Angle needle moves, pie and target disappear on collision, pie spawns on...

Angle needle moves, pie and target disappear on collision, pie spawns on 'space' and obeys in-built gravity

RingMaster/RingMaster/Assets/Prefabs/pie.prefab

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RingMaster/RingMaster/Assets/Scripts/Needle.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Needle : MonoBehaviour {
+    public float angleChangeSpeed, maxAngle, minAngle;
+    public Transform piePrefab;
+    float currentAngle = 0;
+    float previousAngle = -1f;
+    public static float finalAngle;
+
+    void Update()
+    {