Init

Assets/Scripts/Drawer.cs

@@ -0,0 +1,68 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.EventSystems;
+
+public class Drawer : MonoBehaviour
+{
+    public LineRenderer lineRenderer;
+    public EdgeCollider2D edgeCollider2D;
+    List<Vector3> points = new List<Vector3>();
+
+
+    bool dragging = false;
+    public void OnMouseDown(BaseEventData e){
+        PointerEventData ped = (PointerEventData) e as PointerEventData;
+        
+        dragging= true;
+        startedPoint = ped.position;
+        lineRenderer.SetPositions(new Vector3[0]);
+        points = new List<Vector3>();
+
+
+    }
+
+
+    Vector3 startedPoint = new Vector3();
+    public void OnMouseDrag(BaseEventData e) { 
+        PointerEventData ped = (PointerEventData) e as PointerEventData;
+        
+        points.Add(Camera.main.ScreenToWorldPoint(ped.position));
+        UpdateLine();
+    }
+
+    public void OnMouseUp(BaseEventData e)
+    {
+        dragging= false;
+        FinishDrawing();
+    }
+
+
+    void UpdateLine()
+    {
+        lineRenderer.positionCount = points.Count;
+        lineRenderer.SetPositions(points.ToArray());
+
+        
+    }
+
+
+    void FinishDrawing()
+    {
+        List<Vector2> points3 = new List<Vector2>();
+        foreach(Vector2 point in points)
+        {
+            points3.Add(point);
+        }
+        edgeCollider2D.SetPoints(points3);
+        edgeCollider2D.GetComponent<Rigidbody2D>().simulated = true;
+    }
+
+    void OnValidate()
+    {
+        if (edgeCollider2D == null)
+        {
+            edgeCollider2D = lineRenderer.GetComponent<EdgeCollider2D>();
+        }
+    }
+}

Assets/Scripts/Drawer.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 09d7921f3426c1c4ea7ce5f8764d75f4
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: