How can i normalize 2d Vectors?

Questions & Answers
1

I´ve coded some very basic player movement

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour {

    private bool isDodging;
    private Vector2 direction;
    private float stamina;
    private float characterSpeed = 0.10F;
    
    void Start()
    {
        stamina = 100f;
    }

    void FixedUpdate()
    {                                                 
        if (Input.GetKey(KeyCode.W))                                
        {
            direction = Vector2.up;
            transform.Translate(direction * characterSpeed);
        }
        if (Input.GetKey(KeyCode.A))
        {
            direction = Vector2.left;
            transform.Translate(direction * characterSpeed);
        }
        if (Input.GetKey(KeyCode.S))
        {
            direction = Vector2.down;
            transform.Translate(direction * characterSpeed);
        }
        if (Input.GetKey(KeyCode.D))
        {
            direction = Vector2.right;
            transform.Translate(direction * characterSpeed);
        }

        if (isDodging != true)
        {
            if (Input.GetKey(KeyCode.LeftShift))
            {
                characterSpeed = 0.2F;
            }
            else
            {
                characterSpeed = 0.10F;
            }
        }

        if (Input.GetKeyDown(KeyCode.Space))
        {
            StartCoroutine("Roll");
        }
            
    }

    IEnumerator Roll()
    {
        isDodging = true;
        characterSpeed = 0.20f;

        yield return new WaitForSeconds(0.3f);

        characterSpeed = 0.05f;

        yield return new WaitForSeconds(0.25f);

        isDodging = false;
        characterSpeed = 0.10f;
    }
}

When 2 directions are pressed simultaneously the resulting speed is higher.

How can i prevent this?

2

void FixedUpdate()
{
direction = new Vector2(Input.GetAxis(“Horizontal”),Input.GetAxis(“Vertical”));
direction.Normalize();
transform.Translate(directionTime.deltaTimecharacterSpeed);
}

3

Unity has a built-in function for Vector2 to normalize the Vectors.

if(direction.sqrMagnitude > 1) // Only normalize if necessary
{
	direction = direction.normalized;
}