# Import the Verse standard modules we need
using { /Verse.org/Simulation }
using { /Verse.org/Random }
using { /Fortnite.com/Devices }
using { /UnrealEngine.com/Temporary/Diagnostics }

# Define our creative device class.
# A creative_device is the standard base for all Verse-powered island devices.
loot_box_device := class(creative_device) {

    # We need to reference our devices.
    # These are "Properties" – variables that hold references to devices in the level.
    # You will set these in the Verse Device's properties panel in the editor.
    @editable
    LootBoxTrigger : trigger_device = trigger_device{}

    @editable
    ShieldGranter : item_granter_device = item_granter_device{}

    @editable
    BandageGranter : item_granter_device = item_granter_device{}

    # This function picks the loot and gives it.
    GiveRandomLoot(Agent : agent) : void =
        # Roll the die: 0 or 1
        Roll := GetRandomInt(0, 1)

        # Use an if/else to pick which granter to use based on Roll,
        # then grant the item to the agent.
        if (Roll = 0):
            ShieldGranter.GrantItem(Agent)
        else:
            BandageGranter.GrantItem(Agent)

    # OnBegin runs automatically when the game session starts.
    # We subscribe to the trigger's TriggeredEvent here so the device
    # calls GiveRandomLoot whenever a player steps on the trigger.
    OnBegin<override>() : void =
        # Subscribe to the trigger's TriggeredEvent.
        # The lambda receives the optional agent who activated the trigger.
        LootBoxTrigger.TriggeredEvent.Subscribe(OnTriggered)

    # Handler called by the trigger subscription.
    # Agent is ?agent because triggers fire with an optional agent.
    OnTriggered(MaybeAgent : ?agent) : void =
        # Unwrap the optional agent before passing it to GiveRandomLoot.
        if (Agent := MaybeAgent?):
            GiveRandomLoot(Agent)
}