LineRenderer.Setposition Index Out Of Bound

Physics
1

Hi everyone, i am working on Unity Tutorial Let’s Try RayCast Shooting, i have finished the script but when i click fire button, the console shows error LineRenderer.Setposition Index Out Of Bound and nothing happen, i have searching for a while but still no clue, this is urgent, please help me, Thank you.

2

Could you show us any of your code?

1 Like
3 
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Shooting : MonoBehaviour {
    public int Damage=1;
    public float FireRate = 0.25f;
    public float WeaponRange=50f;
    public float HitForce=100f;
    public Transform GunEnd;

    private Camera FpsCam;
    private WaitForSeconds ShotDuration= new WaitForSeconds(0.07f);
    private LineRenderer LaserLine;
    private float NextFire;
    void Start ()
    {
        LaserLine = GetComponent<LineRenderer>();
        FpsCam = GetComponentInParent<Camera>();
    }


    void Update ()
    {
        if (Input.GetKey(KeyCode.Mouse0) && Time.time > NextFire)
        {
            NextFire = Time.time + FireRate;
            StartCoroutine(ShotEffect());
            Vector3 RayStartPoint = FpsCam.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0));
            RaycastHit Hit;
            LaserLine.SetPosition(0, GunEnd.position);
            if(Physics.Raycast(RayStartPoint,FpsCam.transform.forward,out Hit,WeaponRange))
            {
                LaserLine.SetPosition(1,Hit.point);
            }
            else
            {
                LaserLine.SetPosition(1, RayStartPoint + (FpsCam.transform.forward * WeaponRange));
            }
        }
    }
    private IEnumerator ShotEffect()
    {
        LaserLine.enabled = true;
        yield return ShotDuration;
        LaserLine.enabled = false;
    }
}

here is my Script

4

Um, hello, any suggestion?

5

Sorry, I was at home/in bed.

Take a look at Unity - Scripting API: LineRenderer.SetVertexCount

My guess is that you need to specify how many vertices your line will consist of, before setting their vertices.

2 Likes
6

Oh thank you, but LineRenderer.SetVertexCount is Obsolete and i can’t use that, it’s suggest me using startwidth in LineRenderer property and i’ve tried that too, but still error, can you please help me check the Unity Tutorial here
https://unity3d.com/learn/tutorials/lets-try/shooting-with-raycasts?playlist=41639
I did exactly the same in video but error

7

just forget it, i figure it out by setting the size in LineRenderer component to 2, thank you anyway

1 Like
8

Sorry, I gave you an obsolete API. It should not be telling you to use startWidth instead, though, it should be telling you to use Unity - Scripting API: LineRenderer.numPositions

Taking a look at the tutorial now…

9

Ok, great :slight_smile: