# This script lives on the Island. It finds our devices and listens for triggers.
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }

MoodSwitcher_Script := class(creative_device):

    # 1. Define the devices we want to control.
    # Think of these as "handles" to the devices in your level.
    # Decorate with @editable so they appear as linkable fields in the UEFN Details panel.
    @editable
    Instrument_Player : instrument_player_device = instrument_player_device{}

    @editable
    Trigger : trigger_device = trigger_device{}

    # 2. This function runs when the game starts.
    # It's like the "Game Start" event in the device menu, but with more power.
    OnBegin<override>()<suspends> : void =
        # 3. Listen for the trigger being activated.
        # When the player hits the trigger, this code runs.
        Trigger.TriggeredEvent.Subscribe(OnTriggered)

    # 4. This function is called whenever the Trigger fires.
    OnTriggered(Agent : agent) : void =
        # 5. Change the instrument!
        # PlayInstrument tells the Instrument Player device to activate.
        # Instrument selection is configured in the device's Details panel in the editor;
        # use the device's Play function to start it from Verse.
        # note: instrument_player_device exposes Play/Stop but not a runtime string-based
        # SetInstrument API; swap the active instrument by configuring the device property
        # in the UEFN Details panel and calling Play here.
        Instrument_Player.Play()

        # Optional: Print a message to the output log so you know it happened.
        Print("Mood switched — Instrument Player triggered!")