key_is_down is treated as an event handler, but should just be a callable function

[JohnEdChristensen]

The Sketch constructor can take key_is_down as an event handler, but in p5js, keyIsDown is a function that takes a keyCode as a parameter, and returns true or false depending if it is currently pressed.

Documentation:

• https://p5js.org/reference/#/p5/keyIsDown

Function source:

• https://github.com/processing/p5.js/blob/faf5252a47befaf92fbc8b8afbe5ec0d964097c5/src/events/keyboard.js#L372

processo should just pass this call along to p5js.

Example sketch that does not work:
https://pyscript.com/@johnc14231/proceso-starter-copy-37941/latest

from proceso import Sketch


p5 = Sketch()
p5.describe("A pink circle can moves using 'wasd' or arrow keys.")


def setup():
    p5.create_canvas(400, 400)
    p5.background("cornflowerblue")


x = y = 0


def draw():
    global x, y
    p5.background("cornflowerblue")
    p5.translate(p5.width * 0.5, p5.height * 0.5)
    p5.stroke("white")
    p5.fill("deeppink")
    speed = 5
    if p5.key_is_down(87) or p5.key_is_down(p5.UP_ARROW):  # 'W' key
        y -= speed
    if p5.key_is_down(83) or p5.key_is_down(p5.DOWN_ARROW):  # 'S' key
        y += speed
    if p5.key_is_down(65) or p5.key_is_down(p5.LEFT_ARROW):  # 'A' key
        x -= speed
    if p5.key_is_down(68) or p5.key_is_down(p5.RIGHT_ARROW):  # 'D' key
        x += speed
    p5.circle(x, y, 20)


p5.run_sketch(setup=setup, draw=draw)