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"Trigger" Script for Trigger Volumes in Unity

The "Trigger" script is an abstract class used to create trigger volumes in Unity. It is instantiated with a MeshFilter and a MeshRenderer, allowing you to define specific areas in the game space that react to interactions from other objects.

The "Trigger" script includes the following features:

• It allows specifying a material for the trigger volume rendering.

• It handles events triggered when an object enters, stays, or exits the trigger volume.

• It supports a cooldown for triggering (useful for triggers that should not be activated too frequently).

• It provides the option to disable the GameObject after the trigger is activated.

• It allows specifying the layers the trigger can interact with

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To use the "Trigger" script, you need to create a derived class and implement the following abstract methods:

• Init(): Initialization of the trigger.

• TriggerEnter(Collider other): Actions to perform when the volume is activated by an entering object.

• TriggerExit(Collider other): Actions to perform when the volume is activated by an exiting object.

• TriggerStay(Collider other): Actions to perform when the volume is activated by an object staying inside.

"TriggerBox" Script

The "TriggerBox" script is a derived class of the "Trigger" script that allows creating box-shaped trigger volumes in Unity. It adds specific functionalities for boxes, such as a BoxCollider component and a quick creation option from the editor.

Required Components

The "TriggerBox" script requires the following components on the GameObject:

• BoxCollider: Defines the trigger area as a box.

The "TriggerBox" script extends the "Trigger" script by adding the Init() method, which configures the GameObject's mesh to match a cube. Additionally, it uses a preprocessor directive #if UNITY_EDITOR to add a context menu in the editor for quickly creating box-shaped trigger volumes.

When selecting the "GameObject/Trigger/Trigger Box" option from the editor menu, a trigger box will be created with a BoxCollider component, and the "TriggerBox" script will be automatically attached.

"TriggerUse" Script for User Input-based Trigger Volumes in Unity

The "TriggerUse" script is a derived class of the "Trigger" script that allows creating trigger volumes based on specific user input in Unity. This script adds functionalities related to user input, such as checking for a specific input and the ability to trigger the event only once.

Properties

The "TriggerUse" script contains the following properties:

• inputToTrigger: A scriptable object of type InputButtonScriptableObject that represents the user input to check.

• triggerOnce: A boolean indicating whether the trigger should be disabled after being used.

The "TriggerUse" script extends the "Trigger" script by adding the TriggerEnter method, which listens for changes in the value of the user input specified in inputToTrigger. When the value of the user input becomes true, the EventOnTriggerInput event is triggered.

If the triggerOnce property is set to true, the script will deactivate after being used once.