first commit

Assets/Scripts/KnobController.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class KnobController : MonoBehaviour
+{
+    [SerializeField] private MassController _massController;
+    [SerializeField] private float _rotationDuration = 0.3f;
+    [SerializeField] private Vector3[] _positions;
+
+    private int _currentIndex = 0;
+    private bool _isRotating = false;
+
+    private void OnMouseDown()
+    {
+        if (_isRotating) return;
+
+        RotateToNextPosition();
+
+        if (_massController != null)
+            _massController.SwitchUnit();
+    }
+
+    private void RotateToNextPosition()
+    {
+        _currentIndex++;
+
+        if (_currentIndex >= _positions.Length)
+            _currentIndex = 0;
+
+        StartCoroutine(RotateTo(_positions[_currentIndex]));
+    }
+
+    private IEnumerator RotateTo(Vector3 targetEuler)
+    {
+        _isRotating = true;
+
+        Quaternion start = transform.rotation;
+        Quaternion end = Quaternion.Euler(targetEuler);
+
+        float time = 0f;
+
+        while (time < _rotationDuration)
+        {
+            time += Time.deltaTime;
+            float t = time / _rotationDuration;
+
+            transform.rotation = Quaternion.Slerp(start, end, t);
+            yield return null;
+        }
+
+        transform.rotation = end;
+        _isRotating = false;
+    }
+}