Event Observer

Event Observer is an asset that is typically used in a Game UI overlay to watch and respond to game events and user actions by loading another World or displaying another UI screen.

It is located in the Logic section of the Asset panel in the UI node workspace. For details on adding an Event Observer to the UI, see Add Event Observer. For attribute details, see the table below.

There’s also an Event Observer node that you can add to individual assets in the game.

Event Observer Attributes

When you select the Event Observer in the UI Editor, its attributes appear in the Options panel on the right.

Option Description
Name Enter a custom name for the Event Observer that reflects the type of events that would trigger its response, for example, Game Over.

This name will be displayed in the Outliner and on the output in the corresponding UI node on the Mind Map.
Position Enter a numeric value for each axis to specify the location of the Event Observer icon.

Alternatively, drag the icon directly in the UI Editor and position it in the desired location, typically outside the UI screen.
Event Type Select an event that should trigger a response from the Event Observer:

Game Over The player’s game session is over.
Session Points The player has collected the required number of points during the session.
Session Coins The player has collected the required number of coins during the session.
Total Points The player has collected the required total number of points throughout the game.
Best Points The player has collected the required number of best points.
Best Coins The player has collected the required number of best coins.
Last Scene The player has reached the last scene in the current World.
Redirect Moves the user to another World or UI based after the user plays the current UI the number of times specified in the Plays Before Redirect field below.
Request Review Requests a game review on mobile devices after the user plays the current UI the number of times specified in the Plays Before Redirect field below.
Time Out The player has been inactive during a game session for a specified period of time.
Make sure to connect the Event Observer to the appropriate World or UI on the Mind Map.
Session Total This field appears if an event having to do with points or coins is selected in the Event Type field.

Enter the number of points or coins that the player must collect to trigger the Event Observer.
Plays Before Redirect Enter the number of times the player can play before being redirected to the next UI or World or presented with a game review request. See the Redirect and Request Review options in the Event Type list above.
Time Enter the time (in seconds) of inactivity during the game after which the Time Out event is triggered.
Function Select how the new World or UI screen should be loaded when the selected event occurs and the Event observer is triggered:

  • Default—load World or UI at the beginning.
  • Start Checkpoint—load World at the point where a player may restart if their character is killed or they lose the game.
Pause Current World Select to pause the current world when the selected event occurs and the Event Observer is triggered.

Make sure to provide a button or another option in the UI to let the user resume the game.