Moved throttle adj to Instrument manager and made altimeter

Assets/Scripts/Altimeter.cs

@@ -1,7 +1,27 @@
+using Unity.VisualScripting;
 using UnityEngine;
 
 public class Altimeter : MonoBehaviour
 {
-    void Start() { }
-    void Update() { }
+    [Header("References")]
+    public Rigidbody rocketRigidbody; // Reference to the rocket's Rigidbody
+    [Header("Data")]
+    public double altitude = 0; // Current altitude
+    public double gh = 9.81f; // Gravitational acceleration
+
+    [Header("Settings")]
+    [SerializeField] private double G = 6.67408f * Mathf.Pow(10, -11); // Gravitational constant
+    [SerializeField] private double M = 5.972f * Mathf.Pow(10, 24); // Mass of Earth
+    [SerializeField] private double RE = 6.372f * Mathf.Pow(10, 6); // Radius of Earth
+    private double GM; // Gravitational parameter (G * M)
+
+    void Start()
+    {
+        GM = G * M; // Calculate the gravitational parameter
+    }
+    void Update()
+    {
+        altitude = rocketRigidbody.position.y; // Update altitude based on the rocket's vertical position
+        gh = (double)(GM / Mathf.Pow((float)(RE + altitude), 2)); // Calculate gravitational acceleration at current altitude
+    }
 }