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Question by ezechielwilsonporter · Jun 23, 2021 at 02:33 PM · c#2dcollisioncollidertopdown

How do you add a Collider2D to a Line Renderer In Unity2D?

I am currently working on a project where you draw using a line renderer. I need to be a to have collisions for my idea to work. I have looked all over the internet but yet nothing has seemed to work. I have provided the code bellow. Thank you for your time.

 public class Draw : MonoBehaviour
 {
     public Camera m_camera;
     public GameObject brush;
 
     LineRenderer currentLineRenderer;
 
     Vector2 lastPos;
 
     public AudioSource Splash;
     
     public void Start()
     {
         var mesh = new Mesh();
         var meshCollider = currentLineRenderer.gameObject.AddComponent<MeshCollider>();
 
         currentLineRenderer.BakeMesh(mesh, true);
         meshCollider.sharedMesh = mesh;
     }
     private void Update()
     {
         Drawing();
     }
 
     void Drawing() 
     {
         if (Input.GetKeyDown(KeyCode.Mouse0))
         {
             CreateBrush();
         }
         else if (Input.GetKey(KeyCode.Mouse0))
         {
             PointToMousePos();
             
         }
         else 
         {
             currentLineRenderer = null;
         }
     }
 
     void CreateBrush() 
     {
         GameObject brushInstance = Instantiate(brush);
         currentLineRenderer = brushInstance.GetComponent<LineRenderer>();
 
         //because you gotta have 2 points to start a line renderer, 
         Vector2 mousePos = m_camera.ScreenToWorldPoint(Input.mousePosition);
 
         currentLineRenderer.SetPosition(0, mousePos);
         currentLineRenderer.SetPosition(1, mousePos);
 
     }
 
     void AddAPoint(Vector2 pointPos) 
     {
         currentLineRenderer.positionCount++;
         int positionIndex = currentLineRenderer.positionCount - 1;
         currentLineRenderer.SetPosition(positionIndex, pointPos);
     }
 
     void PointToMousePos() 
     {
         Vector2 mousePos = m_camera.ScreenToWorldPoint(Input.mousePosition);
         if (lastPos != mousePos) 
         {
             AddAPoint(mousePos);
             lastPos = mousePos;
         }
     }
 
 }
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