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Assets/Obi/Samples/RopeAndRod/SampleResources/Scripts/PinholeRatchet.cs

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+using UnityEngine;
+
+namespace Obi.Samples
+{
+    public class PinholeRatchet : MonoBehaviour
+    {
+        public ObiPinhole pinhole;
+        public bool direction = false;
+        public float teethSeparation = 0.1f;
+
+        public float distanceToNextTooth { get; private set; }
+
+        void Update()
+        {
+            if (pinhole == null || pinhole.rope == null)
+                return;
+
+            float restLength = (pinhole.rope as ObiRopeBase).restLength;
+            float normalizedTeethDistance = Mathf.Max(0.001f, teethSeparation / restLength);
+            var range = pinhole.range;
+
+            if (direction)
+            {
+                distanceToNextTooth = (range.y - pinhole.position) * restLength;
+                while (distanceToNextTooth > teethSeparation)
+                {
+                    range.y -= normalizedTeethDistance;
+                    distanceToNextTooth -= teethSeparation;
+                }
+            }
+            else
+            {
+                distanceToNextTooth = (pinhole.position - range.x) * restLength;
+                while (distanceToNextTooth > teethSeparation)
+                {
+                    range.x += normalizedTeethDistance;
+                    distanceToNextTooth -= teethSeparation;
+                }
+            }
+
+            pinhole.range = range;
+        }
+
+        public void OnDisable()
+        {
+            if (pinhole != null)
+                pinhole.range = new Vector2(0, 1);
+        }
+    }
+}