rigidbody2D.velocity.y always returns 0

Questions & Answers
1

Hi, I need some help with my code. I have searched evreywhere but i wasn’t able to find a solution.
The problem is that rigidbody2D.velocity.y and rigidbody2D.velocity.x always returns 0 even if the player is moving!

Maybe the problem could be that I use Vector3.MoveTowards…

Thank you for your help, this is making me crazy.

using UnityEngine;
using System.Collections;

public class playerControllerScript : MonoBehaviour
{

	private float speed = 2.5f;
	private float relSpeed;
	private Vector3 target;
	private float myScale = 1.15f;
	float relativeScale;
	private bool facingRight = true;
	static public Vector3 playerPosition;
	private bool move = true;
	private Animator anim;
	
	public float testSpeed;

	void Start () 
	{
		target = transform.position;
		relSpeed = speed;
		oldPosition = transform.position;
		anim = GetComponent<Animator>();
	}


	
	void Update () 
	{
		if (Input.GetMouseButtonDown(0)) 
		{	
			// This part is for moving only if you click on certain layer
			Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

			RaycastHit2D hit = Physics2D.GetRayIntersection(ray,Mathf.Infinity);
			
			if(hit.collider != null && (hit.transform.gameObject.layer == LayerMask.NameToLayer("Floor")))
			{
				target = Camera.main.ScreenToWorldPoint(Input.mousePosition);				
				target.z = transform.position.z;
			}

			move = true;
		}

		if (move == true)
			transform.position = Vector3.MoveTowards(transform.position, target, relSpeed * Time.deltaTime);

		// This is for changing the size of the player and it's speed (it depends on how much he is far away)
		relativeScale = myScale - transform.position.y / 5;

		if (target.x > transform.position.x && !facingRight)
			facingRight = true;

		else if (target.x < transform.position.x && facingRight)
			facingRight = false;

		if (!facingRight)
			transform.localScale = new Vector3(relativeScale * -1, relativeScale, relativeScale);
		else
			transform.localScale = new Vector3(relativeScale, relativeScale, relativeScale);

		relSpeed = speed - transform.position.y / 5;

		playerPosition = transform.position;
	}

	void FixedUpdate ()
	{
		testSpeed = rigidbody2D.velocity.y;
		
		anim.SetFloat ("vSpeed",rigidbody2D.velocity.y);
	}

}
2

Directly changing the transform will make the velocity useless I’m afraid. Velocity is used by the underlying physics system. unity - How to move rigidbodies - Game Development Stack Exchange

3

It’s actually rigidbody.velocity that affects the position, and not the other way around. Note however that you can easily calculate your own “fake” velocity the other way around:

Vector3 velocity;
Vector3 oneFrameAgo;

void FixedUpdate () {
	velocity = transform.position - oneFrameAgo;
	oneFrameAgo = transform.position;
}

As well, you can apply that to rotation and even scale, if that’s ever useful.