using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }
using { /UnrealEngine.com/Temporary/SpatialMath }

# This is our blueprint for any moving object.
# It is abstract, so we cannot use it directly.
movable_prop<public> := class<abstract>():
    # This is the object we will move.
    # It is a "creative_prop" in Fortnite terms.
    # Wire your placed prop to this slot in the Verse Device details panel.
    Prop<public>: creative_prop = creative_prop{}

    # This is where we start moving.
    Start_Position<public>: vector3 = vector3{X := 0.0, Y := 0.0, Z := 0.0}

    # This is where we want to go.
    End_Position<public>: vector3 = vector3{X := 0.0, Y := 0.0, Z := 0.0}

# This is the specific type of moving object.
# It inherits from movable_prop.
# It knows how to translate (slide).
translating_prop<public> := class<concrete>(movable_prop):

    # This function runs once when the game starts.
    # It sets up the platform.
    OnBegin<override>()<suspends>: void =
        # Start the movement loop on its own thread
        # so it does not block the rest of the level.
        spawn { Start_Movement() }

    # This function makes the prop slide.
    Start_Movement()<suspends>: void =
        # We use a loop to keep moving forever.
        # A loop repeats code again and again.
        loop:
            # Move to the end position.
            # MoveToTranslation slides the prop smoothly over a given time (in seconds).
            Prop.MoveTo(End_Position, MakeRotation(vector3{X:=0.0,Y:=0.0,Z:=1.0}, 0.0), 1.0)
            # Wait one second before moving back.
            Sleep(1.0)

            # Move back to the start position.
            Prop.MoveTo(Start_Position, MakeRotation(vector3{X:=0.0,Y:=0.0,Z:=1.0}, 0.0), 1.0)
            # Wait one second before moving forward again.
            Sleep(1.0)