# Import the necessary libraries for devices and events
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }

# This is our main "Island" class. Think of it as the map itself.
# Every island needs one of these to hold the logic.
wood_producer_device := class(creative_device):

    # These are our "Components" (devices) attached to the island.
    # We declare them here so Verse knows they exist.
    # Wire each of these up in the UEFN Details panel for this device.
    @editable
    TrackerDevice : tracker_device = tracker_device{}

    @editable
    ItemGranter : item_granter_device = item_granter_device{}

    @editable
    PropManipulator : prop_manipulator_device = prop_manipulator_device{}

    # This is our "Variable" (Health Bar).
    # It stores how many times we've chopped the tree since the last reward.
    # 'var' makes it mutable so we can change it at runtime.
    var ChopsSinceLastWood : int = 0

    # The "OnBegin" function runs once when the island starts.
    # Like the bus flying over the map before you jump.
    OnBegin<override>()<suspends> : void =
        # Show the prop so the tree is visible when the round starts.
        PropManipulator.Enable()

        # Subscribe to the Tracker's CompleteEvent so we hear
        # every time the Tracker increments.
        TrackerDevice.CompleteEvent.Subscribe(OnProgressChanged)

    # This is the "Event Listener."
    # It watches for the CompleteEvent from the Tracker.
    # When the Tracker counts a hit, this function fires.
    # The parameter is the agent whose action caused the change.
    OnProgressChanged(InAgent : agent) : void =
        # Increment our local chop counter (like gaining XP toward a level).
        set ChopsSinceLastWood += 1

        # Check if we've chopped enough times (e.g., 5 chops).
        # This is a Conditional — like checking shield before you heal.
        if (ChopsSinceLastWood >= 5):
            # Reset the counter to 0 (like starting a fresh round).
            set ChopsSinceLastWood = 0

            # Tell the Item Granter to give wood NOW.
            # GrantItemToAll fires the grant for every player on the island.
            ItemGranter.GrantItemToAll()

            # Reset the tree visual: disable it, then enable it again.
            # To the player it looks like the tree just respawned.
            PropManipulator.Disable()
            PropManipulator.Enable()