# This is our main script
# It connects to the Prop we placed
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }
using { /UnrealEngine.com/Temporary/SpatialMath }

# We create a special device for our code
# creative_device is the real base class for island scripts
my_moving_prop := class(creative_device):

    # This is the prop we want to move
    # It is like a named slot for the object
    # Mark it @editable so you can assign it in the UEFN details panel
    @editable
    Prop : creative_prop = creative_prop{}

    # This is a variable for speed
    # Variables can change their value
    var Speed : float = 2.0

    # This function starts the action
    # It runs once when the game begins
    OnBegin<override>()<suspends> : void =
        # We enter a loop here
        # A loop repeats code forever
        loop:
            # Get the current time in seconds
            # Time is always moving forward
            CurrentTime := GetSimulationElapsedTime()

            # Calculate the height using a Sine Wave
            # Sin() makes a smooth up-and-down curve
            # We multiply by Speed to change how fast it waves
            Height := Sin(CurrentTime * Speed) * 200.0

            # Get the prop's current spot
            CurrentTransform := Prop.GetTransform()
            CurrentLocation := CurrentTransform.Translation

            # Create a new location
            # We keep left-right and forward-back the same
            # We only change the up-down part (Z)
            NewLocation := vector3{X := CurrentLocation.X, Y := CurrentLocation.Y, Z := CurrentLocation.Z + Height}

            # Move the prop to the new spot
            # This happens every frame!
            # TeleportTo is the real API for repositioning a creative_prop
            if (Prop.TeleportTo[NewLocation, CurrentTransform.Rotation]):
                false

            # Wait a tiny bit before the next move
            # This keeps the game smooth
            Sleep(1.0 / 60.0)