Pressure Pad Door

Before this: Reacting to the Game, Waiting

Step on a pad and the door in front of you opens. It stays open while anyone stands on the pad, and for a few seconds after the last player steps off.

You need
Code
Wire it
Check it in game
Change it
How it works

You need

a brick with a Touch component, as the pad
a door: a few bricks, one of them with a Brick Property Changer

touch Touching -> chip pad
touch Character -> chip stepper
chip solid -> changer "Collision Enabled"
chip solid -> changer Visibility

Code

// Seconds the door stays open after the last player steps off.
const STAY_OPEN = 3.0
// What a player sees when they step on the pad.
const MESSAGE = "The door is open while you stand here"

@left in pad: bool
@left in stepper: character
@right out solid = !Sleep(pad, delay = 0.0, hold = STAY_OPEN)

on pad {
  stepper.ShowStatusMessage(MESSAGE)
}

Wire it

Compile the chip and paste it in-game next to the door. Place the pad brick with the Touch where players walk up to the door.
Wire the Touch’s Touching to pad and its Character to stepper.
Wire solid to the Brick Property Changer’s Collision Enabled and Visibility inputs.

Check it in game

Before anyone steps on the pad: the door is there and you cannot walk through it.
Step on the pad: the door vanishes at once, and a status message tells you the door is open.
Stand on the pad for ten seconds: the door stays open the whole time.
Step off: about three seconds later the door is back.
Step off and back on within three seconds: the door never closes.

Change it

Change STAY_OPEN for a longer or shorter wait. 0.0 closes the door the moment the pad is free.
Light the pad while someone stands on it: add @right out lit = pad and wire it to a Point Light’s Enabled.
Put two pads on either side of the door and open it from both: add @left in pad2: bool and use Sleep(pad || pad2, ...).

Sleep(pad, delay = 0.0, hold = STAY_OPEN) is one Buffer (Seconds) gate. Its output follows pad after delay seconds and, once pad turns off, holds on for another hold seconds. Outside an await it is a steady signal, not a step, so the door needs no handler at all (Pure and Exec). The handler only sends the message: on pad fires once when the pad turns on, and ShowStatusMessage shows a line only that player sees (Reacting to the Game). Waiting has the same gate inside an await, and the Proximity Door opens the same way from a zone instead of a pad.

Wirescript