Note Trigger | Fortnite Creative Documentation

The Note Trigger (N-TRG) device is a musical version of the Trigger device. It receives note input, and you can specify which notes will send events to other Fortnite Creative devices.

For example, you could patch the Note Trigger to a Drum Sequencer, then bind it to a Creature Spawner that spawns a new creature on the beat, or patch it to a Note Sequencer to trigger some barrels to explode every time C♯ is played.

Device Options

Option	Values	Description
1. Enabled Switch	On, Off	Note data is always passed through this device unchanged. When Disabled, note data is passed through unchanged and no Events are sent.
2. Expand Buttons	Closed, Open	Expand the device to reveal more customization options.
3. Note Out Cable	N/A	The Note Out cable needs to be connected to a yellow Note In port.
4. Octave Carousel	All, 0-6	Select whether the device should be triggered by notes in any octave or in a specific octave.
5. Drum Note Shape Label	Shapes	When patching the Patchwork Drum Sequencer into the Note Trigger, these labels indicate which drum note shapes on the Drum Sequencer correspond to which notes.
6. Note Select Button	Any number of notes. Default: No Notes	Users can select each button and toggle it to be active/inactive. When a note is set to its active state, the device will send a message when it receives that note as input.
7. Note In Port	N/A	Can only receive a yellow Note In cable.

Device Options in the Customize Panel

In Create mode, walk up to the device and press E to open the Customize panel. Some device options mirror the controls you can manipulate with the Patchwork tool. They are present so that you can use the event binding system to trigger changes to how those controls behave, although you can choose to change them here instead of using the knobs. You can also modify the options below using the Details panel in UEFN.

Option	Values	Description
Allow Cable Access	On, Off	Determines if the Patchwork Tool can access any cable input or output ports on the device.
Enabled on Phase	None, Always, Pre-Game Only, Gameplay Only	Determines the game phases during which the device will be enabled. Pre-Game includes all phases prior to the game starting.

VFX Preview

The VFX preview for the Note Sequencer shows when an input triggers an event.

Direct Event Binding System

Direct event binding allows devices to communicate directly, which makes your workflow more intuitive, and gives you more freedom to focus on your design ideas.

Below are the functions and events for this device:

Functions

A function listens for an event on a device then performs an action.

For any function, click the option, then Select Device to access and select from the Device dropdown menu.
Once you've selected a device, click Select Event and select the event that triggers this function.
If more than one device or event triggers a function, press the Add button to add a line and repeat these steps.

Option	Description
Enable When Receiving From	The device is enabled when an event occurs.
Disable When Receiving From	The device is disabled when an event occurs.

Events

Direct event binding uses events as transmitters. An event tells another device to perform a function.

For any event option, click the option, then Select Device to access and select from the Device dropdown menu.
Once you've selected a device, click Select Function to bind the event to a function for that device.
If more than one function is triggered by the event, press the Add button and repeat.

Option	Description
On Enabled Send Event To	When this device is enabled, an event is sent to the linked device.
On Disabled Send Event To	When this device is disabled, an event is sent to the linked device.
When Note On Received Transmit On	Sends an event when a selected note input begins playing.
When Note Off Received Transmit On	Sends an event when a selected note input stops playing. This occurs after any sustain applied to the note.

Using Note Trigger in Verse

You can use the code below to control a Note Trigger device in Verse. This code uses all features of the Note Trigger device API. Modify it to fit the needs of your experience.


using { /Fortnite.com/Devices }

using { /Verse.org/Simulation }

using { /UnrealEngine.com/Temporary/Diagnostics }

# A Verse-authored creative device that can be placed in a level

note_trigger_example := class(creative_device):

    @editable

    NoteTrigger:patchwork_note_trigger_device = patchwork_note_trigger_device{}

    # Runs when the device is started in a running game

    OnBegin<override>()<suspends>:void=

        

        Sleep(5.0)

        NoteTrigger.Disable()

        Print("Device Disabled")

        Sleep(5.0)

        NoteTrigger.Enable()

        Print("Device Enabled")

To use this code in your UEFN experience, follow these steps.

Drag a Note Trigger device onto your island.
Create a new Verse device named note_trigger_example. To learn how to create a new device in Verse, see Create Your Own Device Using Verse.
Open Verse Explorer and double-click note_trigger_example.verse to open the script in Visual Studio Code.
Paste in the code above, compile, and drag the Verse-authored device onto your island.
Select your Verse device in the Outliner.
In the device's Details panel, assign the object reference for the Note Trigger to the Note Trigger device on your island. You can use the eyedropper to pick the device in the viewport, or use the dropdown and search for the device.
Save your project and click Launch Session.

Note Trigger API

See the note_trigger_device API Reference for more information on using the Note Trigger device in Verse.

Patch Ideas

Try patching the Note Sequencer to the Note Trigger to control when the triggers are activated.

Try patching the Note Trigger device to these audio generators!