Selection Wheel Script

using System;
using UnityEngine;
using UnityStandardAssets.CrossPlatformInput;

namespace Features.Build.Views
{
  public class SelectionWheelView : MonoBehaviour
  {
    private const string MOUSE_X_AXIS = "Mouse X";
    private const string MOUSE_Y_AXIS = "Mouse Y";
     
    [SerializeField]
    private RectTransform _selectionArrow;
    [SerializeField]
    private float _rotationStep = 5;
    [SerializeField]
    private float _directionMagnitude = 1f;
    [SerializeField]
    private float _lerpSpeed = 50f;
    [SerializeField]
    private int _selectionItems = 4;
    [SerializeField]
    private GameObject[] _selectionLevels;
    [SerializeField]
    private float _selectionLevelIncreaseTimer = 0.15f;

    private Vector2 _currentMouseDirection;
    private Vector2 _currentMouseMagnitude;
    private Vector2 _currentWheelDirection;
    private float _smoothedAngle;
    private int _currentSelectionEdge;
    private float _currentSelectionEdgeTimer;

    private void Update()
    {
      CalculateDirection();
      RotateArrow();
      RotateEdges();
    }

    private void RotateEdges()
    {
      var rotationStep = 360 / _selectionItems;
      var angleDegrees = Mathf.Round(_smoothedAngle / _rotationStep) * _rotationStep;
      var selectionAngleDegrees = Mathf.Round(angleDegrees / rotationStep) * rotationStep;
      var selectionEdge = selectionAngleDegrees / rotationStep;
      var selectionEdgeInt = Mathf.RoundToInt(selectionEdge) % _selectionItems;

      if (selectionEdgeInt != _currentSelectionEdge)
      {
        _currentSelectionEdge = selectionEdgeInt;
        _currentSelectionEdgeTimer = 0;
      }

      _currentSelectionEdgeTimer += Time.deltaTime;

      for (var i = 0; i < _selectionLevels.Length; i++)
      {
        var selectionLevel = _selectionLevels[i];
        selectionLevel.transform.SetLocalEularZ(selectionAngleDegrees);
        var show = _currentSelectionEdgeTimer > i * _selectionLevelIncreaseTimer;
        selectionLevel.SetActive(show);
      }
    }

    private void CalculateDirection()
    {
      var mouseAxisX = CrossPlatformInputManager.GetAxis(MOUSE_X_AXIS);
      var mouseAxisY = CrossPlatformInputManager.GetAxis(MOUSE_Y_AXIS);
      var mouseAxisVector = new Vector2(mouseAxisX, mouseAxisY);

      _currentMouseDirection += mouseAxisVector;
      _currentMouseMagnitude += new Vector2(Mathf.Abs(mouseAxisVector.x), Mathf.Abs(mouseAxisVector.y));

      if (_currentMouseMagnitude.magnitude > _directionMagnitude)
      {
        _currentMouseDirection = _currentMouseDirection.normalized * _directionMagnitude;
        _currentMouseMagnitude = _currentMouseMagnitude.normalized * _directionMagnitude;
        _currentWheelDirection = _currentMouseDirection.normalized;
      }
    }

    private void RotateArrow()
    {
      float angleRadians = Mathf.Atan2(-_currentWheelDirection.x, _currentWheelDirection.y);
      float angleDegrees = angleRadians * Mathf.Rad2Deg;
      angleDegrees = (angleDegrees + 360) % 360;
         
      _smoothedAngle = Mathf.MoveTowardsAngle(_smoothedAngle, angleDegrees, Time.deltaTime * _lerpSpeed);
      angleDegrees = Mathf.Round(_smoothedAngle / _rotationStep) * _rotationStep;
         
      _selectionArrow.SetLocalEularZ(angleDegrees);
    }
  }
}

Телеграм-канал Jun GameDev