koobas.hobune.stream
Line Renderer Issues
I needed a 'light' that bounced off gameObjects in the 'Mirror' layer. I decided to use Line renderer, and I cannot see the line being drawn at runtime. I don't know what is the thing that I am doing wrong, but have a look anyways. This is the code that controls the Line Renderer and the raycasting for the line renderer.
using UnityEngine;
[RequireComponent(typeof(LineRenderer))]
public class MirrorReflect : MonoBehaviour
{
public LayerMask layer;
private LineRenderer lineRenderer;
private void Start()
{
lineRenderer = GetComponent<LineRenderer>();
}
private void Update()
{
CalculateReflections(transform.position + new Vector3(1, 0), transform.right);
}
private void CalculateReflections(Vector3 position, Vector3 direction)
{
int reflectionIndex = 1;
RaycastHit2D hit = Physics2D.Raycast(position, direction, 100, layer);
if (hit.collider != null)
{
reflectionIndex++;
lineRenderer.positionCount = reflectionIndex;
lineRenderer.SetPosition(reflectionIndex, hit.point);
Debug.Log(hit.collider.gameObject.name);
if (hit.collider.gameObject.layer == layer)
{
CalculateReflections(hit.point, hit.normal);
}
}
else
{
return;
}
}
}
The raycast is infact hitting the 'mirror' gameobject, as it displays the name in the console, but the line renderer is not updated. Any help is greatly appreciated!
Try this: before setting the line position, set the z-value of the hit point to -1
hit.point.z = -1;
lineRenderer.SetPosition(reflectionIndex, hit.point);
I found the problem. The reflectionIndex was starting from 1, while an array's start is always 0. so, I had to do lineRenderer.SetPosition(reflectionIndex - 1, hit.point); to get wanted behavior. Though this works, this condition : if (hit.collider.gameObject.layer == layer) always fails even if it hits the correct object which is on the correct layer. $$anonymous$$gestions?
Just setting the z-value of the hit point to -1 didn't solve your problem?
hit.point.z = -1;
lineRenderer.SetPosition(reflectionIndex, hit.point);
