Triggers

Triggers are used to fire Actions and Conditions when something happens. This something can range from the player pressing a certain key to an NPC's entering a certain area.

(Example of a Trigger with the Input options open)

Triggers are executed from top to bottom.

Advanced Options

The white cog at the top right of the component there's an Advanced Options foldout. You can specify a minimum distance from which the Player has to be for this trigger to be activated.

This is specially useful when dealing with pickup items or interactive doors.

There's also a shortcut option to create a Hotspot component from within the Trigger.

Tips

Some times you'll want a Trigger to execute an Action only once. You can easily take advantage of an Action's DestroyAfterFinishing property to destroy both the Action and the Trigger.

To do so, simply add an Actions component inside the same Game Object where the Trigger is. After executing the Actions, it will destroy the entire Game Object.

Available Triggers

These are all the Triggers that come with Game Creator. You can download more at the Game Creator Hub, creating your own using our Open API as well as find more inside each of the modules.

Input

Trigger Name	Description
On Cursor Raycast	When the cursor is locked at the center of the screen, use this Trigger to throw a raycast from the center of the screen to simulate a click
On Hover Hold Key	Detects when the mouse is over the Trigger's Collider and the user holds a key for a certain amount of time
On Hover Press Key	Detects when the mouse is over the Trigger's Collider and the user presses a key
On Key Down	Detects when the user presses a key down
On Key Hold	Detects when the user presses a key down and holds it for a certain amount of time
On Key Up	Detects when the user releases a key
On Mouse Down	Detects when the user presses a mouse button down
On Mouse Enter	Detects when the mouse hovers over the Trigger's Collider
On Mouse Exit	Detects when the mouse exits hovering the Trigger's Collider
On Mouse Left Hold	Detects when the mouse left button is being pressed for a certain amount of time
On Mouse Middle Hold	Detects when the mouse middle button is being pressed for a certain amount of time
On Mouse Right Hold	Detects when the mouse right button is being pressed for a certain amount of time
On Mouse Left Click	Detects when the mouse left clicks on the Trigger's Collider
On Mouse Middle Click	Detects when the mouse middle clicks on the Trigger's Collider
On Mouse Right Click	Detects when the mouse right clicks on the Trigger's Collider
On Mouse Up	Detects when a mouse button is released
Raycast Mouse World Position	Detects when the mouse has clicked the Trigger's Collider and stores the point in a Variable

Character

Trigger Name	Description
On Step	Detects when a Character makes a step (right foot, left foot or any of them)
On Jump	Detects when a Character jumps
On Land	Detects when a Character lands

Object

Trigger Name	Description
On Collision Enter	Detects when an object touches the Trigger's Collider area
On Collision Exit	Detects when an object exits the Trigger's Collider area
On Player Enter	Detects when the Player enters the Trigger's Collider area
On Player Enter Key	Detects when the user presses a key and the Player is within the Trigger's Collider area
On Player Exit	Detects when the Player exits the Trigger's Collider area
On Player Stay Timeout	Detects when the Player has been at least some seconds inside the Trigger's Collider area
On Trigger Enter	Detects when an object enters the Trigger's Collider area and has the isTrigger flag set as true
On Tag Enter	Detects when an object with a certain tag enters the Trigger's Collider area
On Trigger Exit	Detects when an object exits the Trigger's Collider area and has the isTrigger flag set to true
On Tag Exit	Detects when an object with a certain tag exits the Trigger's Collider area
On Trigger Stay Timeout	Detects when an object has been at least a few seconds inside the Trigger's Collider area

Variables

Trigger Name	Description
On Variable Change	Detects when a Global, Local or List Variable changes its value/s

User Interface

Trigger Name	Description
On Mouse Enter UI	Detects when the mouse hovers a UI element
On Mouse Exit UI	Detects when the mouse exits hovering a UI element

General

Trigger Name	Description
On Event Receive	Detects when a certain Dispatched Event is received. For more information on the Event System click here
On Invoke	Detects when a Trigger is manually invoked
On Disable	Detects when the Trigger Game Object is disabled
On Enable	Detects when the Trigger Game Object is enabled
On Load	Detects when a game is loaded from a save file
On Save	Detects when a game is saved
On Start	Detects when the Trigger Game Object is initialized