vine prefab

Assets/Prefab/Vine.prefab (Stored with Git LFS)

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Assets/Scenes/BoatTest.unity (Stored with Git LFS)

+size 47470

Assets/vine.cs

@@ -0,0 +1,69 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[ExecuteInEditMode]
+public class vine : MonoBehaviour
+{
+    private LineRenderer lineRenderer;
+
+    [SerializeField]
+    private GameObject position1;
+    [SerializeField]
+    private GameObject position2;
+
+    private Vector3 lastPosition1;
+    private Vector3 lastPosition2;
+    private float lastDipMagnitude;
+    private int lastNumberPoints;
+
+    [SerializeField]
+    private AnimationCurve vineCurve;
+    [SerializeField]
+    private float dipMagnitude = 1f;
+    [SerializeField]
+    private int numberOfPoints = 20;
+
+    // Start is called before the first frame update
+    void Awake()
+    {
+        lineRenderer = GetComponent<LineRenderer>();
+    }
+
+    void Update()
+    {
+        //if both positions are defined
+        if (position1 != null && position2 != null)
+        {
+            //if either of the points have moved
+            if ((position1.transform.position != lastPosition1) || (position2.transform.position != lastPosition2) || (dipMagnitude != lastDipMagnitude) || (numberOfPoints != lastNumberPoints))
+            {
+                Recalculate();
+            }
+        }
+    }
+
+    [ContextMenu("Recalculate")]
+    void Recalculate()
+    {
+        lineRenderer.positionCount = numberOfPoints;
+
+        //set start and end
+        lineRenderer.SetPosition(0, position1.transform.position);
+        lineRenderer.SetPosition(lineRenderer.positionCount-1, position2.transform.position);
+
+        for (int i = 0; i<lineRenderer.positionCount; i++)
+        {
+            Vector3 newLerpPos = Vector3.Lerp(position1.transform.position, position2.transform.position, i / (float)(lineRenderer.positionCount - 1));
+            Vector3 newDip = Vector3.up * dipMagnitude * (1f - vineCurve.Evaluate(i / (float)(lineRenderer.positionCount - 1)));
+
+
+            lineRenderer.SetPosition(i, newLerpPos - newDip);
+        }
+
+        lastPosition1 = position1.transform.position;
+        lastPosition2 = position2.transform.position;
+        lastDipMagnitude = dipMagnitude;
+        lastNumberPoints = numberOfPoints;
+}
+}

Assets/vine.cs.meta

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