# This is a comment. Verse ignores lines starting with #.
# We're making a simple Day/Night switch.

# 1. Define our Script. In UEFN, Verse logic lives inside a creative_device class.
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }

# mood_sky_script is the container for our logic.
# It inherits from creative_device so UEFN recognises it as a placeable script device.
mood_sky_script := class(creative_device):

    # 2. Variables: These are our "state trackers."
    # CurrentMood is a boolean (true/false).
    # Think of it like a light switch: On or Off.
    # 'var' makes it mutable so we can toggle it later.
    var CurrentMood : logic = true

    # Reference to the skydome device placed on the island.
    # Wire this up in the UEFN Details panel after placing the script device.
    # skydome_device exposes EnableDayPhase / DisableDayPhase and
    # fog controls we call below.
    MoodSwitch : button_device = button_device{}
    SkyDome    : sky_dome_device = sky_dome_device{}

    # OnBegin runs automatically when the game session starts.
    # We use it to subscribe to the button's InteractedWithEvent.
    OnBegin<override>()<suspends> : void =
        # Connect the button's event to our handler function.
        # Every time a player presses MoodSwitch, ChangeSkyMood fires.
        MoodSwitch.InteractedWithEvent.Subscribe(OnButtonPressed)

    # 3. Event handler: called by the Subscribe above.
    # Agent is the player who pressed the button (required by the event signature).
    OnButtonPressed(Agent : agent) : void =
        ChangeSkyMood()

    # 4. Function: This is our "Combo Move."
    # It reads CurrentMood and applies the matching sky preset,
    # then toggles the variable so the next press flips to the other state.
    ChangeSkyMood() : void =
        if (CurrentMood?):
            # --- DAYTIME preset ---
            # Re-enable the normal day phase on the skydome device.
            # note: sky_dome_device is the real UEFN device; tweak its
            # Day/Night settings in the Details panel for exact colours.
            SkyDome.EnableDayPhase()
            Print("Sky set to: DAY")
        else:
            # --- NIGHTTIME preset ---
            # Switch the skydome to its night phase.
            SkyDome.DisableDayPhase()
            Print("Sky set to: NIGHT")

        # 5. Toggle the variable for next time.
        # 'not' is the Verse boolean negation operator.
        # If it was true, make it false. If false, make it true.
        set CurrentMood = not CurrentMood