• 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 galaboy · Feb 11, 2019 at 10:49 AM · raycastraycasthitreflect

How to reflect raycast when hit an object.

Hi, i tried to reflect a raycast when hit an object. The limit of the raycast hit has to be 3. I tried searching, but could able to find. i am positng my script here, please have a look and tell what i am missing.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Laser_1 : MonoBehaviour {
 
     public int maxHitCount = 3;
     public int rayMaxDistance = 0;
     private int hitCount = 0;
     
 
     public Vector3 startingPosition;
     private Vector3 direction;
 
     LineRenderer laserRenderer;
 
     // Use this for initialization
     void Start () {
         laserRenderer = GetComponent<LineRenderer>();
         //startingPosition = transform.position;
     }
     
     // Update is called once per frame
     void Update () {
         ProjectTrajectory();
     }
 
     void ProjectTrajectory()
     {
         Ray ray = new Ray(startingPosition, direction);
         RaycastHit hit;
 
         laserRenderer.SetPosition(0, new Vector3(0, 0, transform.position.z));
 
         //Debug.Log("The hit count outside if is : " + hitCount);
 
         //if (Physics.Raycast(ray, out hit, rayMaxDistance))
         if (Physics.Raycast(transform.position, transform.forward, out hit, rayMaxDistance))
         //if (Physics.Raycast(transform.position, direction, out hit, rayMaxDistance))
         {
            
             startingPosition = hit.point;
             laserRenderer.SetPosition(1, hit.point);
 
             direction = Vector3.Reflect(direction, hit.normal);
             //direction = Vector3.Reflect(hit.point - transform.position, hit.normal);
         }
         else
         {
             //Debug.DrawLine(transform.position, (transform.forward * rayMaxDistance), Color.red);
             //laserRenderer.SetPosition(0, new Vector3(0, 0, transform.position.z));
             laserRenderer.SetPosition(1, transform.forward * rayMaxDistance);
         }
     }
 }

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

0 Replies

· Add your reply
  • Sort: 

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

The best place to ask and answer questions about development with Unity.

To help users navigate the site we have posted a site navigation guide.

If you are a new user to Unity Answers, check out our FAQ for more information.

Make sure to check out our Knowledge Base for commonly asked Unity questions.

If you are a moderator, see our Moderator Guidelines page.

We are making improvements to UA, see the list of changes.



Follow this Question

Answers Answers and Comments

141 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 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 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 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 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

Grabbing MonoBehavior object from collision 1 Answer

Difference between hit.collider.gameObject vs hit.transform.gameObject 2 Answers

Raycast script help? 1 Answer

Raycast Coding Issues 1 Answer

Mesh polygon of a hit surface on a gameobject 1 Answer

  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges