Function add_listener

add_listener(
    obj: GameObject,
    event: string,
    callback: Function,
): GameObject | undefined
Attach a listener to the object. The callback will be executed when the event is emitted. Mutate the object.

For all available events, see: https://photonstorm.github.io/phaser3-docs/Phaser.Input.Events.html
Parameters
- obj: GameObject
  object to be added to
- event: string
  the event name
- callback: Function
  listener function, executed on event
Returns GameObject | undefined
listener game object