如何在 unity2d 中將 Vector2 方向旋轉 20 度？

Question

我正在嘗試在 Vector2.right 上投射一條光線，並在其兩側投射另一條光線 20 度。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PathFinding : MonoBehaviour
{
    public float speed = 5f;

    // Update is called once per frame
    private void Update()
    {
        //replace target.position with Camera.main.ScreenToWorldPoint(Input.mousePosition) to follow mouse pointer
        Vector2 direction = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
        float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
        Quaternion rotation = Quaternion.AngleAxis(angle, Vector3.forward);
        transform.rotation = Quaternion.Slerp(transform.rotation, rotation, speed * Time.deltaTime);

        if (Input.GetKey(KeyCode.Space))
        {
            Debug.DrawRay(transform.position, transform.TransformDirection(Vector2.right) * 10f, Color.green);
            RaycastHit2D front = Physics2D.Raycast(transform.position, transform.TransformDirection(Vector2.right), 10f);
            if (front)
            {
                Debug.Log("Hit Something : " + front.collider.name);
                //hit.transform.GetComponent<SpriteRenderer>().color = Color.red;
                Debug.DrawRay(transform.position, transform.TransformDirection(Vector2.right) * 10f, Color.red);
            }
        
            RaycastHit2D left1 = Physics2D.Raycast(transform.position, transform.Rotate_Direction(Vector2.right), 10f);
        }
    }
}

只是在最后一行代碼中我遇到了困難。 我想為transform.Rotate_direction(Vector2.right)位添加一個輕微的旋轉。

我對編程很陌生，尤其是這里的這個，所以如果你能解釋你所做的事情，並可能告訴我如何實現它，我將不勝感激。

提前致謝。

Answer 1

通過將向量后面的Quaternion相乘，您可以改變其方向。 在您的問題中，您需要使用Quaternion.AngleAxis 。

Quaternion.AngleAxis(20f, Vector3.forward) * Vector2.right