01 Fragment

# This is a simple script for a button and a wall

# 1. Define our devices
# We create "slots" for our devices.
# Think of these as empty boxes waiting for devices.
device Button: ButtonDevice = device()
device Wall: PropMoverDevice = device()

# 2. The main function
# This is the brain of our script.
# It runs when the game starts.
@main
function OnGameStart(): void =
    # 3. Connect the devices
    # We tell the script which device is which.
    # In UEFN, you will patch these in the editor.
    Button = Patch[ButtonDevice]("MyButton")
    Wall = Patch[PropMoverDevice]("MyWall")

    # 4. Listen for an event
    # We wait for the button to be pressed.
    # This is called an "Event".
    Button.Pressed += func():
        # 5. Do something!
        # When the button is pressed, change the wall.
        Wall.SetColor(Color.GREEN)