/shared input.