Rotating a sprite 90 degrees

Unity Engine
,
1

Hi everyone, I have the following code for a simple snake-like game

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

public class Snake : MonoBehaviour
{
    Vector2 dir = Vector2.right;
    List<Transform> body = new List<Transform>();
    bool growing = false;
    public GameObject bodyPrefab;
    private SpriteRenderer sr;

    void Start()
    {
        InvokeRepeating("Move", 0.3f, 0.3f);
        sr= GetComponent<SpriteRenderer>();
    }

    void Update()
    {
       
       
        if (Input.GetKeyDown(KeyCode.RightArrow))
            {
            dir = Vector2.right;
           
            }
        else if (Input.GetKeyDown(KeyCode.DownArrow))
            {
            dir = -Vector2.up;
            ;
           
            }   
        else if (Input.GetKeyDown(KeyCode.LeftArrow))
            {
            dir = -Vector2.right;
                   
            }
        else if (Input.GetKeyDown(KeyCode.UpArrow))
            {
            dir = Vector2.up;
           
            }
    }

    void Move()
    {
        if(dir==Vector2.right)
        {
            sr.flipX = false;
        }
        else if(dir==-Vector2.right)
        {
            sr.flipX = true;
        }
        else if(dir==Vector2.up)
        {
            transform.Rotate(0,0,90);
        }
        else
        {
            transform.Rotate(0,0,270);

        }
       
    }

By flipping the sprite I get the head to flip direction but when I use the rotate function it keeps rotating every time it invokes the function. What do I use to just rotate the sprite once?

Thanks!

2

Using the .Rotate() method indeed rotates FROM wherever you are already rotated.

You are probably looking to simply SET the rotation. That would look like this:

transform.rotation = Quaternion.Euler( 0, 0, 90);

And to put it back to zero:

transform.rotation = Quaternion.Euler( 0, 0, 0);   // same as Quaternion.identity