• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by MechanicalGaming · Jun 13, 2015 at 10:46 PM · collisiondetectiondetectbodypossible

Is it possible to check collision from another object?

The question says everything. Can we detect a collision from an object from another object. For example, a collision that happens to a child object of a body that will make the health go down. Thanks for your answers everyone!

Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

6 Replies

· Add your reply
  • Sort: 
avatar image
0

Answer by MadAssau1t · Mar 10, 2021 at 03:43 AM

Just passing through with my solution. add script to any child object u want to pass trigger enter events to parent for. Other events (exits/collisionenter/etc) can be handled in this same class this is just all i typed for an example. Then just get the child object in the parent, from getcomponentsinchildren or one of the many other ways in unity to get gameObjects/components, and set ur event handler like

colliderpasser.TriggerEnter += MethodToCallOnTriggerEnter;

your method "MethodToCallOnTriggerEnter" will need 2 parameters, GameObject, Collider because this is what the delegate in the script sets it to, this can be any parameters you want really though

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.EventSystems;
 
 //attach to any child that you want a parent object to detect collisions for
 public class ColliderPasser : MonoBehaviour
 {
 
    //Custom event to send this and the colliding object collider (instead of the normal object, eventargs)
    public delegate void MyEventHandler(GameObject sender, Collider col);
    public event MyEventHandler TriggerEnter;
 
   private Collider collider;
 
    private void OnTriggerEnter(Collider other)
    {
       collider = other;
     //call method to raise event
       TEnter();
      
    }
 
    public void TEnter()
    {
       MyEventHandler handler = TriggerEnter;
       //pass this and the colliding collider
       handler?.Invoke(gameObject, collider);
    }
 
 }



Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
  • ‹
  • 1
  • 2

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

If you’re new to Unity Answers, please check our User Guide to help you navigate through our website and refer to our FAQ for more information.

Before posting, make sure to check out our Knowledge Base for commonly asked Unity questions.

Check our Moderator Guidelines if you’re a new moderator and want to work together in an effort to improve Unity Answers and support our users.

Follow this Question

Answers Answers and Comments

32 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Checking and destroying a rigidbody? 2 Answers

Weapon System with collide detection (Helps with script pls)!!! 0 Answers

Create hinge joint 2D by collision 2 Answers

How to detect when an object goes past (so it looks like it touches) a UI element. 1 Answer

Detect Side of Collision 2 Answers


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges