Sliding crane with height

Assets/Scripts/SlidingCrane.cs

@@ -7,33 +7,55 @@ public class SlidingCrane : MonoBehaviour
 {
     public InertialInterpolator xMotion = InertialInterpolator.Default();
     public InertialInterpolator yMotion = InertialInterpolator.Default();
+    public InertialInterpolator heightMotion = InertialInterpolator.Default();
 
     public Transform xTransform;
     public Transform yTransform;
 
-
     public float yRange = 10;
     public float xRange = 5;
+    public float heightRange = 10;
 
-    public Transform testTgt;
-    public Vector3 target;
+    public float heightMax = -0.7f;
+    public float heightMin = -10;
+
+    /// <summary>
+    /// if targetTrasnform is set, it will go to it. If null it will go to targetPoint
+    /// </summary>
+    public Transform targetTransform;
+
+    /// <summary>
+    /// if targetTrasnform is set, it will go to it. If null it will go to targetPoint
+    /// </summary>
+    public Vector3 targetPoint;
 
     public Transform cradleTransform;
     public Rigidbody cradleRb;
 
     private void Start()
     {
-        target = transform.position;
+        targetPoint = transform.position;
         xMotion.progress = 0.5f;
+
+        
+
+    }
+
+    private void Update()
+    {
+        if (Input.GetKeyDown(KeyCode.V))
+            heightMotion.AccelerateTo(0);
+        if (Input.GetKeyDown(KeyCode.F))
+            heightMotion.AccelerateTo(1);
     }
 
     void FixedUpdate()
     {
-        if (testTgt)
-            target = testTgt.position;
+        if (targetTransform)
+            targetPoint = targetTransform.position;
 
 
-        Vector3 localTarget = transform.InverseTransformPoint(target);
+        Vector3 localTarget = transform.InverseTransformPoint(targetPoint);
 
         Vector2 targetPlanar = new Vector2(localTarget.x, localTarget.z);
 
@@ -48,10 +70,13 @@ public class SlidingCrane : MonoBehaviour
 
         xMotion.Update(Time.deltaTime);
         yMotion.Update(Time.deltaTime);
+        heightMotion.Update(Time.deltaTime);
 
         yTransform.localPosition = new Vector3(0, 0, yMotion.progress * yRange);
         xTransform.localPosition = new Vector3(x, 0, 0);
 
         //cradleRb.MovePosition(cradleTransform.position);
+
+        cradleRb.transform.localPosition = new Vector3(0, Mathf.Lerp(heightMin, heightMax, heightMotion.progress), 0);
     }
 }