Binding to Scene events in Snapchat Lens Studio

EventBindingExample.js

// -----JS CODE-----

/**
 * UpdateEvent, fires every frame
 * @param {UpdateEvent} ev 
 */
// Callback for the UpdateEvent
function onUpdate(ev) {
  print(getDeltaTime());
}

// Binding our callback to the UpdateEvent
var updateEvent = script.createEvent("UpdateEvent");
updateEvent.bind(onUpdate);

/**
 * BrowsRaisedEvent, triggered when the user's brows change to raised. 
 * Lens Studio does all of this detection for us, we just listen for the event. 
 * @param {BrowsRaisedEvent} ev 
 */
// Callback for the BrowsRaisedEvent
function onBrowsRaised(ev) {
  print("My, what high brows you have!");
}

// Binding our callback to the BrowsRaisedEvent
var browsRaisedEvent = script.createEvent("BrowsRaisedEvent");
browsRaisedEvent.bind(onBrowsRaised);