LineRenderer: How to make it follow the mouse in the opposite direction?

I'm trying to develop a football game with a drag and launch input and its working really good, but the LineRenderer in this case is not helping at all



the red line is a Debug.DrawRay
Code (CSharp):

1. Debug.DrawRay(transform.position, -forceVector / magMultiplier, currentColor);

My goal is to copy this draw ray logic and apply it to the LineRendererComponent (which is the purple line)

so when the gameobject is clicked, it shows this purple line around it mimicking the mouse

(this is a drag and shoot system)

 

So LineRenderer behaves a bit closer to Debug.DrawLine than Debug.DrawRay, where it takes absolute world positions rather than one absolute position and one relative one.

DrawRay takes an origin point, and a direction. The end of the ray will actually be at origin + direction. So you probably want something like:

Code (CSharp):

1. // However you get your LR reference...
2. LineRenderer lineRenderer;
3.  
4. lineRenderer.positionCount = 2;
5. // Line starts at the cue ball...
6. lineRenderer.SetPosition(0, transform.position);
7.  
8. // And ends at cueball + force
9. Vector3 force = -forceVector / magMultiplier;
10. lineRenderer.SetPosition(1, transform.position + force);

 

@PraetorBlue

tried you code and the result is this:



At the moment this is the current config for the LineRenderer component



I used your logic before and I'm pretty sure it should work, maybe this is a bug with the LineRenderer component?

 

Try turning on the "Use World Space" checkbox on that inspector

 

@PraetorBlue it worked! really weird I tried this same code, but not creating a new vector3 object, adding it inside the function directly and it did some weird results! Thanks so much!