method
Input.poll
Input.poll() -> int
Advances the input by one frame and returns the frame's key. Call it once at the top of a frame; the action reads (Input.down, Input.pressed) then report on the key it captured. It is the single place input crosses into the frame, which is what makes recording and replay possible: in record mode it saves the live key, and in replay mode it takes the next key from the tape instead of the device — so "read input" and "read a recorded snapshot" are the same call.
Example
program Poll {
entry {
Input.bind("up", 'w')
Input.poll()
if Input.down("up") { print(1) }
}
}