QueryTriggerInteraction

Description

Overrides the global Physics.queriesHitTriggers.

Overrides the global Physics.queriesHitTriggers to specify whether queries (raycasts, spherecasts, overlap tests, etc.) hit Triggers by default. Use Ignore for queries to ignore trigger Colliders.

//Create two GameObjects (e.g. a Cube) and place them near each other. Attach this script to one of them.
//Click on the GameObject with the script. Attach the other GameObject to the “My Game Object” field in the Inspector.
//Make sure both have Collider components
//Choose your own “Max Distance” in the Inspector (e.g. 600).

//This script casts a ray that ignores Trigger Colliders.
//Press space to switch the second GameObject between a Trigger and non-Trigger GameObject. When the Trigger is off, the ray detects a collision. When it is on, no collisions occur.

using UnityEngine;

public class Example : MonoBehaviour
{
    //The maximum distance from your GameObject. Make sure to set this in the Inspector
    public float m_MaxDistance;
    public LayerMask m_Mask = -1;

    //Assign a GameObject in the Inspector that you want to test collisions with
    public GameObject m_MyGameObject;
    //This is the Collider of the GameObject you assign in the Inspector
    Collider m_OtherGameObjectCollider;

    void Start()
    {
        //Fetch the Collider from the GameObject you assign in the Inspector
        m_OtherGameObjectCollider = m_MyGameObject.GetComponent<Collider>();
    }

    void FixedUpdate()
    {
        //Set the direction as forward
        Vector3 direction = transform.TransformDirection(Vector3.forward);

        //Use Physics to calculate the raycast
        //Uses your GameObject's original position, the direction (above), the max distance from your GameObject, and the LayerMask value to calculate raycast.
        //Also tells it to ignore trigger colliders using QueryTriggerInteraction
        if (Physics.Raycast(transform.position, direction, m_MaxDistance, m_Mask.value, QueryTriggerInteraction.Ignore))
            print("There is something in front of the object!");
    }

    void Update()
    {
        //Press space to turn the other GameObject's trigger status on and off
        if (Input.GetKeyDown(KeyCode.Space))
        {
            //Test if the trigger collisions are ignored by turning the GameObject's trigger collider on and off
            m_OtherGameObjectCollider.isTrigger = !m_OtherGameObjectCollider.isTrigger;
        }
    }
}

Variables